1 Change log file for Exim from version 4.21
2 -------------------------------------------
7 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
10 JH/02 The smtp transport option "multi_domain" is now expanded.
12 JH/03 The smtp transport now requests PRDR by default, if the server offers
15 JH/04 Certificate name checking on server certificates, when exim is a client,
16 is now done by default. The transport option tls_verify_cert_hostname
17 can be used to disable this per-host. The build option
18 EXPERIMENTAL_CERTNAMES is withdrawn.
20 JH/05 The value of the tls_verify_certificates smtp transport and main options
21 default to the word "system" to access the system default CA bundle.
22 For GnuTLS, only version 3.0.20 or later.
24 JH/06 Verification of the server certificate for a TLS connection is now tried
25 (but not required) by default. The verification status is now logged by
26 default, for both outbound TLS and client-certificate supplying inbound
29 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
32 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
33 Status Notification (bounce) messages are now MIME format per RFC 3464.
34 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
35 under the control of the dsn_advertise_hosts option, and routers may
36 have a dsn_lasthop option.
38 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
39 default, modifiable by a malware= option. The list separator for
40 the options can now be changed in the usual way. Bug 68.
42 JH/10 The smtp_receive_timeout main option is now expanded before use.
44 JH/11 The incoming_interface log option now also enables logging of the
45 local interface on delivery outgoing connections.
47 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
48 if the interface and destination host and port all match.
50 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
53 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
54 Patch from Andrew Lewis.
56 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
57 now supports optional time-restrictions, weighting, and priority
58 modifiers per server. Patch originally by <rommer@active.by>.
60 JH/16 The spamd_address main option now supports a mixed list of local
61 and remote servers. Remote servers can be IPv6 addresses, and
64 JH/17 Bug 68: The spamd_address main option now supports an optional
65 timeout value per server.
67 JH/18 Bug 1581: Router and transport options headers_add/remove can
68 now have the list separator specified.
70 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
73 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
76 JH/21 Support for the A6 type of dns record is withdrawn.
78 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
79 rather than the verbs used.
81 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
82 from 255 to 1024 chars.
84 JH/24 Verification callouts now attempt to use TLS by default.
86 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
87 are generic router options now. The defaults didn't change.
89 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
90 Original patch from Alexander Shikoff, worked over by JH.
92 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
93 files if ZCAT_COMMAND is not executable.
95 JH/26 Bug 1539: Add timout/retry options on dnsdb lookups.
97 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
99 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
100 Normally benign, it bites when the pair was led to by a CNAME;
101 modern usage is to not canoicalize the domain to a CNAME target
102 (and we were inconsistent anyway for A-only vs AAAA+A).
104 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
106 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
107 when evaluating $sender_host_dnssec.
109 JH/31 Check the HELO verification lookup for DNSSEC, adding new
110 $sender_helo_dnssec variable.
112 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
117 TL/01 When running the test suite, the README says that variables such as
118 no_msglog_check are global and can be placed anywhere in a specific
119 test's script, however it was observed that placement needed to be near
120 the beginning for it to behave that way. Changed the runtest perl
121 script to read through the entire script once to detect and set these
122 variables, reset to the beginning of the script, and then run through
123 the script parsing/test process like normal.
125 TL/02 The BSD's have an arc4random API. One of the functions to induce
126 adding randomness was arc4random_stir(), but it has been removed in
127 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
128 function when detected.
130 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
131 cause callback expansion.
133 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
134 syntax errors in an expansion can be treated as a string instead of
135 logging or causing an error, due to the internal use of bool_lax
136 instead of bool when processing it.
138 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
139 server certificates when making smtp deliveries.
141 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
143 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
145 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
147 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
148 Merged patch from Sebastian Wiedenroth.
150 JH/05 Fix results-pipe from transport process. Several recipients, combined
151 with certificate use, exposed issues where response data items split
152 over buffer boundaries were not parsed properly. This eventually
153 resulted in duplicates being sent. This issue only became common enough
154 to notice due to the introduction of conection certificate information,
155 the item size being so much larger. Found and fixed by Wolfgang Breyha.
157 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
158 size buffer was used, resulting in syntax errors when an expansion
161 JH/07 Add support for directories of certificates when compiled with a GnuTLS
162 version 3.3.6 or later.
164 JH/08 Rename the TPDA expermimental facility to Event Actions. The #ifdef
165 is EXPERIMENTAL_EVENT, the main-configuration and transport options
166 both become "event_action", the variables become $event_name, $event_data
167 and $event_defer_errno. There is a new variable $verify_mode, usable in
168 routers, transports and related events. The tls:cert event is now also
169 raised for inbound connections, if the main configuration event_action
172 TL/06 In test suite, disable OCSP for old versions of openssl which contained
173 early OCSP support, but no stapling (appears to be less than 1.0.0).
175 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
176 server certificate names available under the smtp transport option
177 "tls_verify_cert_hostname" now do not permit multi-component wildcard
180 JH/10 Time-related extraction expansions from certificates now use the main
181 option "timezone" setting for output formatting, and are consistent
182 between OpenSSL and GnuTLS compilations. Bug 1541.
184 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
185 encoded parameter in the incoming message. Bug 1558.
187 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
188 include certificate info, eximon was claiming there were spoolfile
191 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
193 JH/14 Log delivery-related information more consistently, using the sequence
194 "H=<name> [<ip>]" wherever possible.
196 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
197 are problematic for Debian distribution, omit them from the release
200 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
202 JH/16 Fix string representation of time values on 64bit time_t anchitectures.
205 JH/17 Fix a null-indirection in certextract expansions when a nondefault
206 output list separator was used.
211 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
212 checkers that were complaining about end of non-void function with no
215 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
216 This was a regression intruduced in 4.83 by another bugfix.
218 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
220 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
221 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
227 TF/01 Correctly close the server side of TLS when forking for delivery.
229 When a message was received over SMTP with TLS, Exim failed to clear up
230 the incoming connection properly after forking off the child process to
231 deliver the message. In some situations the subsequent outgoing
232 delivery connection happened to have the same fd number as the incoming
233 connection previously had. Exim would try to use TLS and fail, logging
234 a "Bad file descriptor" error.
236 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
237 utilities have not been installed.
239 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
240 temporary space as the ACL may create new global variables.
242 TL/01 LDAP support uses per connection or global context settings, depending
243 upon the detected version of the libraries at build time.
245 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
246 to extract and use the src ip:port in logging and expansions as if it
247 were a direct connection from the outside internet. PPv2 support was
248 updated based on HAProxy spec change in May 2014.
250 JH/02 Add ${listextract {number}{list}{success}{fail}}.
252 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
253 Properly escape header and check for NULL return.
255 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
258 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
260 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
261 characters in header names, implemented as a verify condition.
262 Contributed by Michael Fischer v. Mollard.
264 TL/05 Rename SPF condition results err_perm and err_temp to standardized
265 results permerror and temperror. Previous values are deprecated but
266 still accepted. In a future release, err_perm and err_temp will be
267 completely removed, which will be a backward incompatibility if the
268 ACL tests for either of these two old results. Patch contributed by
269 user bes-internal on the mailing list.
271 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
273 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
274 selectors, in both main and reject logs.
276 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
279 JH/07 Add malware type "sock" for talking to simple daemon.
281 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
283 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
284 routers/transports under cutthrough routing.
286 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
287 numbers. Touch up "bool" conditional to keep the same definition.
289 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
291 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
293 JH/12 Expand items in router/transport headers_add or headers_remove lists
294 individually rather than the list as a whole. Bug 1452.
296 Required for reasonable handling of multiple headers_ options when
297 they may be empty; requires that headers_remove items with embedded
298 colons must have them doubled (or the list-separator changed).
300 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
301 view the policy declared in the DMARC record. Currently, $dmarc_status
302 is a combined value of both the record presence and the result of the
305 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
307 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
308 dnslookup router and the smtp transport (applying to the forward
311 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
312 of ldap servers used for a specific lookup. Patch provided by Heiko
315 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
316 New variable $lookup_dnssec_authenticated for observability.
318 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
319 Patch submitted by Lars Timman.
321 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
323 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
324 Requires trusted mode and valid format message id, aborts otherwise.
325 Patch contributed by Heiko Schlichting.
327 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
328 certextract with support for various fields. Bug 1358.
330 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
331 is requested by default, modifiable by smtp transport option
334 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
335 operate on certificate variables to give certificate fingerprints
336 Also new ${sha256:cert_variable}.
338 JH/23 The PRDR feature is moved from being Experimental into the mainline.
340 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
341 Christian Aistleitner.
343 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
345 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
346 file. Patch from Wolfgang Breyha.
348 JH/25 Expand the coverage of the delivery $host and $host_address to
349 client authenticators run in verify callout. Bug 1476.
351 JH/26 Port service names are now accepted for tls_on_connect_ports, to
352 align with daemon_smtp_ports. Bug 72.
354 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
355 support and error reporting did not work properly.
357 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
358 and is readable. Patch from Andrew Colin Kissa.
360 TL/14 Enhance documentation of ${run expansion and how it parses the
361 commandline after expansion, particularly in the case when an
362 unquoted variable expansion results in an empty value.
364 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
366 PP/02 Fix internal collision of T_APL on systems which support RFC3123
367 by renaming away from it. Addresses GH issue 15, reported by
370 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
372 TL/15 SECURITY: prevent double expansion in math comparison functions
373 (can expand unsanitized data). Not remotely exploitable.
380 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
382 PP/02 Make -n do something, by making it not do something.
383 When combined with -bP, the name of an option is not output.
385 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
388 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
389 $sender_host_name and config options to manage this, and basic check
392 PP/05 DSCP support for outbound connections and control modifier for inbound.
394 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
395 (Only plugin which currently uses this is kerberos4, which nobody should
396 be using, but we should make it available and other future plugins might
397 conceivably use it, even though it would break NAT; stuff *should* be
398 using channel bindings instead).
400 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
401 name; added for Sendmail compatibility; requires admin caller.
402 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
403 just ignore it); requires trusted caller.
404 Also parse but ignore: -Ac -Am -X<logfile>
407 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
409 TL/02 Add +smtp_confirmation as a default logging option.
411 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
412 Patch by Magnus Holmgren from 2007-02-20.
414 TL/04 Bugzilla 1281 - Spec typo.
415 Bugzilla 1283 - Spec typo.
416 Bugzilla 1290 - Spec grammar fixes.
418 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
420 TL/06 Add Experimental DMARC support using libopendmarc libraries.
422 TL/07 Fix an out of order global option causing a segfault. Reported to dev
423 mailing list by by Dmitry Isaikin.
425 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
427 JH/02 Support "G" suffix to numbers in ${if comparisons.
429 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
431 NM/01 Bugzilla 1197 - Spec typo
432 Bugzilla 1196 - Spec examples corrections
434 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
436 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
437 gnutls_enable_pkcs11, but renamed to more accurately indicate its
440 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
441 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
443 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
444 "acl {{name}{arg}...}", and optional args on acl condition
447 JH/05 Permit multiple router/transport headers_add/remove lines.
449 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
451 JH/07 Avoid using a waiting database for a single-message-only transport.
452 Performance patch from Paul Fisher. Bugzilla 1262.
454 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
457 JH/09 Add $headers_added variable, with content from use of ACL modifier
458 add_header (but not yet added to the message). Bugzilla 199.
460 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
461 Pulled from Bugzilla 817 by Wolfgang Breyha.
463 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
465 (nb: this is the same fix as in Exim 4.80.1)
467 JH/11 Add A= logging on delivery lines, and a client_set_id option on
470 JH/12 Add optional authenticated_sender logging to A= and a log_selector
473 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
475 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
476 advertise SMTP AUTH mechanism to us, instead of a generic
477 protocol violation error. Also, make Exim more robust to bad
478 data from the Dovecot auth socket.
480 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
482 When a queue runner is handling a message, Exim first routes the
483 recipient addresses, during which it prunes them based on the retry
484 hints database. After that it attempts to deliver the message to
485 any remaining recipients. It then updates the hints database using
488 So if a recipient address works intermittently, it can get repeatedly
489 deferred at routing time. The retry hints record remains fresh so the
490 address never reaches the final cutoff time.
492 This is a fairly common occurrence when a user is bumping up against
493 their storage quota. Exim had some logic in its local delivery code
494 to deal with this. However it did not apply to per-recipient defers
495 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
497 This change adds a proper retry rule check during routing so that the
498 final cutoff time is checked against the message's age. We only do
499 this check if there is an address retry record and there is not a
500 domain retry record; this implies that previous attempts to handle
501 the address had the retry_use_local_parts option turned on. We use
502 this as an approximation for the destination being like a local
503 delivery, as in LMTP.
505 I suspect this new check makes the old local delivery cutoff check
506 redundant, but I have not verified this so I left the code in place.
508 TF/02 Correct gecos expansion when From: is a prefix of the username.
510 Test 0254 submits a message to Exim with the header
514 When I ran the test suite under the user fanf2, Exim expanded
515 the header to contain my full name, whereas it should have added
516 a Resent-Sender: header. It erroneously treats any prefix of the
517 username as equal to the username.
519 This change corrects that bug.
521 GF/01 DCC debug and logging tidyup
522 Error conditions log to paniclog rather than rejectlog.
523 Debug lines prefixed by "DCC: " to remove any ambiguity.
525 TF/03 Avoid unnecessary rebuilds of lookup-related code.
527 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
528 Bug spotted by Jeremy Harris; was flawed since initial commit.
529 Would have resulted in OCSP responses post-SNI triggering an Exim
530 NULL dereference and crash.
532 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
534 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
535 Bug detection, analysis and fix by Samuel Thibault.
536 Bugzilla 1331, Debian bug #698092.
538 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
540 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
541 Server implementation by Todd Lyons, client by JH.
542 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
543 config variable "prdr_enable" controls whether the server
544 advertises the facility. If the client requests PRDR a new
545 acl_data_smtp_prdr ACL is called once for each recipient, after
546 the body content is received and before the acl_smtp_data ACL.
547 The client is controlled by bolth of: a hosts_try_prdr option
548 on the smtp transport, and the server advertisement.
549 Default client logging of deliveries and rejections involving
550 PRDR are flagged with the string "PRDR".
552 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
553 fclose(). Diagnosis by Todd Lyons.
555 PP/17 Update configure.default to handle IPv6 localhost better.
556 Patch by Alain Williams (plus minor tweaks).
559 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
560 This is now consistent with GnuTLS, and is now documented: the
561 previous undocumented portable approach to treating the option as
562 unset was to force an expansion failure. That still works, and
563 an empty string is now equivalent.
565 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
566 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
567 not performing validation itself.
569 PP/20 Added force_command boolean option to pipe transport.
570 Patch from Nick Koston, of cPanel Inc.
572 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
575 TF/04 Added udpsend ACL modifer and hexquote expansion operator
577 PP/21 Fix eximon continuous updating with timestamped log-files.
578 Broken in a format-string cleanup in 4.80, missed when I repaired the
579 other false fix of the same issue.
580 Report and fix from Heiko Schlichting.
583 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
584 Report from Prashanth Katuri.
586 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
587 It's SecureTransport, so affects any MacOS clients which use the
588 system-integrated TLS libraries, including email clients.
590 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
591 using a MIME ACL for non-SMTP local injection.
592 Report and assistance in diagnosis by Warren Baker.
594 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
596 JH/16 Fix comparisons for 64b. Bugzilla 1385.
598 TL/09 Add expansion variable $authenticated_fail_id to keep track of
599 last id that failed so it may be referenced in subsequent ACL's.
601 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
604 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
605 ldap library initialization, allowing self-signed CA's to be
606 used. Also properly sets require_cert option later in code by
607 using NULL (global ldap config) instead of ldap handle (per
608 session). Bug diagnosis and testing by alxgomz.
610 TL/12 Enhanced documentation in the ratelimit.pl script provided in
611 the src/util/ subdirectory.
613 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
614 renamed to Transport Post Delivery Action by Jeremy Harris, as
617 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
618 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
619 redis_servers = needs to be configured which will be used by the redis
620 lookup. Patch from Warren Baker, of The Packet Hub.
622 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
624 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
625 hostname or reverse DNS when processing a host list. Used suggestions
626 from multiple comments on this bug.
628 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
630 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
631 Missed a few lines, added it to make the runtest require no keyboard
634 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
635 contains upper case chars. Make router use caseful_local_part.
637 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
638 support when GnuTLS has been built with p11-kit.
644 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
646 This, or similar/improved, will also be change PP/11 of 4.82.
652 PP/01 Handle short writes when writing local log-files.
653 In practice, only affects FreeBSD (8 onwards).
654 Bugzilla 1053, with thanks to Dmitry Isaikin.
656 NM/01 Bugzilla 949 - Documentation tweak
658 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
661 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
663 PP/02 Implemented gsasl authenticator.
665 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
667 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
668 `pkg-config foo` for cflags/libs.
670 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
671 with rest of GSASL and with heimdal_gssapi.
673 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
674 `pkg-config foo` for cflags/libs for the TLS implementation.
676 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
677 properties get this fed in as external SSF. A number of robustness
678 and debugging improvements to the cyrus_sasl authenticator.
680 PP/08 cyrus_sasl server now expands the server_realm option.
682 PP/09 Bugzilla 1214 - Log authentication information in reject log.
683 Patch by Jeremy Harris.
685 PP/10 Added dbmjz lookup type.
687 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
689 PP/12 MAIL args handles TAB as well as SP, for better interop with
690 non-compliant senders.
691 Analysis and variant patch by Todd Lyons.
693 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
694 Bug report from Lars Müller <lars@samba.org> (via SUSE),
695 Patch from Dirk Mueller <dmueller@suse.com>
697 PP/13 tls_peerdn now print-escaped for spool files.
698 Observed some $tls_peerdn in wild which contained \n, which resulted
699 in spool file corruption.
701 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
702 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
703 or write after TLS renegotiation, which otherwise led to messages
706 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
707 as a tracking header (ie: a signed header comes before the signature).
708 Patch from Wolfgang Breyha.
710 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
711 comma-sep list; embedded commas doubled.
713 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
715 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
717 Report and patch from Dmitry Banschikov.
719 PP/16 Removed "dont_insert_empty_fragments" fron "openssl_options".
720 Removed SSL_clear() after SSL_new() which led to protocol negotiation
721 failures. We appear to now support TLS1.1+ with Exim.
723 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
724 lets Exim select keys and certificates based upon TLS SNI from client.
725 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
726 before an outbound SMTP session. New log_selector, +tls_sni.
728 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
729 NULL dereference. Report and patch from Alun Jones.
731 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
732 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
733 Not seeing resolver debug output on NetBSD, but suspect this is a
734 resolver implementation change.
736 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
737 Left warnings. Added "eximon gdb" invocation mode.
739 PP/21 Defaulting "accept_8bitmime" to true, not false.
741 PP/22 Added -bw for inetd wait mode support.
743 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
744 locate the relevant includes and libraries. Made this the default.
746 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
747 Bugzilla 1246, report and most of solution from Tomasz Kusy.
749 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
750 This may cause build issues on older platforms.
752 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
753 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
754 gnutls_require_mac & gnutls_require_protocols (no longer supported).
755 Added SNI support via GnuTLS too.
756 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
758 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
760 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
761 Applied second patch from Janne, implementing suggestion to default
762 multiple-strings-in-record handling to match SPF spec.
764 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
766 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
767 read-only, out of scope).
768 Patch from Wolfgang Breyha, report from Stuart Northfield.
770 PP/29 Fix three issues highlighted by clang analyser static analysis.
771 Only crash-plausible issue would require the Cambridge-specific
772 iplookup router and a misconfiguration.
773 Report from Marcin Mirosław.
775 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
777 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
778 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
779 As part of this, removing so much warning spew let me fix some minor
780 real issues in debug logging.
782 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
783 assignment on my part. Fixed.
785 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
786 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
787 Janne Snabb (who went above and beyond: thank you).
789 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
790 string otherwise requires a connection and a bunch more work and it's
791 relatively easy to get wrong. Should also expose TLS library linkage
794 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
795 64-bit ${eval} (JH/03).
797 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
798 GNU libc to support some of the 64-bit stuff, should not lead to
799 conflicts. Defined before os.h is pulled in, so if a given platform
800 needs to override this, it can.
802 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
803 protection layer was required, which is not implemented.
804 Bugzilla 1254, patch from Wolfgang Breyha.
806 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
807 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
808 tls_dhparam take prime identifiers. Also unbreak combination of
809 OpenSSL+DH_params+TLSSNI.
811 PP/39 Disable SSLv2 by default in OpenSSL support.
817 PP/01 Solaris build fix for Oracle's LDAP libraries.
818 Bugzilla 1109, patch from Stephen Usher.
820 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
822 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
825 TF/02 Fix a couple more cases where we did not log the error message
826 when unlink() failed. See also change 4.74-TF/03.
828 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
829 lock up or crash if it happened to be inside a call to libc when it
830 got a SIGUSR1 from exiwhat.
832 The SIGUSR1 handler appends the current process status to the process
833 log which is later printed by exiwhat. It used to use the general
834 purpose logging code to do this, but several functions it calls are
835 not safe for signals.
837 The new output code in the SIGUSR1 handler is specific to the process
838 log, and simple enough that it's easy to inspect for signal safety.
839 Removing some special cases also simplifies the general logging code.
840 Removing the spurious timestamps from the process log simplifies
843 TF/04 Improved ratelimit ACL condition.
845 The /noupdate option has been deprecated in favour of /readonly which
846 has clearer semantics. The /leaky, /strict, and /readonly update modes
847 are mutually exclusive. The update mode is no longer included in the
848 database key; it just determines when the database is updated. (This
849 means that when you upgrde Exim will forget old rate measurements.)
851 Exim now checks that the per_* options are used with an update mode that
852 makes sense for the current ACL. For example, when Exim is processing a
853 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
854 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
855 must specify per_mail/readonly. If you omit the update mode it defaults to
856 /leaky where that makes sense (as before) or /readonly where required.
858 The /noupdate option is now undocumented but still supported for
859 backwards compatibility. It is equivalent to /readonly except that in
860 ACLs where /readonly is required you may specify /leaky/noupdate or
861 /strict/noupdate which are treated the same as /readonly.
863 A useful new feature is the /count= option. This is a generalization
864 of the per_byte option, so that you can measure the throughput of other
865 aggregate values. For example, the per_byte option is now equivalent
866 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
868 The per_rcpt option has been generalized using the /count= mechanism
869 (though it's more complicated than the per_byte equivalence). When it is
870 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
871 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
872 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
873 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
874 Note that using per_rcpt with a non-readonly update mode in more than
875 one ACL will cause the recipients to be double-counted. (The per_mail
876 and per_byte options don't have this problem.)
878 The handling of very low rates has changed slightly. If the computed rate
879 is less than the event's count (usually one) then this event is the first
880 after a long gap. In this case the rate is set to the same as this event's
881 count, so that the first message of a spam run is counted properly.
883 The major new feature is a mechanism for counting the rate of unique
884 events. The new per_addr option counts the number of different
885 recipients that someone has sent messages to in the last time period. It
886 behaves like per_rcpt if all the recipient addresses are different, but
887 duplicate recipient addresses do not increase the measured rate. Like
888 the /count= option this is a general mechanism, so the per_addr option
889 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
890 example, measure the rate that a client uses different sender addresses
891 with the options per_mail/unique=$sender_address. There are further
892 details in the main documentation.
894 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
896 TF/06 Removed a few PCRE remnants.
898 TF/07 Automatically extract Exim's version number from tags in the git
899 repository when doing development or release builds.
901 PP/02 Raise smtp_cmd_buffer_size to 16kB.
902 Bugzilla 879. Patch from Paul Fisher.
904 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
905 Heavily based on revision 40f9a89a from Simon Arlott's tree.
908 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
910 PP/05 Variable $av_failed, true if the AV scanner deferred.
911 Bugzilla 1078. Patch from John Horne.
913 PP/06 Stop make process more reliably on build failure.
914 Bugzilla 1087. Patch from Heiko Schlittermann.
916 PP/07 Make maildir_use_size_file an _expandable_ boolean.
917 Bugzilla 1089. Patch from Heiko Schlittermann.
919 PP/08 Handle ${run} returning more data than OS pipe buffer size.
920 Bugzilla 1131. Patch from Holger Weiß.
922 PP/09 Handle IPv6 addresses with SPF.
923 Bugzilla 860. Patch from Wolfgang Breyha.
925 PP/10 GnuTLS: support TLS 1.2 & 1.1.
927 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
930 PP/11 match_* no longer expand right-hand-side by default.
931 New compile-time build option, EXPAND_LISTMATCH_RHS.
932 New expansion conditions, "inlist", "inlisti".
934 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
936 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
938 PP/14 fix log_write() format string regression from TF/03.
939 Bugzilla 1152. Patch from Dmitry Isaikin.
945 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
947 PP/02 Harmonised TLS library version reporting; only show if debugging.
948 Layout now matches that introduced for other libraries in 4.74 PP/03.
950 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
952 PP/04 New "dns_use_edns0" global option.
954 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
957 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
958 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
960 TK/01 Updated PolarSSL code to 0.14.2.
961 Bugzilla 1097. Patch from Andreas Metzler.
963 PP/07 Catch divide-by-zero in ${eval:...}.
966 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
969 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
970 format-string attack -- SECURITY: remote arbitrary code execution.
972 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
973 time unintentionally subject to list matching rules, letting the header
974 cause arbitrary Exim lookups (of items which can occur in lists, *not*
975 arbitrary string expansion). This allowed for information disclosure.
977 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
978 INT_MIN/-1 -- value coerced to INT_MAX.
984 NM/01 Workround for PCRE version dependency in version reporting
987 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
988 This fixes portability to compilers other than gcc, notably
989 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
991 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
992 makefiles for portability to HP-UX and POSIX correctness.
994 PP/01 Permit LOOKUP_foo enabling on the make command-line.
995 Also via indented variable definition in the Makefile.
996 (Debugging by Oliver Heesakkers).
998 PP/02 Restore caching of spamd results with expanded spamd_address.
999 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
1001 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
1002 Improves build reliability. Fix from: Frank Elsner
1004 NM/02 Fix wide character breakage in the rfc2047 coding
1005 Fixes bug 1064. Patch from Andrey N. Oktyabrski
1007 NM/03 Allow underscore in dnslist lookups
1008 Fixes bug 1026. Patch from Graeme Fowler
1010 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
1011 Code patches from Adam Ciarcinski of NetBSD.
1013 NM/04 Fixed exiqgrep to cope with mailq missing size issue
1016 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
1017 is logged, to avoid truncation. Patch from John Horne.
