1 Change log file for Exim from version 4.21
2 -------------------------------------------
7 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
8 and 3.4.4 - once the server is enabled to respond to an OCSP request
9 it does even when not requested, resulting in a stapling non-aware
10 client dropping the TLS connection.
12 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
13 support variable-length bit vectors. No functional change.
15 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
16 The I= interface field on outgoing lines is now after the H= remote
17 host field, same as incoming lines. There is a separate
18 outgoing_interface log selector which allows you to disable the
21 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
22 If not running log_selector +smtp_connection the mainlog would be held
23 open indefinitely after a "too many connections" event, including to a
24 deleted file after a log rotate. Leave the per net connection logging
25 leaving it open for efficiency as that will be quickly detected by the
26 check on the next write.
28 HS/01 Bug 1671: Fix post transport crash.
29 Processing the wait-<transport> messages could crash the delivery
30 process if the message IDs didn't exist for some reason. When
31 using 'split_spool_directory=yes' the construction of the spool
32 file name failed already, exposing the same netto behaviour.
34 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
35 mime_regex ACL conditions.
37 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
38 to DSN fail messages (bounces): remote IP, remote greeting, remote response
39 to HELO, local diagnostic string.
41 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
42 log line to debug. Even when configured with a tls authenticator many
43 client connections are expected to not authenticate in this way, so
44 an authenticate fail is not an error.
46 HS/02 Add the Exim version string to the process info. This way exiwhat
47 gives some more detail about the running daemon.
49 JH/06 Bug 1395: time-limit cacheing of DNS lookups, to the TTL value. This may
50 matter for fast-change records such as DNSBLs.
52 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
53 retry record, even if constant. There may be multiple transports with
54 different interface settings and the retry behaviour needs to be kept
57 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
59 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
61 JH/10 Bug 840: fix log_defer_output option of pipe transport
63 JH/11 Bug 830: use same host for all RCPTS of a message, even under
64 hosts_randomize. This matters a lot when combined with mua_wrapper.
66 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
67 ${quote_pgsql:<string>} operator.
69 JH/13 Bug 1708: avoid misaligned access in cached lookup.
74 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
77 JH/02 The smtp transport option "multi_domain" is now expanded.
79 JH/03 The smtp transport now requests PRDR by default, if the server offers
82 JH/04 Certificate name checking on server certificates, when exim is a client,
83 is now done by default. The transport option tls_verify_cert_hostnames
84 can be used to disable this per-host. The build option
85 EXPERIMENTAL_CERTNAMES is withdrawn.
87 JH/05 The value of the tls_verify_certificates smtp transport and main options
88 default to the word "system" to access the system default CA bundle.
89 For GnuTLS, only version 3.0.20 or later.
91 JH/06 Verification of the server certificate for a TLS connection is now tried
92 (but not required) by default. The verification status is now logged by
93 default, for both outbound TLS and client-certificate supplying inbound
96 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
99 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
100 Status Notification (bounce) messages are now MIME format per RFC 3464.
101 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
102 under the control of the dsn_advertise_hosts option, and routers may
103 have a dsn_lasthop option.
105 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
106 default, modifiable by a malware= option. The list separator for
107 the options can now be changed in the usual way. Bug 68.
109 JH/10 The smtp_receive_timeout main option is now expanded before use.
111 JH/11 The incoming_interface log option now also enables logging of the
112 local interface on delivery outgoing connections.
114 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
115 if the interface and destination host and port all match.
117 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
120 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
121 Patch from Andrew Lewis.
123 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
124 now supports optional time-restrictions, weighting, and priority
125 modifiers per server. Patch originally by <rommer@active.by>.
127 JH/16 The spamd_address main option now supports a mixed list of local
128 and remote servers. Remote servers can be IPv6 addresses, and
129 specify a port-range.
131 JH/17 Bug 68: The spamd_address main option now supports an optional
132 timeout value per server.
134 JH/18 Bug 1581: Router and transport options headers_add/remove can
135 now have the list separator specified.
137 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
140 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
143 JH/21 Support for the A6 type of dns record is withdrawn.
145 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
146 rather than the verbs used.
148 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
149 from 255 to 1024 chars.
151 JH/24 Verification callouts now attempt to use TLS by default.
153 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
154 are generic router options now. The defaults didn't change.
156 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
157 Original patch from Alexander Shikoff, worked over by JH.
159 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
160 files if ZCAT_COMMAND is not executable.
162 JH/26 Bug 1539: Add timout/retry options on dnsdb lookups.
164 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
166 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
167 Normally benign, it bites when the pair was led to by a CNAME;
168 modern usage is to not canoicalize the domain to a CNAME target
169 (and we were inconsistent anyway for A-only vs AAAA+A).
171 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
173 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
174 when evaluating $sender_host_dnssec.
176 JH/31 Check the HELO verification lookup for DNSSEC, adding new
177 $sender_helo_dnssec variable.
179 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
181 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
183 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
185 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
186 documented as working, but never had. Support all but $spam_report.
188 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
189 added for tls authenticator.
194 TL/01 When running the test suite, the README says that variables such as
195 no_msglog_check are global and can be placed anywhere in a specific
196 test's script, however it was observed that placement needed to be near
197 the beginning for it to behave that way. Changed the runtest perl
198 script to read through the entire script once to detect and set these
199 variables, reset to the beginning of the script, and then run through
200 the script parsing/test process like normal.
202 TL/02 The BSD's have an arc4random API. One of the functions to induce
203 adding randomness was arc4random_stir(), but it has been removed in
204 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
205 function when detected.
207 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
208 cause callback expansion.
210 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
211 syntax errors in an expansion can be treated as a string instead of
212 logging or causing an error, due to the internal use of bool_lax
213 instead of bool when processing it.
215 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
216 server certificates when making smtp deliveries.
218 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
220 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
222 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
224 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
225 Merged patch from Sebastian Wiedenroth.
227 JH/05 Fix results-pipe from transport process. Several recipients, combined
228 with certificate use, exposed issues where response data items split
229 over buffer boundaries were not parsed properly. This eventually
230 resulted in duplicates being sent. This issue only became common enough
231 to notice due to the introduction of conection certificate information,
232 the item size being so much larger. Found and fixed by Wolfgang Breyha.
234 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
235 size buffer was used, resulting in syntax errors when an expansion
238 JH/07 Add support for directories of certificates when compiled with a GnuTLS
239 version 3.3.6 or later.
241 JH/08 Rename the TPDA expermimental facility to Event Actions. The #ifdef
242 is EXPERIMENTAL_EVENT, the main-configuration and transport options
243 both become "event_action", the variables become $event_name, $event_data
244 and $event_defer_errno. There is a new variable $verify_mode, usable in
245 routers, transports and related events. The tls:cert event is now also
246 raised for inbound connections, if the main configuration event_action
249 TL/06 In test suite, disable OCSP for old versions of openssl which contained
250 early OCSP support, but no stapling (appears to be less than 1.0.0).
252 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
253 server certificate names available under the smtp transport option
254 "tls_verify_cert_hostname" now do not permit multi-component wildcard
257 JH/10 Time-related extraction expansions from certificates now use the main
258 option "timezone" setting for output formatting, and are consistent
259 between OpenSSL and GnuTLS compilations. Bug 1541.
261 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
262 encoded parameter in the incoming message. Bug 1558.
264 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
265 include certificate info, eximon was claiming there were spoolfile
268 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
270 JH/14 Log delivery-related information more consistently, using the sequence
271 "H=<name> [<ip>]" wherever possible.
273 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
274 are problematic for Debian distribution, omit them from the release
277 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
279 JH/16 Fix string representation of time values on 64bit time_t anchitectures.
282 JH/17 Fix a null-indirection in certextract expansions when a nondefault
283 output list separator was used.
288 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
289 checkers that were complaining about end of non-void function with no
292 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
293 This was a regression intruduced in 4.83 by another bugfix.
295 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
297 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
298 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
304 TF/01 Correctly close the server side of TLS when forking for delivery.
306 When a message was received over SMTP with TLS, Exim failed to clear up
307 the incoming connection properly after forking off the child process to
308 deliver the message. In some situations the subsequent outgoing
309 delivery connection happened to have the same fd number as the incoming
310 connection previously had. Exim would try to use TLS and fail, logging
311 a "Bad file descriptor" error.
313 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
314 utilities have not been installed.
316 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
317 temporary space as the ACL may create new global variables.
319 TL/01 LDAP support uses per connection or global context settings, depending
320 upon the detected version of the libraries at build time.
322 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
323 to extract and use the src ip:port in logging and expansions as if it
324 were a direct connection from the outside internet. PPv2 support was
325 updated based on HAProxy spec change in May 2014.
327 JH/02 Add ${listextract {number}{list}{success}{fail}}.
329 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
330 Properly escape header and check for NULL return.
332 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
335 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
337 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
338 characters in header names, implemented as a verify condition.
339 Contributed by Michael Fischer v. Mollard.
341 TL/05 Rename SPF condition results err_perm and err_temp to standardized
342 results permerror and temperror. Previous values are deprecated but
343 still accepted. In a future release, err_perm and err_temp will be
344 completely removed, which will be a backward incompatibility if the
345 ACL tests for either of these two old results. Patch contributed by
346 user bes-internal on the mailing list.
348 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
350 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
351 selectors, in both main and reject logs.
353 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
356 JH/07 Add malware type "sock" for talking to simple daemon.
358 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
360 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
361 routers/transports under cutthrough routing.
363 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
364 numbers. Touch up "bool" conditional to keep the same definition.
366 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
368 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
370 JH/12 Expand items in router/transport headers_add or headers_remove lists
371 individually rather than the list as a whole. Bug 1452.
373 Required for reasonable handling of multiple headers_ options when
374 they may be empty; requires that headers_remove items with embedded
375 colons must have them doubled (or the list-separator changed).
377 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
378 view the policy declared in the DMARC record. Currently, $dmarc_status
379 is a combined value of both the record presence and the result of the
382 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
384 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
385 dnslookup router and the smtp transport (applying to the forward
388 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
389 of ldap servers used for a specific lookup. Patch provided by Heiko
392 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
393 New variable $lookup_dnssec_authenticated for observability.
395 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
396 Patch submitted by Lars Timman.
398 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
400 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
401 Requires trusted mode and valid format message id, aborts otherwise.
402 Patch contributed by Heiko Schlichting.
404 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
405 certextract with support for various fields. Bug 1358.
407 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
408 is requested by default, modifiable by smtp transport option
411 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
412 operate on certificate variables to give certificate fingerprints
413 Also new ${sha256:cert_variable}.
415 JH/23 The PRDR feature is moved from being Experimental into the mainline.
417 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
418 Christian Aistleitner.
420 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
422 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
423 file. Patch from Wolfgang Breyha.
425 JH/25 Expand the coverage of the delivery $host and $host_address to
426 client authenticators run in verify callout. Bug 1476.
428 JH/26 Port service names are now accepted for tls_on_connect_ports, to
429 align with daemon_smtp_ports. Bug 72.
431 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
432 support and error reporting did not work properly.
434 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
435 and is readable. Patch from Andrew Colin Kissa.
437 TL/14 Enhance documentation of ${run expansion and how it parses the
438 commandline after expansion, particularly in the case when an
439 unquoted variable expansion results in an empty value.
441 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
443 PP/02 Fix internal collision of T_APL on systems which support RFC3123
444 by renaming away from it. Addresses GH issue 15, reported by
447 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
449 TL/15 SECURITY: prevent double expansion in math comparison functions
450 (can expand unsanitized data). Not remotely exploitable.
457 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
459 PP/02 Make -n do something, by making it not do something.
460 When combined with -bP, the name of an option is not output.
462 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
465 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
466 $sender_host_name and config options to manage this, and basic check
469 PP/05 DSCP support for outbound connections and control modifier for inbound.
471 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
472 (Only plugin which currently uses this is kerberos4, which nobody should
473 be using, but we should make it available and other future plugins might
474 conceivably use it, even though it would break NAT; stuff *should* be
475 using channel bindings instead).
477 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
478 name; added for Sendmail compatibility; requires admin caller.
479 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
480 just ignore it); requires trusted caller.
481 Also parse but ignore: -Ac -Am -X<logfile>
484 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
486 TL/02 Add +smtp_confirmation as a default logging option.
488 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
489 Patch by Magnus Holmgren from 2007-02-20.
491 TL/04 Bugzilla 1281 - Spec typo.
492 Bugzilla 1283 - Spec typo.
493 Bugzilla 1290 - Spec grammar fixes.
495 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
497 TL/06 Add Experimental DMARC support using libopendmarc libraries.
499 TL/07 Fix an out of order global option causing a segfault. Reported to dev
500 mailing list by by Dmitry Isaikin.
502 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
504 JH/02 Support "G" suffix to numbers in ${if comparisons.
506 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
508 NM/01 Bugzilla 1197 - Spec typo
509 Bugzilla 1196 - Spec examples corrections
511 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
513 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
514 gnutls_enable_pkcs11, but renamed to more accurately indicate its
517 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
518 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
520 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
521 "acl {{name}{arg}...}", and optional args on acl condition
524 JH/05 Permit multiple router/transport headers_add/remove lines.
526 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
528 JH/07 Avoid using a waiting database for a single-message-only transport.
529 Performance patch from Paul Fisher. Bugzilla 1262.
531 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
534 JH/09 Add $headers_added variable, with content from use of ACL modifier
535 add_header (but not yet added to the message). Bugzilla 199.
537 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
538 Pulled from Bugzilla 817 by Wolfgang Breyha.
540 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
542 (nb: this is the same fix as in Exim 4.80.1)
544 JH/11 Add A= logging on delivery lines, and a client_set_id option on
547 JH/12 Add optional authenticated_sender logging to A= and a log_selector
550 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
552 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
553 advertise SMTP AUTH mechanism to us, instead of a generic
554 protocol violation error. Also, make Exim more robust to bad
555 data from the Dovecot auth socket.
557 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
559 When a queue runner is handling a message, Exim first routes the
560 recipient addresses, during which it prunes them based on the retry
561 hints database. After that it attempts to deliver the message to
562 any remaining recipients. It then updates the hints database using
565 So if a recipient address works intermittently, it can get repeatedly
566 deferred at routing time. The retry hints record remains fresh so the
567 address never reaches the final cutoff time.
569 This is a fairly common occurrence when a user is bumping up against
570 their storage quota. Exim had some logic in its local delivery code
571 to deal with this. However it did not apply to per-recipient defers
572 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
574 This change adds a proper retry rule check during routing so that the
575 final cutoff time is checked against the message's age. We only do
576 this check if there is an address retry record and there is not a
577 domain retry record; this implies that previous attempts to handle
578 the address had the retry_use_local_parts option turned on. We use
579 this as an approximation for the destination being like a local
580 delivery, as in LMTP.
582 I suspect this new check makes the old local delivery cutoff check
583 redundant, but I have not verified this so I left the code in place.
585 TF/02 Correct gecos expansion when From: is a prefix of the username.
587 Test 0254 submits a message to Exim with the header
591 When I ran the test suite under the user fanf2, Exim expanded
592 the header to contain my full name, whereas it should have added
593 a Resent-Sender: header. It erroneously treats any prefix of the
594 username as equal to the username.
596 This change corrects that bug.
598 GF/01 DCC debug and logging tidyup
599 Error conditions log to paniclog rather than rejectlog.
600 Debug lines prefixed by "DCC: " to remove any ambiguity.
602 TF/03 Avoid unnecessary rebuilds of lookup-related code.
604 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
605 Bug spotted by Jeremy Harris; was flawed since initial commit.
606 Would have resulted in OCSP responses post-SNI triggering an Exim
607 NULL dereference and crash.
609 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
611 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
612 Bug detection, analysis and fix by Samuel Thibault.
613 Bugzilla 1331, Debian bug #698092.
615 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
617 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
618 Server implementation by Todd Lyons, client by JH.
619 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
620 config variable "prdr_enable" controls whether the server
621 advertises the facility. If the client requests PRDR a new
622 acl_data_smtp_prdr ACL is called once for each recipient, after
623 the body content is received and before the acl_smtp_data ACL.
624 The client is controlled by bolth of: a hosts_try_prdr option
625 on the smtp transport, and the server advertisement.
626 Default client logging of deliveries and rejections involving
627 PRDR are flagged with the string "PRDR".
629 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
630 fclose(). Diagnosis by Todd Lyons.
632 PP/17 Update configure.default to handle IPv6 localhost better.
633 Patch by Alain Williams (plus minor tweaks).
636 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
637 This is now consistent with GnuTLS, and is now documented: the
638 previous undocumented portable approach to treating the option as
639 unset was to force an expansion failure. That still works, and
640 an empty string is now equivalent.
642 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
643 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
644 not performing validation itself.
646 PP/20 Added force_command boolean option to pipe transport.
647 Patch from Nick Koston, of cPanel Inc.
649 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
652 TF/04 Added udpsend ACL modifer and hexquote expansion operator
654 PP/21 Fix eximon continuous updating with timestamped log-files.
655 Broken in a format-string cleanup in 4.80, missed when I repaired the
656 other false fix of the same issue.
657 Report and fix from Heiko Schlichting.
660 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
661 Report from Prashanth Katuri.
663 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
664 It's SecureTransport, so affects any MacOS clients which use the
665 system-integrated TLS libraries, including email clients.
667 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
668 using a MIME ACL for non-SMTP local injection.
669 Report and assistance in diagnosis by Warren Baker.
671 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
673 JH/16 Fix comparisons for 64b. Bugzilla 1385.
675 TL/09 Add expansion variable $authenticated_fail_id to keep track of
676 last id that failed so it may be referenced in subsequent ACL's.
678 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
681 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
682 ldap library initialization, allowing self-signed CA's to be
683 used. Also properly sets require_cert option later in code by
684 using NULL (global ldap config) instead of ldap handle (per
685 session). Bug diagnosis and testing by alxgomz.
687 TL/12 Enhanced documentation in the ratelimit.pl script provided in
688 the src/util/ subdirectory.
690 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
691 renamed to Transport Post Delivery Action by Jeremy Harris, as
694 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
695 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
696 redis_servers = needs to be configured which will be used by the redis
697 lookup. Patch from Warren Baker, of The Packet Hub.
699 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
701 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
702 hostname or reverse DNS when processing a host list. Used suggestions
703 from multiple comments on this bug.
705 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
707 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
708 Missed a few lines, added it to make the runtest require no keyboard
711 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
712 contains upper case chars. Make router use caseful_local_part.
714 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
715 support when GnuTLS has been built with p11-kit.
721 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
723 This, or similar/improved, will also be change PP/11 of 4.82.
729 PP/01 Handle short writes when writing local log-files.
730 In practice, only affects FreeBSD (8 onwards).
731 Bugzilla 1053, with thanks to Dmitry Isaikin.
733 NM/01 Bugzilla 949 - Documentation tweak
735 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
738 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
740 PP/02 Implemented gsasl authenticator.
742 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
744 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
745 `pkg-config foo` for cflags/libs.
747 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
748 with rest of GSASL and with heimdal_gssapi.
750 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
751 `pkg-config foo` for cflags/libs for the TLS implementation.
753 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
754 properties get this fed in as external SSF. A number of robustness
755 and debugging improvements to the cyrus_sasl authenticator.
757 PP/08 cyrus_sasl server now expands the server_realm option.
759 PP/09 Bugzilla 1214 - Log authentication information in reject log.
760 Patch by Jeremy Harris.
762 PP/10 Added dbmjz lookup type.
764 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
766 PP/12 MAIL args handles TAB as well as SP, for better interop with
767 non-compliant senders.
768 Analysis and variant patch by Todd Lyons.
770 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
771 Bug report from Lars Müller <lars@samba.org> (via SUSE),
772 Patch from Dirk Mueller <dmueller@suse.com>
774 PP/13 tls_peerdn now print-escaped for spool files.
775 Observed some $tls_peerdn in wild which contained \n, which resulted
776 in spool file corruption.
778 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
779 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
780 or write after TLS renegotiation, which otherwise led to messages
783 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
784 as a tracking header (ie: a signed header comes before the signature).
785 Patch from Wolfgang Breyha.
787 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
788 comma-sep list; embedded commas doubled.
790 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
792 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
794 Report and patch from Dmitry Banschikov.
796 PP/16 Removed "dont_insert_empty_fragments" fron "openssl_options".
797 Removed SSL_clear() after SSL_new() which led to protocol negotiation
798 failures. We appear to now support TLS1.1+ with Exim.
800 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
801 lets Exim select keys and certificates based upon TLS SNI from client.
802 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
803 before an outbound SMTP session. New log_selector, +tls_sni.
805 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
806 NULL dereference. Report and patch from Alun Jones.
808 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
809 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
810 Not seeing resolver debug output on NetBSD, but suspect this is a
811 resolver implementation change.
813 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
814 Left warnings. Added "eximon gdb" invocation mode.
816 PP/21 Defaulting "accept_8bitmime" to true, not false.
818 PP/22 Added -bw for inetd wait mode support.
820 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
821 locate the relevant includes and libraries. Made this the default.
823 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
824 Bugzilla 1246, report and most of solution from Tomasz Kusy.
826 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
827 This may cause build issues on older platforms.
829 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
830 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
831 gnutls_require_mac & gnutls_require_protocols (no longer supported).
832 Added SNI support via GnuTLS too.
833 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
835 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
837 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
838 Applied second patch from Janne, implementing suggestion to default
839 multiple-strings-in-record handling to match SPF spec.
841 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
843 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
844 read-only, out of scope).
845 Patch from Wolfgang Breyha, report from Stuart Northfield.
847 PP/29 Fix three issues highlighted by clang analyser static analysis.
848 Only crash-plausible issue would require the Cambridge-specific
849 iplookup router and a misconfiguration.
850 Report from Marcin Mirosław.
852 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
854 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
855 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
856 As part of this, removing so much warning spew let me fix some minor
857 real issues in debug logging.
859 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
860 assignment on my part. Fixed.
862 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
863 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
864 Janne Snabb (who went above and beyond: thank you).
866 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
867 string otherwise requires a connection and a bunch more work and it's
868 relatively easy to get wrong. Should also expose TLS library linkage
871 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
872 64-bit ${eval} (JH/03).
874 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
875 GNU libc to support some of the 64-bit stuff, should not lead to
876 conflicts. Defined before os.h is pulled in, so if a given platform
877 needs to override this, it can.
879 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
880 protection layer was required, which is not implemented.
881 Bugzilla 1254, patch from Wolfgang Breyha.
883 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
884 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
885 tls_dhparam take prime identifiers. Also unbreak combination of
886 OpenSSL+DH_params+TLSSNI.
888 PP/39 Disable SSLv2 by default in OpenSSL support.
894 PP/01 Solaris build fix for Oracle's LDAP libraries.
895 Bugzilla 1109, patch from Stephen Usher.
897 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
899 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
902 TF/02 Fix a couple more cases where we did not log the error message
903 when unlink() failed. See also change 4.74-TF/03.
905 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
906 lock up or crash if it happened to be inside a call to libc when it
907 got a SIGUSR1 from exiwhat.
909 The SIGUSR1 handler appends the current process status to the process
910 log which is later printed by exiwhat. It used to use the general
911 purpose logging code to do this, but several functions it calls are
912 not safe for signals.
914 The new output code in the SIGUSR1 handler is specific to the process
915 log, and simple enough that it's easy to inspect for signal safety.
916 Removing some special cases also simplifies the general logging code.
917 Removing the spurious timestamps from the process log simplifies
920 TF/04 Improved ratelimit ACL condition.
922 The /noupdate option has been deprecated in favour of /readonly which
923 has clearer semantics. The /leaky, /strict, and /readonly update modes
924 are mutually exclusive. The update mode is no longer included in the
925 database key; it just determines when the database is updated. (This
926 means that when you upgrde Exim will forget old rate measurements.)
928 Exim now checks that the per_* options are used with an update mode that
929 makes sense for the current ACL. For example, when Exim is processing a
930 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
931 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
932 must specify per_mail/readonly. If you omit the update mode it defaults to
933 /leaky where that makes sense (as before) or /readonly where required.
935 The /noupdate option is now undocumented but still supported for
936 backwards compatibility. It is equivalent to /readonly except that in
937 ACLs where /readonly is required you may specify /leaky/noupdate or
938 /strict/noupdate which are treated the same as /readonly.
940 A useful new feature is the /count= option. This is a generalization
941 of the per_byte option, so that you can measure the throughput of other
942 aggregate values. For example, the per_byte option is now equivalent
943 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
945 The per_rcpt option has been generalized using the /count= mechanism
946 (though it's more complicated than the per_byte equivalence). When it is
947 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
948 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
949 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
950 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
951 Note that using per_rcpt with a non-readonly update mode in more than
952 one ACL will cause the recipients to be double-counted. (The per_mail
953 and per_byte options don't have this problem.)
955 The handling of very low rates has changed slightly. If the computed rate
956 is less than the event's count (usually one) then this event is the first
957 after a long gap. In this case the rate is set to the same as this event's
958 count, so that the first message of a spam run is counted properly.
960 The major new feature is a mechanism for counting the rate of unique
961 events. The new per_addr option counts the number of different
962 recipients that someone has sent messages to in the last time period. It
963 behaves like per_rcpt if all the recipient addresses are different, but
964 duplicate recipient addresses do not increase the measured rate. Like
965 the /count= option this is a general mechanism, so the per_addr option
966 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
967 example, measure the rate that a client uses different sender addresses
968 with the options per_mail/unique=$sender_address. There are further
969 details in the main documentation.
971 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
973 TF/06 Removed a few PCRE remnants.
975 TF/07 Automatically extract Exim's version number from tags in the git
976 repository when doing development or release builds.
978 PP/02 Raise smtp_cmd_buffer_size to 16kB.
979 Bugzilla 879. Patch from Paul Fisher.
981 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
982 Heavily based on revision 40f9a89a from Simon Arlott's tree.
985 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
987 PP/05 Variable $av_failed, true if the AV scanner deferred.
988 Bugzilla 1078. Patch from John Horne.
990 PP/06 Stop make process more reliably on build failure.
991 Bugzilla 1087. Patch from Heiko Schlittermann.
993 PP/07 Make maildir_use_size_file an _expandable_ boolean.
994 Bugzilla 1089. Patch from Heiko Schlittermann.
996 PP/08 Handle ${run} returning more data than OS pipe buffer size.
997 Bugzilla 1131. Patch from Holger Weiß.
999 PP/09 Handle IPv6 addresses with SPF.
1000 Bugzilla 860. Patch from Wolfgang Breyha.
1002 PP/10 GnuTLS: support TLS 1.2 & 1.1.
1004 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1007 PP/11 match_* no longer expand right-hand-side by default.
