1 Change log file for Exim from version 4.21
2 -------------------------------------------
7 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
9 PP/02 Make -n do something, by making it not do something.
10 When combined with -bP, the name of an option is not output.
12 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
15 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
16 $sender_host_name and config options to manage this, and basic check
19 PP/05 DSCP support for outbound connections and control modifier for inbound.
21 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
22 (Only plugin which currently uses this is kerberos4, which nobody should
23 be using, but we should make it available and other future plugins might
24 conceivably use it, even though it would break NAT; stuff *should* be
25 using channel bindings instead).
27 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
28 name; added for Sendmail compatibility; requires admin caller.
29 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
30 just ignore it); requires trusted caller.
31 Also parse but ignore: -Ac -Am -X<logfile>
34 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
36 TL/02 Add +smtp_confirmation as a default logging option.
38 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
39 Patch by Magnus Holmgren from 2007-02-20.
41 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
43 JH/02 Support "G" suffix to numbers in ${if comparisons.
45 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
47 NM/01 Bugzilla 1197 - Spec typo
48 Bugzilla 1196 - Spec examples corrections
50 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
52 PP/09 Add gnutls_enable_pkcs11 option.
54 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
55 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
57 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
58 "acl {{name}{arg}...}", and optional args on acl condition
61 JH/05 Permit multiple router/transport headers_add/remove lines.
66 PP/01 Handle short writes when writing local log-files.
67 In practice, only affects FreeBSD (8 onwards).
68 Bugzilla 1053, with thanks to Dmitry Isaikin.
70 NM/01 Bugzilla 949 - Documentation tweak
72 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
75 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
77 PP/02 Implemented gsasl authenticator.
79 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
81 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
82 `pkg-config foo` for cflags/libs.
84 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
85 with rest of GSASL and with heimdal_gssapi.
87 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
88 `pkg-config foo` for cflags/libs for the TLS implementation.
90 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
91 properties get this fed in as external SSF. A number of robustness
92 and debugging improvements to the cyrus_sasl authenticator.
94 PP/08 cyrus_sasl server now expands the server_realm option.
96 PP/09 Bugzilla 1214 - Log authentication information in reject log.
97 Patch by Jeremy Harris.
99 PP/10 Added dbmjz lookup type.
101 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
103 PP/12 MAIL args handles TAB as well as SP, for better interop with
104 non-compliant senders.
105 Analysis and variant patch by Todd Lyons.
107 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
108 Bug report from Lars Müller <lars@samba.org> (via SUSE),
109 Patch from Dirk Mueller <dmueller@suse.com>
111 PP/13 tls_peerdn now print-escaped for spool files.
112 Observed some $tls_peerdn in wild which contained \n, which resulted
113 in spool file corruption.
115 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
116 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
117 or write after TLS renegotiation, which otherwise led to messages
120 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
121 as a tracking header (ie: a signed header comes before the signature).
122 Patch from Wolfgang Breyha.
124 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
125 comma-sep list; embedded commas doubled.
127 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
129 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
131 Report and patch from Dmitry Banschikov.
133 PP/16 Removed "dont_insert_empty_fragments" fron "openssl_options".
134 Removed SSL_clear() after SSL_new() which led to protocol negotiation
135 failures. We appear to now support TLS1.1+ with Exim.
137 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
138 lets Exim select keys and certificates based upon TLS SNI from client.
139 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
140 before an outbound SMTP session. New log_selector, +tls_sni.
142 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
143 NULL dereference. Report and patch from Alun Jones.
145 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
146 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
147 Not seeing resolver debug output on NetBSD, but suspect this is a
148 resolver implementation change.
150 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
151 Left warnings. Added "eximon gdb" invocation mode.
153 PP/21 Defaulting "accept_8bitmime" to true, not false.
155 PP/22 Added -bw for inetd wait mode support.
157 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
158 locate the relevant includes and libraries. Made this the default.
160 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
161 Bugzilla 1246, report and most of solution from Tomasz Kusy.
163 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
164 This may cause build issues on older platforms.
166 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
167 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
168 gnutls_require_mac & gnutls_require_protocols (no longer supported).
