1 Change log file for Exim from version 4.21
2 -------------------------------------------
6 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
7 supports it and a size is available (ie. the sending peer gave us one).
9 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
10 years of being deprecated). The replacements are the ACLs
11 acl_smtp_mime and acl_not_smtp_mime.
16 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
17 and 3.4.4 - once the server is enabled to respond to an OCSP request
18 it does even when not requested, resulting in a stapling non-aware
19 client dropping the TLS connection.
21 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
22 support variable-length bit vectors. No functional change.
24 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
25 The I= interface field on outgoing lines is now after the H= remote
26 host field, same as incoming lines. There is a separate
27 outgoing_interface log selector which allows you to disable the
30 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
31 If not running log_selector +smtp_connection the mainlog would be held
32 open indefinitely after a "too many connections" event, including to a
33 deleted file after a log rotate. Leave the per net connection logging
34 leaving it open for efficiency as that will be quickly detected by the
35 check on the next write.
37 HS/01 Bug 1671: Fix post transport crash.
38 Processing the wait-<transport> messages could crash the delivery
39 process if the message IDs didn't exist for some reason. When
40 using 'split_spool_directory=yes' the construction of the spool
41 file name failed already, exposing the same netto behaviour.
43 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
44 mime_regex ACL conditions.
46 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
47 to DSN fail messages (bounces): remote IP, remote greeting, remote response
48 to HELO, local diagnostic string.
50 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
51 log line to debug. Even when configured with a tls authenticator many
52 client connections are expected to not authenticate in this way, so
53 an authenticate fail is not an error.
55 HS/02 Add the Exim version string to the process info. This way exiwhat
56 gives some more detail about the running daemon.
58 JH/06 Bug 1395: time-limit cacheing of DNS lookups, to the TTL value. This may
59 matter for fast-change records such as DNSBLs.
61 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
62 retry record, even if constant. There may be multiple transports with
63 different interface settings and the retry behaviour needs to be kept
66 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
68 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
70 JH/10 Bug 840: fix log_defer_output option of pipe transport
72 JH/11 Bug 830: use same host for all RCPTS of a message, even under
73 hosts_randomize. This matters a lot when combined with mua_wrapper.
75 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
76 ${quote_pgsql:<string>} operator.
78 JH/13 Bug 1708: avoid misaligned access in cached lookup.
80 JH/14 Change header file name for freeradius-client. Relevant if compiling
81 with Radius support; from the Gentoo tree and checked under Fedora.
83 JH/15 Bug 1712: Introduce $prdr_requested flag variable
85 JH/16 Bug 1714: Permit an empty string as expansion result for transport
86 option transport_filter, meaning no filtering.
88 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
90 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
91 defaults to "*" (all hosts). The variable is now available when not built
92 with TLS, default unset, mainly to enable keeping the testuite sane.
93 If a server certificate is not supplied (via tls_certificate) an error is
94 logged, and clients will find TLS connections fail on startup. Presumably
95 they will retry in-clear.
96 Packagers of Exim are strongly encouraged to create a server certificate
99 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
100 with the $config_file variable.
102 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
103 in transport context, after the attempt, and per-recipient. The latter type
104 is per host attempted. The event data is the error message, and the errno
105 information encodes the lookup type (A vs. MX) used for the (first) host,
106 and the trailing two digits of the smtp 4xx reponse.
108 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
109 to write to mainlog (or rejectlog, paniclog) in the window between file
110 creation and permissions/ownership being changed. Particularly affects
111 installations where exicyclog is run as root, rather than exim user;
112 result is that the running daemon panics and dies.
114 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
116 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
117 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
118 "pri" and "weight". Note that the previous implicit priority given by the
119 list order is no longer honoured.
121 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalisation
124 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
125 by defining SUPPORT_SOCKS.
127 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
128 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
129 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
130 variables are renamed to proxy_{local,external}_{address,port}.
132 JH/27 Move Internationalisation support from Experimental to mainline, enabled
133 for a build by defining SUPPORT_I18N
135 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
136 of the query string, and make ${quote_redis:} do that quoting.
138 JH/29 Move Events support from Experimental to mainline, enabled by default
139 and removable for a build by defining DISABLE_EVENT.
141 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
143 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
144 cached by the daemon.
146 JH/32 Move Redis support from Experimental to mainline, enabled for a build
147 by defining LOOKUP_REDIS. The libhiredis library is required.
149 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
150 keys are given for lookup.
152 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
153 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
154 only supported when built with TLS support. The PolarSSL SHA routines
155 are still used when the TLS library is too old for convenient support.
157 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
158 openssl_options), for security. OpenSSL forces this from version 1.1.0
159 server-side so match that on older versions.
161 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
162 allocation for $value could be released as the expansion processing
163 concluded, but leaving the global pointer active for it.
165 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
166 and to use the domains and local_parts ACL conditions.
168 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
169 incorrectly not doubled on cutthrough transmission, hence seen as a
170 body-termination at the receiving system - resulting in truncated mails.
171 Commonly the sender saw a TCP-level error, and retransmitted the message
172 via the normal store-and-forward channel. This could result in duplicates
173 received - but deduplicating mailstores were liable to retain only the
174 initial truncated version.
176 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
178 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
180 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
181 we're in there, support oversigning also; bug 1309.
183 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
185 HS/04 Add support for keep_environment and add_environment options.
187 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
188 either intentional arithmetic overflow during PRNG, or testing config-
191 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
192 delivery resulted in actual delivery. Cancel cutthrough before DATA
195 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
196 rejects a recipient: pass the reject to the originator.
198 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
199 Many were false-positives and ignorable, but it's worth fixing the
202 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
203 for the new environment-manipulation done at startup. Move the routines
204 from being local to tls.c to being global via the os.c file.
206 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
207 an extract embedded as result-arg for a map, the first arg for extract
208 is unavailable so we cannot tell if this is a numbered or keyed
209 extraction. Accept either.
215 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
218 JH/02 The smtp transport option "multi_domain" is now expanded.
220 JH/03 The smtp transport now requests PRDR by default, if the server offers
223 JH/04 Certificate name checking on server certificates, when exim is a client,
224 is now done by default. The transport option tls_verify_cert_hostnames
225 can be used to disable this per-host. The build option
226 EXPERIMENTAL_CERTNAMES is withdrawn.
228 JH/05 The value of the tls_verify_certificates smtp transport and main options
229 default to the word "system" to access the system default CA bundle.
230 For GnuTLS, only version 3.0.20 or later.
232 JH/06 Verification of the server certificate for a TLS connection is now tried
233 (but not required) by default. The verification status is now logged by
234 default, for both outbound TLS and client-certificate supplying inbound
237 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
240 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
241 Status Notification (bounce) messages are now MIME format per RFC 3464.
242 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
243 under the control of the dsn_advertise_hosts option, and routers may
244 have a dsn_lasthop option.
246 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
247 default, modifiable by a malware= option. The list separator for
248 the options can now be changed in the usual way. Bug 68.
250 JH/10 The smtp_receive_timeout main option is now expanded before use.
252 JH/11 The incoming_interface log option now also enables logging of the
253 local interface on delivery outgoing connections.
255 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
256 if the interface and destination host and port all match.
258 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
261 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
262 Patch from Andrew Lewis.
264 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
265 now supports optional time-restrictions, weighting, and priority
266 modifiers per server. Patch originally by <rommer@active.by>.
268 JH/16 The spamd_address main option now supports a mixed list of local
269 and remote servers. Remote servers can be IPv6 addresses, and
270 specify a port-range.
272 JH/17 Bug 68: The spamd_address main option now supports an optional
273 timeout value per server.
275 JH/18 Bug 1581: Router and transport options headers_add/remove can
276 now have the list separator specified.
278 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
281 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
284 JH/21 Support for the A6 type of dns record is withdrawn.
286 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
287 rather than the verbs used.
289 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
290 from 255 to 1024 chars.
292 JH/24 Verification callouts now attempt to use TLS by default.
294 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
295 are generic router options now. The defaults didn't change.
297 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
298 Original patch from Alexander Shikoff, worked over by JH.
300 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
301 files if ZCAT_COMMAND is not executable.
303 JH/26 Bug 1539: Add timout/retry options on dnsdb lookups.
305 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
307 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
308 Normally benign, it bites when the pair was led to by a CNAME;
309 modern usage is to not canoicalize the domain to a CNAME target
310 (and we were inconsistent anyway for A-only vs AAAA+A).
312 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
314 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
315 when evaluating $sender_host_dnssec.
317 JH/31 Check the HELO verification lookup for DNSSEC, adding new
318 $sender_helo_dnssec variable.
320 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
322 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
324 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
326 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
327 documented as working, but never had. Support all but $spam_report.
329 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
330 added for tls authenticator.
332 HS/03 Add perl_taintmode main config option
337 TL/01 When running the test suite, the README says that variables such as
338 no_msglog_check are global and can be placed anywhere in a specific
339 test's script, however it was observed that placement needed to be near
340 the beginning for it to behave that way. Changed the runtest perl
341 script to read through the entire script once to detect and set these
342 variables, reset to the beginning of the script, and then run through
343 the script parsing/test process like normal.
345 TL/02 The BSD's have an arc4random API. One of the functions to induce
346 adding randomness was arc4random_stir(), but it has been removed in
347 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
348 function when detected.
350 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
351 cause callback expansion.
353 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
354 syntax errors in an expansion can be treated as a string instead of
355 logging or causing an error, due to the internal use of bool_lax
356 instead of bool when processing it.
358 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
359 server certificates when making smtp deliveries.
361 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
363 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
365 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
367 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
368 Merged patch from Sebastian Wiedenroth.
370 JH/05 Fix results-pipe from transport process. Several recipients, combined
371 with certificate use, exposed issues where response data items split
372 over buffer boundaries were not parsed properly. This eventually
373 resulted in duplicates being sent. This issue only became common enough
374 to notice due to the introduction of conection certificate information,
375 the item size being so much larger. Found and fixed by Wolfgang Breyha.
377 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
378 size buffer was used, resulting in syntax errors when an expansion
381 JH/07 Add support for directories of certificates when compiled with a GnuTLS
382 version 3.3.6 or later.
384 JH/08 Rename the TPDA expermimental facility to Event Actions. The #ifdef
385 is EXPERIMENTAL_EVENT, the main-configuration and transport options
386 both become "event_action", the variables become $event_name, $event_data
387 and $event_defer_errno. There is a new variable $verify_mode, usable in
388 routers, transports and related events. The tls:cert event is now also
389 raised for inbound connections, if the main configuration event_action
392 TL/06 In test suite, disable OCSP for old versions of openssl which contained
393 early OCSP support, but no stapling (appears to be less than 1.0.0).
395 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
396 server certificate names available under the smtp transport option
397 "tls_verify_cert_hostname" now do not permit multi-component wildcard
400 JH/10 Time-related extraction expansions from certificates now use the main
401 option "timezone" setting for output formatting, and are consistent
402 between OpenSSL and GnuTLS compilations. Bug 1541.
404 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
405 encoded parameter in the incoming message. Bug 1558.
407 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
408 include certificate info, eximon was claiming there were spoolfile
411 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
413 JH/14 Log delivery-related information more consistently, using the sequence
414 "H=<name> [<ip>]" wherever possible.
416 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
417 are problematic for Debian distribution, omit them from the release
420 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
422 JH/16 Fix string representation of time values on 64bit time_t anchitectures.
425 JH/17 Fix a null-indirection in certextract expansions when a nondefault
426 output list separator was used.
431 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
432 checkers that were complaining about end of non-void function with no
435 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
436 This was a regression intruduced in 4.83 by another bugfix.
438 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
440 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
441 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
447 TF/01 Correctly close the server side of TLS when forking for delivery.
449 When a message was received over SMTP with TLS, Exim failed to clear up
450 the incoming connection properly after forking off the child process to
451 deliver the message. In some situations the subsequent outgoing
452 delivery connection happened to have the same fd number as the incoming
453 connection previously had. Exim would try to use TLS and fail, logging
454 a "Bad file descriptor" error.
456 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
457 utilities have not been installed.
459 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
460 temporary space as the ACL may create new global variables.
462 TL/01 LDAP support uses per connection or global context settings, depending
463 upon the detected version of the libraries at build time.
465 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
466 to extract and use the src ip:port in logging and expansions as if it
467 were a direct connection from the outside internet. PPv2 support was
468 updated based on HAProxy spec change in May 2014.
470 JH/02 Add ${listextract {number}{list}{success}{fail}}.
472 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
473 Properly escape header and check for NULL return.
475 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
478 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
480 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
481 characters in header names, implemented as a verify condition.
482 Contributed by Michael Fischer v. Mollard.
484 TL/05 Rename SPF condition results err_perm and err_temp to standardized
485 results permerror and temperror. Previous values are deprecated but
486 still accepted. In a future release, err_perm and err_temp will be
487 completely removed, which will be a backward incompatibility if the
488 ACL tests for either of these two old results. Patch contributed by
489 user bes-internal on the mailing list.
491 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
493 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
494 selectors, in both main and reject logs.
496 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
499 JH/07 Add malware type "sock" for talking to simple daemon.
501 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
503 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
504 routers/transports under cutthrough routing.
506 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
507 numbers. Touch up "bool" conditional to keep the same definition.
509 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
511 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
513 JH/12 Expand items in router/transport headers_add or headers_remove lists
514 individually rather than the list as a whole. Bug 1452.
516 Required for reasonable handling of multiple headers_ options when
517 they may be empty; requires that headers_remove items with embedded
518 colons must have them doubled (or the list-separator changed).
520 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
521 view the policy declared in the DMARC record. Currently, $dmarc_status
522 is a combined value of both the record presence and the result of the
525 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
527 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
528 dnslookup router and the smtp transport (applying to the forward
531 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
532 of ldap servers used for a specific lookup. Patch provided by Heiko
535 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
536 New variable $lookup_dnssec_authenticated for observability.
538 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
539 Patch submitted by Lars Timman.
541 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
543 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
544 Requires trusted mode and valid format message id, aborts otherwise.
545 Patch contributed by Heiko Schlichting.
547 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
548 certextract with support for various fields. Bug 1358.
550 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
551 is requested by default, modifiable by smtp transport option
554 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
555 operate on certificate variables to give certificate fingerprints
556 Also new ${sha256:cert_variable}.
558 JH/23 The PRDR feature is moved from being Experimental into the mainline.
560 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
561 Christian Aistleitner.
563 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
565 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
566 file. Patch from Wolfgang Breyha.
568 JH/25 Expand the coverage of the delivery $host and $host_address to
569 client authenticators run in verify callout. Bug 1476.
571 JH/26 Port service names are now accepted for tls_on_connect_ports, to
572 align with daemon_smtp_ports. Bug 72.
574 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
575 support and error reporting did not work properly.
577 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
578 and is readable. Patch from Andrew Colin Kissa.
580 TL/14 Enhance documentation of ${run expansion and how it parses the
581 commandline after expansion, particularly in the case when an
582 unquoted variable expansion results in an empty value.
584 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
586 PP/02 Fix internal collision of T_APL on systems which support RFC3123
587 by renaming away from it. Addresses GH issue 15, reported by
590 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
592 TL/15 SECURITY: prevent double expansion in math comparison functions
593 (can expand unsanitized data). Not remotely exploitable.
600 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
602 PP/02 Make -n do something, by making it not do something.
603 When combined with -bP, the name of an option is not output.
605 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
608 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
609 $sender_host_name and config options to manage this, and basic check
612 PP/05 DSCP support for outbound connections and control modifier for inbound.
614 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
615 (Only plugin which currently uses this is kerberos4, which nobody should
616 be using, but we should make it available and other future plugins might
617 conceivably use it, even though it would break NAT; stuff *should* be
618 using channel bindings instead).
620 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
621 name; added for Sendmail compatibility; requires admin caller.
622 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
623 just ignore it); requires trusted caller.
624 Also parse but ignore: -Ac -Am -X<logfile>
627 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
629 TL/02 Add +smtp_confirmation as a default logging option.
631 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
632 Patch by Magnus Holmgren from 2007-02-20.
634 TL/04 Bugzilla 1281 - Spec typo.
635 Bugzilla 1283 - Spec typo.
636 Bugzilla 1290 - Spec grammar fixes.
638 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
640 TL/06 Add Experimental DMARC support using libopendmarc libraries.
642 TL/07 Fix an out of order global option causing a segfault. Reported to dev
643 mailing list by by Dmitry Isaikin.
645 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
647 JH/02 Support "G" suffix to numbers in ${if comparisons.
649 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
651 NM/01 Bugzilla 1197 - Spec typo
652 Bugzilla 1196 - Spec examples corrections
654 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
656 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
657 gnutls_enable_pkcs11, but renamed to more accurately indicate its
660 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
661 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
663 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
664 "acl {{name}{arg}...}", and optional args on acl condition
667 JH/05 Permit multiple router/transport headers_add/remove lines.
669 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
671 JH/07 Avoid using a waiting database for a single-message-only transport.
672 Performance patch from Paul Fisher. Bugzilla 1262.
674 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
677 JH/09 Add $headers_added variable, with content from use of ACL modifier
678 add_header (but not yet added to the message). Bugzilla 199.
680 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
681 Pulled from Bugzilla 817 by Wolfgang Breyha.
683 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
685 (nb: this is the same fix as in Exim 4.80.1)
687 JH/11 Add A= logging on delivery lines, and a client_set_id option on
690 JH/12 Add optional authenticated_sender logging to A= and a log_selector
693 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
695 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
696 advertise SMTP AUTH mechanism to us, instead of a generic
697 protocol violation error. Also, make Exim more robust to bad
698 data from the Dovecot auth socket.
700 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
702 When a queue runner is handling a message, Exim first routes the
703 recipient addresses, during which it prunes them based on the retry
704 hints database. After that it attempts to deliver the message to
705 any remaining recipients. It then updates the hints database using
708 So if a recipient address works intermittently, it can get repeatedly
709 deferred at routing time. The retry hints record remains fresh so the
710 address never reaches the final cutoff time.
712 This is a fairly common occurrence when a user is bumping up against
713 their storage quota. Exim had some logic in its local delivery code
714 to deal with this. However it did not apply to per-recipient defers
715 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
717 This change adds a proper retry rule check during routing so that the
718 final cutoff time is checked against the message's age. We only do
719 this check if there is an address retry record and there is not a
720 domain retry record; this implies that previous attempts to handle
721 the address had the retry_use_local_parts option turned on. We use
722 this as an approximation for the destination being like a local
723 delivery, as in LMTP.
725 I suspect this new check makes the old local delivery cutoff check
726 redundant, but I have not verified this so I left the code in place.
728 TF/02 Correct gecos expansion when From: is a prefix of the username.
730 Test 0254 submits a message to Exim with the header
734 When I ran the test suite under the user fanf2, Exim expanded
735 the header to contain my full name, whereas it should have added
736 a Resent-Sender: header. It erroneously treats any prefix of the
737 username as equal to the username.
739 This change corrects that bug.
741 GF/01 DCC debug and logging tidyup
742 Error conditions log to paniclog rather than rejectlog.
743 Debug lines prefixed by "DCC: " to remove any ambiguity.
745 TF/03 Avoid unnecessary rebuilds of lookup-related code.
747 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
748 Bug spotted by Jeremy Harris; was flawed since initial commit.
749 Would have resulted in OCSP responses post-SNI triggering an Exim
750 NULL dereference and crash.
752 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
754 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
755 Bug detection, analysis and fix by Samuel Thibault.
756 Bugzilla 1331, Debian bug #698092.
758 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
760 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
761 Server implementation by Todd Lyons, client by JH.
762 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
763 config variable "prdr_enable" controls whether the server
764 advertises the facility. If the client requests PRDR a new
765 acl_data_smtp_prdr ACL is called once for each recipient, after
766 the body content is received and before the acl_smtp_data ACL.
767 The client is controlled by bolth of: a hosts_try_prdr option
768 on the smtp transport, and the server advertisement.
769 Default client logging of deliveries and rejections involving
770 PRDR are flagged with the string "PRDR".
772 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
773 fclose(). Diagnosis by Todd Lyons.
775 PP/17 Update configure.default to handle IPv6 localhost better.
776 Patch by Alain Williams (plus minor tweaks).
779 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
780 This is now consistent with GnuTLS, and is now documented: the
781 previous undocumented portable approach to treating the option as
782 unset was to force an expansion failure. That still works, and
783 an empty string is now equivalent.
785 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
786 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
787 not performing validation itself.
789 PP/20 Added force_command boolean option to pipe transport.
790 Patch from Nick Koston, of cPanel Inc.
792 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
795 TF/04 Added udpsend ACL modifer and hexquote expansion operator
797 PP/21 Fix eximon continuous updating with timestamped log-files.
798 Broken in a format-string cleanup in 4.80, missed when I repaired the
799 other false fix of the same issue.
800 Report and fix from Heiko Schlichting.
803 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
804 Report from Prashanth Katuri.
806 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
807 It's SecureTransport, so affects any MacOS clients which use the
808 system-integrated TLS libraries, including email clients.
810 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
811 using a MIME ACL for non-SMTP local injection.
812 Report and assistance in diagnosis by Warren Baker.
814 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
816 JH/16 Fix comparisons for 64b. Bugzilla 1385.
818 TL/09 Add expansion variable $authenticated_fail_id to keep track of
819 last id that failed so it may be referenced in subsequent ACL's.
821 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
824 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
825 ldap library initialization, allowing self-signed CA's to be
826 used. Also properly sets require_cert option later in code by
827 using NULL (global ldap config) instead of ldap handle (per
828 session). Bug diagnosis and testing by alxgomz.
830 TL/12 Enhanced documentation in the ratelimit.pl script provided in
831 the src/util/ subdirectory.
833 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
834 renamed to Transport Post Delivery Action by Jeremy Harris, as
837 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
838 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
839 redis_servers = needs to be configured which will be used by the redis
840 lookup. Patch from Warren Baker, of The Packet Hub.
842 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
844 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
845 hostname or reverse DNS when processing a host list. Used suggestions
846 from multiple comments on this bug.
848 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
850 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
851 Missed a few lines, added it to make the runtest require no keyboard
854 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
855 contains upper case chars. Make router use caseful_local_part.
857 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
858 support when GnuTLS has been built with p11-kit.
864 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
866 This, or similar/improved, will also be change PP/11 of 4.82.
872 PP/01 Handle short writes when writing local log-files.
873 In practice, only affects FreeBSD (8 onwards).
874 Bugzilla 1053, with thanks to Dmitry Isaikin.
876 NM/01 Bugzilla 949 - Documentation tweak
878 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
881 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
883 PP/02 Implemented gsasl authenticator.
885 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
887 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
888 `pkg-config foo` for cflags/libs.
890 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
891 with rest of GSASL and with heimdal_gssapi.
893 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
894 `pkg-config foo` for cflags/libs for the TLS implementation.
896 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
897 properties get this fed in as external SSF. A number of robustness
898 and debugging improvements to the cyrus_sasl authenticator.
900 PP/08 cyrus_sasl server now expands the server_realm option.
902 PP/09 Bugzilla 1214 - Log authentication information in reject log.
903 Patch by Jeremy Harris.
905 PP/10 Added dbmjz lookup type.
907 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
909 PP/12 MAIL args handles TAB as well as SP, for better interop with
910 non-compliant senders.
911 Analysis and variant patch by Todd Lyons.
913 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
914 Bug report from Lars Müller <lars@samba.org> (via SUSE),
915 Patch from Dirk Mueller <dmueller@suse.com>
917 PP/13 tls_peerdn now print-escaped for spool files.
918 Observed some $tls_peerdn in wild which contained \n, which resulted
919 in spool file corruption.
921 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
922 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
923 or write after TLS renegotiation, which otherwise led to messages
926 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
927 as a tracking header (ie: a signed header comes before the signature).
928 Patch from Wolfgang Breyha.
930 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
931 comma-sep list; embedded commas doubled.
933 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
935 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
937 Report and patch from Dmitry Banschikov.
939 PP/16 Removed "dont_insert_empty_fragments" fron "openssl_options".
940 Removed SSL_clear() after SSL_new() which led to protocol negotiation
941 failures. We appear to now support TLS1.1+ with Exim.
943 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
944 lets Exim select keys and certificates based upon TLS SNI from client.
945 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
946 before an outbound SMTP session. New log_selector, +tls_sni.
948 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
949 NULL dereference. Report and patch from Alun Jones.
951 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
952 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
953 Not seeing resolver debug output on NetBSD, but suspect this is a
954 resolver implementation change.
956 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
957 Left warnings. Added "eximon gdb" invocation mode.
959 PP/21 Defaulting "accept_8bitmime" to true, not false.
961 PP/22 Added -bw for inetd wait mode support.
963 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
964 locate the relevant includes and libraries. Made this the default.
966 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
967 Bugzilla 1246, report and most of solution from Tomasz Kusy.
969 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
970 This may cause build issues on older platforms.
972 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
973 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
974 gnutls_require_mac & gnutls_require_protocols (no longer supported).
975 Added SNI support via GnuTLS too.
976 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
978 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
980 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
981 Applied second patch from Janne, implementing suggestion to default
982 multiple-strings-in-record handling to match SPF spec.
984 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
986 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
987 read-only, out of scope).
988 Patch from Wolfgang Breyha, report from Stuart Northfield.
990 PP/29 Fix three issues highlighted by clang analyser static analysis.
991 Only crash-plausible issue would require the Cambridge-specific
992 iplookup router and a misconfiguration.
993 Report from Marcin Mirosław.
995 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
997 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
998 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
999 As part of this, removing so much warning spew let me fix some minor
1000 real issues in debug logging.
1002 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1003 assignment on my part. Fixed.
1005 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1006 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1007 Janne Snabb (who went above and beyond: thank you).
1009 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1010 string otherwise requires a connection and a bunch more work and it's
1011 relatively easy to get wrong. Should also expose TLS library linkage
1014 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1015 64-bit ${eval} (JH/03).
1017 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
1018 GNU libc to support some of the 64-bit stuff, should not lead to
1019 conflicts. Defined before os.h is pulled in, so if a given platform
1020 needs to override this, it can.
1022 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1023 protection layer was required, which is not implemented.
1024 Bugzilla 1254, patch from Wolfgang Breyha.
1026 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1027 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1028 tls_dhparam take prime identifiers. Also unbreak combination of
1029 OpenSSL+DH_params+TLSSNI.
1031 PP/39 Disable SSLv2 by default in OpenSSL support.
1037 PP/01 Solaris build fix for Oracle's LDAP libraries.
1038 Bugzilla 1109, patch from Stephen Usher.
1040 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1042 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1045 TF/02 Fix a couple more cases where we did not log the error message
1046 when unlink() failed. See also change 4.74-TF/03.
1048 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1049 lock up or crash if it happened to be inside a call to libc when it
1050 got a SIGUSR1 from exiwhat.
1052 The SIGUSR1 handler appends the current process status to the process
1053 log which is later printed by exiwhat. It used to use the general
1054 purpose logging code to do this, but several functions it calls are
1055 not safe for signals.
1057 The new output code in the SIGUSR1 handler is specific to the process
1058 log, and simple enough that it's easy to inspect for signal safety.