1019 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
1020 Patch from Jakob Hirsch.
1022 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
1023 SQL string expansion failure details.
1024 Patch from Andrey Oktyabrski.
1026 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
1027 Patch from Simon Arlott.
1029 PP/09 New lookups functionality failed to compile on old gcc which rejects
1030 extern declarations in function scope.
1031 Patch from Oliver Fleischmann
1033 PP/10 Use sig_atomic_t for flags set from signal handlers.
1034 Check getgroups() return and improve debugging.
1035 Fixed developed for diagnosis in bug 927 (which turned out to be
1038 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
1039 Patch from Mark Zealey.
1041 PP/12 Bugzilla 1056: Improved spamd server selection.
1042 Patch from Mark Zealey.
1044 PP/13 Bugzilla 1086: Deal with maildir quota file races.
1045 Based on patch from Heiko Schlittermann.
1047 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
1048 Patch from Uwe Doering, sign-off by Michael Haardt.
1050 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
1051 variable declaration deep within a block. Bug and patch from
1054 PP/15 lookups-Makefile IRIX compatibilty coercion.
1056 PP/16 Make DISABLE_DKIM build knob functional.
1058 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
1059 Patch by Simon Arlott
1061 TF/03 Fix valgrind.h portability to C89 compilers that do not support
1062 variable argument macros. Our copy now differs from upstream.
1068 TF/01 Failure to get a lock on a hints database can have serious
1069 consequences so log it to the panic log.
1071 TF/02 Log LMTP confirmation messages in the same way as SMTP,
1072 controlled using the smtp_confirmation log selector.
1074 TF/03 Include the error message when we fail to unlink a spool file.
1076 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
1077 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
1078 for maintaining out-of-tree patches for some time.
1080 PP/01 Bugzilla 139: Documentation and portability issues.
1081 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
1082 Handle per-OS dynamic-module compilation flags.
1084 PP/02 Let /dev/null have normal permissions.
1085 The 4.73 fixes were a little too stringent and complained about the
1086 permissions on /dev/null. Exempt it from some checks.
1087 Reported by Andreas M. Kirchwitz.
1089 PP/03 Report version information for many libraries, including
1090 Exim version information for dynamically loaded libraries. Created
1091 version.h, now support a version extension string for distributors
1092 who patch heavily. Dynamic module ABI change.
1094 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
1095 privilege escalation vulnerability whereby the Exim run-time user
1096 can cause root to append content of the attacker's choosing to
1099 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
1102 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
1103 If dropping privileges for untrusted macros, we disabled normal logging
1104 on the basis that it would fail; for the Exim run-time user, this is not
1105 the case, and it resulted in successful deliveries going unlogged.
1106 Fixed. Reported by Andreas Metzler.
1112 PP/01 Date: & Message-Id: revert to normally being appended to a message,
1113 only prepend for the Resent-* case. Fixes regression introduced in
1114 Exim 4.70 by NM/22 for Bugzilla 607.
1116 PP/02 Include check_rfc2047_length in configure.default because we're seeing
1117 increasing numbers of administrators be bitten by this.
1119 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
1121 PP/03 Bugzilla 994: added openssl_options main configuration option.
1123 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
1125 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
1127 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
1129 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
1130 without a peer certificate, leading to a segfault because of an
1131 assumption that peers always have certificates. Be a little more
1132 paranoid. Problem reported by Martin Tscholak.
1134 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
1135 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
1136 NB: ClamAV planning to remove STREAM in "middle of 2010".
1137 CL also introduces -bmalware, various -d+acl logging additions and
1138 more caution in buffer sizes.
1140 PP/09 Implemented reverse_ip expansion operator.
1142 PP/10 Bugzilla 937: provide a "debug" ACL control.
1144 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
1146 PP/12 Bugzilla 973: Implement --version.
1148 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
1150 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
1152 PP/15 Bugzilla 816: support multiple condition rules on Routers.
1154 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
1155 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
1156 ignore trailing whitespace.
1158 JJ/02 prevent non-panic DKIM error from being sent to paniclog
1160 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
1163 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
1164 Notification from Dr Andrew Aitchison.
1166 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
1167 ExtendedDetectionInfo response format.
1168 Notification from John Horne.
1170 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
1173 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
1174 XSL and documented dependency on system catalogs, with examples of how
1177 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
1180 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
1181 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
1182 configuration file which is writeable by the Exim user or group.
1184 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
1185 of configuration files to cover files specified with the -C option if
1186 they are going to be used with root privileges, not just the default
1189 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
1190 option (effectively making it always true).
1192 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
1193 files to be used while preserving root privileges.
1195 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
1196 that rogue child processes cannot use them.
1198 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
1199 run-time user, instead of root.
1201 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
1202 Exim run-time user without dropping privileges.
1204 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
1205 result string, instead of calling string_vformat() twice with the same
1208 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
1209 for other users. Others should always drop root privileges if they use
1210 -C on the command line, even for a whitelisted configure file.
1212 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
1214 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
1220 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
1221 $data_path, and $header_path variables; fixed documentation bugs and
1224 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
1225 exipick to access non-standard spools, including the "frozen" queue
1228 NM/01 Bugzilla 965: Support mysql stored procedures.
1229 Patch from Alain Williams
1231 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
1233 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
1234 Patch from Andreas Metzler
1236 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
1237 Patch from Kirill Miazine
1239 NM/05 Bugzilla 671: Added umask to procmail example.
1241 JJ/03 installed exipick 20100323.0, fixing doc bug
1243 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
1244 directory. Notification and patch from Dan Rosenberg.
1246 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
1248 TK/02 Improve log output when DKIM signing operation fails.
1250 MH/01 Treat the transport option dkim_domain as a colon separated
1251 list, not as a single string, and sign the message with each element,
1252 omitting multiple occurences of the same signer.
1254 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
1255 Bugzilla 985, 986. Patch by Simon Arlott
1257 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
1258 Patch by Simon Arlott
1260 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
1261 MBX locking. Notification from Dan Rosenberg.
1267 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
1269 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
1271 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
1273 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
1275 NM/04 Bugzilla 915: Flag broken perl installation during build.
1281 TK/01 Added patch by Johannes Berg that expands the main option
1282 "spamd_address" if it starts with a dollar sign.
1284 TK/02 Write list of recipients to X-Envelope-Sender header when building
1285 the mbox-format spool file for content scanning (suggested by Jakob
1288 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
1289 (http://www.dcc-servers.net/) support via dccifd. Activated by
1290 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
1292 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
1293 by Mark Daniel Reidel <mr@df.eu>.
1295 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
1296 When building exim an external PCRE library is now needed -
1297 PCRE is a system library on the majority of modern systems.
1298 See entry on PCRE_LIBS in EDITME file.
1300 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
1301 conversation. Added nologin parameter to request.
1302 Patch contributed by Kirill Miazine.
1304 TF/01 Do not log submission mode rewrites if they do not change the address.
1306 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
1308 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
1309 log files in place. Contributed by Roberto Lima.
1311 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
1313 TF/03 Bugzilla 615: When checking the local_parts router precondition
1314 after a local_part_suffix or local_part_prefix option, Exim now
1315 does not use the address's named list lookup cache, since this
1316 contains cached lookups for the whole local part.
1318 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
1319 Robert Millan. Documentation is in experimental-spec.txt.
1321 TF/04 Bugzilla 668: Fix parallel build (make -j).
1323 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
1325 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
1326 Patch provided by Jan Srzednicki.
1328 TF/05 Leading white space used to be stripped from $spam_report which
1329 wrecked the formatting. Now it is preserved.
1331 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
1332 that they are available at delivery time.
1334 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
1336 TF/08 TLS error reporting now respects the incoming_interface and
1337 incoming_port log selectors.
1339 TF/09 Produce a more useful error message if an SMTP transport's hosts
1340 setting expands to an empty string.
1342 NM/06 Bugzilla 744: EXPN did not work under TLS.
1343 Patch provided by Phil Pennock.
1345 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
1346 Patch provided by Richard Godbee.
1348 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
1349 acl_smtp_notquit, added index entry.
1351 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
1352 Patch provided by Eugene Bujak.
1354 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
1355 accept(). Patch provided by Maxim Dounin.
1357 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
1358 Patch provided by Phil Pennock.
1360 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
1362 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
1363 Patch provided by Brad "anomie" Jorsch.
1365 NM/14 Bugzilla 622: Added timeout setting to transport filter.
1366 Patch provided by Dean Brooks.
1368 TK/05 Add native DKIM support (does not depend on external libraries).
1370 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
1371 Patch provided by Graeme Fowler.
1373 NM/16 Bugzilla 851: Documentation example syntax fix.
1375 NM/17 Changed NOTICE file to remove references to embedded PCRE.
1377 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
1380 NM/19 Bugzilla 745: TLS version reporting.
1381 Patch provided by Phil Pennock.
1383 NM/20 Bugzilla 167: bool: condition support.
1384 Patch provided by Phil Pennock.
1386 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
1387 clients. Patch provided by Phil Pennock.
1389 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
1390 Patch provided by Brad "anomie" Jorsch.
1392 NM/23 Bugzilla 687: Fix misparses in eximstats.
1393 Patch provided by Heiko Schlittermann.
1395 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
1396 Patch provided by Heiko Schlittermann.
1398 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1399 plus update to original patch.
1401 NM/26 Bugzilla 799: Documentation correction for ratelimit.
1403 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
1404 Patch provided by David Brownlee.
1406 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
1408 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
1410 NM/30 Bugzilla 888: TLS documentation bugfixes.
1412 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
1414 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
1415 Unlike the original bugzilla I have changed all shell scripts in src tree.
1417 NM/33 Bugzilla 898: Transport filter timeout fix.
1418 Patch by Todd Rinaldo.
1420 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
1421 Patch by Serge Demonchaux.
1423 NM/35 Bugzilla 39: Base64 decode bug fixes.
1424 Patch by Jakob Hirsch.
1426 NM/36 Bugzilla 909: Correct connect() call in dcc code.
1428 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
1430 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
1432 NM/39 Bugzilla 911: Fixed MakeLinks build script.
1438 TK/01 Add preliminary DKIM support. Currently requires a forked version of
1439 ALT-N's libdkim that I have put here:
1440 http://duncanthrax.net/exim-experimental/
1442 Note to Michael Haardt: I had to rename some vars in sieve.c. They
1443 were called 'true' and it seems that C99 defines that as a reserved
1444 keyword to be used with 'bool' variable types. That means you could
1445 not include C99-style headers which use bools without triggering
1446 build errors in sieve.c.
1448 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
1449 as mailq or other aliases. Changed the --help handling significantly
1450 to do whats expected. exim_usage() emits usage/help information.
1452 SC/01 Added the -bylocaldomain option to eximstats.
1454 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
1456 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
1458 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
1464 PH/01 Another patch from the Sieve maintainer.
1466 PH/02 When an IPv6 address is converted to a string for single-key lookup
1467 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
1468 dots are used instead of colons so that keys in lsearch files need not
1469 contain colons. This was done some time before quoting was made available
1470 in lsearch files. However, iplsearch files do require colons in IPv6 keys
1471 (notated using the quote facility) so as to distinguish them from IPv4
1472 keys. This meant that lookups for IP addresses in host lists did not work
1473 for iplsearch lookups.
1475 This has been fixed by arranging for IPv6 addresses to be expressed with
1476 colons if the lookup type is iplsearch. This is not incompatible, because
1477 previously such lookups could never work.
1479 The situation is now rather anomolous, since one *can* have colons in
1480 ordinary lsearch keys. However, making the change in all cases is
1481 incompatible and would probably break a number of configurations.
1483 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
1486 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
1487 conversion specification without a maximum field width, thereby enabling
1488 a rogue spamd server to cause a buffer overflow. While nobody in their
1489 right mind would setup Exim to query an untrusted spamd server, an
1490 attacker that gains access to a server running spamd could potentially
1491 exploit this vulnerability to run arbitrary code as the Exim user.
1493 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
1494 $primary_hostname instead of what libspf2 thinks the hosts name is.
1496 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
1497 a directory entry by the name of the lookup key. Previously, if a
1498 symlink pointed to a non-existing file or a file in a directory that
1499 Exim lacked permissions to read, a lookup for a key matching that
1500 symlink would fail. Now it is enough that a matching directory entry
1501 exists, symlink or not. (Bugzilla 503.)
1503 PH/03 The body_linecount and body_zerocount variables are now exported in the
1506 PH/04 Added the $dnslist_matched variable.
1508 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
1509 This means they are set thereafter only if the connection becomes
1512 PH/06 Added the client_condition to authenticators so that some can be skipped
1513 by clients under certain conditions.
1515 PH/07 The error message for a badly-placed control=no_multiline_responses left
1516 "_responses" off the end of the name.
1518 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
1520 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
1521 (without spaces) instead of just copying the configuration text.
1523 PH/10 Added the /noupdate option to the ratelimit ACL condition.
1525 PH/11 Added $max_received_linelength.
1527 PH/12 Added +ignore_defer and +include_defer to host lists.
1529 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
1530 way in which PCRE > 7.0 is built.
1532 PH/14 Implemented queue_only_load_latch.
1534 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
1535 MAIL command. The effect was to mangle the value on 64-bit systems.
1537 PH/16 Another patch from the Sieve maintainer.
1539 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
1541 PH/18 If a system quota error occurred while trying to create the file for
1542 a maildir delivery, the message "Mailbox is full" was not appended to the
1543 bounce if the delivery eventually timed out. Change 4.67/27 below applied
1544 only to a quota excession during the actual writing of the file.
1546 PH/19 It seems that peer DN values may contain newlines (and other non-printing
1547 characters?) which causes problems in log lines. The DN values are now
1548 passed through string_printing() before being added to log lines.
1550 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
1551 and InterBase are left for another time.)
1553 PH/21 Added message_body_newlines option.
1555 PH/22 Guard against possible overflow in moan_check_errorcopy().
1557 PH/23 POSIX allows open() to be a macro; guard against that.
1559 PH/24 If the recipient of an error message contained an @ in the local part
1560 (suitably quoted, of course), incorrect values were put in $domain and
1561 $local_part during the evaluation of errors_copy.
1567 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
1568 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
1571 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
1572 issue a MAIL command.
1574 PH/02 In an ACL statement such as
1576 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
1578 if a client was not listed at all, or was listed with a value other than
1579 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
1580 the condition was not true (as it should be), so access was not denied.
1581 The bug was that the ! inversion was incorrectly passed on to the second
1582 item. This has been fixed.
1584 PH/03 Added additional dnslists conditions == and =& which are different from
1585 = and & when the dns lookup returns more than one IP address.
1587 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
1588 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
1590 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
1591 FSYNC, which compiles an option called disable_fsync that allows for
1592 bypassing fsync(). The documentation is heavily laced with warnings.
1594 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
1596 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
1597 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
1598 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
1599 including adding "make clean"; (3) Added -fPIC when compiling the test
1600 dynamically loaded module, to get rid of a warning.
1602 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
1603 message fails, move_frozen_messages = true and ignore_bounce_errors_after
1604 = 0s. The bug is otherwise harmless.
1606 PH/07 There was a bug in the dovecot authenticator such that the value of
1607 $auth1 could be overwritten, and so not correctly preserved, after a
1608 successful authentication. This usually meant that the value preserved by
1609 the server_setid option was incorrect.
1611 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
1613 PH/09 Installed PCRE release 7.0.
1615 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
1616 run for batched SMTP input. It is now run at the start of every message
1617 in the batch. While fixing this I discovered that the process information
1618 (output by running exiwhat) was not always getting set for -bs and -bS
1619 input. This is fixed, and it now also says "batched" for BSMTP.
1621 PH/11 Added control=no_pipelining.
1623 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
1624 patch, slightly modified), and move the expansion of helo_data till after
1625 the connection is made in the smtp transport (so it can use these
1628 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
1630 PH/14 Added log_selector = +pid.
1632 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
1634 PH/16 Add ${if forany and ${if forall.
1636 PH/17 Added dsn_from option to vary the From: line in DSNs.
1638 PH/18 Flush SMTP output before performing a callout, unless control =
1639 no_callout_flush is set.
1641 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
1642 was true (the default) a successful delivery failed to delete the retry
1643 item, thus causing premature timeout of the address. The bug is now
1646 PH/20 Added hosts_avoid_pipelining to the smtp transport.
1648 PH/21 Long custom messages for fakedefer and fakereject are now split up
1649 into multiline reponses in the same way that messages for "deny" and
1650 other ACL rejections are.
1652 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
1653 with slight modification.
1655 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
1656 draft, changing the syntax and factoring some duplicate code".
1658 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
1659 for deliveries of the second and subsequent messages over the same SMTP
1662 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
1663 ${reduce, with only minor "tidies".
1665 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
1667 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
1668 expansion side effects.
1670 PH/27 When a message times out after an over-quota error from an Exim-imposed
1671 quota, the bounce message says "mailbox is full". This message was not
1672 being given when it was a system quota that was exceeded. It now should
1675 MH/03 Made $recipients available in local_scan(). local_scan() already has
1676 better access to the recipient list through recipients_list[], but
1677 $recipients can be useful in postmaster-provided expansion strings.
1679 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
1680 in the case of a MAIL command with additional options following the
1681 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
1682 were accidentally chopped off.
1684 PH/29 SMTP synchronization checks are implemented when a command is read -
1685 there is a check that no more input is waiting when there shouldn't be
1686 any. However, for some commands, a delay in an ACL can mean that it is
1687 some time before the response is written. In this time, more input might
1688 arrive, invalidly. So now there are extra checks after an ACL has run for
1689 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
1690 pipelining has not been advertised.
1692 PH/30 MH's patch to allow iscntrl() characters to be list separators.
1694 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
1695 returned in the SMTP response when smtp_return_error_details was false.
1696 This has been fixed.
1698 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
1699 instead of the C I/O that was originally supplied, because problems were
1700 reported on Solaris.
1702 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
1703 Exim which did not show up earlier: it was assuming that a call to
1704 SSL_CTX_set_info_callback() might give an error value. In fact, there is
1705 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
1706 was a macro that became an assignment, so it seemed to work. This has
1707 changed to a proper function call with a void return, hence the compile
1708 error. Exim's code has been fixed.
1710 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
1713 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
1715 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
1717 PH/37 If a message is not accepted after it has had an id assigned (e.g.
1718 because it turns out to be too big or there is a timeout) there is no
1719 "Completed" line in the log. When some messages of this type were
1720 selected by exigrep, they were listed as "not completed". Others were
1721 picked up by some special patterns. I have improved the selection
1722 criteria to be more general.
1724 PH/38 The host_find_failed option in the manualroute router can now be set
1725 to "ignore", to completely ignore a host whose IP address cannot be
1726 found. If all hosts are ignored, the behaviour is controlled by the new
1727 host_all_ignored option.
1729 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
1730 homing or because of multiple MX records with /mx) generated more than
1731 one IP address, and the following item turned out to be the local host,
1732 all the secondary addresses of the first item were incorrectly removed
1733 from the list, along with the local host and any following hosts (which
1734 is what is supposed to happen).
1736 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
1737 whoever called Exim into the -H file. In the case of the daemon it was
1738 behaving confusingly. When first started, it used values for whoever
1739 started the daemon, but after a SIGHUP it used the Exim user (because it
1740 calls itself on a restart). I have changed the code so that it now always
1743 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
1744 message are rejected with the same error (e.g. no authentication or bad
1745 sender address), and a DATA command is nevertheless sent (as can happen
1746 with PIPELINING or a stupid MUA), the error message that was given to the
1747 RCPT commands is included in the rejection of the DATA command. This is
1748 intended to be helpful for MUAs that show only the final error to their
1751 PH/42 Another patch from the Sieve maintainer.
1753 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
1754 Eximstats - Fixed some broken HTML links and added missing column headers
1756 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
1757 columns for Rejects, Temp Rejects, Ham, and Spam rows.
1759 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
1761 PH/43 Yet another patch from the Sieve maintainer.
1763 PH/44 I found a way to check for a TCP/IP connection going away before sending
1764 the response to the final '.' that terminates a message, but only in the
1765 case where the client has not sent further data following the '.'
1766 (unfortunately, this is allowed). However, in many cases there won't be
1767 any further data because there won't be any more messages to send. A call
1768 to select() can be used: if it shows that the input is "ready", there is
1769 either input waiting, or the socket has been closed. An attempt to read
1770 the next input character can distinguish the two cases. Previously, Exim
1771 would have sent an OK response which the client would never have see.
1772 This could lead to message repetition. This fix should cure that, at
1773 least in a lot of common cases.
1775 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
1776 advertised in response to EHLO.
1782 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
1783 fixed by 4.65/MH/01 (is this a record?) are fixed:
1785 (i) An empty string was always treated as zero by the numeric comparison
1786 operators. This behaviour has been restored.
1788 (ii) It is documented that the numeric comparison operators always treat
1789 their arguments as decimal numbers. This was broken in that numbers
1790 starting with 0 were being interpreted as octal.
1792 While fixing these problems I realized that there was another issue that
1793 hadn't been noticed. Values of message_size_limit (both the global option
1794 and the transport option) were treated as octal if they started with 0.
1795 The documentation was vague. These values are now always treated as
1796 decimal, and I will make that clear in the documentation.
1802 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
1803 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
1806 MH/01 Don't check that the operands of numeric comparison operators are
1807 integers when their expansion is in "skipping" mode (fixes bug
1808 introduced by 4.64-PH/07).
1810 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
1811 child addresses, Exim now panics and dies. Previously, because the count
1812 is held in a short int, deliveries were likely to be lost. As such a
1813 large number of recipients for a single message is ridiculous
1814 (performance will be very, very poor), I have chosen to impose a limit
1815 rather than extend the field.
1821 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
1822 leftover -K file (the existence of which was triggered by #402).
1823 While we were at it, introduced process PID as part of the -K
1824 filename. This should rule out race conditions when creating
1827 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
1828 processing considerably. Previous code took too long for large mails,
1829 triggering a timeout which in turn triggers #401.
1831 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
1832 in the DK code in transports.c. sendfile() is not really portable,
1833 hence the _LINUX specificness.
1835 TF/01 In the add_headers option to the mail command in an Exim filter,
1836 there was a bug that Exim would claim a syntax error in any
1837 header after the first one which had an odd number of characters
1840 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
1841 callout verification, Exim cached a "reject" for the entire domain. This
1842 is correct for most verifications, but it is not correct for a recipient
1843 verification with use_sender or use_postmaster set, because in that case
1844 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
1845 case of MAIL FROM:<> rejection from other early rejections (e.g.
1846 rejection of HELO). When verifying a recipient using a non-null MAIL
1847 address, the cache is ignored if it shows MAIL FROM:<> rejection.
1848 Whatever the result of the callout, the value of the domain cache is
1849 left unchanged (for any other kind of callout, getting as far as trying
1850 RCPT means that the domain itself is ok).
1852 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
1855 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
1856 manifest itself as EPIPE rather than ECONNECT. When tidying away a
1857 session, the daemon ignores ECONNECT errors and logs others; it now
1858 ignores EPIPE as well.
1860 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
1861 (quoted-printable decoding).
1863 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
1864 later the small subsequent patch to fix an introduced bug.
1866 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
1868 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
1870 PH/08 An error is now given if message_size_limit is specified negative.
1872 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
1873 to be given (somewhat) arbitrary names.
1875 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
1878 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
1879 miscellaneous code fixes
1881 PH/10 Added the log_reject_target ACL modifier to specify where to log
1884 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
1885 hostname. This is wrong, because it relates to the incoming message (and
1886 probably the interface on which it is arriving) and not to the outgoing
1887 callout (which could be using a different interface). This has been
1888 changed to use the value of the helo_data option from the smtp transport
1889 instead - this is what is used when a message is actually being sent. If
1890 there is no remote transport (possible with a router that sets up host
1891 addresses), $smtp_active_hostname is used.
1893 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
1894 tweaks were necessary in order to get it to work (see also 21 below):
1895 (a) The code assumed that strncpy() returns a negative number on buffer
1896 overflow, which isn't the case. Replaced with Exim's string_format()
1898 (b) There were several signed/unsigned issues. I just did the minimum
1899 hacking in of casts. There is scope for a larger refactoring.
1900 (c) The code used strcasecmp() which is not a standard C function.
1901 Replaced with Exim's strcmpic() function.
1902 (d) The code set only $1; it now sets $auth1 as well.
1903 (e) A simple test gave the error "authentication client didn't specify
1904 service in request". It would seem that Dovecot has changed its
1905 interface. Fortunately there's a specification; I followed it and
1906 changed what the client sends and it appears to be working now.
1908 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
1911 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
1912 address A is aliased to B and C, where B exists and C does not. Without
1913 -v the output is "A verified" because verification stops after a
1914 successful redirection if more than one address is generated. However,
1915 with -v the child addresses are also verified. Exim was outputting "A
1916 failed to verify" and then showing the successful verification for C,
1917 with its parentage. It now outputs "B failed to verify", showing B's
1918 parentage before showing the successful verification of C.
1920 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
1921 look up a TXT record in a specific list after matching in a combined
1924 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
1925 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
1926 they consult the DNS. I had assumed they would set it the way they
1927 wanted; and indeed my experiments on Linux seem to show that in some
1928 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
1929 To be on the safe side, however, I have now made the interface to
1930 host_find_byname() similar to host_find_bydns(), with an argument
1931 containing the DNS resolver options. The host_find_byname() function now
1932 sets these options at its start, just as host_find_bydns() does. The smtp
1933 transport options dns_qualify_single and dns_search_parents are passed to
1934 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
1935 of host_find_byname() use the default settings of RES_DEFNAMES
1936 (qualify_single) but not RES_DNSRCH (search_parents).
1938 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
1939 spool_read_header() do less string testing, by means of a preliminary
1940 switch on the second character of optional "-foo" lines. (This is
1941 overdue, caused by the large number of possibilities that now exist.
1942 Originally there were few.) While I was there, I also converted the
1943 str(n)cmp tests so they don't re-test the leading "-" and the first
1944 character, in the hope this might squeeze out yet more improvement.