169 Added SNI support via GnuTLS too.
170 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
172 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
174 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
175 Applied second patch from Janne, implementing suggestion to default
176 multiple-strings-in-record handling to match SPF spec.
178 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
180 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
181 read-only, out of scope).
182 Patch from Wolfgang Breyha, report from Stuart Northfield.
184 PP/29 Fix three issues highlighted by clang analyser static analysis.
185 Only crash-plausible issue would require the Cambridge-specific
186 iplookup router and a misconfiguration.
187 Report from Marcin Mirosław.
189 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
191 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
192 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
193 As part of this, removing so much warning spew let me fix some minor
194 real issues in debug logging.
196 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
197 assignment on my part. Fixed.
199 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
200 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
201 Janne Snabb (who went above and beyond: thank you).
203 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
204 string otherwise requires a connection and a bunch more work and it's
205 relatively easy to get wrong. Should also expose TLS library linkage
208 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
209 64-bit ${eval} (JH/03).
211 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
212 GNU libc to support some of the 64-bit stuff, should not lead to
213 conflicts. Defined before os.h is pulled in, so if a given platform
214 needs to override this, it can.
216 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
217 protection layer was required, which is not implemented.
218 Bugzilla 1254, patch from Wolfgang Breyha.
220 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
221 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
222 tls_dhparam take prime identifiers. Also unbreak combination of
223 OpenSSL+DH_params+TLSSNI.
225 PP/39 Disable SSLv2 by default in OpenSSL support.
231 PP/01 Solaris build fix for Oracle's LDAP libraries.
232 Bugzilla 1109, patch from Stephen Usher.
234 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
236 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
239 TF/02 Fix a couple more cases where we did not log the error message
240 when unlink() failed. See also change 4.74-TF/03.
242 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
243 lock up or crash if it happened to be inside a call to libc when it
244 got a SIGUSR1 from exiwhat.
246 The SIGUSR1 handler appends the current process status to the process
247 log which is later printed by exiwhat. It used to use the general
248 purpose logging code to do this, but several functions it calls are
249 not safe for signals.
251 The new output code in the SIGUSR1 handler is specific to the process
252 log, and simple enough that it's easy to inspect for signal safety.
253 Removing some special cases also simplifies the general logging code.
254 Removing the spurious timestamps from the process log simplifies
257 TF/04 Improved ratelimit ACL condition.
259 The /noupdate option has been deprecated in favour of /readonly which
260 has clearer semantics. The /leaky, /strict, and /readonly update modes
261 are mutually exclusive. The update mode is no longer included in the
262 database key; it just determines when the database is updated. (This
263 means that when you upgrde Exim will forget old rate measurements.)
265 Exim now checks that the per_* options are used with an update mode that
266 makes sense for the current ACL. For example, when Exim is processing a
267 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
268 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
269 must specify per_mail/readonly. If you omit the update mode it defaults to
270 /leaky where that makes sense (as before) or /readonly where required.
272 The /noupdate option is now undocumented but still supported for
273 backwards compatibility. It is equivalent to /readonly except that in
274 ACLs where /readonly is required you may specify /leaky/noupdate or
275 /strict/noupdate which are treated the same as /readonly.
277 A useful new feature is the /count= option. This is a generalization
278 of the per_byte option, so that you can measure the throughput of other
279 aggregate values. For example, the per_byte option is now equivalent
280 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
282 The per_rcpt option has been generalized using the /count= mechanism
283 (though it's more complicated than the per_byte equivalence). When it is
284 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
285 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
286 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
287 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
288 Note that using per_rcpt with a non-readonly update mode in more than
289 one ACL will cause the recipients to be double-counted. (The per_mail
290 and per_byte options don't have this problem.)
292 The handling of very low rates has changed slightly. If the computed rate
293 is less than the event's count (usually one) then this event is the first
294 after a long gap. In this case the rate is set to the same as this event's
295 count, so that the first message of a spam run is counted properly.