1059 Removing some special cases also simplifies the general logging code.
1060 Removing the spurious timestamps from the process log simplifies
1063 TF/04 Improved ratelimit ACL condition.
1065 The /noupdate option has been deprecated in favour of /readonly which
1066 has clearer semantics. The /leaky, /strict, and /readonly update modes
1067 are mutually exclusive. The update mode is no longer included in the
1068 database key; it just determines when the database is updated. (This
1069 means that when you upgrde Exim will forget old rate measurements.)
1071 Exim now checks that the per_* options are used with an update mode that
1072 makes sense for the current ACL. For example, when Exim is processing a
1073 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1074 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1075 must specify per_mail/readonly. If you omit the update mode it defaults to
1076 /leaky where that makes sense (as before) or /readonly where required.
1078 The /noupdate option is now undocumented but still supported for
1079 backwards compatibility. It is equivalent to /readonly except that in
1080 ACLs where /readonly is required you may specify /leaky/noupdate or
1081 /strict/noupdate which are treated the same as /readonly.
1083 A useful new feature is the /count= option. This is a generalization
1084 of the per_byte option, so that you can measure the throughput of other
1085 aggregate values. For example, the per_byte option is now equivalent
1086 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1088 The per_rcpt option has been generalized using the /count= mechanism
1089 (though it's more complicated than the per_byte equivalence). When it is
1090 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1091 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1092 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1093 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1094 Note that using per_rcpt with a non-readonly update mode in more than
1095 one ACL will cause the recipients to be double-counted. (The per_mail
1096 and per_byte options don't have this problem.)
1098 The handling of very low rates has changed slightly. If the computed rate
1099 is less than the event's count (usually one) then this event is the first
1100 after a long gap. In this case the rate is set to the same as this event's
1101 count, so that the first message of a spam run is counted properly.
1103 The major new feature is a mechanism for counting the rate of unique
1104 events. The new per_addr option counts the number of different
1105 recipients that someone has sent messages to in the last time period. It
1106 behaves like per_rcpt if all the recipient addresses are different, but
1107 duplicate recipient addresses do not increase the measured rate. Like
1108 the /count= option this is a general mechanism, so the per_addr option
1109 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1110 example, measure the rate that a client uses different sender addresses
1111 with the options per_mail/unique=$sender_address. There are further
1112 details in the main documentation.
1114 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1116 TF/06 Removed a few PCRE remnants.
1118 TF/07 Automatically extract Exim's version number from tags in the git
1119 repository when doing development or release builds.
1121 PP/02 Raise smtp_cmd_buffer_size to 16kB.
1122 Bugzilla 879. Patch from Paul Fisher.
1124 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1125 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1128 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
1130 PP/05 Variable $av_failed, true if the AV scanner deferred.
1131 Bugzilla 1078. Patch from John Horne.
1133 PP/06 Stop make process more reliably on build failure.
1134 Bugzilla 1087. Patch from Heiko Schlittermann.
1136 PP/07 Make maildir_use_size_file an _expandable_ boolean.
1137 Bugzilla 1089. Patch from Heiko Schlittermann.
1139 PP/08 Handle ${run} returning more data than OS pipe buffer size.
1140 Bugzilla 1131. Patch from Holger Weiß.
1142 PP/09 Handle IPv6 addresses with SPF.
1143 Bugzilla 860. Patch from Wolfgang Breyha.
1145 PP/10 GnuTLS: support TLS 1.2 & 1.1.
1147 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1150 PP/11 match_* no longer expand right-hand-side by default.
1151 New compile-time build option, EXPAND_LISTMATCH_RHS.
1152 New expansion conditions, "inlist", "inlisti".
1154 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
1156 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
1158 PP/14 fix log_write() format string regression from TF/03.
1159 Bugzilla 1152. Patch from Dmitry Isaikin.
1165 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
1167 PP/02 Harmonised TLS library version reporting; only show if debugging.
1168 Layout now matches that introduced for other libraries in 4.74 PP/03.
1170 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
1172 PP/04 New "dns_use_edns0" global option.
1174 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
1177 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
1178 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
1180 TK/01 Updated PolarSSL code to 0.14.2.
1181 Bugzilla 1097. Patch from Andreas Metzler.
1183 PP/07 Catch divide-by-zero in ${eval:...}.
1184 Fixes bugzilla 1102.
1186 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
1189 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
1190 format-string attack -- SECURITY: remote arbitrary code execution.
1192 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
1193 time unintentionally subject to list matching rules, letting the header
1194 cause arbitrary Exim lookups (of items which can occur in lists, *not*
1195 arbitrary string expansion). This allowed for information disclosure.
1197 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
1198 INT_MIN/-1 -- value coerced to INT_MAX.
1204 NM/01 Workround for PCRE version dependency in version reporting
1207 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
1208 This fixes portability to compilers other than gcc, notably
1209 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
1211 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
1212 makefiles for portability to HP-UX and POSIX correctness.
1214 PP/01 Permit LOOKUP_foo enabling on the make command-line.
1215 Also via indented variable definition in the Makefile.
1216 (Debugging by Oliver Heesakkers).
1218 PP/02 Restore caching of spamd results with expanded spamd_address.
1219 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
1221 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
1222 Improves build reliability. Fix from: Frank Elsner
1224 NM/02 Fix wide character breakage in the rfc2047 coding
1225 Fixes bug 1064. Patch from Andrey N. Oktyabrski
1227 NM/03 Allow underscore in dnslist lookups
1228 Fixes bug 1026. Patch from Graeme Fowler
1230 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
1231 Code patches from Adam Ciarcinski of NetBSD.
1233 NM/04 Fixed exiqgrep to cope with mailq missing size issue
1236 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
1237 is logged, to avoid truncation. Patch from John Horne.
1239 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
1240 Patch from Jakob Hirsch.
1242 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
1243 SQL string expansion failure details.
1244 Patch from Andrey Oktyabrski.
1246 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
1247 Patch from Simon Arlott.
1249 PP/09 New lookups functionality failed to compile on old gcc which rejects
1250 extern declarations in function scope.
1251 Patch from Oliver Fleischmann
1253 PP/10 Use sig_atomic_t for flags set from signal handlers.
1254 Check getgroups() return and improve debugging.
1255 Fixed developed for diagnosis in bug 927 (which turned out to be
1258 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
1259 Patch from Mark Zealey.
1261 PP/12 Bugzilla 1056: Improved spamd server selection.
1262 Patch from Mark Zealey.
1264 PP/13 Bugzilla 1086: Deal with maildir quota file races.
1265 Based on patch from Heiko Schlittermann.
1267 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
1268 Patch from Uwe Doering, sign-off by Michael Haardt.
1270 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
1271 variable declaration deep within a block. Bug and patch from
1274 PP/15 lookups-Makefile IRIX compatibilty coercion.
1276 PP/16 Make DISABLE_DKIM build knob functional.
1278 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
1279 Patch by Simon Arlott
1281 TF/03 Fix valgrind.h portability to C89 compilers that do not support
1282 variable argument macros. Our copy now differs from upstream.
1288 TF/01 Failure to get a lock on a hints database can have serious
1289 consequences so log it to the panic log.
1291 TF/02 Log LMTP confirmation messages in the same way as SMTP,
1292 controlled using the smtp_confirmation log selector.
1294 TF/03 Include the error message when we fail to unlink a spool file.
1296 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
1297 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
1298 for maintaining out-of-tree patches for some time.
1300 PP/01 Bugzilla 139: Documentation and portability issues.
1301 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
1302 Handle per-OS dynamic-module compilation flags.
1304 PP/02 Let /dev/null have normal permissions.
1305 The 4.73 fixes were a little too stringent and complained about the
1306 permissions on /dev/null. Exempt it from some checks.
1307 Reported by Andreas M. Kirchwitz.
1309 PP/03 Report version information for many libraries, including
1310 Exim version information for dynamically loaded libraries. Created
1311 version.h, now support a version extension string for distributors
1312 who patch heavily. Dynamic module ABI change.
1314 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
1315 privilege escalation vulnerability whereby the Exim run-time user
1316 can cause root to append content of the attacker's choosing to
1319 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
1322 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
1323 If dropping privileges for untrusted macros, we disabled normal logging
1324 on the basis that it would fail; for the Exim run-time user, this is not
1325 the case, and it resulted in successful deliveries going unlogged.
1326 Fixed. Reported by Andreas Metzler.
1332 PP/01 Date: & Message-Id: revert to normally being appended to a message,
1333 only prepend for the Resent-* case. Fixes regression introduced in
1334 Exim 4.70 by NM/22 for Bugzilla 607.
1336 PP/02 Include check_rfc2047_length in configure.default because we're seeing
1337 increasing numbers of administrators be bitten by this.
1339 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
1341 PP/03 Bugzilla 994: added openssl_options main configuration option.
1343 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
1345 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
1347 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
1349 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
1350 without a peer certificate, leading to a segfault because of an
1351 assumption that peers always have certificates. Be a little more
1352 paranoid. Problem reported by Martin Tscholak.
1354 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
1355 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
1356 NB: ClamAV planning to remove STREAM in "middle of 2010".
1357 CL also introduces -bmalware, various -d+acl logging additions and
1358 more caution in buffer sizes.
1360 PP/09 Implemented reverse_ip expansion operator.
1362 PP/10 Bugzilla 937: provide a "debug" ACL control.
1364 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
1366 PP/12 Bugzilla 973: Implement --version.
1368 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
1370 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
1372 PP/15 Bugzilla 816: support multiple condition rules on Routers.
1374 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
1375 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
1376 ignore trailing whitespace.
1378 JJ/02 prevent non-panic DKIM error from being sent to paniclog
1380 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
1383 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
1384 Notification from Dr Andrew Aitchison.
1386 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
1387 ExtendedDetectionInfo response format.
1388 Notification from John Horne.
1390 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
1393 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
1394 XSL and documented dependency on system catalogs, with examples of how
1397 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
1400 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
1401 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
1402 configuration file which is writeable by the Exim user or group.
1404 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
1405 of configuration files to cover files specified with the -C option if
1406 they are going to be used with root privileges, not just the default
1409 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
1410 option (effectively making it always true).
1412 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
1413 files to be used while preserving root privileges.
1415 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
1416 that rogue child processes cannot use them.
1418 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
1419 run-time user, instead of root.
1421 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
1422 Exim run-time user without dropping privileges.
1424 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
1425 result string, instead of calling string_vformat() twice with the same
1428 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
1429 for other users. Others should always drop root privileges if they use
1430 -C on the command line, even for a whitelisted configure file.
1432 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
1434 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
1440 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
1441 $data_path, and $header_path variables; fixed documentation bugs and
1444 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
1445 exipick to access non-standard spools, including the "frozen" queue
1448 NM/01 Bugzilla 965: Support mysql stored procedures.
1449 Patch from Alain Williams
1451 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
1453 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
1454 Patch from Andreas Metzler
1456 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
1457 Patch from Kirill Miazine
1459 NM/05 Bugzilla 671: Added umask to procmail example.
1461 JJ/03 installed exipick 20100323.0, fixing doc bug
1463 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
1464 directory. Notification and patch from Dan Rosenberg.
1466 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
1468 TK/02 Improve log output when DKIM signing operation fails.
1470 MH/01 Treat the transport option dkim_domain as a colon separated
1471 list, not as a single string, and sign the message with each element,
1472 omitting multiple occurences of the same signer.
1474 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
1475 Bugzilla 985, 986. Patch by Simon Arlott
1477 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
1478 Patch by Simon Arlott
1480 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
1481 MBX locking. Notification from Dan Rosenberg.
1487 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
1489 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
1491 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
1493 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
1495 NM/04 Bugzilla 915: Flag broken perl installation during build.
1501 TK/01 Added patch by Johannes Berg that expands the main option
1502 "spamd_address" if it starts with a dollar sign.
1504 TK/02 Write list of recipients to X-Envelope-Sender header when building
1505 the mbox-format spool file for content scanning (suggested by Jakob
1508 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
1509 (http://www.dcc-servers.net/) support via dccifd. Activated by
1510 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
1512 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
1513 by Mark Daniel Reidel <mr@df.eu>.
1515 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
1516 When building exim an external PCRE library is now needed -
1517 PCRE is a system library on the majority of modern systems.
1518 See entry on PCRE_LIBS in EDITME file.
1520 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
1521 conversation. Added nologin parameter to request.
1522 Patch contributed by Kirill Miazine.
1524 TF/01 Do not log submission mode rewrites if they do not change the address.
1526 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
1528 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
1529 log files in place. Contributed by Roberto Lima.
1531 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
1533 TF/03 Bugzilla 615: When checking the local_parts router precondition
1534 after a local_part_suffix or local_part_prefix option, Exim now
1535 does not use the address's named list lookup cache, since this
1536 contains cached lookups for the whole local part.
1538 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
1539 Robert Millan. Documentation is in experimental-spec.txt.
1541 TF/04 Bugzilla 668: Fix parallel build (make -j).
1543 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
1545 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
1546 Patch provided by Jan Srzednicki.
1548 TF/05 Leading white space used to be stripped from $spam_report which
1549 wrecked the formatting. Now it is preserved.
1551 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
1552 that they are available at delivery time.
1554 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
1556 TF/08 TLS error reporting now respects the incoming_interface and
1557 incoming_port log selectors.
1559 TF/09 Produce a more useful error message if an SMTP transport's hosts
1560 setting expands to an empty string.
1562 NM/06 Bugzilla 744: EXPN did not work under TLS.
1563 Patch provided by Phil Pennock.
1565 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
1566 Patch provided by Richard Godbee.
1568 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
1569 acl_smtp_notquit, added index entry.
1571 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
1572 Patch provided by Eugene Bujak.
1574 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
1575 accept(). Patch provided by Maxim Dounin.
1577 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
1578 Patch provided by Phil Pennock.
1580 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
1582 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
1583 Patch provided by Brad "anomie" Jorsch.
1585 NM/14 Bugzilla 622: Added timeout setting to transport filter.
1586 Patch provided by Dean Brooks.
1588 TK/05 Add native DKIM support (does not depend on external libraries).
1590 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
1591 Patch provided by Graeme Fowler.
1593 NM/16 Bugzilla 851: Documentation example syntax fix.
1595 NM/17 Changed NOTICE file to remove references to embedded PCRE.
1597 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
1600 NM/19 Bugzilla 745: TLS version reporting.
1601 Patch provided by Phil Pennock.
1603 NM/20 Bugzilla 167: bool: condition support.
1604 Patch provided by Phil Pennock.
1606 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
1607 clients. Patch provided by Phil Pennock.
1609 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
1610 Patch provided by Brad "anomie" Jorsch.
1612 NM/23 Bugzilla 687: Fix misparses in eximstats.
1613 Patch provided by Heiko Schlittermann.
1615 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
1616 Patch provided by Heiko Schlittermann.
1618 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1619 plus update to original patch.
1621 NM/26 Bugzilla 799: Documentation correction for ratelimit.
1623 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
1624 Patch provided by David Brownlee.
1626 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
1628 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
1630 NM/30 Bugzilla 888: TLS documentation bugfixes.
1632 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
1634 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
1635 Unlike the original bugzilla I have changed all shell scripts in src tree.
1637 NM/33 Bugzilla 898: Transport filter timeout fix.
1638 Patch by Todd Rinaldo.
1640 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
1641 Patch by Serge Demonchaux.
1643 NM/35 Bugzilla 39: Base64 decode bug fixes.
1644 Patch by Jakob Hirsch.
1646 NM/36 Bugzilla 909: Correct connect() call in dcc code.
1648 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
1650 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
1652 NM/39 Bugzilla 911: Fixed MakeLinks build script.
1658 TK/01 Add preliminary DKIM support. Currently requires a forked version of
1659 ALT-N's libdkim that I have put here:
1660 http://duncanthrax.net/exim-experimental/
1662 Note to Michael Haardt: I had to rename some vars in sieve.c. They
1663 were called 'true' and it seems that C99 defines that as a reserved
1664 keyword to be used with 'bool' variable types. That means you could
1665 not include C99-style headers which use bools without triggering
1666 build errors in sieve.c.
1668 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
1669 as mailq or other aliases. Changed the --help handling significantly
1670 to do whats expected. exim_usage() emits usage/help information.
1672 SC/01 Added the -bylocaldomain option to eximstats.
1674 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
1676 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
1678 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
1684 PH/01 Another patch from the Sieve maintainer.
1686 PH/02 When an IPv6 address is converted to a string for single-key lookup
1687 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
1688 dots are used instead of colons so that keys in lsearch files need not
1689 contain colons. This was done some time before quoting was made available
1690 in lsearch files. However, iplsearch files do require colons in IPv6 keys
1691 (notated using the quote facility) so as to distinguish them from IPv4
1692 keys. This meant that lookups for IP addresses in host lists did not work
1693 for iplsearch lookups.
1695 This has been fixed by arranging for IPv6 addresses to be expressed with
1696 colons if the lookup type is iplsearch. This is not incompatible, because
1697 previously such lookups could never work.
1699 The situation is now rather anomolous, since one *can* have colons in
1700 ordinary lsearch keys. However, making the change in all cases is
1701 incompatible and would probably break a number of configurations.
1703 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
1706 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
1707 conversion specification without a maximum field width, thereby enabling
1708 a rogue spamd server to cause a buffer overflow. While nobody in their
1709 right mind would setup Exim to query an untrusted spamd server, an
1710 attacker that gains access to a server running spamd could potentially
1711 exploit this vulnerability to run arbitrary code as the Exim user.
1713 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
1714 $primary_hostname instead of what libspf2 thinks the hosts name is.
1716 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
1717 a directory entry by the name of the lookup key. Previously, if a
1718 symlink pointed to a non-existing file or a file in a directory that
1719 Exim lacked permissions to read, a lookup for a key matching that
1720 symlink would fail. Now it is enough that a matching directory entry
1721 exists, symlink or not. (Bugzilla 503.)
1723 PH/03 The body_linecount and body_zerocount variables are now exported in the
1726 PH/04 Added the $dnslist_matched variable.
1728 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
1729 This means they are set thereafter only if the connection becomes
1732 PH/06 Added the client_condition to authenticators so that some can be skipped
1733 by clients under certain conditions.
1735 PH/07 The error message for a badly-placed control=no_multiline_responses left
1736 "_responses" off the end of the name.
1738 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
1740 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
1741 (without spaces) instead of just copying the configuration text.
1743 PH/10 Added the /noupdate option to the ratelimit ACL condition.
1745 PH/11 Added $max_received_linelength.
1747 PH/12 Added +ignore_defer and +include_defer to host lists.
1749 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
1750 way in which PCRE > 7.0 is built.
1752 PH/14 Implemented queue_only_load_latch.
1754 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
1755 MAIL command. The effect was to mangle the value on 64-bit systems.
1757 PH/16 Another patch from the Sieve maintainer.
1759 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
1761 PH/18 If a system quota error occurred while trying to create the file for
1762 a maildir delivery, the message "Mailbox is full" was not appended to the
1763 bounce if the delivery eventually timed out. Change 4.67/27 below applied
1764 only to a quota excession during the actual writing of the file.
1766 PH/19 It seems that peer DN values may contain newlines (and other non-printing
1767 characters?) which causes problems in log lines. The DN values are now
1768 passed through string_printing() before being added to log lines.
1770 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
1771 and InterBase are left for another time.)
1773 PH/21 Added message_body_newlines option.
1775 PH/22 Guard against possible overflow in moan_check_errorcopy().
1777 PH/23 POSIX allows open() to be a macro; guard against that.
1779 PH/24 If the recipient of an error message contained an @ in the local part
1780 (suitably quoted, of course), incorrect values were put in $domain and
1781 $local_part during the evaluation of errors_copy.
1787 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
1788 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
1791 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
1792 issue a MAIL command.
1794 PH/02 In an ACL statement such as
1796 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
1798 if a client was not listed at all, or was listed with a value other than
1799 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
1800 the condition was not true (as it should be), so access was not denied.
1801 The bug was that the ! inversion was incorrectly passed on to the second
1802 item. This has been fixed.
1804 PH/03 Added additional dnslists conditions == and =& which are different from
1805 = and & when the dns lookup returns more than one IP address.
1807 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
1808 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
1810 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
1811 FSYNC, which compiles an option called disable_fsync that allows for
1812 bypassing fsync(). The documentation is heavily laced with warnings.
1814 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
1816 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
1817 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
1818 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
1819 including adding "make clean"; (3) Added -fPIC when compiling the test
1820 dynamically loaded module, to get rid of a warning.
1822 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
1823 message fails, move_frozen_messages = true and ignore_bounce_errors_after
1824 = 0s. The bug is otherwise harmless.
1826 PH/07 There was a bug in the dovecot authenticator such that the value of
1827 $auth1 could be overwritten, and so not correctly preserved, after a
1828 successful authentication. This usually meant that the value preserved by
1829 the server_setid option was incorrect.
1831 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
1833 PH/09 Installed PCRE release 7.0.
1835 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
1836 run for batched SMTP input. It is now run at the start of every message
1837 in the batch. While fixing this I discovered that the process information
1838 (output by running exiwhat) was not always getting set for -bs and -bS
1839 input. This is fixed, and it now also says "batched" for BSMTP.
1841 PH/11 Added control=no_pipelining.
1843 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
1844 patch, slightly modified), and move the expansion of helo_data till after
1845 the connection is made in the smtp transport (so it can use these
1848 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
1850 PH/14 Added log_selector = +pid.
1852 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
1854 PH/16 Add ${if forany and ${if forall.
1856 PH/17 Added dsn_from option to vary the From: line in DSNs.
1858 PH/18 Flush SMTP output before performing a callout, unless control =
1859 no_callout_flush is set.
1861 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
1862 was true (the default) a successful delivery failed to delete the retry
1863 item, thus causing premature timeout of the address. The bug is now
1866 PH/20 Added hosts_avoid_pipelining to the smtp transport.
1868 PH/21 Long custom messages for fakedefer and fakereject are now split up
1869 into multiline reponses in the same way that messages for "deny" and
1870 other ACL rejections are.
1872 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
1873 with slight modification.
1875 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
1876 draft, changing the syntax and factoring some duplicate code".
1878 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
1879 for deliveries of the second and subsequent messages over the same SMTP
1882 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
1883 ${reduce, with only minor "tidies".
1885 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
1887 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
1888 expansion side effects.
1890 PH/27 When a message times out after an over-quota error from an Exim-imposed
1891 quota, the bounce message says "mailbox is full". This message was not
1892 being given when it was a system quota that was exceeded. It now should
1895 MH/03 Made $recipients available in local_scan(). local_scan() already has
1896 better access to the recipient list through recipients_list[], but
1897 $recipients can be useful in postmaster-provided expansion strings.
1899 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
1900 in the case of a MAIL command with additional options following the
1901 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
1902 were accidentally chopped off.
1904 PH/29 SMTP synchronization checks are implemented when a command is read -
1905 there is a check that no more input is waiting when there shouldn't be
1906 any. However, for some commands, a delay in an ACL can mean that it is
1907 some time before the response is written. In this time, more input might
1908 arrive, invalidly. So now there are extra checks after an ACL has run for
1909 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
1910 pipelining has not been advertised.
1912 PH/30 MH's patch to allow iscntrl() characters to be list separators.
1914 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
1915 returned in the SMTP response when smtp_return_error_details was false.
1916 This has been fixed.
1918 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
1919 instead of the C I/O that was originally supplied, because problems were
1920 reported on Solaris.
1922 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
1923 Exim which did not show up earlier: it was assuming that a call to
1924 SSL_CTX_set_info_callback() might give an error value. In fact, there is
1925 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
1926 was a macro that became an assignment, so it seemed to work. This has
1927 changed to a proper function call with a void return, hence the compile
1928 error. Exim's code has been fixed.
1930 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
1933 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
1935 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
1937 PH/37 If a message is not accepted after it has had an id assigned (e.g.
1938 because it turns out to be too big or there is a timeout) there is no
1939 "Completed" line in the log. When some messages of this type were
1940 selected by exigrep, they were listed as "not completed". Others were
1941 picked up by some special patterns. I have improved the selection
1942 criteria to be more general.
1944 PH/38 The host_find_failed option in the manualroute router can now be set
1945 to "ignore", to completely ignore a host whose IP address cannot be
1946 found. If all hosts are ignored, the behaviour is controlled by the new
1947 host_all_ignored option.
1949 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
1950 homing or because of multiple MX records with /mx) generated more than
1951 one IP address, and the following item turned out to be the local host,
1952 all the secondary addresses of the first item were incorrectly removed
1953 from the list, along with the local host and any following hosts (which
1954 is what is supposed to happen).
1956 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
1957 whoever called Exim into the -H file. In the case of the daemon it was
1958 behaving confusingly. When first started, it used values for whoever
1959 started the daemon, but after a SIGHUP it used the Exim user (because it
1960 calls itself on a restart). I have changed the code so that it now always
1963 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
1964 message are rejected with the same error (e.g. no authentication or bad
1965 sender address), and a DATA command is nevertheless sent (as can happen
1966 with PIPELINING or a stupid MUA), the error message that was given to the
1967 RCPT commands is included in the rejection of the DATA command. This is
1968 intended to be helpful for MUAs that show only the final error to their
1971 PH/42 Another patch from the Sieve maintainer.
1973 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
1974 Eximstats - Fixed some broken HTML links and added missing column headers
1976 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
1977 columns for Rejects, Temp Rejects, Ham, and Spam rows.
1979 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
1981 PH/43 Yet another patch from the Sieve maintainer.
1983 PH/44 I found a way to check for a TCP/IP connection going away before sending
1984 the response to the final '.' that terminates a message, but only in the
1985 case where the client has not sent further data following the '.'
1986 (unfortunately, this is allowed). However, in many cases there won't be
1987 any further data because there won't be any more messages to send. A call
1988 to select() can be used: if it shows that the input is "ready", there is
1989 either input waiting, or the socket has been closed. An attempt to read
1990 the next input character can distinguish the two cases. Previously, Exim
1991 would have sent an OK response which the client would never have see.
1992 This could lead to message repetition. This fix should cure that, at
1993 least in a lot of common cases.
1995 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
1996 advertised in response to EHLO.
2002 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2003 fixed by 4.65/MH/01 (is this a record?) are fixed:
2005 (i) An empty string was always treated as zero by the numeric comparison
2006 operators. This behaviour has been restored.
2008 (ii) It is documented that the numeric comparison operators always treat
2009 their arguments as decimal numbers. This was broken in that numbers
2010 starting with 0 were being interpreted as octal.
2012 While fixing these problems I realized that there was another issue that
2013 hadn't been noticed. Values of message_size_limit (both the global option
2014 and the transport option) were treated as octal if they started with 0.
2015 The documentation was vague. These values are now always treated as
2016 decimal, and I will make that clear in the documentation.
2022 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2023 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2026 MH/01 Don't check that the operands of numeric comparison operators are
2027 integers when their expansion is in "skipping" mode (fixes bug
2028 introduced by 4.64-PH/07).
2030 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2031 child addresses, Exim now panics and dies. Previously, because the count
2032 is held in a short int, deliveries were likely to be lost. As such a
2033 large number of recipients for a single message is ridiculous
2034 (performance will be very, very poor), I have chosen to impose a limit
2035 rather than extend the field.