1008 New compile-time build option, EXPAND_LISTMATCH_RHS.
1009 New expansion conditions, "inlist", "inlisti".
1011 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
1013 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
1015 PP/14 fix log_write() format string regression from TF/03.
1016 Bugzilla 1152. Patch from Dmitry Isaikin.
1022 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
1024 PP/02 Harmonised TLS library version reporting; only show if debugging.
1025 Layout now matches that introduced for other libraries in 4.74 PP/03.
1027 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
1029 PP/04 New "dns_use_edns0" global option.
1031 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
1034 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
1035 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
1037 TK/01 Updated PolarSSL code to 0.14.2.
1038 Bugzilla 1097. Patch from Andreas Metzler.
1040 PP/07 Catch divide-by-zero in ${eval:...}.
1041 Fixes bugzilla 1102.
1043 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
1046 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
1047 format-string attack -- SECURITY: remote arbitrary code execution.
1049 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
1050 time unintentionally subject to list matching rules, letting the header
1051 cause arbitrary Exim lookups (of items which can occur in lists, *not*
1052 arbitrary string expansion). This allowed for information disclosure.
1054 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
1055 INT_MIN/-1 -- value coerced to INT_MAX.
1061 NM/01 Workround for PCRE version dependency in version reporting
1064 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
1065 This fixes portability to compilers other than gcc, notably
1066 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
1068 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
1069 makefiles for portability to HP-UX and POSIX correctness.
1071 PP/01 Permit LOOKUP_foo enabling on the make command-line.
1072 Also via indented variable definition in the Makefile.
1073 (Debugging by Oliver Heesakkers).
1075 PP/02 Restore caching of spamd results with expanded spamd_address.
1076 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
1078 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
1079 Improves build reliability. Fix from: Frank Elsner
1081 NM/02 Fix wide character breakage in the rfc2047 coding
1082 Fixes bug 1064. Patch from Andrey N. Oktyabrski
1084 NM/03 Allow underscore in dnslist lookups
1085 Fixes bug 1026. Patch from Graeme Fowler
1087 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
1088 Code patches from Adam Ciarcinski of NetBSD.
1090 NM/04 Fixed exiqgrep to cope with mailq missing size issue
1093 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
1094 is logged, to avoid truncation. Patch from John Horne.
1096 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
1097 Patch from Jakob Hirsch.
1099 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
1100 SQL string expansion failure details.
1101 Patch from Andrey Oktyabrski.
1103 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
1104 Patch from Simon Arlott.
1106 PP/09 New lookups functionality failed to compile on old gcc which rejects
1107 extern declarations in function scope.
1108 Patch from Oliver Fleischmann
1110 PP/10 Use sig_atomic_t for flags set from signal handlers.
1111 Check getgroups() return and improve debugging.
1112 Fixed developed for diagnosis in bug 927 (which turned out to be
1115 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
1116 Patch from Mark Zealey.
1118 PP/12 Bugzilla 1056: Improved spamd server selection.
1119 Patch from Mark Zealey.
1121 PP/13 Bugzilla 1086: Deal with maildir quota file races.
1122 Based on patch from Heiko Schlittermann.
1124 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
1125 Patch from Uwe Doering, sign-off by Michael Haardt.
1127 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
1128 variable declaration deep within a block. Bug and patch from
1131 PP/15 lookups-Makefile IRIX compatibilty coercion.
1133 PP/16 Make DISABLE_DKIM build knob functional.
1135 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
1136 Patch by Simon Arlott
1138 TF/03 Fix valgrind.h portability to C89 compilers that do not support
1139 variable argument macros. Our copy now differs from upstream.
1145 TF/01 Failure to get a lock on a hints database can have serious
1146 consequences so log it to the panic log.
1148 TF/02 Log LMTP confirmation messages in the same way as SMTP,
1149 controlled using the smtp_confirmation log selector.
1151 TF/03 Include the error message when we fail to unlink a spool file.
1153 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
1154 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
1155 for maintaining out-of-tree patches for some time.
1157 PP/01 Bugzilla 139: Documentation and portability issues.
1158 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
1159 Handle per-OS dynamic-module compilation flags.
1161 PP/02 Let /dev/null have normal permissions.
1162 The 4.73 fixes were a little too stringent and complained about the
1163 permissions on /dev/null. Exempt it from some checks.
1164 Reported by Andreas M. Kirchwitz.
1166 PP/03 Report version information for many libraries, including
1167 Exim version information for dynamically loaded libraries. Created
1168 version.h, now support a version extension string for distributors
1169 who patch heavily. Dynamic module ABI change.
1171 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
1172 privilege escalation vulnerability whereby the Exim run-time user
1173 can cause root to append content of the attacker's choosing to
1176 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
1179 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
1180 If dropping privileges for untrusted macros, we disabled normal logging
1181 on the basis that it would fail; for the Exim run-time user, this is not
1182 the case, and it resulted in successful deliveries going unlogged.
1183 Fixed. Reported by Andreas Metzler.
1189 PP/01 Date: & Message-Id: revert to normally being appended to a message,
1190 only prepend for the Resent-* case. Fixes regression introduced in
1191 Exim 4.70 by NM/22 for Bugzilla 607.
1193 PP/02 Include check_rfc2047_length in configure.default because we're seeing
1194 increasing numbers of administrators be bitten by this.
1196 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
1198 PP/03 Bugzilla 994: added openssl_options main configuration option.
1200 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
1202 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
1204 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
1206 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
1207 without a peer certificate, leading to a segfault because of an
1208 assumption that peers always have certificates. Be a little more
1209 paranoid. Problem reported by Martin Tscholak.
1211 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
1212 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
1213 NB: ClamAV planning to remove STREAM in "middle of 2010".
1214 CL also introduces -bmalware, various -d+acl logging additions and
1215 more caution in buffer sizes.
1217 PP/09 Implemented reverse_ip expansion operator.
1219 PP/10 Bugzilla 937: provide a "debug" ACL control.
1221 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
1223 PP/12 Bugzilla 973: Implement --version.
1225 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
1227 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
1229 PP/15 Bugzilla 816: support multiple condition rules on Routers.
1231 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
1232 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
1233 ignore trailing whitespace.
1235 JJ/02 prevent non-panic DKIM error from being sent to paniclog
1237 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
1240 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
1241 Notification from Dr Andrew Aitchison.
1243 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
1244 ExtendedDetectionInfo response format.
1245 Notification from John Horne.
1247 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
1250 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
1251 XSL and documented dependency on system catalogs, with examples of how
1254 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
1257 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
1258 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
1259 configuration file which is writeable by the Exim user or group.
1261 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
1262 of configuration files to cover files specified with the -C option if
1263 they are going to be used with root privileges, not just the default
1266 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
1267 option (effectively making it always true).
1269 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
1270 files to be used while preserving root privileges.
1272 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
1273 that rogue child processes cannot use them.
1275 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
1276 run-time user, instead of root.
1278 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
1279 Exim run-time user without dropping privileges.
1281 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
1282 result string, instead of calling string_vformat() twice with the same
1285 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
1286 for other users. Others should always drop root privileges if they use
1287 -C on the command line, even for a whitelisted configure file.
1289 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
1291 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
1297 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
1298 $data_path, and $header_path variables; fixed documentation bugs and
1301 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
1302 exipick to access non-standard spools, including the "frozen" queue
1305 NM/01 Bugzilla 965: Support mysql stored procedures.
1306 Patch from Alain Williams
1308 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
1310 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
1311 Patch from Andreas Metzler
1313 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
1314 Patch from Kirill Miazine
1316 NM/05 Bugzilla 671: Added umask to procmail example.
1318 JJ/03 installed exipick 20100323.0, fixing doc bug
1320 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
1321 directory. Notification and patch from Dan Rosenberg.
1323 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
1325 TK/02 Improve log output when DKIM signing operation fails.
1327 MH/01 Treat the transport option dkim_domain as a colon separated
1328 list, not as a single string, and sign the message with each element,
1329 omitting multiple occurences of the same signer.
1331 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
1332 Bugzilla 985, 986. Patch by Simon Arlott
1334 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
1335 Patch by Simon Arlott
1337 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
1338 MBX locking. Notification from Dan Rosenberg.
1344 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
1346 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
1348 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
1350 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
1352 NM/04 Bugzilla 915: Flag broken perl installation during build.
1358 TK/01 Added patch by Johannes Berg that expands the main option
1359 "spamd_address" if it starts with a dollar sign.
1361 TK/02 Write list of recipients to X-Envelope-Sender header when building
1362 the mbox-format spool file for content scanning (suggested by Jakob
1365 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
1366 (http://www.dcc-servers.net/) support via dccifd. Activated by
1367 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
1369 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
1370 by Mark Daniel Reidel <mr@df.eu>.
1372 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
1373 When building exim an external PCRE library is now needed -
1374 PCRE is a system library on the majority of modern systems.
1375 See entry on PCRE_LIBS in EDITME file.
1377 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
1378 conversation. Added nologin parameter to request.
1379 Patch contributed by Kirill Miazine.
1381 TF/01 Do not log submission mode rewrites if they do not change the address.
1383 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
1385 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
1386 log files in place. Contributed by Roberto Lima.
1388 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
1390 TF/03 Bugzilla 615: When checking the local_parts router precondition
1391 after a local_part_suffix or local_part_prefix option, Exim now
1392 does not use the address's named list lookup cache, since this
1393 contains cached lookups for the whole local part.
1395 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
1396 Robert Millan. Documentation is in experimental-spec.txt.
1398 TF/04 Bugzilla 668: Fix parallel build (make -j).
1400 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
1402 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
1403 Patch provided by Jan Srzednicki.
1405 TF/05 Leading white space used to be stripped from $spam_report which
1406 wrecked the formatting. Now it is preserved.
1408 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
1409 that they are available at delivery time.
1411 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
1413 TF/08 TLS error reporting now respects the incoming_interface and
1414 incoming_port log selectors.
1416 TF/09 Produce a more useful error message if an SMTP transport's hosts
1417 setting expands to an empty string.
1419 NM/06 Bugzilla 744: EXPN did not work under TLS.
1420 Patch provided by Phil Pennock.
1422 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
1423 Patch provided by Richard Godbee.
1425 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
1426 acl_smtp_notquit, added index entry.
1428 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
1429 Patch provided by Eugene Bujak.
1431 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
1432 accept(). Patch provided by Maxim Dounin.
1434 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
1435 Patch provided by Phil Pennock.
1437 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
1439 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
1440 Patch provided by Brad "anomie" Jorsch.
1442 NM/14 Bugzilla 622: Added timeout setting to transport filter.
1443 Patch provided by Dean Brooks.
1445 TK/05 Add native DKIM support (does not depend on external libraries).
1447 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
1448 Patch provided by Graeme Fowler.
1450 NM/16 Bugzilla 851: Documentation example syntax fix.
1452 NM/17 Changed NOTICE file to remove references to embedded PCRE.
1454 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
1457 NM/19 Bugzilla 745: TLS version reporting.
1458 Patch provided by Phil Pennock.
1460 NM/20 Bugzilla 167: bool: condition support.
1461 Patch provided by Phil Pennock.
1463 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
1464 clients. Patch provided by Phil Pennock.
1466 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
1467 Patch provided by Brad "anomie" Jorsch.
1469 NM/23 Bugzilla 687: Fix misparses in eximstats.
1470 Patch provided by Heiko Schlittermann.
1472 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
1473 Patch provided by Heiko Schlittermann.
1475 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1476 plus update to original patch.
1478 NM/26 Bugzilla 799: Documentation correction for ratelimit.
1480 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
1481 Patch provided by David Brownlee.
1483 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
1485 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
1487 NM/30 Bugzilla 888: TLS documentation bugfixes.
1489 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
1491 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
1492 Unlike the original bugzilla I have changed all shell scripts in src tree.
1494 NM/33 Bugzilla 898: Transport filter timeout fix.
1495 Patch by Todd Rinaldo.
1497 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
1498 Patch by Serge Demonchaux.
1500 NM/35 Bugzilla 39: Base64 decode bug fixes.
1501 Patch by Jakob Hirsch.
1503 NM/36 Bugzilla 909: Correct connect() call in dcc code.
1505 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
1507 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
1509 NM/39 Bugzilla 911: Fixed MakeLinks build script.
1515 TK/01 Add preliminary DKIM support. Currently requires a forked version of
1516 ALT-N's libdkim that I have put here:
1517 http://duncanthrax.net/exim-experimental/
1519 Note to Michael Haardt: I had to rename some vars in sieve.c. They
1520 were called 'true' and it seems that C99 defines that as a reserved
1521 keyword to be used with 'bool' variable types. That means you could
1522 not include C99-style headers which use bools without triggering
1523 build errors in sieve.c.
1525 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
1526 as mailq or other aliases. Changed the --help handling significantly
1527 to do whats expected. exim_usage() emits usage/help information.
1529 SC/01 Added the -bylocaldomain option to eximstats.
1531 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
1533 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
1535 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
1541 PH/01 Another patch from the Sieve maintainer.
1543 PH/02 When an IPv6 address is converted to a string for single-key lookup
1544 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
1545 dots are used instead of colons so that keys in lsearch files need not
1546 contain colons. This was done some time before quoting was made available
1547 in lsearch files. However, iplsearch files do require colons in IPv6 keys
1548 (notated using the quote facility) so as to distinguish them from IPv4
1549 keys. This meant that lookups for IP addresses in host lists did not work
1550 for iplsearch lookups.
1552 This has been fixed by arranging for IPv6 addresses to be expressed with
1553 colons if the lookup type is iplsearch. This is not incompatible, because
1554 previously such lookups could never work.
1556 The situation is now rather anomolous, since one *can* have colons in
1557 ordinary lsearch keys. However, making the change in all cases is
1558 incompatible and would probably break a number of configurations.
1560 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
1563 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
1564 conversion specification without a maximum field width, thereby enabling
1565 a rogue spamd server to cause a buffer overflow. While nobody in their
1566 right mind would setup Exim to query an untrusted spamd server, an
1567 attacker that gains access to a server running spamd could potentially
1568 exploit this vulnerability to run arbitrary code as the Exim user.
1570 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
1571 $primary_hostname instead of what libspf2 thinks the hosts name is.
1573 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
1574 a directory entry by the name of the lookup key. Previously, if a
1575 symlink pointed to a non-existing file or a file in a directory that
1576 Exim lacked permissions to read, a lookup for a key matching that
1577 symlink would fail. Now it is enough that a matching directory entry
1578 exists, symlink or not. (Bugzilla 503.)
1580 PH/03 The body_linecount and body_zerocount variables are now exported in the
1583 PH/04 Added the $dnslist_matched variable.
1585 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
1586 This means they are set thereafter only if the connection becomes
1589 PH/06 Added the client_condition to authenticators so that some can be skipped
1590 by clients under certain conditions.
1592 PH/07 The error message for a badly-placed control=no_multiline_responses left
1593 "_responses" off the end of the name.
1595 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
1597 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
1598 (without spaces) instead of just copying the configuration text.
1600 PH/10 Added the /noupdate option to the ratelimit ACL condition.
1602 PH/11 Added $max_received_linelength.
1604 PH/12 Added +ignore_defer and +include_defer to host lists.
1606 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
1607 way in which PCRE > 7.0 is built.
1609 PH/14 Implemented queue_only_load_latch.
1611 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
1612 MAIL command. The effect was to mangle the value on 64-bit systems.
1614 PH/16 Another patch from the Sieve maintainer.
1616 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
1618 PH/18 If a system quota error occurred while trying to create the file for
1619 a maildir delivery, the message "Mailbox is full" was not appended to the
1620 bounce if the delivery eventually timed out. Change 4.67/27 below applied
1621 only to a quota excession during the actual writing of the file.
1623 PH/19 It seems that peer DN values may contain newlines (and other non-printing
1624 characters?) which causes problems in log lines. The DN values are now
1625 passed through string_printing() before being added to log lines.
1627 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
1628 and InterBase are left for another time.)
1630 PH/21 Added message_body_newlines option.
1632 PH/22 Guard against possible overflow in moan_check_errorcopy().
1634 PH/23 POSIX allows open() to be a macro; guard against that.
1636 PH/24 If the recipient of an error message contained an @ in the local part
1637 (suitably quoted, of course), incorrect values were put in $domain and
1638 $local_part during the evaluation of errors_copy.
1644 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
1645 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
1648 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
1649 issue a MAIL command.
1651 PH/02 In an ACL statement such as
1653 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
1655 if a client was not listed at all, or was listed with a value other than
1656 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
1657 the condition was not true (as it should be), so access was not denied.
1658 The bug was that the ! inversion was incorrectly passed on to the second
1659 item. This has been fixed.
1661 PH/03 Added additional dnslists conditions == and =& which are different from
1662 = and & when the dns lookup returns more than one IP address.
1664 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
1665 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
1667 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
1668 FSYNC, which compiles an option called disable_fsync that allows for
1669 bypassing fsync(). The documentation is heavily laced with warnings.
1671 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
1673 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
1674 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
1675 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
1676 including adding "make clean"; (3) Added -fPIC when compiling the test
1677 dynamically loaded module, to get rid of a warning.
1679 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
1680 message fails, move_frozen_messages = true and ignore_bounce_errors_after
1681 = 0s. The bug is otherwise harmless.
1683 PH/07 There was a bug in the dovecot authenticator such that the value of
1684 $auth1 could be overwritten, and so not correctly preserved, after a
1685 successful authentication. This usually meant that the value preserved by
1686 the server_setid option was incorrect.
1688 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
1690 PH/09 Installed PCRE release 7.0.
1692 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
1693 run for batched SMTP input. It is now run at the start of every message
1694 in the batch. While fixing this I discovered that the process information
1695 (output by running exiwhat) was not always getting set for -bs and -bS
1696 input. This is fixed, and it now also says "batched" for BSMTP.
1698 PH/11 Added control=no_pipelining.
1700 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
1701 patch, slightly modified), and move the expansion of helo_data till after
1702 the connection is made in the smtp transport (so it can use these
1705 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
1707 PH/14 Added log_selector = +pid.
1709 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
1711 PH/16 Add ${if forany and ${if forall.
1713 PH/17 Added dsn_from option to vary the From: line in DSNs.
1715 PH/18 Flush SMTP output before performing a callout, unless control =
1716 no_callout_flush is set.
1718 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
1719 was true (the default) a successful delivery failed to delete the retry
1720 item, thus causing premature timeout of the address. The bug is now
1723 PH/20 Added hosts_avoid_pipelining to the smtp transport.
1725 PH/21 Long custom messages for fakedefer and fakereject are now split up
1726 into multiline reponses in the same way that messages for "deny" and
1727 other ACL rejections are.
1729 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
1730 with slight modification.
1732 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
1733 draft, changing the syntax and factoring some duplicate code".
1735 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
1736 for deliveries of the second and subsequent messages over the same SMTP
1739 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
1740 ${reduce, with only minor "tidies".
1742 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
1744 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
1745 expansion side effects.
1747 PH/27 When a message times out after an over-quota error from an Exim-imposed
1748 quota, the bounce message says "mailbox is full". This message was not
1749 being given when it was a system quota that was exceeded. It now should
1752 MH/03 Made $recipients available in local_scan(). local_scan() already has
1753 better access to the recipient list through recipients_list[], but
1754 $recipients can be useful in postmaster-provided expansion strings.
1756 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
1757 in the case of a MAIL command with additional options following the
1758 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
1759 were accidentally chopped off.
1761 PH/29 SMTP synchronization checks are implemented when a command is read -
1762 there is a check that no more input is waiting when there shouldn't be
1763 any. However, for some commands, a delay in an ACL can mean that it is
1764 some time before the response is written. In this time, more input might
1765 arrive, invalidly. So now there are extra checks after an ACL has run for
1766 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
1767 pipelining has not been advertised.
1769 PH/30 MH's patch to allow iscntrl() characters to be list separators.
1771 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
1772 returned in the SMTP response when smtp_return_error_details was false.
1773 This has been fixed.
1775 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
1776 instead of the C I/O that was originally supplied, because problems were
1777 reported on Solaris.
1779 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
1780 Exim which did not show up earlier: it was assuming that a call to
1781 SSL_CTX_set_info_callback() might give an error value. In fact, there is
1782 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
1783 was a macro that became an assignment, so it seemed to work. This has
1784 changed to a proper function call with a void return, hence the compile
1785 error. Exim's code has been fixed.
1787 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
1790 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
1792 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
1794 PH/37 If a message is not accepted after it has had an id assigned (e.g.
1795 because it turns out to be too big or there is a timeout) there is no
1796 "Completed" line in the log. When some messages of this type were
1797 selected by exigrep, they were listed as "not completed". Others were
1798 picked up by some special patterns. I have improved the selection
1799 criteria to be more general.
1801 PH/38 The host_find_failed option in the manualroute router can now be set
1802 to "ignore", to completely ignore a host whose IP address cannot be
1803 found. If all hosts are ignored, the behaviour is controlled by the new
1804 host_all_ignored option.
1806 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
1807 homing or because of multiple MX records with /mx) generated more than
1808 one IP address, and the following item turned out to be the local host,
1809 all the secondary addresses of the first item were incorrectly removed
1810 from the list, along with the local host and any following hosts (which
1811 is what is supposed to happen).
1813 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
1814 whoever called Exim into the -H file. In the case of the daemon it was
1815 behaving confusingly. When first started, it used values for whoever
1816 started the daemon, but after a SIGHUP it used the Exim user (because it
1817 calls itself on a restart). I have changed the code so that it now always
1820 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
1821 message are rejected with the same error (e.g. no authentication or bad
1822 sender address), and a DATA command is nevertheless sent (as can happen
1823 with PIPELINING or a stupid MUA), the error message that was given to the
1824 RCPT commands is included in the rejection of the DATA command. This is
1825 intended to be helpful for MUAs that show only the final error to their
1828 PH/42 Another patch from the Sieve maintainer.
1830 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
1831 Eximstats - Fixed some broken HTML links and added missing column headers
1833 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
1834 columns for Rejects, Temp Rejects, Ham, and Spam rows.
1836 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
1838 PH/43 Yet another patch from the Sieve maintainer.
1840 PH/44 I found a way to check for a TCP/IP connection going away before sending
1841 the response to the final '.' that terminates a message, but only in the
1842 case where the client has not sent further data following the '.'
1843 (unfortunately, this is allowed). However, in many cases there won't be
1844 any further data because there won't be any more messages to send. A call
1845 to select() can be used: if it shows that the input is "ready", there is
1846 either input waiting, or the socket has been closed. An attempt to read
1847 the next input character can distinguish the two cases. Previously, Exim
1848 would have sent an OK response which the client would never have see.
1849 This could lead to message repetition. This fix should cure that, at
1850 least in a lot of common cases.
1852 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
1853 advertised in response to EHLO.
1859 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
1860 fixed by 4.65/MH/01 (is this a record?) are fixed:
1862 (i) An empty string was always treated as zero by the numeric comparison
1863 operators. This behaviour has been restored.
1865 (ii) It is documented that the numeric comparison operators always treat
1866 their arguments as decimal numbers. This was broken in that numbers
1867 starting with 0 were being interpreted as octal.
1869 While fixing these problems I realized that there was another issue that
1870 hadn't been noticed. Values of message_size_limit (both the global option
1871 and the transport option) were treated as octal if they started with 0.
1872 The documentation was vague. These values are now always treated as
1873 decimal, and I will make that clear in the documentation.
1879 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
1880 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
1883 MH/01 Don't check that the operands of numeric comparison operators are
1884 integers when their expansion is in "skipping" mode (fixes bug
1885 introduced by 4.64-PH/07).
1887 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
1888 child addresses, Exim now panics and dies. Previously, because the count
1889 is held in a short int, deliveries were likely to be lost. As such a
1890 large number of recipients for a single message is ridiculous
1891 (performance will be very, very poor), I have chosen to impose a limit
1892 rather than extend the field.
1898 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
1899 leftover -K file (the existence of which was triggered by #402).
1900 While we were at it, introduced process PID as part of the -K
1901 filename. This should rule out race conditions when creating
1904 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
1905 processing considerably. Previous code took too long for large mails,
1906 triggering a timeout which in turn triggers #401.
1908 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
1909 in the DK code in transports.c. sendfile() is not really portable,
1910 hence the _LINUX specificness.
1912 TF/01 In the add_headers option to the mail command in an Exim filter,
1913 there was a bug that Exim would claim a syntax error in any
1914 header after the first one which had an odd number of characters
1917 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
1918 callout verification, Exim cached a "reject" for the entire domain. This
1919 is correct for most verifications, but it is not correct for a recipient
1920 verification with use_sender or use_postmaster set, because in that case
1921 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
1922 case of MAIL FROM:<> rejection from other early rejections (e.g.
1923 rejection of HELO). When verifying a recipient using a non-null MAIL
1924 address, the cache is ignored if it shows MAIL FROM:<> rejection.
1925 Whatever the result of the callout, the value of the domain cache is
1926 left unchanged (for any other kind of callout, getting as far as trying
1927 RCPT means that the domain itself is ok).
1929 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
1932 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
1933 manifest itself as EPIPE rather than ECONNECT. When tidying away a
1934 session, the daemon ignores ECONNECT errors and logs others; it now
1935 ignores EPIPE as well.
1937 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
1938 (quoted-printable decoding).
1940 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
1941 later the small subsequent patch to fix an introduced bug.
1943 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
1945 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
1947 PH/08 An error is now given if message_size_limit is specified negative.
1949 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
1950 to be given (somewhat) arbitrary names.
1952 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
1955 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
1956 miscellaneous code fixes
1958 PH/10 Added the log_reject_target ACL modifier to specify where to log
1961 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
1962 hostname. This is wrong, because it relates to the incoming message (and
1963 probably the interface on which it is arriving) and not to the outgoing
1964 callout (which could be using a different interface). This has been
1965 changed to use the value of the helo_data option from the smtp transport
1966 instead - this is what is used when a message is actually being sent. If
1967 there is no remote transport (possible with a router that sets up host
1968 addresses), $smtp_active_hostname is used.
1970 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
1971 tweaks were necessary in order to get it to work (see also 21 below):
1972 (a) The code assumed that strncpy() returns a negative number on buffer
1973 overflow, which isn't the case. Replaced with Exim's string_format()
1975 (b) There were several signed/unsigned issues. I just did the minimum
1976 hacking in of casts. There is scope for a larger refactoring.
1977 (c) The code used strcasecmp() which is not a standard C function.
1978 Replaced with Exim's strcmpic() function.
1979 (d) The code set only $1; it now sets $auth1 as well.
1980 (e) A simple test gave the error "authentication client didn't specify
1981 service in request". It would seem that Dovecot has changed its
1982 interface. Fortunately there's a specification; I followed it and
1983 changed what the client sends and it appears to be working now.