297 The major new feature is a mechanism for counting the rate of unique
298 events. The new per_addr option counts the number of different
299 recipients that someone has sent messages to in the last time period. It
300 behaves like per_rcpt if all the recipient addresses are different, but
301 duplicate recipient addresses do not increase the measured rate. Like
302 the /count= option this is a general mechanism, so the per_addr option
303 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
304 example, measure the rate that a client uses different sender addresses
305 with the options per_mail/unique=$sender_address. There are further
306 details in the main documentation.
308 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
310 TF/06 Removed a few PCRE remnants.
312 TF/07 Automatically extract Exim's version number from tags in the git
313 repository when doing development or release builds.
315 PP/02 Raise smtp_cmd_buffer_size to 16kB.
316 Bugzilla 879. Patch from Paul Fisher.
318 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
319 Heavily based on revision 40f9a89a from Simon Arlott's tree.
322 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
324 PP/05 Variable $av_failed, true if the AV scanner deferred.
325 Bugzilla 1078. Patch from John Horne.
327 PP/06 Stop make process more reliably on build failure.
328 Bugzilla 1087. Patch from Heiko Schlittermann.
330 PP/07 Make maildir_use_size_file an _expandable_ boolean.
331 Bugzilla 1089. Patch from Heiko Schlittermann.
333 PP/08 Handle ${run} returning more data than OS pipe buffer size.
334 Bugzilla 1131. Patch from Holger Weiß.
336 PP/09 Handle IPv6 addresses with SPF.
337 Bugzilla 860. Patch from Wolfgang Breyha.
339 PP/10 GnuTLS: support TLS 1.2 & 1.1.
341 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
344 PP/11 match_* no longer expand right-hand-side by default.
345 New compile-time build option, EXPAND_LISTMATCH_RHS.
346 New expansion conditions, "inlist", "inlisti".
348 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
350 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
352 PP/14 fix log_write() format string regression from TF/03.
353 Bugzilla 1152. Patch from Dmitry Isaikin.
359 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
361 PP/02 Harmonised TLS library version reporting; only show if debugging.
362 Layout now matches that introduced for other libraries in 4.74 PP/03.
364 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
366 PP/04 New "dns_use_edns0" global option.
368 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
371 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
372 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
374 TK/01 Updated PolarSSL code to 0.14.2.
375 Bugzilla 1097. Patch from Andreas Metzler.
377 PP/07 Catch divide-by-zero in ${eval:...}.
380 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
383 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
384 format-string attack -- SECURITY: remote arbitrary code execution.
386 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
387 time unintentionally subject to list matching rules, letting the header
388 cause arbitrary Exim lookups (of items which can occur in lists, *not*
389 arbitrary string expansion). This allowed for information disclosure.
391 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
392 INT_MIN/-1 -- value coerced to INT_MAX.
398 NM/01 Workround for PCRE version dependency in version reporting
401 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
402 This fixes portability to compilers other than gcc, notably
403 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
405 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
406 makefiles for portability to HP-UX and POSIX correctness.
408 PP/01 Permit LOOKUP_foo enabling on the make command-line.
409 Also via indented variable definition in the Makefile.
410 (Debugging by Oliver Heesakkers).
412 PP/02 Restore caching of spamd results with expanded spamd_address.
413 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
415 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
416 Improves build reliability. Fix from: Frank Elsner
418 NM/02 Fix wide character breakage in the rfc2047 coding
419 Fixes bug 1064. Patch from Andrey N. Oktyabrski
421 NM/03 Allow underscore in dnslist lookups
422 Fixes bug 1026. Patch from Graeme Fowler
424 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
425 Code patches from Adam Ciarcinski of NetBSD.
427 NM/04 Fixed exiqgrep to cope with mailq missing size issue
430 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
431 is logged, to avoid truncation. Patch from John Horne.
433 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
434 Patch from Jakob Hirsch.
436 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
437 SQL string expansion failure details.
438 Patch from Andrey Oktyabrski.
440 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
441 Patch from Simon Arlott.
443 PP/09 New lookups functionality failed to compile on old gcc which rejects
444 extern declarations in function scope.