2041 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2042 leftover -K file (the existence of which was triggered by #402).
2043 While we were at it, introduced process PID as part of the -K
2044 filename. This should rule out race conditions when creating
2047 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2048 processing considerably. Previous code took too long for large mails,
2049 triggering a timeout which in turn triggers #401.
2051 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2052 in the DK code in transports.c. sendfile() is not really portable,
2053 hence the _LINUX specificness.
2055 TF/01 In the add_headers option to the mail command in an Exim filter,
2056 there was a bug that Exim would claim a syntax error in any
2057 header after the first one which had an odd number of characters
2060 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2061 callout verification, Exim cached a "reject" for the entire domain. This
2062 is correct for most verifications, but it is not correct for a recipient
2063 verification with use_sender or use_postmaster set, because in that case
2064 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2065 case of MAIL FROM:<> rejection from other early rejections (e.g.
2066 rejection of HELO). When verifying a recipient using a non-null MAIL
2067 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2068 Whatever the result of the callout, the value of the domain cache is
2069 left unchanged (for any other kind of callout, getting as far as trying
2070 RCPT means that the domain itself is ok).
2072 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2075 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2076 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2077 session, the daemon ignores ECONNECT errors and logs others; it now
2078 ignores EPIPE as well.
2080 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2081 (quoted-printable decoding).
2083 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
2084 later the small subsequent patch to fix an introduced bug.
2086 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2088 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2090 PH/08 An error is now given if message_size_limit is specified negative.
2092 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
2093 to be given (somewhat) arbitrary names.
2095 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2098 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2099 miscellaneous code fixes
2101 PH/10 Added the log_reject_target ACL modifier to specify where to log
2104 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2105 hostname. This is wrong, because it relates to the incoming message (and
2106 probably the interface on which it is arriving) and not to the outgoing
2107 callout (which could be using a different interface). This has been
2108 changed to use the value of the helo_data option from the smtp transport
2109 instead - this is what is used when a message is actually being sent. If
2110 there is no remote transport (possible with a router that sets up host
2111 addresses), $smtp_active_hostname is used.
2113 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
2114 tweaks were necessary in order to get it to work (see also 21 below):
2115 (a) The code assumed that strncpy() returns a negative number on buffer
2116 overflow, which isn't the case. Replaced with Exim's string_format()
2118 (b) There were several signed/unsigned issues. I just did the minimum
2119 hacking in of casts. There is scope for a larger refactoring.
2120 (c) The code used strcasecmp() which is not a standard C function.
2121 Replaced with Exim's strcmpic() function.
2122 (d) The code set only $1; it now sets $auth1 as well.
2123 (e) A simple test gave the error "authentication client didn't specify
2124 service in request". It would seem that Dovecot has changed its
2125 interface. Fortunately there's a specification; I followed it and
2126 changed what the client sends and it appears to be working now.
2128 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
2131 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
2132 address A is aliased to B and C, where B exists and C does not. Without
2133 -v the output is "A verified" because verification stops after a
2134 successful redirection if more than one address is generated. However,
2135 with -v the child addresses are also verified. Exim was outputting "A
2136 failed to verify" and then showing the successful verification for C,
2137 with its parentage. It now outputs "B failed to verify", showing B's
2138 parentage before showing the successful verification of C.
2140 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
2141 look up a TXT record in a specific list after matching in a combined
2144 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2145 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2146 they consult the DNS. I had assumed they would set it the way they
2147 wanted; and indeed my experiments on Linux seem to show that in some
2148 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2149 To be on the safe side, however, I have now made the interface to
2150 host_find_byname() similar to host_find_bydns(), with an argument
2151 containing the DNS resolver options. The host_find_byname() function now
2152 sets these options at its start, just as host_find_bydns() does. The smtp
2153 transport options dns_qualify_single and dns_search_parents are passed to
2154 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
2155 of host_find_byname() use the default settings of RES_DEFNAMES
2156 (qualify_single) but not RES_DNSRCH (search_parents).
2158 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
2159 spool_read_header() do less string testing, by means of a preliminary
2160 switch on the second character of optional "-foo" lines. (This is
2161 overdue, caused by the large number of possibilities that now exist.
2162 Originally there were few.) While I was there, I also converted the
2163 str(n)cmp tests so they don't re-test the leading "-" and the first
2164 character, in the hope this might squeeze out yet more improvement.
2166 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
2167 flag allowing group syntax was set by the header_syntax check but not
2168 turned off, possible causing trouble later; (2) The flag was not being
2169 set at all for the header_verify test, causing "group"-style headers to
2170 be rejected. I have now set it in this case, and also caused header_
2171 verify to ignore an empty address taken from a group. While doing this, I
2172 came across some other cases where the code for allowing group syntax
2173 while scanning a header line wasn't quite right (mostly, not resetting
2174 the flag correctly in the right place). These bugs could have caused
2175 trouble for malformed header lines. I hope it is now all correct.
2177 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
2178 with the "reply" argument non-NULL. The code, however (which originally
2179 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
2180 but it didn't always do it. This confused somebody who was copying the
2181 code for some other use. I have removed all the tests.
2183 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
2184 feature that was used to support insecure browsers during the U.S. crypto
2185 embargo. It requires special client support, and Exim is probably the
2186 only MTA that supported it -- and would never use it because real RSA is
2187 always available. This code has been removed, because it had the bad
2188 effect of slowing Exim down by computing (never used) parameters for the
2189 RSA_EXPORT functionality.
2191 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
2192 authenticator to fail if there's a tab character in the incoming data
2193 (there should never be unless someone is messing about, as it's supposed
2194 to be base64-encoded). Also added, on Timo's advice, the "secured" option
2195 if the connection is using TLS or if the remote IP is the same as the
2196 local IP, and the "valid-client-cert option" if a client certificate has
2199 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
2200 authenticators. This can be used for authorization after authentication
2201 succeeds. (In the case of plaintext, it servers for both authentication
2204 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
2205 if any retry times were supplied.
2207 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
2208 connection, where there is no client IP address to check. In this
2209 situation, the verify now always succeeds.
2211 PH/25 Applied John Jetmore's -Mset patch.
2213 PH/26 Added -bem to be like -Mset, but loading a message from a file.
2215 PH/27 In a string expansion for a processed (not raw) header when multiple
2216 headers of the same name were present, leading whitespace was being
2217 removed from all of them, but trailing whitespace was being removed only
2218 from the last one. Now trailing whitespace is removed from each header
2219 before concatenation. Completely empty headers in a concatenation (as
2220 before) are ignored.
2222 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
2223 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
2225 PH/29 [Removed. This was a change that I later backed out, and forgot to
2226 correct the ChangeLog entry (that I had efficiently created) before
2227 committing the later change.]
2229 PH/30 Exim was sometimes attempting to deliver messages that had suffered
2230 address errors (4xx response to RCPT) over the same connection as other
2231 messages routed to the same hosts. Such deliveries are always "forced",
2232 so retry times are not inspected. This resulted in far too many retries
2233 for the affected addresses. The effect occurred only when there were more
2234 hosts than the hosts_max_try setting in the smtp transport when it had
2235 the 4xx errors. Those hosts that it had tried were not added to the list
2236 of hosts for which the message was waiting, so if all were tried, there
2237 was no problem. Two fixes have been applied:
2239 (i) If there are any address or message errors in an SMTP delivery, none
2240 of the hosts (tried or untried) are now added to the list of hosts
2241 for which the message is waiting, so the message should not be a
2242 candidate for sending over the same connection that was used for a
2243 successful delivery of some other message. This seems entirely
2244 reasonable: after all the message is NOT "waiting for some host".
2245 This is so "obvious" that I'm not sure why it wasn't done
2246 previously. Hope I haven't missed anything, but it can't do any
2247 harm, as the worst effect is to miss an optimization.
2249 (ii) If, despite (i), such a delivery is accidentally attempted, the
2250 routing retry time is respected, so at least it doesn't keep
2251 hammering the server.
2253 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
2254 in ${readsocket because some servers need this prod.
2256 PH/32 Added some extra debug output when updating a wait-xxx database.
2258 PH/33 The hint "could be header name not terminated by colon", which has been
2259 given for certain expansion errors for a long time, was not being given
2260 for the ${if def:h_colon_omitted{... case.
2262 PH/34 The spec says: "With one important exception, whenever a domain list is
2263 being scanned, $domain contains the subject domain." There was at least
2264 one case where this was not true.
2266 PH/35 The error "getsockname() failed: connection reset by peer" was being
2267 written to the panic log as well as the main log, but it isn't really
2268 panic-worthy as it just means the connection died rather early on. I have
2269 removed the panic log writing for the ECONNRESET error when getsockname()
2272 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
2273 runs only) independently of the message's sender address. This meant
2274 that, if the 4xx error was in fact related to the sender, a different
2275 message to the same recipient with a different sender could confuse
2276 things. In particualar, this can happen when sending to a greylisting
2277 server, but other circumstances could also provoke similar problems.
2278 I have changed the default so that the retry time for these errors is now
2279 based a combination of the sender and recipient addresses. This change
2280 can be overridden by setting address_retry_include_sender=false in the
2283 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
2284 remote server are returned as part of bounce messages. This was not
2285 happening for LMTP over a pipe (the lmtp transport), but now it is the
2286 same for both kinds of LMTP.
2288 PH/38 Despite being documented as not happening, Exim was rewriting addresses
2289 in header lines that were in fact CNAMEs. This is no longer the case.
2291 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
2292 and queue runs started by the daemon processed all messages. This has
2293 been fixed so that -R and -S can now usefully be given with -q<time>.
2295 PH/40 Import PCRE release 6.7 (fixes some bugs).
2297 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
2299 PH/42 Give an error if -q is specified more than once.
2301 PH/43 Renamed the variables $interface_address and $interface_port as
2302 $received_ip_address and $received_port, to make it clear that these
2303 values apply to message reception, and not to the outgoing interface when
2304 a message is delivered. (The old names remain recognized, of course.)
2306 PH/44 There was no timeout on the connect() call when using a Unix domain
2307 socket in the ${readsocket expansion. There now is.
2309 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
2310 be meaningful with "accept".
2312 SC/01 Eximstats V1.43
2313 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
2315 SC/02 Eximstats V1.44
2316 Use a glob alias rather than an array ref in the generated
2317 parser. This improves both readability and performance.
2319 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
2320 Collect SpamAssassin and rejection statistics.
2321 Don't display local sender or destination tables unless
2322 there is data to show.
2323 Added average volumes into the top table text output.
2325 SC/04 Eximstats V1.46
2326 Collect data on the number of addresses (recipients)
2327 as well as the number of messages.
2329 SC/05 Eximstats V1.47
2330 Added 'Message too big' to the list of mail rejection
2331 reasons (thanks to Marco Gaiarin).
2333 SC/06 Eximstats V1.48
2334 Mainlog lines which have GMT offsets and are too short to
2335 have a flag are now skipped.
2337 SC/07 Eximstats V1.49 (Alain Williams)
2338 Added the -emptyok flag.
2340 SC/08 Eximstats V1.50
2341 Fixes for obtaining the IP address from reject messages.
2343 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
2344 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
2345 whitesspace changes from 4.64-PH/27
2347 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
2350 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
2351 are found, allow negative numbers in numeric criteria)
2353 JJ/06 exipick.20061117.2, added new $message_body_missing variable
2355 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
2356 to match changes made in 4.64-PH/43
2358 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
2360 PH/47 Put in an explicit test for a DNS lookup of an address record where the
2361 "domain" is actually an IP address, and force a failure. This locks out
2362 those revolvers/nameservers that support "A-for-A" lookups, in
2363 contravention of the specifications.
2365 PH/48 When a host name was looked up from an IP address, and the subsequent
2366 forward lookup of the name timed out, the host name was left in
2367 $sender_host_name, contrary to the specification.
2369 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
2370 restricted to single-key lookups, Exim was not diagnosing an error if
2371 * or *@ was used with a query-style lookup.
2373 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
2375 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
2376 long ago, but noone interested enough thought of it. Let's just say that
2377 the "1.1" means that there are some new functions that weren't there at
2378 some point in the past.
2380 PH/51 Error processing for expansion failure of helo_data from an smtp
2381 transport during callout processing was broken.
2383 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
2384 tested/used via the -bh/-bhc/-bs options.
2386 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
2387 bug, fixed in subsequent PCRE releases).
2389 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
2390 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
2392 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
2398 SC/01 Use a glob alias rather than an array ref in eximstats generated
2399 parser. This improves both readability and performance.
2401 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
2402 Don't display local sender or destination tables in eximstats unless
2403 there is data to show.
2404 Added average volumes into the eximstats top table text output.
2406 SC/03 Collect data on the number of addresses (recipients) as well
2407 as the number of messages in eximstats.
2409 TF/01 Correct an error in the documentation for the redirect router. Exim
2410 does (usually) call initgroups() when daemonizing.
2412 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
2413 with consistent privilege compared to when running as a daemon.
2415 TF/03 Note in the spec that $authenticated_id is not set for local
2416 submissions from trusted users.
2418 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
2419 Thanks to Dean Brooks <dean@iglou.com> for the patch.
2421 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
2422 by adding some example configuration directives to the default
2423 configuration file. A little bit of work is required to uncomment the
2424 directives and define how usernames and passwords are checked, but
2425 there is now a framework to start from.
2427 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
2428 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
2429 without this. I don't know how relevant this is to other LDAP libraries.
2431 PH/02 Add the verb name to the "unknown ACL verb" error.
2433 PH/03 Magnus Holmgren's patch for filter_prepend_home.
2435 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
2437 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
2438 directory not expanded when it should be if an expanded home directory
2439 was set for the address (which is overridden by the transport).
2441 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
2444 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
2445 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
2446 because it is too late at that time, and has no effect.
2448 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
2449 security issue with \' (bugzilla #107). I could not use the
2450 PQescapeStringConn() function, because it needs a PGconn value as one of
2453 PH/08 When testing addresses using -bt, indicate those final addresses that
2454 are duplicates that would not cause an additional delivery. At least one
2455 person was confused, thinking that -bt output corresponded to deliveries.
2456 (Suppressing duplicates isn't a good idea as you lose the information
2457 about possibly different redirections that led to the duplicates.)
2459 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
2460 systems where poll() doesn't work, in particular OS X.
2462 PH/10 Added more information to debugging output for retry time not reached.
2464 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
2465 operations in malware.c.
2467 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
2470 PH/13 If write_rejectlog was set false when logging was sent to syslog with
2471 syslog_duplication set false, log lines that would normally be written
2472 both the the main log and to the reject log were not written to syslog at
2475 PH/14 In the default configuration, change the use of "message" in ACL warn
2476 statements to "add_header".
2478 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
2479 not followed by a command (e.g. "seen endif").
2481 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
2482 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
2485 PH/17 Added extra conditions to the default value of delay_warning_condition
2489 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
2490 { match{$h_precedence:}{(?i)bulk|list|junk} } \
2491 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
2494 The Auto-Submitted: and various List- headers are standardised, whereas I
2495 don't think Precedence: ever was.
2497 PH/18 Refactored debugging code in route_finduser() to show more information,
2498 in particular, the error code if getpwnam() issues one.
2500 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
2501 This is apparently needed in addition to the PH/07 change above to avoid
2502 any possible encoding problems.
2504 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
2505 but not after initializing Perl.
2507 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
2508 output them only if debugging. By default they are written stderr,
2509 apparently, which is not desirable.
2511 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
2514 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
2517 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
2519 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
2520 authenticated or an ident call has been made. Suppress the default
2521 values for $authenticated_id and $authenticated_sender (but permit -oMai
2522 and -oMas) when testing with -bh.
2524 PH/24 Re-jigged the order of the tests in the default configuration so that the
2525 tests for valid domains and recipients precede the DNS black list and CSA
2526 tests, on the grounds that those ones are more expensive.
2528 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
2529 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
2530 This bug exists in every version of Exim that I still have, right back to
2533 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
2534 However, an attempt to turn on case-sensitivity in a regex key by
2535 including (?-i) didn't work because the subject string was already
2536 lowercased, and the effects were non-intuitive. It turns out that a
2537 one-line patch can be used to allow (?-i) to work as expected.
2543 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
2544 other effects) broke the use of negated acl sub-conditions.
2546 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
2549 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
2550 "Deny" causes Exim to reject the incoming connection with a 554 error.
2551 Unfortunately, if there is a major crisis, such as a disk failure,
2552 tcp-wrappers gives "deny", whereas what one would like would be some
2553 kind of temporary error. A kludge has been added to help with this.
2554 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
2555 554 error is used if errno is still zero or contains ENOENT (which occurs
2556 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
2559 PH/03 Add -lutil to the default FreeBSD LIBS setting.
2561 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
2562 errors. Otherwise a message that provokes a temporary error (when other
2563 messages do not) can cause a whole host to time out.
2565 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
2566 addresses were routed directly to files or pipes from a redirect router.
2567 File deliveries just didn't batch; pipe deliveries might have suffered
2570 PH/06 A failure to get a lock for a hints database would erroneously always say
2571 "Failed to get write lock", even when it was really a read lock.
2573 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
2574 of 0600. This has been changed to use the value of the lockfile_mode
2575 option (which defaults to 0600).
2577 PH/08 Applied small patch from the Sieve maintainer.
2579 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
2580 folder from quota calculations, a direct delivery into this folder messed
2581 up the contents of the maildirsize file. This was because the regex was
2582 used only to exclude .Trash (or whatever) when the size of the mailbox
2583 was calculated. There was no check that a delivery was happening into an
2584 excluded directory. This bug has been fixed by ignoring all quota
2585 processing for deliveries into excluded directories.
2587 PH/10 Added the maildirfolder_create_regex option to appendfile.
2593 PH/01 The code for finding all the local interface addresses on a FreeBSD
2594 system running IPv6 was broken. This may well have applied to all BSD
2595 systems, as well as to others that have similar system calls. The broken
2596 code found IPv4 interfaces correctly, but gave incorrect values for the
2597 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
2598 that it would not match correctly against @[] and not recognize the IPv6
2601 PH/02 The ipliteral router was not recognizing addresses of the form user@
2602 [ipv6:....] because it didn't know about the "ipv6:" prefix.
2604 PH/03 Added disable_ipv6.
2606 PH/04 Changed $reply_address to use the raw form of the headers instead of the
2607 decoded form, because it is most often used to construct To: headers
2608 lines in autoreplies, and the decoded form may well be syntactically
2609 invalid. However, $reply_address has leading white space removed, and all
2610 newlines turned into spaces so that the autoreply transport does not
2613 PH/05 If group was specified without a user on a router, and no group or user
2614 was specified on a transport, the group from the router was ignored.
2616 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
2617 for visible compile-time settings that can be used to change these
2618 numbers, for those that want even more. Backwards compatibility with old
2619 spool files has been maintained. However, going back to a previous Exim
2620 release will lost any variables that are in spool files.
2622 PH/07 Two small changes when running in the test harness: increase delay when
2623 passing a TCP/IP connection to a new process, in case the original
2624 process has to generate a bounce, and remove special handling of
2625 127.0.0.2 (sic), which is no longer necessary.
2627 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
2628 be the same on different OS.
2630 PH/09 Moved a debug statement in filter processing to avoid a race problem when
2633 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
2634 whether --show-vars was specified or not
2636 JJ/02 exipick: Added support for new ACL variable spool format introduced
2639 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
2640 syntactically invalid From: or Reply-to: line, and a filter used this to
2641 generate an autoreply, and therefore failed to obtain an address for the
2642 autoreply, Exim could try to deliver to a non-existent relative file
2643 name, causing unrelated and misleading errors. What now happens is that
2644 it logs this as a hard delivery error, but does not attempt to create a
2647 PH/11 The exinext utility has a -C option for testing purposes, but although
2648 the given file was scanned by exinext itself; it wasn't being passed on
2649 when Exim was called.
2651 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
2652 an end-of-file indication when reading a command response.
2654 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
2655 compiled. In many other places in Exim, IPv6 addresses are always
2656 recognized, so I have changed this. It also means that IPv4 domain
2657 literals of the form [IPV4:n.n.n.n] are now always recognized.
2659 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
2660 used if the router is not running as root, for example, when verifying at
2661 ACL time, or when using -bh. The debugging output from this situation was
2662 non-existent - all you got was a failure to exec. I have made two
2665 (a) Failures to set uid/gid, the current directory, or a process leader
2666 in a subprocess such as that created by queryprogram now generate
2667 suitable debugging ouput when -d is set.
2669 (b) The queryprogram router detects when it is not running as root,
2670 outputs suitable debugging information if -d is set, and then runs
2671 the subprocess without attempting to change uid/gid.
2673 PH/15 Minor change to Makefile for building test_host (undocumented testing
2676 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
2677 additional section of a DNS packet that returns MX or SRV records.
2678 Instead, it always explicitly searches for A/AAAA records. This avoids
2679 major problems that occur when a DNS server includes only records of one
2680 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
2681 fixed another bug: if SRV records were looked up and the corresponding
2682 address records were *not* found in the additional section, the port
2683 values from the SRV records were lost.
2685 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
2686 using the correct key (the original address) when searching the retry
2687 rules in order to find which one to use for generating the retry hint.
2689 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
2690 adding the default one. Similarly, if it contains a Reply-To: header, the
2691 errors_reply_to option, if set, is not used.
2693 PH/19 When calculating a retry time, Exim used to measure the "time since
2694 failure" by looking at the "first failed" field in the retry record. Now
2695 it does not use this if it is later than than the arrival time of the
2696 message. Instead it uses the arrival time. This makes for better
2697 behaviour in cases where some deliveries succeed, thus re-setting the
2698 "first failed" field. An example is a quota failure for a huge message
2699 when small messages continue to be delivered. Without this change, the
2700 "time since failure" will always be short, possible causing more frequent
2701 delivery attempts for the huge message than are intended.
2702 [Note: This change was subsequently modified - see PH/04 for 4.62.]
2704 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
2705 $1, $2, $3) because the numerical variables can be reset during some
2706 expansion items (e.g. "match"), thereby losing the authentication data.
2708 PH/21 Make -bV show the size of off_t variables so that the test suite can
2709 decide whether to run tests for quotas > 2G.
2711 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
2712 mailbox_size, and mailbox_filecount in the appendfile transport. If a
2713 filecount value is greater than 2G or if a quota value is greater than 2G
2714 on a system where the size of off_t is not greater than 4, a panic error
2717 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
2718 never match. The debug and -bh output now contains an explicit error
2719 message indicating a malformed IPv4 address or mask.
2721 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
2722 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
2723 PH/23 above applies.
2725 PH/25 Do not write to syslog when running in the test harness. The only
2726 occasion when this arises is a failure to open the main or panic logs
2727 (for which there is an explicit test).
2729 PH/26 Added the /no_tell option to "control=freeze".
2731 PH/27 If a host name lookup failed very early in a connection, for example, if
2732 the IP address matched host_lookup and the reverse lookup yielded a name
2733 that did not have a forward lookup, an error message of the form "no IP
2734 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
2735 could be logged. Now it outputs the IP address instead of "NULL".
2737 PH/28 An enabling patch from MH: add new function child_open_exim2() which
2738 allows the sender and the authenticated sender to be set when
2739 submitting a message from within Exim. Since child_open_exim() is
2740 documented for local_scan(), the new function should be too.
2742 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
2743 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
2744 results in an empty string is now treated as unset.
2746 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
2748 PH/31 Added sender_verify_fail logging option.
2750 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
2751 needed by RFC 822 but not by RFC 2822 was commented out. I have now
2752 tidied the source and removed it altogether.
2754 PH/33 When a queue run was abandoned because the load average was too high, a
2755 log line was always written; now it is written only if the queue_run log
2756 selector is set. In addition, the log line for abandonment now contains
2757 information about the queue run such as the pid. This is always present
2758 in "start" and "stop" lines but was omitted from the "abandon" line.
2760 PH/34 Omit spaces between a header name and the colon in the error message that
2761 is given when verify = headers_syntax fails (if there are lots of them,
2762 the message gets confusing).
2764 PH/35 Change the default for dns_check_names_pattern to allow slashes within
2765 names, as there are now some PTR records that contain slashes. This check
2766 is only to protect against broken name servers that fall over on strange
2767 characters, so the fact that it applies to all lookups doesn't matter.
2769 PH/36 Now that the new test suite is complete, we can remove some of the
2770 special code in Exim that was needed for the old test suite. For example,
2771 sorting DNS records because real resolvers return them in an arbitrary
2772 order. The new test suite's fake resolver always returns records in the
2775 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
2776 bounces) except when queue_only is set, to avoid logging races between
2777 the different processes.
2779 PH/38 Panic-die if .include specifies a non-absolute path.
2781 PH/39 A tweak to the "H" retry rule from its user.
2783 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
2784 a label. They prevented compilation on older perls.
2786 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
2787 a warning to be raised on newish perls.
2789 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
2790 on queue. Changes to match documented behaviour of showing count of
2791 messages matching specified criteria.
2793 PH/40 Changed the default ident timeout from 30s to 5s.
2795 PH/41 Added support for the use of login_cap features, on those BSD systems
2796 that have them, for controlling the resources used by pipe deliveries.
2798 PH/42 The content-scanning code uses fopen() to create files in which to put
2799 message data. Previously it was not paying any attention to the mode of
2800 the files. Exim runs with umask(0) because the rest of the code creates
2801 files with open(), and sets the required mode explicitly. Thus, these
2802 files were ending up world-writeable. This was not a big issue, because,
2803 being within the spool directory, they were not world-accessible. I have
2804 created a function called modefopen, which takes an additional mode
2805 argument. It sets umask(777), creates the file, chmods it to the required
2806 mode, then resets the umask. All the relevant calls to fopen() in the
2807 content scanning code have been changed to use this function.
2809 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
2810 to 24 hours. This avoids potential overflow problems when processing G
2811 and H retry rules. I suspect nobody ever tinkers with this value.
2813 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
2815 PH/45 When the plaintext authenticator is running as a client, the server's
2816 challenges are checked to ensure they are valid base64 strings. By
2817 default, the authentication attempt is cancelled if an invalid string is
2818 received. Setting client_ignore_invalid_base64 true ignores these errors.
2819 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
2820 they are received. Thus, the responses can be made to depend on the
2821 challenges. If an invalid string is ignored, an empty string is placed in
2824 PH/46 Messages that are created by the autoreply transport now contains a
2825 References: header, in accordance with RFCs 2822 and 3834.
2827 PH/47 Added authenticated_sender_force to the smtp transport.
2829 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
2831 PH/49 Installed latest patch from the Sieve maintainer.
2833 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
2834 was also set, the appendfile transport was unnecessarily scanning a
2835 directory of message files (e.g. for maildir delivery) to find the count
2836 of files (along with the size), even though it did not need this
2837 information. It now does the scan only if it needs to find either the
2838 size of the count of files.
2840 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
2842 PH/52 Two bugs concerned with error handling when the smtp transport is
2845 (i) Exim was not creating retry information for temporary errors given
2846 for individual recipients after the DATA command when the smtp transport
2847 was used in LMTP mode. This meant that they could be retried too
2848 frequently, and not timed out correctly.
2850 (ii) Exim was setting the flag that allows error details to be returned
2851 for LMTP errors on RCPT commands, but not for LMTP errors for individual
2852 recipients that were returned after the DATA command.