1985 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
1988 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
1989 address A is aliased to B and C, where B exists and C does not. Without
1990 -v the output is "A verified" because verification stops after a
1991 successful redirection if more than one address is generated. However,
1992 with -v the child addresses are also verified. Exim was outputting "A
1993 failed to verify" and then showing the successful verification for C,
1994 with its parentage. It now outputs "B failed to verify", showing B's
1995 parentage before showing the successful verification of C.
1997 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
1998 look up a TXT record in a specific list after matching in a combined
2001 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2002 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2003 they consult the DNS. I had assumed they would set it the way they
2004 wanted; and indeed my experiments on Linux seem to show that in some
2005 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2006 To be on the safe side, however, I have now made the interface to
2007 host_find_byname() similar to host_find_bydns(), with an argument
2008 containing the DNS resolver options. The host_find_byname() function now
2009 sets these options at its start, just as host_find_bydns() does. The smtp
2010 transport options dns_qualify_single and dns_search_parents are passed to
2011 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
2012 of host_find_byname() use the default settings of RES_DEFNAMES
2013 (qualify_single) but not RES_DNSRCH (search_parents).
2015 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
2016 spool_read_header() do less string testing, by means of a preliminary
2017 switch on the second character of optional "-foo" lines. (This is
2018 overdue, caused by the large number of possibilities that now exist.
2019 Originally there were few.) While I was there, I also converted the
2020 str(n)cmp tests so they don't re-test the leading "-" and the first
2021 character, in the hope this might squeeze out yet more improvement.
2023 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
2024 flag allowing group syntax was set by the header_syntax check but not
2025 turned off, possible causing trouble later; (2) The flag was not being
2026 set at all for the header_verify test, causing "group"-style headers to
2027 be rejected. I have now set it in this case, and also caused header_
2028 verify to ignore an empty address taken from a group. While doing this, I
2029 came across some other cases where the code for allowing group syntax
2030 while scanning a header line wasn't quite right (mostly, not resetting
2031 the flag correctly in the right place). These bugs could have caused
2032 trouble for malformed header lines. I hope it is now all correct.
2034 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
2035 with the "reply" argument non-NULL. The code, however (which originally
2036 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
2037 but it didn't always do it. This confused somebody who was copying the
2038 code for some other use. I have removed all the tests.
2040 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
2041 feature that was used to support insecure browsers during the U.S. crypto
2042 embargo. It requires special client support, and Exim is probably the
2043 only MTA that supported it -- and would never use it because real RSA is
2044 always available. This code has been removed, because it had the bad
2045 effect of slowing Exim down by computing (never used) parameters for the
2046 RSA_EXPORT functionality.
2048 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
2049 authenticator to fail if there's a tab character in the incoming data
2050 (there should never be unless someone is messing about, as it's supposed
2051 to be base64-encoded). Also added, on Timo's advice, the "secured" option
2052 if the connection is using TLS or if the remote IP is the same as the
2053 local IP, and the "valid-client-cert option" if a client certificate has
2056 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
2057 authenticators. This can be used for authorization after authentication
2058 succeeds. (In the case of plaintext, it servers for both authentication
2061 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
2062 if any retry times were supplied.
2064 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
2065 connection, where there is no client IP address to check. In this
2066 situation, the verify now always succeeds.
2068 PH/25 Applied John Jetmore's -Mset patch.
2070 PH/26 Added -bem to be like -Mset, but loading a message from a file.
2072 PH/27 In a string expansion for a processed (not raw) header when multiple
2073 headers of the same name were present, leading whitespace was being
2074 removed from all of them, but trailing whitespace was being removed only
2075 from the last one. Now trailing whitespace is removed from each header
2076 before concatenation. Completely empty headers in a concatenation (as
2077 before) are ignored.
2079 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
2080 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
2082 PH/29 [Removed. This was a change that I later backed out, and forgot to
2083 correct the ChangeLog entry (that I had efficiently created) before
2084 committing the later change.]
2086 PH/30 Exim was sometimes attempting to deliver messages that had suffered
2087 address errors (4xx response to RCPT) over the same connection as other
2088 messages routed to the same hosts. Such deliveries are always "forced",
2089 so retry times are not inspected. This resulted in far too many retries
2090 for the affected addresses. The effect occurred only when there were more
2091 hosts than the hosts_max_try setting in the smtp transport when it had
2092 the 4xx errors. Those hosts that it had tried were not added to the list
2093 of hosts for which the message was waiting, so if all were tried, there
2094 was no problem. Two fixes have been applied:
2096 (i) If there are any address or message errors in an SMTP delivery, none
2097 of the hosts (tried or untried) are now added to the list of hosts
2098 for which the message is waiting, so the message should not be a
2099 candidate for sending over the same connection that was used for a
2100 successful delivery of some other message. This seems entirely
2101 reasonable: after all the message is NOT "waiting for some host".
2102 This is so "obvious" that I'm not sure why it wasn't done
2103 previously. Hope I haven't missed anything, but it can't do any
2104 harm, as the worst effect is to miss an optimization.
2106 (ii) If, despite (i), such a delivery is accidentally attempted, the
2107 routing retry time is respected, so at least it doesn't keep
2108 hammering the server.
2110 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
2111 in ${readsocket because some servers need this prod.
2113 PH/32 Added some extra debug output when updating a wait-xxx database.
2115 PH/33 The hint "could be header name not terminated by colon", which has been
2116 given for certain expansion errors for a long time, was not being given
2117 for the ${if def:h_colon_omitted{... case.
2119 PH/34 The spec says: "With one important exception, whenever a domain list is
2120 being scanned, $domain contains the subject domain." There was at least
2121 one case where this was not true.
2123 PH/35 The error "getsockname() failed: connection reset by peer" was being
2124 written to the panic log as well as the main log, but it isn't really
2125 panic-worthy as it just means the connection died rather early on. I have
2126 removed the panic log writing for the ECONNRESET error when getsockname()
2129 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
2130 runs only) independently of the message's sender address. This meant
2131 that, if the 4xx error was in fact related to the sender, a different
2132 message to the same recipient with a different sender could confuse
2133 things. In particualar, this can happen when sending to a greylisting
2134 server, but other circumstances could also provoke similar problems.
2135 I have changed the default so that the retry time for these errors is now
2136 based a combination of the sender and recipient addresses. This change
2137 can be overridden by setting address_retry_include_sender=false in the
2140 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
2141 remote server are returned as part of bounce messages. This was not
2142 happening for LMTP over a pipe (the lmtp transport), but now it is the
2143 same for both kinds of LMTP.
2145 PH/38 Despite being documented as not happening, Exim was rewriting addresses
2146 in header lines that were in fact CNAMEs. This is no longer the case.
2148 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
2149 and queue runs started by the daemon processed all messages. This has
2150 been fixed so that -R and -S can now usefully be given with -q<time>.
2152 PH/40 Import PCRE release 6.7 (fixes some bugs).
2154 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
2156 PH/42 Give an error if -q is specified more than once.
2158 PH/43 Renamed the variables $interface_address and $interface_port as
2159 $received_ip_address and $received_port, to make it clear that these
2160 values apply to message reception, and not to the outgoing interface when
2161 a message is delivered. (The old names remain recognized, of course.)
2163 PH/44 There was no timeout on the connect() call when using a Unix domain
2164 socket in the ${readsocket expansion. There now is.
2166 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
2167 be meaningful with "accept".
2169 SC/01 Eximstats V1.43
2170 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
2172 SC/02 Eximstats V1.44
2173 Use a glob alias rather than an array ref in the generated
2174 parser. This improves both readability and performance.
2176 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
2177 Collect SpamAssassin and rejection statistics.
2178 Don't display local sender or destination tables unless
2179 there is data to show.
2180 Added average volumes into the top table text output.
2182 SC/04 Eximstats V1.46
2183 Collect data on the number of addresses (recipients)
2184 as well as the number of messages.
2186 SC/05 Eximstats V1.47
2187 Added 'Message too big' to the list of mail rejection
2188 reasons (thanks to Marco Gaiarin).
2190 SC/06 Eximstats V1.48
2191 Mainlog lines which have GMT offsets and are too short to
2192 have a flag are now skipped.
2194 SC/07 Eximstats V1.49 (Alain Williams)
2195 Added the -emptyok flag.
2197 SC/08 Eximstats V1.50
2198 Fixes for obtaining the IP address from reject messages.
2200 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
2201 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
2202 whitesspace changes from 4.64-PH/27
2204 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
2207 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
2208 are found, allow negative numbers in numeric criteria)
2210 JJ/06 exipick.20061117.2, added new $message_body_missing variable
2212 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
2213 to match changes made in 4.64-PH/43
2215 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
2217 PH/47 Put in an explicit test for a DNS lookup of an address record where the
2218 "domain" is actually an IP address, and force a failure. This locks out
2219 those revolvers/nameservers that support "A-for-A" lookups, in
2220 contravention of the specifications.
2222 PH/48 When a host name was looked up from an IP address, and the subsequent
2223 forward lookup of the name timed out, the host name was left in
2224 $sender_host_name, contrary to the specification.
2226 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
2227 restricted to single-key lookups, Exim was not diagnosing an error if
2228 * or *@ was used with a query-style lookup.
2230 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
2232 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
2233 long ago, but noone interested enough thought of it. Let's just say that
2234 the "1.1" means that there are some new functions that weren't there at
2235 some point in the past.
2237 PH/51 Error processing for expansion failure of helo_data from an smtp
2238 transport during callout processing was broken.
2240 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
2241 tested/used via the -bh/-bhc/-bs options.
2243 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
2244 bug, fixed in subsequent PCRE releases).
2246 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
2247 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
2249 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
2255 SC/01 Use a glob alias rather than an array ref in eximstats generated
2256 parser. This improves both readability and performance.
2258 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
2259 Don't display local sender or destination tables in eximstats unless
2260 there is data to show.
2261 Added average volumes into the eximstats top table text output.
2263 SC/03 Collect data on the number of addresses (recipients) as well
2264 as the number of messages in eximstats.
2266 TF/01 Correct an error in the documentation for the redirect router. Exim
2267 does (usually) call initgroups() when daemonizing.
2269 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
2270 with consistent privilege compared to when running as a daemon.
2272 TF/03 Note in the spec that $authenticated_id is not set for local
2273 submissions from trusted users.
2275 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
2276 Thanks to Dean Brooks <dean@iglou.com> for the patch.
2278 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
2279 by adding some example configuration directives to the default
2280 configuration file. A little bit of work is required to uncomment the
2281 directives and define how usernames and passwords are checked, but
2282 there is now a framework to start from.
2284 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
2285 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
2286 without this. I don't know how relevant this is to other LDAP libraries.
2288 PH/02 Add the verb name to the "unknown ACL verb" error.
2290 PH/03 Magnus Holmgren's patch for filter_prepend_home.
2292 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
2294 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
2295 directory not expanded when it should be if an expanded home directory
2296 was set for the address (which is overridden by the transport).
2298 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
2301 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
2302 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
2303 because it is too late at that time, and has no effect.
2305 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
2306 security issue with \' (bugzilla #107). I could not use the
2307 PQescapeStringConn() function, because it needs a PGconn value as one of
2310 PH/08 When testing addresses using -bt, indicate those final addresses that
2311 are duplicates that would not cause an additional delivery. At least one
2312 person was confused, thinking that -bt output corresponded to deliveries.
2313 (Suppressing duplicates isn't a good idea as you lose the information
2314 about possibly different redirections that led to the duplicates.)
2316 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
2317 systems where poll() doesn't work, in particular OS X.
2319 PH/10 Added more information to debugging output for retry time not reached.
2321 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
2322 operations in malware.c.
2324 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
2327 PH/13 If write_rejectlog was set false when logging was sent to syslog with
2328 syslog_duplication set false, log lines that would normally be written
2329 both the the main log and to the reject log were not written to syslog at
2332 PH/14 In the default configuration, change the use of "message" in ACL warn
2333 statements to "add_header".
2335 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
2336 not followed by a command (e.g. "seen endif").
2338 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
2339 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
2342 PH/17 Added extra conditions to the default value of delay_warning_condition
2346 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
2347 { match{$h_precedence:}{(?i)bulk|list|junk} } \
2348 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
2351 The Auto-Submitted: and various List- headers are standardised, whereas I
2352 don't think Precedence: ever was.
2354 PH/18 Refactored debugging code in route_finduser() to show more information,
2355 in particular, the error code if getpwnam() issues one.
2357 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
2358 This is apparently needed in addition to the PH/07 change above to avoid
2359 any possible encoding problems.
2361 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
2362 but not after initializing Perl.
2364 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
2365 output them only if debugging. By default they are written stderr,
2366 apparently, which is not desirable.
2368 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
2371 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
2374 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
2376 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
2377 authenticated or an ident call has been made. Suppress the default
2378 values for $authenticated_id and $authenticated_sender (but permit -oMai
2379 and -oMas) when testing with -bh.
2381 PH/24 Re-jigged the order of the tests in the default configuration so that the
2382 tests for valid domains and recipients precede the DNS black list and CSA
2383 tests, on the grounds that those ones are more expensive.
2385 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
2386 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
2387 This bug exists in every version of Exim that I still have, right back to
2390 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
2391 However, an attempt to turn on case-sensitivity in a regex key by
2392 including (?-i) didn't work because the subject string was already
2393 lowercased, and the effects were non-intuitive. It turns out that a
2394 one-line patch can be used to allow (?-i) to work as expected.
2400 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
2401 other effects) broke the use of negated acl sub-conditions.
2403 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
2406 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
2407 "Deny" causes Exim to reject the incoming connection with a 554 error.
2408 Unfortunately, if there is a major crisis, such as a disk failure,
2409 tcp-wrappers gives "deny", whereas what one would like would be some
2410 kind of temporary error. A kludge has been added to help with this.
2411 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
2412 554 error is used if errno is still zero or contains ENOENT (which occurs
2413 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
2416 PH/03 Add -lutil to the default FreeBSD LIBS setting.
2418 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
2419 errors. Otherwise a message that provokes a temporary error (when other
2420 messages do not) can cause a whole host to time out.
2422 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
2423 addresses were routed directly to files or pipes from a redirect router.
2424 File deliveries just didn't batch; pipe deliveries might have suffered
2427 PH/06 A failure to get a lock for a hints database would erroneously always say
2428 "Failed to get write lock", even when it was really a read lock.
2430 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
2431 of 0600. This has been changed to use the value of the lockfile_mode
2432 option (which defaults to 0600).
2434 PH/08 Applied small patch from the Sieve maintainer.
2436 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
2437 folder from quota calculations, a direct delivery into this folder messed
2438 up the contents of the maildirsize file. This was because the regex was
2439 used only to exclude .Trash (or whatever) when the size of the mailbox
2440 was calculated. There was no check that a delivery was happening into an
2441 excluded directory. This bug has been fixed by ignoring all quota
2442 processing for deliveries into excluded directories.
2444 PH/10 Added the maildirfolder_create_regex option to appendfile.
2450 PH/01 The code for finding all the local interface addresses on a FreeBSD
2451 system running IPv6 was broken. This may well have applied to all BSD
2452 systems, as well as to others that have similar system calls. The broken
2453 code found IPv4 interfaces correctly, but gave incorrect values for the
2454 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
2455 that it would not match correctly against @[] and not recognize the IPv6
2458 PH/02 The ipliteral router was not recognizing addresses of the form user@
2459 [ipv6:....] because it didn't know about the "ipv6:" prefix.
2461 PH/03 Added disable_ipv6.
2463 PH/04 Changed $reply_address to use the raw form of the headers instead of the
2464 decoded form, because it is most often used to construct To: headers
2465 lines in autoreplies, and the decoded form may well be syntactically
2466 invalid. However, $reply_address has leading white space removed, and all
2467 newlines turned into spaces so that the autoreply transport does not
2470 PH/05 If group was specified without a user on a router, and no group or user
2471 was specified on a transport, the group from the router was ignored.
2473 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
2474 for visible compile-time settings that can be used to change these
2475 numbers, for those that want even more. Backwards compatibility with old
2476 spool files has been maintained. However, going back to a previous Exim
2477 release will lost any variables that are in spool files.
2479 PH/07 Two small changes when running in the test harness: increase delay when
2480 passing a TCP/IP connection to a new process, in case the original
2481 process has to generate a bounce, and remove special handling of
2482 127.0.0.2 (sic), which is no longer necessary.
2484 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
2485 be the same on different OS.
2487 PH/09 Moved a debug statement in filter processing to avoid a race problem when
2490 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
2491 whether --show-vars was specified or not
2493 JJ/02 exipick: Added support for new ACL variable spool format introduced
2496 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
2497 syntactically invalid From: or Reply-to: line, and a filter used this to
2498 generate an autoreply, and therefore failed to obtain an address for the
2499 autoreply, Exim could try to deliver to a non-existent relative file
2500 name, causing unrelated and misleading errors. What now happens is that
2501 it logs this as a hard delivery error, but does not attempt to create a
2504 PH/11 The exinext utility has a -C option for testing purposes, but although
2505 the given file was scanned by exinext itself; it wasn't being passed on
2506 when Exim was called.
2508 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
2509 an end-of-file indication when reading a command response.
2511 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
2512 compiled. In many other places in Exim, IPv6 addresses are always
2513 recognized, so I have changed this. It also means that IPv4 domain
2514 literals of the form [IPV4:n.n.n.n] are now always recognized.
2516 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
2517 used if the router is not running as root, for example, when verifying at
2518 ACL time, or when using -bh. The debugging output from this situation was
2519 non-existent - all you got was a failure to exec. I have made two
2522 (a) Failures to set uid/gid, the current directory, or a process leader
2523 in a subprocess such as that created by queryprogram now generate
2524 suitable debugging ouput when -d is set.
2526 (b) The queryprogram router detects when it is not running as root,
2527 outputs suitable debugging information if -d is set, and then runs
2528 the subprocess without attempting to change uid/gid.
2530 PH/15 Minor change to Makefile for building test_host (undocumented testing
2533 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
2534 additional section of a DNS packet that returns MX or SRV records.
2535 Instead, it always explicitly searches for A/AAAA records. This avoids
2536 major problems that occur when a DNS server includes only records of one
2537 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
2538 fixed another bug: if SRV records were looked up and the corresponding
2539 address records were *not* found in the additional section, the port
2540 values from the SRV records were lost.
2542 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
2543 using the correct key (the original address) when searching the retry
2544 rules in order to find which one to use for generating the retry hint.
2546 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
2547 adding the default one. Similarly, if it contains a Reply-To: header, the
2548 errors_reply_to option, if set, is not used.
2550 PH/19 When calculating a retry time, Exim used to measure the "time since
2551 failure" by looking at the "first failed" field in the retry record. Now
2552 it does not use this if it is later than than the arrival time of the
2553 message. Instead it uses the arrival time. This makes for better
2554 behaviour in cases where some deliveries succeed, thus re-setting the
2555 "first failed" field. An example is a quota failure for a huge message
2556 when small messages continue to be delivered. Without this change, the
2557 "time since failure" will always be short, possible causing more frequent
2558 delivery attempts for the huge message than are intended.
2559 [Note: This change was subsequently modified - see PH/04 for 4.62.]
2561 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
2562 $1, $2, $3) because the numerical variables can be reset during some
2563 expansion items (e.g. "match"), thereby losing the authentication data.
2565 PH/21 Make -bV show the size of off_t variables so that the test suite can
2566 decide whether to run tests for quotas > 2G.
2568 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
2569 mailbox_size, and mailbox_filecount in the appendfile transport. If a
2570 filecount value is greater than 2G or if a quota value is greater than 2G
2571 on a system where the size of off_t is not greater than 4, a panic error
2574 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
2575 never match. The debug and -bh output now contains an explicit error
2576 message indicating a malformed IPv4 address or mask.
2578 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
2579 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
2580 PH/23 above applies.
2582 PH/25 Do not write to syslog when running in the test harness. The only
2583 occasion when this arises is a failure to open the main or panic logs
2584 (for which there is an explicit test).
2586 PH/26 Added the /no_tell option to "control=freeze".
2588 PH/27 If a host name lookup failed very early in a connection, for example, if
2589 the IP address matched host_lookup and the reverse lookup yielded a name
2590 that did not have a forward lookup, an error message of the form "no IP
2591 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
2592 could be logged. Now it outputs the IP address instead of "NULL".
2594 PH/28 An enabling patch from MH: add new function child_open_exim2() which
2595 allows the sender and the authenticated sender to be set when
2596 submitting a message from within Exim. Since child_open_exim() is
2597 documented for local_scan(), the new function should be too.
2599 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
2600 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
2601 results in an empty string is now treated as unset.
2603 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
2605 PH/31 Added sender_verify_fail logging option.
2607 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
2608 needed by RFC 822 but not by RFC 2822 was commented out. I have now
2609 tidied the source and removed it altogether.
2611 PH/33 When a queue run was abandoned because the load average was too high, a
2612 log line was always written; now it is written only if the queue_run log
2613 selector is set. In addition, the log line for abandonment now contains
2614 information about the queue run such as the pid. This is always present
2615 in "start" and "stop" lines but was omitted from the "abandon" line.
2617 PH/34 Omit spaces between a header name and the colon in the error message that
2618 is given when verify = headers_syntax fails (if there are lots of them,
2619 the message gets confusing).
2621 PH/35 Change the default for dns_check_names_pattern to allow slashes within
2622 names, as there are now some PTR records that contain slashes. This check
2623 is only to protect against broken name servers that fall over on strange
2624 characters, so the fact that it applies to all lookups doesn't matter.
2626 PH/36 Now that the new test suite is complete, we can remove some of the
2627 special code in Exim that was needed for the old test suite. For example,
2628 sorting DNS records because real resolvers return them in an arbitrary
2629 order. The new test suite's fake resolver always returns records in the
2632 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
2633 bounces) except when queue_only is set, to avoid logging races between
2634 the different processes.
2636 PH/38 Panic-die if .include specifies a non-absolute path.
2638 PH/39 A tweak to the "H" retry rule from its user.
2640 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
2641 a label. They prevented compilation on older perls.
2643 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
2644 a warning to be raised on newish perls.
2646 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
2647 on queue. Changes to match documented behaviour of showing count of
2648 messages matching specified criteria.
2650 PH/40 Changed the default ident timeout from 30s to 5s.
2652 PH/41 Added support for the use of login_cap features, on those BSD systems
2653 that have them, for controlling the resources used by pipe deliveries.
2655 PH/42 The content-scanning code uses fopen() to create files in which to put
2656 message data. Previously it was not paying any attention to the mode of
2657 the files. Exim runs with umask(0) because the rest of the code creates
2658 files with open(), and sets the required mode explicitly. Thus, these
2659 files were ending up world-writeable. This was not a big issue, because,
2660 being within the spool directory, they were not world-accessible. I have
2661 created a function called modefopen, which takes an additional mode
2662 argument. It sets umask(777), creates the file, chmods it to the required
2663 mode, then resets the umask. All the relevant calls to fopen() in the
2664 content scanning code have been changed to use this function.
2666 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
2667 to 24 hours. This avoids potential overflow problems when processing G
2668 and H retry rules. I suspect nobody ever tinkers with this value.
2670 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
2672 PH/45 When the plaintext authenticator is running as a client, the server's
2673 challenges are checked to ensure they are valid base64 strings. By
2674 default, the authentication attempt is cancelled if an invalid string is
2675 received. Setting client_ignore_invalid_base64 true ignores these errors.
2676 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
2677 they are received. Thus, the responses can be made to depend on the
2678 challenges. If an invalid string is ignored, an empty string is placed in
2681 PH/46 Messages that are created by the autoreply transport now contains a
2682 References: header, in accordance with RFCs 2822 and 3834.
2684 PH/47 Added authenticated_sender_force to the smtp transport.
2686 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
2688 PH/49 Installed latest patch from the Sieve maintainer.
2690 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
2691 was also set, the appendfile transport was unnecessarily scanning a
2692 directory of message files (e.g. for maildir delivery) to find the count
2693 of files (along with the size), even though it did not need this
2694 information. It now does the scan only if it needs to find either the
2695 size of the count of files.
2697 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
2699 PH/52 Two bugs concerned with error handling when the smtp transport is
2702 (i) Exim was not creating retry information for temporary errors given
2703 for individual recipients after the DATA command when the smtp transport
2704 was used in LMTP mode. This meant that they could be retried too
2705 frequently, and not timed out correctly.
2707 (ii) Exim was setting the flag that allows error details to be returned
2708 for LMTP errors on RCPT commands, but not for LMTP errors for individual
2709 recipients that were returned after the DATA command.
2711 PH/53 This is related to PH/52, but is more general: for any failing address,
2712 when detailed error information was permitted to be returned to the
2713 sender, but the error was temporary, then after the final timeout, only
2714 "retry timeout exceeded" was returned. Now it returns the full error as
2715 well as "retry timeout exceeded".
2717 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
2718 do this, and (what is worse) MTAs that accept it.
2720 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
2721 will now be deprecated.
2723 PH/56 New os.c-cygwin from the Cygwin maintainer.
2725 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
2726 formats (previously only available in exim formats via -bpr, -bpru,
2727 and -bpra. Now also available in native and exiqgrep formats)
2729 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
2730 with very large, slow to parse queues
2732 JJ/08 exipick: added ! as generic prefix to negate any criteria format
2734 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
2736 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
2737 responses to authentication challenges, though it was showing the
2738 challenges; (ii) I've removed the CR characters from the debug output for
2741 PH/58 Allow for the insertion of a newline as well as a space when a string
2742 is turned into more than one encoded-word during RFC 2047 encoding. The
2743 Sieve code now uses this.
2745 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
2746 data_4xx, lost_connection, tls_required.
2748 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
2749 message was being sent as an SMTP response.
2751 PH/61 Add -l and -k options to exicyclog.
2753 PH/62 When verifying, if an address was redirected to one new address, so that
2754 verification continued, and the new address failed or deferred after
2755 having set something in $address_data, the value of $address_data was not
2756 passed back to the ACL. This was different to the case when no
2757 redirection occurred. The value is now passed back in both cases.
2759 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
2760 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
2761 use login_cap.h, so on its own it isn't the distinguishing feature. The
2762 new name refers directly to the setclassresources() function.
2764 PH/65 Added configuration files for NetBSD3.
2766 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
2768 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
2769 is preferred over IPv4.
2771 PH/68 The bounce_return_message and bounce_return_body options were not being
2772 honoured for bounces generated during the reception of non-SMTP messages.
2773 In particular, this applied to messages rejected by the ACL. This bug has
2774 been fixed. However, if bounce_return_message is true and bounce_return_
2775 body is false, the headers that are returned for a non-SMTP message
2776 include only those that have been read before the error was detected.
2777 (In the case of an ACL rejection, they have all been read.)