445 Patch from Oliver Fleischmann
447 PP/10 Use sig_atomic_t for flags set from signal handlers.
448 Check getgroups() return and improve debugging.
449 Fixed developed for diagnosis in bug 927 (which turned out to be
452 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
453 Patch from Mark Zealey.
455 PP/12 Bugzilla 1056: Improved spamd server selection.
456 Patch from Mark Zealey.
458 PP/13 Bugzilla 1086: Deal with maildir quota file races.
459 Based on patch from Heiko Schlittermann.
461 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
462 Patch from Uwe Doering, sign-off by Michael Haardt.
464 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
465 variable declaration deep within a block. Bug and patch from
468 PP/15 lookups-Makefile IRIX compatibilty coercion.
470 PP/16 Make DISABLE_DKIM build knob functional.
472 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
473 Patch by Simon Arlott
475 TF/03 Fix valgrind.h portability to C89 compilers that do not support
476 variable argument macros. Our copy now differs from upstream.
482 TF/01 Failure to get a lock on a hints database can have serious
483 consequences so log it to the panic log.
485 TF/02 Log LMTP confirmation messages in the same way as SMTP,
486 controlled using the smtp_confirmation log selector.
488 TF/03 Include the error message when we fail to unlink a spool file.
490 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
491 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
492 for maintaining out-of-tree patches for some time.
494 PP/01 Bugzilla 139: Documentation and portability issues.
495 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
496 Handle per-OS dynamic-module compilation flags.
498 PP/02 Let /dev/null have normal permissions.
499 The 4.73 fixes were a little too stringent and complained about the
500 permissions on /dev/null. Exempt it from some checks.
501 Reported by Andreas M. Kirchwitz.
503 PP/03 Report version information for many libraries, including
504 Exim version information for dynamically loaded libraries. Created
505 version.h, now support a version extension string for distributors
506 who patch heavily. Dynamic module ABI change.
508 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
509 privilege escalation vulnerability whereby the Exim run-time user
510 can cause root to append content of the attacker's choosing to
513 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
516 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
517 If dropping privileges for untrusted macros, we disabled normal logging
518 on the basis that it would fail; for the Exim run-time user, this is not
519 the case, and it resulted in successful deliveries going unlogged.
520 Fixed. Reported by Andreas Metzler.
526 PP/01 Date: & Message-Id: revert to normally being appended to a message,
527 only prepend for the Resent-* case. Fixes regression introduced in
528 Exim 4.70 by NM/22 for Bugzilla 607.
530 PP/02 Include check_rfc2047_length in configure.default because we're seeing
531 increasing numbers of administrators be bitten by this.
533 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
535 PP/03 Bugzilla 994: added openssl_options main configuration option.
537 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
539 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
541 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
543 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
544 without a peer certificate, leading to a segfault because of an
545 assumption that peers always have certificates. Be a little more
546 paranoid. Problem reported by Martin Tscholak.
548 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
549 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
550 NB: ClamAV planning to remove STREAM in "middle of 2010".
551 CL also introduces -bmalware, various -d+acl logging additions and
552 more caution in buffer sizes.
554 PP/09 Implemented reverse_ip expansion operator.
556 PP/10 Bugzilla 937: provide a "debug" ACL control.
558 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
560 PP/12 Bugzilla 973: Implement --version.
562 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
564 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
566 PP/15 Bugzilla 816: support multiple condition rules on Routers.
568 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
569 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
570 ignore trailing whitespace.
572 JJ/02 prevent non-panic DKIM error from being sent to paniclog
574 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
577 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
578 Notification from Dr Andrew Aitchison.
580 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
581 ExtendedDetectionInfo response format.
582 Notification from John Horne.
584 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
587 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
588 XSL and documented dependency on system catalogs, with examples of how
591 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
594 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
595 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
596 configuration file which is writeable by the Exim user or group.
598 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
599 of configuration files to cover files specified with the -C option if
600 they are going to be used with root privileges, not just the default
603 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
604 option (effectively making it always true).