2854 PH/53 This is related to PH/52, but is more general: for any failing address,
2855 when detailed error information was permitted to be returned to the
2856 sender, but the error was temporary, then after the final timeout, only
2857 "retry timeout exceeded" was returned. Now it returns the full error as
2858 well as "retry timeout exceeded".
2860 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
2861 do this, and (what is worse) MTAs that accept it.
2863 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
2864 will now be deprecated.
2866 PH/56 New os.c-cygwin from the Cygwin maintainer.
2868 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
2869 formats (previously only available in exim formats via -bpr, -bpru,
2870 and -bpra. Now also available in native and exiqgrep formats)
2872 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
2873 with very large, slow to parse queues
2875 JJ/08 exipick: added ! as generic prefix to negate any criteria format
2877 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
2879 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
2880 responses to authentication challenges, though it was showing the
2881 challenges; (ii) I've removed the CR characters from the debug output for
2884 PH/58 Allow for the insertion of a newline as well as a space when a string
2885 is turned into more than one encoded-word during RFC 2047 encoding. The
2886 Sieve code now uses this.
2888 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
2889 data_4xx, lost_connection, tls_required.
2891 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
2892 message was being sent as an SMTP response.
2894 PH/61 Add -l and -k options to exicyclog.
2896 PH/62 When verifying, if an address was redirected to one new address, so that
2897 verification continued, and the new address failed or deferred after
2898 having set something in $address_data, the value of $address_data was not
2899 passed back to the ACL. This was different to the case when no
2900 redirection occurred. The value is now passed back in both cases.
2902 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
2903 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
2904 use login_cap.h, so on its own it isn't the distinguishing feature. The
2905 new name refers directly to the setclassresources() function.
2907 PH/65 Added configuration files for NetBSD3.
2909 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
2911 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
2912 is preferred over IPv4.
2914 PH/68 The bounce_return_message and bounce_return_body options were not being
2915 honoured for bounces generated during the reception of non-SMTP messages.
2916 In particular, this applied to messages rejected by the ACL. This bug has
2917 been fixed. However, if bounce_return_message is true and bounce_return_
2918 body is false, the headers that are returned for a non-SMTP message
2919 include only those that have been read before the error was detected.
2920 (In the case of an ACL rejection, they have all been read.)
2922 PH/69 The HTML version of the specification is now built in a directory called
2923 spec_html instead of spec.html, because the latter looks like a path with
2924 a MIME-type, and this confuses some software.
2926 PH/70 Catch two compiler warnings in sieve.c.
2928 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
2929 function verify_get_ident() calls ip_connect() to connect a socket, but
2930 if the "connect()" function timed out, ip_connect() used to close the
2931 socket. However, verify_get_ident() also closes the socket later, and in
2932 between Exim writes to the log, which may get opened at this point. When
2933 the socket was closed in ip_connect(), the log could get the same file
2934 descriptor number as the socket. This naturally causes chaos. The fix is
2935 not to close the socket in ip_connect(); the socket should be closed by
2936 the function that creates it. There was only one place in the code where
2937 this was missing, in the iplookup router, which I don't think anybody now
2938 uses, but I've fixed it anyway.
2940 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
2941 well as to direct DNS lookups. Otherwise the handling of names in host
2942 lists is inconsistent and therefore confusing.
2948 PH/01 Two changes to the default runtime configuration:
2950 (1) Move the checks for relay_from_hosts and authenticated clients from
2951 after to before the (commented out) DNS black list checks.
2953 (2) Add control=submission to the relay_from_hosts and authenticated
2954 clients checks, on the grounds that messages accepted by these
2955 statements are most likely to be submissions.
2957 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
2959 (1) Generate an error if the third argument for the ${prvs expansion is
2962 (2) Treat a missing third argument of ${prvscheck as if it were an empty
2965 (3) Reset the variables that are obtained from the first argument of
2966 ${prvscheck and used in the second argument before leaving the code,
2967 because their memory is reclaimed, so using them afterwards may do
2970 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
2971 one (it's much easier than Tom thought :-).
2973 (5) Because of (4), we can now allow for the use of $prvscheck_result
2974 inside the third argument.
2976 PH/03 For some reason, the default setting of PATH when running a command from
2977 a pipe transport was just "/usr/bin". I have changed it to
2980 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
2981 anything to be listed in the output from -bV.
2983 PH/05 When a filter generated an autoreply, the entire To: header line was
2984 quoted in the delivery log line, like this:
2986 => >A.N.Other <ano@some.domain> <original@ddress> ...
2988 This has been changed so that it extracts the operative address. There
2989 may be more than one such address. If so, they are comma-separated, like
2992 => >ano@some.domain,ona@other.domain <original@ddress> ...
2994 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
2995 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
2996 not being looked up in the rDNS to get a host name, Exim was showing the
2997 IP address twice in Received: lines, even though the IP addresses were
2998 identical. For example:
3000 Received: from [1.2.3.4] (helo=[1.2.3.4])
3002 However, if the real host name was known, it was omitting the HELO data
3003 if it matched the actual IP address. This has been tidied up so that it
3004 doesn't show the same IP address twice.
3006 PH/07 When both +timestamp and +memory debugging was on, the value given by
3007 $tod_xxx expansions could be wrong, because the tod_stamp() function was
3008 called by the debug printing, thereby overwriting the timestamp buffer.
3009 Debugging no longer uses the tod_stamp() function when +timestamp is set.
3011 PH/08 When the original message was included in an autoreply transport, it
3012 always said "this is a copy of the message, including all the headers",
3013 even if body_only or headers_only was set. It now gives an appropriate
3016 PH/09 Applied a patch from the Sieve maintainer which:
3018 o fixes some comments
3019 o adds the (disabled) notify extension core
3020 o adds some debug output for the result of if/elsif tests
3021 o points to the current vacation draft in the documentation
3022 and documents the missing references header update
3026 o fixes a bug in processing the envelope test (when testing
3027 multiple envelope elements, the last element determinted the
3030 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
3031 Electronic Mail") by including:
3033 Auto-submitted: auto-generated
3035 in the messages that it generates (bounce messages and others, such as
3036 warnings). In the case of bounce messages for non-SMTP mesages, there was
3037 also a typo: it was using "Auto_submitted" (underscore instead of
3038 hyphen). Since every message generated by Exim is necessarily in response
3039 to another message, thes have all been changed to:
3041 Auto-Submitted: auto-replied
3043 in accordance with these statements in the RFC:
3045 The auto-replied keyword:
3047 - SHOULD be used on messages sent in direct response to another
3048 message by an automatic process,
3050 - MUST NOT be used on manually-generated messages,
3052 - MAY be used on Delivery Status Notifications (DSNs) and Message
3053 Disposition Notifications (MDNs),
3055 - MUST NOT be used on messages generated by automatic or periodic
3056 processes, except for messages which are automatic responses to
3059 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
3060 to the default Received: header definition.
3062 PH/12 Added log selector acl_warn_skipped (default on).
3064 PH/13 After a successful wildlsearch lookup, discard the values of numeric
3065 variables because (a) they are in the wrong storage pool and (b) even if
3066 they were copied, it wouldn't work properly because of the caching.
3068 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
3069 checking when decoding. Apparently there are clients that generate
3070 overlong encoded strings. Why am I not surprised?
3072 PH/15 If the first argument of "${if match_address" was not empty, but did not
3073 contain an "@" character, Exim crashed. Now it writes a panic log message
3074 and treats the condition as false.
3076 PH/16 In autoreply, treat an empty string for "once" the same as unset.
3078 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
3079 extension "envelope-auth". The code is finished and in agreement with
3080 other implementations, but there is no documentation so far and in fact,
3081 nobody wrote the draft yet. This extension is currently #undef'ed, thus
3082 not changing the active code.
3084 Print executed "if" and "elsif" statements when debugging is used. This
3085 helps a great deal to understand what a filter does.
3087 Document more things not specified clearly in RFC3028. I had all this
3088 sorted out, when out of a sudden new issues came to my mind. Oops."
3090 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
3093 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
3094 canonical form (as documented). However, after a host name lookup from
3095 the IP address, check_host() was doing a simple string comparison with
3096 addresses acquired from the DNS when checking that the found name did
3097 have the original IP as one of its addresses. Since any found IPv6
3098 addresses are likely to be in abbreviated form, the comparison could
3099 fail. Luckily, there already exists a function for doing the comparison
3100 by converting both addresses to binary, so now that is used instead of
3101 the text comparison.
3103 PH/20 There was another similar case to PH/19, when a complete host name was
3104 given in a host list; looking up its IP address could give an abbreviated
3105 form, whereas the current host's name might or might not be abbreviated.
3106 The same fix has been applied.
3112 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
3113 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
3116 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
3117 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
3119 PH/03 Typo: missing ".o" in src/pcre/Makefile.
3121 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
3122 header line, restrict the check to what is listed in RFCs 2369 and 2929.
3123 Also, for "Auto-Submitted", treat anything other than "no" as
3124 non-personal, in accordance with RFC 3834. (Previously it treated
3125 anything starting "auto-" as non-personal.)
3127 TF/01 The control=submission/name=... option had a problem with syntax
3128 errors if the name included a slash character. The /name= option
3129 now slurps the rest of the string, so it can include any characters
3130 but it must come last in the list of options (after /sender_retain
3133 PH/05 Some modifications to the interface to the fake nameserver for the new
3141 TK/01 Added the "success_on_redirect" address verification option. See
3142 NewStuff for rationale and an example.
3144 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
3146 PH/02 Patch to exigrep to allow it to work on syslog lines.
3148 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
3149 fread() to skip over the body file's header line, because in Cygwin the
3150 header line is locked and is inaccessible.
3152 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
3153 co-exist for some time) to make it clear that it is the Exim ID that is
3154 referenced, not the Message-ID: header line.
3156 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
3157 string_format() function, because snprintf() does not exist on all
3160 PH/06 The use of forbid_filter_existstest now also locks out the use of the
3161 ${stat: expansion item.
3163 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
3164 protocol synchronization error", to keep the pedants happy.
3166 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
3167 well as for IRIX systems, when gcc is being used. See the host.c source
3170 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
3172 PH/10 Named domain lists were not working if used in a queue_smtp_domains
3175 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
3176 transport and to the smtp transport in LMTP mode.
3178 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
3180 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
3181 run a filter in a subprocess. This could lead to confusion in subsequent
3182 lookups in the parent process. There should also be a search_tidyup() at
3183 the end of the subprocess.
3185 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
3186 only if the host matched helo_try_verify_hosts, which caused the
3187 verification to occur when the EHLO/HELO command was issued. The ACL just
3188 tested the remembered result. Now, if a previous verification attempt has
3189 not happened, "verify = helo" does it there and then.
3191 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
3193 TK/03 Fix log output including CR from clamd.
3195 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
3196 exist provoked a memory error which could cause a segfault.
3198 PH/15 Installed PCRE 6.2
3200 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
3202 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
3203 of the problem. Specifically, suggested +O2 rather than +O1 for the
3206 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
3208 PH/20 If a delivery was routed to a non-standard port by means of an SRV
3209 record, the port was not correctly logged when the outgoing_port log
3210 selector was set (it logged the transort's default port).
3212 PH/21 Added support for host-specific ports to manualroute, queryprogram,
3213 fallback_hosts, and "hosts" in the smtp transport.
3215 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
3216 host errors such as "Connection refused".
3218 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
3219 authentication with radiusclient 0.4.9:
3221 - Error returned from rc_read_config was caught wrongly
3222 - Username/password not passed on to radius server due to wrong length.
3224 The presumption is that some radiusclient API changes for 4.51/PH/17
3225 were not taken care of correctly. The code is still untested by me (my
3226 Linux distribution still has 0.3.2 of radiusclient), but it was
3227 contributed by a Radius user.
3229 PH/24 When doing a callout, the value of $domain wasn't set correctly when
3230 expanding the "port" option of the smtp transport.
3232 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
3233 while reading a MIME header. Thanks to Tom Hughes for a patch.
3235 PH/24 Include config.h inside local_scan.h so that configuration settings are
3238 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
3239 that in an ACL for RCPT (for example), you can examine exactly what was
3242 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
3243 commands, but it was not correctly comparing the address with the actual
3244 client host address. Thus, it would show the EHLO address in Received:
3245 header lines when this was not necessary.
3247 PH/27 Added the % operator to ${eval:}.
3249 PH/28 Exim tries to create and chdir to its spool directory when it starts;
3250 it should be ignoring failures (because with -C, for example, it has lost
3251 privilege). It wasn't ignoring creation failures other than "already
3254 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
3257 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
3258 because an input line was too long, either on its own, or by virtue of
3259 too many continuations, the temporary file was not being removed, and the
3260 return code was incorrect.
3262 PH/31 Missing "BOOL" in function definition in filtertest.c.
3264 PH/32 Applied Sieve patches from the maintainer.
3266 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
3268 PH/33 Added "verify = not_blind".
3270 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
3271 Local/Makefile (with some defaults set). These are used in built scripts
3272 such as exicyclog, but they have never been used in the exim_install
3273 script (though there are many overriding facilities there). I have
3274 arranged that the exim_install script now takes note of these two
3277 PH/35 Installed configuration files for Dragonfly.
3279 PH/36 When a locally submitted message by a trusted user did not contain a
3280 From: header, and the sender address was obtained from -f or from an SMTP
3281 MAIL command, and the trusted user did not use -F to supply a sender
3282 name, $originator_name was incorrectly used when constructing a From:
3283 header. Furthermore, $originator_name was used for submission mode
3284 messages from external hosts without From: headers in a similar way,
3285 which is clearly wrong.
3287 PH/37 Added control=suppress_local_fixups.
3289 PH/38 When log_selector = +received_sender was set, and the addition of the
3290 sender made the log line's construction buffer exactly full, or one byte
3291 less than full, an overflow happened when the terminating "\n" was
3294 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
3295 when the result of a list match is failure because a DNS lookup failed.
3297 PH/40 RM_COMMAND is now used in the building process.
3299 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
3300 the "build-* directories that it finds.
3302 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
3303 address in a domain literal was a prefix of an interface address.
3305 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
3306 when verifying a sender address, unless rewrite_headers is false.
3308 PH/44 Wrote a long comment about why errors_to addresses are verified as
3309 recipients, not senders.
3311 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
3312 the ratelimit ACL was added.
3314 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
3316 PH/46 Added extra information about PostgreSQL errors to the error string.
3318 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
3319 avoiding the need to install special zones in a real server. This is
3320 backwards compatible; if it can't find the fake resolver, it drops back.
3321 Thus, both old and new test suites can be run.
3323 TF/02 Added util/ratelimit.pl
3325 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
3326 clock is set back in time.
3328 TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
3329 Candler <B.Candler@pobox.com>.
3331 TF/05 The fix for PH/43 was not completely correct; widen_domains is always
3332 OK for addresses that are the result of redirections.
3334 PH/48 A number of further additions for the benefit of the new test suite,
3335 including a fake gethostbyname() that interfaces to the fake DNS resolver
3338 TF/06 The fix for widen_domains has also been applied to qualify_single and
3339 search_parents which are the other dnslookup options that can cause
3342 PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
3345 PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
3347 TF/07 Exim produced the error message "an SRV record indicated no SMTP
3348 service" if it encountered an MX record with an empty target hostname.
3349 The message is now "an MX or SRV record indicated no SMTP service".
3351 TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
3352 if the DNS of the sending site is misconfigured. This is quite a
3353 common situation. This change restores the behaviour of treating a
3354 helo verification defer as a failure.
3356 PH/51 If self=fail was set on a router, the bounce message did not include the
3357 actual error message.
3363 TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
3365 PH/01 When a transport filter timed out in a pipe delivery, and the pipe
3366 command itself ended in error, the underlying message about the transport
3367 filter timeout was being overwritten with the pipe command error. Now the
3368 underlying error message should be appended to the second error message.
3370 TK/01 Fix poll() being unavailable on Mac OSX 10.2.
3372 PH/02 Reduce the amount of output that "make" produces by default. Full output
3373 can still be requested.
3375 PH/03 The warning log line about a condition test deferring for a "warn" verb
3376 was being output only once per connection, rather than after each
3377 occurrence (because it was using the same function as for successful
3378 "warn" verbs). This seems wrong, so I have changed it.
3380 TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
3381 it should not have, which might have caused a crash in the right
3382 circumstances, but probably never did.
3384 PH/04 Installed a modified version of Tony Finch's patch to make submission
3385 mode fix the return path as well as the Sender: header line, and to
3386 add a /name= option so that you can make the user's friendly name appear
3389 TF/03 Added the control = fakedefer ACL modifier.
3391 TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
3392 Mark Lowes for thorough testing.
3394 TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
3396 TK/03 Merged latest SRS patch from Miles Wilton.
3398 PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
3399 with the definition in sysexits.h (which is #included earlier).
3400 Fortunately, Exim does not actually use EX_OK. The code used to try to
3401 preserve the sysexits.h value, by assumimg that macro definitions were
3402 scanned for macro replacements. I have been disabused of this notion,
3403 so now the code just undefines EX_OK before #including unistd.h.
3405 PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
3406 in the smtp transport. When a block could not be written in a single
3407 write() function, the timeout was being re-applied to each part-write.
3408 This seems wrong - if the receiver was accepting one byte at a time it
3409 would take for ever. The timeout is now adjusted when this happens. It
3410 doesn't have to be particularly precise.
3412 TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
3413 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
3415 PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
3416 without a domain if the check to <postmaster@domain> fails.
3418 SC/01 Eximstats: added -xls and the ability to specify output files
3419 (patch written by Frank Heydlauf).
3421 SC/02 Eximstats: use FileHandles for outputing results.
3423 SC/03 Eximstats: allow any combination of xls, txt, and html output.
3425 SC/04 Eximstats: fixed display of large numbers with -nvr option
3427 SC/05 Eximstats: fixed merging of reports with empty tables.
3429 SC/06 Eximstats: added the -include_original_destination flag
3431 SC/07 Eximstats: removed tabs and trailing whitespace.
3433 TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
3435 TK/06 MBOX spool code: Add real "From " MBOX separator line
3436 so the .eml file is really in mbox format (even though
3437 most programs do not really care). Patch from Alex Miller.
3439 TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
3440 The latter is generated from $received_to and is only set if the
3441 message has one envelope recipient. SA can use these headers,
3442 obviously out-of-the-box. Patch from Alex Miller.
3444 PH/08 The ${def test on a variable was returning false if the variable's
3445 value was "0", contrary to what the specification has always said!
3446 The result should be true unless the variable is empty.
3448 PH/09 The syntax error of a character other than { following "${if
3449 def:variable_name" (after optional whitespace) was not being diagnosed.
3450 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
3451 accidental colon was present, for example, could give incorrect results.
3453 PH/10 Tidied the code in a number of places where the st_size field of a stat()
3454 result is used (not including appendfile, where other changes are about
3457 PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
3458 This involved changing a lot of size variables from int to off_t. It
3459 should work with maildirs and everything.
3461 TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
3462 spamd dying while we are connected to it.
3464 TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
3467 PH/12 Applied Alex Kiernan's patch for the API change for the error callback
3468 function for BDB 4.3.
3470 PH/13 Changed auto_thaw such that it does not apply to bounce messages.
3472 PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
3473 the sources for PCRE have been re-arranged and more files are now
3476 PH/15 The code I had for printing potentially long long variables in PH/11
3477 above was not the best (it lost precision). The length of off_t variables
3478 is now inspected at build time, and an appropriate printing format (%ld
3479 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
3480 to be "long long int" or "long int". This is needed for the internal
3481 formatting function string_vformat().
3483 PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
3484 the configuration file to be ":syslog", then the script "guesses" where
3485 the logs files are, rather than using the compiled in default. In our
3486 case the guess is not the same as the compiled default, so the script
3487 suddenly stopped working when I started to use syslog. The patch checks
3488 to see if log_file_path is "". If so, it attempts to read it from exim
3489 with no configuration file to get the compiled in version, before it
3490 falls back to the previous guessing code."
3492 TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
3493 implementing BATV in an Exim configuration. See NewStuff for the gory
3496 PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
3497 Makefile that are specific to HP-UX.
3499 PH/18 If the "use_postmaster" option was set for a recipient callout together
3500 with the "random" option, the postmaster address was used as the MAIL
3501 FROM address for the random test, but not for the subsequent recipient
3502 test. It is now used for both.
3504 PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
3505 patch removes a few documentation additions to RFC 3028, because the
3506 latest draft now contains them. It adds the new en;ascii-case comparator
3507 and a new error check for 8bit text in MIME parts. Comparator and
3508 require names are now matched exactly. I enabled the subaddress
3509 extension, but it is not well tested yet (read: it works for me)."
3511 PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
3512 rework some of the code of TK/09 above to avoid the hardwired use of
3513 "%lld" and "long long". Replaced the call to snprintf() with a call to
3516 PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
3517 records point to non-existent hosts", "retry timeout exceeded", and
3518 "retry time not reached for any host after a long failure period".
3520 PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
3521 experimental DomainKeys support:
3523 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
3524 (2) On an error such as an illegally used "control", the wrong name for
3525 the control was given.
3527 These problems did NOT occur unless DomainKeys support was compiled.
3529 PH/23 Added daemon_startup_retries and daemon_startup_sleep.
3531 PH/24 Added ${if match_ip condition.
3533 PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
3534 databases so that it will be absolutely obvious if a crash occurs in the
3535 DB library. This is a regular occurrence (often caused by mis-matched
3538 PH/26 Insert a lot of missing (void) casts for functions such as chown(),
3539 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
3540 picked up on a user's system that detects such things. There doesn't seem
3541 to be a gcc warning option for this - only an attribute that has to be
3542 put on the function's prototype. It seems that in Fedora Core 4 they have
3543 set this on a number of new functions. No doubt there will be more in due
3546 PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
3547 specify a transport. However, if an address that was verified by such a
3548 router was the subject of a callout, Exim crashed because it tried to
3549 read the rcpt_include_affixes from the non-existent transport. Now it
3550 just assumes that the setting of that option is false. This bug was
3551 introduced by 4.51/PH/31.
3553 PH/28 Changed -d+all to exclude +memory, because that information is very
3554 rarely of interest, but it makes the output a lot bigger. People tend to
3555 do -d+all out of habit.
3557 PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
3558 code in os-type was giving problems when libc.so lives in lib64, like on
3561 PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
3562 aren't the modern standard, and it seems that some systems' include files
3563 don't always have them. Exim was already checking for some of the newer
3564 ones like T_AAAA, and defining it itself. I've added checks for all the
3565 record types that Exim uses.
3567 PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
3568 not automatically generating a new one, as it is supposed to. This
3569 prevented TLS from working. If the file did exist, but contained invalid
3570 data, a new version was generated, as expected. It was only the case of a
3571 non-existent file that was broken.
3573 TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
3574 with a change in libdomainkeys > 0.64.
3576 TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
3577 from DNS. If the selector record carries the flag, it now has
3578 precedence over the domain-wide flag.
3580 TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
3582 PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
3583 the use of a port name that isn't defined in /etc/services) occurred, the
3584 message was deferred as in a normal delivery, and thus remained on the
3585 spool, instead of being failed because of the mua_wrapper setting. This
3586 is now fixed, and I tidied up some of the mua_wrapper messages at the
3589 SC/08 Eximstats: whilst parsing the mainlog(s), store information about
3590 the messages in a hash of arrays rather than using individual hashes.
3591 This is a bit cleaner and results in dramatic memory savings, albeit
3592 at a slight CPU cost.
3594 SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
3595 as requested by Marc Sherman.
3597 SC/10 Eximstats: added histograms for user specified patterns as requested
3600 SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
3602 PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
3603 fopen() in the content-scanning modules that did not already have it.
3609 TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
3610 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
3612 TK/02 Fix ACL "control" statement not being available in MIME ACL.
3614 TK/03 Fix ACL "regex" condition not being available in MIME ACL.
3616 PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
3617 to test Sieve filters that use "vacation".
3619 PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
3620 that changes the way the GnuTLS parameters are stored in the cache file.
3621 The new format can be generated externally. For backward compatibility,
3622 if the data in the cache doesn't make sense, Exim assumes it has read an
3623 old-format file, and it generates new data and writes a new file. This
3624 means that you can't go back to an older release without removing the
3627 PH/03 A redirect router that has both "unseen" and "one_time" set does not
3628 work if there are any delivery delays because "one_time" forces the
3629 parent to be marked "delivered", so its unseen clone is never tried
3630 again. For this reason, Exim now forbids the simultaneous setting of
3633 PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
3634 redirected to themselves ("homonym" addresses). Read the long ChangeLog
3635 entry if you want to know the details. The fix, however, neglected to
3636 consider the case when local delivery batching is involved. The test for
3637 "previously delivered" was not happening when checking to see if an
3638 address could be batched with a previous (undelivered) one; under
3639 certain circumstances this could lead to multiple deliveries to the same
3642 PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
3643 in its include files, and this causes problems building Exim.
3645 PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
3646 header_syntax) but Exim was just ignoring anything given after a slash.
3647 In particular, this caused confusion with an attempt to use "verify =
3648 reverse_host_lookup/defer_ok". An error is now given when options are
3649 supplied for verify items that do not have them. (Maybe reverse_host_
3650 lookup should have a defer_ok option, but that's a different point.)
3652 PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
3653 defined by RFC 821) to 2048, because there were problems with some AUTH
3654 commands, and RFC 1869 says the size should be increased for extended
3655 SMTP commands that take arguments.
3657 PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
3660 PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
3661 "unknown" error; now it says that the functionality isn't in the binary.
3663 PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
3664 an address' error message when a string expansion fails (syntax or
3665 whatever). Otherwise the password may appear in the log. Following change
3666 PH/42 below, there is no longer a chance of it appearing in a bounce
3669 PH/11 Installed exipick version 20050225.0 from John Jetmore.
3671 PH/12 If the last host in a fallback_hosts list was multihomed, only the first
3672 of its addresses was ever tried. (Bugzilla bug #2.)
3674 PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
3675 the result incorrectly in the debug output. (It correctly added a newline
3676 to what was transported.)
3678 TF/01 Added $received_time.
3680 PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
3681 commented out examples of how to interface to a virus scanner and to
3682 SpamAssassin. Also added commented examples of av_scanner and
3683 spamd_address settings.
3685 PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
3686 and controls are allowed in which ACLs. There were a couple of minor
3687 errors. Some of the entries in the conditions table (which is a table of
3688 where they are NOT allowed) were getting very unwieldy; rewrote them as a
3689 negation of where the condition IS allowed.
3691 PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
3693 PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
3694 header file does not have a version number, so I've had to invent a new
3695 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
3696 API. The code is untested by me (my Linux distribution still has 0.3.2 of
3697 radiusclient), but it was contributed by a Radius user.
3699 PH/18 Installed Lars Mainka's patch for the support of CRL collections in
3700 files or directories, for OpenSSL.