2779 PH/69 The HTML version of the specification is now built in a directory called
2780 spec_html instead of spec.html, because the latter looks like a path with
2781 a MIME-type, and this confuses some software.
2783 PH/70 Catch two compiler warnings in sieve.c.
2785 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
2786 function verify_get_ident() calls ip_connect() to connect a socket, but
2787 if the "connect()" function timed out, ip_connect() used to close the
2788 socket. However, verify_get_ident() also closes the socket later, and in
2789 between Exim writes to the log, which may get opened at this point. When
2790 the socket was closed in ip_connect(), the log could get the same file
2791 descriptor number as the socket. This naturally causes chaos. The fix is
2792 not to close the socket in ip_connect(); the socket should be closed by
2793 the function that creates it. There was only one place in the code where
2794 this was missing, in the iplookup router, which I don't think anybody now
2795 uses, but I've fixed it anyway.
2797 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
2798 well as to direct DNS lookups. Otherwise the handling of names in host
2799 lists is inconsistent and therefore confusing.
2805 PH/01 Two changes to the default runtime configuration:
2807 (1) Move the checks for relay_from_hosts and authenticated clients from
2808 after to before the (commented out) DNS black list checks.
2810 (2) Add control=submission to the relay_from_hosts and authenticated
2811 clients checks, on the grounds that messages accepted by these
2812 statements are most likely to be submissions.
2814 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
2816 (1) Generate an error if the third argument for the ${prvs expansion is
2819 (2) Treat a missing third argument of ${prvscheck as if it were an empty
2822 (3) Reset the variables that are obtained from the first argument of
2823 ${prvscheck and used in the second argument before leaving the code,
2824 because their memory is reclaimed, so using them afterwards may do
2827 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
2828 one (it's much easier than Tom thought :-).
2830 (5) Because of (4), we can now allow for the use of $prvscheck_result
2831 inside the third argument.
2833 PH/03 For some reason, the default setting of PATH when running a command from
2834 a pipe transport was just "/usr/bin". I have changed it to
2837 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
2838 anything to be listed in the output from -bV.
2840 PH/05 When a filter generated an autoreply, the entire To: header line was
2841 quoted in the delivery log line, like this:
2843 => >A.N.Other <ano@some.domain> <original@ddress> ...
2845 This has been changed so that it extracts the operative address. There
2846 may be more than one such address. If so, they are comma-separated, like
2849 => >ano@some.domain,ona@other.domain <original@ddress> ...
2851 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
2852 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
2853 not being looked up in the rDNS to get a host name, Exim was showing the
2854 IP address twice in Received: lines, even though the IP addresses were
2855 identical. For example:
2857 Received: from [1.2.3.4] (helo=[1.2.3.4])
2859 However, if the real host name was known, it was omitting the HELO data
2860 if it matched the actual IP address. This has been tidied up so that it
2861 doesn't show the same IP address twice.
2863 PH/07 When both +timestamp and +memory debugging was on, the value given by
2864 $tod_xxx expansions could be wrong, because the tod_stamp() function was
2865 called by the debug printing, thereby overwriting the timestamp buffer.
2866 Debugging no longer uses the tod_stamp() function when +timestamp is set.
2868 PH/08 When the original message was included in an autoreply transport, it
2869 always said "this is a copy of the message, including all the headers",
2870 even if body_only or headers_only was set. It now gives an appropriate
2873 PH/09 Applied a patch from the Sieve maintainer which:
2875 o fixes some comments
2876 o adds the (disabled) notify extension core
2877 o adds some debug output for the result of if/elsif tests
2878 o points to the current vacation draft in the documentation
2879 and documents the missing references header update
2883 o fixes a bug in processing the envelope test (when testing
2884 multiple envelope elements, the last element determinted the
2887 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
2888 Electronic Mail") by including:
2890 Auto-submitted: auto-generated
2892 in the messages that it generates (bounce messages and others, such as
2893 warnings). In the case of bounce messages for non-SMTP mesages, there was
2894 also a typo: it was using "Auto_submitted" (underscore instead of
2895 hyphen). Since every message generated by Exim is necessarily in response
2896 to another message, thes have all been changed to:
2898 Auto-Submitted: auto-replied
2900 in accordance with these statements in the RFC:
2902 The auto-replied keyword:
2904 - SHOULD be used on messages sent in direct response to another
2905 message by an automatic process,
2907 - MUST NOT be used on manually-generated messages,
2909 - MAY be used on Delivery Status Notifications (DSNs) and Message
2910 Disposition Notifications (MDNs),
2912 - MUST NOT be used on messages generated by automatic or periodic
2913 processes, except for messages which are automatic responses to
2916 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
2917 to the default Received: header definition.
2919 PH/12 Added log selector acl_warn_skipped (default on).
2921 PH/13 After a successful wildlsearch lookup, discard the values of numeric
2922 variables because (a) they are in the wrong storage pool and (b) even if
2923 they were copied, it wouldn't work properly because of the caching.
2925 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
2926 checking when decoding. Apparently there are clients that generate
2927 overlong encoded strings. Why am I not surprised?
2929 PH/15 If the first argument of "${if match_address" was not empty, but did not
2930 contain an "@" character, Exim crashed. Now it writes a panic log message
2931 and treats the condition as false.
2933 PH/16 In autoreply, treat an empty string for "once" the same as unset.
2935 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
2936 extension "envelope-auth". The code is finished and in agreement with
2937 other implementations, but there is no documentation so far and in fact,
2938 nobody wrote the draft yet. This extension is currently #undef'ed, thus
2939 not changing the active code.
2941 Print executed "if" and "elsif" statements when debugging is used. This
2942 helps a great deal to understand what a filter does.
2944 Document more things not specified clearly in RFC3028. I had all this
2945 sorted out, when out of a sudden new issues came to my mind. Oops."
2947 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
2950 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
2951 canonical form (as documented). However, after a host name lookup from
2952 the IP address, check_host() was doing a simple string comparison with
2953 addresses acquired from the DNS when checking that the found name did
2954 have the original IP as one of its addresses. Since any found IPv6
2955 addresses are likely to be in abbreviated form, the comparison could
2956 fail. Luckily, there already exists a function for doing the comparison
2957 by converting both addresses to binary, so now that is used instead of
2958 the text comparison.
2960 PH/20 There was another similar case to PH/19, when a complete host name was
2961 given in a host list; looking up its IP address could give an abbreviated
2962 form, whereas the current host's name might or might not be abbreviated.
2963 The same fix has been applied.
2969 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
2970 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
2973 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
2974 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
2976 PH/03 Typo: missing ".o" in src/pcre/Makefile.
2978 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
2979 header line, restrict the check to what is listed in RFCs 2369 and 2929.
2980 Also, for "Auto-Submitted", treat anything other than "no" as
2981 non-personal, in accordance with RFC 3834. (Previously it treated
2982 anything starting "auto-" as non-personal.)
2984 TF/01 The control=submission/name=... option had a problem with syntax
2985 errors if the name included a slash character. The /name= option
2986 now slurps the rest of the string, so it can include any characters
2987 but it must come last in the list of options (after /sender_retain
2990 PH/05 Some modifications to the interface to the fake nameserver for the new
2998 TK/01 Added the "success_on_redirect" address verification option. See
2999 NewStuff for rationale and an example.
3001 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
3003 PH/02 Patch to exigrep to allow it to work on syslog lines.
3005 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
3006 fread() to skip over the body file's header line, because in Cygwin the
3007 header line is locked and is inaccessible.
3009 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
3010 co-exist for some time) to make it clear that it is the Exim ID that is
3011 referenced, not the Message-ID: header line.
3013 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
3014 string_format() function, because snprintf() does not exist on all
3017 PH/06 The use of forbid_filter_existstest now also locks out the use of the
3018 ${stat: expansion item.
3020 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
3021 protocol synchronization error", to keep the pedants happy.
3023 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
3024 well as for IRIX systems, when gcc is being used. See the host.c source
3027 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
3029 PH/10 Named domain lists were not working if used in a queue_smtp_domains
3032 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
3033 transport and to the smtp transport in LMTP mode.
3035 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
3037 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
3038 run a filter in a subprocess. This could lead to confusion in subsequent
3039 lookups in the parent process. There should also be a search_tidyup() at
3040 the end of the subprocess.
3042 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
3043 only if the host matched helo_try_verify_hosts, which caused the
3044 verification to occur when the EHLO/HELO command was issued. The ACL just
3045 tested the remembered result. Now, if a previous verification attempt has
3046 not happened, "verify = helo" does it there and then.
3048 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
3050 TK/03 Fix log output including CR from clamd.
3052 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
3053 exist provoked a memory error which could cause a segfault.
3055 PH/15 Installed PCRE 6.2
3057 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
3059 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
3060 of the problem. Specifically, suggested +O2 rather than +O1 for the
3063 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
3065 PH/20 If a delivery was routed to a non-standard port by means of an SRV
3066 record, the port was not correctly logged when the outgoing_port log
3067 selector was set (it logged the transort's default port).
3069 PH/21 Added support for host-specific ports to manualroute, queryprogram,
3070 fallback_hosts, and "hosts" in the smtp transport.
3072 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
3073 host errors such as "Connection refused".
3075 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
3076 authentication with radiusclient 0.4.9:
3078 - Error returned from rc_read_config was caught wrongly
3079 - Username/password not passed on to radius server due to wrong length.
3081 The presumption is that some radiusclient API changes for 4.51/PH/17
3082 were not taken care of correctly. The code is still untested by me (my
3083 Linux distribution still has 0.3.2 of radiusclient), but it was
3084 contributed by a Radius user.
3086 PH/24 When doing a callout, the value of $domain wasn't set correctly when
3087 expanding the "port" option of the smtp transport.
3089 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
3090 while reading a MIME header. Thanks to Tom Hughes for a patch.
3092 PH/24 Include config.h inside local_scan.h so that configuration settings are
3095 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
3096 that in an ACL for RCPT (for example), you can examine exactly what was
3099 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
3100 commands, but it was not correctly comparing the address with the actual
3101 client host address. Thus, it would show the EHLO address in Received:
3102 header lines when this was not necessary.
3104 PH/27 Added the % operator to ${eval:}.
3106 PH/28 Exim tries to create and chdir to its spool directory when it starts;
3107 it should be ignoring failures (because with -C, for example, it has lost
3108 privilege). It wasn't ignoring creation failures other than "already
3111 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
3114 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
3115 because an input line was too long, either on its own, or by virtue of
3116 too many continuations, the temporary file was not being removed, and the
3117 return code was incorrect.
3119 PH/31 Missing "BOOL" in function definition in filtertest.c.
3121 PH/32 Applied Sieve patches from the maintainer.
3123 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
3125 PH/33 Added "verify = not_blind".
3127 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
3128 Local/Makefile (with some defaults set). These are used in built scripts
3129 such as exicyclog, but they have never been used in the exim_install
3130 script (though there are many overriding facilities there). I have
3131 arranged that the exim_install script now takes note of these two
3134 PH/35 Installed configuration files for Dragonfly.
3136 PH/36 When a locally submitted message by a trusted user did not contain a
3137 From: header, and the sender address was obtained from -f or from an SMTP
3138 MAIL command, and the trusted user did not use -F to supply a sender
3139 name, $originator_name was incorrectly used when constructing a From:
3140 header. Furthermore, $originator_name was used for submission mode
3141 messages from external hosts without From: headers in a similar way,
3142 which is clearly wrong.
3144 PH/37 Added control=suppress_local_fixups.
3146 PH/38 When log_selector = +received_sender was set, and the addition of the
3147 sender made the log line's construction buffer exactly full, or one byte
3148 less than full, an overflow happened when the terminating "\n" was
3151 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
3152 when the result of a list match is failure because a DNS lookup failed.
3154 PH/40 RM_COMMAND is now used in the building process.
3156 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
3157 the "build-* directories that it finds.
3159 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
3160 address in a domain literal was a prefix of an interface address.
3162 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
3163 when verifying a sender address, unless rewrite_headers is false.
3165 PH/44 Wrote a long comment about why errors_to addresses are verified as
3166 recipients, not senders.
3168 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
3169 the ratelimit ACL was added.
3171 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
3173 PH/46 Added extra information about PostgreSQL errors to the error string.
3175 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
3176 avoiding the need to install special zones in a real server. This is
3177 backwards compatible; if it can't find the fake resolver, it drops back.
3178 Thus, both old and new test suites can be run.
3180 TF/02 Added util/ratelimit.pl
3182 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
3183 clock is set back in time.
3185 TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
3186 Candler <B.Candler@pobox.com>.
3188 TF/05 The fix for PH/43 was not completely correct; widen_domains is always
3189 OK for addresses that are the result of redirections.
3191 PH/48 A number of further additions for the benefit of the new test suite,
3192 including a fake gethostbyname() that interfaces to the fake DNS resolver
3195 TF/06 The fix for widen_domains has also been applied to qualify_single and
3196 search_parents which are the other dnslookup options that can cause
3199 PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
3202 PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
3204 TF/07 Exim produced the error message "an SRV record indicated no SMTP
3205 service" if it encountered an MX record with an empty target hostname.
3206 The message is now "an MX or SRV record indicated no SMTP service".
3208 TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
3209 if the DNS of the sending site is misconfigured. This is quite a
3210 common situation. This change restores the behaviour of treating a
3211 helo verification defer as a failure.
3213 PH/51 If self=fail was set on a router, the bounce message did not include the
3214 actual error message.
3220 TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
3222 PH/01 When a transport filter timed out in a pipe delivery, and the pipe
3223 command itself ended in error, the underlying message about the transport
3224 filter timeout was being overwritten with the pipe command error. Now the
3225 underlying error message should be appended to the second error message.
3227 TK/01 Fix poll() being unavailable on Mac OSX 10.2.
3229 PH/02 Reduce the amount of output that "make" produces by default. Full output
3230 can still be requested.
3232 PH/03 The warning log line about a condition test deferring for a "warn" verb
3233 was being output only once per connection, rather than after each
3234 occurrence (because it was using the same function as for successful
3235 "warn" verbs). This seems wrong, so I have changed it.
3237 TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
3238 it should not have, which might have caused a crash in the right
3239 circumstances, but probably never did.
3241 PH/04 Installed a modified version of Tony Finch's patch to make submission
3242 mode fix the return path as well as the Sender: header line, and to
3243 add a /name= option so that you can make the user's friendly name appear
3246 TF/03 Added the control = fakedefer ACL modifier.
3248 TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
3249 Mark Lowes for thorough testing.
3251 TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
3253 TK/03 Merged latest SRS patch from Miles Wilton.
3255 PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
3256 with the definition in sysexits.h (which is #included earlier).
3257 Fortunately, Exim does not actually use EX_OK. The code used to try to
3258 preserve the sysexits.h value, by assumimg that macro definitions were
3259 scanned for macro replacements. I have been disabused of this notion,
3260 so now the code just undefines EX_OK before #including unistd.h.
3262 PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
3263 in the smtp transport. When a block could not be written in a single
3264 write() function, the timeout was being re-applied to each part-write.
3265 This seems wrong - if the receiver was accepting one byte at a time it
3266 would take for ever. The timeout is now adjusted when this happens. It
3267 doesn't have to be particularly precise.
3269 TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
3270 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
3272 PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
3273 without a domain if the check to <postmaster@domain> fails.
3275 SC/01 Eximstats: added -xls and the ability to specify output files
3276 (patch written by Frank Heydlauf).
3278 SC/02 Eximstats: use FileHandles for outputing results.
3280 SC/03 Eximstats: allow any combination of xls, txt, and html output.
3282 SC/04 Eximstats: fixed display of large numbers with -nvr option
3284 SC/05 Eximstats: fixed merging of reports with empty tables.
3286 SC/06 Eximstats: added the -include_original_destination flag
3288 SC/07 Eximstats: removed tabs and trailing whitespace.
3290 TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
3292 TK/06 MBOX spool code: Add real "From " MBOX separator line
3293 so the .eml file is really in mbox format (even though
3294 most programs do not really care). Patch from Alex Miller.
3296 TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
3297 The latter is generated from $received_to and is only set if the
3298 message has one envelope recipient. SA can use these headers,
3299 obviously out-of-the-box. Patch from Alex Miller.
3301 PH/08 The ${def test on a variable was returning false if the variable's
3302 value was "0", contrary to what the specification has always said!
3303 The result should be true unless the variable is empty.
3305 PH/09 The syntax error of a character other than { following "${if
3306 def:variable_name" (after optional whitespace) was not being diagnosed.
3307 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
3308 accidental colon was present, for example, could give incorrect results.
3310 PH/10 Tidied the code in a number of places where the st_size field of a stat()
3311 result is used (not including appendfile, where other changes are about
3314 PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
3315 This involved changing a lot of size variables from int to off_t. It
3316 should work with maildirs and everything.
3318 TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
3319 spamd dying while we are connected to it.
3321 TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
3324 PH/12 Applied Alex Kiernan's patch for the API change for the error callback
3325 function for BDB 4.3.
3327 PH/13 Changed auto_thaw such that it does not apply to bounce messages.
3329 PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
3330 the sources for PCRE have been re-arranged and more files are now
3333 PH/15 The code I had for printing potentially long long variables in PH/11
3334 above was not the best (it lost precision). The length of off_t variables
3335 is now inspected at build time, and an appropriate printing format (%ld
3336 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
3337 to be "long long int" or "long int". This is needed for the internal
3338 formatting function string_vformat().
3340 PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
3341 the configuration file to be ":syslog", then the script "guesses" where
3342 the logs files are, rather than using the compiled in default. In our
3343 case the guess is not the same as the compiled default, so the script
3344 suddenly stopped working when I started to use syslog. The patch checks
3345 to see if log_file_path is "". If so, it attempts to read it from exim
3346 with no configuration file to get the compiled in version, before it
3347 falls back to the previous guessing code."
3349 TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
3350 implementing BATV in an Exim configuration. See NewStuff for the gory
3353 PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
3354 Makefile that are specific to HP-UX.
3356 PH/18 If the "use_postmaster" option was set for a recipient callout together
3357 with the "random" option, the postmaster address was used as the MAIL
3358 FROM address for the random test, but not for the subsequent recipient
3359 test. It is now used for both.
3361 PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
3362 patch removes a few documentation additions to RFC 3028, because the
3363 latest draft now contains them. It adds the new en;ascii-case comparator
3364 and a new error check for 8bit text in MIME parts. Comparator and
3365 require names are now matched exactly. I enabled the subaddress
3366 extension, but it is not well tested yet (read: it works for me)."
3368 PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
3369 rework some of the code of TK/09 above to avoid the hardwired use of
3370 "%lld" and "long long". Replaced the call to snprintf() with a call to
3373 PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
3374 records point to non-existent hosts", "retry timeout exceeded", and
3375 "retry time not reached for any host after a long failure period".
3377 PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
3378 experimental DomainKeys support:
3380 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
3381 (2) On an error such as an illegally used "control", the wrong name for
3382 the control was given.
3384 These problems did NOT occur unless DomainKeys support was compiled.
3386 PH/23 Added daemon_startup_retries and daemon_startup_sleep.
3388 PH/24 Added ${if match_ip condition.
3390 PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
3391 databases so that it will be absolutely obvious if a crash occurs in the
3392 DB library. This is a regular occurrence (often caused by mis-matched
3395 PH/26 Insert a lot of missing (void) casts for functions such as chown(),
3396 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
3397 picked up on a user's system that detects such things. There doesn't seem
3398 to be a gcc warning option for this - only an attribute that has to be
3399 put on the function's prototype. It seems that in Fedora Core 4 they have
3400 set this on a number of new functions. No doubt there will be more in due
3403 PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
3404 specify a transport. However, if an address that was verified by such a
3405 router was the subject of a callout, Exim crashed because it tried to
3406 read the rcpt_include_affixes from the non-existent transport. Now it
3407 just assumes that the setting of that option is false. This bug was
3408 introduced by 4.51/PH/31.
3410 PH/28 Changed -d+all to exclude +memory, because that information is very
3411 rarely of interest, but it makes the output a lot bigger. People tend to
3412 do -d+all out of habit.
3414 PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
3415 code in os-type was giving problems when libc.so lives in lib64, like on
3418 PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
3419 aren't the modern standard, and it seems that some systems' include files
3420 don't always have them. Exim was already checking for some of the newer
3421 ones like T_AAAA, and defining it itself. I've added checks for all the
3422 record types that Exim uses.
3424 PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
3425 not automatically generating a new one, as it is supposed to. This
3426 prevented TLS from working. If the file did exist, but contained invalid
3427 data, a new version was generated, as expected. It was only the case of a
3428 non-existent file that was broken.
3430 TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
3431 with a change in libdomainkeys > 0.64.
3433 TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
3434 from DNS. If the selector record carries the flag, it now has
3435 precedence over the domain-wide flag.
3437 TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
3439 PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
3440 the use of a port name that isn't defined in /etc/services) occurred, the
3441 message was deferred as in a normal delivery, and thus remained on the
3442 spool, instead of being failed because of the mua_wrapper setting. This
3443 is now fixed, and I tidied up some of the mua_wrapper messages at the
3446 SC/08 Eximstats: whilst parsing the mainlog(s), store information about
3447 the messages in a hash of arrays rather than using individual hashes.
3448 This is a bit cleaner and results in dramatic memory savings, albeit
3449 at a slight CPU cost.
3451 SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
3452 as requested by Marc Sherman.
3454 SC/10 Eximstats: added histograms for user specified patterns as requested
3457 SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
3459 PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
3460 fopen() in the content-scanning modules that did not already have it.
3466 TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
3467 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
3469 TK/02 Fix ACL "control" statement not being available in MIME ACL.
3471 TK/03 Fix ACL "regex" condition not being available in MIME ACL.
3473 PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
3474 to test Sieve filters that use "vacation".
3476 PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
3477 that changes the way the GnuTLS parameters are stored in the cache file.
3478 The new format can be generated externally. For backward compatibility,
3479 if the data in the cache doesn't make sense, Exim assumes it has read an
3480 old-format file, and it generates new data and writes a new file. This
3481 means that you can't go back to an older release without removing the
3484 PH/03 A redirect router that has both "unseen" and "one_time" set does not
3485 work if there are any delivery delays because "one_time" forces the
3486 parent to be marked "delivered", so its unseen clone is never tried
3487 again. For this reason, Exim now forbids the simultaneous setting of
3490 PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
3491 redirected to themselves ("homonym" addresses). Read the long ChangeLog
3492 entry if you want to know the details. The fix, however, neglected to
3493 consider the case when local delivery batching is involved. The test for
3494 "previously delivered" was not happening when checking to see if an
3495 address could be batched with a previous (undelivered) one; under
3496 certain circumstances this could lead to multiple deliveries to the same
3499 PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
3500 in its include files, and this causes problems building Exim.
3502 PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
3503 header_syntax) but Exim was just ignoring anything given after a slash.
3504 In particular, this caused confusion with an attempt to use "verify =
3505 reverse_host_lookup/defer_ok". An error is now given when options are
3506 supplied for verify items that do not have them. (Maybe reverse_host_
3507 lookup should have a defer_ok option, but that's a different point.)
3509 PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
3510 defined by RFC 821) to 2048, because there were problems with some AUTH
3511 commands, and RFC 1869 says the size should be increased for extended
3512 SMTP commands that take arguments.
3514 PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
3517 PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
3518 "unknown" error; now it says that the functionality isn't in the binary.
3520 PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
3521 an address' error message when a string expansion fails (syntax or
3522 whatever). Otherwise the password may appear in the log. Following change
3523 PH/42 below, there is no longer a chance of it appearing in a bounce
3526 PH/11 Installed exipick version 20050225.0 from John Jetmore.
3528 PH/12 If the last host in a fallback_hosts list was multihomed, only the first
3529 of its addresses was ever tried. (Bugzilla bug #2.)
3531 PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
3532 the result incorrectly in the debug output. (It correctly added a newline
3533 to what was transported.)
3535 TF/01 Added $received_time.
3537 PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
3538 commented out examples of how to interface to a virus scanner and to
3539 SpamAssassin. Also added commented examples of av_scanner and
3540 spamd_address settings.
3542 PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
3543 and controls are allowed in which ACLs. There were a couple of minor
3544 errors. Some of the entries in the conditions table (which is a table of
3545 where they are NOT allowed) were getting very unwieldy; rewrote them as a
3546 negation of where the condition IS allowed.
3548 PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
3550 PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
3551 header file does not have a version number, so I've had to invent a new
3552 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
3553 API. The code is untested by me (my Linux distribution still has 0.3.2 of
3554 radiusclient), but it was contributed by a Radius user.
3556 PH/18 Installed Lars Mainka's patch for the support of CRL collections in
3557 files or directories, for OpenSSL.
3559 PH/19 When an Exim process that is running as root has to create an Exim log
3560 file, it does so in a subprocess that runs as exim:exim so as to get the
3561 ownership right at creation (otherwise, other Exim processes might see
3562 the file with the wrong ownership). There was no test for failure of this
3563 fork() call, which would lead to the process getting stuck as it waited
3564 for a non-existent subprocess. Forks do occasionally fail when resources
3565 run out. I reviewed all the other calls to fork(); they all seem to check
3568 PH/20 When checking for unexpected SMTP input at connect time (before writing
3569 the banner), Exim was not dealing correctly with a non-positive return
3570 from the read() function. If the client had disconnected by this time,
3571 the result was a log entry for a synchronization error with an empty
3572 string after "input=" when read() returned zero. If read() returned -1
3573 (an event I could not check), uninitialized data bytes were printed.
3574 There were reports of junk text (parts of files, etc) appearing after
3577 PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
3579 PH/22 Added support for macro redefinition, and (re)definition in between
3580 driver and ACL definitions.
3582 PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
3583 forgetting to use the resulting value; it was using the unexpanded value.
3585 PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
3586 hadn't been configured. The fix is from Juergen Kreileder, who
3587 understands it better than I do:
3589 "Here's what I see happening with three configured cyrus_sasl
3590 authenticators configured (plain, login, cram-md5):
3592 On startup auth_cyrus_sasl_init() gets called for each of these.
3593 This means three calls to sasl_listmech() without a specified mech_list.
3594 => SASL tests which mechs of all available mechs actually work
3595 => three warnings about OTP not working
3596 => the returned list contains: plain, login, cram-md5, digest-md5, ...
3598 With the patch, sasl_listmech() also gets called three times. But now
3599 SASL's mech_list option is set to the server_mech specified in the the
3600 authenticator. Or in other words, the answer from sasl_listmech()
3601 gets limited to just the mech you're testing for (which is different
3603 => the return list contains just 'plain' or 'login', 'cram-md5' or
3604 nothing depending on the value of ob->server_mech.
3606 I've just tested the patch: Authentication still works fine,
3607 unavailable mechs specified in the exim configuration are still
3608 caught, and the auth.log warnings about OTP are gone."