1946 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
1947 flag allowing group syntax was set by the header_syntax check but not
1948 turned off, possible causing trouble later; (2) The flag was not being
1949 set at all for the header_verify test, causing "group"-style headers to
1950 be rejected. I have now set it in this case, and also caused header_
1951 verify to ignore an empty address taken from a group. While doing this, I
1952 came across some other cases where the code for allowing group syntax
1953 while scanning a header line wasn't quite right (mostly, not resetting
1954 the flag correctly in the right place). These bugs could have caused
1955 trouble for malformed header lines. I hope it is now all correct.
1957 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
1958 with the "reply" argument non-NULL. The code, however (which originally
1959 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
1960 but it didn't always do it. This confused somebody who was copying the
1961 code for some other use. I have removed all the tests.
1963 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
1964 feature that was used to support insecure browsers during the U.S. crypto
1965 embargo. It requires special client support, and Exim is probably the
1966 only MTA that supported it -- and would never use it because real RSA is
1967 always available. This code has been removed, because it had the bad
1968 effect of slowing Exim down by computing (never used) parameters for the
1969 RSA_EXPORT functionality.
1971 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
1972 authenticator to fail if there's a tab character in the incoming data
1973 (there should never be unless someone is messing about, as it's supposed
1974 to be base64-encoded). Also added, on Timo's advice, the "secured" option
1975 if the connection is using TLS or if the remote IP is the same as the
1976 local IP, and the "valid-client-cert option" if a client certificate has
1979 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
1980 authenticators. This can be used for authorization after authentication
1981 succeeds. (In the case of plaintext, it servers for both authentication
1984 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
1985 if any retry times were supplied.
1987 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
1988 connection, where there is no client IP address to check. In this
1989 situation, the verify now always succeeds.
1991 PH/25 Applied John Jetmore's -Mset patch.
1993 PH/26 Added -bem to be like -Mset, but loading a message from a file.
1995 PH/27 In a string expansion for a processed (not raw) header when multiple
1996 headers of the same name were present, leading whitespace was being
1997 removed from all of them, but trailing whitespace was being removed only
1998 from the last one. Now trailing whitespace is removed from each header
1999 before concatenation. Completely empty headers in a concatenation (as
2000 before) are ignored.
2002 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
2003 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
2005 PH/29 [Removed. This was a change that I later backed out, and forgot to
2006 correct the ChangeLog entry (that I had efficiently created) before
2007 committing the later change.]
2009 PH/30 Exim was sometimes attempting to deliver messages that had suffered
2010 address errors (4xx response to RCPT) over the same connection as other
2011 messages routed to the same hosts. Such deliveries are always "forced",
2012 so retry times are not inspected. This resulted in far too many retries
2013 for the affected addresses. The effect occurred only when there were more
2014 hosts than the hosts_max_try setting in the smtp transport when it had
2015 the 4xx errors. Those hosts that it had tried were not added to the list
2016 of hosts for which the message was waiting, so if all were tried, there
2017 was no problem. Two fixes have been applied:
2019 (i) If there are any address or message errors in an SMTP delivery, none
2020 of the hosts (tried or untried) are now added to the list of hosts
2021 for which the message is waiting, so the message should not be a
2022 candidate for sending over the same connection that was used for a
2023 successful delivery of some other message. This seems entirely
2024 reasonable: after all the message is NOT "waiting for some host".
2025 This is so "obvious" that I'm not sure why it wasn't done
2026 previously. Hope I haven't missed anything, but it can't do any
2027 harm, as the worst effect is to miss an optimization.
2029 (ii) If, despite (i), such a delivery is accidentally attempted, the
2030 routing retry time is respected, so at least it doesn't keep
2031 hammering the server.
2033 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
2034 in ${readsocket because some servers need this prod.
2036 PH/32 Added some extra debug output when updating a wait-xxx database.
2038 PH/33 The hint "could be header name not terminated by colon", which has been
2039 given for certain expansion errors for a long time, was not being given
2040 for the ${if def:h_colon_omitted{... case.
2042 PH/34 The spec says: "With one important exception, whenever a domain list is
2043 being scanned, $domain contains the subject domain." There was at least
2044 one case where this was not true.
2046 PH/35 The error "getsockname() failed: connection reset by peer" was being
2047 written to the panic log as well as the main log, but it isn't really
2048 panic-worthy as it just means the connection died rather early on. I have
2049 removed the panic log writing for the ECONNRESET error when getsockname()
2052 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
2053 runs only) independently of the message's sender address. This meant
2054 that, if the 4xx error was in fact related to the sender, a different
2055 message to the same recipient with a different sender could confuse
2056 things. In particualar, this can happen when sending to a greylisting
2057 server, but other circumstances could also provoke similar problems.
2058 I have changed the default so that the retry time for these errors is now
2059 based a combination of the sender and recipient addresses. This change
2060 can be overridden by setting address_retry_include_sender=false in the
2063 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
2064 remote server are returned as part of bounce messages. This was not
2065 happening for LMTP over a pipe (the lmtp transport), but now it is the
2066 same for both kinds of LMTP.
2068 PH/38 Despite being documented as not happening, Exim was rewriting addresses
2069 in header lines that were in fact CNAMEs. This is no longer the case.
2071 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
2072 and queue runs started by the daemon processed all messages. This has
2073 been fixed so that -R and -S can now usefully be given with -q<time>.
2075 PH/40 Import PCRE release 6.7 (fixes some bugs).
2077 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
2079 PH/42 Give an error if -q is specified more than once.
2081 PH/43 Renamed the variables $interface_address and $interface_port as
2082 $received_ip_address and $received_port, to make it clear that these
2083 values apply to message reception, and not to the outgoing interface when
2084 a message is delivered. (The old names remain recognized, of course.)
2086 PH/44 There was no timeout on the connect() call when using a Unix domain
2087 socket in the ${readsocket expansion. There now is.
2089 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
2090 be meaningful with "accept".
2092 SC/01 Eximstats V1.43
2093 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
2095 SC/02 Eximstats V1.44
2096 Use a glob alias rather than an array ref in the generated
2097 parser. This improves both readability and performance.
2099 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
2100 Collect SpamAssassin and rejection statistics.
2101 Don't display local sender or destination tables unless
2102 there is data to show.
2103 Added average volumes into the top table text output.
2105 SC/04 Eximstats V1.46
2106 Collect data on the number of addresses (recipients)
2107 as well as the number of messages.
2109 SC/05 Eximstats V1.47
2110 Added 'Message too big' to the list of mail rejection
2111 reasons (thanks to Marco Gaiarin).
2113 SC/06 Eximstats V1.48
2114 Mainlog lines which have GMT offsets and are too short to
2115 have a flag are now skipped.
2117 SC/07 Eximstats V1.49 (Alain Williams)
2118 Added the -emptyok flag.
2120 SC/08 Eximstats V1.50
2121 Fixes for obtaining the IP address from reject messages.
2123 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
2124 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
2125 whitesspace changes from 4.64-PH/27
2127 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
2130 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
2131 are found, allow negative numbers in numeric criteria)
2133 JJ/06 exipick.20061117.2, added new $message_body_missing variable
2135 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
2136 to match changes made in 4.64-PH/43
2138 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
2140 PH/47 Put in an explicit test for a DNS lookup of an address record where the
2141 "domain" is actually an IP address, and force a failure. This locks out
2142 those revolvers/nameservers that support "A-for-A" lookups, in
2143 contravention of the specifications.
2145 PH/48 When a host name was looked up from an IP address, and the subsequent
2146 forward lookup of the name timed out, the host name was left in
2147 $sender_host_name, contrary to the specification.
2149 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
2150 restricted to single-key lookups, Exim was not diagnosing an error if
2151 * or *@ was used with a query-style lookup.
2153 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
2155 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
2156 long ago, but noone interested enough thought of it. Let's just say that
2157 the "1.1" means that there are some new functions that weren't there at
2158 some point in the past.
2160 PH/51 Error processing for expansion failure of helo_data from an smtp
2161 transport during callout processing was broken.
2163 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
2164 tested/used via the -bh/-bhc/-bs options.
2166 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
2167 bug, fixed in subsequent PCRE releases).
2169 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
2170 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
2172 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
2178 SC/01 Use a glob alias rather than an array ref in eximstats generated
2179 parser. This improves both readability and performance.
2181 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
2182 Don't display local sender or destination tables in eximstats unless
2183 there is data to show.
2184 Added average volumes into the eximstats top table text output.
2186 SC/03 Collect data on the number of addresses (recipients) as well
2187 as the number of messages in eximstats.
2189 TF/01 Correct an error in the documentation for the redirect router. Exim
2190 does (usually) call initgroups() when daemonizing.
2192 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
2193 with consistent privilege compared to when running as a daemon.
2195 TF/03 Note in the spec that $authenticated_id is not set for local
2196 submissions from trusted users.
2198 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
2199 Thanks to Dean Brooks <dean@iglou.com> for the patch.
2201 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
2202 by adding some example configuration directives to the default
2203 configuration file. A little bit of work is required to uncomment the
2204 directives and define how usernames and passwords are checked, but
2205 there is now a framework to start from.
2207 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
2208 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
2209 without this. I don't know how relevant this is to other LDAP libraries.
2211 PH/02 Add the verb name to the "unknown ACL verb" error.
2213 PH/03 Magnus Holmgren's patch for filter_prepend_home.
2215 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
2217 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
2218 directory not expanded when it should be if an expanded home directory
2219 was set for the address (which is overridden by the transport).
2221 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
2224 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
2225 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
2226 because it is too late at that time, and has no effect.
2228 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
2229 security issue with \' (bugzilla #107). I could not use the
2230 PQescapeStringConn() function, because it needs a PGconn value as one of
2233 PH/08 When testing addresses using -bt, indicate those final addresses that
2234 are duplicates that would not cause an additional delivery. At least one
2235 person was confused, thinking that -bt output corresponded to deliveries.
2236 (Suppressing duplicates isn't a good idea as you lose the information
2237 about possibly different redirections that led to the duplicates.)
2239 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
2240 systems where poll() doesn't work, in particular OS X.
2242 PH/10 Added more information to debugging output for retry time not reached.
2244 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
2245 operations in malware.c.
2247 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
2250 PH/13 If write_rejectlog was set false when logging was sent to syslog with
2251 syslog_duplication set false, log lines that would normally be written
2252 both the the main log and to the reject log were not written to syslog at
2255 PH/14 In the default configuration, change the use of "message" in ACL warn
2256 statements to "add_header".
2258 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
2259 not followed by a command (e.g. "seen endif").
2261 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
2262 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
2265 PH/17 Added extra conditions to the default value of delay_warning_condition
2269 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
2270 { match{$h_precedence:}{(?i)bulk|list|junk} } \
2271 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
2274 The Auto-Submitted: and various List- headers are standardised, whereas I
2275 don't think Precedence: ever was.
2277 PH/18 Refactored debugging code in route_finduser() to show more information,
2278 in particular, the error code if getpwnam() issues one.
2280 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
2281 This is apparently needed in addition to the PH/07 change above to avoid
2282 any possible encoding problems.
2284 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
2285 but not after initializing Perl.
2287 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
2288 output them only if debugging. By default they are written stderr,
2289 apparently, which is not desirable.
2291 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
2294 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
2297 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
2299 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
2300 authenticated or an ident call has been made. Suppress the default
2301 values for $authenticated_id and $authenticated_sender (but permit -oMai
2302 and -oMas) when testing with -bh.
2304 PH/24 Re-jigged the order of the tests in the default configuration so that the
2305 tests for valid domains and recipients precede the DNS black list and CSA
2306 tests, on the grounds that those ones are more expensive.
2308 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
2309 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
2310 This bug exists in every version of Exim that I still have, right back to
2313 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
2314 However, an attempt to turn on case-sensitivity in a regex key by
2315 including (?-i) didn't work because the subject string was already
2316 lowercased, and the effects were non-intuitive. It turns out that a
2317 one-line patch can be used to allow (?-i) to work as expected.
2323 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
2324 other effects) broke the use of negated acl sub-conditions.
2326 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
2329 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
2330 "Deny" causes Exim to reject the incoming connection with a 554 error.
2331 Unfortunately, if there is a major crisis, such as a disk failure,
2332 tcp-wrappers gives "deny", whereas what one would like would be some
2333 kind of temporary error. A kludge has been added to help with this.
2334 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
2335 554 error is used if errno is still zero or contains ENOENT (which occurs
2336 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
2339 PH/03 Add -lutil to the default FreeBSD LIBS setting.
2341 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
2342 errors. Otherwise a message that provokes a temporary error (when other
2343 messages do not) can cause a whole host to time out.
2345 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
2346 addresses were routed directly to files or pipes from a redirect router.
2347 File deliveries just didn't batch; pipe deliveries might have suffered
2350 PH/06 A failure to get a lock for a hints database would erroneously always say
2351 "Failed to get write lock", even when it was really a read lock.
2353 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
2354 of 0600. This has been changed to use the value of the lockfile_mode
2355 option (which defaults to 0600).
2357 PH/08 Applied small patch from the Sieve maintainer.
2359 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
2360 folder from quota calculations, a direct delivery into this folder messed
2361 up the contents of the maildirsize file. This was because the regex was
2362 used only to exclude .Trash (or whatever) when the size of the mailbox
2363 was calculated. There was no check that a delivery was happening into an
2364 excluded directory. This bug has been fixed by ignoring all quota
2365 processing for deliveries into excluded directories.
2367 PH/10 Added the maildirfolder_create_regex option to appendfile.
2373 PH/01 The code for finding all the local interface addresses on a FreeBSD
2374 system running IPv6 was broken. This may well have applied to all BSD
2375 systems, as well as to others that have similar system calls. The broken
2376 code found IPv4 interfaces correctly, but gave incorrect values for the
2377 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
2378 that it would not match correctly against @[] and not recognize the IPv6
2381 PH/02 The ipliteral router was not recognizing addresses of the form user@
2382 [ipv6:....] because it didn't know about the "ipv6:" prefix.
2384 PH/03 Added disable_ipv6.
2386 PH/04 Changed $reply_address to use the raw form of the headers instead of the
2387 decoded form, because it is most often used to construct To: headers
2388 lines in autoreplies, and the decoded form may well be syntactically
2389 invalid. However, $reply_address has leading white space removed, and all
2390 newlines turned into spaces so that the autoreply transport does not
2393 PH/05 If group was specified without a user on a router, and no group or user
2394 was specified on a transport, the group from the router was ignored.
2396 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
2397 for visible compile-time settings that can be used to change these
2398 numbers, for those that want even more. Backwards compatibility with old
2399 spool files has been maintained. However, going back to a previous Exim
2400 release will lost any variables that are in spool files.
2402 PH/07 Two small changes when running in the test harness: increase delay when
2403 passing a TCP/IP connection to a new process, in case the original
2404 process has to generate a bounce, and remove special handling of
2405 127.0.0.2 (sic), which is no longer necessary.
2407 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
2408 be the same on different OS.
2410 PH/09 Moved a debug statement in filter processing to avoid a race problem when
2413 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
2414 whether --show-vars was specified or not
2416 JJ/02 exipick: Added support for new ACL variable spool format introduced
2419 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
2420 syntactically invalid From: or Reply-to: line, and a filter used this to
2421 generate an autoreply, and therefore failed to obtain an address for the
2422 autoreply, Exim could try to deliver to a non-existent relative file
2423 name, causing unrelated and misleading errors. What now happens is that
2424 it logs this as a hard delivery error, but does not attempt to create a
2427 PH/11 The exinext utility has a -C option for testing purposes, but although
2428 the given file was scanned by exinext itself; it wasn't being passed on
2429 when Exim was called.
2431 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
2432 an end-of-file indication when reading a command response.
2434 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
2435 compiled. In many other places in Exim, IPv6 addresses are always
2436 recognized, so I have changed this. It also means that IPv4 domain
2437 literals of the form [IPV4:n.n.n.n] are now always recognized.
2439 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
2440 used if the router is not running as root, for example, when verifying at
2441 ACL time, or when using -bh. The debugging output from this situation was
2442 non-existent - all you got was a failure to exec. I have made two
2445 (a) Failures to set uid/gid, the current directory, or a process leader
2446 in a subprocess such as that created by queryprogram now generate
2447 suitable debugging ouput when -d is set.
2449 (b) The queryprogram router detects when it is not running as root,
2450 outputs suitable debugging information if -d is set, and then runs
2451 the subprocess without attempting to change uid/gid.
2453 PH/15 Minor change to Makefile for building test_host (undocumented testing
2456 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
2457 additional section of a DNS packet that returns MX or SRV records.
2458 Instead, it always explicitly searches for A/AAAA records. This avoids
2459 major problems that occur when a DNS server includes only records of one
2460 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
2461 fixed another bug: if SRV records were looked up and the corresponding
2462 address records were *not* found in the additional section, the port
2463 values from the SRV records were lost.
2465 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
2466 using the correct key (the original address) when searching the retry
2467 rules in order to find which one to use for generating the retry hint.
2469 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
2470 adding the default one. Similarly, if it contains a Reply-To: header, the
2471 errors_reply_to option, if set, is not used.
2473 PH/19 When calculating a retry time, Exim used to measure the "time since
2474 failure" by looking at the "first failed" field in the retry record. Now
2475 it does not use this if it is later than than the arrival time of the
2476 message. Instead it uses the arrival time. This makes for better
2477 behaviour in cases where some deliveries succeed, thus re-setting the
2478 "first failed" field. An example is a quota failure for a huge message
2479 when small messages continue to be delivered. Without this change, the
2480 "time since failure" will always be short, possible causing more frequent
2481 delivery attempts for the huge message than are intended.
2482 [Note: This change was subsequently modified - see PH/04 for 4.62.]
2484 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
2485 $1, $2, $3) because the numerical variables can be reset during some
2486 expansion items (e.g. "match"), thereby losing the authentication data.
2488 PH/21 Make -bV show the size of off_t variables so that the test suite can
2489 decide whether to run tests for quotas > 2G.
2491 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
2492 mailbox_size, and mailbox_filecount in the appendfile transport. If a
2493 filecount value is greater than 2G or if a quota value is greater than 2G
2494 on a system where the size of off_t is not greater than 4, a panic error
2497 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
2498 never match. The debug and -bh output now contains an explicit error
2499 message indicating a malformed IPv4 address or mask.
2501 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
2502 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
2503 PH/23 above applies.
2505 PH/25 Do not write to syslog when running in the test harness. The only
2506 occasion when this arises is a failure to open the main or panic logs
2507 (for which there is an explicit test).
2509 PH/26 Added the /no_tell option to "control=freeze".
2511 PH/27 If a host name lookup failed very early in a connection, for example, if
2512 the IP address matched host_lookup and the reverse lookup yielded a name
2513 that did not have a forward lookup, an error message of the form "no IP
2514 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
2515 could be logged. Now it outputs the IP address instead of "NULL".
2517 PH/28 An enabling patch from MH: add new function child_open_exim2() which
2518 allows the sender and the authenticated sender to be set when
2519 submitting a message from within Exim. Since child_open_exim() is
2520 documented for local_scan(), the new function should be too.
2522 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
2523 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
2524 results in an empty string is now treated as unset.
2526 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
2528 PH/31 Added sender_verify_fail logging option.
2530 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
2531 needed by RFC 822 but not by RFC 2822 was commented out. I have now
2532 tidied the source and removed it altogether.
2534 PH/33 When a queue run was abandoned because the load average was too high, a
2535 log line was always written; now it is written only if the queue_run log
2536 selector is set. In addition, the log line for abandonment now contains
2537 information about the queue run such as the pid. This is always present
2538 in "start" and "stop" lines but was omitted from the "abandon" line.
2540 PH/34 Omit spaces between a header name and the colon in the error message that
2541 is given when verify = headers_syntax fails (if there are lots of them,
2542 the message gets confusing).
2544 PH/35 Change the default for dns_check_names_pattern to allow slashes within
2545 names, as there are now some PTR records that contain slashes. This check
2546 is only to protect against broken name servers that fall over on strange
2547 characters, so the fact that it applies to all lookups doesn't matter.
2549 PH/36 Now that the new test suite is complete, we can remove some of the
2550 special code in Exim that was needed for the old test suite. For example,
2551 sorting DNS records because real resolvers return them in an arbitrary
2552 order. The new test suite's fake resolver always returns records in the
2555 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
2556 bounces) except when queue_only is set, to avoid logging races between
2557 the different processes.
2559 PH/38 Panic-die if .include specifies a non-absolute path.
2561 PH/39 A tweak to the "H" retry rule from its user.
2563 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
2564 a label. They prevented compilation on older perls.
2566 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
2567 a warning to be raised on newish perls.
2569 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
2570 on queue. Changes to match documented behaviour of showing count of
2571 messages matching specified criteria.
2573 PH/40 Changed the default ident timeout from 30s to 5s.
2575 PH/41 Added support for the use of login_cap features, on those BSD systems
2576 that have them, for controlling the resources used by pipe deliveries.
2578 PH/42 The content-scanning code uses fopen() to create files in which to put
2579 message data. Previously it was not paying any attention to the mode of
2580 the files. Exim runs with umask(0) because the rest of the code creates
2581 files with open(), and sets the required mode explicitly. Thus, these
2582 files were ending up world-writeable. This was not a big issue, because,
2583 being within the spool directory, they were not world-accessible. I have
2584 created a function called modefopen, which takes an additional mode
2585 argument. It sets umask(777), creates the file, chmods it to the required
2586 mode, then resets the umask. All the relevant calls to fopen() in the
2587 content scanning code have been changed to use this function.
2589 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
2590 to 24 hours. This avoids potential overflow problems when processing G
2591 and H retry rules. I suspect nobody ever tinkers with this value.
2593 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
2595 PH/45 When the plaintext authenticator is running as a client, the server's
2596 challenges are checked to ensure they are valid base64 strings. By
2597 default, the authentication attempt is cancelled if an invalid string is
2598 received. Setting client_ignore_invalid_base64 true ignores these errors.
2599 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
2600 they are received. Thus, the responses can be made to depend on the
2601 challenges. If an invalid string is ignored, an empty string is placed in
2604 PH/46 Messages that are created by the autoreply transport now contains a
2605 References: header, in accordance with RFCs 2822 and 3834.
2607 PH/47 Added authenticated_sender_force to the smtp transport.
2609 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
2611 PH/49 Installed latest patch from the Sieve maintainer.
2613 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
2614 was also set, the appendfile transport was unnecessarily scanning a
2615 directory of message files (e.g. for maildir delivery) to find the count
2616 of files (along with the size), even though it did not need this
2617 information. It now does the scan only if it needs to find either the
2618 size of the count of files.
2620 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
2622 PH/52 Two bugs concerned with error handling when the smtp transport is
2625 (i) Exim was not creating retry information for temporary errors given
2626 for individual recipients after the DATA command when the smtp transport
2627 was used in LMTP mode. This meant that they could be retried too
2628 frequently, and not timed out correctly.
2630 (ii) Exim was setting the flag that allows error details to be returned
2631 for LMTP errors on RCPT commands, but not for LMTP errors for individual
2632 recipients that were returned after the DATA command.
2634 PH/53 This is related to PH/52, but is more general: for any failing address,
2635 when detailed error information was permitted to be returned to the
2636 sender, but the error was temporary, then after the final timeout, only
2637 "retry timeout exceeded" was returned. Now it returns the full error as
2638 well as "retry timeout exceeded".
2640 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
2641 do this, and (what is worse) MTAs that accept it.
2643 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
2644 will now be deprecated.
2646 PH/56 New os.c-cygwin from the Cygwin maintainer.
2648 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
2649 formats (previously only available in exim formats via -bpr, -bpru,
2650 and -bpra. Now also available in native and exiqgrep formats)
2652 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
2653 with very large, slow to parse queues
2655 JJ/08 exipick: added ! as generic prefix to negate any criteria format
2657 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
2659 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
2660 responses to authentication challenges, though it was showing the
2661 challenges; (ii) I've removed the CR characters from the debug output for
2664 PH/58 Allow for the insertion of a newline as well as a space when a string
2665 is turned into more than one encoded-word during RFC 2047 encoding. The
2666 Sieve code now uses this.
2668 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
2669 data_4xx, lost_connection, tls_required.
2671 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
2672 message was being sent as an SMTP response.
2674 PH/61 Add -l and -k options to exicyclog.
2676 PH/62 When verifying, if an address was redirected to one new address, so that
2677 verification continued, and the new address failed or deferred after
2678 having set something in $address_data, the value of $address_data was not
2679 passed back to the ACL. This was different to the case when no
2680 redirection occurred. The value is now passed back in both cases.
2682 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
2683 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
2684 use login_cap.h, so on its own it isn't the distinguishing feature. The
2685 new name refers directly to the setclassresources() function.
2687 PH/65 Added configuration files for NetBSD3.
2689 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
2691 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
2692 is preferred over IPv4.
2694 PH/68 The bounce_return_message and bounce_return_body options were not being
2695 honoured for bounces generated during the reception of non-SMTP messages.
2696 In particular, this applied to messages rejected by the ACL. This bug has
2697 been fixed. However, if bounce_return_message is true and bounce_return_
2698 body is false, the headers that are returned for a non-SMTP message
2699 include only those that have been read before the error was detected.
2700 (In the case of an ACL rejection, they have all been read.)
2702 PH/69 The HTML version of the specification is now built in a directory called
2703 spec_html instead of spec.html, because the latter looks like a path with
2704 a MIME-type, and this confuses some software.
2706 PH/70 Catch two compiler warnings in sieve.c.
2708 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
2709 function verify_get_ident() calls ip_connect() to connect a socket, but
2710 if the "connect()" function timed out, ip_connect() used to close the
2711 socket. However, verify_get_ident() also closes the socket later, and in
2712 between Exim writes to the log, which may get opened at this point. When
2713 the socket was closed in ip_connect(), the log could get the same file
2714 descriptor number as the socket. This naturally causes chaos. The fix is
2715 not to close the socket in ip_connect(); the socket should be closed by
2716 the function that creates it. There was only one place in the code where
2717 this was missing, in the iplookup router, which I don't think anybody now
2718 uses, but I've fixed it anyway.
2720 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
2721 well as to direct DNS lookups. Otherwise the handling of names in host
2722 lists is inconsistent and therefore confusing.
2728 PH/01 Two changes to the default runtime configuration:
2730 (1) Move the checks for relay_from_hosts and authenticated clients from
2731 after to before the (commented out) DNS black list checks.
2733 (2) Add control=submission to the relay_from_hosts and authenticated
2734 clients checks, on the grounds that messages accepted by these
2735 statements are most likely to be submissions.