606 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
607 files to be used while preserving root privileges.
609 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
610 that rogue child processes cannot use them.
612 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
613 run-time user, instead of root.
615 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
616 Exim run-time user without dropping privileges.
618 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
619 result string, instead of calling string_vformat() twice with the same
622 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
623 for other users. Others should always drop root privileges if they use
624 -C on the command line, even for a whitelisted configure file.
626 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
628 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
634 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
635 $data_path, and $header_path variables; fixed documentation bugs and
638 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
639 exipick to access non-standard spools, including the "frozen" queue
642 NM/01 Bugzilla 965: Support mysql stored procedures.
643 Patch from Alain Williams
645 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
647 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
648 Patch from Andreas Metzler
650 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
651 Patch from Kirill Miazine
653 NM/05 Bugzilla 671: Added umask to procmail example.
655 JJ/03 installed exipick 20100323.0, fixing doc bug
657 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
658 directory. Notification and patch from Dan Rosenberg.
660 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
662 TK/02 Improve log output when DKIM signing operation fails.
664 MH/01 Treat the transport option dkim_domain as a colon separated
665 list, not as a single string, and sign the message with each element,
666 omitting multiple occurences of the same signer.
668 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
669 Bugzilla 985, 986. Patch by Simon Arlott
671 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
672 Patch by Simon Arlott
674 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
675 MBX locking. Notification from Dan Rosenberg.
681 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
683 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
685 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
687 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
689 NM/04 Bugzilla 915: Flag broken perl installation during build.
695 TK/01 Added patch by Johannes Berg that expands the main option
696 "spamd_address" if it starts with a dollar sign.
698 TK/02 Write list of recipients to X-Envelope-Sender header when building
699 the mbox-format spool file for content scanning (suggested by Jakob
702 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
703 (http://www.dcc-servers.net/) support via dccifd. Activated by
704 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
706 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
707 by Mark Daniel Reidel <mr@df.eu>.
709 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
710 When building exim an external PCRE library is now needed -
711 PCRE is a system library on the majority of modern systems.
712 See entry on PCRE_LIBS in EDITME file.
714 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
715 conversation. Added nologin parameter to request.
716 Patch contributed by Kirill Miazine.
718 TF/01 Do not log submission mode rewrites if they do not change the address.
720 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
722 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
723 log files in place. Contributed by Roberto Lima.
725 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
727 TF/03 Bugzilla 615: When checking the local_parts router precondition
728 after a local_part_suffix or local_part_prefix option, Exim now
729 does not use the address's named list lookup cache, since this
730 contains cached lookups for the whole local part.
732 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
733 Robert Millan. Documentation is in experimental-spec.txt.
735 TF/04 Bugzilla 668: Fix parallel build (make -j).
737 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
739 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
740 Patch provided by Jan Srzednicki.
742 TF/05 Leading white space used to be stripped from $spam_report which
743 wrecked the formatting. Now it is preserved.
745 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
746 that they are available at delivery time.
748 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
750 TF/08 TLS error reporting now respects the incoming_interface and
751 incoming_port log selectors.
753 TF/09 Produce a more useful error message if an SMTP transport's hosts
754 setting expands to an empty string.
756 NM/06 Bugzilla 744: EXPN did not work under TLS.
757 Patch provided by Phil Pennock.
759 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
760 Patch provided by Richard Godbee.
762 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
763 acl_smtp_notquit, added index entry.
765 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
766 Patch provided by Eugene Bujak.
768 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
769 accept(). Patch provided by Maxim Dounin.
771 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
772 Patch provided by Phil Pennock.
774 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
776 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
777 Patch provided by Brad "anomie" Jorsch.
779 NM/14 Bugzilla 622: Added timeout setting to transport filter.
780 Patch provided by Dean Brooks.
782 TK/05 Add native DKIM support (does not depend on external libraries).
784 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
785 Patch provided by Graeme Fowler.
787 NM/16 Bugzilla 851: Documentation example syntax fix.
789 NM/17 Changed NOTICE file to remove references to embedded PCRE.
791 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
794 NM/19 Bugzilla 745: TLS version reporting.
795 Patch provided by Phil Pennock.
797 NM/20 Bugzilla 167: bool: condition support.
798 Patch provided by Phil Pennock.
800 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
801 clients. Patch provided by Phil Pennock.