3610 PH/25 When debugging is enabled, the contents of the command line are added
3611 to the debugging output, even when log_selector=+arguments is not
3614 PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
3615 answer is "GNU", and only if the return is "GNU/something" is the answer
3618 PH/27 $acl_verify_message is now set immediately after the failure of a
3619 verification in an ACL, and so is available in subsequent modifiers. In
3620 particular, the message can be preserved by coding like this:
3622 warn !verify = sender
3623 set acl_m0 = $acl_verify_message
3625 Previously, $acl_verify_message was set only while expanding "message"
3626 and "log_message" when a very denied access.
3628 PH/28 Modified OS/os.c-Linux with
3630 -#ifndef OS_LOAD_AVERAGE
3631 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
3633 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
3634 nomenclature these days.)
3636 PH/29 Installed patch from the Sieve maintainer that adds the options
3637 sieve_useraddress and sieve_subaddress to the redirect router.
3639 PH/30 In these circumstances:
3640 . Two addresses routed to the same list of hosts;
3641 . First host does not offer TLS;
3642 . First host accepts first address;
3643 . First host gives temporary error to second address;
3644 . Second host offers TLS and a TLS session is established;
3645 . Second host accepts second address.
3646 Exim incorrectly logged both deliveries with the TLS parameters (cipher
3647 and peerdn, if requested) that were in fact used only for the second
3650 PH/31 When doing a callout as part of verifying an address, Exim was not paying
3651 attention to any local part prefix or suffix that was matched by the
3652 router that accepted the address. It now behaves in the same way as it
3653 does for delivery: the affixes are removed from the local part unless
3654 rcpt_include_affixes is set on the transport.
3656 PH/32 Add the sender address, as F=<...>, to the log line when logging a
3657 timeout during the DATA phase of an incoming message.
3659 PH/33 Sieve envelope tests were broken for match types other than :is. I have
3660 applied a patch sanctioned by the Sieve maintainer.
3662 PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
3663 the uid or gid is negative. A case of a negative gid caused this to be
3664 noticed. The fix allows for either to be negative.
3666 PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
3667 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
3670 PH/36 The change PH/12 above was broken. Fixed it.
3672 PH/37 Exim used to check for duplicate addresses in the middle of routing, on
3673 the grounds that routing the same address twice would always produce the
3674 same answer. This might have been true once, but it is certainly no
3675 longer true now. Routing a child address may depend on the previous
3676 routing that produced that child. Some complicated redirection strategies
3677 went wrong when messages had multiple recipients, and made Exim's
3678 behaviour dependent on the order in which the addresses were given.
3680 I have moved the duplicate checking until after the routing is complete.
3681 Exim scans the addresses that are assigned to local and remote
3682 transports, and removes any duplicates. This means that more work will be
3683 done, as duplicates will always all be routed, but duplicates are
3684 presumably rare, so I don't expect this is of any significance.
3686 For deliveries to pipes, files, and autoreplies, the duplicate checking
3687 still happens during the routing process, since they are not going to be
3690 PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
3691 It corrects a timeout issue with spamd. This is Ian's comment: "The
3692 background is that sometimes spamd either never reads data from a
3693 connection it has accepted, or it never writes response data. The exiscan
3694 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
3695 blindly assumes that writes won't block so it may never time out."
3697 PH/39 Allow G after quota size as well as K and M.
3699 PH/40 The value set for $authenticated_id in an authenticator may not contain
3700 binary zeroes or newlines because the value is written to log lines and
3701 to spool files. There was no check on this. Now the value is run through
3702 the string_printing() function so that such characters are converted to
3703 printable escape sequences.
3705 PH/41 $message_linecount is a new variable that contains the total number of
3706 lines in the message. Compare $body_linecount, which is the count for the
3709 PH/42 Exim no longer gives details of delivery errors for specific addresses in
3710 bounce and delay warning messages, except in certain special cases, which
3713 (a) An SMTP error message from a remote host;
3714 (b) A message specified in a :fail: redirection;
3715 (c) A message specified in a "fail" command in a system filter;
3716 (d) A message specified in a FAIL return from the queryprogram router;
3717 (e) A message specified by the cannot_route_message router option.
3719 In these cases only, Exim does include the error details in bounce and
3720 warning messages. There are also a few cases where bland messages such
3721 as "unrouteable address" or "local delivery error" are given.
3723 PH/43 $value is now also set for the "else" part of a ${run expansion.
3725 PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
3726 being worked on, but at least Exim now implements the latest version to
3729 PH/45 In a pipe transport, although a timeout while waiting for the pipe
3730 process to complete was treated as a delivery failure, a timeout while
3731 writing the message to the pipe was logged, but erroneously treated as a
3732 successful delivery. Such timeouts include transport filter timeouts. For
3733 consistency with the overall process timeout, these timeouts are now
3734 treated as errors, giving rise to delivery failures by default. However,
3735 there is now a new Boolean option for the pipe transport called
3736 timeout_defer, which, if set TRUE, converts the failures into defers for
3737 both kinds of timeout. A transport filter timeout is now identified in
3740 PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
3741 systems where "make" and "gmake" are different, calling "gmake" at top
3742 level broke things. I've arranged for the value of $(MAKE) to be passed
3743 from the Makefile to this script so that it can call the same version of
3747 A note about Exim versions 4.44 and 4.50
3748 ----------------------------------------
3750 Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
3751 changes of various kinds. As a consequence, a big documentation update was
3752 needed. This delayed the release for rather longer than seemed good, especially
3753 in the light of a couple of (minor) security issues. Therefore, the changes
3754 that fixed bugs were backported into 4.43, to create a 4.44 maintenance
3755 release. So 4.44 and 4.50 are in effect two different branches that both start
3758 I have left the 4.50 change log unchanged; it contains all the changes since
3759 4.43. The change log for 4.44 is below; many of its items are identical to
3760 those for 4.50. This seems to be the most sensible way to preserve the
3761 historical information.
3767 1. Minor wording change to the doc/README.SIEVE file.
3769 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
3770 computation of the current number of files was incorrect.
3772 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
3773 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
3776 4. Give more explanation in the error message when the command for a transport
3777 filter fails to execute.
3779 5. There are several places where Exim runs a non-Exim command in a
3780 subprocess. The SIGUSR1 signal should be disabled for these processes. This
3781 was being done only for the command run by the queryprogram router. It is
3782 now done for all such subprocesses. The other cases are: ${run, transport
3783 filters, and the commands run by the lmtp and pipe transports.
3785 6. Added CONFIGURE_GROUP build-time option.
3787 7. Some older OS have a limit of 256 on the maximum number of file
3788 descriptors. Exim was using setrlimit() to set 1000 as a large value
3789 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
3790 systems. I've change it so that if it can't get 1000, it tries for 256.
3792 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
3793 was an oversight, and furthermore, ever since the addition of extra
3794 controls (e.g. 4.43/32), the checks on when to allow different forms of
3795 "control" were broken. There should now be diagnostics for all cases when a
3796 control that does not make sense is encountered.
3798 9. Added the /retain_sender option to "control=submission".
3800 10. $recipients is now available in the predata ACL (oversight).
3802 11. Tidy the search cache before the fork to do a delivery from a message
3803 received from the command line. Otherwise the child will trigger a lookup
3804 failure and thereby defer the delivery if it tries to use (for example) a
3805 cached ldap connection that the parent has called unbind on.
3807 12. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
3808 of $address_data from the recipient verification was clobbered by the
3809 sender verification.
3811 13. The value of address_data from a sender verification is now available in
3812 $sender_address_data in subsequent conditions in the ACL statement.
3814 14. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
3816 15. Added a new option "connect=<time>" to callout options, to set a different
3819 16. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
3820 was its contents. (It was OK if the option was not defined at all.)
3822 17. A "Completed" log line is now written for messages that are removed from
3823 the spool by the -Mrm option.
3825 18. New variables $sender_verify_failure and $recipient_verify_failure contain
3826 information about exactly what failed.
3828 19. Added -dd to debug only the daemon process.
3830 20. Incorporated Michael Haardt's patch to ldap.c for improving the way it
3831 handles timeouts, both on the server side and network timeouts. Renamed the
3832 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
3834 21. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
3835 It is now set to "smtps".
3837 22. $host_address is now set to the target address during the checking of
3838 ignore_target_hosts.
3840 23. When checking ignore_target_hosts for an ipliteral router, no host name was
3841 being passed; this would have caused $sender_host_name to have been used if
3842 matching the list had actually called for a host name (not very likely,
3843 since this list is usually IP addresses). A host name is now passed as
3846 24. Changed the calls that set up the SIGCHLD handler in the daemon to use the
3847 code that specifies a non-restarting handler (typically sigaction() in
3848 modern systems) in an attempt to fix a rare and obscure crash bug.
3850 25. Narrowed the window for a race in the daemon that could cause it to ignore
3851 SIGCHLD signals. This is not a major problem, because they are used only to
3852 wake it up if nothing else does.
3854 26. A malformed maildirsize file could cause Exim to calculate negative values
3855 for the mailbox size or file count. Odd effects could occur as a result.
3856 The maildirsize information is now recalculated if the size or filecount
3859 27. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
3860 support for a long time. Removed HAVE_SYS_VFS_H.
3862 28. Installed the latest version of exipick from John Jetmore.
3864 29. In an address list, if the pattern was not a regular expression, an empty
3865 subject address (from a bounce message) matched only if the pattern was an
3866 empty string. Non-empty patterns were not even tested. This was the wrong
3867 because it is perfectly reasonable to use an empty address as part of a
3868 database query. An empty address is now tested by patterns that are
3869 lookups. However, all the other forms of pattern expect the subject to
3870 contain a local part and a domain, and therefore, for them, an empty
3871 address still always fails if the pattern is not itself empty.
3873 30. Exim went into a mad DNS loop when attempting to do a callout where the
3874 host was specified on an smtp transport, and looking it up yielded more
3875 than one IP address.
3877 31. Re-factored the code for checking spool and log partition space into a
3878 function that finds that data and another that does the check. The former
3879 is then used to implement four new variables: $spool_space, $log_space,
3880 $spool_inodes, and $log_inodes.
3882 32. The RFC2047 encoding function was originally intended for short strings
3883 such as real names; it was not keeping to the 75-character limit for
3884 encoded words that the RFC imposes. It now respects the limit, and
3885 generates multiple encoded words if necessary. To be on the safe side, I
3886 have increased the buffer size for the ${rfc2047: expansion operator from
3889 33. It is now permitted to omit both strings after an "if" condition; if the
3890 condition is true, the result is "true". As before, when the second string
3891 is omitted, a false condition yields an empty string. This makes it less
3892 cumbersome to write custom ACL and router conditions.
3894 34. Failure to deliver a bounce message always caused it to be frozen, even if
3895 there was an errors_to setting on the router. The errors_to setting is now
3898 35. If an IPv6 address is given for -bh or -bhc, it is now converted to the
3899 canonical form (fully expanded) before being placed in
3900 $sender_host_address.
3902 36. The table in the code that translates DNS record types into text (T_A to
3903 "A" for instance) was missing entries for NS and CNAME. It is just possible
3904 that this could have caused confusion if both these types were looked up
3905 for the same domain, because the text type is used as part of Exim's
3906 per-process caching. But the chance of anyone hitting this buglet seems
3909 37. The dnsdb lookup has been extended in a number of ways.
3911 (1) There is a new type, "zns", which walks up the domain tree until it
3912 finds some nameserver records. It should be used with care.
3914 (2) There is a new type, "mxh", which is like "mx" except that it returns
3915 just the host names, not the priorities.
3917 (3) It is now possible to give a list of domains (or IP addresses) to be
3918 looked up. The behaviour when one of the lookups defers can be
3919 controlled by a keyword.
3921 (4) It is now possible to specify the separator character for use when
3922 multiple records are returned.
3924 38. The dnslists ACL condition has been extended: it is now possible to supply
3925 a list of IP addresses and/or domains to be looked up in a particular DNS
3928 39. Added log_selector=+queue_time_overall.
3930 40. When running the queue in the test harness, wait just a tad after forking a
3931 delivery process, to get repeatability of debugging output.
3933 41. Include certificate and key file names in error message when GnuTLS fails
3934 to set them up, because the GnuTLS error message doesn't include the name
3935 of the failing file when there is a problem reading it.
3937 42. Allow both -bf and -bF in the same test run.
3939 43. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
3941 44. The "Exiscan patch" is now merged into the mainline Exim source.
3943 45. Sometimes the final signoff response after QUIT could fail to get
3944 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
3945 < 0 before doing a fflush(). This bug looks as though it goes back to the
3946 introduction of TLS in release 3.20, but "sometimes" must have been rare
3947 because the tests only now provoked it.
3949 46. Reset the locale to "C" after calling embedded Perl, in case it was changed
3950 (this can affect the format of dates).
3952 47. exim_tidydb, when checking for the continued existence of a message for
3953 which it has found a message-specific retry record, was not finding
3954 messages that were in split spool directories. Consequently, it was
3955 deleting retry records that should have stayed in existence.
3957 48. Steve fixed some bugs in eximstats.
3959 49. The SPA authentication driver was not abandoning authentication and moving
3960 on to the next authenticator when an expansion was forced to fail,
3961 contradicting the general specification for all authenticators. Instead it
3962 was generating a temporary error. It now behaves as specified.
3964 50. The default ordering of permitted cipher suites for GnuTLS was pessimal
3965 (the order specifies the preference for clients). The order is now AES256,
3966 AES128, 3DES, ARCFOUR128.
3968 51. Small patch to Sieve code - explicitly set From: when generating an
3971 52. Exim crashed if a remote delivery caused a very long error message to be
3972 recorded - for instance if somebody sent an entire SpamAssassin report back
3973 as a large number of 550 error lines. This bug was coincidentally fixed by
3974 increasing the size of one of Exim's internal buffers (big_buffer) that
3975 happened as part of the Exiscan merge. However, to be on the safe side, I
3976 have made the code more robust (and fixed the comments that describe what
3979 53. Now that there can be additional text after "Completed" in log lines (if
3980 the queue_time_overall log selector is set), a one-byte patch to exigrep
3981 was needed to allow it to recognize "Completed" as not the last thing in
3984 54. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
3985 patch that reportedly fixes this has been added. I am not expert enough to
3986 create a test for it. This is what the patch creator wrote:
3988 "I found a little strange behaviour of ldap code when working with
3989 Windows 2003 AD Domain, where users was placed in more than one
3990 Organization Units. When I tried to give exim partial DN, the exit code
3991 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
3992 But simultaneously result of request was absolutely normal ldap result,
3993 so I produce this patch..."
3995 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
3996 REFERENCE, so I have modified the code to exclude the patch when that macro
3999 55. Some experimental protocols are using DNS PTR records for new purposes. The
4000 keys for these records are domain names, not reversed IP addresses. The
4001 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
4002 leaves it alone. Component reversal etc. now happens only for IP addresses.
4005 56. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
4007 57. Double the size of the debug message buffer (to 2048) so that more of very
4008 long debug lines gets shown.
4010 58. The exicyclog utility now does better if the number of log files to keep
4011 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
4013 59. Two changes related to the smtp_active_hostname option:
4015 (1) $smtp_active_hostname is now available as a variable.
4016 (2) The default for smtp_banner uses $smtp_active_hostname instead
4017 of $primary_hostname.
4019 60. The host_aton() function is supposed to be passed a string that is known
4020 to be a valid IP address. However, in the case of IPv6 addresses, it was
4021 not checking this. This is a hostage to fortune. Exim now panics and dies
4022 if the condition is not met. A case was found where this could be provoked
4023 from a dnsdb PTR lookup with an IPv6 address that had more than 8
4024 components; fortuitously, this particular loophole had already been fixed
4025 by change 4.50/55 above.
4027 If there are any other similar loopholes, the new check in host_aton()
4028 itself should stop them being exploited. The report I received stated that
4029 data on the command line could provoke the exploit when Exim was running as
4030 exim, but did not say which command line option was involved. All I could
4031 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
4032 running as the user.
4035 61. There was a buffer overflow vulnerability in the SPA authentication code
4036 (which came originally from the Samba project). I have added a test to the
4037 spa_base64_to_bits() function which I hope fixes it.
4040 62. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
4041 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
4043 63. The daemon start-up calls getloadavg() while still root for those OS that
4044 need the first call to be done as root, but it missed one case: when
4045 deliver_queue_load_max is set with deliver_drop_privilege. This is
4046 necessary for the benefit of the queue runner, because there is no re-exec
4047 when deliver_drop_privilege is set.
4049 64. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
4050 This has been fixed.
4052 65. Caching of lookup data for "hosts =" ACL conditions, when a named host list
4053 was in use, was not putting the data itself into the right store pool;
4054 consequently, it could be overwritten for a subsequent message in the same
4055 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
4058 66. Added hosts_max_try_hardlimit to the smtp transport, default 50.
4060 67. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
4061 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
4062 the function were treating the return as a boolean value, which happened to
4063 work because 0=false and not-0=true, but is not correct code.
4065 68. The host_aton() function was not handling scoped IPv6 addresses (those
4066 with, for example, "%eth0" on the end) correctly.
4068 69. Fixed some compiler warnings in acl.c for the bitmaps specified with
4069 negated items (that is, ~something) in unsigned ints. Some compilers
4070 apparently mutter when there is no cast.
4072 70. If an address verification called from an ACL failed, and did not produce a
4073 user-specific message (i.e. there was only a "system" message), nothing was
4074 put in $acl_verify_message. In this situation, it now puts the system
4077 71. Change 4.23/11 added synchronization checking at the start of an SMTP
4078 session; change 4.31/43 added the unwanted input to the log line - except
4079 that it did not do this in the start of session case. It now does.
4081 72. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
4082 This is wrong and can cause the other end to generate a synchronization
4083 error if it is another Exim or anything else that does the synchronization
4084 check. A QUIT command is no longer sent after a timeout.
4086 73. $host_lookup_deferred has been added, to make it easier to detect DEFERs
4087 during host lookups.
4089 74. The defer_ok option of callout verification was not working if it was used
4090 when verifying addresses in header lines, that is, for this case:
4092 verify = header_sender/callout=defer_ok
4094 75. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
4095 those file descriptors could be used for SMTP connections. If anything
4096 wrote to stderr (the example that came up was "warn" in embedded Perl), it
4097 could be sent to the SMTP client, causing chaos. The daemon now opens
4098 stdin, stdout, and stderr to /dev/null when it puts itself into the
4101 76. Arrange for output from Perl's "warn" command to be written to Exim's main
4102 log by default. The user can override this with suitable Perl magic.
4104 77. The use of log_message on a "discard" ACL verb, which is supposed to add to
4105 the log message when discard triggers, was not working for the DATA ACL or
4106 for the non-SMTP ACL.
4108 78. Error message wording change in sieve.c.
4110 79. If smtp_accept_max_per_host was set, the number of connections could be
4111 restricted to fewer than expected, because the daemon was trying to set up
4112 a new connection before checking whether the processes handling previous
4113 connections had finished. The check for completed processes is now done
4114 earlier. On busy systems, this bug wouldn't be noticed because something
4115 else would have woken the daemon, and it would have reaped the completed
4118 80. If a message was submitted locally by a user whose login name contained one
4119 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
4120 It caused a spool format error. I have fixed the spool reading code. A
4121 related problem was that the "from" clause in the Received: line became
4122 illegal because of the space(s). It is now covered by ${quote_local_part.
4124 81. Included the latest eximstats from Steve (adds average sizes to HTML Top
4127 82. Updated OS/Makefile-AIX as per message from Mike Meredith.
4129 83. Patch from Sieve maintainer to fix unterminated string problem in
4130 "vacation" handling.
4132 84. Some minor changes to the Linux configuration files to help with other
4133 OS variants using glibc.
4135 85. One more patch for Sieve to update vacation handling to latest spec.
4138 ----------------------------------------------------
4139 See the note above about the 4.44 and 4.50 releases.
4140 ----------------------------------------------------
4146 1. Change 4.43/35 introduced a bug that caused file counts to be
4147 incorrectly computed when quota_filecount was set in an appendfile
4150 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
4151 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
4154 3. Give more explanation in the error message when the command for a transport
4155 filter fails to execute.
4157 4. There are several places where Exim runs a non-Exim command in a
4158 subprocess. The SIGUSR1 signal should be disabled for these processes. This
4159 was being done only for the command run by the queryprogram router. It is
4160 now done for all such subprocesses. The other cases are: ${run, transport
4161 filters, and the commands run by the lmtp and pipe transports.
4163 5. Some older OS have a limit of 256 on the maximum number of file
4164 descriptors. Exim was using setrlimit() to set 1000 as a large value
4165 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
4166 systems. I've change it so that if it can't get 1000, it tries for 256.
4168 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
4169 was an oversight, and furthermore, ever since the addition of extra
4170 controls (e.g. 4.43/32), the checks on when to allow different forms of
4171 "control" were broken. There should now be diagnostics for all cases when a
4172 control that does not make sense is encountered.
4174 7. $recipients is now available in the predata ACL (oversight).
4176 8. Tidy the search cache before the fork to do a delivery from a message
4177 received from the command line. Otherwise the child will trigger a lookup
4178 failure and thereby defer the delivery if it tries to use (for example) a
4179 cached ldap connection that the parent has called unbind on.
4181 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
4182 of $address_data from the recipient verification was clobbered by the
4183 sender verification.
4185 10. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
4186 was its contents. (It was OK if the option was not defined at all.)
4188 11. A "Completed" log line is now written for messages that are removed from
4189 the spool by the -Mrm option.
4191 12. $host_address is now set to the target address during the checking of
4192 ignore_target_hosts.
4194 13. When checking ignore_target_hosts for an ipliteral router, no host name was
4195 being passed; this would have caused $sender_host_name to have been used if
4196 matching the list had actually called for a host name (not very likely,
4197 since this list is usually IP addresses). A host name is now passed as
4200 14. Changed the calls that set up the SIGCHLD handler in the daemon to use the
4201 code that specifies a non-restarting handler (typically sigaction() in
4202 modern systems) in an attempt to fix a rare and obscure crash bug.
4204 15. Narrowed the window for a race in the daemon that could cause it to ignore
4205 SIGCHLD signals. This is not a major problem, because they are used only to
4206 wake it up if nothing else does.
4208 16. A malformed maildirsize file could cause Exim to calculate negative values
4209 for the mailbox size or file count. Odd effects could occur as a result.
4210 The maildirsize information is now recalculated if the size or filecount
4213 17. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
4214 support for a long time. Removed HAVE_SYS_VFS_H.
4216 18. Updated exipick to current release from John Jetmore.
4218 19. Allow an empty sender to be matched against a lookup in an address list.
4219 Previously the only cases considered were a regular expression, or an
4222 20. Exim went into a mad DNS lookup loop when doing a callout where the
4223 host was specified on the transport, if the DNS lookup yielded more than
4226 21. The RFC2047 encoding function was originally intended for short strings
4227 such as real names; it was not keeping to the 75-character limit for
4228 encoded words that the RFC imposes. It now respects the limit, and
4229 generates multiple encoded words if necessary. To be on the safe side, I
4230 have increased the buffer size for the ${rfc2047: expansion operator from
4233 22. Failure to deliver a bounce message always caused it to be frozen, even if
4234 there was an errors_to setting on the router. The errors_to setting is now
4237 23. If an IPv6 address is given for -bh or -bhc, it is now converted to the
4238 canonical form (fully expanded) before being placed in
4239 $sender_host_address.
4241 24. Updated eximstats to version 1.33
4243 25. Include certificate and key file names in error message when GnuTLS fails
4244 to set them up, because the GnuTLS error message doesn't include the name
4245 of the failing file when there is a problem reading it.
4247 26. Expand error message when OpenSSL has problems setting up cert/key files.
4250 27. Reset the locale to "C" after calling embedded Perl, in case it was changed
4251 (this can affect the format of dates).
4253 28. exim_tidydb, when checking for the continued existence of a message for
4254 which it has found a message-specific retry record, was not finding
4255 messages that were in split spool directories. Consequently, it was
4256 deleting retry records that should have stayed in existence.
4258 29. eximstats updated to version 1.35
4259 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
4260 1.35 - bugfix such that pie charts by volume are generated correctly
4262 30. The SPA authentication driver was not abandoning authentication and moving
4263 on to the next authenticator when an expansion was forced to fail,
4264 contradicting the general specification for all authenticators. Instead it
4265 was generating a temporary error. It now behaves as specified.
4267 31. The default ordering of permitted cipher suites for GnuTLS was pessimal
4268 (the order specifies the preference for clients). The order is now AES256,
4269 AES128, 3DES, ARCFOUR128.
4271 31. Small patch to Sieve code - explicitly set From: when generating an
4274 32. Exim crashed if a remote delivery caused a very long error message to be
4275 recorded - for instance if somebody sent an entire SpamAssassin report back
4276 as a large number of 550 error lines. This bug was coincidentally fixed by
4277 increasing the size of one of Exim's internal buffers (big_buffer) that
4278 happened as part of the Exiscan merge. However, to be on the safe side, I
4279 have made the code more robust (and fixed the comments that describe what
4282 33. Some experimental protocols are using DNS PTR records for new purposes. The
4283 keys for these records are domain names, not reversed IP addresses. The
4284 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
4285 leaves it alone. Component reversal etc. now happens only for IP addresses.
4288 34. The host_aton() function is supposed to be passed a string that is known
4289 to be a valid IP address. However, in the case of IPv6 addresses, it was
4290 not checking this. This is a hostage to fortune. Exim now panics and dies
4291 if the condition is not met. A case was found where this could be provoked
4292 from a dnsdb PTR lookup with an IPv6 address that had more than 8
4293 components; fortuitously, this particular loophole had already been fixed
4294 by change 4.50/55 or 4.44/33 above.
4296 If there are any other similar loopholes, the new check in host_aton()
4297 itself should stop them being exploited. The report I received stated that
4298 data on the command line could provoke the exploit when Exim was running as
4299 exim, but did not say which command line option was involved. All I could
4300 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
4301 running as the user.
4304 35. There was a buffer overflow vulnerability in the SPA authentication code
4305 (which came originally from the Samba project). I have added a test to the
4306 spa_base64_to_bits() function which I hope fixes it.
4309 36. The daemon start-up calls getloadavg() while still root for those OS that
4310 need the first call to be done as root, but it missed one case: when
4311 deliver_queue_load_max is set with deliver_drop_privilege. This is
4312 necessary for the benefit of the queue runner, because there is no re-exec
4313 when deliver_drop_privilege is set.