2737 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
2739 (1) Generate an error if the third argument for the ${prvs expansion is
2742 (2) Treat a missing third argument of ${prvscheck as if it were an empty
2745 (3) Reset the variables that are obtained from the first argument of
2746 ${prvscheck and used in the second argument before leaving the code,
2747 because their memory is reclaimed, so using them afterwards may do
2750 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
2751 one (it's much easier than Tom thought :-).
2753 (5) Because of (4), we can now allow for the use of $prvscheck_result
2754 inside the third argument.
2756 PH/03 For some reason, the default setting of PATH when running a command from
2757 a pipe transport was just "/usr/bin". I have changed it to
2760 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
2761 anything to be listed in the output from -bV.
2763 PH/05 When a filter generated an autoreply, the entire To: header line was
2764 quoted in the delivery log line, like this:
2766 => >A.N.Other <ano@some.domain> <original@ddress> ...
2768 This has been changed so that it extracts the operative address. There
2769 may be more than one such address. If so, they are comma-separated, like
2772 => >ano@some.domain,ona@other.domain <original@ddress> ...
2774 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
2775 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
2776 not being looked up in the rDNS to get a host name, Exim was showing the
2777 IP address twice in Received: lines, even though the IP addresses were
2778 identical. For example:
2780 Received: from [1.2.3.4] (helo=[1.2.3.4])
2782 However, if the real host name was known, it was omitting the HELO data
2783 if it matched the actual IP address. This has been tidied up so that it
2784 doesn't show the same IP address twice.
2786 PH/07 When both +timestamp and +memory debugging was on, the value given by
2787 $tod_xxx expansions could be wrong, because the tod_stamp() function was
2788 called by the debug printing, thereby overwriting the timestamp buffer.
2789 Debugging no longer uses the tod_stamp() function when +timestamp is set.
2791 PH/08 When the original message was included in an autoreply transport, it
2792 always said "this is a copy of the message, including all the headers",
2793 even if body_only or headers_only was set. It now gives an appropriate
2796 PH/09 Applied a patch from the Sieve maintainer which:
2798 o fixes some comments
2799 o adds the (disabled) notify extension core
2800 o adds some debug output for the result of if/elsif tests
2801 o points to the current vacation draft in the documentation
2802 and documents the missing references header update
2806 o fixes a bug in processing the envelope test (when testing
2807 multiple envelope elements, the last element determinted the
2810 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
2811 Electronic Mail") by including:
2813 Auto-submitted: auto-generated
2815 in the messages that it generates (bounce messages and others, such as
2816 warnings). In the case of bounce messages for non-SMTP mesages, there was
2817 also a typo: it was using "Auto_submitted" (underscore instead of
2818 hyphen). Since every message generated by Exim is necessarily in response
2819 to another message, thes have all been changed to:
2821 Auto-Submitted: auto-replied
2823 in accordance with these statements in the RFC:
2825 The auto-replied keyword:
2827 - SHOULD be used on messages sent in direct response to another
2828 message by an automatic process,
2830 - MUST NOT be used on manually-generated messages,
2832 - MAY be used on Delivery Status Notifications (DSNs) and Message
2833 Disposition Notifications (MDNs),
2835 - MUST NOT be used on messages generated by automatic or periodic
2836 processes, except for messages which are automatic responses to
2839 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
2840 to the default Received: header definition.
2842 PH/12 Added log selector acl_warn_skipped (default on).
2844 PH/13 After a successful wildlsearch lookup, discard the values of numeric
2845 variables because (a) they are in the wrong storage pool and (b) even if
2846 they were copied, it wouldn't work properly because of the caching.
2848 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
2849 checking when decoding. Apparently there are clients that generate
2850 overlong encoded strings. Why am I not surprised?
2852 PH/15 If the first argument of "${if match_address" was not empty, but did not
2853 contain an "@" character, Exim crashed. Now it writes a panic log message
2854 and treats the condition as false.
2856 PH/16 In autoreply, treat an empty string for "once" the same as unset.
2858 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
2859 extension "envelope-auth". The code is finished and in agreement with
2860 other implementations, but there is no documentation so far and in fact,
2861 nobody wrote the draft yet. This extension is currently #undef'ed, thus
2862 not changing the active code.
2864 Print executed "if" and "elsif" statements when debugging is used. This
2865 helps a great deal to understand what a filter does.
2867 Document more things not specified clearly in RFC3028. I had all this
2868 sorted out, when out of a sudden new issues came to my mind. Oops."
2870 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
2873 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
2874 canonical form (as documented). However, after a host name lookup from
2875 the IP address, check_host() was doing a simple string comparison with
2876 addresses acquired from the DNS when checking that the found name did
2877 have the original IP as one of its addresses. Since any found IPv6
2878 addresses are likely to be in abbreviated form, the comparison could
2879 fail. Luckily, there already exists a function for doing the comparison
2880 by converting both addresses to binary, so now that is used instead of
2881 the text comparison.
2883 PH/20 There was another similar case to PH/19, when a complete host name was
2884 given in a host list; looking up its IP address could give an abbreviated
2885 form, whereas the current host's name might or might not be abbreviated.
2886 The same fix has been applied.
2892 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
2893 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
2896 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
2897 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
2899 PH/03 Typo: missing ".o" in src/pcre/Makefile.
2901 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
2902 header line, restrict the check to what is listed in RFCs 2369 and 2929.
2903 Also, for "Auto-Submitted", treat anything other than "no" as
2904 non-personal, in accordance with RFC 3834. (Previously it treated
2905 anything starting "auto-" as non-personal.)
2907 TF/01 The control=submission/name=... option had a problem with syntax
2908 errors if the name included a slash character. The /name= option
2909 now slurps the rest of the string, so it can include any characters
2910 but it must come last in the list of options (after /sender_retain
2913 PH/05 Some modifications to the interface to the fake nameserver for the new
2921 TK/01 Added the "success_on_redirect" address verification option. See
2922 NewStuff for rationale and an example.
2924 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
2926 PH/02 Patch to exigrep to allow it to work on syslog lines.
2928 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
2929 fread() to skip over the body file's header line, because in Cygwin the
2930 header line is locked and is inaccessible.
2932 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
2933 co-exist for some time) to make it clear that it is the Exim ID that is
2934 referenced, not the Message-ID: header line.
2936 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
2937 string_format() function, because snprintf() does not exist on all
2940 PH/06 The use of forbid_filter_existstest now also locks out the use of the
2941 ${stat: expansion item.
2943 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
2944 protocol synchronization error", to keep the pedants happy.
2946 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
2947 well as for IRIX systems, when gcc is being used. See the host.c source
2950 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
2952 PH/10 Named domain lists were not working if used in a queue_smtp_domains
2955 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
2956 transport and to the smtp transport in LMTP mode.
2958 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
2960 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
2961 run a filter in a subprocess. This could lead to confusion in subsequent
2962 lookups in the parent process. There should also be a search_tidyup() at
2963 the end of the subprocess.
2965 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
2966 only if the host matched helo_try_verify_hosts, which caused the
2967 verification to occur when the EHLO/HELO command was issued. The ACL just
2968 tested the remembered result. Now, if a previous verification attempt has
2969 not happened, "verify = helo" does it there and then.
2971 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
2973 TK/03 Fix log output including CR from clamd.
2975 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
2976 exist provoked a memory error which could cause a segfault.
2978 PH/15 Installed PCRE 6.2
2980 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
2982 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
2983 of the problem. Specifically, suggested +O2 rather than +O1 for the
2986 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
2988 PH/20 If a delivery was routed to a non-standard port by means of an SRV
2989 record, the port was not correctly logged when the outgoing_port log
2990 selector was set (it logged the transort's default port).
2992 PH/21 Added support for host-specific ports to manualroute, queryprogram,
2993 fallback_hosts, and "hosts" in the smtp transport.
2995 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
2996 host errors such as "Connection refused".
2998 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
2999 authentication with radiusclient 0.4.9:
3001 - Error returned from rc_read_config was caught wrongly
3002 - Username/password not passed on to radius server due to wrong length.
3004 The presumption is that some radiusclient API changes for 4.51/PH/17
3005 were not taken care of correctly. The code is still untested by me (my
3006 Linux distribution still has 0.3.2 of radiusclient), but it was
3007 contributed by a Radius user.
3009 PH/24 When doing a callout, the value of $domain wasn't set correctly when
3010 expanding the "port" option of the smtp transport.
3012 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
3013 while reading a MIME header. Thanks to Tom Hughes for a patch.
3015 PH/24 Include config.h inside local_scan.h so that configuration settings are
3018 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
3019 that in an ACL for RCPT (for example), you can examine exactly what was
3022 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
3023 commands, but it was not correctly comparing the address with the actual
3024 client host address. Thus, it would show the EHLO address in Received:
3025 header lines when this was not necessary.
3027 PH/27 Added the % operator to ${eval:}.
3029 PH/28 Exim tries to create and chdir to its spool directory when it starts;
3030 it should be ignoring failures (because with -C, for example, it has lost
3031 privilege). It wasn't ignoring creation failures other than "already
3034 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
3037 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
3038 because an input line was too long, either on its own, or by virtue of
3039 too many continuations, the temporary file was not being removed, and the
3040 return code was incorrect.
3042 PH/31 Missing "BOOL" in function definition in filtertest.c.
3044 PH/32 Applied Sieve patches from the maintainer.
3046 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
3048 PH/33 Added "verify = not_blind".
3050 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
3051 Local/Makefile (with some defaults set). These are used in built scripts
3052 such as exicyclog, but they have never been used in the exim_install
3053 script (though there are many overriding facilities there). I have
3054 arranged that the exim_install script now takes note of these two
3057 PH/35 Installed configuration files for Dragonfly.
3059 PH/36 When a locally submitted message by a trusted user did not contain a
3060 From: header, and the sender address was obtained from -f or from an SMTP
3061 MAIL command, and the trusted user did not use -F to supply a sender
3062 name, $originator_name was incorrectly used when constructing a From:
3063 header. Furthermore, $originator_name was used for submission mode
3064 messages from external hosts without From: headers in a similar way,
3065 which is clearly wrong.
3067 PH/37 Added control=suppress_local_fixups.
3069 PH/38 When log_selector = +received_sender was set, and the addition of the
3070 sender made the log line's construction buffer exactly full, or one byte
3071 less than full, an overflow happened when the terminating "\n" was
3074 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
3075 when the result of a list match is failure because a DNS lookup failed.
3077 PH/40 RM_COMMAND is now used in the building process.
3079 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
3080 the "build-* directories that it finds.
3082 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
3083 address in a domain literal was a prefix of an interface address.
3085 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
3086 when verifying a sender address, unless rewrite_headers is false.
3088 PH/44 Wrote a long comment about why errors_to addresses are verified as
3089 recipients, not senders.
3091 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
3092 the ratelimit ACL was added.
3094 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
3096 PH/46 Added extra information about PostgreSQL errors to the error string.
3098 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
3099 avoiding the need to install special zones in a real server. This is
3100 backwards compatible; if it can't find the fake resolver, it drops back.
3101 Thus, both old and new test suites can be run.
3103 TF/02 Added util/ratelimit.pl
3105 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
3106 clock is set back in time.
3108 TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
3109 Candler <B.Candler@pobox.com>.
3111 TF/05 The fix for PH/43 was not completely correct; widen_domains is always
3112 OK for addresses that are the result of redirections.
3114 PH/48 A number of further additions for the benefit of the new test suite,
3115 including a fake gethostbyname() that interfaces to the fake DNS resolver
3118 TF/06 The fix for widen_domains has also been applied to qualify_single and
3119 search_parents which are the other dnslookup options that can cause
3122 PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
3125 PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
3127 TF/07 Exim produced the error message "an SRV record indicated no SMTP
3128 service" if it encountered an MX record with an empty target hostname.
3129 The message is now "an MX or SRV record indicated no SMTP service".
3131 TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
3132 if the DNS of the sending site is misconfigured. This is quite a
3133 common situation. This change restores the behaviour of treating a
3134 helo verification defer as a failure.
3136 PH/51 If self=fail was set on a router, the bounce message did not include the
3137 actual error message.
3143 TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
3145 PH/01 When a transport filter timed out in a pipe delivery, and the pipe
3146 command itself ended in error, the underlying message about the transport
3147 filter timeout was being overwritten with the pipe command error. Now the
3148 underlying error message should be appended to the second error message.
3150 TK/01 Fix poll() being unavailable on Mac OSX 10.2.
3152 PH/02 Reduce the amount of output that "make" produces by default. Full output
3153 can still be requested.
3155 PH/03 The warning log line about a condition test deferring for a "warn" verb
3156 was being output only once per connection, rather than after each
3157 occurrence (because it was using the same function as for successful
3158 "warn" verbs). This seems wrong, so I have changed it.
3160 TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
3161 it should not have, which might have caused a crash in the right
3162 circumstances, but probably never did.
3164 PH/04 Installed a modified version of Tony Finch's patch to make submission
3165 mode fix the return path as well as the Sender: header line, and to
3166 add a /name= option so that you can make the user's friendly name appear
3169 TF/03 Added the control = fakedefer ACL modifier.
3171 TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
3172 Mark Lowes for thorough testing.
3174 TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
3176 TK/03 Merged latest SRS patch from Miles Wilton.
3178 PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
3179 with the definition in sysexits.h (which is #included earlier).
3180 Fortunately, Exim does not actually use EX_OK. The code used to try to
3181 preserve the sysexits.h value, by assumimg that macro definitions were
3182 scanned for macro replacements. I have been disabused of this notion,
3183 so now the code just undefines EX_OK before #including unistd.h.
3185 PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
3186 in the smtp transport. When a block could not be written in a single
3187 write() function, the timeout was being re-applied to each part-write.
3188 This seems wrong - if the receiver was accepting one byte at a time it
3189 would take for ever. The timeout is now adjusted when this happens. It
3190 doesn't have to be particularly precise.
3192 TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
3193 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
3195 PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
3196 without a domain if the check to <postmaster@domain> fails.
3198 SC/01 Eximstats: added -xls and the ability to specify output files
3199 (patch written by Frank Heydlauf).
3201 SC/02 Eximstats: use FileHandles for outputing results.
3203 SC/03 Eximstats: allow any combination of xls, txt, and html output.
3205 SC/04 Eximstats: fixed display of large numbers with -nvr option
3207 SC/05 Eximstats: fixed merging of reports with empty tables.
3209 SC/06 Eximstats: added the -include_original_destination flag
3211 SC/07 Eximstats: removed tabs and trailing whitespace.
3213 TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
3215 TK/06 MBOX spool code: Add real "From " MBOX separator line
3216 so the .eml file is really in mbox format (even though
3217 most programs do not really care). Patch from Alex Miller.
3219 TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
3220 The latter is generated from $received_to and is only set if the
3221 message has one envelope recipient. SA can use these headers,
3222 obviously out-of-the-box. Patch from Alex Miller.
3224 PH/08 The ${def test on a variable was returning false if the variable's
3225 value was "0", contrary to what the specification has always said!
3226 The result should be true unless the variable is empty.
3228 PH/09 The syntax error of a character other than { following "${if
3229 def:variable_name" (after optional whitespace) was not being diagnosed.
3230 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
3231 accidental colon was present, for example, could give incorrect results.
3233 PH/10 Tidied the code in a number of places where the st_size field of a stat()
3234 result is used (not including appendfile, where other changes are about
3237 PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
3238 This involved changing a lot of size variables from int to off_t. It
3239 should work with maildirs and everything.
3241 TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
3242 spamd dying while we are connected to it.
3244 TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
3247 PH/12 Applied Alex Kiernan's patch for the API change for the error callback
3248 function for BDB 4.3.
3250 PH/13 Changed auto_thaw such that it does not apply to bounce messages.
3252 PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
3253 the sources for PCRE have been re-arranged and more files are now
3256 PH/15 The code I had for printing potentially long long variables in PH/11
3257 above was not the best (it lost precision). The length of off_t variables
3258 is now inspected at build time, and an appropriate printing format (%ld
3259 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
3260 to be "long long int" or "long int". This is needed for the internal
3261 formatting function string_vformat().
3263 PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
3264 the configuration file to be ":syslog", then the script "guesses" where
3265 the logs files are, rather than using the compiled in default. In our
3266 case the guess is not the same as the compiled default, so the script
3267 suddenly stopped working when I started to use syslog. The patch checks
3268 to see if log_file_path is "". If so, it attempts to read it from exim
3269 with no configuration file to get the compiled in version, before it
3270 falls back to the previous guessing code."
3272 TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
3273 implementing BATV in an Exim configuration. See NewStuff for the gory
3276 PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
3277 Makefile that are specific to HP-UX.
3279 PH/18 If the "use_postmaster" option was set for a recipient callout together
3280 with the "random" option, the postmaster address was used as the MAIL
3281 FROM address for the random test, but not for the subsequent recipient
3282 test. It is now used for both.
3284 PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
3285 patch removes a few documentation additions to RFC 3028, because the
3286 latest draft now contains them. It adds the new en;ascii-case comparator
3287 and a new error check for 8bit text in MIME parts. Comparator and
3288 require names are now matched exactly. I enabled the subaddress
3289 extension, but it is not well tested yet (read: it works for me)."
3291 PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
3292 rework some of the code of TK/09 above to avoid the hardwired use of
3293 "%lld" and "long long". Replaced the call to snprintf() with a call to
3296 PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
3297 records point to non-existent hosts", "retry timeout exceeded", and
3298 "retry time not reached for any host after a long failure period".
3300 PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
3301 experimental DomainKeys support:
3303 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
3304 (2) On an error such as an illegally used "control", the wrong name for
3305 the control was given.
3307 These problems did NOT occur unless DomainKeys support was compiled.
3309 PH/23 Added daemon_startup_retries and daemon_startup_sleep.
3311 PH/24 Added ${if match_ip condition.
3313 PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
3314 databases so that it will be absolutely obvious if a crash occurs in the
3315 DB library. This is a regular occurrence (often caused by mis-matched
3318 PH/26 Insert a lot of missing (void) casts for functions such as chown(),
3319 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
3320 picked up on a user's system that detects such things. There doesn't seem
3321 to be a gcc warning option for this - only an attribute that has to be
3322 put on the function's prototype. It seems that in Fedora Core 4 they have
3323 set this on a number of new functions. No doubt there will be more in due
3326 PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
3327 specify a transport. However, if an address that was verified by such a
3328 router was the subject of a callout, Exim crashed because it tried to
3329 read the rcpt_include_affixes from the non-existent transport. Now it
3330 just assumes that the setting of that option is false. This bug was
3331 introduced by 4.51/PH/31.
3333 PH/28 Changed -d+all to exclude +memory, because that information is very
3334 rarely of interest, but it makes the output a lot bigger. People tend to
3335 do -d+all out of habit.
3337 PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
3338 code in os-type was giving problems when libc.so lives in lib64, like on
3341 PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
3342 aren't the modern standard, and it seems that some systems' include files
3343 don't always have them. Exim was already checking for some of the newer
3344 ones like T_AAAA, and defining it itself. I've added checks for all the
3345 record types that Exim uses.
3347 PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
3348 not automatically generating a new one, as it is supposed to. This
3349 prevented TLS from working. If the file did exist, but contained invalid
3350 data, a new version was generated, as expected. It was only the case of a
3351 non-existent file that was broken.
3353 TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
3354 with a change in libdomainkeys > 0.64.
3356 TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
3357 from DNS. If the selector record carries the flag, it now has
3358 precedence over the domain-wide flag.
3360 TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
3362 PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
3363 the use of a port name that isn't defined in /etc/services) occurred, the
3364 message was deferred as in a normal delivery, and thus remained on the
3365 spool, instead of being failed because of the mua_wrapper setting. This
3366 is now fixed, and I tidied up some of the mua_wrapper messages at the
3369 SC/08 Eximstats: whilst parsing the mainlog(s), store information about
3370 the messages in a hash of arrays rather than using individual hashes.
3371 This is a bit cleaner and results in dramatic memory savings, albeit
3372 at a slight CPU cost.
3374 SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
3375 as requested by Marc Sherman.
3377 SC/10 Eximstats: added histograms for user specified patterns as requested
3380 SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
3382 PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
3383 fopen() in the content-scanning modules that did not already have it.
3389 TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
3390 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
3392 TK/02 Fix ACL "control" statement not being available in MIME ACL.
3394 TK/03 Fix ACL "regex" condition not being available in MIME ACL.
3396 PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
3397 to test Sieve filters that use "vacation".
3399 PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
3400 that changes the way the GnuTLS parameters are stored in the cache file.
3401 The new format can be generated externally. For backward compatibility,
3402 if the data in the cache doesn't make sense, Exim assumes it has read an
3403 old-format file, and it generates new data and writes a new file. This
3404 means that you can't go back to an older release without removing the
3407 PH/03 A redirect router that has both "unseen" and "one_time" set does not
3408 work if there are any delivery delays because "one_time" forces the
3409 parent to be marked "delivered", so its unseen clone is never tried
3410 again. For this reason, Exim now forbids the simultaneous setting of
3413 PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
3414 redirected to themselves ("homonym" addresses). Read the long ChangeLog
3415 entry if you want to know the details. The fix, however, neglected to
3416 consider the case when local delivery batching is involved. The test for
3417 "previously delivered" was not happening when checking to see if an
3418 address could be batched with a previous (undelivered) one; under
3419 certain circumstances this could lead to multiple deliveries to the same
3422 PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
3423 in its include files, and this causes problems building Exim.
3425 PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
3426 header_syntax) but Exim was just ignoring anything given after a slash.
3427 In particular, this caused confusion with an attempt to use "verify =
3428 reverse_host_lookup/defer_ok". An error is now given when options are
3429 supplied for verify items that do not have them. (Maybe reverse_host_
3430 lookup should have a defer_ok option, but that's a different point.)
3432 PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
3433 defined by RFC 821) to 2048, because there were problems with some AUTH
3434 commands, and RFC 1869 says the size should be increased for extended
3435 SMTP commands that take arguments.
3437 PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
3440 PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
3441 "unknown" error; now it says that the functionality isn't in the binary.
3443 PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
3444 an address' error message when a string expansion fails (syntax or
3445 whatever). Otherwise the password may appear in the log. Following change
3446 PH/42 below, there is no longer a chance of it appearing in a bounce
3449 PH/11 Installed exipick version 20050225.0 from John Jetmore.
3451 PH/12 If the last host in a fallback_hosts list was multihomed, only the first
3452 of its addresses was ever tried. (Bugzilla bug #2.)
3454 PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
3455 the result incorrectly in the debug output. (It correctly added a newline
3456 to what was transported.)
3458 TF/01 Added $received_time.
3460 PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
3461 commented out examples of how to interface to a virus scanner and to
3462 SpamAssassin. Also added commented examples of av_scanner and
3463 spamd_address settings.
3465 PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
3466 and controls are allowed in which ACLs. There were a couple of minor
3467 errors. Some of the entries in the conditions table (which is a table of
3468 where they are NOT allowed) were getting very unwieldy; rewrote them as a
3469 negation of where the condition IS allowed.
3471 PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
3473 PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
3474 header file does not have a version number, so I've had to invent a new
3475 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
3476 API. The code is untested by me (my Linux distribution still has 0.3.2 of
3477 radiusclient), but it was contributed by a Radius user.
3479 PH/18 Installed Lars Mainka's patch for the support of CRL collections in
3480 files or directories, for OpenSSL.
3482 PH/19 When an Exim process that is running as root has to create an Exim log
3483 file, it does so in a subprocess that runs as exim:exim so as to get the
3484 ownership right at creation (otherwise, other Exim processes might see
3485 the file with the wrong ownership). There was no test for failure of this
3486 fork() call, which would lead to the process getting stuck as it waited
3487 for a non-existent subprocess. Forks do occasionally fail when resources
3488 run out. I reviewed all the other calls to fork(); they all seem to check
3491 PH/20 When checking for unexpected SMTP input at connect time (before writing
3492 the banner), Exim was not dealing correctly with a non-positive return
3493 from the read() function. If the client had disconnected by this time,
3494 the result was a log entry for a synchronization error with an empty
3495 string after "input=" when read() returned zero. If read() returned -1
3496 (an event I could not check), uninitialized data bytes were printed.
3497 There were reports of junk text (parts of files, etc) appearing after
3500 PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
3502 PH/22 Added support for macro redefinition, and (re)definition in between
3503 driver and ACL definitions.
3505 PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
3506 forgetting to use the resulting value; it was using the unexpanded value.
3508 PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
3509 hadn't been configured. The fix is from Juergen Kreileder, who
3510 understands it better than I do:
3512 "Here's what I see happening with three configured cyrus_sasl
3513 authenticators configured (plain, login, cram-md5):
3515 On startup auth_cyrus_sasl_init() gets called for each of these.
3516 This means three calls to sasl_listmech() without a specified mech_list.
3517 => SASL tests which mechs of all available mechs actually work
3518 => three warnings about OTP not working
3519 => the returned list contains: plain, login, cram-md5, digest-md5, ...
3521 With the patch, sasl_listmech() also gets called three times. But now
3522 SASL's mech_list option is set to the server_mech specified in the the
3523 authenticator. Or in other words, the answer from sasl_listmech()
3524 gets limited to just the mech you're testing for (which is different
3526 => the return list contains just 'plain' or 'login', 'cram-md5' or
3527 nothing depending on the value of ob->server_mech.
3529 I've just tested the patch: Authentication still works fine,
3530 unavailable mechs specified in the exim configuration are still
3531 caught, and the auth.log warnings about OTP are gone."
3533 PH/25 When debugging is enabled, the contents of the command line are added
3534 to the debugging output, even when log_selector=+arguments is not
3537 PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
3538 answer is "GNU", and only if the return is "GNU/something" is the answer
3541 PH/27 $acl_verify_message is now set immediately after the failure of a
3542 verification in an ACL, and so is available in subsequent modifiers. In
3543 particular, the message can be preserved by coding like this:
3545 warn !verify = sender
3546 set acl_m0 = $acl_verify_message
3548 Previously, $acl_verify_message was set only while expanding "message"
3549 and "log_message" when a very denied access.
3551 PH/28 Modified OS/os.c-Linux with
3553 -#ifndef OS_LOAD_AVERAGE
3554 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
3556 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
3557 nomenclature these days.)
3559 PH/29 Installed patch from the Sieve maintainer that adds the options
3560 sieve_useraddress and sieve_subaddress to the redirect router.
3562 PH/30 In these circumstances:
3563 . Two addresses routed to the same list of hosts;
3564 . First host does not offer TLS;
3565 . First host accepts first address;
3566 . First host gives temporary error to second address;
3567 . Second host offers TLS and a TLS session is established;
3568 . Second host accepts second address.