3702 PH/19 When an Exim process that is running as root has to create an Exim log
3703 file, it does so in a subprocess that runs as exim:exim so as to get the
3704 ownership right at creation (otherwise, other Exim processes might see
3705 the file with the wrong ownership). There was no test for failure of this
3706 fork() call, which would lead to the process getting stuck as it waited
3707 for a non-existent subprocess. Forks do occasionally fail when resources
3708 run out. I reviewed all the other calls to fork(); they all seem to check
3711 PH/20 When checking for unexpected SMTP input at connect time (before writing
3712 the banner), Exim was not dealing correctly with a non-positive return
3713 from the read() function. If the client had disconnected by this time,
3714 the result was a log entry for a synchronization error with an empty
3715 string after "input=" when read() returned zero. If read() returned -1
3716 (an event I could not check), uninitialized data bytes were printed.
3717 There were reports of junk text (parts of files, etc) appearing after
3720 PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
3722 PH/22 Added support for macro redefinition, and (re)definition in between
3723 driver and ACL definitions.
3725 PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
3726 forgetting to use the resulting value; it was using the unexpanded value.
3728 PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
3729 hadn't been configured. The fix is from Juergen Kreileder, who
3730 understands it better than I do:
3732 "Here's what I see happening with three configured cyrus_sasl
3733 authenticators configured (plain, login, cram-md5):
3735 On startup auth_cyrus_sasl_init() gets called for each of these.
3736 This means three calls to sasl_listmech() without a specified mech_list.
3737 => SASL tests which mechs of all available mechs actually work
3738 => three warnings about OTP not working
3739 => the returned list contains: plain, login, cram-md5, digest-md5, ...
3741 With the patch, sasl_listmech() also gets called three times. But now
3742 SASL's mech_list option is set to the server_mech specified in the the
3743 authenticator. Or in other words, the answer from sasl_listmech()
3744 gets limited to just the mech you're testing for (which is different
3746 => the return list contains just 'plain' or 'login', 'cram-md5' or
3747 nothing depending on the value of ob->server_mech.
3749 I've just tested the patch: Authentication still works fine,
3750 unavailable mechs specified in the exim configuration are still
3751 caught, and the auth.log warnings about OTP are gone."
3753 PH/25 When debugging is enabled, the contents of the command line are added
3754 to the debugging output, even when log_selector=+arguments is not
3757 PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
3758 answer is "GNU", and only if the return is "GNU/something" is the answer
3761 PH/27 $acl_verify_message is now set immediately after the failure of a
3762 verification in an ACL, and so is available in subsequent modifiers. In
3763 particular, the message can be preserved by coding like this:
3765 warn !verify = sender
3766 set acl_m0 = $acl_verify_message
3768 Previously, $acl_verify_message was set only while expanding "message"
3769 and "log_message" when a very denied access.
3771 PH/28 Modified OS/os.c-Linux with
3773 -#ifndef OS_LOAD_AVERAGE
3774 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
3776 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
3777 nomenclature these days.)
3779 PH/29 Installed patch from the Sieve maintainer that adds the options
3780 sieve_useraddress and sieve_subaddress to the redirect router.
3782 PH/30 In these circumstances:
3783 . Two addresses routed to the same list of hosts;
3784 . First host does not offer TLS;
3785 . First host accepts first address;
3786 . First host gives temporary error to second address;
3787 . Second host offers TLS and a TLS session is established;
3788 . Second host accepts second address.
3789 Exim incorrectly logged both deliveries with the TLS parameters (cipher
3790 and peerdn, if requested) that were in fact used only for the second
3793 PH/31 When doing a callout as part of verifying an address, Exim was not paying
3794 attention to any local part prefix or suffix that was matched by the
3795 router that accepted the address. It now behaves in the same way as it
3796 does for delivery: the affixes are removed from the local part unless
3797 rcpt_include_affixes is set on the transport.
3799 PH/32 Add the sender address, as F=<...>, to the log line when logging a
3800 timeout during the DATA phase of an incoming message.
3802 PH/33 Sieve envelope tests were broken for match types other than :is. I have
3803 applied a patch sanctioned by the Sieve maintainer.
3805 PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
3806 the uid or gid is negative. A case of a negative gid caused this to be
3807 noticed. The fix allows for either to be negative.
3809 PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
3810 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
3813 PH/36 The change PH/12 above was broken. Fixed it.
3815 PH/37 Exim used to check for duplicate addresses in the middle of routing, on
3816 the grounds that routing the same address twice would always produce the
3817 same answer. This might have been true once, but it is certainly no
3818 longer true now. Routing a child address may depend on the previous
3819 routing that produced that child. Some complicated redirection strategies
3820 went wrong when messages had multiple recipients, and made Exim's
3821 behaviour dependent on the order in which the addresses were given.
3823 I have moved the duplicate checking until after the routing is complete.
3824 Exim scans the addresses that are assigned to local and remote
3825 transports, and removes any duplicates. This means that more work will be
3826 done, as duplicates will always all be routed, but duplicates are
3827 presumably rare, so I don't expect this is of any significance.
3829 For deliveries to pipes, files, and autoreplies, the duplicate checking
3830 still happens during the routing process, since they are not going to be
3833 PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
3834 It corrects a timeout issue with spamd. This is Ian's comment: "The
3835 background is that sometimes spamd either never reads data from a
3836 connection it has accepted, or it never writes response data. The exiscan
3837 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
3838 blindly assumes that writes won't block so it may never time out."
3840 PH/39 Allow G after quota size as well as K and M.
3842 PH/40 The value set for $authenticated_id in an authenticator may not contain
3843 binary zeroes or newlines because the value is written to log lines and
3844 to spool files. There was no check on this. Now the value is run through
3845 the string_printing() function so that such characters are converted to
3846 printable escape sequences.
3848 PH/41 $message_linecount is a new variable that contains the total number of
3849 lines in the message. Compare $body_linecount, which is the count for the
3852 PH/42 Exim no longer gives details of delivery errors for specific addresses in
3853 bounce and delay warning messages, except in certain special cases, which
3856 (a) An SMTP error message from a remote host;
3857 (b) A message specified in a :fail: redirection;
3858 (c) A message specified in a "fail" command in a system filter;
3859 (d) A message specified in a FAIL return from the queryprogram router;
3860 (e) A message specified by the cannot_route_message router option.
3862 In these cases only, Exim does include the error details in bounce and
3863 warning messages. There are also a few cases where bland messages such
3864 as "unrouteable address" or "local delivery error" are given.
3866 PH/43 $value is now also set for the "else" part of a ${run expansion.
3868 PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
3869 being worked on, but at least Exim now implements the latest version to
3872 PH/45 In a pipe transport, although a timeout while waiting for the pipe
3873 process to complete was treated as a delivery failure, a timeout while
3874 writing the message to the pipe was logged, but erroneously treated as a
3875 successful delivery. Such timeouts include transport filter timeouts. For
3876 consistency with the overall process timeout, these timeouts are now
3877 treated as errors, giving rise to delivery failures by default. However,
3878 there is now a new Boolean option for the pipe transport called
3879 timeout_defer, which, if set TRUE, converts the failures into defers for
3880 both kinds of timeout. A transport filter timeout is now identified in
3883 PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
3884 systems where "make" and "gmake" are different, calling "gmake" at top
3885 level broke things. I've arranged for the value of $(MAKE) to be passed
3886 from the Makefile to this script so that it can call the same version of
3890 A note about Exim versions 4.44 and 4.50
3891 ----------------------------------------
3893 Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
3894 changes of various kinds. As a consequence, a big documentation update was
3895 needed. This delayed the release for rather longer than seemed good, especially
3896 in the light of a couple of (minor) security issues. Therefore, the changes
3897 that fixed bugs were backported into 4.43, to create a 4.44 maintenance
3898 release. So 4.44 and 4.50 are in effect two different branches that both start
3901 I have left the 4.50 change log unchanged; it contains all the changes since
3902 4.43. The change log for 4.44 is below; many of its items are identical to
3903 those for 4.50. This seems to be the most sensible way to preserve the
3904 historical information.
3910 1. Minor wording change to the doc/README.SIEVE file.
3912 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
3913 computation of the current number of files was incorrect.
3915 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
3916 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
3919 4. Give more explanation in the error message when the command for a transport
3920 filter fails to execute.
3922 5. There are several places where Exim runs a non-Exim command in a
3923 subprocess. The SIGUSR1 signal should be disabled for these processes. This
3924 was being done only for the command run by the queryprogram router. It is
3925 now done for all such subprocesses. The other cases are: ${run, transport
3926 filters, and the commands run by the lmtp and pipe transports.
3928 6. Added CONFIGURE_GROUP build-time option.
3930 7. Some older OS have a limit of 256 on the maximum number of file
3931 descriptors. Exim was using setrlimit() to set 1000 as a large value
3932 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
3933 systems. I've change it so that if it can't get 1000, it tries for 256.
3935 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
3936 was an oversight, and furthermore, ever since the addition of extra
3937 controls (e.g. 4.43/32), the checks on when to allow different forms of
3938 "control" were broken. There should now be diagnostics for all cases when a
3939 control that does not make sense is encountered.
3941 9. Added the /retain_sender option to "control=submission".
3943 10. $recipients is now available in the predata ACL (oversight).
3945 11. Tidy the search cache before the fork to do a delivery from a message
3946 received from the command line. Otherwise the child will trigger a lookup
3947 failure and thereby defer the delivery if it tries to use (for example) a
3948 cached ldap connection that the parent has called unbind on.
3950 12. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
3951 of $address_data from the recipient verification was clobbered by the
3952 sender verification.
3954 13. The value of address_data from a sender verification is now available in
3955 $sender_address_data in subsequent conditions in the ACL statement.
3957 14. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
3959 15. Added a new option "connect=<time>" to callout options, to set a different
3962 16. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
3963 was its contents. (It was OK if the option was not defined at all.)
3965 17. A "Completed" log line is now written for messages that are removed from
3966 the spool by the -Mrm option.
3968 18. New variables $sender_verify_failure and $recipient_verify_failure contain
3969 information about exactly what failed.
3971 19. Added -dd to debug only the daemon process.
3973 20. Incorporated Michael Haardt's patch to ldap.c for improving the way it
3974 handles timeouts, both on the server side and network timeouts. Renamed the
3975 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
3977 21. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
3978 It is now set to "smtps".
3980 22. $host_address is now set to the target address during the checking of
3981 ignore_target_hosts.
3983 23. When checking ignore_target_hosts for an ipliteral router, no host name was
3984 being passed; this would have caused $sender_host_name to have been used if
3985 matching the list had actually called for a host name (not very likely,
3986 since this list is usually IP addresses). A host name is now passed as
3989 24. Changed the calls that set up the SIGCHLD handler in the daemon to use the
3990 code that specifies a non-restarting handler (typically sigaction() in
3991 modern systems) in an attempt to fix a rare and obscure crash bug.
3993 25. Narrowed the window for a race in the daemon that could cause it to ignore
3994 SIGCHLD signals. This is not a major problem, because they are used only to
3995 wake it up if nothing else does.
3997 26. A malformed maildirsize file could cause Exim to calculate negative values
3998 for the mailbox size or file count. Odd effects could occur as a result.
3999 The maildirsize information is now recalculated if the size or filecount
4002 27. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
4003 support for a long time. Removed HAVE_SYS_VFS_H.
4005 28. Installed the latest version of exipick from John Jetmore.
4007 29. In an address list, if the pattern was not a regular expression, an empty
4008 subject address (from a bounce message) matched only if the pattern was an
4009 empty string. Non-empty patterns were not even tested. This was the wrong
4010 because it is perfectly reasonable to use an empty address as part of a
4011 database query. An empty address is now tested by patterns that are
4012 lookups. However, all the other forms of pattern expect the subject to
4013 contain a local part and a domain, and therefore, for them, an empty
4014 address still always fails if the pattern is not itself empty.
4016 30. Exim went into a mad DNS loop when attempting to do a callout where the
4017 host was specified on an smtp transport, and looking it up yielded more
4018 than one IP address.
4020 31. Re-factored the code for checking spool and log partition space into a
4021 function that finds that data and another that does the check. The former
4022 is then used to implement four new variables: $spool_space, $log_space,
4023 $spool_inodes, and $log_inodes.
4025 32. The RFC2047 encoding function was originally intended for short strings
4026 such as real names; it was not keeping to the 75-character limit for
4027 encoded words that the RFC imposes. It now respects the limit, and
4028 generates multiple encoded words if necessary. To be on the safe side, I
4029 have increased the buffer size for the ${rfc2047: expansion operator from
4032 33. It is now permitted to omit both strings after an "if" condition; if the
4033 condition is true, the result is "true". As before, when the second string
4034 is omitted, a false condition yields an empty string. This makes it less
4035 cumbersome to write custom ACL and router conditions.
4037 34. Failure to deliver a bounce message always caused it to be frozen, even if
4038 there was an errors_to setting on the router. The errors_to setting is now
4041 35. If an IPv6 address is given for -bh or -bhc, it is now converted to the
4042 canonical form (fully expanded) before being placed in
4043 $sender_host_address.
4045 36. The table in the code that translates DNS record types into text (T_A to
4046 "A" for instance) was missing entries for NS and CNAME. It is just possible
4047 that this could have caused confusion if both these types were looked up
4048 for the same domain, because the text type is used as part of Exim's
4049 per-process caching. But the chance of anyone hitting this buglet seems
4052 37. The dnsdb lookup has been extended in a number of ways.
4054 (1) There is a new type, "zns", which walks up the domain tree until it
4055 finds some nameserver records. It should be used with care.
4057 (2) There is a new type, "mxh", which is like "mx" except that it returns
4058 just the host names, not the priorities.
4060 (3) It is now possible to give a list of domains (or IP addresses) to be
4061 looked up. The behaviour when one of the lookups defers can be
4062 controlled by a keyword.
4064 (4) It is now possible to specify the separator character for use when
4065 multiple records are returned.
4067 38. The dnslists ACL condition has been extended: it is now possible to supply
4068 a list of IP addresses and/or domains to be looked up in a particular DNS
4071 39. Added log_selector=+queue_time_overall.
4073 40. When running the queue in the test harness, wait just a tad after forking a
4074 delivery process, to get repeatability of debugging output.
4076 41. Include certificate and key file names in error message when GnuTLS fails
4077 to set them up, because the GnuTLS error message doesn't include the name
4078 of the failing file when there is a problem reading it.
4080 42. Allow both -bf and -bF in the same test run.
4082 43. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
4084 44. The "Exiscan patch" is now merged into the mainline Exim source.
4086 45. Sometimes the final signoff response after QUIT could fail to get
4087 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
4088 < 0 before doing a fflush(). This bug looks as though it goes back to the
4089 introduction of TLS in release 3.20, but "sometimes" must have been rare
4090 because the tests only now provoked it.
4092 46. Reset the locale to "C" after calling embedded Perl, in case it was changed
4093 (this can affect the format of dates).
4095 47. exim_tidydb, when checking for the continued existence of a message for
4096 which it has found a message-specific retry record, was not finding
4097 messages that were in split spool directories. Consequently, it was
4098 deleting retry records that should have stayed in existence.
4100 48. Steve fixed some bugs in eximstats.
4102 49. The SPA authentication driver was not abandoning authentication and moving
4103 on to the next authenticator when an expansion was forced to fail,
4104 contradicting the general specification for all authenticators. Instead it
4105 was generating a temporary error. It now behaves as specified.
4107 50. The default ordering of permitted cipher suites for GnuTLS was pessimal
4108 (the order specifies the preference for clients). The order is now AES256,
4109 AES128, 3DES, ARCFOUR128.
4111 51. Small patch to Sieve code - explicitly set From: when generating an
4114 52. Exim crashed if a remote delivery caused a very long error message to be
4115 recorded - for instance if somebody sent an entire SpamAssassin report back
4116 as a large number of 550 error lines. This bug was coincidentally fixed by
4117 increasing the size of one of Exim's internal buffers (big_buffer) that
4118 happened as part of the Exiscan merge. However, to be on the safe side, I
4119 have made the code more robust (and fixed the comments that describe what
4122 53. Now that there can be additional text after "Completed" in log lines (if
4123 the queue_time_overall log selector is set), a one-byte patch to exigrep
4124 was needed to allow it to recognize "Completed" as not the last thing in
4127 54. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
4128 patch that reportedly fixes this has been added. I am not expert enough to
4129 create a test for it. This is what the patch creator wrote:
4131 "I found a little strange behaviour of ldap code when working with
4132 Windows 2003 AD Domain, where users was placed in more than one
4133 Organization Units. When I tried to give exim partial DN, the exit code
4134 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
4135 But simultaneously result of request was absolutely normal ldap result,
4136 so I produce this patch..."
4138 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
4139 REFERENCE, so I have modified the code to exclude the patch when that macro
4142 55. Some experimental protocols are using DNS PTR records for new purposes. The
4143 keys for these records are domain names, not reversed IP addresses. The
4144 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
4145 leaves it alone. Component reversal etc. now happens only for IP addresses.
4148 56. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
4150 57. Double the size of the debug message buffer (to 2048) so that more of very
4151 long debug lines gets shown.
4153 58. The exicyclog utility now does better if the number of log files to keep
4154 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
4156 59. Two changes related to the smtp_active_hostname option:
4158 (1) $smtp_active_hostname is now available as a variable.
4159 (2) The default for smtp_banner uses $smtp_active_hostname instead
4160 of $primary_hostname.
4162 60. The host_aton() function is supposed to be passed a string that is known
4163 to be a valid IP address. However, in the case of IPv6 addresses, it was
4164 not checking this. This is a hostage to fortune. Exim now panics and dies
4165 if the condition is not met. A case was found where this could be provoked
4166 from a dnsdb PTR lookup with an IPv6 address that had more than 8
4167 components; fortuitously, this particular loophole had already been fixed
4168 by change 4.50/55 above.
4170 If there are any other similar loopholes, the new check in host_aton()
4171 itself should stop them being exploited. The report I received stated that
4172 data on the command line could provoke the exploit when Exim was running as
4173 exim, but did not say which command line option was involved. All I could
4174 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
4175 running as the user.
4178 61. There was a buffer overflow vulnerability in the SPA authentication code
4179 (which came originally from the Samba project). I have added a test to the
4180 spa_base64_to_bits() function which I hope fixes it.
4183 62. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
4184 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
4186 63. The daemon start-up calls getloadavg() while still root for those OS that
4187 need the first call to be done as root, but it missed one case: when
4188 deliver_queue_load_max is set with deliver_drop_privilege. This is
4189 necessary for the benefit of the queue runner, because there is no re-exec
4190 when deliver_drop_privilege is set.
4192 64. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
4193 This has been fixed.
4195 65. Caching of lookup data for "hosts =" ACL conditions, when a named host list
4196 was in use, was not putting the data itself into the right store pool;
4197 consequently, it could be overwritten for a subsequent message in the same
4198 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
4201 66. Added hosts_max_try_hardlimit to the smtp transport, default 50.
4203 67. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
4204 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
4205 the function were treating the return as a boolean value, which happened to
4206 work because 0=false and not-0=true, but is not correct code.
4208 68. The host_aton() function was not handling scoped IPv6 addresses (those
4209 with, for example, "%eth0" on the end) correctly.
4211 69. Fixed some compiler warnings in acl.c for the bitmaps specified with
4212 negated items (that is, ~something) in unsigned ints. Some compilers
4213 apparently mutter when there is no cast.
4215 70. If an address verification called from an ACL failed, and did not produce a
4216 user-specific message (i.e. there was only a "system" message), nothing was
4217 put in $acl_verify_message. In this situation, it now puts the system
4220 71. Change 4.23/11 added synchronization checking at the start of an SMTP
4221 session; change 4.31/43 added the unwanted input to the log line - except
4222 that it did not do this in the start of session case. It now does.
4224 72. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
4225 This is wrong and can cause the other end to generate a synchronization
4226 error if it is another Exim or anything else that does the synchronization
4227 check. A QUIT command is no longer sent after a timeout.
4229 73. $host_lookup_deferred has been added, to make it easier to detect DEFERs
4230 during host lookups.
4232 74. The defer_ok option of callout verification was not working if it was used
4233 when verifying addresses in header lines, that is, for this case:
4235 verify = header_sender/callout=defer_ok
4237 75. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
4238 those file descriptors could be used for SMTP connections. If anything
4239 wrote to stderr (the example that came up was "warn" in embedded Perl), it
4240 could be sent to the SMTP client, causing chaos. The daemon now opens
4241 stdin, stdout, and stderr to /dev/null when it puts itself into the
4244 76. Arrange for output from Perl's "warn" command to be written to Exim's main
4245 log by default. The user can override this with suitable Perl magic.
4247 77. The use of log_message on a "discard" ACL verb, which is supposed to add to
4248 the log message when discard triggers, was not working for the DATA ACL or
4249 for the non-SMTP ACL.
4251 78. Error message wording change in sieve.c.
4253 79. If smtp_accept_max_per_host was set, the number of connections could be
4254 restricted to fewer than expected, because the daemon was trying to set up
4255 a new connection before checking whether the processes handling previous
4256 connections had finished. The check for completed processes is now done
4257 earlier. On busy systems, this bug wouldn't be noticed because something
4258 else would have woken the daemon, and it would have reaped the completed
4261 80. If a message was submitted locally by a user whose login name contained one
4262 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
4263 It caused a spool format error. I have fixed the spool reading code. A
4264 related problem was that the "from" clause in the Received: line became
4265 illegal because of the space(s). It is now covered by ${quote_local_part.
4267 81. Included the latest eximstats from Steve (adds average sizes to HTML Top
4270 82. Updated OS/Makefile-AIX as per message from Mike Meredith.
4272 83. Patch from Sieve maintainer to fix unterminated string problem in
4273 "vacation" handling.
4275 84. Some minor changes to the Linux configuration files to help with other
4276 OS variants using glibc.
4278 85. One more patch for Sieve to update vacation handling to latest spec.
4281 ----------------------------------------------------
4282 See the note above about the 4.44 and 4.50 releases.
4283 ----------------------------------------------------
4289 1. Change 4.43/35 introduced a bug that caused file counts to be
4290 incorrectly computed when quota_filecount was set in an appendfile
4293 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
4294 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
4297 3. Give more explanation in the error message when the command for a transport
4298 filter fails to execute.
4300 4. There are several places where Exim runs a non-Exim command in a
4301 subprocess. The SIGUSR1 signal should be disabled for these processes. This
4302 was being done only for the command run by the queryprogram router. It is
4303 now done for all such subprocesses. The other cases are: ${run, transport
4304 filters, and the commands run by the lmtp and pipe transports.
4306 5. Some older OS have a limit of 256 on the maximum number of file
4307 descriptors. Exim was using setrlimit() to set 1000 as a large value
4308 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
4309 systems. I've change it so that if it can't get 1000, it tries for 256.
4311 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
4312 was an oversight, and furthermore, ever since the addition of extra
4313 controls (e.g. 4.43/32), the checks on when to allow different forms of
4314 "control" were broken. There should now be diagnostics for all cases when a
4315 control that does not make sense is encountered.
4317 7. $recipients is now available in the predata ACL (oversight).
4319 8. Tidy the search cache before the fork to do a delivery from a message
4320 received from the command line. Otherwise the child will trigger a lookup
4321 failure and thereby defer the delivery if it tries to use (for example) a
4322 cached ldap connection that the parent has called unbind on.
4324 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
4325 of $address_data from the recipient verification was clobbered by the
4326 sender verification.
4328 10. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
4329 was its contents. (It was OK if the option was not defined at all.)
4331 11. A "Completed" log line is now written for messages that are removed from
4332 the spool by the -Mrm option.
4334 12. $host_address is now set to the target address during the checking of
4335 ignore_target_hosts.
4337 13. When checking ignore_target_hosts for an ipliteral router, no host name was
4338 being passed; this would have caused $sender_host_name to have been used if
4339 matching the list had actually called for a host name (not very likely,
4340 since this list is usually IP addresses). A host name is now passed as
4343 14. Changed the calls that set up the SIGCHLD handler in the daemon to use the
4344 code that specifies a non-restarting handler (typically sigaction() in
4345 modern systems) in an attempt to fix a rare and obscure crash bug.
4347 15. Narrowed the window for a race in the daemon that could cause it to ignore
4348 SIGCHLD signals. This is not a major problem, because they are used only to
4349 wake it up if nothing else does.
4351 16. A malformed maildirsize file could cause Exim to calculate negative values
4352 for the mailbox size or file count. Odd effects could occur as a result.
4353 The maildirsize information is now recalculated if the size or filecount
4356 17. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
4357 support for a long time. Removed HAVE_SYS_VFS_H.
4359 18. Updated exipick to current release from John Jetmore.
4361 19. Allow an empty sender to be matched against a lookup in an address list.
4362 Previously the only cases considered were a regular expression, or an
4365 20. Exim went into a mad DNS lookup loop when doing a callout where the
4366 host was specified on the transport, if the DNS lookup yielded more than
4369 21. The RFC2047 encoding function was originally intended for short strings
4370 such as real names; it was not keeping to the 75-character limit for
4371 encoded words that the RFC imposes. It now respects the limit, and
4372 generates multiple encoded words if necessary. To be on the safe side, I
4373 have increased the buffer size for the ${rfc2047: expansion operator from
4376 22. Failure to deliver a bounce message always caused it to be frozen, even if
4377 there was an errors_to setting on the router. The errors_to setting is now
4380 23. If an IPv6 address is given for -bh or -bhc, it is now converted to the
4381 canonical form (fully expanded) before being placed in
4382 $sender_host_address.
4384 24. Updated eximstats to version 1.33
4386 25. Include certificate and key file names in error message when GnuTLS fails
4387 to set them up, because the GnuTLS error message doesn't include the name
4388 of the failing file when there is a problem reading it.
4390 26. Expand error message when OpenSSL has problems setting up cert/key files.
4393 27. Reset the locale to "C" after calling embedded Perl, in case it was changed
4394 (this can affect the format of dates).
4396 28. exim_tidydb, when checking for the continued existence of a message for
4397 which it has found a message-specific retry record, was not finding
4398 messages that were in split spool directories. Consequently, it was
4399 deleting retry records that should have stayed in existence.
4401 29. eximstats updated to version 1.35
4402 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
4403 1.35 - bugfix such that pie charts by volume are generated correctly
4405 30. The SPA authentication driver was not abandoning authentication and moving
4406 on to the next authenticator when an expansion was forced to fail,
4407 contradicting the general specification for all authenticators. Instead it
4408 was generating a temporary error. It now behaves as specified.
4410 31. The default ordering of permitted cipher suites for GnuTLS was pessimal
4411 (the order specifies the preference for clients). The order is now AES256,
4412 AES128, 3DES, ARCFOUR128.
4414 31. Small patch to Sieve code - explicitly set From: when generating an
4417 32. Exim crashed if a remote delivery caused a very long error message to be
4418 recorded - for instance if somebody sent an entire SpamAssassin report back
4419 as a large number of 550 error lines. This bug was coincidentally fixed by
4420 increasing the size of one of Exim's internal buffers (big_buffer) that
4421 happened as part of the Exiscan merge. However, to be on the safe side, I
4422 have made the code more robust (and fixed the comments that describe what
4425 33. Some experimental protocols are using DNS PTR records for new purposes. The
4426 keys for these records are domain names, not reversed IP addresses. The
4427 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
4428 leaves it alone. Component reversal etc. now happens only for IP addresses.