4315 37. Caching of lookup data for "hosts =" ACL conditions, when a named host list
4316 was in use, was not putting the data itself into the right store pool;
4317 consequently, it could be overwritten for a subsequent message in the same
4318 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
4321 38. Sometimes the final signoff response after QUIT could fail to get
4322 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
4323 < 0 before doing a fflush(). This bug looks as though it goes back to the
4324 introduction of TLS in release 3.20, but "sometimes" must have been rare
4325 because the tests only now provoked it.
4331 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
4332 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
4333 Now it returns an integer. A number of calls were still expecting a T/F
4334 return. Fortuitously, in all cases, the tests worked in OK situations,
4335 which is the norm. However, things would have gone wrong on any write
4336 failures on the smtp file descriptor. This function is used when sending
4337 messages over SMTP and also when doing verify callouts.
4339 2. When Exim is called to do synchronous delivery of a locally submitted
4340 message (the -odf or -odi options), it no longer closes stderr before doing
4343 3. Implemented the mua_wrapper option.
4345 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
4347 5. Implemented the functions header_remove(), header_testname(),
4348 header_add_at_position(), and receive_remove_recipient(), and exported them
4351 6. If an ACL "warn" statement specified the addition of headers, Exim already
4352 inserted X-ACL-Warn: at the start if there was no header name. However, it
4353 was not making this test for the second and subsequent header lines if
4354 there were newlines in the string. This meant that an invalid header could
4355 be inserted if Exim was badly configured.
4357 7. Allow an ACL "warn" statement to add header lines at the start or after all
4358 the Received: headers, as well as at the end.
4360 8. Added the rcpt_4xx retry error code.
4362 9. Added postmaster_mailfrom=xxx to callout verification option.
4364 10. Added mailfrom=xxxx to the callout verification option, for verify=
4367 11. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
4368 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
4370 12. Inserted some casts to stop certain compilers warning when using pointer
4371 differences as field lengths or precisions in printf-type calls (mostly
4372 affecting debugging statements).
4374 13. Added optional readline() support for -be (dynamically loaded).
4376 14. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
4377 same clock tick as a message's arrival, so that its received time was the
4378 same as the "first fail" time on the retry record, and that message
4379 remained on the queue past the ultimate address timeout, every queue runner
4380 would try a delivery (because it was past the ultimate address timeout) but
4381 after another failure, the ultimate address timeout, which should have then
4382 bounced the address, did not kick in. This was a "< instead of <=" error;
4383 in most cases the first failure would have been in the next clock tick
4384 after the received time, and all would be well.
4386 15. The special items beginning with @ in domain lists (e.g. @mx_any) were not
4387 being recognized when the domain list was tested by the match_domain
4388 condition in an expansion string.
4390 16. Added the ${str2b64: operator.
4392 17. Exim was always calling setrlimit() to set a large limit for the number of
4393 processes, without checking whether the existing limit was already
4394 adequate. (It did check for the limit on file descriptors.) Furthermore,
4395 errors from getrlimit() and setrlimit() were being ignored. Now they are
4396 logged to the main and panic logs, but Exim does carry on, to try to do its
4397 job under whatever limits there are.
4399 18. Imported PCRE 5.0.
4401 19. Trivial typo in log message " temporarily refused connection" (the leading
4404 20. If the log selector return_path_on_delivery was set and an address was
4405 redirected to /dev/null, the delivery process crashed because it assumed
4406 that a return path would always be set for a "successful" delivery. In this
4407 case, the whole delivery is bypassed as an optimization, and therefore no
4410 21. Internal re-arrangement: the function for sending a challenge and reading
4411 a response while authentication was assuming a zero-terminated challenge
4412 string. It's now changed to take a pointer and a length, to allow for
4413 binary data in such strings.
4415 22. Added the cyrus_sasl authenticator (code supplied by MBM).
4417 23. Exim was not respecting finduser_retries when seeking the login of the
4418 uid under which it was called; it was always trying 10 times. (The default
4419 setting of finduser_retries is zero.) Also, it was sleeping after the final
4420 failure, which is pointless.
4422 24. Implemented tls_on_connect_ports.
4424 25. Implemented acl_smtp_predata.
4426 26. If the domain in control=submission is set empty, Exim assumes that the
4427 authenticated id is a complete email address when it generates From: or
4428 Sender: header lines.
4430 27. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
4431 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
4432 chown and chgrp in /bin and hostname in /usr/bin.
4434 28. Exim was keeping the "process log" file open after each use, just as it
4435 does for the main log. This opens the possibility of it remaining open for
4436 long periods when the USR1 signal hits a daemon. Occasional processlog
4437 errors were reported, that could have been caused by this. Anyway, it seems
4438 much more sensible not to leave this file open at all, so that is what now
4441 29. The long-running daemon process does not normally write to the log once it
4442 has entered its main loop, and it closes the log before doing so. This is
4443 so that log files can straightforwardly be renamed and moved. However,
4444 there are a couple of unusual error situations where the daemon does write
4445 log entries, and I had neglected to close the log afterwards.
4447 30. The text of an SMTP error response that was received during a remote
4448 delivery was being truncated at 512 bytes. This is too short for some of
4449 the long messages that one sometimes sees. I've increased the limit to
4452 31. It is now possible to make retry rules that apply only when a message has a
4453 specific sender, in particular, an empty sender.
4455 32. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
4456 it possible to be selective about when SMTP synchronization is enforced.
4458 33. Added "control = caseful_local_part" and "control = "caselower_local_part".
4460 32. Implemented hosts_connection_nolog.
4462 33. Added an ACL for QUIT.
4464 34. Setting "delay_warning=" to disable warnings was not working; it gave a
4467 35. Added mailbox_size and mailbox_filecount to appendfile.
4469 36. Added control = no_multiline_responses to ACLs.
4471 37. There was a bug in the logic of the code that waits for the clock to tick
4472 in the case where the clock went backwards by a substantial amount such
4473 that the microsecond fraction of "now" was more than the microsecond
4474 fraction of "then" (but the whole seconds number was less).
4476 38. Added support for the libradius Radius client library this is found on
4477 FreeBSD (previously only the radiusclient library was supported).
4483 1. When certain lookups returned multiple values in the form name=value, the
4484 quoting of the values was not always being done properly. Specifically:
4485 (a) If the value started with a double quote, but contained no whitespace,
4487 (b) If the value contained whitespace other than a space character (i.e.
4488 tabs or newlines or carriage returns) it was not quoted.
4489 This fix has been applied to the mysql and pgsql lookups by writing a
4490 separate quoting function and calling it from the lookup code. The fix
4491 should probably also be applied to nisplus, ibase and oracle lookups, but
4492 since I cannot test any of those, I have not disturbed their existing code.
4494 2. A hit in the callout cache for a specific address caused a log line with no
4495 reason for rejecting RCPT. Now it says "Previous (cached) callout
4496 verification failure".
4498 3. There was an off-by-one bug in the queryprogram router. An over-long
4499 return line was truncated at 256 instead of 255 characters, thereby
4500 overflowing its buffer with the terminating zero. As well as fixing this, I
4501 have increased the buffer size to 1024 (and made a note to document this).
4503 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
4504 when Exim is waiting for an SMTP response from a remote server, Exim
4505 restarts its select() call on the socket, thereby resetting its timeout.
4506 This is not a problem when such interrupts are rare. Somebody set up a cron
4507 job to run exiwhat every 2 minutes, which is less than the normal select()
4508 timeout (5 or 10 minutes). This meant that the select() timeout never
4509 kicked in because it was always reset. I have fixed this by comparing the
4510 time when an interrupt arrives with the time at the start of the first call
4511 to select(). If more time than the timeout has elapsed, the interrupt is
4512 treated as a timeout.
4514 5. Some internal re-factoring in preparation for the addition of Sieve
4515 extensions (by MH). In particular, the "personal" test is moved to a
4516 separate function, and given an option for scanning Cc: and Bcc: (which is
4517 not set for Exim filters).
4519 6. When Exim created an email address using the login of the caller as the
4520 local part (e.g. when creating a From: or Sender: header line), it was not
4521 quoting the local part when it contained special characters such as @.
4523 7. Installed new OpenBSD configuration files.
4525 8. Reworded some messages for syntax errors in "and" and "or" conditions to
4526 try to make them clearer.
4528 9. Callout options, other than the timeout value, were being ignored when
4529 verifying sender addresses in header lines. For example, when using
4531 verify = header_sender/callout=no_cache
4533 the cache was (incorrectly) being used.
4535 10. Added a missing instance of ${EXE} to the exim_install script; this affects
4536 only the Cygwin environment.
4538 11. When return_path_on_delivery was set as a log selector, if different remote
4539 addresses in the same message used different return paths and parallel
4540 remote delivery occurred, the wrong values would sometimes be logged.
4541 (Whenever a remote delivery process finished, the return path value from
4542 the most recently started remote delivery process was logged.)
4544 12. RFC 3848 specifies standard names for the "with" phrase in Received: header
4545 lines when AUTH and/or TLS are in use. This is the "received protocol"
4546 field. Exim used to use "asmtp" for authenticated SMTP, without any
4547 indication (in the protocol name) for TLS use. Now it follows the RFC and
4548 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
4549 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
4550 names appear in log lines as well as in Received: header lines.
4552 13. Installed MH's patches for Sieve to add the "copy" and "vacation"
4553 extensions, and comparison tests, and to fix some bugs.
4555 14. Changes to the "personal" filter test:
4557 (1) The test was buggy in that it was just doing the equivalent of
4558 "contains" tests on header lines. For example, if a user's address was
4559 anne@some.where, the "personal" test would incorrectly be true for
4561 To: susanne@some.where
4563 This test is now done by extracting each address from the header in turn,
4564 and checking the entire address. Other tests that are part of "personal"
4565 are now done using regular expressions (for example, to check local parts
4566 of addresses in From: header lines).
4568 (2) The list of non-personal local parts in From: addresses has been
4569 extended to include "listserv", "majordomo", "*-request", and "owner-*",
4570 taken from the Sieve specification recommendations.
4572 (3) If the message contains any header line starting with "List-" it is
4573 treated as non-personal.
4575 (4) The test for "circular" in the Subject: header line has been removed
4576 because it now seems ill-conceived.
4578 15. Minor typos in src/EDITME comments corrected.
4580 16. Installed latest exipick from John Jetmore.
4582 17. If headers_add on a router specified a text string that was too long for
4583 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
4584 of string_sprintf() is now avoided.
4586 18. $message_body_size was not set (it was always zero) when running the DATA
4587 ACL and the local_scan() function.
4589 19. For the "mail" command in an Exim filter, no default was being set for
4590 the once_repeat time, causing a random time value to be used if "once" was
4591 specified. (If the value happened to be <= 0, no repeat happened.) The
4592 default is now 0s, meaning "never repeat". The "vacation" command was OK
4593 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
4594 (I found it when inspecting the code).
4596 20. There is now an overall timeout for performing a callout verification. It
4597 defaults to 4 times the callout timeout, which applies to individual SMTP
4598 commands during the callout. The overall timeout applies when there is more
4599 than one host that can be tried. The timeout is checked before trying the
4600 next host. This prevents very long delays if there are a large number of
4601 hosts and all are timing out (e.g. when the network connections are timing
4602 out). The value of the overall timeout can be changed by specifying an
4603 additional sub-option for "callout", called "maxwait". For example:
4605 verify = sender/callout=5s,maxwait=20s
4607 21. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
4608 to the end before writing, but this should make it even safer).
4610 22. Exim was forgetting that it had advertised PIPELINING for the second and
4611 subsequent messages on an SMTP connection. It was also not resetting its
4612 memory on STARTTLS and an internal HELO.
4614 23. When Exim logs an SMTP synchronization error within a session, it now
4615 records whether PIPELINING has been advertised or not.
4617 24. Added 3 instances of "(long int)" casts to time_t variables that were being
4618 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
4619 rather than long int.
4621 25. Installed the latest Cygwin configuration files from the Cygwin maintainer.
4623 26. Added the never_mail option to autoreply.
4629 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
4630 crash if the getsockname() call failed; this can happen if a connection is
4631 closed very soon after it is established. The problem was simply in the
4632 order in which certain operations were done, causing Exim to try to write
4633 to the SMTP stream before it had set up the file descriptor. The bug has
4634 been fixed by making things happen in the correct order.
4640 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
4641 before the connection was closed, thus losing the rejection response.
4643 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
4644 some early Solaris releases, but causes trouble in current releases where
4645 socklen_t is defined.
4647 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
4650 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
4653 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
4654 that releasing the top of it at the end releases what was used for sub-
4655 expansions (unless the block got too big). However, discard this block if
4656 the first thing is a variable or header, so that we can use its block when
4657 it is dynamic (useful for very large $message_headers, for example).
4659 6. Lookups now cache *every* query, not just the most recent. A new, separate
4660 store pool is used for this. It can be recovered when all lookup caches are
4661 flushed. Lookups now release memory at the end of their result strings.
4662 This has involved some general refactoring of the lookup sources.
4664 7. Some code has been added to the store_xxx() functions to reduce the amount
4665 of flapping under certain conditions.
4667 8. log_incoming_interface used to affect only the <= reception log lines. Now
4668 it causes the local interface and port to be added to several more SMTP log
4669 lines, for example "SMTP connection from", and rejection lines.
4671 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
4673 10. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
4675 11. If $host_data was set by virtue of a hosts lookup in an ACL, its value
4676 could be overwritten at the end of the current message (or the start of a
4677 new message if it was set in a HELO ACL). The value is now preserved for
4678 the duration of the SMTP connection.
4680 12. If a transport had a headers_rewrite setting, and a matching header line
4681 contained an unqualified address, that address was qualified, even if it
4682 did not match any rewriting rules. The underlying bug was that the values
4683 of the flags that permit the existence of unqualified sender and recipient
4684 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
4685 non-local messages, and by -bnq for local messages) were not being
4686 preserved with the message after it was received.
4688 13. When Exim was logging an SMTP synchronization error, it could sometimes log
4689 "next input=" as part of the text comprising the host identity instead of
4690 the correct text. The code was using the same buffer for two different
4691 strings. However, depending on which order the printing function evaluated
4692 its arguments, the bug did not always show up. Under Linux, for example, my
4693 test suite worked just fine.
4695 14. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
4696 doesn't work with some older versions of Perl. It has been changed to "my",
4697 which in any case is probably the better facility to use.
4699 15. A really picky compiler found some instances of statements for creating
4700 error messages that either had too many or two few arguments for the format
4703 16. The size of the buffer for calls to the DNS resolver has been increased
4704 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
4705 for addresses that have a lot of PTR records. This alleviates a problem; it
4706 does not fully solve it.
4708 17. A dnsdb lookup for PTR records that receives more data than will fit in the
4709 buffer now truncates the list and logs the incident, which is the same
4710 action as happens when Exim is looking up a host name and its aliases.
4711 Previously in this situation something unpredictable would happen;
4712 sometimes it was "internal error: store_reset failed".
4714 18. If a server dropped the connection unexpectedly when an Exim client was
4715 using GnuTLS and trying to read a response, the client delivery process
4716 crashed while trying to generate an error log message.
4718 19. If a "warn" verb in an ACL added multiple headers to a message in a single
4719 string, for example:
4721 warn message = H1: something\nH2: something
4723 the text was added as a single header line from Exim's point of view
4724 though it ended up OK in the delivered message. However, searching for the
4725 second and subsequent header lines using $h_h2: did not work. This has been
4726 fixed. Similarly, if a system filter added multiple headers in this way,
4727 the routers could not see them.
4729 20. Expanded the error message when iplsearch is called with an invalid key to
4730 suggest using net-iplsearch in a host list.
4732 21. When running tests using -bh, any delays imposed by "delay" modifiers in
4733 ACLs are no longer actually imposed (and a message to that effect is
4736 22. If a "gecos" field in a passwd entry contained escaped characters, in
4737 particular, if it contained a \" sequence, Exim got it wrong when building
4738 a From: or a Sender: header from that name. A second bug also caused
4739 incorrect handling when an unquoted " was present following a character
4740 that needed quoting.
4742 23. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
4743 was not being matched caselessly.
4745 24. Arranged for all hyphens in the exim.8 source to be escaped with
4748 25. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
4749 properly. Recipient callout cache records were still being keyed to include
4750 the sender, even when use_sender was set false. This led to far more
4751 callouts that were necessary. The sender is no longer included in the key
4752 when use_sender is false.
4754 26. Added "control = submission" modifier to ACLs.
4756 27. Added the ${base62d: operator to decode base 62 numbers.
4758 28. dnsdb lookups can now access SRV records.
4760 29. CONFIGURE_OWNER can be set at build time to define an alternative owner for
4761 the configuration file.
4763 30. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
4764 (-v) mode. This makes the output for a verbose queue run more intelligible.
4766 31. Added a use_postmaster feature to recipient callouts.
4768 32. Added the $body_zerocount variable, containing the number of binary zero
4769 bytes in the message body.
4771 33. The time of last modification of the "new" subdirectory is now used as the
4772 "mailbox time last read" when there is a quota error for a maildir
4775 34. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
4777 35. Added +ignore_unknown as a special item in host lists.
4779 36. Code for decoding IPv6 addresses in host lists is now included, even if
4780 IPv6 support is not being compiled. This fixes a bug in which an IPv6
4781 address was recognized as an IP address, but was then not correctly decoded
4782 into binary, causing unexpected and incorrect effects when compared with
4789 1. Very minor rewording of debugging text in manualroute to say "list of
4790 hosts" instead of "hostlist".
4792 2. If verify=header_syntax was set, and a header line with an unqualified
4793 address (no domain) and a large number of spaces between the end of the
4794 name and the colon was received, the reception process suffered a buffer
4795 overflow, and (when I tested it) crashed. This was caused by some obsolete
4796 code that should have been removed. The fix is to remove it!
4798 3. When running in the test harness, delay a bit after writing a bounce
4799 message to get a bit more predictability in the log output.
4801 4. Added a call to search_tidyup() just before forking a reception process. In
4802 theory, someone could use a lookup in the expansion of smtp_accept_max_
4803 per_host which, without the tidyup, could leave open a database connection.
4805 5. Added the variables $recipient_data and $sender_data which get set from a
4806 lookup success in an ACL "recipients" or "senders" condition, or a router
4807 "senders" option, similar to $domain_data and $local_part_data.
4809 6. Moved the writing of debug_print from before to after the "senders" test
4812 7. Change 4.31/66 (moving the time when the Received: is generated) caused
4813 problems for message scanning, either using a data ACL, or using
4814 local_scan() because the Received: header was not generated till after they
4815 were called (in order to set the time as the time of reception completion).
4816 I have revised the way this works. The header is now generated after the
4817 body is received, but before the ACL or local_scan() are called. After they
4818 are run, the timestamp in the header is updated.
4824 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
4825 before starting a queue runner without re-exec. This happened only when
4826 deliver_drop_privilege was set or when the Exim user was set to root. The
4827 effect of the bug was that timeouts during subsequent deliveries caused
4828 crashes instead of being properly handled. The handler is now left at its
4829 default (and expected) setting.
4831 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
4832 message, again when deliver_drop_privilege is set or Exim is run as root.
4833 The bug described in (1) was not present in this case, but the tidying up
4834 of the other signals was missing. I have made the two cases consistent.
4836 3. The ignore_target_hosts setting on a manualroute router was being ignored
4837 for hosts that were looked up using the /MX notation.
4839 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
4842 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
4843 operated on the sender address. After changing the $sender_address to <>
4844 for the sender address verify, Exim was re-instated it as the original
4845 (before rewriting) address, but remembering that it had rewritten it, so it
4846 wasn't rewriting it again. This bug also had the effect of breaking the
4847 sender address verification caching when the sender address was rewritten.
4849 6. The ignore_target_hosts option was being ignored by the ipliteral router.
4850 This has been changed so that if the ip literal address matches
4851 ignore_target_hosts, the router declines.
4853 7. Added expansion conditions match_domain, match_address, and match_local_
4854 part (NOT match_host).
4856 8. The placeholder for the Received: header didn't have a length field set.
4858 9. Added code to Exim itself and to exim_lock to test for a specific race
4859 condition that could lead to file corruption when using MBX delivery. The
4860 issue is with the lockfile that is created in /tmp. If this file is removed
4861 after a process has opened it but before that process has acquired a lock,
4862 there is the potential for a second process to recreate the file and also
4863 acquire a lock. This could lead to two Exim processes writing to the file
4864 at the same time. The added code performs the same test as UW imapd; it
4865 checks after acquiring the lock that its file descriptor still refers to
4866 the same named file.
4868 10. The buffer for building added header lines was of fixed size, 8192 bytes.
4869 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
4872 11. Added the smtp_active_hostname option. If used, this will typically be made
4873 to depend on the incoming interface address. Because $interface_address is
4874 not set up until the daemon has forked a reception process, error responses
4875 that can happen earlier (such as "too many connections") no longer contain
4878 12. If an expansion in a condition on a "warn" statement fails because a lookup
4879 defers, the "warn" statement is abandoned, and the next ACL statement is
4880 processed. Previously this caused the whole ACL to be aborted.
4882 13. Added the iplsearch lookup type.
4884 14. Added ident_timeout as a log selector.
4886 15. Added tls_certificate_verified as a log selector.
4888 16. Added a global option tls_require_ciphers (compare the smtp transport
4889 option of the same name). This controls incoming TLS connections.
4891 17. I finally figured out how to make tls_require_ciphers do a similar thing
4892 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
4893 before starting the TLS session.
4895 18. Tabs are now shown as \t in -bP output.
4897 19. If the log selector return_path_on_delivery was set, Exim crashed when
4898 bouncing a message because it had too many Received: header lines.
4900 20. If two routers both had headers_remove settings, and the first one included
4901 a superfluous trailing colon, the final name in the first list and the
4902 first name in the second list were incorrectly joined into one item (with a
4903 colon in the middle).
4909 1. Added -C and -D options to the exinext utility, mainly to make it easier
4910 to include in the automated testing, but these could be helpful when
4911 multiple configurations are in use.
4913 2. The exinext utility was not formatting the output nicely when there was
4914 an alternate port involved in the retry record key, nor when there was a
4915 message id as well (for retries that were specific to a specific message
4916 and a specific host). It was also confused by IPv6 addresses, because of
4917 the additional colons they contain. I have fixed the IPv4 problem, and
4918 patched it up to do a reasonable job for IPv6.
4920 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
4921 delivery, the log line now contains "pipelined" if PIPELINING was used.
4923 4. An SMTP transport process used to panic and die if the bind() call to set
4924 an explicit outgoing interface failed. This has been changed; it is now
4925 treated in the same way as a connect() failure.
4927 5. A reference to $sender_host_name in the part of a conditional expansion
4928 that was being skipped was still causing a DNS lookup. This no longer
4931 6. The def: expansion condition was not recognizing references to header lines
4932 that used bh_ and bheader_.
4934 7. Added the _cache feature to named lists.
4936 8. The code for checking quota_filecount in the appendfile transport was
4937 allowing one more file than it should have been.
4939 9. For compatibility with Sendmail, the command line option
4947 and sets the incoming protocol and host name (for trusted callers). The
4948 host name and its colon can be omitted when only the protocol is to be set.
4949 Note the Exim already has two private options, -pd and -ps, that refer to
4950 embedded Perl. It is therefore impossible to set a protocol value of "d" or
4951 "s", but I don't think that's a major issue.
4953 10. A number of refactoring changes to the code, none of which should affect
4956 (a) The number of logging options was getting close to filling up the
4957 32-bit word that was used as a bit map. I have split them into two classes:
4958 those that are passed in the argument to log_write(), and those that are
4959 only ever tested independently outside of that function. These are now in
4960 separate 32-bit words, so there is plenty of room for expansion again.
4961 There is no change in the user interface or the logging behaviour.
4963 (b) When building, for example, log lines, the code previously used a
4964 macro that called string_cat() twice, in order to add two strings. This is
4965 not really sufficiently general. Furthermore, there was one instance where
4966 it was actually wrong because one of the argument was used twice, and in
4967 one call a function was used. (As it happened, calling the function twice
4968 did not affect the overall behaviour.) The macro has been replaced by a
4969 function that can join an arbitrary number of extra strings onto a growing
4972 (c) The code for expansion conditions now uses a table and a binary chop
4973 instead of a serial search (which was left over from when there were very
4974 few conditions). Also, it now recognizes conditions like "pam" even when
4975 the relevant support is not compiled in: a suitably worded error message is
4976 given if an attempt is made to use such a condition.
4978 11. Added ${time_interval:xxxxx}.
4980 12. A bug was causing one of the ddress fields not to be passed back correctly
4981 from remote delivery subprocesses. The field in question was not being
4982 subsequently used, so this caused to problems in practice.
4984 13. Added new log selectors queue_time and deliver_time.
4986 14. Might have fixed a bug in maildirsizefile handling that threw up
4987 "unexpected character" debug warnings, and recalculated the data
4988 unnecessarily. In any case, I expanded the warning message to give more
4991 15. Added the message "Restricted characters in address" to the statements in
4992 the default ACL that block characters like @ and % in local parts.
4994 16. Change 71 for release 4.31 proved to be much less benign that I imagined.
4995 Three changes have been made:
4997 (a) There was a serious bug; a negative response to MAIL caused the whole
4998 recipient domain to be cached as invalid, thereby blocking all messages
4999 to all local parts at the same domain, from all senders. This bug has
5000 been fixed. The domain is no longer cached after a negative response to
5001 MAIL if the sender used is not empty.
5003 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
5006 (c) A new callout option, "use_sender" has been added for people who want
5007 the modified behaviour.
5013 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
5016 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
5017 indeed breaks things for older releases.
5019 3. Added additional logging to the case where there is a problem reading data
5020 from a filter that is running in a subprocess using a pipe, in order to
5021 try to track down a specific problem.
5023 4. Testing facility fudge: when running in the test harness and attempting
5024 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
5025 getting "No route to host". Convert this to a timeout.
5027 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
5030 6. Some OS don't have socklen_t but use size_t instead. This affects the
5031 fifth argument of getsockopt() amongst other things. This is now
5032 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
5033 can be set for individual OS. I have set it for SunOS5, OSF1, and
5034 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
5035 some earlier ones do not.
5037 7. Change 4.30/15 was not doing the test caselessly.
5039 8. The standard form for an IPv6 address literal was being rejected by address
5040 parsing in, for example, MAIL and RCPT commands. An example of this kind of
5041 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
5042 this, as well as the form without the "IPv6" on the front (but only when
5043 address literals are enabled, of course).
5045 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
5047 10. Exim crashed if a message with an empty sender address specified by -f
5048 encountered a router with an errors_to setting. This could be provoked only
5049 by a command such as
5053 where an empty string was supplied; "<>" did not hit this bug.
5055 11. Installed PCRE release 4.5.
5057 12. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
5058 remained set. It is now erased.