3569 Exim incorrectly logged both deliveries with the TLS parameters (cipher
3570 and peerdn, if requested) that were in fact used only for the second
3573 PH/31 When doing a callout as part of verifying an address, Exim was not paying
3574 attention to any local part prefix or suffix that was matched by the
3575 router that accepted the address. It now behaves in the same way as it
3576 does for delivery: the affixes are removed from the local part unless
3577 rcpt_include_affixes is set on the transport.
3579 PH/32 Add the sender address, as F=<...>, to the log line when logging a
3580 timeout during the DATA phase of an incoming message.
3582 PH/33 Sieve envelope tests were broken for match types other than :is. I have
3583 applied a patch sanctioned by the Sieve maintainer.
3585 PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
3586 the uid or gid is negative. A case of a negative gid caused this to be
3587 noticed. The fix allows for either to be negative.
3589 PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
3590 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
3593 PH/36 The change PH/12 above was broken. Fixed it.
3595 PH/37 Exim used to check for duplicate addresses in the middle of routing, on
3596 the grounds that routing the same address twice would always produce the
3597 same answer. This might have been true once, but it is certainly no
3598 longer true now. Routing a child address may depend on the previous
3599 routing that produced that child. Some complicated redirection strategies
3600 went wrong when messages had multiple recipients, and made Exim's
3601 behaviour dependent on the order in which the addresses were given.
3603 I have moved the duplicate checking until after the routing is complete.
3604 Exim scans the addresses that are assigned to local and remote
3605 transports, and removes any duplicates. This means that more work will be
3606 done, as duplicates will always all be routed, but duplicates are
3607 presumably rare, so I don't expect this is of any significance.
3609 For deliveries to pipes, files, and autoreplies, the duplicate checking
3610 still happens during the routing process, since they are not going to be
3613 PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
3614 It corrects a timeout issue with spamd. This is Ian's comment: "The
3615 background is that sometimes spamd either never reads data from a
3616 connection it has accepted, or it never writes response data. The exiscan
3617 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
3618 blindly assumes that writes won't block so it may never time out."
3620 PH/39 Allow G after quota size as well as K and M.
3622 PH/40 The value set for $authenticated_id in an authenticator may not contain
3623 binary zeroes or newlines because the value is written to log lines and
3624 to spool files. There was no check on this. Now the value is run through
3625 the string_printing() function so that such characters are converted to
3626 printable escape sequences.
3628 PH/41 $message_linecount is a new variable that contains the total number of
3629 lines in the message. Compare $body_linecount, which is the count for the
3632 PH/42 Exim no longer gives details of delivery errors for specific addresses in
3633 bounce and delay warning messages, except in certain special cases, which
3636 (a) An SMTP error message from a remote host;
3637 (b) A message specified in a :fail: redirection;
3638 (c) A message specified in a "fail" command in a system filter;
3639 (d) A message specified in a FAIL return from the queryprogram router;
3640 (e) A message specified by the cannot_route_message router option.
3642 In these cases only, Exim does include the error details in bounce and
3643 warning messages. There are also a few cases where bland messages such
3644 as "unrouteable address" or "local delivery error" are given.
3646 PH/43 $value is now also set for the "else" part of a ${run expansion.
3648 PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
3649 being worked on, but at least Exim now implements the latest version to
3652 PH/45 In a pipe transport, although a timeout while waiting for the pipe
3653 process to complete was treated as a delivery failure, a timeout while
3654 writing the message to the pipe was logged, but erroneously treated as a
3655 successful delivery. Such timeouts include transport filter timeouts. For
3656 consistency with the overall process timeout, these timeouts are now
3657 treated as errors, giving rise to delivery failures by default. However,
3658 there is now a new Boolean option for the pipe transport called
3659 timeout_defer, which, if set TRUE, converts the failures into defers for
3660 both kinds of timeout. A transport filter timeout is now identified in
3663 PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
3664 systems where "make" and "gmake" are different, calling "gmake" at top
3665 level broke things. I've arranged for the value of $(MAKE) to be passed
3666 from the Makefile to this script so that it can call the same version of
3670 A note about Exim versions 4.44 and 4.50
3671 ----------------------------------------
3673 Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
3674 changes of various kinds. As a consequence, a big documentation update was
3675 needed. This delayed the release for rather longer than seemed good, especially
3676 in the light of a couple of (minor) security issues. Therefore, the changes
3677 that fixed bugs were backported into 4.43, to create a 4.44 maintenance
3678 release. So 4.44 and 4.50 are in effect two different branches that both start
3681 I have left the 4.50 change log unchanged; it contains all the changes since
3682 4.43. The change log for 4.44 is below; many of its items are identical to
3683 those for 4.50. This seems to be the most sensible way to preserve the
3684 historical information.
3690 1. Minor wording change to the doc/README.SIEVE file.
3692 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
3693 computation of the current number of files was incorrect.
3695 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
3696 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
3699 4. Give more explanation in the error message when the command for a transport
3700 filter fails to execute.
3702 5. There are several places where Exim runs a non-Exim command in a
3703 subprocess. The SIGUSR1 signal should be disabled for these processes. This
3704 was being done only for the command run by the queryprogram router. It is
3705 now done for all such subprocesses. The other cases are: ${run, transport
3706 filters, and the commands run by the lmtp and pipe transports.
3708 6. Added CONFIGURE_GROUP build-time option.
3710 7. Some older OS have a limit of 256 on the maximum number of file
3711 descriptors. Exim was using setrlimit() to set 1000 as a large value
3712 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
3713 systems. I've change it so that if it can't get 1000, it tries for 256.
3715 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
3716 was an oversight, and furthermore, ever since the addition of extra
3717 controls (e.g. 4.43/32), the checks on when to allow different forms of
3718 "control" were broken. There should now be diagnostics for all cases when a
3719 control that does not make sense is encountered.
3721 9. Added the /retain_sender option to "control=submission".
3723 10. $recipients is now available in the predata ACL (oversight).
3725 11. Tidy the search cache before the fork to do a delivery from a message
3726 received from the command line. Otherwise the child will trigger a lookup
3727 failure and thereby defer the delivery if it tries to use (for example) a
3728 cached ldap connection that the parent has called unbind on.
3730 12. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
3731 of $address_data from the recipient verification was clobbered by the
3732 sender verification.
3734 13. The value of address_data from a sender verification is now available in
3735 $sender_address_data in subsequent conditions in the ACL statement.
3737 14. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
3739 15. Added a new option "connect=<time>" to callout options, to set a different
3742 16. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
3743 was its contents. (It was OK if the option was not defined at all.)
3745 17. A "Completed" log line is now written for messages that are removed from
3746 the spool by the -Mrm option.
3748 18. New variables $sender_verify_failure and $recipient_verify_failure contain
3749 information about exactly what failed.
3751 19. Added -dd to debug only the daemon process.
3753 20. Incorporated Michael Haardt's patch to ldap.c for improving the way it
3754 handles timeouts, both on the server side and network timeouts. Renamed the
3755 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
3757 21. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
3758 It is now set to "smtps".
3760 22. $host_address is now set to the target address during the checking of
3761 ignore_target_hosts.
3763 23. When checking ignore_target_hosts for an ipliteral router, no host name was
3764 being passed; this would have caused $sender_host_name to have been used if
3765 matching the list had actually called for a host name (not very likely,
3766 since this list is usually IP addresses). A host name is now passed as
3769 24. Changed the calls that set up the SIGCHLD handler in the daemon to use the
3770 code that specifies a non-restarting handler (typically sigaction() in
3771 modern systems) in an attempt to fix a rare and obscure crash bug.
3773 25. Narrowed the window for a race in the daemon that could cause it to ignore
3774 SIGCHLD signals. This is not a major problem, because they are used only to
3775 wake it up if nothing else does.
3777 26. A malformed maildirsize file could cause Exim to calculate negative values
3778 for the mailbox size or file count. Odd effects could occur as a result.
3779 The maildirsize information is now recalculated if the size or filecount
3782 27. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
3783 support for a long time. Removed HAVE_SYS_VFS_H.
3785 28. Installed the latest version of exipick from John Jetmore.
3787 29. In an address list, if the pattern was not a regular expression, an empty
3788 subject address (from a bounce message) matched only if the pattern was an
3789 empty string. Non-empty patterns were not even tested. This was the wrong
3790 because it is perfectly reasonable to use an empty address as part of a
3791 database query. An empty address is now tested by patterns that are
3792 lookups. However, all the other forms of pattern expect the subject to
3793 contain a local part and a domain, and therefore, for them, an empty
3794 address still always fails if the pattern is not itself empty.
3796 30. Exim went into a mad DNS loop when attempting to do a callout where the
3797 host was specified on an smtp transport, and looking it up yielded more
3798 than one IP address.
3800 31. Re-factored the code for checking spool and log partition space into a
3801 function that finds that data and another that does the check. The former
3802 is then used to implement four new variables: $spool_space, $log_space,
3803 $spool_inodes, and $log_inodes.
3805 32. The RFC2047 encoding function was originally intended for short strings
3806 such as real names; it was not keeping to the 75-character limit for
3807 encoded words that the RFC imposes. It now respects the limit, and
3808 generates multiple encoded words if necessary. To be on the safe side, I
3809 have increased the buffer size for the ${rfc2047: expansion operator from
3812 33. It is now permitted to omit both strings after an "if" condition; if the
3813 condition is true, the result is "true". As before, when the second string
3814 is omitted, a false condition yields an empty string. This makes it less
3815 cumbersome to write custom ACL and router conditions.
3817 34. Failure to deliver a bounce message always caused it to be frozen, even if
3818 there was an errors_to setting on the router. The errors_to setting is now
3821 35. If an IPv6 address is given for -bh or -bhc, it is now converted to the
3822 canonical form (fully expanded) before being placed in
3823 $sender_host_address.
3825 36. The table in the code that translates DNS record types into text (T_A to
3826 "A" for instance) was missing entries for NS and CNAME. It is just possible
3827 that this could have caused confusion if both these types were looked up
3828 for the same domain, because the text type is used as part of Exim's
3829 per-process caching. But the chance of anyone hitting this buglet seems
3832 37. The dnsdb lookup has been extended in a number of ways.
3834 (1) There is a new type, "zns", which walks up the domain tree until it
3835 finds some nameserver records. It should be used with care.
3837 (2) There is a new type, "mxh", which is like "mx" except that it returns
3838 just the host names, not the priorities.
3840 (3) It is now possible to give a list of domains (or IP addresses) to be
3841 looked up. The behaviour when one of the lookups defers can be
3842 controlled by a keyword.
3844 (4) It is now possible to specify the separator character for use when
3845 multiple records are returned.
3847 38. The dnslists ACL condition has been extended: it is now possible to supply
3848 a list of IP addresses and/or domains to be looked up in a particular DNS
3851 39. Added log_selector=+queue_time_overall.
3853 40. When running the queue in the test harness, wait just a tad after forking a
3854 delivery process, to get repeatability of debugging output.
3856 41. Include certificate and key file names in error message when GnuTLS fails
3857 to set them up, because the GnuTLS error message doesn't include the name
3858 of the failing file when there is a problem reading it.
3860 42. Allow both -bf and -bF in the same test run.
3862 43. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
3864 44. The "Exiscan patch" is now merged into the mainline Exim source.
3866 45. Sometimes the final signoff response after QUIT could fail to get
3867 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
3868 < 0 before doing a fflush(). This bug looks as though it goes back to the
3869 introduction of TLS in release 3.20, but "sometimes" must have been rare
3870 because the tests only now provoked it.
3872 46. Reset the locale to "C" after calling embedded Perl, in case it was changed
3873 (this can affect the format of dates).
3875 47. exim_tidydb, when checking for the continued existence of a message for
3876 which it has found a message-specific retry record, was not finding
3877 messages that were in split spool directories. Consequently, it was
3878 deleting retry records that should have stayed in existence.
3880 48. Steve fixed some bugs in eximstats.
3882 49. The SPA authentication driver was not abandoning authentication and moving
3883 on to the next authenticator when an expansion was forced to fail,
3884 contradicting the general specification for all authenticators. Instead it
3885 was generating a temporary error. It now behaves as specified.
3887 50. The default ordering of permitted cipher suites for GnuTLS was pessimal
3888 (the order specifies the preference for clients). The order is now AES256,
3889 AES128, 3DES, ARCFOUR128.
3891 51. Small patch to Sieve code - explicitly set From: when generating an
3894 52. Exim crashed if a remote delivery caused a very long error message to be
3895 recorded - for instance if somebody sent an entire SpamAssassin report back
3896 as a large number of 550 error lines. This bug was coincidentally fixed by
3897 increasing the size of one of Exim's internal buffers (big_buffer) that
3898 happened as part of the Exiscan merge. However, to be on the safe side, I
3899 have made the code more robust (and fixed the comments that describe what
3902 53. Now that there can be additional text after "Completed" in log lines (if
3903 the queue_time_overall log selector is set), a one-byte patch to exigrep
3904 was needed to allow it to recognize "Completed" as not the last thing in
3907 54. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
3908 patch that reportedly fixes this has been added. I am not expert enough to
3909 create a test for it. This is what the patch creator wrote:
3911 "I found a little strange behaviour of ldap code when working with
3912 Windows 2003 AD Domain, where users was placed in more than one
3913 Organization Units. When I tried to give exim partial DN, the exit code
3914 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
3915 But simultaneously result of request was absolutely normal ldap result,
3916 so I produce this patch..."
3918 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
3919 REFERENCE, so I have modified the code to exclude the patch when that macro
3922 55. Some experimental protocols are using DNS PTR records for new purposes. The
3923 keys for these records are domain names, not reversed IP addresses. The
3924 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
3925 leaves it alone. Component reversal etc. now happens only for IP addresses.
3928 56. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
3930 57. Double the size of the debug message buffer (to 2048) so that more of very
3931 long debug lines gets shown.
3933 58. The exicyclog utility now does better if the number of log files to keep
3934 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
3936 59. Two changes related to the smtp_active_hostname option:
3938 (1) $smtp_active_hostname is now available as a variable.
3939 (2) The default for smtp_banner uses $smtp_active_hostname instead
3940 of $primary_hostname.
3942 60. The host_aton() function is supposed to be passed a string that is known
3943 to be a valid IP address. However, in the case of IPv6 addresses, it was
3944 not checking this. This is a hostage to fortune. Exim now panics and dies
3945 if the condition is not met. A case was found where this could be provoked
3946 from a dnsdb PTR lookup with an IPv6 address that had more than 8
3947 components; fortuitously, this particular loophole had already been fixed
3948 by change 4.50/55 above.
3950 If there are any other similar loopholes, the new check in host_aton()
3951 itself should stop them being exploited. The report I received stated that
3952 data on the command line could provoke the exploit when Exim was running as
3953 exim, but did not say which command line option was involved. All I could
3954 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
3955 running as the user.
3958 61. There was a buffer overflow vulnerability in the SPA authentication code
3959 (which came originally from the Samba project). I have added a test to the
3960 spa_base64_to_bits() function which I hope fixes it.
3963 62. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
3964 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
3966 63. The daemon start-up calls getloadavg() while still root for those OS that
3967 need the first call to be done as root, but it missed one case: when
3968 deliver_queue_load_max is set with deliver_drop_privilege. This is
3969 necessary for the benefit of the queue runner, because there is no re-exec
3970 when deliver_drop_privilege is set.
3972 64. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
3973 This has been fixed.
3975 65. Caching of lookup data for "hosts =" ACL conditions, when a named host list
3976 was in use, was not putting the data itself into the right store pool;
3977 consequently, it could be overwritten for a subsequent message in the same
3978 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
3981 66. Added hosts_max_try_hardlimit to the smtp transport, default 50.
3983 67. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
3984 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
3985 the function were treating the return as a boolean value, which happened to
3986 work because 0=false and not-0=true, but is not correct code.
3988 68. The host_aton() function was not handling scoped IPv6 addresses (those
3989 with, for example, "%eth0" on the end) correctly.
3991 69. Fixed some compiler warnings in acl.c for the bitmaps specified with
3992 negated items (that is, ~something) in unsigned ints. Some compilers
3993 apparently mutter when there is no cast.
3995 70. If an address verification called from an ACL failed, and did not produce a
3996 user-specific message (i.e. there was only a "system" message), nothing was
3997 put in $acl_verify_message. In this situation, it now puts the system
4000 71. Change 4.23/11 added synchronization checking at the start of an SMTP
4001 session; change 4.31/43 added the unwanted input to the log line - except
4002 that it did not do this in the start of session case. It now does.
4004 72. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
4005 This is wrong and can cause the other end to generate a synchronization
4006 error if it is another Exim or anything else that does the synchronization
4007 check. A QUIT command is no longer sent after a timeout.
4009 73. $host_lookup_deferred has been added, to make it easier to detect DEFERs
4010 during host lookups.
4012 74. The defer_ok option of callout verification was not working if it was used
4013 when verifying addresses in header lines, that is, for this case:
4015 verify = header_sender/callout=defer_ok
4017 75. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
4018 those file descriptors could be used for SMTP connections. If anything
4019 wrote to stderr (the example that came up was "warn" in embedded Perl), it
4020 could be sent to the SMTP client, causing chaos. The daemon now opens
4021 stdin, stdout, and stderr to /dev/null when it puts itself into the
4024 76. Arrange for output from Perl's "warn" command to be written to Exim's main
4025 log by default. The user can override this with suitable Perl magic.
4027 77. The use of log_message on a "discard" ACL verb, which is supposed to add to
4028 the log message when discard triggers, was not working for the DATA ACL or
4029 for the non-SMTP ACL.
4031 78. Error message wording change in sieve.c.
4033 79. If smtp_accept_max_per_host was set, the number of connections could be
4034 restricted to fewer than expected, because the daemon was trying to set up
4035 a new connection before checking whether the processes handling previous
4036 connections had finished. The check for completed processes is now done
4037 earlier. On busy systems, this bug wouldn't be noticed because something
4038 else would have woken the daemon, and it would have reaped the completed
4041 80. If a message was submitted locally by a user whose login name contained one
4042 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
4043 It caused a spool format error. I have fixed the spool reading code. A
4044 related problem was that the "from" clause in the Received: line became
4045 illegal because of the space(s). It is now covered by ${quote_local_part.
4047 81. Included the latest eximstats from Steve (adds average sizes to HTML Top
4050 82. Updated OS/Makefile-AIX as per message from Mike Meredith.
4052 83. Patch from Sieve maintainer to fix unterminated string problem in
4053 "vacation" handling.
4055 84. Some minor changes to the Linux configuration files to help with other
4056 OS variants using glibc.
4058 85. One more patch for Sieve to update vacation handling to latest spec.
4061 ----------------------------------------------------
4062 See the note above about the 4.44 and 4.50 releases.
4063 ----------------------------------------------------
4069 1. Change 4.43/35 introduced a bug that caused file counts to be
4070 incorrectly computed when quota_filecount was set in an appendfile
4073 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
4074 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
4077 3. Give more explanation in the error message when the command for a transport
4078 filter fails to execute.
4080 4. There are several places where Exim runs a non-Exim command in a
4081 subprocess. The SIGUSR1 signal should be disabled for these processes. This
4082 was being done only for the command run by the queryprogram router. It is
4083 now done for all such subprocesses. The other cases are: ${run, transport
4084 filters, and the commands run by the lmtp and pipe transports.
4086 5. Some older OS have a limit of 256 on the maximum number of file
4087 descriptors. Exim was using setrlimit() to set 1000 as a large value
4088 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
4089 systems. I've change it so that if it can't get 1000, it tries for 256.
4091 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
4092 was an oversight, and furthermore, ever since the addition of extra
4093 controls (e.g. 4.43/32), the checks on when to allow different forms of
4094 "control" were broken. There should now be diagnostics for all cases when a
4095 control that does not make sense is encountered.
4097 7. $recipients is now available in the predata ACL (oversight).
4099 8. Tidy the search cache before the fork to do a delivery from a message
4100 received from the command line. Otherwise the child will trigger a lookup
4101 failure and thereby defer the delivery if it tries to use (for example) a
4102 cached ldap connection that the parent has called unbind on.
4104 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
4105 of $address_data from the recipient verification was clobbered by the
4106 sender verification.
4108 10. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
4109 was its contents. (It was OK if the option was not defined at all.)
4111 11. A "Completed" log line is now written for messages that are removed from
4112 the spool by the -Mrm option.
4114 12. $host_address is now set to the target address during the checking of
4115 ignore_target_hosts.
4117 13. When checking ignore_target_hosts for an ipliteral router, no host name was
4118 being passed; this would have caused $sender_host_name to have been used if
4119 matching the list had actually called for a host name (not very likely,
4120 since this list is usually IP addresses). A host name is now passed as
4123 14. Changed the calls that set up the SIGCHLD handler in the daemon to use the
4124 code that specifies a non-restarting handler (typically sigaction() in
4125 modern systems) in an attempt to fix a rare and obscure crash bug.
4127 15. Narrowed the window for a race in the daemon that could cause it to ignore
4128 SIGCHLD signals. This is not a major problem, because they are used only to
4129 wake it up if nothing else does.
4131 16. A malformed maildirsize file could cause Exim to calculate negative values
4132 for the mailbox size or file count. Odd effects could occur as a result.
4133 The maildirsize information is now recalculated if the size or filecount
4136 17. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
4137 support for a long time. Removed HAVE_SYS_VFS_H.
4139 18. Updated exipick to current release from John Jetmore.
4141 19. Allow an empty sender to be matched against a lookup in an address list.
4142 Previously the only cases considered were a regular expression, or an
4145 20. Exim went into a mad DNS lookup loop when doing a callout where the
4146 host was specified on the transport, if the DNS lookup yielded more than
4149 21. The RFC2047 encoding function was originally intended for short strings
4150 such as real names; it was not keeping to the 75-character limit for
4151 encoded words that the RFC imposes. It now respects the limit, and
4152 generates multiple encoded words if necessary. To be on the safe side, I
4153 have increased the buffer size for the ${rfc2047: expansion operator from
4156 22. Failure to deliver a bounce message always caused it to be frozen, even if
4157 there was an errors_to setting on the router. The errors_to setting is now
4160 23. If an IPv6 address is given for -bh or -bhc, it is now converted to the
4161 canonical form (fully expanded) before being placed in
4162 $sender_host_address.
4164 24. Updated eximstats to version 1.33
4166 25. Include certificate and key file names in error message when GnuTLS fails
4167 to set them up, because the GnuTLS error message doesn't include the name
4168 of the failing file when there is a problem reading it.
4170 26. Expand error message when OpenSSL has problems setting up cert/key files.
4173 27. Reset the locale to "C" after calling embedded Perl, in case it was changed
4174 (this can affect the format of dates).
4176 28. exim_tidydb, when checking for the continued existence of a message for
4177 which it has found a message-specific retry record, was not finding
4178 messages that were in split spool directories. Consequently, it was
4179 deleting retry records that should have stayed in existence.
4181 29. eximstats updated to version 1.35
4182 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
4183 1.35 - bugfix such that pie charts by volume are generated correctly
4185 30. The SPA authentication driver was not abandoning authentication and moving
4186 on to the next authenticator when an expansion was forced to fail,
4187 contradicting the general specification for all authenticators. Instead it
4188 was generating a temporary error. It now behaves as specified.
4190 31. The default ordering of permitted cipher suites for GnuTLS was pessimal
4191 (the order specifies the preference for clients). The order is now AES256,
4192 AES128, 3DES, ARCFOUR128.
4194 31. Small patch to Sieve code - explicitly set From: when generating an
4197 32. Exim crashed if a remote delivery caused a very long error message to be
4198 recorded - for instance if somebody sent an entire SpamAssassin report back
4199 as a large number of 550 error lines. This bug was coincidentally fixed by
4200 increasing the size of one of Exim's internal buffers (big_buffer) that
4201 happened as part of the Exiscan merge. However, to be on the safe side, I
4202 have made the code more robust (and fixed the comments that describe what
4205 33. Some experimental protocols are using DNS PTR records for new purposes. The
4206 keys for these records are domain names, not reversed IP addresses. The
4207 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
4208 leaves it alone. Component reversal etc. now happens only for IP addresses.
4211 34. The host_aton() function is supposed to be passed a string that is known
4212 to be a valid IP address. However, in the case of IPv6 addresses, it was
4213 not checking this. This is a hostage to fortune. Exim now panics and dies
4214 if the condition is not met. A case was found where this could be provoked
4215 from a dnsdb PTR lookup with an IPv6 address that had more than 8
4216 components; fortuitously, this particular loophole had already been fixed
4217 by change 4.50/55 or 4.44/33 above.
4219 If there are any other similar loopholes, the new check in host_aton()
4220 itself should stop them being exploited. The report I received stated that
4221 data on the command line could provoke the exploit when Exim was running as
4222 exim, but did not say which command line option was involved. All I could
4223 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
4224 running as the user.
4227 35. There was a buffer overflow vulnerability in the SPA authentication code
4228 (which came originally from the Samba project). I have added a test to the
4229 spa_base64_to_bits() function which I hope fixes it.
4232 36. The daemon start-up calls getloadavg() while still root for those OS that
4233 need the first call to be done as root, but it missed one case: when
4234 deliver_queue_load_max is set with deliver_drop_privilege. This is
4235 necessary for the benefit of the queue runner, because there is no re-exec
4236 when deliver_drop_privilege is set.
4238 37. Caching of lookup data for "hosts =" ACL conditions, when a named host list
4239 was in use, was not putting the data itself into the right store pool;
4240 consequently, it could be overwritten for a subsequent message in the same
4241 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
4244 38. Sometimes the final signoff response after QUIT could fail to get
4245 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
4246 < 0 before doing a fflush(). This bug looks as though it goes back to the
4247 introduction of TLS in release 3.20, but "sometimes" must have been rare
4248 because the tests only now provoked it.
4254 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
4255 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
4256 Now it returns an integer. A number of calls were still expecting a T/F
4257 return. Fortuitously, in all cases, the tests worked in OK situations,
4258 which is the norm. However, things would have gone wrong on any write
4259 failures on the smtp file descriptor. This function is used when sending
4260 messages over SMTP and also when doing verify callouts.
4262 2. When Exim is called to do synchronous delivery of a locally submitted
4263 message (the -odf or -odi options), it no longer closes stderr before doing
4266 3. Implemented the mua_wrapper option.