803 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
804 Patch provided by Brad "anomie" Jorsch.
806 NM/23 Bugzilla 687: Fix misparses in eximstats.
807 Patch provided by Heiko Schlittermann.
809 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
810 Patch provided by Heiko Schlittermann.
812 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
813 plus update to original patch.
815 NM/26 Bugzilla 799: Documentation correction for ratelimit.
817 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
818 Patch provided by David Brownlee.
820 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
822 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
824 NM/30 Bugzilla 888: TLS documentation bugfixes.
826 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
828 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
829 Unlike the original bugzilla I have changed all shell scripts in src tree.
831 NM/33 Bugzilla 898: Transport filter timeout fix.
832 Patch by Todd Rinaldo.
834 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
835 Patch by Serge Demonchaux.
837 NM/35 Bugzilla 39: Base64 decode bug fixes.
838 Patch by Jakob Hirsch.
840 NM/36 Bugzilla 909: Correct connect() call in dcc code.
842 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
844 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
846 NM/39 Bugzilla 911: Fixed MakeLinks build script.
852 TK/01 Add preliminary DKIM support. Currently requires a forked version of
853 ALT-N's libdkim that I have put here:
854 http://duncanthrax.net/exim-experimental/
856 Note to Michael Haardt: I had to rename some vars in sieve.c. They
857 were called 'true' and it seems that C99 defines that as a reserved
858 keyword to be used with 'bool' variable types. That means you could
859 not include C99-style headers which use bools without triggering
860 build errors in sieve.c.
862 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
863 as mailq or other aliases. Changed the --help handling significantly
864 to do whats expected. exim_usage() emits usage/help information.
866 SC/01 Added the -bylocaldomain option to eximstats.
868 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
870 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
872 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
878 PH/01 Another patch from the Sieve maintainer.
880 PH/02 When an IPv6 address is converted to a string for single-key lookup
881 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
882 dots are used instead of colons so that keys in lsearch files need not
883 contain colons. This was done some time before quoting was made available
884 in lsearch files. However, iplsearch files do require colons in IPv6 keys
885 (notated using the quote facility) so as to distinguish them from IPv4
886 keys. This meant that lookups for IP addresses in host lists did not work
887 for iplsearch lookups.
889 This has been fixed by arranging for IPv6 addresses to be expressed with
890 colons if the lookup type is iplsearch. This is not incompatible, because
891 previously such lookups could never work.
893 The situation is now rather anomolous, since one *can* have colons in
894 ordinary lsearch keys. However, making the change in all cases is
895 incompatible and would probably break a number of configurations.
897 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
900 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
901 conversion specification without a maximum field width, thereby enabling
902 a rogue spamd server to cause a buffer overflow. While nobody in their
903 right mind would setup Exim to query an untrusted spamd server, an
904 attacker that gains access to a server running spamd could potentially
905 exploit this vulnerability to run arbitrary code as the Exim user.
907 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
908 $primary_hostname instead of what libspf2 thinks the hosts name is.
910 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
911 a directory entry by the name of the lookup key. Previously, if a
912 symlink pointed to a non-existing file or a file in a directory that
913 Exim lacked permissions to read, a lookup for a key matching that
914 symlink would fail. Now it is enough that a matching directory entry
915 exists, symlink or not. (Bugzilla 503.)
917 PH/03 The body_linecount and body_zerocount variables are now exported in the
920 PH/04 Added the $dnslist_matched variable.
922 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
923 This means they are set thereafter only if the connection becomes
926 PH/06 Added the client_condition to authenticators so that some can be skipped
927 by clients under certain conditions.
929 PH/07 The error message for a badly-placed control=no_multiline_responses left
930 "_responses" off the end of the name.