5060 13. exiqgrep wasn't working on MacOS X because it didn't correctly compute
5061 times from message ids (which are base 36 rather than the normal 62).
5063 14. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
5064 were being counted as actual protocol errors, and logged if the log
5065 selector +smtp_protocol_error was set. One cannot be perfect in this test,
5066 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
5067 and DATA following a set of rejected RCPTs do not count as protocol errors.
5068 In other words, Exim assumes they were pipelined, though this may not
5069 actually be the case. Of course, in all cases the client gets an
5070 appropriate error code.
5072 15. If a lookup fails in an ACL condition, a message about the failure may
5073 be available; it is used if testing the ACL cannot continue, because most
5074 such messages specify what the cause of the deferral is. However, some
5075 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
5076 that caused an old message to be retained and used if a later statement
5077 caused a defer, replacing the real cause of the deferral.
5079 16. If an IP address had so many PTR records that the DNS lookup buffer
5080 was not large enough to hold them, Exim could crash while trying to process
5081 the truncated data. It now detects and logs this case.
5083 17. Further to 4.21/58, another change has been made: if (and only if) the
5084 first line of a message (the first header line) ends with CRLF, a bare LF
5085 in a subsequent header line has a space inserted after it, so as not to
5086 terminate the header.
5088 18. Refactoring: tidied an ugly bit of code in appendfile that copied data
5089 unnecessarily, used atoi() instead of strtol(), and didn't check the
5090 termination when getting file sizes from file names by regex.
5092 19. Completely re-implemented the support for maildirsize files, in the light
5093 of a number of problems with the previous contributed implementation
5094 (4.30/29). In particular:
5096 . If the quota is zero, the maildirsize file is maintained, but no quota is
5099 . If the maildir directory does not exist, it is created before any attempt
5100 to write a maildirsize file.
5102 . The quota value in the file is just a cache; if the quota is changed in
5103 the transport, the new value overrides.
5105 . A regular expression is available for excluding directories from the
5108 20. The autoreply transport checks the characters in options that define the
5109 message's headers; it allows continued headers, but it was checking with
5110 isspace() after an embedded newline instead of explicitly looking for a
5113 21. If all the "regular" hosts to which an address was routed had passed their
5114 expiry times, and had not reached their retry times, the address was
5115 bounced, even if fallback hosts were defined. Now Exim should go on to try
5118 22. Increased buffer sizes in the callout code from 1024 to 4096 to match the
5119 equivalent code in the SMTP transport. Some hosts send humungous responses
5120 to HELO/EHLO, more than 1024 it seems.
5122 23. Refactoring: code in filter.c used (void *) for "any old type" but this
5123 gives compiler warnings in some environments. I've now done it "properly",
5126 24. The replacement for inet_ntoa() that is used with gcc on IRIX systems
5127 (because of problems with the built-in one) was declared to return uschar *
5128 instead of char *, causing compiler failure.
5130 25. Fixed a file descriptor leak when processing alias/forward files.
5132 26. Fixed a minor format string issue in dbfn.c.
5134 27. Typo in exim.c: ("dmbnz" for "dbmnz").
5136 28. If a filter file refered to $h_xxx or $message_headers, and the headers
5137 contained RFC 2047 "words", Exim's memory could, under certain conditions,
5140 29. When a sender address is verified, it is cached, to save repeating the test
5141 when there is more than one recipient in a message. However, when the
5142 verification involves a callout, it is possible for different callout
5143 options to be set for different recipients. It is too complicated to keep
5144 track of this in the cache, so now Exim always runs a verification when a
5145 callout is required, relying on the callout cache for the optimization.
5146 The overhead is duplication of the address routing, but this should not be
5149 30. Fixed a bug in callout caching. If a RCPT command caused the sender address
5150 to be verified with callout=postmaster, and the main callout worked but the
5151 postmaster check failed, the verification correctly failed. However, if a
5152 subsequent RCPT command asked for sender verification *without* the
5153 postmaster check, incorrect caching caused this verification also to fail,
5156 31. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
5157 it was not caching the DNS options (qualify_single, search_parents) that
5158 were used when the lookup failed. A subsequent lookup with different
5159 options therefore always gave the same answer, though there were cases
5160 where it should not have. (Example: a "domains = !$mx_any" option on a
5161 dnslookup router: the "domains" option is always processed without any
5162 widening, but the router might have qualify_single set.) Now Exim uses the
5163 cached value only when the same options are set.
5165 32. Added John Jetmore's "exipick" utility to the distribution.
5167 33. GnuTLS: When an attempt to start a TLS session fails for any reason other
5168 than a timeout (e.g. a certificate is required, and is not provided), an
5169 Exim server now closes the connection immediately. Previously it waited for
5170 the client to close - but if the client is SSL, it seems that they each
5171 wait for each other, leading to a delay before one of them times out.
5173 34: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
5174 maintained 0.8.x compatibility because I don't think many are using it, and
5175 it is clearly obsolete.
5177 35. Added TLS support for CRLs: a tls_crl global option and one for the smtp
5180 36. OpenSSL: $tls_certificate_verified was being set to 1 even if the
5181 client certificate was expired. A simple patch fixes this, though I don't
5182 understand the full logic of why the verify callback is called multiple
5185 37. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
5186 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
5187 which causes problems with some clients (such as the Certicom SSL Plus
5188 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
5189 disables the coutermeasure allowing Eudora to connect."
5191 38. Exim was not checking that a write() to a log file succeeded. This could
5192 lead to Bad Things if a log got too big, in particular if it hit a file
5193 size limit. Exim now panics and dies if it cannot write to a log file, just
5194 as it does if it cannot open a log file.
5196 39. Modified OS/Makefile-Linux so that it now contains
5198 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
5200 The two -D definitions ensure that Exim is compiled with large file
5201 support, which makes it possible to handle log files that are bigger than
5204 40. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
5205 instance) a domain was checked against a named list that involved a lookup,
5206 causing $domain_data to be set, then another domain was checked against the
5207 same list, then the first domain was re-checked, the value of $domain_data
5208 after the final check could be wrong. In particular, if the second check
5209 failed, it could be set empty. This bug probably also applied to
5212 41. The strip_trailing_dot option was not being applied to the address given
5213 with the -f command-line option.
5215 42. The code for reading a message's header from the spool was incrementing
5216 $received_count, but never initializing it. This meant that the value was
5217 incorrect (doubled) while delivering a message in the same process in which
5218 it was received. In the most common configuration of Exim, this never
5219 happens - a fresh exec is done - but it can happen when
5220 deliver_drop_privilege is set.
5222 43. When Exim logs an SMTP synchronization error - client data sent too soon -
5223 it now includes up to 150 characters of the unexpected data in the log
5226 44. The exim_dbmbuild utility uses fixed size buffers for reading input lines
5227 and building data strings. The size of both of these buffers was 10 000
5228 bytes - far larger than anybody would *ever* want, thought I. Needless to
5229 say, somebody hit the limit. I have increased the maximum line length to
5230 20 000 and the maximum data length of concatenated lines to 100 000. I have
5231 also fixed two bugs, because there was no checking on these buffers. Tsk,
5232 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
5233 buffer is too small.
5235 45. The exim_dbmbuild utility did not support quoted keys, as Exim does in
5236 lsearch lookups. Now it does.
5238 46. When parsing a route_list item in a manualroute router, a fixed-length
5239 buffer was used for the list of hosts. I made this 1024 bytes long,
5240 thinking that nobody would ever have a list of hosts that long. Wrong.
5241 Somebody had a whole pile of complicated expansion conditions, and the
5242 string was silently truncated, leading to an expansion error. It turns out
5243 that it is easier to change to an unlimited length (owing to other changes
5244 that have happened since this code was originally written) than to build
5245 structure for giving a limitation error. The length of the item that
5246 expands into the list of hosts is now unlimited.
5248 47. The lsearch lookup could not handle data where the length of text line was
5249 more than 4095 characters. Such lines were truncated, leading to shortened
5250 data being returned. It should now handle lines of any length.
5252 48. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
5253 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
5256 49. Cosmetic tidy to scripts like exicyclog that are generated by globally
5257 replacing strings such as BIN_DIRECTORY in a source file: the replacement
5258 no longer happens in comment lines. A list of replacements is now placed
5259 at the head of all of the source files, except those whose only change is
5260 to replace PERL_COMMAND in the very first #! line.
5262 50. Replaced the slow insertion sort in queue.c, for sorting the list of
5263 messages on the queue, with a bottom-up merge sort, using code contributed
5264 by Michael Haardt. This should make operations like -bp somewhat faster on
5265 large queues. It won't affect queue runners, except when queue_run_in_order
5268 51. Installed eximstats 1.31 in the distribution.
5270 52. Added support for SRV lookups to the dnslookup router.
5272 53. If an ACL referred to $message_body or $message_body_end, the value was not
5273 reset for any messages that followed in the same SMTP session.
5275 54. The store-handling optimization for building very long strings was not
5276 differentiating between the different store pools. I don't think this
5277 actually made any difference in practice, but I've tidied it.
5279 55. While running the routers to verify a sender address, $sender_address
5280 was still set to the sender address. This is wrong, because when routing to
5281 send a bounce to the sender, it would be empty. Therefore, I have changed
5282 it so that, while verifying a sender address, $sender_address is set to <>.
5283 (There is no change to what happens when verifying a recipient address.)
5285 56. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
5286 target A or AAAA records (if not already returned) without resetting the
5287 qualify_single or search_parents options of the DNS resolver. These are
5288 inappropriate in this case because the targets of MX and SRV records must
5289 be FQDNs. A broken DNS record could cause trouble if it happened to have a
5290 target that, when qualified, matched something in the local domain. These
5291 two options are now turned off when doing these lookups.
5293 57. It seems that at least some releases of Reiserfs (which does not have the
5294 concept of a fixed number of inodes) returns zero and not -1 for the
5295 number of available inodes. This interacted badly with check_spool_inodes,
5296 which assumed that -1 was the "no such thing" setting. What I have done is
5297 to check that the total number of inodes is greater than zero before doing
5298 the test of how many are available.
5300 58. When a "warn" ACL statement has a log_message modifier, the message is
5301 remembered, and not repeated. This is to avoid a lot of repetition when a
5302 message has many recipients that cause the same warning to be written.
5303 Howewer, Exim was preserving the list of already written lines for an
5304 entire SMTP session, which doesn't seem right. The memory is now reset if a
5305 new message is started.
5307 59. The "rewrite" debugging flag was not showing the result of rewriting in the
5308 debugging output unless log_rewrite was also set.
5310 60. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
5311 of (int)(handle) when we know that handle contains (void *)(-1).
5313 61. The Exim daemon panic-logs an error return when it closes the incoming
5314 connection. However "connection reset by peer" seems to be common, and
5315 isn't really an error worthy of noting specially, so that particular error
5318 62. When Exim is trying to find all the local interfaces, it used to panic and
5319 die if the ioctl to get the interface flags failed. However, it seems that
5320 on at least one OS (Solaris 9) it is possible to have an interface that is
5321 included in the list of interfaces, but for which you get a failure error
5322 for this call. This happens when the interface is not "plumbed" into a
5323 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
5324 failure of the "get flags" call assumes that the interface is down.
5326 63. Added a ${eval10: operator, which assumes all numbers are decimal. This
5327 makes life easier for people who are doing arithmetic on fields extracted
5328 from dates, where you often get leading zeros that should not be
5329 interpreted as octal.
5331 64. Added qualify_domain to the redirect router, to override the global
5334 65. If a pathologically long header line contained very many addresses (the
5335 report of this problem mentioned 10 000) and each of them was rewritten,
5336 Exim could use up a very large amount of memory. (It kept on making new
5337 copies of the header line as it rewrote, and never released the old ones.)
5338 At the expense of a bit more processing, the header rewriting function has
5339 been changed so that it no longer eats memory in this way.
5341 66. The generation of the Received: header has been moved from the time that a
5342 message starts to be received, to the time that it finishes. The timestamp
5343 in the Received: header should now be very close to that of the <= log
5344 line. There are two side-effects of this change:
5346 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
5347 logged header lines no longer include the local Received: line, because
5348 it has not yet been created. The same applies to a copy of the message
5349 that is returned to a non-SMTP sender when a message is rejected.
5351 (b) When a filter file is tested using -bf, no additional Received: header
5352 is added to the test message. After some thought, I decided that this
5355 This change does not affect the value of $received_for. It is still set
5356 after address rewriting, but before local_scan() is called.
5358 67. Installed the latest Cygwin-specific files from the Cygwin maintainer.
5360 68. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
5361 gave an unhelpful panic error message, and a defer error. I have managed to
5362 change this behaviour so that it now rejects any supplied certificate,
5363 which seems right, as the list of acceptable certificates is empty.
5365 69. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
5366 gave an unhelpful defer error. I have not managed to make this reject any
5367 supplied certificates, but the error message it gives is "no certificate
5368 supplied", which is not helpful.
5370 70. exigrep's output now also includes lines that are not associated with any
5371 message, but which match the given pattern. Implemented by a patch from
5372 Martin Sluka, which also tidied up the Perl a bit.
5374 71. Recipient callout verification, like sender verification, was using <> in
5375 the MAIL FROM command. This isn't really the right thing, since the actual
5376 sender may affect whether the remote host accepts the recipient or not. I
5377 have changed it to use the actual sender in the callout; this means that
5378 the cache record is now keyed on a recipient/sender pair, not just the
5379 recipient address. There doesn't seem to be a real danger of callout loops,
5380 since a callout by the remote host to check the sender would use <>.
5381 [SEE ABOVE: changed after hitting problems.]
5383 72. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
5384 temporary errors. However, in the case of such a code being given after
5385 the end of a data transmission (i.e. after ".") Exim was failing to write
5386 a retry record for the message. (Yes, there was some broken host that was
5387 actually sending 8xx at this point.)
5389 73. An unknown lookup type in a host list could cause Exim to panic-die when
5390 the list was checked. (An example that provoked this was putting <; in the
5391 middle of a list instead of at the start.) If this happened during a DATA
5392 ACL check, a -D file could be left lying around. This kind of configuration
5393 error no longer causes Exim to die; instead it causes a defer errror. The
5394 incident is still logged to the main and panic logs.
5396 74. Buglet left over from Exim 3 conversion. The message "too many messages
5397 in one connection" was written to the rejectlog but not the mainlog, except
5398 when address rewriting (yes!) was being logged.
5400 75. Added write_rejectlog option.
5402 76. When a system filter was run not as root (that is, when system_filter_user
5403 was set), the values of the $n variables were not being returned to the
5404 main process; thus, they were not subsequently available in the $sn
5407 77. Added +return_path_on_delivery log selector.
5409 78. A connection timeout was being treated differently from recipients deferred
5410 when testing hosts_max_try with a message that was older than the host's
5411 retry timeout. (The host should not be counted, thus allowing all hosts to
5412 be tried at least once before bouncing.) This may have been the cause of an
5413 occasionally reported bug whereby a message would remain on the queue
5414 longer than the retry timeout, but would be bounced if a delivery was
5415 forced. I say "may" because I never totally pinned down the problem;
5416 setting up timeout/retry tests is difficult. See also the next item.
5418 79. The ultimate address timeout was not being applied to errors that involved
5419 a combination of host plus message (for example, a timeout on a MAIL
5420 command). When an address resolved to a number of possible hosts, and they
5421 were not all tried for each delivery (e.g. because of hosts_max_try), a
5422 message could remain on the queue longer than the retry timeout.
5424 80. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
5427 81. Fixed an obscure SMTP outgoing bug which required at least the following
5428 conditions: (a) there was another message waiting for the same server;
5429 (b) the server returned 5xx to all RCPT commands in the first message so
5430 that the message was not completed; (c) the server dropped the connection
5431 or gave a negative response to the RSET that Exim sends to abort the
5432 transaction. The observed case was a dropped connection after DATA that had
5433 been sent in pipelining mode. That is, the server had advertised PIPELINING
5434 but was not implementing it correctly. The effect of the bug was incorrect
5435 behaviour, such as trying another host, and this could lead to a crash.
5441 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
5442 and daemon.c were passed as pointers to ints; they should have been
5443 pointers to socklen_t variables (which are typically unsigned ints).
5445 2. Some signed/unsigned type warnings in the os.c file for Linux have been
5448 3. Fixed a really odd bug that affected only the testing scheme; patching a
5449 certain fixed string in the binary changed the value of another string that
5450 happened to be identical to the end of the original first string.
5452 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
5453 name", it returns that address as the IP address. On some operating
5454 systems (e.g. Solaris), it also passes back the IP address string as the
5455 "host name". However, on others (e.g. Linux), it passes back an empty
5456 string. Exim wasn't checking for this, and was changing the host name to an
5457 empty string, assuming it had been canonicized.
5459 5. Although rare, it is permitted to have more than one PTR record for a given
5460 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
5461 all the names associated with an address, because they do in Solaris.
5462 However, it seems that they do not in Linux for data that comes from the
5463 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
5464 I found this out when I moved to a new Linux workstation and tried to run
5465 the Exim test suite.
5467 To get round this problem I have changed the code so that it now does its
5468 own call to the DNS to look up PTR records when searching for a host name.
5469 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
5470 addresses that are only in /etc/hosts are still found.
5472 This behaviour is, however, controlled by an option called host_lookup_
5473 order, which defaults to "bydns:byaddr". If people want to use the other
5474 order, or indeed, just use one or the other means of lookup, they can
5475 specify it in this variable.
5477 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
5478 some operating systems, this comes back from gethostbyaddr() as an empty
5479 string, and this is what Exim used to test for. However, it seems that in
5480 other systems, "." is yielded. Exim now tests for this case too.
5482 7. The values of check_spool_space and check_log_space are now held internally
5483 as a number of kilobytes instead of an absolute number of bytes. If a
5484 numbers is specified without 'K' or 'M', it is rounded up to the nearest
5485 kilobyte. This means that much larger values can be stored.
5487 8. Exim monitor: an attempt to get the action menu when not actually pointing
5488 at a message produces an empty menu entitled "No message selected". This
5489 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
5490 no entries in it ("Shell widget menu has zero width and/or height"). So I
5491 have added a single, blank menu entry in this case.
5493 9. Added ${quote_local_part.
5495 10. MIME decoding is now applied to the contents of Subject: header lines when
5498 11. Now that a reference to $sender_host_address automatically causes a reverse
5499 lookup to occur if necessary (4.13/18), there is no need to arrange for a
5500 host lookup before query-style lookups in lists that might use this
5501 variable. This has therefore been abolished, and the "net-" prefix is no
5502 longer necessary for query-style lookups.
5504 12. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
5505 have been a typo for LFLAGS, so it has been changed.
5507 13. The install script calls Exim with "-C /dev/null" in order to find the
5508 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
5509 to be output. Howeve, since Exim outputs its version number before the
5510 error, it didn't break the script. It just looked ugly. I fixed this by
5511 always allowing "-C /dev/null" if the caller is root.
5513 14. Ignore overlarge ACL variable number when reading spool file - insurance
5514 against a later release with more variables having written the file.
5516 15. The standard form for an IPv6 address literal was being rejected by EHLO.
5517 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
5518 this, as well as the form without the "IPv6" on the front.
5520 16. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
5521 OS/Makefile-Darwin file.
5523 17. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
5524 only to LDAP libraries that do not have LDAP_OPT_DEREF.
5526 18. After change 4.21/52, "%ld" was used to format the contents of the $inode
5527 variable. However, some OS use ints for inodes. I've added cast to long int
5528 to get rid of the compiler warning.
5530 19. I had forgotten to lock out "/../" in configuration file names when
5531 ALT_CONFIG_PREFIX was set.
5533 20. Routers used for verification do not need to specify transports. However,
5534 if such a router generated a host list, and callout was configured, Exim
5535 crashed, because it could not find a port number from the (non-existent)
5536 transport. It now assumes port 25 in this circumstance.
5538 21. Added the -t option to exigrep.
5540 22. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
5541 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
5542 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
5543 them is set, LOOKUP_LSEARCH is forced.
5545 23. "exim -bV" now outputs a list of lookups that are included in the binary.
5547 24. Added sender and host information to the "rejected by local_scan()" log
5548 line; previously there was no indication of these.
5550 25. Added .include_if_exists.
5552 26. Change 3.952/11 added an explicit directory sync on top of a file sync for
5553 Linux. It turns out that not all file systems support this. Apparently some
5554 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
5555 do it.) To cope with this, the error EINVAL, which means that sync-ing is
5556 not supported on the file descriptor, is now ignored when Exim is trying to
5557 sync a directory. This applies only to Linux.
5559 27. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
5561 28. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
5562 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
5565 29. Added support for maildirsize files from supplied patch (modified a bit).
5567 30. The use of :fail: followed by an empty string could lead Exim to respond to
5568 sender verification failures with (e.g.):
5570 550 Verification failed for <xxx>
5571 550 Sender verify failed
5573 where the first response line was missing the '-' that indicates it is not
5574 the final line of the response.
5576 31. The loop for finding the name of the user that called Exim had a hardwired
5577 limit of 10; it now uses the value of finduser_retries, which is used for
5578 all other user lookups.
5580 32. Added $received_count variable, available in data and not_smtp ACLs, and at
5583 33. Exim was neglecting to zero errno before one call of strtol() when
5584 expanding a string and expecting an integer value. On some systems this
5585 resulted in spurious "integer overflow" errors. Also, it was casting the
5586 result into an int without checking.
5588 34. Testing for a connection timeout using "timeout_connect" in the retry rules
5589 did not work. The code looks as if it has *never* worked, though it appears
5590 to have been documented since at least releast 1.62. I have made it work.
5592 35. The "timeout_DNS" error in retry rules, also documented since at least
5593 1.62, also never worked. As it isn't clear exactly what this means, and
5594 clearly it isn't a major issue, I have abolished the feature by treating it
5595 as "timeout", and writing a warning to the main and panic logs.
5597 36. The display of retry rules for -brt wasn't always showing the error code
5600 37. Added new error conditions to retry rules: timeout_A, timeout_MX,
5601 timeout_connect_A, timeout_connect_MX.
5603 38. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
5604 to the empty sender.
5606 39. The daemon was not analysing the content of -oX till after it had closed
5607 stderr and disconnected from the controlling terminal. This meant that any
5608 syntax errors were only noted on the panic log, and the return code from
5609 the command was 0. By re-arranging the code a little, I've made the
5610 decoding happen first, so such errors now appear on stderr, and the return
5611 code is 1. However, the actual setting up of the sockets still happens in
5612 the disconnected process, so errors there are still only recorded on the
5615 40. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
5616 connections (as happens on some IP stacks) was logged at start up time as
5617 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
5618 it from "IPv6 and IPv4", which means that two separate sockets are being
5621 41. The debug output for gethostbyname2() or getipnodebyname() failures now
5622 says whether AF_INET or AF_INET6 was passed as an argument.
5624 42. Exiwhat output was messed up when time zones were included in log
5627 43. Exiwhat now gives more information about the daemon's listening ports,
5628 and whether -tls-on-connect was used.
5630 44. The "port" option of the smtp transport is now expanded.
5632 45. A "message" modifier in a "warn" statement in a non-message ACL was being
5633 silently ignored. Now an error message is written to the main and panic
5636 46. There's a new ACL modifier called "logwrite" which writes to a log file
5637 as soon as it is encountered.
5639 47. Added $local_user_uid and $local_user_gid at routing time.
5641 48. Exim crashed when trying to verify a sender address that was being
5644 49. Exim was recognizing only a space character after ".include". It now also
5645 recognizes a tab character.
5647 50. Fixed several bugs in the Perl script that creates the exim.8 man page by
5648 extracting the relevant information from the specification. The man page no
5649 longer contains scrambled data for the -d option, and I've added a section
5650 at the front about calling Exim under different names.
5652 51. Added "extra_headers" argument to the "mail" command in filter files.
5654 52. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
5657 53. Installed eximstats 1.29.
5659 54. Added transport_filter_timeout as a generic transport option.
5661 55. Exim no longer adds an empty Bcc: header to messages that have no To: or
5662 Cc: header lines. This was required by RFC 822, but it not required by RFC
5665 56. Exim used to add From:, Date:, and Message-Id: header lines to any
5666 incoming messages that did not have them. Now it does so only if the
5667 message originates locally, that is, if there is no associated remote host
5668 address. When Resent- header lines are present, this applies to the Resent-
5669 lines rather than the non-Resent- lines.
5671 57. Drop incoming SMTP connection after too many syntax or protocol errors. The
5672 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
5674 58. Messages for configuration errors now include the name of the main
5675 configuration file - useful now that there may be more than one file in a
5676 list (.included file names were always shown).
5678 59. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
5679 for those rare installations that do not start the daemon as root or run it
5680 setuid root. I've cut out the call to initgroups() if the daemon is not
5683 60. The Exim user and group can now be bound into the binary as text strings
5684 that are looked up at the start of Exim's processing.
5686 61. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
5688 62. Added $mailstore_basename variable.
5690 63. Installed patch to sieve.c from Michael Haardt.
5692 64. When Exim failed to open the panic log after failing to open the main log,
5693 the original message it was trying to log was written to stderr and debug
5694 output, but if they were not available (the usual case in production), it
5695 was lost. Now it is written to syslog before the two lines that record the
5696 failures to open the logs.
5698 65. Users' Exim filters run in subprocesses under the user's uid. It is
5699 possible for a "deliver" command or an alias in a "personal" command to
5700 provoke an address rewrite. If logging of address rewriting is configured,
5701 this fails because the process is not running as root or exim. There may be
5702 a better way of dealing with this, but for the moment (because 4.30 needs
5703 to be released), I have disabled address rewrite logging when running a
5704 filter in a non-root, non-exim process.
5710 1. The buildconfig auxiliary program wasn't quoting the value set for
5711 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
5712 not defined. This bug was masked in 4.22 by the effect that was fixed in
5715 2. Some messages that were rejected after a message id was allocated were
5716 shown as "incomplete" by exigrep. It no longer does this for messages that
5717 are rejected by local_scan() or the DATA or non-SMTP ACLs.
5719 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
5720 have allow_domain_literals set, the ID did not get logged in the <= line.
5721 Domain literals are now always recognized in Message-ID: header lines.
5723 4. The first argument for a ${extract expansion item is the key name or field
5724 number. Leading and trailing spaces in this item were not being ignored,
5725 causing some misleading effects.
5727 5. When deliver_drop_privilege was set, single queue runner processes started
5728 manually (i.e. by the command "exim -q") or by the daemon (which uses the
5729 same command in the process it spins off) were not dropping privilege.
5731 6. When the daemon running as "exim" started a queue runner, it always
5732 re-executed Exim in the spun-off process. This is a waste of effort when
5733 deliver_drop_privilege is set. The new process now just calls the
5734 queue-runner function directly.