4268 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
4270 5. Implemented the functions header_remove(), header_testname(),
4271 header_add_at_position(), and receive_remove_recipient(), and exported them
4274 6. If an ACL "warn" statement specified the addition of headers, Exim already
4275 inserted X-ACL-Warn: at the start if there was no header name. However, it
4276 was not making this test for the second and subsequent header lines if
4277 there were newlines in the string. This meant that an invalid header could
4278 be inserted if Exim was badly configured.
4280 7. Allow an ACL "warn" statement to add header lines at the start or after all
4281 the Received: headers, as well as at the end.
4283 8. Added the rcpt_4xx retry error code.
4285 9. Added postmaster_mailfrom=xxx to callout verification option.
4287 10. Added mailfrom=xxxx to the callout verification option, for verify=
4290 11. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
4291 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
4293 12. Inserted some casts to stop certain compilers warning when using pointer
4294 differences as field lengths or precisions in printf-type calls (mostly
4295 affecting debugging statements).
4297 13. Added optional readline() support for -be (dynamically loaded).
4299 14. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
4300 same clock tick as a message's arrival, so that its received time was the
4301 same as the "first fail" time on the retry record, and that message
4302 remained on the queue past the ultimate address timeout, every queue runner
4303 would try a delivery (because it was past the ultimate address timeout) but
4304 after another failure, the ultimate address timeout, which should have then
4305 bounced the address, did not kick in. This was a "< instead of <=" error;
4306 in most cases the first failure would have been in the next clock tick
4307 after the received time, and all would be well.
4309 15. The special items beginning with @ in domain lists (e.g. @mx_any) were not
4310 being recognized when the domain list was tested by the match_domain
4311 condition in an expansion string.
4313 16. Added the ${str2b64: operator.
4315 17. Exim was always calling setrlimit() to set a large limit for the number of
4316 processes, without checking whether the existing limit was already
4317 adequate. (It did check for the limit on file descriptors.) Furthermore,
4318 errors from getrlimit() and setrlimit() were being ignored. Now they are
4319 logged to the main and panic logs, but Exim does carry on, to try to do its
4320 job under whatever limits there are.
4322 18. Imported PCRE 5.0.
4324 19. Trivial typo in log message " temporarily refused connection" (the leading
4327 20. If the log selector return_path_on_delivery was set and an address was
4328 redirected to /dev/null, the delivery process crashed because it assumed
4329 that a return path would always be set for a "successful" delivery. In this
4330 case, the whole delivery is bypassed as an optimization, and therefore no
4333 21. Internal re-arrangement: the function for sending a challenge and reading
4334 a response while authentication was assuming a zero-terminated challenge
4335 string. It's now changed to take a pointer and a length, to allow for
4336 binary data in such strings.
4338 22. Added the cyrus_sasl authenticator (code supplied by MBM).
4340 23. Exim was not respecting finduser_retries when seeking the login of the
4341 uid under which it was called; it was always trying 10 times. (The default
4342 setting of finduser_retries is zero.) Also, it was sleeping after the final
4343 failure, which is pointless.
4345 24. Implemented tls_on_connect_ports.
4347 25. Implemented acl_smtp_predata.
4349 26. If the domain in control=submission is set empty, Exim assumes that the
4350 authenticated id is a complete email address when it generates From: or
4351 Sender: header lines.
4353 27. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
4354 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
4355 chown and chgrp in /bin and hostname in /usr/bin.
4357 28. Exim was keeping the "process log" file open after each use, just as it
4358 does for the main log. This opens the possibility of it remaining open for
4359 long periods when the USR1 signal hits a daemon. Occasional processlog
4360 errors were reported, that could have been caused by this. Anyway, it seems
4361 much more sensible not to leave this file open at all, so that is what now
4364 29. The long-running daemon process does not normally write to the log once it
4365 has entered its main loop, and it closes the log before doing so. This is
4366 so that log files can straightforwardly be renamed and moved. However,
4367 there are a couple of unusual error situations where the daemon does write
4368 log entries, and I had neglected to close the log afterwards.
4370 30. The text of an SMTP error response that was received during a remote
4371 delivery was being truncated at 512 bytes. This is too short for some of
4372 the long messages that one sometimes sees. I've increased the limit to
4375 31. It is now possible to make retry rules that apply only when a message has a
4376 specific sender, in particular, an empty sender.
4378 32. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
4379 it possible to be selective about when SMTP synchronization is enforced.
4381 33. Added "control = caseful_local_part" and "control = "caselower_local_part".
4383 32. Implemented hosts_connection_nolog.
4385 33. Added an ACL for QUIT.
4387 34. Setting "delay_warning=" to disable warnings was not working; it gave a
4390 35. Added mailbox_size and mailbox_filecount to appendfile.
4392 36. Added control = no_multiline_responses to ACLs.
4394 37. There was a bug in the logic of the code that waits for the clock to tick
4395 in the case where the clock went backwards by a substantial amount such
4396 that the microsecond fraction of "now" was more than the microsecond
4397 fraction of "then" (but the whole seconds number was less).
4399 38. Added support for the libradius Radius client library this is found on
4400 FreeBSD (previously only the radiusclient library was supported).
4406 1. When certain lookups returned multiple values in the form name=value, the
4407 quoting of the values was not always being done properly. Specifically:
4408 (a) If the value started with a double quote, but contained no whitespace,
4410 (b) If the value contained whitespace other than a space character (i.e.
4411 tabs or newlines or carriage returns) it was not quoted.
4412 This fix has been applied to the mysql and pgsql lookups by writing a
4413 separate quoting function and calling it from the lookup code. The fix
4414 should probably also be applied to nisplus, ibase and oracle lookups, but
4415 since I cannot test any of those, I have not disturbed their existing code.
4417 2. A hit in the callout cache for a specific address caused a log line with no
4418 reason for rejecting RCPT. Now it says "Previous (cached) callout
4419 verification failure".
4421 3. There was an off-by-one bug in the queryprogram router. An over-long
4422 return line was truncated at 256 instead of 255 characters, thereby
4423 overflowing its buffer with the terminating zero. As well as fixing this, I
4424 have increased the buffer size to 1024 (and made a note to document this).
4426 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
4427 when Exim is waiting for an SMTP response from a remote server, Exim
4428 restarts its select() call on the socket, thereby resetting its timeout.
4429 This is not a problem when such interrupts are rare. Somebody set up a cron
4430 job to run exiwhat every 2 minutes, which is less than the normal select()
4431 timeout (5 or 10 minutes). This meant that the select() timeout never
4432 kicked in because it was always reset. I have fixed this by comparing the
4433 time when an interrupt arrives with the time at the start of the first call
4434 to select(). If more time than the timeout has elapsed, the interrupt is
4435 treated as a timeout.
4437 5. Some internal re-factoring in preparation for the addition of Sieve
4438 extensions (by MH). In particular, the "personal" test is moved to a
4439 separate function, and given an option for scanning Cc: and Bcc: (which is
4440 not set for Exim filters).
4442 6. When Exim created an email address using the login of the caller as the
4443 local part (e.g. when creating a From: or Sender: header line), it was not
4444 quoting the local part when it contained special characters such as @.
4446 7. Installed new OpenBSD configuration files.
4448 8. Reworded some messages for syntax errors in "and" and "or" conditions to
4449 try to make them clearer.
4451 9. Callout options, other than the timeout value, were being ignored when
4452 verifying sender addresses in header lines. For example, when using
4454 verify = header_sender/callout=no_cache
4456 the cache was (incorrectly) being used.
4458 10. Added a missing instance of ${EXE} to the exim_install script; this affects
4459 only the Cygwin environment.
4461 11. When return_path_on_delivery was set as a log selector, if different remote
4462 addresses in the same message used different return paths and parallel
4463 remote delivery occurred, the wrong values would sometimes be logged.
4464 (Whenever a remote delivery process finished, the return path value from
4465 the most recently started remote delivery process was logged.)
4467 12. RFC 3848 specifies standard names for the "with" phrase in Received: header
4468 lines when AUTH and/or TLS are in use. This is the "received protocol"
4469 field. Exim used to use "asmtp" for authenticated SMTP, without any
4470 indication (in the protocol name) for TLS use. Now it follows the RFC and
4471 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
4472 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
4473 names appear in log lines as well as in Received: header lines.
4475 13. Installed MH's patches for Sieve to add the "copy" and "vacation"
4476 extensions, and comparison tests, and to fix some bugs.
4478 14. Changes to the "personal" filter test:
4480 (1) The test was buggy in that it was just doing the equivalent of
4481 "contains" tests on header lines. For example, if a user's address was
4482 anne@some.where, the "personal" test would incorrectly be true for
4484 To: susanne@some.where
4486 This test is now done by extracting each address from the header in turn,
4487 and checking the entire address. Other tests that are part of "personal"
4488 are now done using regular expressions (for example, to check local parts
4489 of addresses in From: header lines).
4491 (2) The list of non-personal local parts in From: addresses has been
4492 extended to include "listserv", "majordomo", "*-request", and "owner-*",
4493 taken from the Sieve specification recommendations.
4495 (3) If the message contains any header line starting with "List-" it is
4496 treated as non-personal.
4498 (4) The test for "circular" in the Subject: header line has been removed
4499 because it now seems ill-conceived.
4501 15. Minor typos in src/EDITME comments corrected.
4503 16. Installed latest exipick from John Jetmore.
4505 17. If headers_add on a router specified a text string that was too long for
4506 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
4507 of string_sprintf() is now avoided.
4509 18. $message_body_size was not set (it was always zero) when running the DATA
4510 ACL and the local_scan() function.
4512 19. For the "mail" command in an Exim filter, no default was being set for
4513 the once_repeat time, causing a random time value to be used if "once" was
4514 specified. (If the value happened to be <= 0, no repeat happened.) The
4515 default is now 0s, meaning "never repeat". The "vacation" command was OK
4516 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
4517 (I found it when inspecting the code).
4519 20. There is now an overall timeout for performing a callout verification. It
4520 defaults to 4 times the callout timeout, which applies to individual SMTP
4521 commands during the callout. The overall timeout applies when there is more
4522 than one host that can be tried. The timeout is checked before trying the
4523 next host. This prevents very long delays if there are a large number of
4524 hosts and all are timing out (e.g. when the network connections are timing
4525 out). The value of the overall timeout can be changed by specifying an
4526 additional sub-option for "callout", called "maxwait". For example:
4528 verify = sender/callout=5s,maxwait=20s
4530 21. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
4531 to the end before writing, but this should make it even safer).
4533 22. Exim was forgetting that it had advertised PIPELINING for the second and
4534 subsequent messages on an SMTP connection. It was also not resetting its
4535 memory on STARTTLS and an internal HELO.
4537 23. When Exim logs an SMTP synchronization error within a session, it now
4538 records whether PIPELINING has been advertised or not.
4540 24. Added 3 instances of "(long int)" casts to time_t variables that were being
4541 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
4542 rather than long int.
4544 25. Installed the latest Cygwin configuration files from the Cygwin maintainer.
4546 26. Added the never_mail option to autoreply.
4552 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
4553 crash if the getsockname() call failed; this can happen if a connection is
4554 closed very soon after it is established. The problem was simply in the
4555 order in which certain operations were done, causing Exim to try to write
4556 to the SMTP stream before it had set up the file descriptor. The bug has
4557 been fixed by making things happen in the correct order.
4563 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
4564 before the connection was closed, thus losing the rejection response.
4566 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
4567 some early Solaris releases, but causes trouble in current releases where
4568 socklen_t is defined.
4570 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
4573 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
4576 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
4577 that releasing the top of it at the end releases what was used for sub-
4578 expansions (unless the block got too big). However, discard this block if
4579 the first thing is a variable or header, so that we can use its block when
4580 it is dynamic (useful for very large $message_headers, for example).
4582 6. Lookups now cache *every* query, not just the most recent. A new, separate
4583 store pool is used for this. It can be recovered when all lookup caches are
4584 flushed. Lookups now release memory at the end of their result strings.
4585 This has involved some general refactoring of the lookup sources.
4587 7. Some code has been added to the store_xxx() functions to reduce the amount
4588 of flapping under certain conditions.
4590 8. log_incoming_interface used to affect only the <= reception log lines. Now
4591 it causes the local interface and port to be added to several more SMTP log
4592 lines, for example "SMTP connection from", and rejection lines.
4594 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
4596 10. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
4598 11. If $host_data was set by virtue of a hosts lookup in an ACL, its value
4599 could be overwritten at the end of the current message (or the start of a
4600 new message if it was set in a HELO ACL). The value is now preserved for
4601 the duration of the SMTP connection.
4603 12. If a transport had a headers_rewrite setting, and a matching header line
4604 contained an unqualified address, that address was qualified, even if it
4605 did not match any rewriting rules. The underlying bug was that the values
4606 of the flags that permit the existence of unqualified sender and recipient
4607 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
4608 non-local messages, and by -bnq for local messages) were not being
4609 preserved with the message after it was received.
4611 13. When Exim was logging an SMTP synchronization error, it could sometimes log
4612 "next input=" as part of the text comprising the host identity instead of
4613 the correct text. The code was using the same buffer for two different
4614 strings. However, depending on which order the printing function evaluated
4615 its arguments, the bug did not always show up. Under Linux, for example, my
4616 test suite worked just fine.
4618 14. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
4619 doesn't work with some older versions of Perl. It has been changed to "my",
4620 which in any case is probably the better facility to use.
4622 15. A really picky compiler found some instances of statements for creating
4623 error messages that either had too many or two few arguments for the format
4626 16. The size of the buffer for calls to the DNS resolver has been increased
4627 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
4628 for addresses that have a lot of PTR records. This alleviates a problem; it
4629 does not fully solve it.
4631 17. A dnsdb lookup for PTR records that receives more data than will fit in the
4632 buffer now truncates the list and logs the incident, which is the same
4633 action as happens when Exim is looking up a host name and its aliases.
4634 Previously in this situation something unpredictable would happen;
4635 sometimes it was "internal error: store_reset failed".
4637 18. If a server dropped the connection unexpectedly when an Exim client was
4638 using GnuTLS and trying to read a response, the client delivery process
4639 crashed while trying to generate an error log message.
4641 19. If a "warn" verb in an ACL added multiple headers to a message in a single
4642 string, for example:
4644 warn message = H1: something\nH2: something
4646 the text was added as a single header line from Exim's point of view
4647 though it ended up OK in the delivered message. However, searching for the
4648 second and subsequent header lines using $h_h2: did not work. This has been
4649 fixed. Similarly, if a system filter added multiple headers in this way,
4650 the routers could not see them.
4652 20. Expanded the error message when iplsearch is called with an invalid key to
4653 suggest using net-iplsearch in a host list.
4655 21. When running tests using -bh, any delays imposed by "delay" modifiers in
4656 ACLs are no longer actually imposed (and a message to that effect is
4659 22. If a "gecos" field in a passwd entry contained escaped characters, in
4660 particular, if it contained a \" sequence, Exim got it wrong when building
4661 a From: or a Sender: header from that name. A second bug also caused
4662 incorrect handling when an unquoted " was present following a character
4663 that needed quoting.
4665 23. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
4666 was not being matched caselessly.
4668 24. Arranged for all hyphens in the exim.8 source to be escaped with
4671 25. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
4672 properly. Recipient callout cache records were still being keyed to include
4673 the sender, even when use_sender was set false. This led to far more
4674 callouts that were necessary. The sender is no longer included in the key
4675 when use_sender is false.
4677 26. Added "control = submission" modifier to ACLs.
4679 27. Added the ${base62d: operator to decode base 62 numbers.
4681 28. dnsdb lookups can now access SRV records.
4683 29. CONFIGURE_OWNER can be set at build time to define an alternative owner for
4684 the configuration file.
4686 30. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
4687 (-v) mode. This makes the output for a verbose queue run more intelligible.
4689 31. Added a use_postmaster feature to recipient callouts.
4691 32. Added the $body_zerocount variable, containing the number of binary zero
4692 bytes in the message body.
4694 33. The time of last modification of the "new" subdirectory is now used as the
4695 "mailbox time last read" when there is a quota error for a maildir
4698 34. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
4700 35. Added +ignore_unknown as a special item in host lists.
4702 36. Code for decoding IPv6 addresses in host lists is now included, even if
4703 IPv6 support is not being compiled. This fixes a bug in which an IPv6
4704 address was recognized as an IP address, but was then not correctly decoded
4705 into binary, causing unexpected and incorrect effects when compared with
4712 1. Very minor rewording of debugging text in manualroute to say "list of
4713 hosts" instead of "hostlist".
4715 2. If verify=header_syntax was set, and a header line with an unqualified
4716 address (no domain) and a large number of spaces between the end of the
4717 name and the colon was received, the reception process suffered a buffer
4718 overflow, and (when I tested it) crashed. This was caused by some obsolete
4719 code that should have been removed. The fix is to remove it!
4721 3. When running in the test harness, delay a bit after writing a bounce
4722 message to get a bit more predictability in the log output.
4724 4. Added a call to search_tidyup() just before forking a reception process. In
4725 theory, someone could use a lookup in the expansion of smtp_accept_max_
4726 per_host which, without the tidyup, could leave open a database connection.
4728 5. Added the variables $recipient_data and $sender_data which get set from a
4729 lookup success in an ACL "recipients" or "senders" condition, or a router
4730 "senders" option, similar to $domain_data and $local_part_data.
4732 6. Moved the writing of debug_print from before to after the "senders" test
4735 7. Change 4.31/66 (moving the time when the Received: is generated) caused
4736 problems for message scanning, either using a data ACL, or using
4737 local_scan() because the Received: header was not generated till after they
4738 were called (in order to set the time as the time of reception completion).
4739 I have revised the way this works. The header is now generated after the
4740 body is received, but before the ACL or local_scan() are called. After they
4741 are run, the timestamp in the header is updated.
4747 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
4748 before starting a queue runner without re-exec. This happened only when
4749 deliver_drop_privilege was set or when the Exim user was set to root. The
4750 effect of the bug was that timeouts during subsequent deliveries caused
4751 crashes instead of being properly handled. The handler is now left at its
4752 default (and expected) setting.
4754 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
4755 message, again when deliver_drop_privilege is set or Exim is run as root.
4756 The bug described in (1) was not present in this case, but the tidying up
4757 of the other signals was missing. I have made the two cases consistent.
4759 3. The ignore_target_hosts setting on a manualroute router was being ignored
4760 for hosts that were looked up using the /MX notation.
4762 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
4765 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
4766 operated on the sender address. After changing the $sender_address to <>
4767 for the sender address verify, Exim was re-instated it as the original
4768 (before rewriting) address, but remembering that it had rewritten it, so it
4769 wasn't rewriting it again. This bug also had the effect of breaking the
4770 sender address verification caching when the sender address was rewritten.
4772 6. The ignore_target_hosts option was being ignored by the ipliteral router.
4773 This has been changed so that if the ip literal address matches
4774 ignore_target_hosts, the router declines.
4776 7. Added expansion conditions match_domain, match_address, and match_local_
4777 part (NOT match_host).
4779 8. The placeholder for the Received: header didn't have a length field set.
4781 9. Added code to Exim itself and to exim_lock to test for a specific race
4782 condition that could lead to file corruption when using MBX delivery. The
4783 issue is with the lockfile that is created in /tmp. If this file is removed
4784 after a process has opened it but before that process has acquired a lock,
4785 there is the potential for a second process to recreate the file and also
4786 acquire a lock. This could lead to two Exim processes writing to the file
4787 at the same time. The added code performs the same test as UW imapd; it
4788 checks after acquiring the lock that its file descriptor still refers to
4789 the same named file.
4791 10. The buffer for building added header lines was of fixed size, 8192 bytes.
4792 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
4795 11. Added the smtp_active_hostname option. If used, this will typically be made
4796 to depend on the incoming interface address. Because $interface_address is
4797 not set up until the daemon has forked a reception process, error responses
4798 that can happen earlier (such as "too many connections") no longer contain
4801 12. If an expansion in a condition on a "warn" statement fails because a lookup
4802 defers, the "warn" statement is abandoned, and the next ACL statement is
4803 processed. Previously this caused the whole ACL to be aborted.
4805 13. Added the iplsearch lookup type.
4807 14. Added ident_timeout as a log selector.
4809 15. Added tls_certificate_verified as a log selector.
4811 16. Added a global option tls_require_ciphers (compare the smtp transport
4812 option of the same name). This controls incoming TLS connections.
4814 17. I finally figured out how to make tls_require_ciphers do a similar thing
4815 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
4816 before starting the TLS session.
4818 18. Tabs are now shown as \t in -bP output.
4820 19. If the log selector return_path_on_delivery was set, Exim crashed when
4821 bouncing a message because it had too many Received: header lines.
4823 20. If two routers both had headers_remove settings, and the first one included
4824 a superfluous trailing colon, the final name in the first list and the
4825 first name in the second list were incorrectly joined into one item (with a
4826 colon in the middle).
4832 1. Added -C and -D options to the exinext utility, mainly to make it easier
4833 to include in the automated testing, but these could be helpful when
4834 multiple configurations are in use.
4836 2. The exinext utility was not formatting the output nicely when there was
4837 an alternate port involved in the retry record key, nor when there was a
4838 message id as well (for retries that were specific to a specific message
4839 and a specific host). It was also confused by IPv6 addresses, because of
4840 the additional colons they contain. I have fixed the IPv4 problem, and
4841 patched it up to do a reasonable job for IPv6.
4843 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
4844 delivery, the log line now contains "pipelined" if PIPELINING was used.
4846 4. An SMTP transport process used to panic and die if the bind() call to set
4847 an explicit outgoing interface failed. This has been changed; it is now
4848 treated in the same way as a connect() failure.
4850 5. A reference to $sender_host_name in the part of a conditional expansion
4851 that was being skipped was still causing a DNS lookup. This no longer
4854 6. The def: expansion condition was not recognizing references to header lines
4855 that used bh_ and bheader_.
4857 7. Added the _cache feature to named lists.
4859 8. The code for checking quota_filecount in the appendfile transport was
4860 allowing one more file than it should have been.
4862 9. For compatibility with Sendmail, the command line option
4870 and sets the incoming protocol and host name (for trusted callers). The
4871 host name and its colon can be omitted when only the protocol is to be set.
4872 Note the Exim already has two private options, -pd and -ps, that refer to
4873 embedded Perl. It is therefore impossible to set a protocol value of "d" or
4874 "s", but I don't think that's a major issue.
4876 10. A number of refactoring changes to the code, none of which should affect
4879 (a) The number of logging options was getting close to filling up the
4880 32-bit word that was used as a bit map. I have split them into two classes:
4881 those that are passed in the argument to log_write(), and those that are
4882 only ever tested independently outside of that function. These are now in
4883 separate 32-bit words, so there is plenty of room for expansion again.
4884 There is no change in the user interface or the logging behaviour.
4886 (b) When building, for example, log lines, the code previously used a
4887 macro that called string_cat() twice, in order to add two strings. This is
4888 not really sufficiently general. Furthermore, there was one instance where
4889 it was actually wrong because one of the argument was used twice, and in
4890 one call a function was used. (As it happened, calling the function twice
4891 did not affect the overall behaviour.) The macro has been replaced by a
4892 function that can join an arbitrary number of extra strings onto a growing
4895 (c) The code for expansion conditions now uses a table and a binary chop
4896 instead of a serial search (which was left over from when there were very
4897 few conditions). Also, it now recognizes conditions like "pam" even when
4898 the relevant support is not compiled in: a suitably worded error message is
4899 given if an attempt is made to use such a condition.
4901 11. Added ${time_interval:xxxxx}.
4903 12. A bug was causing one of the ddress fields not to be passed back correctly
4904 from remote delivery subprocesses. The field in question was not being
4905 subsequently used, so this caused to problems in practice.
4907 13. Added new log selectors queue_time and deliver_time.
4909 14. Might have fixed a bug in maildirsizefile handling that threw up
4910 "unexpected character" debug warnings, and recalculated the data
4911 unnecessarily. In any case, I expanded the warning message to give more
4914 15. Added the message "Restricted characters in address" to the statements in
4915 the default ACL that block characters like @ and % in local parts.
4917 16. Change 71 for release 4.31 proved to be much less benign that I imagined.
4918 Three changes have been made:
4920 (a) There was a serious bug; a negative response to MAIL caused the whole
4921 recipient domain to be cached as invalid, thereby blocking all messages
4922 to all local parts at the same domain, from all senders. This bug has
4923 been fixed. The domain is no longer cached after a negative response to
4924 MAIL if the sender used is not empty.
4926 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
4929 (c) A new callout option, "use_sender" has been added for people who want
4930 the modified behaviour.
4936 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
4939 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
4940 indeed breaks things for older releases.
4942 3. Added additional logging to the case where there is a problem reading data
4943 from a filter that is running in a subprocess using a pipe, in order to
4944 try to track down a specific problem.
4946 4. Testing facility fudge: when running in the test harness and attempting
4947 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
4948 getting "No route to host". Convert this to a timeout.
4950 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
4953 6. Some OS don't have socklen_t but use size_t instead. This affects the
4954 fifth argument of getsockopt() amongst other things. This is now
4955 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
4956 can be set for individual OS. I have set it for SunOS5, OSF1, and
4957 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
4958 some earlier ones do not.
4960 7. Change 4.30/15 was not doing the test caselessly.
4962 8. The standard form for an IPv6 address literal was being rejected by address
4963 parsing in, for example, MAIL and RCPT commands. An example of this kind of
4964 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
4965 this, as well as the form without the "IPv6" on the front (but only when
4966 address literals are enabled, of course).
4968 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
4970 10. Exim crashed if a message with an empty sender address specified by -f
4971 encountered a router with an errors_to setting. This could be provoked only
4972 by a command such as
4976 where an empty string was supplied; "<>" did not hit this bug.
4978 11. Installed PCRE release 4.5.
4980 12. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
4981 remained set. It is now erased.
4983 13. exiqgrep wasn't working on MacOS X because it didn't correctly compute
4984 times from message ids (which are base 36 rather than the normal 62).
4986 14. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
4987 were being counted as actual protocol errors, and logged if the log
4988 selector +smtp_protocol_error was set. One cannot be perfect in this test,
4989 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
4990 and DATA following a set of rejected RCPTs do not count as protocol errors.
4991 In other words, Exim assumes they were pipelined, though this may not
4992 actually be the case. Of course, in all cases the client gets an
4993 appropriate error code.