4431 34. The host_aton() function is supposed to be passed a string that is known
4432 to be a valid IP address. However, in the case of IPv6 addresses, it was
4433 not checking this. This is a hostage to fortune. Exim now panics and dies
4434 if the condition is not met. A case was found where this could be provoked
4435 from a dnsdb PTR lookup with an IPv6 address that had more than 8
4436 components; fortuitously, this particular loophole had already been fixed
4437 by change 4.50/55 or 4.44/33 above.
4439 If there are any other similar loopholes, the new check in host_aton()
4440 itself should stop them being exploited. The report I received stated that
4441 data on the command line could provoke the exploit when Exim was running as
4442 exim, but did not say which command line option was involved. All I could
4443 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
4444 running as the user.
4447 35. There was a buffer overflow vulnerability in the SPA authentication code
4448 (which came originally from the Samba project). I have added a test to the
4449 spa_base64_to_bits() function which I hope fixes it.
4452 36. The daemon start-up calls getloadavg() while still root for those OS that
4453 need the first call to be done as root, but it missed one case: when
4454 deliver_queue_load_max is set with deliver_drop_privilege. This is
4455 necessary for the benefit of the queue runner, because there is no re-exec
4456 when deliver_drop_privilege is set.
4458 37. Caching of lookup data for "hosts =" ACL conditions, when a named host list
4459 was in use, was not putting the data itself into the right store pool;
4460 consequently, it could be overwritten for a subsequent message in the same
4461 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
4464 38. Sometimes the final signoff response after QUIT could fail to get
4465 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
4466 < 0 before doing a fflush(). This bug looks as though it goes back to the
4467 introduction of TLS in release 3.20, but "sometimes" must have been rare
4468 because the tests only now provoked it.
4474 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
4475 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
4476 Now it returns an integer. A number of calls were still expecting a T/F
4477 return. Fortuitously, in all cases, the tests worked in OK situations,
4478 which is the norm. However, things would have gone wrong on any write
4479 failures on the smtp file descriptor. This function is used when sending
4480 messages over SMTP and also when doing verify callouts.
4482 2. When Exim is called to do synchronous delivery of a locally submitted
4483 message (the -odf or -odi options), it no longer closes stderr before doing
4486 3. Implemented the mua_wrapper option.
4488 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
4490 5. Implemented the functions header_remove(), header_testname(),
4491 header_add_at_position(), and receive_remove_recipient(), and exported them
4494 6. If an ACL "warn" statement specified the addition of headers, Exim already
4495 inserted X-ACL-Warn: at the start if there was no header name. However, it
4496 was not making this test for the second and subsequent header lines if
4497 there were newlines in the string. This meant that an invalid header could
4498 be inserted if Exim was badly configured.
4500 7. Allow an ACL "warn" statement to add header lines at the start or after all
4501 the Received: headers, as well as at the end.
4503 8. Added the rcpt_4xx retry error code.
4505 9. Added postmaster_mailfrom=xxx to callout verification option.
4507 10. Added mailfrom=xxxx to the callout verification option, for verify=
4510 11. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
4511 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
4513 12. Inserted some casts to stop certain compilers warning when using pointer
4514 differences as field lengths or precisions in printf-type calls (mostly
4515 affecting debugging statements).
4517 13. Added optional readline() support for -be (dynamically loaded).
4519 14. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
4520 same clock tick as a message's arrival, so that its received time was the
4521 same as the "first fail" time on the retry record, and that message
4522 remained on the queue past the ultimate address timeout, every queue runner
4523 would try a delivery (because it was past the ultimate address timeout) but
4524 after another failure, the ultimate address timeout, which should have then
4525 bounced the address, did not kick in. This was a "< instead of <=" error;
4526 in most cases the first failure would have been in the next clock tick
4527 after the received time, and all would be well.
4529 15. The special items beginning with @ in domain lists (e.g. @mx_any) were not
4530 being recognized when the domain list was tested by the match_domain
4531 condition in an expansion string.
4533 16. Added the ${str2b64: operator.
4535 17. Exim was always calling setrlimit() to set a large limit for the number of
4536 processes, without checking whether the existing limit was already
4537 adequate. (It did check for the limit on file descriptors.) Furthermore,
4538 errors from getrlimit() and setrlimit() were being ignored. Now they are
4539 logged to the main and panic logs, but Exim does carry on, to try to do its
4540 job under whatever limits there are.
4542 18. Imported PCRE 5.0.
4544 19. Trivial typo in log message " temporarily refused connection" (the leading
4547 20. If the log selector return_path_on_delivery was set and an address was
4548 redirected to /dev/null, the delivery process crashed because it assumed
4549 that a return path would always be set for a "successful" delivery. In this
4550 case, the whole delivery is bypassed as an optimization, and therefore no
4553 21. Internal re-arrangement: the function for sending a challenge and reading
4554 a response while authentication was assuming a zero-terminated challenge
4555 string. It's now changed to take a pointer and a length, to allow for
4556 binary data in such strings.
4558 22. Added the cyrus_sasl authenticator (code supplied by MBM).
4560 23. Exim was not respecting finduser_retries when seeking the login of the
4561 uid under which it was called; it was always trying 10 times. (The default
4562 setting of finduser_retries is zero.) Also, it was sleeping after the final
4563 failure, which is pointless.
4565 24. Implemented tls_on_connect_ports.
4567 25. Implemented acl_smtp_predata.
4569 26. If the domain in control=submission is set empty, Exim assumes that the
4570 authenticated id is a complete email address when it generates From: or
4571 Sender: header lines.
4573 27. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
4574 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
4575 chown and chgrp in /bin and hostname in /usr/bin.
4577 28. Exim was keeping the "process log" file open after each use, just as it
4578 does for the main log. This opens the possibility of it remaining open for
4579 long periods when the USR1 signal hits a daemon. Occasional processlog
4580 errors were reported, that could have been caused by this. Anyway, it seems
4581 much more sensible not to leave this file open at all, so that is what now
4584 29. The long-running daemon process does not normally write to the log once it
4585 has entered its main loop, and it closes the log before doing so. This is
4586 so that log files can straightforwardly be renamed and moved. However,
4587 there are a couple of unusual error situations where the daemon does write
4588 log entries, and I had neglected to close the log afterwards.
4590 30. The text of an SMTP error response that was received during a remote
4591 delivery was being truncated at 512 bytes. This is too short for some of
4592 the long messages that one sometimes sees. I've increased the limit to
4595 31. It is now possible to make retry rules that apply only when a message has a
4596 specific sender, in particular, an empty sender.
4598 32. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
4599 it possible to be selective about when SMTP synchronization is enforced.
4601 33. Added "control = caseful_local_part" and "control = "caselower_local_part".
4603 32. Implemented hosts_connection_nolog.
4605 33. Added an ACL for QUIT.
4607 34. Setting "delay_warning=" to disable warnings was not working; it gave a
4610 35. Added mailbox_size and mailbox_filecount to appendfile.
4612 36. Added control = no_multiline_responses to ACLs.
4614 37. There was a bug in the logic of the code that waits for the clock to tick
4615 in the case where the clock went backwards by a substantial amount such
4616 that the microsecond fraction of "now" was more than the microsecond
4617 fraction of "then" (but the whole seconds number was less).
4619 38. Added support for the libradius Radius client library this is found on
4620 FreeBSD (previously only the radiusclient library was supported).
4626 1. When certain lookups returned multiple values in the form name=value, the
4627 quoting of the values was not always being done properly. Specifically:
4628 (a) If the value started with a double quote, but contained no whitespace,
4630 (b) If the value contained whitespace other than a space character (i.e.
4631 tabs or newlines or carriage returns) it was not quoted.
4632 This fix has been applied to the mysql and pgsql lookups by writing a
4633 separate quoting function and calling it from the lookup code. The fix
4634 should probably also be applied to nisplus, ibase and oracle lookups, but
4635 since I cannot test any of those, I have not disturbed their existing code.
4637 2. A hit in the callout cache for a specific address caused a log line with no
4638 reason for rejecting RCPT. Now it says "Previous (cached) callout
4639 verification failure".
4641 3. There was an off-by-one bug in the queryprogram router. An over-long
4642 return line was truncated at 256 instead of 255 characters, thereby
4643 overflowing its buffer with the terminating zero. As well as fixing this, I
4644 have increased the buffer size to 1024 (and made a note to document this).
4646 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
4647 when Exim is waiting for an SMTP response from a remote server, Exim
4648 restarts its select() call on the socket, thereby resetting its timeout.
4649 This is not a problem when such interrupts are rare. Somebody set up a cron
4650 job to run exiwhat every 2 minutes, which is less than the normal select()
4651 timeout (5 or 10 minutes). This meant that the select() timeout never
4652 kicked in because it was always reset. I have fixed this by comparing the
4653 time when an interrupt arrives with the time at the start of the first call
4654 to select(). If more time than the timeout has elapsed, the interrupt is
4655 treated as a timeout.
4657 5. Some internal re-factoring in preparation for the addition of Sieve
4658 extensions (by MH). In particular, the "personal" test is moved to a
4659 separate function, and given an option for scanning Cc: and Bcc: (which is
4660 not set for Exim filters).
4662 6. When Exim created an email address using the login of the caller as the
4663 local part (e.g. when creating a From: or Sender: header line), it was not
4664 quoting the local part when it contained special characters such as @.
4666 7. Installed new OpenBSD configuration files.
4668 8. Reworded some messages for syntax errors in "and" and "or" conditions to
4669 try to make them clearer.
4671 9. Callout options, other than the timeout value, were being ignored when
4672 verifying sender addresses in header lines. For example, when using
4674 verify = header_sender/callout=no_cache
4676 the cache was (incorrectly) being used.
4678 10. Added a missing instance of ${EXE} to the exim_install script; this affects
4679 only the Cygwin environment.
4681 11. When return_path_on_delivery was set as a log selector, if different remote
4682 addresses in the same message used different return paths and parallel
4683 remote delivery occurred, the wrong values would sometimes be logged.
4684 (Whenever a remote delivery process finished, the return path value from
4685 the most recently started remote delivery process was logged.)
4687 12. RFC 3848 specifies standard names for the "with" phrase in Received: header
4688 lines when AUTH and/or TLS are in use. This is the "received protocol"
4689 field. Exim used to use "asmtp" for authenticated SMTP, without any
4690 indication (in the protocol name) for TLS use. Now it follows the RFC and
4691 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
4692 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
4693 names appear in log lines as well as in Received: header lines.
4695 13. Installed MH's patches for Sieve to add the "copy" and "vacation"
4696 extensions, and comparison tests, and to fix some bugs.
4698 14. Changes to the "personal" filter test:
4700 (1) The test was buggy in that it was just doing the equivalent of
4701 "contains" tests on header lines. For example, if a user's address was
4702 anne@some.where, the "personal" test would incorrectly be true for
4704 To: susanne@some.where
4706 This test is now done by extracting each address from the header in turn,
4707 and checking the entire address. Other tests that are part of "personal"
4708 are now done using regular expressions (for example, to check local parts
4709 of addresses in From: header lines).
4711 (2) The list of non-personal local parts in From: addresses has been
4712 extended to include "listserv", "majordomo", "*-request", and "owner-*",
4713 taken from the Sieve specification recommendations.
4715 (3) If the message contains any header line starting with "List-" it is
4716 treated as non-personal.
4718 (4) The test for "circular" in the Subject: header line has been removed
4719 because it now seems ill-conceived.
4721 15. Minor typos in src/EDITME comments corrected.
4723 16. Installed latest exipick from John Jetmore.
4725 17. If headers_add on a router specified a text string that was too long for
4726 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
4727 of string_sprintf() is now avoided.
4729 18. $message_body_size was not set (it was always zero) when running the DATA
4730 ACL and the local_scan() function.
4732 19. For the "mail" command in an Exim filter, no default was being set for
4733 the once_repeat time, causing a random time value to be used if "once" was
4734 specified. (If the value happened to be <= 0, no repeat happened.) The
4735 default is now 0s, meaning "never repeat". The "vacation" command was OK
4736 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
4737 (I found it when inspecting the code).
4739 20. There is now an overall timeout for performing a callout verification. It
4740 defaults to 4 times the callout timeout, which applies to individual SMTP
4741 commands during the callout. The overall timeout applies when there is more
4742 than one host that can be tried. The timeout is checked before trying the
4743 next host. This prevents very long delays if there are a large number of
4744 hosts and all are timing out (e.g. when the network connections are timing
4745 out). The value of the overall timeout can be changed by specifying an
4746 additional sub-option for "callout", called "maxwait". For example:
4748 verify = sender/callout=5s,maxwait=20s
4750 21. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
4751 to the end before writing, but this should make it even safer).
4753 22. Exim was forgetting that it had advertised PIPELINING for the second and
4754 subsequent messages on an SMTP connection. It was also not resetting its
4755 memory on STARTTLS and an internal HELO.
4757 23. When Exim logs an SMTP synchronization error within a session, it now
4758 records whether PIPELINING has been advertised or not.
4760 24. Added 3 instances of "(long int)" casts to time_t variables that were being
4761 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
4762 rather than long int.
4764 25. Installed the latest Cygwin configuration files from the Cygwin maintainer.
4766 26. Added the never_mail option to autoreply.
4772 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
4773 crash if the getsockname() call failed; this can happen if a connection is
4774 closed very soon after it is established. The problem was simply in the
4775 order in which certain operations were done, causing Exim to try to write
4776 to the SMTP stream before it had set up the file descriptor. The bug has
4777 been fixed by making things happen in the correct order.
4783 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
4784 before the connection was closed, thus losing the rejection response.
4786 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
4787 some early Solaris releases, but causes trouble in current releases where
4788 socklen_t is defined.
4790 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
4793 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
4796 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
4797 that releasing the top of it at the end releases what was used for sub-
4798 expansions (unless the block got too big). However, discard this block if
4799 the first thing is a variable or header, so that we can use its block when
4800 it is dynamic (useful for very large $message_headers, for example).
4802 6. Lookups now cache *every* query, not just the most recent. A new, separate
4803 store pool is used for this. It can be recovered when all lookup caches are
4804 flushed. Lookups now release memory at the end of their result strings.
4805 This has involved some general refactoring of the lookup sources.
4807 7. Some code has been added to the store_xxx() functions to reduce the amount
4808 of flapping under certain conditions.
4810 8. log_incoming_interface used to affect only the <= reception log lines. Now
4811 it causes the local interface and port to be added to several more SMTP log
4812 lines, for example "SMTP connection from", and rejection lines.
4814 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
4816 10. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
4818 11. If $host_data was set by virtue of a hosts lookup in an ACL, its value
4819 could be overwritten at the end of the current message (or the start of a
4820 new message if it was set in a HELO ACL). The value is now preserved for
4821 the duration of the SMTP connection.
4823 12. If a transport had a headers_rewrite setting, and a matching header line
4824 contained an unqualified address, that address was qualified, even if it
4825 did not match any rewriting rules. The underlying bug was that the values
4826 of the flags that permit the existence of unqualified sender and recipient
4827 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
4828 non-local messages, and by -bnq for local messages) were not being
4829 preserved with the message after it was received.
4831 13. When Exim was logging an SMTP synchronization error, it could sometimes log
4832 "next input=" as part of the text comprising the host identity instead of
4833 the correct text. The code was using the same buffer for two different
4834 strings. However, depending on which order the printing function evaluated
4835 its arguments, the bug did not always show up. Under Linux, for example, my
4836 test suite worked just fine.
4838 14. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
4839 doesn't work with some older versions of Perl. It has been changed to "my",
4840 which in any case is probably the better facility to use.
4842 15. A really picky compiler found some instances of statements for creating
4843 error messages that either had too many or two few arguments for the format
4846 16. The size of the buffer for calls to the DNS resolver has been increased
4847 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
4848 for addresses that have a lot of PTR records. This alleviates a problem; it
4849 does not fully solve it.
4851 17. A dnsdb lookup for PTR records that receives more data than will fit in the
4852 buffer now truncates the list and logs the incident, which is the same
4853 action as happens when Exim is looking up a host name and its aliases.
4854 Previously in this situation something unpredictable would happen;
4855 sometimes it was "internal error: store_reset failed".
4857 18. If a server dropped the connection unexpectedly when an Exim client was
4858 using GnuTLS and trying to read a response, the client delivery process
4859 crashed while trying to generate an error log message.
4861 19. If a "warn" verb in an ACL added multiple headers to a message in a single
4862 string, for example:
4864 warn message = H1: something\nH2: something
4866 the text was added as a single header line from Exim's point of view
4867 though it ended up OK in the delivered message. However, searching for the
4868 second and subsequent header lines using $h_h2: did not work. This has been
4869 fixed. Similarly, if a system filter added multiple headers in this way,
4870 the routers could not see them.
4872 20. Expanded the error message when iplsearch is called with an invalid key to
4873 suggest using net-iplsearch in a host list.
4875 21. When running tests using -bh, any delays imposed by "delay" modifiers in
4876 ACLs are no longer actually imposed (and a message to that effect is
4879 22. If a "gecos" field in a passwd entry contained escaped characters, in
4880 particular, if it contained a \" sequence, Exim got it wrong when building
4881 a From: or a Sender: header from that name. A second bug also caused
4882 incorrect handling when an unquoted " was present following a character
4883 that needed quoting.
4885 23. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
4886 was not being matched caselessly.
4888 24. Arranged for all hyphens in the exim.8 source to be escaped with
4891 25. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
4892 properly. Recipient callout cache records were still being keyed to include
4893 the sender, even when use_sender was set false. This led to far more
4894 callouts that were necessary. The sender is no longer included in the key
4895 when use_sender is false.
4897 26. Added "control = submission" modifier to ACLs.
4899 27. Added the ${base62d: operator to decode base 62 numbers.
4901 28. dnsdb lookups can now access SRV records.
4903 29. CONFIGURE_OWNER can be set at build time to define an alternative owner for
4904 the configuration file.
4906 30. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
4907 (-v) mode. This makes the output for a verbose queue run more intelligible.
4909 31. Added a use_postmaster feature to recipient callouts.
4911 32. Added the $body_zerocount variable, containing the number of binary zero
4912 bytes in the message body.
4914 33. The time of last modification of the "new" subdirectory is now used as the
4915 "mailbox time last read" when there is a quota error for a maildir
4918 34. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
4920 35. Added +ignore_unknown as a special item in host lists.
4922 36. Code for decoding IPv6 addresses in host lists is now included, even if
4923 IPv6 support is not being compiled. This fixes a bug in which an IPv6
4924 address was recognized as an IP address, but was then not correctly decoded
4925 into binary, causing unexpected and incorrect effects when compared with
4932 1. Very minor rewording of debugging text in manualroute to say "list of
4933 hosts" instead of "hostlist".
4935 2. If verify=header_syntax was set, and a header line with an unqualified
4936 address (no domain) and a large number of spaces between the end of the
4937 name and the colon was received, the reception process suffered a buffer
4938 overflow, and (when I tested it) crashed. This was caused by some obsolete
4939 code that should have been removed. The fix is to remove it!
4941 3. When running in the test harness, delay a bit after writing a bounce
4942 message to get a bit more predictability in the log output.
4944 4. Added a call to search_tidyup() just before forking a reception process. In
4945 theory, someone could use a lookup in the expansion of smtp_accept_max_
4946 per_host which, without the tidyup, could leave open a database connection.
4948 5. Added the variables $recipient_data and $sender_data which get set from a
4949 lookup success in an ACL "recipients" or "senders" condition, or a router
4950 "senders" option, similar to $domain_data and $local_part_data.
4952 6. Moved the writing of debug_print from before to after the "senders" test
4955 7. Change 4.31/66 (moving the time when the Received: is generated) caused
4956 problems for message scanning, either using a data ACL, or using
4957 local_scan() because the Received: header was not generated till after they
4958 were called (in order to set the time as the time of reception completion).
4959 I have revised the way this works. The header is now generated after the
4960 body is received, but before the ACL or local_scan() are called. After they
4961 are run, the timestamp in the header is updated.
4967 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
4968 before starting a queue runner without re-exec. This happened only when
4969 deliver_drop_privilege was set or when the Exim user was set to root. The
4970 effect of the bug was that timeouts during subsequent deliveries caused
4971 crashes instead of being properly handled. The handler is now left at its
4972 default (and expected) setting.
4974 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
4975 message, again when deliver_drop_privilege is set or Exim is run as root.
4976 The bug described in (1) was not present in this case, but the tidying up
4977 of the other signals was missing. I have made the two cases consistent.
4979 3. The ignore_target_hosts setting on a manualroute router was being ignored
4980 for hosts that were looked up using the /MX notation.
4982 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
4985 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
4986 operated on the sender address. After changing the $sender_address to <>
4987 for the sender address verify, Exim was re-instated it as the original
4988 (before rewriting) address, but remembering that it had rewritten it, so it
4989 wasn't rewriting it again. This bug also had the effect of breaking the
4990 sender address verification caching when the sender address was rewritten.
4992 6. The ignore_target_hosts option was being ignored by the ipliteral router.
4993 This has been changed so that if the ip literal address matches
4994 ignore_target_hosts, the router declines.
4996 7. Added expansion conditions match_domain, match_address, and match_local_
4997 part (NOT match_host).
4999 8. The placeholder for the Received: header didn't have a length field set.
5001 9. Added code to Exim itself and to exim_lock to test for a specific race
5002 condition that could lead to file corruption when using MBX delivery. The
5003 issue is with the lockfile that is created in /tmp. If this file is removed
5004 after a process has opened it but before that process has acquired a lock,
5005 there is the potential for a second process to recreate the file and also
5006 acquire a lock. This could lead to two Exim processes writing to the file
5007 at the same time. The added code performs the same test as UW imapd; it
5008 checks after acquiring the lock that its file descriptor still refers to
5009 the same named file.
5011 10. The buffer for building added header lines was of fixed size, 8192 bytes.
5012 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
5015 11. Added the smtp_active_hostname option. If used, this will typically be made
5016 to depend on the incoming interface address. Because $interface_address is
5017 not set up until the daemon has forked a reception process, error responses
5018 that can happen earlier (such as "too many connections") no longer contain
5021 12. If an expansion in a condition on a "warn" statement fails because a lookup
5022 defers, the "warn" statement is abandoned, and the next ACL statement is
5023 processed. Previously this caused the whole ACL to be aborted.
5025 13. Added the iplsearch lookup type.
5027 14. Added ident_timeout as a log selector.
5029 15. Added tls_certificate_verified as a log selector.
5031 16. Added a global option tls_require_ciphers (compare the smtp transport
5032 option of the same name). This controls incoming TLS connections.
5034 17. I finally figured out how to make tls_require_ciphers do a similar thing
5035 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
5036 before starting the TLS session.
5038 18. Tabs are now shown as \t in -bP output.
5040 19. If the log selector return_path_on_delivery was set, Exim crashed when
5041 bouncing a message because it had too many Received: header lines.
5043 20. If two routers both had headers_remove settings, and the first one included
5044 a superfluous trailing colon, the final name in the first list and the
5045 first name in the second list were incorrectly joined into one item (with a
5046 colon in the middle).
5052 1. Added -C and -D options to the exinext utility, mainly to make it easier
5053 to include in the automated testing, but these could be helpful when
5054 multiple configurations are in use.
5056 2. The exinext utility was not formatting the output nicely when there was
5057 an alternate port involved in the retry record key, nor when there was a
5058 message id as well (for retries that were specific to a specific message
5059 and a specific host). It was also confused by IPv6 addresses, because of
5060 the additional colons they contain. I have fixed the IPv4 problem, and
5061 patched it up to do a reasonable job for IPv6.
5063 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
5064 delivery, the log line now contains "pipelined" if PIPELINING was used.
5066 4. An SMTP transport process used to panic and die if the bind() call to set
5067 an explicit outgoing interface failed. This has been changed; it is now
5068 treated in the same way as a connect() failure.
5070 5. A reference to $sender_host_name in the part of a conditional expansion
5071 that was being skipped was still causing a DNS lookup. This no longer
5074 6. The def: expansion condition was not recognizing references to header lines
5075 that used bh_ and bheader_.
5077 7. Added the _cache feature to named lists.
5079 8. The code for checking quota_filecount in the appendfile transport was
5080 allowing one more file than it should have been.
5082 9. For compatibility with Sendmail, the command line option
5090 and sets the incoming protocol and host name (for trusted callers). The
5091 host name and its colon can be omitted when only the protocol is to be set.
5092 Note the Exim already has two private options, -pd and -ps, that refer to
5093 embedded Perl. It is therefore impossible to set a protocol value of "d" or
5094 "s", but I don't think that's a major issue.
5096 10. A number of refactoring changes to the code, none of which should affect
5099 (a) The number of logging options was getting close to filling up the
5100 32-bit word that was used as a bit map. I have split them into two classes:
5101 those that are passed in the argument to log_write(), and those that are
5102 only ever tested independently outside of that function. These are now in
5103 separate 32-bit words, so there is plenty of room for expansion again.
5104 There is no change in the user interface or the logging behaviour.
5106 (b) When building, for example, log lines, the code previously used a
5107 macro that called string_cat() twice, in order to add two strings. This is
5108 not really sufficiently general. Furthermore, there was one instance where
5109 it was actually wrong because one of the argument was used twice, and in
5110 one call a function was used. (As it happened, calling the function twice
5111 did not affect the overall behaviour.) The macro has been replaced by a
5112 function that can join an arbitrary number of extra strings onto a growing
5115 (c) The code for expansion conditions now uses a table and a binary chop
5116 instead of a serial search (which was left over from when there were very
5117 few conditions). Also, it now recognizes conditions like "pam" even when
5118 the relevant support is not compiled in: a suitably worded error message is
5119 given if an attempt is made to use such a condition.
5121 11. Added ${time_interval:xxxxx}.
5123 12. A bug was causing one of the ddress fields not to be passed back correctly
5124 from remote delivery subprocesses. The field in question was not being
5125 subsequently used, so this caused to problems in practice.
5127 13. Added new log selectors queue_time and deliver_time.
5129 14. Might have fixed a bug in maildirsizefile handling that threw up
5130 "unexpected character" debug warnings, and recalculated the data
5131 unnecessarily. In any case, I expanded the warning message to give more
5134 15. Added the message "Restricted characters in address" to the statements in
5135 the default ACL that block characters like @ and % in local parts.
5137 16. Change 71 for release 4.31 proved to be much less benign that I imagined.
5138 Three changes have been made:
5140 (a) There was a serious bug; a negative response to MAIL caused the whole
5141 recipient domain to be cached as invalid, thereby blocking all messages
5142 to all local parts at the same domain, from all senders. This bug has
5143 been fixed. The domain is no longer cached after a negative response to
5144 MAIL if the sender used is not empty.
5146 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
5149 (c) A new callout option, "use_sender" has been added for people who want
5150 the modified behaviour.
5156 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
5159 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
5160 indeed breaks things for older releases.
5162 3. Added additional logging to the case where there is a problem reading data
5163 from a filter that is running in a subprocess using a pipe, in order to
5164 try to track down a specific problem.
5166 4. Testing facility fudge: when running in the test harness and attempting
5167 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
5168 getting "No route to host". Convert this to a timeout.