5740 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
5743 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
5744 ignored. Though the use of -oP was forcing the writing of a pid file, it
5745 was always written to the default place.
5747 3. If the message "no IP address found for host xxxx" is generated during
5748 incoming verification, it is now followed by identification of the incoming
5749 connection (so you can more easily find what provoked it).
5751 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
5753 5. Added some features to "harden" Exim a bit more against certain attacks:
5755 (a) There is now a build-time option called FIXED_NEVER_USERS that can
5756 be put in Local/Makefile. This is like the never_users runtime option,
5757 but it cannot be overridden. The default setting is "root".
5759 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
5760 prefix string with which any file named in a -C command line option
5763 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
5764 is retained for -C and -D only if the caller of Exim is root. Without
5765 it, the exim user may also use -C and -D and retain privilege.
5767 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
5768 command line option is disabled.
5770 6. Macro names set by the -D option must start with an upper case letter, just
5771 like macro names defined in the configuration file.
5773 7. Added "dereference=" facility to LDAP.
5775 8. Two instances of the typo "uknown" in the source files are fixed.
5777 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
5778 the Configure-Makefile script screwed up while processing it.
5780 10. Incorporated PCRE 4.4.
5782 11. The SMTP synchronization check was not operating right at the start of an
5783 SMTP session. For example, it could not catch a HELO sent before the client
5784 waited for the greeting. There is now a check for outstanding input at the
5785 point when the greeting is written. Because of the duplex, asynchronous
5786 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
5787 way, but not yet received, when the check is performed.
5789 12. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
5790 on TCP/IP sockets, because this apparently causes some broken clients to
5793 13. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
5794 unchanged) from the Cygwin maintainer.
5796 14. The code for -bV that shows what is in the binary showed "mbx" when maildir
5797 was supported instead of testing for mbx. Effectively a typo.
5799 15. The spa authenticator server code was not checking that the input it
5800 received was valid base64.
5802 16. The debug output line for the "set" modifier in ACLs was not showing the
5803 name of the variable that was being set.
5805 17. Code tidy: the variable type "vtype_string" was never used. Removed it.
5807 18. Previously, a reference to $sender_host_name did not cause a DNS reverse
5808 lookup on its own. Something else was needed to trigger the lookup. For
5809 example, a match in host_lookup or the need for a host name in a host list.
5810 Now, if $sender_host_name is referenced and the host name has not yet been
5811 looked up, a lookup is performed. If the lookup fails, the variable remains
5812 empty, and $host_lookup_failed is set to "1".
5814 19. Added "eqi" as a case-independent comparison operator.
5816 20. The saslauthd authentication condition could segfault if neither service
5817 nor realm was specified.
5819 21. If an overflowing value such as "2048M" was set for message_size_limit, the
5820 error message that was logged was misleading, and incoming SMTP
5821 connections were dropped. The message is now more accurate, and temporary
5822 errors are given to SMTP connections.
5824 22. In some error situations (such as 21 above) Exim rejects all SMTP commands
5825 (except RSET) with a 421 error, until QUIT is received. However, it was
5826 failing to send a response to QUIT.
5828 23. The HELO ACL was being run before the code for helo_try_verify_hosts,
5829 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
5830 ACL is now run after the helo_try_verify_hosts code.
5832 24. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
5833 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
5834 case-independent, so other case variants are also recognized). Apparently
5835 some systems use these upper case variants.
5837 25. If more than two messages were waiting for the same host, and a transport
5838 filter was specified for the transport, Exim sent two messages over the
5839 same TCP/IP connection, and then failed with "socket operation on non-
5840 socket" when it tried to send the third.
5842 26. Added Exim::debug_write and Exim::log_write for embedded Perl use.
5844 27. The extern definition of crypt16() in expand.c was not being excluded when
5845 the OS had its own crypt16() function.
5847 28. Added bounce_return_body as a new option, and bounce_return_size_limit
5848 as a preferred synonym for return_size_limit, both as an option and as an
5851 29. Added LIBS=-liconv to OS/Makefile-OSF1.
5853 30. Changed the default configuration ACL to relax the local part checking rule
5854 for addresses that are not in any local domains. For these addresses,
5855 slashes and pipe symbols are allowed within local parts, but the sequence
5856 /../ is explicitly forbidden.
5858 31. SPA server authentication was not clearing the challenge buffer before
5861 32. log_message in a "warn" ACL statement was writing to the reject log as
5862 well as to the main log, which contradicts the documentation and doesn't
5863 seem right (because no rejection is happening). So I have stopped it.
5865 33. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
5866 However, I am unable to do any testing of this.
5868 34. Fixed an infelicity in the appendfile transport. When checking directories
5869 for a mailbox, to see if any needed to be created, it was accidentally
5870 using path names with one or more superfluous leading slashes; tracing
5871 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
5873 35. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
5874 contents are added to the log line that is written for every discarded
5875 recipient. (Previously a log_message setting was ignored.)
5877 36. The ${quote: operator now quotes the string if it is empty.
5879 37. The install script runs exim in order to find its version number. If for
5880 some reason other than non-existence or emptiness, which it checks, it
5881 could not run './exim', it was installing it with an empty version number,
5882 i.e. as "exim-". This error state is now caught, and the installation is
5885 38. An argument was missing from the function that creates an error message
5886 when Exim fails to connect to the socket for saslauthd authentication.
5887 This could cause Exim to crash, or give a corrupted message.
5889 39. Added isip, isip4, and isip6 to ${if conditions.
5891 40. The ACL variables $acl_xx are now saved with the message, and can be
5892 accessed later in routers, transports, and filters.
5894 41. The new lookup type nwildlsearch is like wildlsearch, except that the key
5895 strings in the file are not string-expanded.
5897 42. If a MAIL command specified a SIZE value that was too large to fit into an
5898 int variable, the check against message_size_limit failed. Such values are
5899 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
5900 day this will have to be increased, but I don't think I want to be around
5901 when emails are that large.
5908 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
5909 iconv() is not standard in FreeBSD.
5911 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with
5912 IPv6 enabled. The observed symptom was a segmentation fault on return from
5913 the function os_common_find_running_interfaces() in src/os.c.
5915 3. In the check_special_case() function in daemon.c I had used "errno" as an
5916 argument name, which causes warnings on some systems. This was basically a
5917 typo, since it was named "eno" in the comments!
5919 4. The code that waits for the clock to tick (at a resolution of some fraction
5920 of a second) so as to ensure message-id uniqueness was always waiting for
5921 at least one whole tick, when it could have waited for less. [This is
5922 almost certainly not relevant at current processor speeds, where it is
5923 unlikely to ever wait at all. But we try to future-proof.]
5925 5. The function that sleeps for a time interval that includes fractions of a
5926 second contained a race. It did not block SIGALRM between setting the
5927 timer, and suspending (a couple of lines later). If the interval was short
5928 and the sigsuspend() was delayed until after it had expired, the suspension
5929 never ended. On busy systems this could lead to processes getting stuck for
5932 6. Some uncommon configurations may cause a lookup to happen in a queue runner
5933 process, before it forks any delivery processes. The open lookup caching
5934 mechanism meant that the open file or database connection was passed into
5935 the delivery process. The problem was that delivery processes always tidy
5936 up cached lookup data. This could cause a problem for the next delivery
5937 process started by the queue runner, because the external queue runner
5938 process does not know about the closure. So the next delivery process
5939 still has data in the lookup cache. In the case of a file lookup, there was
5940 no problem because closing a file descriptor in a subprocess doesn't affect
5941 the parent. However, if the lookup was caching a connection to a database,
5942 the connection was closed, and the second delivery process was likely to
5943 see errors such as "PGSQL: query failed: server closed the connection
5944 unexpectedly". The problem has been fixed by closing all cached lookups
5945 in a queue runner before running a delivery process.
5947 7. Compiler warning on Linux for the second argument of iconv(), which doesn't
5948 seem to have the "const" qualifier which it has on other OS. I've
5951 8. Change 4.21/2 was too strict. It is only if there are two authenticators
5952 *of the same type* (client or server) with the same public name that an
5953 error should be diagnosed.
5955 9. When Exim looked up a host name for an IP address, but failed to find the
5956 original IP address when looking up the host name (a safety check), it
5957 output the message "<ip address> does not match any IP for NULL", which was
5958 confusing, to say the least. The bug was that the host name should have
5959 appeared instead of "NULL".
5961 10. Since release 3.03, if Exim is called by a uid other than root or the Exim
5962 user that is built into the binary, and the -C or -D options is used, root
5963 privilege is dropped before the configuration file is read. In addition,
5964 logging is switched to stderr instead of the normal log files. If the
5965 configuration then re-defines the Exim user, the unprivileged environment
5966 is probably not what is expected, so Exim logs a panic warning message (but
5969 However, if deliver_drop_privilege is set, the unprivileged state may well
5970 be exactly what is intended, so the warning has been cut out in that case,
5971 and Exim is allowed to try to write to its normal log files.
5977 1. smtp_return_error_details was not giving details for temporary sender
5978 or receiver verification errors.
5980 2. Diagnose a configuration error if two authenticators have the same public
5983 3. Exim used not to create the message log file for a message until the first
5984 delivery attempt. This could be confusing when incoming messages were held
5985 for policy or load reasons. The message log file is now created at the time
5986 the message is received, and an initial "Received" line is written to it.
5988 4. The automatically generated man page for command line options had a minor
5989 bug that caused no ill effects; however, a more serious problem was that
5990 the procedure for building the man page automatically didn't always
5991 operate. Consequently, release 4.20 contains an out-of-date version. This
5992 shouldn't happen again.
5994 5. When building Exim with embedded Perl support, the script that builds the
5995 Makefile was calling 'perl' to find its compile-time parameters, ignoring
5996 any setting of PERL_COMMAND in Local/Makefile. This is now fixed.
5998 6. The freeze_tell option was not being used for messages that were frozen on
5999 arrival, either by an ACL or by local_scan().
6001 7. Added the smtp_incomplete_transaction log selector.
6003 8. After STARTTLS, Exim was not forgetting that it had advertised AUTH, so it
6004 was accepting AUTH without a new EHLO.
6006 9. Added tls_remember_esmtp to cope with YAEB. This allows AUTH and other
6007 ESMTP extensions after STARTTLS without a new EHLO, in contravention of the
6010 10. Logging of TCP/IP connections (when configured) now happens in the main
6011 daemon process instead of the child process, so that the TCP/IP connection
6012 count is more accurate (but it can never be perfect).
6014 11. The use of "drop" in a nested ACL was not being handled correctly in the
6015 outer ACL. Now, if condition failure induced by the nested "drop" causes
6016 the outer ACL verb to deny access ("accept" or "discard" after "endpass",
6017 or "require"), the connection is dropped.
6019 12. Similarly, "discard" in a nested ACL wasn't being handled. A nested ACL
6020 that yield "discard" can now be used with an "accept" or a "discard" verb,
6021 but an error is generated for any others (because I can't see a useful way
6022 to define what should happen).
6024 13. When an ACL is read dynamically from a file (or anywhere else), the lines
6025 are now processed in the same way as lines in the Exim configuration file.
6026 In particular, continuation lines are supported.
6028 14. Added the "dnslists = a.b.c!=n.n.n.n" feature.
6030 15. Added -ti meaning -t -i.
6032 16. Check for letters, digits, hyphens, and dots in the names of dnslist
6033 domains, and warn by logging if others are found.
6035 17. At least on BSD, alignment is not guarenteed for the array of ifreq's
6036 returned from GIFCONF when Exim is trying to find the list of interfaces on
6037 a host. The code in os.c has been modified to copy each ifreq to an aligned
6038 structure in all cases.
6040 Also, in some cases, the returned ifreq's were being copied to a 'struct
6041 ifreq' on the stack, which was subsequently passed to host_ntoa(). That
6042 means the last couple of bytes of an IPv6 address could be chopped if the
6043 ifreq contained only a normal sockaddr (14 bytes storage).
6045 18. Named domain lists were not supported in the hosts_treat_as_local option.
6046 An entry such as +xxxx was not recognized, and was treated as a literal
6049 19. Ensure that header lines added by a DATA ACL are included in the reject log
6050 if the ACL subsequently rejects the message.
6052 20. Upgrade the cramtest.pl utility script to use Digest::MD5 instead of just
6053 MD5 (which is deprecated).
6055 21. When testing a filter file using -bf, Exim was writing a message when it
6056 took the sender from a "From " line in the message, but it was not doing so
6057 when it took $return_path from a Return-Path: header line. It now does.
6059 22. If the contents of a "message" modifier for a "warn" ACL verb do not begin
6060 with a valid header line field name (a series of printing characters
6061 terminated by a colon, Exim now inserts X-ACL-Warn: at the beginning.
6063 23. Changed "disc" in the source to "disk" to conform to the documentation and
6064 the book and for uniformity.
6066 24. Ignore Sendmail's -Ooption=value command line item.
6068 25. When execve() failed while trying to run a command in a pipe transport,
6069 Exim was returning EX_UNAVAILBLE (69) from the subprocess. However, this
6070 could be confused with a return value of 69 from the command itself. This
6071 has been changed to 127, the value the shell returns if it is asked to run
6072 a non-existent command. The wording for the related log line suggests a
6073 non-existent command as the problem.
6075 26. If received_header_text expands to an empty string, do not add a Received:
6076 header line to the message. (Well, it adds a token one on the spool, but
6077 marks it "old" so that it doesn't get used or transmitted.)
6079 27. Installed eximstats 1.28 (addition of -nt option).
6081 28. There was no check for failure on the call to getsockname() in the daemon
6082 code. This can fail if there is a shortage of resources on the system, with
6083 ENOMEM, for example. A temporary error is now given on failure.
6085 29. Contrary to the C standard, it seems that in some environments, the
6086 equivalent of setlocale(LC_ALL, "C") is not obeyed at the start of a C
6087 program. Exim now does this explicitly; it affects the formatting of
6088 timestamps using strftime().
6090 30. If exiqsumm was given junk data, it threw up some uninitialized variable
6091 complaints. I've now initialized all the variables, to avoid this.
6093 32. Header lines added by a system filter were not being "seen" during
6094 transport-time rewrites.
6096 33. The info_callback() function passed to OpenSSL is set up with type void
6097 (*)(SSL *, int, int), as described somewhere. However, when calling the
6098 function (actually a macro) that sets it up, the type void(*)() is
6099 expected. I've put in a cast to prevent warnings from picky compilers.
6101 34. If a DNS black list lookup found a CNAME record, but there were no A
6102 records associated with the domain it pointed at, Exim crashed.
6104 35. If a DNS black list lookup returned more than one A record, Exim ignored
6105 all but the first. It now scans all returned addresses if a particular IP
6106 value is being sought. In this situation, the contents of the
6107 $dnslist_value variable are a list of all the addresses, separated by a
6110 36. Tightened up the rules for host name lookups using reverse DNS. Exim used
6111 to accept a host name and all its aliases if the forward lookup for any of
6112 them yielded the IP address of the incoming connection. Now it accepts only
6113 those names whose forward lookup yields the correct IP address. Any other
6114 names are discarded. This closes a loophole whereby a rogue DNS
6115 administrator could create reverse DNS records to break through a
6116 wildcarded host restriction in an ACL.
6118 37. If a user filter or a system filter that ran in a subprocess used any of
6119 the numerical variables ($1, $2 etc), or $thisaddress, in a pipe command,
6120 the wrong values were passed to the pipe command ($thisaddress had the
6121 value of $0, $0 had the value of $1, etc). This bug was introduced by
6122 change 4.11/101, and not discovered because I wrote an inadequate test. :-(
6124 38. Improved the line breaking for long SMTP error messages from ACLs.
6125 Previously, if there was no break point between 40 and 75 characters, Exim
6126 left the rest of the message alone. Two changes have been made: (a) I've
6127 reduced the minimum length to 35 characters; (b) if it can't find a break
6128 point between 35 and 75 characters, it looks ahead and uses the first one
6129 that it finds. This may give the occasional overlong line, but at least the
6130 remaining text gets split now.
6132 39. Change 82 of 4.11 was unimaginative. It assumed the limit on the number of
6133 file descriptors might be low, and that setting 1000 would always raise it.
6134 It turns out that in some environments, the limit is already over 1000 and
6135 that lowering it causes trouble. So now Exim takes care not to decrease it.
6137 40. When delivering a message, the value of $return_path is set to $sender_
6138 address at the start of routing (routers may change the value). By an
6139 oversight, this default was not being set up when an address was tested by
6140 -bt or -bv, which affected the outcome if any router or filter referred to
6143 41. The idea of the "warn" ACL verb is that it adds a header or writes to the
6144 log only when "message" or "log_message" are set. However, if one of the
6145 conditions was an address verification, or a call to a nested ACL, the
6146 messages generated by the underlying test were being passed through. This
6147 no longer happens. The underlying message is available in $acl_verify_
6148 message for both "message" and "log_message" expansions, so it can be
6149 passed through if needed.
6151 42. Added RFC 2047 interpretation of header lines for $h_ expansions, with a
6152 new expansion $bh_ to give the encoded byte string without charset
6153 translation. Translation happens only if iconv() is available; HAVE_ICONV
6154 indicates this at build time. HEADERS_CHARSET gives the charset to
6155 translate to; headers_charset can change it in the configuration, and
6156 "headers charset" can change it in an individual filter file.
6158 43. Now that we have a default RFC 2047 charset (see above), the code in Exim
6159 that creates RFC 2047 encoded "words" labels them as that charset instead
6160 of always using iso-8859-1. The cases are (i) the explicit ${rfc2047:
6161 expansion operator; (ii) when Exim creates a From: line for a local
6162 message; (iii) when a header line is rewritten to include a "phrase" part.
6164 44. Nasty bug in exiqsumm: the regex to skip already-delivered addresses was
6165 buggy, causing it to skip the first lines of messages whose message ID
6166 ended in 'D'. This would not have bitten before Exim release 4.14, because
6167 message IDs were unlikely to end in 'D' before then. The effect was to have
6168 incorrect size information for certain domains.
6170 45. #include "config.h" was missing at the start of the crypt16.c module. This
6171 caused trouble on Tru64 (aka OSF1) systems, because HAVE_CRYPT16 was not
6174 46. If there was a timeout during a "random" callout check, Exim treated it as
6175 a failure of the random address, and carried on sending RSET and the real
6176 address. If the delay was just some slowness somewhere, the response to the
6177 original RCPT would be taken as a response to RSET and so on, causing
6178 mayhem of various kinds.
6180 47. Change 50 for 4.20 was a heap of junk. I don't know what I was thinking
6181 when I implemented it. It didn't allow for the fact that some option values
6182 may legitimatetly be negative (e.g. size_addition), and it didn't even do
6183 the right test for positive values.
6185 48. Domain names in DNS records are case-independent. Exim always looks them up
6186 in lower case. Some resolvers return domain names in exactly the case they
6187 appear in the zone file, that is, they may contain uppercase letters. Not
6188 all resolvers do this - some return always lower case. Exim was treating a
6189 change of case by a resolver as a change of domain, similar to a widening
6190 of a domain abbreviation. This triggered its re-routing code and so it was
6191 trying to route what was effectively the same domain again. This normally
6192 caused routing to fail (because the router wouldn't handle the domain
6193 twice). Now Exim checks for this case specially, and just changes the
6194 casing of the domain that it ultimately uses when it transmits the message
6197 49. Added Sieve (RFC 3028) support, courtesy of Michael Haardt's contributed
6200 50. If a filter generated a file delivery with a non-absolute name (possible if
6201 no home directory exists for the router), the forbid_file option was not
6204 51. Added '&' feature to dnslists, to provide bit mask matching in addition to
6205 the existing equality matching.
6207 52. Exim was using ints instead of ino_t variables in some places where it was
6208 dealing with inode numbers.
6210 53. If TMPDIR is defined in Local/Makefile (default in src/EDITME is
6211 TMPDIR="/tmp"), Exim checks for the presence of an environment variable
6212 called TMPDIR, and if it finds it is different, it changes its value.
6214 54. The smtp_printf() function is now made available to local_scan() so
6215 additional output lines can be written before returning. There is also an
6216 smtp_fflush() function to enable the detection of a dropped connection.
6217 The variables smtp_input and smtp_batched_input are exported to
6220 55. Changed the default runtime configuration: the message "Unknown user"
6221 has been removed from the ACL, and instead placed on the localuser router,
6222 using the cannot_route_message feature. This means that any verification
6223 failures that generate their own messages won't get overridden. Similarly,
6224 the "Unrouteable address" message that was in the ACL for unverifiable
6225 relay addresses has also been removed.
6227 56. Added hosts_avoid_esmtp to the smtp transport.
6229 57. The exicyclog script was not checking for the esoteric option
6230 CONFIGURE_FILE_USE_EUID in the Local/Makefile. It now does this, but it
6231 will work only if exicyclog is run under the appropriate euid.
6233 58. Following a discussion on the list, the rules by which Exim recognises line
6234 endings on incoming messages have been changed. The -dropcr and drop_cr
6235 options are now no-ops, retained only for backwards compatibility. The
6236 following line terminators are recognized: LF CRLF CR. However, special
6237 processing applies to CR:
6239 (i) The sequence CR . CR does *not* terminate an incoming SMTP message,
6240 nor a local message in the state where . is a terminator.
6242 (ii) If a bare CR is encountered in a header line, an extra space is added
6243 after the line terminator so as not to end the header. The reasoning
6244 behind this is that bare CRs in header lines are most likely either
6245 to be mistakes, or people trying to play silly games.
6247 59. The size of a message, as listed by "-bp" or in the Exim monitor window,
6248 was being incorrectly given as 18 bytes larger than it should have been.
6249 This is a VOB (very old bug).
6251 60. This may never have affected anything current, but just in case it has:
6252 When the local host is found other than at the start of a list of hosts,
6253 the local host, those with the same MX, and any that follow, are discarded.
6254 When the list in question was part of a longer list of hosts, the following
6255 hosts (not currently being processed) were also being discarded. This no
6256 longer happens. I'm not sure if this situation could ever has previously
6259 61. Added the "/MX" feature to lists of hosts in the manualroute and query
6262 62. Whenever Exim generates a new message, it now adds an Auto-Submitted:
6263 header. This is something that is recommended in a new Internet Draft, and
6264 is something that is documented as being done by Sendmail. There are two
6265 possible values. For messages generated by the autoreply transport, Exim
6268 Auto-Submitted: auto-replied
6270 whereas for all other generated messages (e.g. bounces) it adds
6272 Auto-Submitted: auto-generated
6274 63. The "personal" condition in filters now includes a test for the
6275 Auto-Submitted: header. If it contains the string "auto-" the message it
6276 not considered personal.
6278 64. Added rcpt_include_affixes as a generic transport option.
6280 65. Added queue_only_override (default true).
6282 66. Added the syslog_duplication option.
6284 67. If what should have been the first header line of a message consisted of
6285 a space followed by a colon, Exim was mis-interpreting it as a header line.
6286 It isn't of course - it is syntactically invalid and should therefore be
6287 treated as the start of the message body. The misbehaviour could have
6288 caused a number of strange effects, including loss of data in subsequent
6289 header lines, and spool format errors.
6291 68. Formerly, the AUTH parameter on a MAIL command was trusted only if the
6292 client host had authenticated. This control can now be exercised by an ACL
6293 for more flexibility.
6295 69. By default, callouts do not happen when testing with -bh. There is now a
6296 variant, -bhc, which does actually run the callout code, including
6297 consulting and updating the callout cache.
6299 70. Added support for saslauthd authentication, courtesy of Alexander
6302 71. If statvfs() failed on the spool or log directories while checking their
6303 size for availability, Exim confusingly gave the error "space shortage".
6304 Furthermore, in debugging mode it crashed with a floating point exception.
6305 These checks are done if check_{spool,log}_{space,inodes} are set, and when
6306 an SMTP message arrives with SIZE= on the MAIL command. As this is a really
6307 serious problem, Exim now writes to the main and panic logs when this
6308 happens, with details of the failure. It then refuses to accept the
6309 incoming message, giving the message "spool directory problem" or "log
6310 directory problem" with a 421 code for SMTP messages.
6312 72. When Exim is about to re-exec itself, it ensures that the file descriptors
6313 0, 1, and 2 exist, because some OS complain for execs without them (see
6314 ChangeLog 4.05/30). If necessary, Exim opens /dev/null to use for these
6315 descriptors. However, the code omitted to check that the open succeeded,
6316 causing mysterious errors if for some reason the permissions on /dev/null
6317 got screwed. Now Exim writes a message to the main and panic logs, and
6318 bombs out if it can't open /dev/null.
6320 73. Re-vamped the way daemon_smtp_port, local_interfaces, and -oX work and
6321 interact so that it is all more flexible. It is supposed to remain
6322 backwards compatible. Also added extra_local_interfaces.
6324 74. Invalid data sent to a SPA (NTLM) server authenticator could cause the code
6325 to bomb out with an assertion failure - to the client this appears as a
6326 connection drop. This problem occurs in the part of the code that was taken
6327 from the Samba project. Fortunately, the assertion is in a very simple
6328 function, so I have fixed this by reproducing the function inline in the
6329 one place where it is called, and arranging for authentication to fail
6330 instead of killing the process with assert().
6332 75. The SPA client code was not working when the server requested OEM rather
6333 than Unicode encoding.
6335 76. Added code to make require_files with a specific uid setting more usable in
6336 the case where statting the file as root fails - usually a non-root-mounted
6337 NFS file system. When this happens and the failure is EACCES, Exim now
6338 forks a subprocess and does the per-uid checking as the relevant uid.
6340 77. Added process_log_path.
6342 78. If log_file_path was not explicitly set, a setting of check_log_space or
6343 check_log_inodes was ignored.
6345 79. If a space check for the spool or log partitions fails, the incident is now
6346 logged. Of course, in the latter case the data may get lost...
6348 80. Added the %p formatting code to string_format() so that it can be used to
6349 print addresses in debug_print(). Adjusted all the address printing in the
6350 debugging in store.c to use %p rather than %d.
6352 81. There was a concern that a line of code in smtp_in.c could overflow a
6353 buffer if a HELO/EHLO command was given followed by 500 or so spaces. As
6354 initially expressed, the concern was not well-founded, because trailing
6355 spaces are removed early. However, if the trailing spaces were followed by
6356 a NULL, they did not get removed, so the overflow was possible. Two fixes
6359 (a) I re-wrote the offending code in a cleaner fashion.
6360 (b) If an incoming SMTP command contains a NULL character, it is rejected
6363 82. When Exim changes uid/gid to the Exim user at daemon start time, it now
6364 runs initgroups(), so that if the Exim user is in any additional groups,
6365 they will be used during message reception.
6371 The change log for 4.20 and earlier releases has been archived.
git://git.exim.org / users / jgh / exim.git / blob