4995 15. If a lookup fails in an ACL condition, a message about the failure may
4996 be available; it is used if testing the ACL cannot continue, because most
4997 such messages specify what the cause of the deferral is. However, some
4998 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
4999 that caused an old message to be retained and used if a later statement
5000 caused a defer, replacing the real cause of the deferral.
5002 16. If an IP address had so many PTR records that the DNS lookup buffer
5003 was not large enough to hold them, Exim could crash while trying to process
5004 the truncated data. It now detects and logs this case.
5006 17. Further to 4.21/58, another change has been made: if (and only if) the
5007 first line of a message (the first header line) ends with CRLF, a bare LF
5008 in a subsequent header line has a space inserted after it, so as not to
5009 terminate the header.
5011 18. Refactoring: tidied an ugly bit of code in appendfile that copied data
5012 unnecessarily, used atoi() instead of strtol(), and didn't check the
5013 termination when getting file sizes from file names by regex.
5015 19. Completely re-implemented the support for maildirsize files, in the light
5016 of a number of problems with the previous contributed implementation
5017 (4.30/29). In particular:
5019 . If the quota is zero, the maildirsize file is maintained, but no quota is
5022 . If the maildir directory does not exist, it is created before any attempt
5023 to write a maildirsize file.
5025 . The quota value in the file is just a cache; if the quota is changed in
5026 the transport, the new value overrides.
5028 . A regular expression is available for excluding directories from the
5031 20. The autoreply transport checks the characters in options that define the
5032 message's headers; it allows continued headers, but it was checking with
5033 isspace() after an embedded newline instead of explicitly looking for a
5036 21. If all the "regular" hosts to which an address was routed had passed their
5037 expiry times, and had not reached their retry times, the address was
5038 bounced, even if fallback hosts were defined. Now Exim should go on to try
5041 22. Increased buffer sizes in the callout code from 1024 to 4096 to match the
5042 equivalent code in the SMTP transport. Some hosts send humungous responses
5043 to HELO/EHLO, more than 1024 it seems.
5045 23. Refactoring: code in filter.c used (void *) for "any old type" but this
5046 gives compiler warnings in some environments. I've now done it "properly",
5049 24. The replacement for inet_ntoa() that is used with gcc on IRIX systems
5050 (because of problems with the built-in one) was declared to return uschar *
5051 instead of char *, causing compiler failure.
5053 25. Fixed a file descriptor leak when processing alias/forward files.
5055 26. Fixed a minor format string issue in dbfn.c.
5057 27. Typo in exim.c: ("dmbnz" for "dbmnz").
5059 28. If a filter file refered to $h_xxx or $message_headers, and the headers
5060 contained RFC 2047 "words", Exim's memory could, under certain conditions,
5063 29. When a sender address is verified, it is cached, to save repeating the test
5064 when there is more than one recipient in a message. However, when the
5065 verification involves a callout, it is possible for different callout
5066 options to be set for different recipients. It is too complicated to keep
5067 track of this in the cache, so now Exim always runs a verification when a
5068 callout is required, relying on the callout cache for the optimization.
5069 The overhead is duplication of the address routing, but this should not be
5072 30. Fixed a bug in callout caching. If a RCPT command caused the sender address
5073 to be verified with callout=postmaster, and the main callout worked but the
5074 postmaster check failed, the verification correctly failed. However, if a
5075 subsequent RCPT command asked for sender verification *without* the
5076 postmaster check, incorrect caching caused this verification also to fail,
5079 31. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
5080 it was not caching the DNS options (qualify_single, search_parents) that
5081 were used when the lookup failed. A subsequent lookup with different
5082 options therefore always gave the same answer, though there were cases
5083 where it should not have. (Example: a "domains = !$mx_any" option on a
5084 dnslookup router: the "domains" option is always processed without any
5085 widening, but the router might have qualify_single set.) Now Exim uses the
5086 cached value only when the same options are set.
5088 32. Added John Jetmore's "exipick" utility to the distribution.
5090 33. GnuTLS: When an attempt to start a TLS session fails for any reason other
5091 than a timeout (e.g. a certificate is required, and is not provided), an
5092 Exim server now closes the connection immediately. Previously it waited for
5093 the client to close - but if the client is SSL, it seems that they each
5094 wait for each other, leading to a delay before one of them times out.
5096 34: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
5097 maintained 0.8.x compatibility because I don't think many are using it, and
5098 it is clearly obsolete.
5100 35. Added TLS support for CRLs: a tls_crl global option and one for the smtp
5103 36. OpenSSL: $tls_certificate_verified was being set to 1 even if the
5104 client certificate was expired. A simple patch fixes this, though I don't
5105 understand the full logic of why the verify callback is called multiple
5108 37. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
5109 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
5110 which causes problems with some clients (such as the Certicom SSL Plus
5111 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
5112 disables the coutermeasure allowing Eudora to connect."
5114 38. Exim was not checking that a write() to a log file succeeded. This could
5115 lead to Bad Things if a log got too big, in particular if it hit a file
5116 size limit. Exim now panics and dies if it cannot write to a log file, just
5117 as it does if it cannot open a log file.
5119 39. Modified OS/Makefile-Linux so that it now contains
5121 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
5123 The two -D definitions ensure that Exim is compiled with large file
5124 support, which makes it possible to handle log files that are bigger than
5127 40. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
5128 instance) a domain was checked against a named list that involved a lookup,
5129 causing $domain_data to be set, then another domain was checked against the
5130 same list, then the first domain was re-checked, the value of $domain_data
5131 after the final check could be wrong. In particular, if the second check
5132 failed, it could be set empty. This bug probably also applied to
5135 41. The strip_trailing_dot option was not being applied to the address given
5136 with the -f command-line option.
5138 42. The code for reading a message's header from the spool was incrementing
5139 $received_count, but never initializing it. This meant that the value was
5140 incorrect (doubled) while delivering a message in the same process in which
5141 it was received. In the most common configuration of Exim, this never
5142 happens - a fresh exec is done - but it can happen when
5143 deliver_drop_privilege is set.
5145 43. When Exim logs an SMTP synchronization error - client data sent too soon -
5146 it now includes up to 150 characters of the unexpected data in the log
5149 44. The exim_dbmbuild utility uses fixed size buffers for reading input lines
5150 and building data strings. The size of both of these buffers was 10 000
5151 bytes - far larger than anybody would *ever* want, thought I. Needless to
5152 say, somebody hit the limit. I have increased the maximum line length to
5153 20 000 and the maximum data length of concatenated lines to 100 000. I have
5154 also fixed two bugs, because there was no checking on these buffers. Tsk,
5155 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
5156 buffer is too small.
5158 45. The exim_dbmbuild utility did not support quoted keys, as Exim does in
5159 lsearch lookups. Now it does.
5161 46. When parsing a route_list item in a manualroute router, a fixed-length
5162 buffer was used for the list of hosts. I made this 1024 bytes long,
5163 thinking that nobody would ever have a list of hosts that long. Wrong.
5164 Somebody had a whole pile of complicated expansion conditions, and the
5165 string was silently truncated, leading to an expansion error. It turns out
5166 that it is easier to change to an unlimited length (owing to other changes
5167 that have happened since this code was originally written) than to build
5168 structure for giving a limitation error. The length of the item that
5169 expands into the list of hosts is now unlimited.
5171 47. The lsearch lookup could not handle data where the length of text line was
5172 more than 4095 characters. Such lines were truncated, leading to shortened
5173 data being returned. It should now handle lines of any length.
5175 48. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
5176 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
5179 49. Cosmetic tidy to scripts like exicyclog that are generated by globally
5180 replacing strings such as BIN_DIRECTORY in a source file: the replacement
5181 no longer happens in comment lines. A list of replacements is now placed
5182 at the head of all of the source files, except those whose only change is
5183 to replace PERL_COMMAND in the very first #! line.
5185 50. Replaced the slow insertion sort in queue.c, for sorting the list of
5186 messages on the queue, with a bottom-up merge sort, using code contributed
5187 by Michael Haardt. This should make operations like -bp somewhat faster on
5188 large queues. It won't affect queue runners, except when queue_run_in_order
5191 51. Installed eximstats 1.31 in the distribution.
5193 52. Added support for SRV lookups to the dnslookup router.
5195 53. If an ACL referred to $message_body or $message_body_end, the value was not
5196 reset for any messages that followed in the same SMTP session.
5198 54. The store-handling optimization for building very long strings was not
5199 differentiating between the different store pools. I don't think this
5200 actually made any difference in practice, but I've tidied it.
5202 55. While running the routers to verify a sender address, $sender_address
5203 was still set to the sender address. This is wrong, because when routing to
5204 send a bounce to the sender, it would be empty. Therefore, I have changed
5205 it so that, while verifying a sender address, $sender_address is set to <>.
5206 (There is no change to what happens when verifying a recipient address.)
5208 56. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
5209 target A or AAAA records (if not already returned) without resetting the
5210 qualify_single or search_parents options of the DNS resolver. These are
5211 inappropriate in this case because the targets of MX and SRV records must
5212 be FQDNs. A broken DNS record could cause trouble if it happened to have a
5213 target that, when qualified, matched something in the local domain. These
5214 two options are now turned off when doing these lookups.
5216 57. It seems that at least some releases of Reiserfs (which does not have the
5217 concept of a fixed number of inodes) returns zero and not -1 for the
5218 number of available inodes. This interacted badly with check_spool_inodes,
5219 which assumed that -1 was the "no such thing" setting. What I have done is
5220 to check that the total number of inodes is greater than zero before doing
5221 the test of how many are available.
5223 58. When a "warn" ACL statement has a log_message modifier, the message is
5224 remembered, and not repeated. This is to avoid a lot of repetition when a
5225 message has many recipients that cause the same warning to be written.
5226 Howewer, Exim was preserving the list of already written lines for an
5227 entire SMTP session, which doesn't seem right. The memory is now reset if a
5228 new message is started.
5230 59. The "rewrite" debugging flag was not showing the result of rewriting in the
5231 debugging output unless log_rewrite was also set.
5233 60. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
5234 of (int)(handle) when we know that handle contains (void *)(-1).
5236 61. The Exim daemon panic-logs an error return when it closes the incoming
5237 connection. However "connection reset by peer" seems to be common, and
5238 isn't really an error worthy of noting specially, so that particular error
5241 62. When Exim is trying to find all the local interfaces, it used to panic and
5242 die if the ioctl to get the interface flags failed. However, it seems that
5243 on at least one OS (Solaris 9) it is possible to have an interface that is
5244 included in the list of interfaces, but for which you get a failure error
5245 for this call. This happens when the interface is not "plumbed" into a
5246 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
5247 failure of the "get flags" call assumes that the interface is down.
5249 63. Added a ${eval10: operator, which assumes all numbers are decimal. This
5250 makes life easier for people who are doing arithmetic on fields extracted
5251 from dates, where you often get leading zeros that should not be
5252 interpreted as octal.
5254 64. Added qualify_domain to the redirect router, to override the global
5257 65. If a pathologically long header line contained very many addresses (the
5258 report of this problem mentioned 10 000) and each of them was rewritten,
5259 Exim could use up a very large amount of memory. (It kept on making new
5260 copies of the header line as it rewrote, and never released the old ones.)
5261 At the expense of a bit more processing, the header rewriting function has
5262 been changed so that it no longer eats memory in this way.
5264 66. The generation of the Received: header has been moved from the time that a
5265 message starts to be received, to the time that it finishes. The timestamp
5266 in the Received: header should now be very close to that of the <= log
5267 line. There are two side-effects of this change:
5269 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
5270 logged header lines no longer include the local Received: line, because
5271 it has not yet been created. The same applies to a copy of the message
5272 that is returned to a non-SMTP sender when a message is rejected.
5274 (b) When a filter file is tested using -bf, no additional Received: header
5275 is added to the test message. After some thought, I decided that this
5278 This change does not affect the value of $received_for. It is still set
5279 after address rewriting, but before local_scan() is called.
5281 67. Installed the latest Cygwin-specific files from the Cygwin maintainer.
5283 68. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
5284 gave an unhelpful panic error message, and a defer error. I have managed to
5285 change this behaviour so that it now rejects any supplied certificate,
5286 which seems right, as the list of acceptable certificates is empty.
5288 69. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
5289 gave an unhelpful defer error. I have not managed to make this reject any
5290 supplied certificates, but the error message it gives is "no certificate
5291 supplied", which is not helpful.
5293 70. exigrep's output now also includes lines that are not associated with any
5294 message, but which match the given pattern. Implemented by a patch from
5295 Martin Sluka, which also tidied up the Perl a bit.
5297 71. Recipient callout verification, like sender verification, was using <> in
5298 the MAIL FROM command. This isn't really the right thing, since the actual
5299 sender may affect whether the remote host accepts the recipient or not. I
5300 have changed it to use the actual sender in the callout; this means that
5301 the cache record is now keyed on a recipient/sender pair, not just the
5302 recipient address. There doesn't seem to be a real danger of callout loops,
5303 since a callout by the remote host to check the sender would use <>.
5304 [SEE ABOVE: changed after hitting problems.]
5306 72. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
5307 temporary errors. However, in the case of such a code being given after
5308 the end of a data transmission (i.e. after ".") Exim was failing to write
5309 a retry record for the message. (Yes, there was some broken host that was
5310 actually sending 8xx at this point.)
5312 73. An unknown lookup type in a host list could cause Exim to panic-die when
5313 the list was checked. (An example that provoked this was putting <; in the
5314 middle of a list instead of at the start.) If this happened during a DATA
5315 ACL check, a -D file could be left lying around. This kind of configuration
5316 error no longer causes Exim to die; instead it causes a defer errror. The
5317 incident is still logged to the main and panic logs.
5319 74. Buglet left over from Exim 3 conversion. The message "too many messages
5320 in one connection" was written to the rejectlog but not the mainlog, except
5321 when address rewriting (yes!) was being logged.
5323 75. Added write_rejectlog option.
5325 76. When a system filter was run not as root (that is, when system_filter_user
5326 was set), the values of the $n variables were not being returned to the
5327 main process; thus, they were not subsequently available in the $sn
5330 77. Added +return_path_on_delivery log selector.
5332 78. A connection timeout was being treated differently from recipients deferred
5333 when testing hosts_max_try with a message that was older than the host's
5334 retry timeout. (The host should not be counted, thus allowing all hosts to
5335 be tried at least once before bouncing.) This may have been the cause of an
5336 occasionally reported bug whereby a message would remain on the queue
5337 longer than the retry timeout, but would be bounced if a delivery was
5338 forced. I say "may" because I never totally pinned down the problem;
5339 setting up timeout/retry tests is difficult. See also the next item.
5341 79. The ultimate address timeout was not being applied to errors that involved
5342 a combination of host plus message (for example, a timeout on a MAIL
5343 command). When an address resolved to a number of possible hosts, and they
5344 were not all tried for each delivery (e.g. because of hosts_max_try), a
5345 message could remain on the queue longer than the retry timeout.
5347 80. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
5350 81. Fixed an obscure SMTP outgoing bug which required at least the following
5351 conditions: (a) there was another message waiting for the same server;
5352 (b) the server returned 5xx to all RCPT commands in the first message so
5353 that the message was not completed; (c) the server dropped the connection
5354 or gave a negative response to the RSET that Exim sends to abort the
5355 transaction. The observed case was a dropped connection after DATA that had
5356 been sent in pipelining mode. That is, the server had advertised PIPELINING
5357 but was not implementing it correctly. The effect of the bug was incorrect
5358 behaviour, such as trying another host, and this could lead to a crash.
5364 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
5365 and daemon.c were passed as pointers to ints; they should have been
5366 pointers to socklen_t variables (which are typically unsigned ints).
5368 2. Some signed/unsigned type warnings in the os.c file for Linux have been
5371 3. Fixed a really odd bug that affected only the testing scheme; patching a
5372 certain fixed string in the binary changed the value of another string that
5373 happened to be identical to the end of the original first string.
5375 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
5376 name", it returns that address as the IP address. On some operating
5377 systems (e.g. Solaris), it also passes back the IP address string as the
5378 "host name". However, on others (e.g. Linux), it passes back an empty
5379 string. Exim wasn't checking for this, and was changing the host name to an
5380 empty string, assuming it had been canonicized.
5382 5. Although rare, it is permitted to have more than one PTR record for a given
5383 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
5384 all the names associated with an address, because they do in Solaris.
5385 However, it seems that they do not in Linux for data that comes from the
5386 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
5387 I found this out when I moved to a new Linux workstation and tried to run
5388 the Exim test suite.
5390 To get round this problem I have changed the code so that it now does its
5391 own call to the DNS to look up PTR records when searching for a host name.
5392 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
5393 addresses that are only in /etc/hosts are still found.
5395 This behaviour is, however, controlled by an option called host_lookup_
5396 order, which defaults to "bydns:byaddr". If people want to use the other
5397 order, or indeed, just use one or the other means of lookup, they can
5398 specify it in this variable.
5400 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
5401 some operating systems, this comes back from gethostbyaddr() as an empty
5402 string, and this is what Exim used to test for. However, it seems that in
5403 other systems, "." is yielded. Exim now tests for this case too.
5405 7. The values of check_spool_space and check_log_space are now held internally
5406 as a number of kilobytes instead of an absolute number of bytes. If a
5407 numbers is specified without 'K' or 'M', it is rounded up to the nearest
5408 kilobyte. This means that much larger values can be stored.
5410 8. Exim monitor: an attempt to get the action menu when not actually pointing
5411 at a message produces an empty menu entitled "No message selected". This
5412 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
5413 no entries in it ("Shell widget menu has zero width and/or height"). So I
5414 have added a single, blank menu entry in this case.
5416 9. Added ${quote_local_part.
5418 10. MIME decoding is now applied to the contents of Subject: header lines when
5421 11. Now that a reference to $sender_host_address automatically causes a reverse
5422 lookup to occur if necessary (4.13/18), there is no need to arrange for a
5423 host lookup before query-style lookups in lists that might use this
5424 variable. This has therefore been abolished, and the "net-" prefix is no
5425 longer necessary for query-style lookups.
5427 12. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
5428 have been a typo for LFLAGS, so it has been changed.
5430 13. The install script calls Exim with "-C /dev/null" in order to find the
5431 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
5432 to be output. Howeve, since Exim outputs its version number before the
5433 error, it didn't break the script. It just looked ugly. I fixed this by
5434 always allowing "-C /dev/null" if the caller is root.
5436 14. Ignore overlarge ACL variable number when reading spool file - insurance
5437 against a later release with more variables having written the file.
5439 15. The standard form for an IPv6 address literal was being rejected by EHLO.
5440 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
5441 this, as well as the form without the "IPv6" on the front.
5443 16. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
5444 OS/Makefile-Darwin file.
5446 17. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
5447 only to LDAP libraries that do not have LDAP_OPT_DEREF.
5449 18. After change 4.21/52, "%ld" was used to format the contents of the $inode
5450 variable. However, some OS use ints for inodes. I've added cast to long int
5451 to get rid of the compiler warning.
5453 19. I had forgotten to lock out "/../" in configuration file names when
5454 ALT_CONFIG_PREFIX was set.
5456 20. Routers used for verification do not need to specify transports. However,
5457 if such a router generated a host list, and callout was configured, Exim
5458 crashed, because it could not find a port number from the (non-existent)
5459 transport. It now assumes port 25 in this circumstance.
5461 21. Added the -t option to exigrep.
5463 22. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
5464 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
5465 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
5466 them is set, LOOKUP_LSEARCH is forced.
5468 23. "exim -bV" now outputs a list of lookups that are included in the binary.
5470 24. Added sender and host information to the "rejected by local_scan()" log
5471 line; previously there was no indication of these.
5473 25. Added .include_if_exists.
5475 26. Change 3.952/11 added an explicit directory sync on top of a file sync for
5476 Linux. It turns out that not all file systems support this. Apparently some
5477 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
5478 do it.) To cope with this, the error EINVAL, which means that sync-ing is
5479 not supported on the file descriptor, is now ignored when Exim is trying to
5480 sync a directory. This applies only to Linux.
5482 27. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
5484 28. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
5485 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
5488 29. Added support for maildirsize files from supplied patch (modified a bit).
5490 30. The use of :fail: followed by an empty string could lead Exim to respond to
5491 sender verification failures with (e.g.):
5493 550 Verification failed for <xxx>
5494 550 Sender verify failed
5496 where the first response line was missing the '-' that indicates it is not
5497 the final line of the response.
5499 31. The loop for finding the name of the user that called Exim had a hardwired
5500 limit of 10; it now uses the value of finduser_retries, which is used for
5501 all other user lookups.
5503 32. Added $received_count variable, available in data and not_smtp ACLs, and at
5506 33. Exim was neglecting to zero errno before one call of strtol() when
5507 expanding a string and expecting an integer value. On some systems this
5508 resulted in spurious "integer overflow" errors. Also, it was casting the
5509 result into an int without checking.
5511 34. Testing for a connection timeout using "timeout_connect" in the retry rules
5512 did not work. The code looks as if it has *never* worked, though it appears
5513 to have been documented since at least releast 1.62. I have made it work.
5515 35. The "timeout_DNS" error in retry rules, also documented since at least
5516 1.62, also never worked. As it isn't clear exactly what this means, and
5517 clearly it isn't a major issue, I have abolished the feature by treating it
5518 as "timeout", and writing a warning to the main and panic logs.
5520 36. The display of retry rules for -brt wasn't always showing the error code
5523 37. Added new error conditions to retry rules: timeout_A, timeout_MX,
5524 timeout_connect_A, timeout_connect_MX.
5526 38. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
5527 to the empty sender.
5529 39. The daemon was not analysing the content of -oX till after it had closed
5530 stderr and disconnected from the controlling terminal. This meant that any
5531 syntax errors were only noted on the panic log, and the return code from
5532 the command was 0. By re-arranging the code a little, I've made the
5533 decoding happen first, so such errors now appear on stderr, and the return
5534 code is 1. However, the actual setting up of the sockets still happens in
5535 the disconnected process, so errors there are still only recorded on the
5538 40. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
5539 connections (as happens on some IP stacks) was logged at start up time as
5540 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
5541 it from "IPv6 and IPv4", which means that two separate sockets are being
5544 41. The debug output for gethostbyname2() or getipnodebyname() failures now
5545 says whether AF_INET or AF_INET6 was passed as an argument.
5547 42. Exiwhat output was messed up when time zones were included in log
5550 43. Exiwhat now gives more information about the daemon's listening ports,
5551 and whether -tls-on-connect was used.
5553 44. The "port" option of the smtp transport is now expanded.
5555 45. A "message" modifier in a "warn" statement in a non-message ACL was being
5556 silently ignored. Now an error message is written to the main and panic
5559 46. There's a new ACL modifier called "logwrite" which writes to a log file
5560 as soon as it is encountered.
5562 47. Added $local_user_uid and $local_user_gid at routing time.
5564 48. Exim crashed when trying to verify a sender address that was being
5567 49. Exim was recognizing only a space character after ".include". It now also
5568 recognizes a tab character.
5570 50. Fixed several bugs in the Perl script that creates the exim.8 man page by
5571 extracting the relevant information from the specification. The man page no
5572 longer contains scrambled data for the -d option, and I've added a section
5573 at the front about calling Exim under different names.
5575 51. Added "extra_headers" argument to the "mail" command in filter files.
5577 52. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
5580 53. Installed eximstats 1.29.
5582 54. Added transport_filter_timeout as a generic transport option.
5584 55. Exim no longer adds an empty Bcc: header to messages that have no To: or
5585 Cc: header lines. This was required by RFC 822, but it not required by RFC
5588 56. Exim used to add From:, Date:, and Message-Id: header lines to any
5589 incoming messages that did not have them. Now it does so only if the
5590 message originates locally, that is, if there is no associated remote host
5591 address. When Resent- header lines are present, this applies to the Resent-
5592 lines rather than the non-Resent- lines.
5594 57. Drop incoming SMTP connection after too many syntax or protocol errors. The
5595 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
5597 58. Messages for configuration errors now include the name of the main
5598 configuration file - useful now that there may be more than one file in a
5599 list (.included file names were always shown).
5601 59. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
5602 for those rare installations that do not start the daemon as root or run it
5603 setuid root. I've cut out the call to initgroups() if the daemon is not
5606 60. The Exim user and group can now be bound into the binary as text strings
5607 that are looked up at the start of Exim's processing.
5609 61. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
5611 62. Added $mailstore_basename variable.
5613 63. Installed patch to sieve.c from Michael Haardt.
5615 64. When Exim failed to open the panic log after failing to open the main log,
5616 the original message it was trying to log was written to stderr and debug
5617 output, but if they were not available (the usual case in production), it
5618 was lost. Now it is written to syslog before the two lines that record the
5619 failures to open the logs.
5621 65. Users' Exim filters run in subprocesses under the user's uid. It is
5622 possible for a "deliver" command or an alias in a "personal" command to
5623 provoke an address rewrite. If logging of address rewriting is configured,
5624 this fails because the process is not running as root or exim. There may be
5625 a better way of dealing with this, but for the moment (because 4.30 needs
5626 to be released), I have disabled address rewrite logging when running a
5627 filter in a non-root, non-exim process.
5633 1. The buildconfig auxiliary program wasn't quoting the value set for
5634 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
5635 not defined. This bug was masked in 4.22 by the effect that was fixed in
5638 2. Some messages that were rejected after a message id was allocated were
5639 shown as "incomplete" by exigrep. It no longer does this for messages that
5640 are rejected by local_scan() or the DATA or non-SMTP ACLs.
5642 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
5643 have allow_domain_literals set, the ID did not get logged in the <= line.
5644 Domain literals are now always recognized in Message-ID: header lines.
5646 4. The first argument for a ${extract expansion item is the key name or field
5647 number. Leading and trailing spaces in this item were not being ignored,
5648 causing some misleading effects.
5650 5. When deliver_drop_privilege was set, single queue runner processes started
5651 manually (i.e. by the command "exim -q") or by the daemon (which uses the
5652 same command in the process it spins off) were not dropping privilege.
5654 6. When the daemon running as "exim" started a queue runner, it always
5655 re-executed Exim in the spun-off process. This is a waste of effort when
5656 deliver_drop_privilege is set. The new process now just calls the
5657 queue-runner function directly.
5663 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
5666 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
5667 ignored. Though the use of -oP was forcing the writing of a pid file, it
5668 was always written to the default place.
5670 3. If the message "no IP address found for host xxxx" is generated during
5671 incoming verification, it is now followed by identification of the incoming
5672 connection (so you can more easily find what provoked it).