5170 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
5173 6. Some OS don't have socklen_t but use size_t instead. This affects the
5174 fifth argument of getsockopt() amongst other things. This is now
5175 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
5176 can be set for individual OS. I have set it for SunOS5, OSF1, and
5177 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
5178 some earlier ones do not.
5180 7. Change 4.30/15 was not doing the test caselessly.
5182 8. The standard form for an IPv6 address literal was being rejected by address
5183 parsing in, for example, MAIL and RCPT commands. An example of this kind of
5184 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
5185 this, as well as the form without the "IPv6" on the front (but only when
5186 address literals are enabled, of course).
5188 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
5190 10. Exim crashed if a message with an empty sender address specified by -f
5191 encountered a router with an errors_to setting. This could be provoked only
5192 by a command such as
5196 where an empty string was supplied; "<>" did not hit this bug.
5198 11. Installed PCRE release 4.5.
5200 12. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
5201 remained set. It is now erased.
5203 13. exiqgrep wasn't working on MacOS X because it didn't correctly compute
5204 times from message ids (which are base 36 rather than the normal 62).
5206 14. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
5207 were being counted as actual protocol errors, and logged if the log
5208 selector +smtp_protocol_error was set. One cannot be perfect in this test,
5209 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
5210 and DATA following a set of rejected RCPTs do not count as protocol errors.
5211 In other words, Exim assumes they were pipelined, though this may not
5212 actually be the case. Of course, in all cases the client gets an
5213 appropriate error code.
5215 15. If a lookup fails in an ACL condition, a message about the failure may
5216 be available; it is used if testing the ACL cannot continue, because most
5217 such messages specify what the cause of the deferral is. However, some
5218 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
5219 that caused an old message to be retained and used if a later statement
5220 caused a defer, replacing the real cause of the deferral.
5222 16. If an IP address had so many PTR records that the DNS lookup buffer
5223 was not large enough to hold them, Exim could crash while trying to process
5224 the truncated data. It now detects and logs this case.
5226 17. Further to 4.21/58, another change has been made: if (and only if) the
5227 first line of a message (the first header line) ends with CRLF, a bare LF
5228 in a subsequent header line has a space inserted after it, so as not to
5229 terminate the header.
5231 18. Refactoring: tidied an ugly bit of code in appendfile that copied data
5232 unnecessarily, used atoi() instead of strtol(), and didn't check the
5233 termination when getting file sizes from file names by regex.
5235 19. Completely re-implemented the support for maildirsize files, in the light
5236 of a number of problems with the previous contributed implementation
5237 (4.30/29). In particular:
5239 . If the quota is zero, the maildirsize file is maintained, but no quota is
5242 . If the maildir directory does not exist, it is created before any attempt
5243 to write a maildirsize file.
5245 . The quota value in the file is just a cache; if the quota is changed in
5246 the transport, the new value overrides.
5248 . A regular expression is available for excluding directories from the
5251 20. The autoreply transport checks the characters in options that define the
5252 message's headers; it allows continued headers, but it was checking with
5253 isspace() after an embedded newline instead of explicitly looking for a
5256 21. If all the "regular" hosts to which an address was routed had passed their
5257 expiry times, and had not reached their retry times, the address was
5258 bounced, even if fallback hosts were defined. Now Exim should go on to try
5261 22. Increased buffer sizes in the callout code from 1024 to 4096 to match the
5262 equivalent code in the SMTP transport. Some hosts send humungous responses
5263 to HELO/EHLO, more than 1024 it seems.
5265 23. Refactoring: code in filter.c used (void *) for "any old type" but this
5266 gives compiler warnings in some environments. I've now done it "properly",
5269 24. The replacement for inet_ntoa() that is used with gcc on IRIX systems
5270 (because of problems with the built-in one) was declared to return uschar *
5271 instead of char *, causing compiler failure.
5273 25. Fixed a file descriptor leak when processing alias/forward files.
5275 26. Fixed a minor format string issue in dbfn.c.
5277 27. Typo in exim.c: ("dmbnz" for "dbmnz").
5279 28. If a filter file refered to $h_xxx or $message_headers, and the headers
5280 contained RFC 2047 "words", Exim's memory could, under certain conditions,
5283 29. When a sender address is verified, it is cached, to save repeating the test
5284 when there is more than one recipient in a message. However, when the
5285 verification involves a callout, it is possible for different callout
5286 options to be set for different recipients. It is too complicated to keep
5287 track of this in the cache, so now Exim always runs a verification when a
5288 callout is required, relying on the callout cache for the optimization.
5289 The overhead is duplication of the address routing, but this should not be
5292 30. Fixed a bug in callout caching. If a RCPT command caused the sender address
5293 to be verified with callout=postmaster, and the main callout worked but the
5294 postmaster check failed, the verification correctly failed. However, if a
5295 subsequent RCPT command asked for sender verification *without* the
5296 postmaster check, incorrect caching caused this verification also to fail,
5299 31. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
5300 it was not caching the DNS options (qualify_single, search_parents) that
5301 were used when the lookup failed. A subsequent lookup with different
5302 options therefore always gave the same answer, though there were cases
5303 where it should not have. (Example: a "domains = !$mx_any" option on a
5304 dnslookup router: the "domains" option is always processed without any
5305 widening, but the router might have qualify_single set.) Now Exim uses the
5306 cached value only when the same options are set.
5308 32. Added John Jetmore's "exipick" utility to the distribution.
5310 33. GnuTLS: When an attempt to start a TLS session fails for any reason other
5311 than a timeout (e.g. a certificate is required, and is not provided), an
5312 Exim server now closes the connection immediately. Previously it waited for
5313 the client to close - but if the client is SSL, it seems that they each
5314 wait for each other, leading to a delay before one of them times out.
5316 34: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
5317 maintained 0.8.x compatibility because I don't think many are using it, and
5318 it is clearly obsolete.
5320 35. Added TLS support for CRLs: a tls_crl global option and one for the smtp
5323 36. OpenSSL: $tls_certificate_verified was being set to 1 even if the
5324 client certificate was expired. A simple patch fixes this, though I don't
5325 understand the full logic of why the verify callback is called multiple
5328 37. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
5329 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
5330 which causes problems with some clients (such as the Certicom SSL Plus
5331 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
5332 disables the coutermeasure allowing Eudora to connect."
5334 38. Exim was not checking that a write() to a log file succeeded. This could
5335 lead to Bad Things if a log got too big, in particular if it hit a file
5336 size limit. Exim now panics and dies if it cannot write to a log file, just
5337 as it does if it cannot open a log file.
5339 39. Modified OS/Makefile-Linux so that it now contains
5341 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
5343 The two -D definitions ensure that Exim is compiled with large file
5344 support, which makes it possible to handle log files that are bigger than
5347 40. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
5348 instance) a domain was checked against a named list that involved a lookup,
5349 causing $domain_data to be set, then another domain was checked against the
5350 same list, then the first domain was re-checked, the value of $domain_data
5351 after the final check could be wrong. In particular, if the second check
5352 failed, it could be set empty. This bug probably also applied to
5355 41. The strip_trailing_dot option was not being applied to the address given
5356 with the -f command-line option.
5358 42. The code for reading a message's header from the spool was incrementing
5359 $received_count, but never initializing it. This meant that the value was
5360 incorrect (doubled) while delivering a message in the same process in which
5361 it was received. In the most common configuration of Exim, this never
5362 happens - a fresh exec is done - but it can happen when
5363 deliver_drop_privilege is set.
5365 43. When Exim logs an SMTP synchronization error - client data sent too soon -
5366 it now includes up to 150 characters of the unexpected data in the log
5369 44. The exim_dbmbuild utility uses fixed size buffers for reading input lines
5370 and building data strings. The size of both of these buffers was 10 000
5371 bytes - far larger than anybody would *ever* want, thought I. Needless to
5372 say, somebody hit the limit. I have increased the maximum line length to
5373 20 000 and the maximum data length of concatenated lines to 100 000. I have
5374 also fixed two bugs, because there was no checking on these buffers. Tsk,
5375 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
5376 buffer is too small.
5378 45. The exim_dbmbuild utility did not support quoted keys, as Exim does in
5379 lsearch lookups. Now it does.
5381 46. When parsing a route_list item in a manualroute router, a fixed-length
5382 buffer was used for the list of hosts. I made this 1024 bytes long,
5383 thinking that nobody would ever have a list of hosts that long. Wrong.
5384 Somebody had a whole pile of complicated expansion conditions, and the
5385 string was silently truncated, leading to an expansion error. It turns out
5386 that it is easier to change to an unlimited length (owing to other changes
5387 that have happened since this code was originally written) than to build
5388 structure for giving a limitation error. The length of the item that
5389 expands into the list of hosts is now unlimited.
5391 47. The lsearch lookup could not handle data where the length of text line was
5392 more than 4095 characters. Such lines were truncated, leading to shortened
5393 data being returned. It should now handle lines of any length.
5395 48. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
5396 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
5399 49. Cosmetic tidy to scripts like exicyclog that are generated by globally
5400 replacing strings such as BIN_DIRECTORY in a source file: the replacement
5401 no longer happens in comment lines. A list of replacements is now placed
5402 at the head of all of the source files, except those whose only change is
5403 to replace PERL_COMMAND in the very first #! line.
5405 50. Replaced the slow insertion sort in queue.c, for sorting the list of
5406 messages on the queue, with a bottom-up merge sort, using code contributed
5407 by Michael Haardt. This should make operations like -bp somewhat faster on
5408 large queues. It won't affect queue runners, except when queue_run_in_order
5411 51. Installed eximstats 1.31 in the distribution.
5413 52. Added support for SRV lookups to the dnslookup router.
5415 53. If an ACL referred to $message_body or $message_body_end, the value was not
5416 reset for any messages that followed in the same SMTP session.
5418 54. The store-handling optimization for building very long strings was not
5419 differentiating between the different store pools. I don't think this
5420 actually made any difference in practice, but I've tidied it.
5422 55. While running the routers to verify a sender address, $sender_address
5423 was still set to the sender address. This is wrong, because when routing to
5424 send a bounce to the sender, it would be empty. Therefore, I have changed
5425 it so that, while verifying a sender address, $sender_address is set to <>.
5426 (There is no change to what happens when verifying a recipient address.)
5428 56. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
5429 target A or AAAA records (if not already returned) without resetting the
5430 qualify_single or search_parents options of the DNS resolver. These are
5431 inappropriate in this case because the targets of MX and SRV records must
5432 be FQDNs. A broken DNS record could cause trouble if it happened to have a
5433 target that, when qualified, matched something in the local domain. These
5434 two options are now turned off when doing these lookups.
5436 57. It seems that at least some releases of Reiserfs (which does not have the
5437 concept of a fixed number of inodes) returns zero and not -1 for the
5438 number of available inodes. This interacted badly with check_spool_inodes,
5439 which assumed that -1 was the "no such thing" setting. What I have done is
5440 to check that the total number of inodes is greater than zero before doing
5441 the test of how many are available.
5443 58. When a "warn" ACL statement has a log_message modifier, the message is
5444 remembered, and not repeated. This is to avoid a lot of repetition when a
5445 message has many recipients that cause the same warning to be written.
5446 Howewer, Exim was preserving the list of already written lines for an
5447 entire SMTP session, which doesn't seem right. The memory is now reset if a
5448 new message is started.
5450 59. The "rewrite" debugging flag was not showing the result of rewriting in the
5451 debugging output unless log_rewrite was also set.
5453 60. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
5454 of (int)(handle) when we know that handle contains (void *)(-1).
5456 61. The Exim daemon panic-logs an error return when it closes the incoming
5457 connection. However "connection reset by peer" seems to be common, and
5458 isn't really an error worthy of noting specially, so that particular error
5461 62. When Exim is trying to find all the local interfaces, it used to panic and
5462 die if the ioctl to get the interface flags failed. However, it seems that
5463 on at least one OS (Solaris 9) it is possible to have an interface that is
5464 included in the list of interfaces, but for which you get a failure error
5465 for this call. This happens when the interface is not "plumbed" into a
5466 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
5467 failure of the "get flags" call assumes that the interface is down.
5469 63. Added a ${eval10: operator, which assumes all numbers are decimal. This
5470 makes life easier for people who are doing arithmetic on fields extracted
5471 from dates, where you often get leading zeros that should not be
5472 interpreted as octal.
5474 64. Added qualify_domain to the redirect router, to override the global
5477 65. If a pathologically long header line contained very many addresses (the
5478 report of this problem mentioned 10 000) and each of them was rewritten,
5479 Exim could use up a very large amount of memory. (It kept on making new
5480 copies of the header line as it rewrote, and never released the old ones.)
5481 At the expense of a bit more processing, the header rewriting function has
5482 been changed so that it no longer eats memory in this way.
5484 66. The generation of the Received: header has been moved from the time that a
5485 message starts to be received, to the time that it finishes. The timestamp
5486 in the Received: header should now be very close to that of the <= log
5487 line. There are two side-effects of this change:
5489 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
5490 logged header lines no longer include the local Received: line, because
5491 it has not yet been created. The same applies to a copy of the message
5492 that is returned to a non-SMTP sender when a message is rejected.
5494 (b) When a filter file is tested using -bf, no additional Received: header
5495 is added to the test message. After some thought, I decided that this
5498 This change does not affect the value of $received_for. It is still set
5499 after address rewriting, but before local_scan() is called.
5501 67. Installed the latest Cygwin-specific files from the Cygwin maintainer.
5503 68. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
5504 gave an unhelpful panic error message, and a defer error. I have managed to
5505 change this behaviour so that it now rejects any supplied certificate,
5506 which seems right, as the list of acceptable certificates is empty.
5508 69. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
5509 gave an unhelpful defer error. I have not managed to make this reject any
5510 supplied certificates, but the error message it gives is "no certificate
5511 supplied", which is not helpful.
5513 70. exigrep's output now also includes lines that are not associated with any
5514 message, but which match the given pattern. Implemented by a patch from
5515 Martin Sluka, which also tidied up the Perl a bit.
5517 71. Recipient callout verification, like sender verification, was using <> in
5518 the MAIL FROM command. This isn't really the right thing, since the actual
5519 sender may affect whether the remote host accepts the recipient or not. I
5520 have changed it to use the actual sender in the callout; this means that
5521 the cache record is now keyed on a recipient/sender pair, not just the
5522 recipient address. There doesn't seem to be a real danger of callout loops,
5523 since a callout by the remote host to check the sender would use <>.
5524 [SEE ABOVE: changed after hitting problems.]
5526 72. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
5527 temporary errors. However, in the case of such a code being given after
5528 the end of a data transmission (i.e. after ".") Exim was failing to write
5529 a retry record for the message. (Yes, there was some broken host that was
5530 actually sending 8xx at this point.)
5532 73. An unknown lookup type in a host list could cause Exim to panic-die when
5533 the list was checked. (An example that provoked this was putting <; in the
5534 middle of a list instead of at the start.) If this happened during a DATA
5535 ACL check, a -D file could be left lying around. This kind of configuration
5536 error no longer causes Exim to die; instead it causes a defer errror. The
5537 incident is still logged to the main and panic logs.
5539 74. Buglet left over from Exim 3 conversion. The message "too many messages
5540 in one connection" was written to the rejectlog but not the mainlog, except
5541 when address rewriting (yes!) was being logged.
5543 75. Added write_rejectlog option.
5545 76. When a system filter was run not as root (that is, when system_filter_user
5546 was set), the values of the $n variables were not being returned to the
5547 main process; thus, they were not subsequently available in the $sn
5550 77. Added +return_path_on_delivery log selector.
5552 78. A connection timeout was being treated differently from recipients deferred
5553 when testing hosts_max_try with a message that was older than the host's
5554 retry timeout. (The host should not be counted, thus allowing all hosts to
5555 be tried at least once before bouncing.) This may have been the cause of an
5556 occasionally reported bug whereby a message would remain on the queue
5557 longer than the retry timeout, but would be bounced if a delivery was
5558 forced. I say "may" because I never totally pinned down the problem;
5559 setting up timeout/retry tests is difficult. See also the next item.
5561 79. The ultimate address timeout was not being applied to errors that involved
5562 a combination of host plus message (for example, a timeout on a MAIL
5563 command). When an address resolved to a number of possible hosts, and they
5564 were not all tried for each delivery (e.g. because of hosts_max_try), a
5565 message could remain on the queue longer than the retry timeout.
5567 80. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
5570 81. Fixed an obscure SMTP outgoing bug which required at least the following
5571 conditions: (a) there was another message waiting for the same server;
5572 (b) the server returned 5xx to all RCPT commands in the first message so
5573 that the message was not completed; (c) the server dropped the connection
5574 or gave a negative response to the RSET that Exim sends to abort the
5575 transaction. The observed case was a dropped connection after DATA that had
5576 been sent in pipelining mode. That is, the server had advertised PIPELINING
5577 but was not implementing it correctly. The effect of the bug was incorrect
5578 behaviour, such as trying another host, and this could lead to a crash.
5584 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
5585 and daemon.c were passed as pointers to ints; they should have been
5586 pointers to socklen_t variables (which are typically unsigned ints).
5588 2. Some signed/unsigned type warnings in the os.c file for Linux have been
5591 3. Fixed a really odd bug that affected only the testing scheme; patching a
5592 certain fixed string in the binary changed the value of another string that
5593 happened to be identical to the end of the original first string.
5595 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
5596 name", it returns that address as the IP address. On some operating
5597 systems (e.g. Solaris), it also passes back the IP address string as the
5598 "host name". However, on others (e.g. Linux), it passes back an empty
5599 string. Exim wasn't checking for this, and was changing the host name to an
5600 empty string, assuming it had been canonicized.
5602 5. Although rare, it is permitted to have more than one PTR record for a given
5603 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
5604 all the names associated with an address, because they do in Solaris.
5605 However, it seems that they do not in Linux for data that comes from the
5606 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
5607 I found this out when I moved to a new Linux workstation and tried to run
5608 the Exim test suite.
5610 To get round this problem I have changed the code so that it now does its
5611 own call to the DNS to look up PTR records when searching for a host name.
5612 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
5613 addresses that are only in /etc/hosts are still found.
5615 This behaviour is, however, controlled by an option called host_lookup_
5616 order, which defaults to "bydns:byaddr". If people want to use the other
5617 order, or indeed, just use one or the other means of lookup, they can
5618 specify it in this variable.
5620 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
5621 some operating systems, this comes back from gethostbyaddr() as an empty
5622 string, and this is what Exim used to test for. However, it seems that in
5623 other systems, "." is yielded. Exim now tests for this case too.
5625 7. The values of check_spool_space and check_log_space are now held internally
5626 as a number of kilobytes instead of an absolute number of bytes. If a
5627 numbers is specified without 'K' or 'M', it is rounded up to the nearest
5628 kilobyte. This means that much larger values can be stored.
5630 8. Exim monitor: an attempt to get the action menu when not actually pointing
5631 at a message produces an empty menu entitled "No message selected". This
5632 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
5633 no entries in it ("Shell widget menu has zero width and/or height"). So I
5634 have added a single, blank menu entry in this case.
5636 9. Added ${quote_local_part.
5638 10. MIME decoding is now applied to the contents of Subject: header lines when
5641 11. Now that a reference to $sender_host_address automatically causes a reverse
5642 lookup to occur if necessary (4.13/18), there is no need to arrange for a
5643 host lookup before query-style lookups in lists that might use this
5644 variable. This has therefore been abolished, and the "net-" prefix is no
5645 longer necessary for query-style lookups.
5647 12. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
5648 have been a typo for LFLAGS, so it has been changed.
5650 13. The install script calls Exim with "-C /dev/null" in order to find the
5651 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
5652 to be output. Howeve, since Exim outputs its version number before the
5653 error, it didn't break the script. It just looked ugly. I fixed this by
5654 always allowing "-C /dev/null" if the caller is root.
5656 14. Ignore overlarge ACL variable number when reading spool file - insurance
5657 against a later release with more variables having written the file.
5659 15. The standard form for an IPv6 address literal was being rejected by EHLO.
5660 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
5661 this, as well as the form without the "IPv6" on the front.
5663 16. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
5664 OS/Makefile-Darwin file.
5666 17. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
5667 only to LDAP libraries that do not have LDAP_OPT_DEREF.
5669 18. After change 4.21/52, "%ld" was used to format the contents of the $inode
5670 variable. However, some OS use ints for inodes. I've added cast to long int
5671 to get rid of the compiler warning.
5673 19. I had forgotten to lock out "/../" in configuration file names when
5674 ALT_CONFIG_PREFIX was set.
5676 20. Routers used for verification do not need to specify transports. However,
5677 if such a router generated a host list, and callout was configured, Exim
5678 crashed, because it could not find a port number from the (non-existent)
5679 transport. It now assumes port 25 in this circumstance.
5681 21. Added the -t option to exigrep.
5683 22. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
5684 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
5685 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
5686 them is set, LOOKUP_LSEARCH is forced.
5688 23. "exim -bV" now outputs a list of lookups that are included in the binary.
5690 24. Added sender and host information to the "rejected by local_scan()" log
5691 line; previously there was no indication of these.
5693 25. Added .include_if_exists.
5695 26. Change 3.952/11 added an explicit directory sync on top of a file sync for
5696 Linux. It turns out that not all file systems support this. Apparently some
5697 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
5698 do it.) To cope with this, the error EINVAL, which means that sync-ing is
5699 not supported on the file descriptor, is now ignored when Exim is trying to
5700 sync a directory. This applies only to Linux.
5702 27. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
5704 28. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
5705 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
5708 29. Added support for maildirsize files from supplied patch (modified a bit).
5710 30. The use of :fail: followed by an empty string could lead Exim to respond to
5711 sender verification failures with (e.g.):
5713 550 Verification failed for <xxx>
5714 550 Sender verify failed
5716 where the first response line was missing the '-' that indicates it is not
5717 the final line of the response.
5719 31. The loop for finding the name of the user that called Exim had a hardwired
5720 limit of 10; it now uses the value of finduser_retries, which is used for
5721 all other user lookups.
5723 32. Added $received_count variable, available in data and not_smtp ACLs, and at
5726 33. Exim was neglecting to zero errno before one call of strtol() when
5727 expanding a string and expecting an integer value. On some systems this
5728 resulted in spurious "integer overflow" errors. Also, it was casting the
5729 result into an int without checking.
5731 34. Testing for a connection timeout using "timeout_connect" in the retry rules
5732 did not work. The code looks as if it has *never* worked, though it appears
5733 to have been documented since at least releast 1.62. I have made it work.
5735 35. The "timeout_DNS" error in retry rules, also documented since at least
5736 1.62, also never worked. As it isn't clear exactly what this means, and
5737 clearly it isn't a major issue, I have abolished the feature by treating it
5738 as "timeout", and writing a warning to the main and panic logs.
5740 36. The display of retry rules for -brt wasn't always showing the error code
5743 37. Added new error conditions to retry rules: timeout_A, timeout_MX,
5744 timeout_connect_A, timeout_connect_MX.
5746 38. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
5747 to the empty sender.
5749 39. The daemon was not analysing the content of -oX till after it had closed
5750 stderr and disconnected from the controlling terminal. This meant that any
5751 syntax errors were only noted on the panic log, and the return code from
5752 the command was 0. By re-arranging the code a little, I've made the
5753 decoding happen first, so such errors now appear on stderr, and the return
5754 code is 1. However, the actual setting up of the sockets still happens in
5755 the disconnected process, so errors there are still only recorded on the
5758 40. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
5759 connections (as happens on some IP stacks) was logged at start up time as
5760 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
5761 it from "IPv6 and IPv4", which means that two separate sockets are being
5764 41. The debug output for gethostbyname2() or getipnodebyname() failures now
5765 says whether AF_INET or AF_INET6 was passed as an argument.
5767 42. Exiwhat output was messed up when time zones were included in log
5770 43. Exiwhat now gives more information about the daemon's listening ports,
5771 and whether -tls-on-connect was used.
5773 44. The "port" option of the smtp transport is now expanded.
5775 45. A "message" modifier in a "warn" statement in a non-message ACL was being
5776 silently ignored. Now an error message is written to the main and panic
5779 46. There's a new ACL modifier called "logwrite" which writes to a log file
5780 as soon as it is encountered.
5782 47. Added $local_user_uid and $local_user_gid at routing time.
5784 48. Exim crashed when trying to verify a sender address that was being
5787 49. Exim was recognizing only a space character after ".include". It now also
5788 recognizes a tab character.
5790 50. Fixed several bugs in the Perl script that creates the exim.8 man page by
5791 extracting the relevant information from the specification. The man page no
5792 longer contains scrambled data for the -d option, and I've added a section
5793 at the front about calling Exim under different names.
5795 51. Added "extra_headers" argument to the "mail" command in filter files.
5797 52. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
5800 53. Installed eximstats 1.29.
5802 54. Added transport_filter_timeout as a generic transport option.
5804 55. Exim no longer adds an empty Bcc: header to messages that have no To: or
5805 Cc: header lines. This was required by RFC 822, but it not required by RFC
5808 56. Exim used to add From:, Date:, and Message-Id: header lines to any
5809 incoming messages that did not have them. Now it does so only if the
5810 message originates locally, that is, if there is no associated remote host
5811 address. When Resent- header lines are present, this applies to the Resent-
5812 lines rather than the non-Resent- lines.
5814 57. Drop incoming SMTP connection after too many syntax or protocol errors. The
5815 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
5817 58. Messages for configuration errors now include the name of the main
5818 configuration file - useful now that there may be more than one file in a
5819 list (.included file names were always shown).
5821 59. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
5822 for those rare installations that do not start the daemon as root or run it
5823 setuid root. I've cut out the call to initgroups() if the daemon is not
5826 60. The Exim user and group can now be bound into the binary as text strings
5827 that are looked up at the start of Exim's processing.
5829 61. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
5831 62. Added $mailstore_basename variable.
5833 63. Installed patch to sieve.c from Michael Haardt.
5835 64. When Exim failed to open the panic log after failing to open the main log,
5836 the original message it was trying to log was written to stderr and debug
5837 output, but if they were not available (the usual case in production), it
5838 was lost. Now it is written to syslog before the two lines that record the
5839 failures to open the logs.
5841 65. Users' Exim filters run in subprocesses under the user's uid. It is
5842 possible for a "deliver" command or an alias in a "personal" command to
5843 provoke an address rewrite. If logging of address rewriting is configured,
5844 this fails because the process is not running as root or exim. There may be
5845 a better way of dealing with this, but for the moment (because 4.30 needs
5846 to be released), I have disabled address rewrite logging when running a
5847 filter in a non-root, non-exim process.
5853 1. The buildconfig auxiliary program wasn't quoting the value set for
5854 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
5855 not defined. This bug was masked in 4.22 by the effect that was fixed in
5858 2. Some messages that were rejected after a message id was allocated were
5859 shown as "incomplete" by exigrep. It no longer does this for messages that
5860 are rejected by local_scan() or the DATA or non-SMTP ACLs.
5862 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
5863 have allow_domain_literals set, the ID did not get logged in the <= line.
5864 Domain literals are now always recognized in Message-ID: header lines.
5866 4. The first argument for a ${extract expansion item is the key name or field
5867 number. Leading and trailing spaces in this item were not being ignored,
5868 causing some misleading effects.