5674 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
5676 5. Added some features to "harden" Exim a bit more against certain attacks:
5678 (a) There is now a build-time option called FIXED_NEVER_USERS that can
5679 be put in Local/Makefile. This is like the never_users runtime option,
5680 but it cannot be overridden. The default setting is "root".
5682 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
5683 prefix string with which any file named in a -C command line option
5686 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
5687 is retained for -C and -D only if the caller of Exim is root. Without
5688 it, the exim user may also use -C and -D and retain privilege.
5690 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
5691 command line option is disabled.
5693 6. Macro names set by the -D option must start with an upper case letter, just
5694 like macro names defined in the configuration file.
5696 7. Added "dereference=" facility to LDAP.
5698 8. Two instances of the typo "uknown" in the source files are fixed.
5700 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
5701 the Configure-Makefile script screwed up while processing it.
5703 10. Incorporated PCRE 4.4.
5705 11. The SMTP synchronization check was not operating right at the start of an
5706 SMTP session. For example, it could not catch a HELO sent before the client
5707 waited for the greeting. There is now a check for outstanding input at the
5708 point when the greeting is written. Because of the duplex, asynchronous
5709 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
5710 way, but not yet received, when the check is performed.
5712 12. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
5713 on TCP/IP sockets, because this apparently causes some broken clients to
5716 13. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
5717 unchanged) from the Cygwin maintainer.
5719 14. The code for -bV that shows what is in the binary showed "mbx" when maildir
5720 was supported instead of testing for mbx. Effectively a typo.
5722 15. The spa authenticator server code was not checking that the input it
5723 received was valid base64.
5725 16. The debug output line for the "set" modifier in ACLs was not showing the
5726 name of the variable that was being set.
5728 17. Code tidy: the variable type "vtype_string" was never used. Removed it.
5730 18. Previously, a reference to $sender_host_name did not cause a DNS reverse
5731 lookup on its own. Something else was needed to trigger the lookup. For
5732 example, a match in host_lookup or the need for a host name in a host list.
5733 Now, if $sender_host_name is referenced and the host name has not yet been
5734 looked up, a lookup is performed. If the lookup fails, the variable remains
5735 empty, and $host_lookup_failed is set to "1".
5737 19. Added "eqi" as a case-independent comparison operator.
5739 20. The saslauthd authentication condition could segfault if neither service
5740 nor realm was specified.
5742 21. If an overflowing value such as "2048M" was set for message_size_limit, the
5743 error message that was logged was misleading, and incoming SMTP
5744 connections were dropped. The message is now more accurate, and temporary
5745 errors are given to SMTP connections.
5747 22. In some error situations (such as 21 above) Exim rejects all SMTP commands
5748 (except RSET) with a 421 error, until QUIT is received. However, it was
5749 failing to send a response to QUIT.
5751 23. The HELO ACL was being run before the code for helo_try_verify_hosts,
5752 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
5753 ACL is now run after the helo_try_verify_hosts code.
5755 24. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
5756 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
5757 case-independent, so other case variants are also recognized). Apparently
5758 some systems use these upper case variants.
5760 25. If more than two messages were waiting for the same host, and a transport
5761 filter was specified for the transport, Exim sent two messages over the
5762 same TCP/IP connection, and then failed with "socket operation on non-
5763 socket" when it tried to send the third.
5765 26. Added Exim::debug_write and Exim::log_write for embedded Perl use.
5767 27. The extern definition of crypt16() in expand.c was not being excluded when
5768 the OS had its own crypt16() function.
5770 28. Added bounce_return_body as a new option, and bounce_return_size_limit
5771 as a preferred synonym for return_size_limit, both as an option and as an
5774 29. Added LIBS=-liconv to OS/Makefile-OSF1.
5776 30. Changed the default configuration ACL to relax the local part checking rule
5777 for addresses that are not in any local domains. For these addresses,
5778 slashes and pipe symbols are allowed within local parts, but the sequence
5779 /../ is explicitly forbidden.
5781 31. SPA server authentication was not clearing the challenge buffer before
5784 32. log_message in a "warn" ACL statement was writing to the reject log as
5785 well as to the main log, which contradicts the documentation and doesn't
5786 seem right (because no rejection is happening). So I have stopped it.
5788 33. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
5789 However, I am unable to do any testing of this.
5791 34. Fixed an infelicity in the appendfile transport. When checking directories
5792 for a mailbox, to see if any needed to be created, it was accidentally
5793 using path names with one or more superfluous leading slashes; tracing
5794 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
5796 35. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
5797 contents are added to the log line that is written for every discarded
5798 recipient. (Previously a log_message setting was ignored.)
5800 36. The ${quote: operator now quotes the string if it is empty.
5802 37. The install script runs exim in order to find its version number. If for
5803 some reason other than non-existence or emptiness, which it checks, it
5804 could not run './exim', it was installing it with an empty version number,
5805 i.e. as "exim-". This error state is now caught, and the installation is
5808 38. An argument was missing from the function that creates an error message
5809 when Exim fails to connect to the socket for saslauthd authentication.
5810 This could cause Exim to crash, or give a corrupted message.
5812 39. Added isip, isip4, and isip6 to ${if conditions.
5814 40. The ACL variables $acl_xx are now saved with the message, and can be
5815 accessed later in routers, transports, and filters.
5817 41. The new lookup type nwildlsearch is like wildlsearch, except that the key
5818 strings in the file are not string-expanded.
5820 42. If a MAIL command specified a SIZE value that was too large to fit into an
5821 int variable, the check against message_size_limit failed. Such values are
5822 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
5823 day this will have to be increased, but I don't think I want to be around
5824 when emails are that large.
5831 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
5832 iconv() is not standard in FreeBSD.
5834 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with
5835 IPv6 enabled. The observed symptom was a segmentation fault on return from
5836 the function os_common_find_running_interfaces() in src/os.c.
5838 3. In the check_special_case() function in daemon.c I had used "errno" as an
5839 argument name, which causes warnings on some systems. This was basically a
5840 typo, since it was named "eno" in the comments!
5842 4. The code that waits for the clock to tick (at a resolution of some fraction
5843 of a second) so as to ensure message-id uniqueness was always waiting for
5844 at least one whole tick, when it could have waited for less. [This is
5845 almost certainly not relevant at current processor speeds, where it is
5846 unlikely to ever wait at all. But we try to future-proof.]
5848 5. The function that sleeps for a time interval that includes fractions of a
5849 second contained a race. It did not block SIGALRM between setting the
5850 timer, and suspending (a couple of lines later). If the interval was short
5851 and the sigsuspend() was delayed until after it had expired, the suspension
5852 never ended. On busy systems this could lead to processes getting stuck for
5855 6. Some uncommon configurations may cause a lookup to happen in a queue runner
5856 process, before it forks any delivery processes. The open lookup caching
5857 mechanism meant that the open file or database connection was passed into
5858 the delivery process. The problem was that delivery processes always tidy
5859 up cached lookup data. This could cause a problem for the next delivery
5860 process started by the queue runner, because the external queue runner
5861 process does not know about the closure. So the next delivery process
5862 still has data in the lookup cache. In the case of a file lookup, there was
5863 no problem because closing a file descriptor in a subprocess doesn't affect
5864 the parent. However, if the lookup was caching a connection to a database,
5865 the connection was closed, and the second delivery process was likely to
5866 see errors such as "PGSQL: query failed: server closed the connection
5867 unexpectedly". The problem has been fixed by closing all cached lookups
5868 in a queue runner before running a delivery process.
5870 7. Compiler warning on Linux for the second argument of iconv(), which doesn't
5871 seem to have the "const" qualifier which it has on other OS. I've
5874 8. Change 4.21/2 was too strict. It is only if there are two authenticators
5875 *of the same type* (client or server) with the same public name that an
5876 error should be diagnosed.
5878 9. When Exim looked up a host name for an IP address, but failed to find the
5879 original IP address when looking up the host name (a safety check), it
5880 output the message "<ip address> does not match any IP for NULL", which was
5881 confusing, to say the least. The bug was that the host name should have
5882 appeared instead of "NULL".
5884 10. Since release 3.03, if Exim is called by a uid other than root or the Exim
5885 user that is built into the binary, and the -C or -D options is used, root
5886 privilege is dropped before the configuration file is read. In addition,
5887 logging is switched to stderr instead of the normal log files. If the
5888 configuration then re-defines the Exim user, the unprivileged environment
5889 is probably not what is expected, so Exim logs a panic warning message (but
5892 However, if deliver_drop_privilege is set, the unprivileged state may well
5893 be exactly what is intended, so the warning has been cut out in that case,
5894 and Exim is allowed to try to write to its normal log files.
5900 1. smtp_return_error_details was not giving details for temporary sender
5901 or receiver verification errors.
5903 2. Diagnose a configuration error if two authenticators have the same public
5906 3. Exim used not to create the message log file for a message until the first
5907 delivery attempt. This could be confusing when incoming messages were held
5908 for policy or load reasons. The message log file is now created at the time
5909 the message is received, and an initial "Received" line is written to it.
5911 4. The automatically generated man page for command line options had a minor
5912 bug that caused no ill effects; however, a more serious problem was that
5913 the procedure for building the man page automatically didn't always
5914 operate. Consequently, release 4.20 contains an out-of-date version. This
5915 shouldn't happen again.
5917 5. When building Exim with embedded Perl support, the script that builds the
5918 Makefile was calling 'perl' to find its compile-time parameters, ignoring
5919 any setting of PERL_COMMAND in Local/Makefile. This is now fixed.
5921 6. The freeze_tell option was not being used for messages that were frozen on
5922 arrival, either by an ACL or by local_scan().
5924 7. Added the smtp_incomplete_transaction log selector.
5926 8. After STARTTLS, Exim was not forgetting that it had advertised AUTH, so it
5927 was accepting AUTH without a new EHLO.
5929 9. Added tls_remember_esmtp to cope with YAEB. This allows AUTH and other
5930 ESMTP extensions after STARTTLS without a new EHLO, in contravention of the
5933 10. Logging of TCP/IP connections (when configured) now happens in the main
5934 daemon process instead of the child process, so that the TCP/IP connection
5935 count is more accurate (but it can never be perfect).
5937 11. The use of "drop" in a nested ACL was not being handled correctly in the
5938 outer ACL. Now, if condition failure induced by the nested "drop" causes
5939 the outer ACL verb to deny access ("accept" or "discard" after "endpass",
5940 or "require"), the connection is dropped.
5942 12. Similarly, "discard" in a nested ACL wasn't being handled. A nested ACL
5943 that yield "discard" can now be used with an "accept" or a "discard" verb,
5944 but an error is generated for any others (because I can't see a useful way
5945 to define what should happen).
5947 13. When an ACL is read dynamically from a file (or anywhere else), the lines
5948 are now processed in the same way as lines in the Exim configuration file.
5949 In particular, continuation lines are supported.
5951 14. Added the "dnslists = a.b.c!=n.n.n.n" feature.
5953 15. Added -ti meaning -t -i.
5955 16. Check for letters, digits, hyphens, and dots in the names of dnslist
5956 domains, and warn by logging if others are found.
5958 17. At least on BSD, alignment is not guarenteed for the array of ifreq's
5959 returned from GIFCONF when Exim is trying to find the list of interfaces on
5960 a host. The code in os.c has been modified to copy each ifreq to an aligned
5961 structure in all cases.
5963 Also, in some cases, the returned ifreq's were being copied to a 'struct
5964 ifreq' on the stack, which was subsequently passed to host_ntoa(). That
5965 means the last couple of bytes of an IPv6 address could be chopped if the
5966 ifreq contained only a normal sockaddr (14 bytes storage).
5968 18. Named domain lists were not supported in the hosts_treat_as_local option.
5969 An entry such as +xxxx was not recognized, and was treated as a literal
5972 19. Ensure that header lines added by a DATA ACL are included in the reject log
5973 if the ACL subsequently rejects the message.
5975 20. Upgrade the cramtest.pl utility script to use Digest::MD5 instead of just
5976 MD5 (which is deprecated).
5978 21. When testing a filter file using -bf, Exim was writing a message when it
5979 took the sender from a "From " line in the message, but it was not doing so
5980 when it took $return_path from a Return-Path: header line. It now does.
5982 22. If the contents of a "message" modifier for a "warn" ACL verb do not begin
5983 with a valid header line field name (a series of printing characters
5984 terminated by a colon, Exim now inserts X-ACL-Warn: at the beginning.
5986 23. Changed "disc" in the source to "disk" to conform to the documentation and
5987 the book and for uniformity.
5989 24. Ignore Sendmail's -Ooption=value command line item.
5991 25. When execve() failed while trying to run a command in a pipe transport,
5992 Exim was returning EX_UNAVAILBLE (69) from the subprocess. However, this
5993 could be confused with a return value of 69 from the command itself. This
5994 has been changed to 127, the value the shell returns if it is asked to run
5995 a non-existent command. The wording for the related log line suggests a
5996 non-existent command as the problem.
5998 26. If received_header_text expands to an empty string, do not add a Received:
5999 header line to the message. (Well, it adds a token one on the spool, but
6000 marks it "old" so that it doesn't get used or transmitted.)
6002 27. Installed eximstats 1.28 (addition of -nt option).
6004 28. There was no check for failure on the call to getsockname() in the daemon
6005 code. This can fail if there is a shortage of resources on the system, with
6006 ENOMEM, for example. A temporary error is now given on failure.
6008 29. Contrary to the C standard, it seems that in some environments, the
6009 equivalent of setlocale(LC_ALL, "C") is not obeyed at the start of a C
6010 program. Exim now does this explicitly; it affects the formatting of
6011 timestamps using strftime().
6013 30. If exiqsumm was given junk data, it threw up some uninitialized variable
6014 complaints. I've now initialized all the variables, to avoid this.
6016 32. Header lines added by a system filter were not being "seen" during
6017 transport-time rewrites.
6019 33. The info_callback() function passed to OpenSSL is set up with type void
6020 (*)(SSL *, int, int), as described somewhere. However, when calling the
6021 function (actually a macro) that sets it up, the type void(*)() is
6022 expected. I've put in a cast to prevent warnings from picky compilers.
6024 34. If a DNS black list lookup found a CNAME record, but there were no A
6025 records associated with the domain it pointed at, Exim crashed.
6027 35. If a DNS black list lookup returned more than one A record, Exim ignored
6028 all but the first. It now scans all returned addresses if a particular IP
6029 value is being sought. In this situation, the contents of the
6030 $dnslist_value variable are a list of all the addresses, separated by a
6033 36. Tightened up the rules for host name lookups using reverse DNS. Exim used
6034 to accept a host name and all its aliases if the forward lookup for any of
6035 them yielded the IP address of the incoming connection. Now it accepts only
6036 those names whose forward lookup yields the correct IP address. Any other
6037 names are discarded. This closes a loophole whereby a rogue DNS
6038 administrator could create reverse DNS records to break through a
6039 wildcarded host restriction in an ACL.
6041 37. If a user filter or a system filter that ran in a subprocess used any of
6042 the numerical variables ($1, $2 etc), or $thisaddress, in a pipe command,
6043 the wrong values were passed to the pipe command ($thisaddress had the
6044 value of $0, $0 had the value of $1, etc). This bug was introduced by
6045 change 4.11/101, and not discovered because I wrote an inadequate test. :-(
6047 38. Improved the line breaking for long SMTP error messages from ACLs.
6048 Previously, if there was no break point between 40 and 75 characters, Exim
6049 left the rest of the message alone. Two changes have been made: (a) I've
6050 reduced the minimum length to 35 characters; (b) if it can't find a break
6051 point between 35 and 75 characters, it looks ahead and uses the first one
6052 that it finds. This may give the occasional overlong line, but at least the
6053 remaining text gets split now.
6055 39. Change 82 of 4.11 was unimaginative. It assumed the limit on the number of
6056 file descriptors might be low, and that setting 1000 would always raise it.
6057 It turns out that in some environments, the limit is already over 1000 and
6058 that lowering it causes trouble. So now Exim takes care not to decrease it.
6060 40. When delivering a message, the value of $return_path is set to $sender_
6061 address at the start of routing (routers may change the value). By an
6062 oversight, this default was not being set up when an address was tested by
6063 -bt or -bv, which affected the outcome if any router or filter referred to
6066 41. The idea of the "warn" ACL verb is that it adds a header or writes to the
6067 log only when "message" or "log_message" are set. However, if one of the
6068 conditions was an address verification, or a call to a nested ACL, the
6069 messages generated by the underlying test were being passed through. This
6070 no longer happens. The underlying message is available in $acl_verify_
6071 message for both "message" and "log_message" expansions, so it can be
6072 passed through if needed.
6074 42. Added RFC 2047 interpretation of header lines for $h_ expansions, with a
6075 new expansion $bh_ to give the encoded byte string without charset
6076 translation. Translation happens only if iconv() is available; HAVE_ICONV
6077 indicates this at build time. HEADERS_CHARSET gives the charset to
6078 translate to; headers_charset can change it in the configuration, and
6079 "headers charset" can change it in an individual filter file.
6081 43. Now that we have a default RFC 2047 charset (see above), the code in Exim
6082 that creates RFC 2047 encoded "words" labels them as that charset instead
6083 of always using iso-8859-1. The cases are (i) the explicit ${rfc2047:
6084 expansion operator; (ii) when Exim creates a From: line for a local
6085 message; (iii) when a header line is rewritten to include a "phrase" part.
6087 44. Nasty bug in exiqsumm: the regex to skip already-delivered addresses was
6088 buggy, causing it to skip the first lines of messages whose message ID
6089 ended in 'D'. This would not have bitten before Exim release 4.14, because
6090 message IDs were unlikely to end in 'D' before then. The effect was to have
6091 incorrect size information for certain domains.
6093 45. #include "config.h" was missing at the start of the crypt16.c module. This
6094 caused trouble on Tru64 (aka OSF1) systems, because HAVE_CRYPT16 was not
6097 46. If there was a timeout during a "random" callout check, Exim treated it as
6098 a failure of the random address, and carried on sending RSET and the real
6099 address. If the delay was just some slowness somewhere, the response to the
6100 original RCPT would be taken as a response to RSET and so on, causing
6101 mayhem of various kinds.
6103 47. Change 50 for 4.20 was a heap of junk. I don't know what I was thinking
6104 when I implemented it. It didn't allow for the fact that some option values
6105 may legitimatetly be negative (e.g. size_addition), and it didn't even do
6106 the right test for positive values.
6108 48. Domain names in DNS records are case-independent. Exim always looks them up
6109 in lower case. Some resolvers return domain names in exactly the case they
6110 appear in the zone file, that is, they may contain uppercase letters. Not
6111 all resolvers do this - some return always lower case. Exim was treating a
6112 change of case by a resolver as a change of domain, similar to a widening
6113 of a domain abbreviation. This triggered its re-routing code and so it was
6114 trying to route what was effectively the same domain again. This normally
6115 caused routing to fail (because the router wouldn't handle the domain
6116 twice). Now Exim checks for this case specially, and just changes the
6117 casing of the domain that it ultimately uses when it transmits the message
6120 49. Added Sieve (RFC 3028) support, courtesy of Michael Haardt's contributed
6123 50. If a filter generated a file delivery with a non-absolute name (possible if
6124 no home directory exists for the router), the forbid_file option was not
6127 51. Added '&' feature to dnslists, to provide bit mask matching in addition to
6128 the existing equality matching.
6130 52. Exim was using ints instead of ino_t variables in some places where it was
6131 dealing with inode numbers.
6133 53. If TMPDIR is defined in Local/Makefile (default in src/EDITME is
6134 TMPDIR="/tmp"), Exim checks for the presence of an environment variable
6135 called TMPDIR, and if it finds it is different, it changes its value.
6137 54. The smtp_printf() function is now made available to local_scan() so
6138 additional output lines can be written before returning. There is also an
6139 smtp_fflush() function to enable the detection of a dropped connection.
6140 The variables smtp_input and smtp_batched_input are exported to
6143 55. Changed the default runtime configuration: the message "Unknown user"
6144 has been removed from the ACL, and instead placed on the localuser router,
6145 using the cannot_route_message feature. This means that any verification
6146 failures that generate their own messages won't get overridden. Similarly,
6147 the "Unrouteable address" message that was in the ACL for unverifiable
6148 relay addresses has also been removed.
6150 56. Added hosts_avoid_esmtp to the smtp transport.
6152 57. The exicyclog script was not checking for the esoteric option
6153 CONFIGURE_FILE_USE_EUID in the Local/Makefile. It now does this, but it
6154 will work only if exicyclog is run under the appropriate euid.
6156 58. Following a discussion on the list, the rules by which Exim recognises line
6157 endings on incoming messages have been changed. The -dropcr and drop_cr
6158 options are now no-ops, retained only for backwards compatibility. The
6159 following line terminators are recognized: LF CRLF CR. However, special
6160 processing applies to CR:
6162 (i) The sequence CR . CR does *not* terminate an incoming SMTP message,
6163 nor a local message in the state where . is a terminator.
6165 (ii) If a bare CR is encountered in a header line, an extra space is added
6166 after the line terminator so as not to end the header. The reasoning
6167 behind this is that bare CRs in header lines are most likely either
6168 to be mistakes, or people trying to play silly games.
6170 59. The size of a message, as listed by "-bp" or in the Exim monitor window,
6171 was being incorrectly given as 18 bytes larger than it should have been.
6172 This is a VOB (very old bug).
6174 60. This may never have affected anything current, but just in case it has:
6175 When the local host is found other than at the start of a list of hosts,
6176 the local host, those with the same MX, and any that follow, are discarded.
6177 When the list in question was part of a longer list of hosts, the following
6178 hosts (not currently being processed) were also being discarded. This no
6179 longer happens. I'm not sure if this situation could ever has previously
6182 61. Added the "/MX" feature to lists of hosts in the manualroute and query
6185 62. Whenever Exim generates a new message, it now adds an Auto-Submitted:
6186 header. This is something that is recommended in a new Internet Draft, and
6187 is something that is documented as being done by Sendmail. There are two
6188 possible values. For messages generated by the autoreply transport, Exim
6191 Auto-Submitted: auto-replied
6193 whereas for all other generated messages (e.g. bounces) it adds
6195 Auto-Submitted: auto-generated
6197 63. The "personal" condition in filters now includes a test for the
6198 Auto-Submitted: header. If it contains the string "auto-" the message it
6199 not considered personal.
6201 64. Added rcpt_include_affixes as a generic transport option.
6203 65. Added queue_only_override (default true).
6205 66. Added the syslog_duplication option.
6207 67. If what should have been the first header line of a message consisted of
6208 a space followed by a colon, Exim was mis-interpreting it as a header line.
6209 It isn't of course - it is syntactically invalid and should therefore be
6210 treated as the start of the message body. The misbehaviour could have
6211 caused a number of strange effects, including loss of data in subsequent
6212 header lines, and spool format errors.
6214 68. Formerly, the AUTH parameter on a MAIL command was trusted only if the
6215 client host had authenticated. This control can now be exercised by an ACL
6216 for more flexibility.
6218 69. By default, callouts do not happen when testing with -bh. There is now a
6219 variant, -bhc, which does actually run the callout code, including
6220 consulting and updating the callout cache.
6222 70. Added support for saslauthd authentication, courtesy of Alexander
6225 71. If statvfs() failed on the spool or log directories while checking their
6226 size for availability, Exim confusingly gave the error "space shortage".
6227 Furthermore, in debugging mode it crashed with a floating point exception.
6228 These checks are done if check_{spool,log}_{space,inodes} are set, and when
6229 an SMTP message arrives with SIZE= on the MAIL command. As this is a really
6230 serious problem, Exim now writes to the main and panic logs when this
6231 happens, with details of the failure. It then refuses to accept the
6232 incoming message, giving the message "spool directory problem" or "log
6233 directory problem" with a 421 code for SMTP messages.
6235 72. When Exim is about to re-exec itself, it ensures that the file descriptors
6236 0, 1, and 2 exist, because some OS complain for execs without them (see
6237 ChangeLog 4.05/30). If necessary, Exim opens /dev/null to use for these
6238 descriptors. However, the code omitted to check that the open succeeded,
6239 causing mysterious errors if for some reason the permissions on /dev/null
6240 got screwed. Now Exim writes a message to the main and panic logs, and
6241 bombs out if it can't open /dev/null.
6243 73. Re-vamped the way daemon_smtp_port, local_interfaces, and -oX work and
6244 interact so that it is all more flexible. It is supposed to remain
6245 backwards compatible. Also added extra_local_interfaces.
6247 74. Invalid data sent to a SPA (NTLM) server authenticator could cause the code
6248 to bomb out with an assertion failure - to the client this appears as a
6249 connection drop. This problem occurs in the part of the code that was taken
6250 from the Samba project. Fortunately, the assertion is in a very simple
6251 function, so I have fixed this by reproducing the function inline in the
6252 one place where it is called, and arranging for authentication to fail
6253 instead of killing the process with assert().
6255 75. The SPA client code was not working when the server requested OEM rather
6256 than Unicode encoding.
6258 76. Added code to make require_files with a specific uid setting more usable in
6259 the case where statting the file as root fails - usually a non-root-mounted
6260 NFS file system. When this happens and the failure is EACCES, Exim now
6261 forks a subprocess and does the per-uid checking as the relevant uid.
6263 77. Added process_log_path.
6265 78. If log_file_path was not explicitly set, a setting of check_log_space or
6266 check_log_inodes was ignored.
6268 79. If a space check for the spool or log partitions fails, the incident is now
6269 logged. Of course, in the latter case the data may get lost...
6271 80. Added the %p formatting code to string_format() so that it can be used to
6272 print addresses in debug_print(). Adjusted all the address printing in the
6273 debugging in store.c to use %p rather than %d.
6275 81. There was a concern that a line of code in smtp_in.c could overflow a
6276 buffer if a HELO/EHLO command was given followed by 500 or so spaces. As
6277 initially expressed, the concern was not well-founded, because trailing
6278 spaces are removed early. However, if the trailing spaces were followed by
6279 a NULL, they did not get removed, so the overflow was possible. Two fixes
6282 (a) I re-wrote the offending code in a cleaner fashion.
6283 (b) If an incoming SMTP command contains a NULL character, it is rejected
6286 82. When Exim changes uid/gid to the Exim user at daemon start time, it now
6287 runs initgroups(), so that if the Exim user is in any additional groups,
6288 they will be used during message reception.
6294 The change log for 4.20 and earlier releases has been archived.
git://git.exim.org / exim.git / blob