5870 5. When deliver_drop_privilege was set, single queue runner processes started
5871 manually (i.e. by the command "exim -q") or by the daemon (which uses the
5872 same command in the process it spins off) were not dropping privilege.
5874 6. When the daemon running as "exim" started a queue runner, it always
5875 re-executed Exim in the spun-off process. This is a waste of effort when
5876 deliver_drop_privilege is set. The new process now just calls the
5877 queue-runner function directly.
5883 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
5886 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
5887 ignored. Though the use of -oP was forcing the writing of a pid file, it
5888 was always written to the default place.
5890 3. If the message "no IP address found for host xxxx" is generated during
5891 incoming verification, it is now followed by identification of the incoming
5892 connection (so you can more easily find what provoked it).
5894 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
5896 5. Added some features to "harden" Exim a bit more against certain attacks:
5898 (a) There is now a build-time option called FIXED_NEVER_USERS that can
5899 be put in Local/Makefile. This is like the never_users runtime option,
5900 but it cannot be overridden. The default setting is "root".
5902 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
5903 prefix string with which any file named in a -C command line option
5906 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
5907 is retained for -C and -D only if the caller of Exim is root. Without
5908 it, the exim user may also use -C and -D and retain privilege.
5910 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
5911 command line option is disabled.
5913 6. Macro names set by the -D option must start with an upper case letter, just
5914 like macro names defined in the configuration file.
5916 7. Added "dereference=" facility to LDAP.
5918 8. Two instances of the typo "uknown" in the source files are fixed.
5920 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
5921 the Configure-Makefile script screwed up while processing it.
5923 10. Incorporated PCRE 4.4.
5925 11. The SMTP synchronization check was not operating right at the start of an
5926 SMTP session. For example, it could not catch a HELO sent before the client
5927 waited for the greeting. There is now a check for outstanding input at the
5928 point when the greeting is written. Because of the duplex, asynchronous
5929 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
5930 way, but not yet received, when the check is performed.
5932 12. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
5933 on TCP/IP sockets, because this apparently causes some broken clients to
5936 13. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
5937 unchanged) from the Cygwin maintainer.
5939 14. The code for -bV that shows what is in the binary showed "mbx" when maildir
5940 was supported instead of testing for mbx. Effectively a typo.
5942 15. The spa authenticator server code was not checking that the input it
5943 received was valid base64.
5945 16. The debug output line for the "set" modifier in ACLs was not showing the
5946 name of the variable that was being set.
5948 17. Code tidy: the variable type "vtype_string" was never used. Removed it.
5950 18. Previously, a reference to $sender_host_name did not cause a DNS reverse
5951 lookup on its own. Something else was needed to trigger the lookup. For
5952 example, a match in host_lookup or the need for a host name in a host list.
5953 Now, if $sender_host_name is referenced and the host name has not yet been
5954 looked up, a lookup is performed. If the lookup fails, the variable remains
5955 empty, and $host_lookup_failed is set to "1".
5957 19. Added "eqi" as a case-independent comparison operator.
5959 20. The saslauthd authentication condition could segfault if neither service
5960 nor realm was specified.
5962 21. If an overflowing value such as "2048M" was set for message_size_limit, the
5963 error message that was logged was misleading, and incoming SMTP
5964 connections were dropped. The message is now more accurate, and temporary
5965 errors are given to SMTP connections.
5967 22. In some error situations (such as 21 above) Exim rejects all SMTP commands
5968 (except RSET) with a 421 error, until QUIT is received. However, it was
5969 failing to send a response to QUIT.
5971 23. The HELO ACL was being run before the code for helo_try_verify_hosts,
5972 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
5973 ACL is now run after the helo_try_verify_hosts code.
5975 24. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
5976 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
5977 case-independent, so other case variants are also recognized). Apparently
5978 some systems use these upper case variants.
5980 25. If more than two messages were waiting for the same host, and a transport
5981 filter was specified for the transport, Exim sent two messages over the
5982 same TCP/IP connection, and then failed with "socket operation on non-
5983 socket" when it tried to send the third.
5985 26. Added Exim::debug_write and Exim::log_write for embedded Perl use.
5987 27. The extern definition of crypt16() in expand.c was not being excluded when
5988 the OS had its own crypt16() function.
5990 28. Added bounce_return_body as a new option, and bounce_return_size_limit
5991 as a preferred synonym for return_size_limit, both as an option and as an
5994 29. Added LIBS=-liconv to OS/Makefile-OSF1.
5996 30. Changed the default configuration ACL to relax the local part checking rule
5997 for addresses that are not in any local domains. For these addresses,
5998 slashes and pipe symbols are allowed within local parts, but the sequence
5999 /../ is explicitly forbidden.
6001 31. SPA server authentication was not clearing the challenge buffer before
6004 32. log_message in a "warn" ACL statement was writing to the reject log as
6005 well as to the main log, which contradicts the documentation and doesn't
6006 seem right (because no rejection is happening). So I have stopped it.
6008 33. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
6009 However, I am unable to do any testing of this.
6011 34. Fixed an infelicity in the appendfile transport. When checking directories
6012 for a mailbox, to see if any needed to be created, it was accidentally
6013 using path names with one or more superfluous leading slashes; tracing
6014 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
6016 35. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
6017 contents are added to the log line that is written for every discarded
6018 recipient. (Previously a log_message setting was ignored.)
6020 36. The ${quote: operator now quotes the string if it is empty.
6022 37. The install script runs exim in order to find its version number. If for
6023 some reason other than non-existence or emptiness, which it checks, it
6024 could not run './exim', it was installing it with an empty version number,
6025 i.e. as "exim-". This error state is now caught, and the installation is
6028 38. An argument was missing from the function that creates an error message
6029 when Exim fails to connect to the socket for saslauthd authentication.
6030 This could cause Exim to crash, or give a corrupted message.
6032 39. Added isip, isip4, and isip6 to ${if conditions.
6034 40. The ACL variables $acl_xx are now saved with the message, and can be
6035 accessed later in routers, transports, and filters.
6037 41. The new lookup type nwildlsearch is like wildlsearch, except that the key
6038 strings in the file are not string-expanded.
6040 42. If a MAIL command specified a SIZE value that was too large to fit into an
6041 int variable, the check against message_size_limit failed. Such values are
6042 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
6043 day this will have to be increased, but I don't think I want to be around
6044 when emails are that large.
6051 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
6052 iconv() is not standard in FreeBSD.
6054 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with
6055 IPv6 enabled. The observed symptom was a segmentation fault on return from
6056 the function os_common_find_running_interfaces() in src/os.c.
6058 3. In the check_special_case() function in daemon.c I had used "errno" as an
6059 argument name, which causes warnings on some systems. This was basically a
6060 typo, since it was named "eno" in the comments!
6062 4. The code that waits for the clock to tick (at a resolution of some fraction
6063 of a second) so as to ensure message-id uniqueness was always waiting for
6064 at least one whole tick, when it could have waited for less. [This is
6065 almost certainly not relevant at current processor speeds, where it is
6066 unlikely to ever wait at all. But we try to future-proof.]
6068 5. The function that sleeps for a time interval that includes fractions of a
6069 second contained a race. It did not block SIGALRM between setting the
6070 timer, and suspending (a couple of lines later). If the interval was short
6071 and the sigsuspend() was delayed until after it had expired, the suspension
6072 never ended. On busy systems this could lead to processes getting stuck for
6075 6. Some uncommon configurations may cause a lookup to happen in a queue runner
6076 process, before it forks any delivery processes. The open lookup caching
6077 mechanism meant that the open file or database connection was passed into
6078 the delivery process. The problem was that delivery processes always tidy
6079 up cached lookup data. This could cause a problem for the next delivery
6080 process started by the queue runner, because the external queue runner
6081 process does not know about the closure. So the next delivery process
6082 still has data in the lookup cache. In the case of a file lookup, there was
6083 no problem because closing a file descriptor in a subprocess doesn't affect
6084 the parent. However, if the lookup was caching a connection to a database,
6085 the connection was closed, and the second delivery process was likely to
6086 see errors such as "PGSQL: query failed: server closed the connection
6087 unexpectedly". The problem has been fixed by closing all cached lookups
6088 in a queue runner before running a delivery process.
6090 7. Compiler warning on Linux for the second argument of iconv(), which doesn't
6091 seem to have the "const" qualifier which it has on other OS. I've
6094 8. Change 4.21/2 was too strict. It is only if there are two authenticators
6095 *of the same type* (client or server) with the same public name that an
6096 error should be diagnosed.
6098 9. When Exim looked up a host name for an IP address, but failed to find the
6099 original IP address when looking up the host name (a safety check), it
6100 output the message "<ip address> does not match any IP for NULL", which was
6101 confusing, to say the least. The bug was that the host name should have
6102 appeared instead of "NULL".
6104 10. Since release 3.03, if Exim is called by a uid other than root or the Exim
6105 user that is built into the binary, and the -C or -D options is used, root
6106 privilege is dropped before the configuration file is read. In addition,
6107 logging is switched to stderr instead of the normal log files. If the
6108 configuration then re-defines the Exim user, the unprivileged environment
6109 is probably not what is expected, so Exim logs a panic warning message (but
6112 However, if deliver_drop_privilege is set, the unprivileged state may well
6113 be exactly what is intended, so the warning has been cut out in that case,
6114 and Exim is allowed to try to write to its normal log files.
6120 1. smtp_return_error_details was not giving details for temporary sender
6121 or receiver verification errors.
6123 2. Diagnose a configuration error if two authenticators have the same public
6126 3. Exim used not to create the message log file for a message until the first
6127 delivery attempt. This could be confusing when incoming messages were held
6128 for policy or load reasons. The message log file is now created at the time
6129 the message is received, and an initial "Received" line is written to it.
6131 4. The automatically generated man page for command line options had a minor
6132 bug that caused no ill effects; however, a more serious problem was that
6133 the procedure for building the man page automatically didn't always
6134 operate. Consequently, release 4.20 contains an out-of-date version. This
6135 shouldn't happen again.
6137 5. When building Exim with embedded Perl support, the script that builds the
6138 Makefile was calling 'perl' to find its compile-time parameters, ignoring
6139 any setting of PERL_COMMAND in Local/Makefile. This is now fixed.
6141 6. The freeze_tell option was not being used for messages that were frozen on
6142 arrival, either by an ACL or by local_scan().
6144 7. Added the smtp_incomplete_transaction log selector.
6146 8. After STARTTLS, Exim was not forgetting that it had advertised AUTH, so it
6147 was accepting AUTH without a new EHLO.
6149 9. Added tls_remember_esmtp to cope with YAEB. This allows AUTH and other
6150 ESMTP extensions after STARTTLS without a new EHLO, in contravention of the
6153 10. Logging of TCP/IP connections (when configured) now happens in the main
6154 daemon process instead of the child process, so that the TCP/IP connection
6155 count is more accurate (but it can never be perfect).
6157 11. The use of "drop" in a nested ACL was not being handled correctly in the
6158 outer ACL. Now, if condition failure induced by the nested "drop" causes
6159 the outer ACL verb to deny access ("accept" or "discard" after "endpass",
6160 or "require"), the connection is dropped.
6162 12. Similarly, "discard" in a nested ACL wasn't being handled. A nested ACL
6163 that yield "discard" can now be used with an "accept" or a "discard" verb,
6164 but an error is generated for any others (because I can't see a useful way
6165 to define what should happen).
6167 13. When an ACL is read dynamically from a file (or anywhere else), the lines
6168 are now processed in the same way as lines in the Exim configuration file.
6169 In particular, continuation lines are supported.
6171 14. Added the "dnslists = a.b.c!=n.n.n.n" feature.
6173 15. Added -ti meaning -t -i.
6175 16. Check for letters, digits, hyphens, and dots in the names of dnslist
6176 domains, and warn by logging if others are found.
6178 17. At least on BSD, alignment is not guarenteed for the array of ifreq's
6179 returned from GIFCONF when Exim is trying to find the list of interfaces on
6180 a host. The code in os.c has been modified to copy each ifreq to an aligned
6181 structure in all cases.
6183 Also, in some cases, the returned ifreq's were being copied to a 'struct
6184 ifreq' on the stack, which was subsequently passed to host_ntoa(). That
6185 means the last couple of bytes of an IPv6 address could be chopped if the
6186 ifreq contained only a normal sockaddr (14 bytes storage).
6188 18. Named domain lists were not supported in the hosts_treat_as_local option.
6189 An entry such as +xxxx was not recognized, and was treated as a literal
6192 19. Ensure that header lines added by a DATA ACL are included in the reject log
6193 if the ACL subsequently rejects the message.
6195 20. Upgrade the cramtest.pl utility script to use Digest::MD5 instead of just
6196 MD5 (which is deprecated).
6198 21. When testing a filter file using -bf, Exim was writing a message when it
6199 took the sender from a "From " line in the message, but it was not doing so
6200 when it took $return_path from a Return-Path: header line. It now does.
6202 22. If the contents of a "message" modifier for a "warn" ACL verb do not begin
6203 with a valid header line field name (a series of printing characters
6204 terminated by a colon, Exim now inserts X-ACL-Warn: at the beginning.
6206 23. Changed "disc" in the source to "disk" to conform to the documentation and
6207 the book and for uniformity.
6209 24. Ignore Sendmail's -Ooption=value command line item.
6211 25. When execve() failed while trying to run a command in a pipe transport,
6212 Exim was returning EX_UNAVAILBLE (69) from the subprocess. However, this
6213 could be confused with a return value of 69 from the command itself. This
6214 has been changed to 127, the value the shell returns if it is asked to run
6215 a non-existent command. The wording for the related log line suggests a
6216 non-existent command as the problem.
6218 26. If received_header_text expands to an empty string, do not add a Received:
6219 header line to the message. (Well, it adds a token one on the spool, but
6220 marks it "old" so that it doesn't get used or transmitted.)
6222 27. Installed eximstats 1.28 (addition of -nt option).
6224 28. There was no check for failure on the call to getsockname() in the daemon
6225 code. This can fail if there is a shortage of resources on the system, with
6226 ENOMEM, for example. A temporary error is now given on failure.
6228 29. Contrary to the C standard, it seems that in some environments, the
6229 equivalent of setlocale(LC_ALL, "C") is not obeyed at the start of a C
6230 program. Exim now does this explicitly; it affects the formatting of
6231 timestamps using strftime().
6233 30. If exiqsumm was given junk data, it threw up some uninitialized variable
6234 complaints. I've now initialized all the variables, to avoid this.
6236 32. Header lines added by a system filter were not being "seen" during
6237 transport-time rewrites.
6239 33. The info_callback() function passed to OpenSSL is set up with type void
6240 (*)(SSL *, int, int), as described somewhere. However, when calling the
6241 function (actually a macro) that sets it up, the type void(*)() is
6242 expected. I've put in a cast to prevent warnings from picky compilers.
6244 34. If a DNS black list lookup found a CNAME record, but there were no A
6245 records associated with the domain it pointed at, Exim crashed.
6247 35. If a DNS black list lookup returned more than one A record, Exim ignored
6248 all but the first. It now scans all returned addresses if a particular IP
6249 value is being sought. In this situation, the contents of the
6250 $dnslist_value variable are a list of all the addresses, separated by a
6253 36. Tightened up the rules for host name lookups using reverse DNS. Exim used
6254 to accept a host name and all its aliases if the forward lookup for any of
6255 them yielded the IP address of the incoming connection. Now it accepts only
6256 those names whose forward lookup yields the correct IP address. Any other
6257 names are discarded. This closes a loophole whereby a rogue DNS
6258 administrator could create reverse DNS records to break through a
6259 wildcarded host restriction in an ACL.
6261 37. If a user filter or a system filter that ran in a subprocess used any of
6262 the numerical variables ($1, $2 etc), or $thisaddress, in a pipe command,
6263 the wrong values were passed to the pipe command ($thisaddress had the
6264 value of $0, $0 had the value of $1, etc). This bug was introduced by
6265 change 4.11/101, and not discovered because I wrote an inadequate test. :-(
6267 38. Improved the line breaking for long SMTP error messages from ACLs.
6268 Previously, if there was no break point between 40 and 75 characters, Exim
6269 left the rest of the message alone. Two changes have been made: (a) I've
6270 reduced the minimum length to 35 characters; (b) if it can't find a break
6271 point between 35 and 75 characters, it looks ahead and uses the first one
6272 that it finds. This may give the occasional overlong line, but at least the
6273 remaining text gets split now.
6275 39. Change 82 of 4.11 was unimaginative. It assumed the limit on the number of
6276 file descriptors might be low, and that setting 1000 would always raise it.
6277 It turns out that in some environments, the limit is already over 1000 and
6278 that lowering it causes trouble. So now Exim takes care not to decrease it.
6280 40. When delivering a message, the value of $return_path is set to $sender_
6281 address at the start of routing (routers may change the value). By an
6282 oversight, this default was not being set up when an address was tested by
6283 -bt or -bv, which affected the outcome if any router or filter referred to
6286 41. The idea of the "warn" ACL verb is that it adds a header or writes to the
6287 log only when "message" or "log_message" are set. However, if one of the
6288 conditions was an address verification, or a call to a nested ACL, the
6289 messages generated by the underlying test were being passed through. This
6290 no longer happens. The underlying message is available in $acl_verify_
6291 message for both "message" and "log_message" expansions, so it can be
6292 passed through if needed.
6294 42. Added RFC 2047 interpretation of header lines for $h_ expansions, with a
6295 new expansion $bh_ to give the encoded byte string without charset
6296 translation. Translation happens only if iconv() is available; HAVE_ICONV
6297 indicates this at build time. HEADERS_CHARSET gives the charset to
6298 translate to; headers_charset can change it in the configuration, and
6299 "headers charset" can change it in an individual filter file.
6301 43. Now that we have a default RFC 2047 charset (see above), the code in Exim
6302 that creates RFC 2047 encoded "words" labels them as that charset instead
6303 of always using iso-8859-1. The cases are (i) the explicit ${rfc2047:
6304 expansion operator; (ii) when Exim creates a From: line for a local
6305 message; (iii) when a header line is rewritten to include a "phrase" part.
6307 44. Nasty bug in exiqsumm: the regex to skip already-delivered addresses was
6308 buggy, causing it to skip the first lines of messages whose message ID
6309 ended in 'D'. This would not have bitten before Exim release 4.14, because
6310 message IDs were unlikely to end in 'D' before then. The effect was to have
6311 incorrect size information for certain domains.
6313 45. #include "config.h" was missing at the start of the crypt16.c module. This
6314 caused trouble on Tru64 (aka OSF1) systems, because HAVE_CRYPT16 was not
6317 46. If there was a timeout during a "random" callout check, Exim treated it as
6318 a failure of the random address, and carried on sending RSET and the real
6319 address. If the delay was just some slowness somewhere, the response to the
6320 original RCPT would be taken as a response to RSET and so on, causing
6321 mayhem of various kinds.
6323 47. Change 50 for 4.20 was a heap of junk. I don't know what I was thinking
6324 when I implemented it. It didn't allow for the fact that some option values
6325 may legitimatetly be negative (e.g. size_addition), and it didn't even do
6326 the right test for positive values.
6328 48. Domain names in DNS records are case-independent. Exim always looks them up
6329 in lower case. Some resolvers return domain names in exactly the case they
6330 appear in the zone file, that is, they may contain uppercase letters. Not
6331 all resolvers do this - some return always lower case. Exim was treating a
6332 change of case by a resolver as a change of domain, similar to a widening
6333 of a domain abbreviation. This triggered its re-routing code and so it was
6334 trying to route what was effectively the same domain again. This normally
6335 caused routing to fail (because the router wouldn't handle the domain
6336 twice). Now Exim checks for this case specially, and just changes the
6337 casing of the domain that it ultimately uses when it transmits the message
6340 49. Added Sieve (RFC 3028) support, courtesy of Michael Haardt's contributed
6343 50. If a filter generated a file delivery with a non-absolute name (possible if
6344 no home directory exists for the router), the forbid_file option was not
6347 51. Added '&' feature to dnslists, to provide bit mask matching in addition to
6348 the existing equality matching.
6350 52. Exim was using ints instead of ino_t variables in some places where it was
6351 dealing with inode numbers.
6353 53. If TMPDIR is defined in Local/Makefile (default in src/EDITME is
6354 TMPDIR="/tmp"), Exim checks for the presence of an environment variable
6355 called TMPDIR, and if it finds it is different, it changes its value.
6357 54. The smtp_printf() function is now made available to local_scan() so
6358 additional output lines can be written before returning. There is also an
6359 smtp_fflush() function to enable the detection of a dropped connection.
6360 The variables smtp_input and smtp_batched_input are exported to
6363 55. Changed the default runtime configuration: the message "Unknown user"
6364 has been removed from the ACL, and instead placed on the localuser router,
6365 using the cannot_route_message feature. This means that any verification
6366 failures that generate their own messages won't get overridden. Similarly,
6367 the "Unrouteable address" message that was in the ACL for unverifiable
6368 relay addresses has also been removed.
6370 56. Added hosts_avoid_esmtp to the smtp transport.
6372 57. The exicyclog script was not checking for the esoteric option
6373 CONFIGURE_FILE_USE_EUID in the Local/Makefile. It now does this, but it
6374 will work only if exicyclog is run under the appropriate euid.
6376 58. Following a discussion on the list, the rules by which Exim recognises line
6377 endings on incoming messages have been changed. The -dropcr and drop_cr
6378 options are now no-ops, retained only for backwards compatibility. The
6379 following line terminators are recognized: LF CRLF CR. However, special
6380 processing applies to CR:
6382 (i) The sequence CR . CR does *not* terminate an incoming SMTP message,
6383 nor a local message in the state where . is a terminator.
6385 (ii) If a bare CR is encountered in a header line, an extra space is added
6386 after the line terminator so as not to end the header. The reasoning
6387 behind this is that bare CRs in header lines are most likely either
6388 to be mistakes, or people trying to play silly games.
6390 59. The size of a message, as listed by "-bp" or in the Exim monitor window,
6391 was being incorrectly given as 18 bytes larger than it should have been.
6392 This is a VOB (very old bug).
6394 60. This may never have affected anything current, but just in case it has:
6395 When the local host is found other than at the start of a list of hosts,
6396 the local host, those with the same MX, and any that follow, are discarded.
6397 When the list in question was part of a longer list of hosts, the following
6398 hosts (not currently being processed) were also being discarded. This no
6399 longer happens. I'm not sure if this situation could ever has previously
6402 61. Added the "/MX" feature to lists of hosts in the manualroute and query
6405 62. Whenever Exim generates a new message, it now adds an Auto-Submitted:
6406 header. This is something that is recommended in a new Internet Draft, and
6407 is something that is documented as being done by Sendmail. There are two
6408 possible values. For messages generated by the autoreply transport, Exim
6411 Auto-Submitted: auto-replied
6413 whereas for all other generated messages (e.g. bounces) it adds
6415 Auto-Submitted: auto-generated
6417 63. The "personal" condition in filters now includes a test for the
6418 Auto-Submitted: header. If it contains the string "auto-" the message it
6419 not considered personal.
6421 64. Added rcpt_include_affixes as a generic transport option.
6423 65. Added queue_only_override (default true).
6425 66. Added the syslog_duplication option.
6427 67. If what should have been the first header line of a message consisted of
6428 a space followed by a colon, Exim was mis-interpreting it as a header line.
6429 It isn't of course - it is syntactically invalid and should therefore be
6430 treated as the start of the message body. The misbehaviour could have
6431 caused a number of strange effects, including loss of data in subsequent
6432 header lines, and spool format errors.
6434 68. Formerly, the AUTH parameter on a MAIL command was trusted only if the
6435 client host had authenticated. This control can now be exercised by an ACL
6436 for more flexibility.
6438 69. By default, callouts do not happen when testing with -bh. There is now a
6439 variant, -bhc, which does actually run the callout code, including
6440 consulting and updating the callout cache.
6442 70. Added support for saslauthd authentication, courtesy of Alexander
6445 71. If statvfs() failed on the spool or log directories while checking their
6446 size for availability, Exim confusingly gave the error "space shortage".
6447 Furthermore, in debugging mode it crashed with a floating point exception.
6448 These checks are done if check_{spool,log}_{space,inodes} are set, and when
6449 an SMTP message arrives with SIZE= on the MAIL command. As this is a really
6450 serious problem, Exim now writes to the main and panic logs when this
6451 happens, with details of the failure. It then refuses to accept the
6452 incoming message, giving the message "spool directory problem" or "log
6453 directory problem" with a 421 code for SMTP messages.
6455 72. When Exim is about to re-exec itself, it ensures that the file descriptors
6456 0, 1, and 2 exist, because some OS complain for execs without them (see
6457 ChangeLog 4.05/30). If necessary, Exim opens /dev/null to use for these
6458 descriptors. However, the code omitted to check that the open succeeded,
6459 causing mysterious errors if for some reason the permissions on /dev/null
6460 got screwed. Now Exim writes a message to the main and panic logs, and
6461 bombs out if it can't open /dev/null.
6463 73. Re-vamped the way daemon_smtp_port, local_interfaces, and -oX work and
6464 interact so that it is all more flexible. It is supposed to remain
6465 backwards compatible. Also added extra_local_interfaces.
6467 74. Invalid data sent to a SPA (NTLM) server authenticator could cause the code
6468 to bomb out with an assertion failure - to the client this appears as a
6469 connection drop. This problem occurs in the part of the code that was taken
6470 from the Samba project. Fortunately, the assertion is in a very simple
6471 function, so I have fixed this by reproducing the function inline in the
6472 one place where it is called, and arranging for authentication to fail
6473 instead of killing the process with assert().
6475 75. The SPA client code was not working when the server requested OEM rather
6476 than Unicode encoding.
6478 76. Added code to make require_files with a specific uid setting more usable in
6479 the case where statting the file as root fails - usually a non-root-mounted
6480 NFS file system. When this happens and the failure is EACCES, Exim now
6481 forks a subprocess and does the per-uid checking as the relevant uid.
6483 77. Added process_log_path.
6485 78. If log_file_path was not explicitly set, a setting of check_log_space or
6486 check_log_inodes was ignored.
6488 79. If a space check for the spool or log partitions fails, the incident is now
6489 logged. Of course, in the latter case the data may get lost...
6491 80. Added the %p formatting code to string_format() so that it can be used to
6492 print addresses in debug_print(). Adjusted all the address printing in the
6493 debugging in store.c to use %p rather than %d.
6495 81. There was a concern that a line of code in smtp_in.c could overflow a
6496 buffer if a HELO/EHLO command was given followed by 500 or so spaces. As
6497 initially expressed, the concern was not well-founded, because trailing
6498 spaces are removed early. However, if the trailing spaces were followed by
6499 a NULL, they did not get removed, so the overflow was possible. Two fixes
6502 (a) I re-wrote the offending code in a cleaner fashion.
6503 (b) If an incoming SMTP command contains a NULL character, it is rejected
6506 82. When Exim changes uid/gid to the Exim user at daemon start time, it now
6507 runs initgroups(), so that if the Exim user is in any additional groups,
6508 they will be used during message reception.
6514 The change log for 4.20 and earlier releases has been archived.
git://git.exim.org / users / jgh / exim.git / blob