932 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
934 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
935 (without spaces) instead of just copying the configuration text.
937 PH/10 Added the /noupdate option to the ratelimit ACL condition.
939 PH/11 Added $max_received_linelength.
941 PH/12 Added +ignore_defer and +include_defer to host lists.
943 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
944 way in which PCRE > 7.0 is built.
946 PH/14 Implemented queue_only_load_latch.
948 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
949 MAIL command. The effect was to mangle the value on 64-bit systems.
951 PH/16 Another patch from the Sieve maintainer.
953 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
955 PH/18 If a system quota error occurred while trying to create the file for
956 a maildir delivery, the message "Mailbox is full" was not appended to the
957 bounce if the delivery eventually timed out. Change 4.67/27 below applied
958 only to a quota excession during the actual writing of the file.
960 PH/19 It seems that peer DN values may contain newlines (and other non-printing
961 characters?) which causes problems in log lines. The DN values are now
962 passed through string_printing() before being added to log lines.
964 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
965 and InterBase are left for another time.)
967 PH/21 Added message_body_newlines option.
969 PH/22 Guard against possible overflow in moan_check_errorcopy().
971 PH/23 POSIX allows open() to be a macro; guard against that.
973 PH/24 If the recipient of an error message contained an @ in the local part
974 (suitably quoted, of course), incorrect values were put in $domain and
975 $local_part during the evaluation of errors_copy.
981 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
982 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
985 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
986 issue a MAIL command.
988 PH/02 In an ACL statement such as
990 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
992 if a client was not listed at all, or was listed with a value other than
993 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
994 the condition was not true (as it should be), so access was not denied.
995 The bug was that the ! inversion was incorrectly passed on to the second
996 item. This has been fixed.
998 PH/03 Added additional dnslists conditions == and =& which are different from
999 = and & when the dns lookup returns more than one IP address.
1001 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
1002 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
1004 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
1005 FSYNC, which compiles an option called disable_fsync that allows for
1006 bypassing fsync(). The documentation is heavily laced with warnings.
1008 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
1010 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
1011 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
1012 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
1013 including adding "make clean"; (3) Added -fPIC when compiling the test
1014 dynamically loaded module, to get rid of a warning.
1016 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
1017 message fails, move_frozen_messages = true and ignore_bounce_errors_after
1018 = 0s. The bug is otherwise harmless.
1020 PH/07 There was a bug in the dovecot authenticator such that the value of
1021 $auth1 could be overwritten, and so not correctly preserved, after a
1022 successful authentication. This usually meant that the value preserved by
1023 the server_setid option was incorrect.
1025 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
1027 PH/09 Installed PCRE release 7.0.
1029 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
1030 run for batched SMTP input. It is now run at the start of every message
1031 in the batch. While fixing this I discovered that the process information
1032 (output by running exiwhat) was not always getting set for -bs and -bS
1033 input. This is fixed, and it now also says "batched" for BSMTP.
1035 PH/11 Added control=no_pipelining.
1037 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
1038 patch, slightly modified), and move the expansion of helo_data till after
1039 the connection is made in the smtp transport (so it can use these
1042 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
1044 PH/14 Added log_selector = +pid.
1046 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
1048 PH/16 Add ${if forany and ${if forall.
1050 PH/17 Added dsn_from option to vary the From: line in DSNs.
1052 PH/18 Flush SMTP output before performing a callout, unless control =
1053 no_callout_flush is set.
1055 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
1056 was true (the default) a successful delivery failed to delete the retry
1057 item, thus causing premature timeout of the address. The bug is now
1060 PH/20 Added hosts_avoid_pipelining to the smtp transport.
1062 PH/21 Long custom messages for fakedefer and fakereject are now split up
1063 into multiline reponses in the same way that messages for "deny" and
1064 other ACL rejections are.
1066 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
1067 with slight modification.
1069 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
1070 draft, changing the syntax and factoring some duplicate code".
1072 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
1073 for deliveries of the second and subsequent messages over the same SMTP
1076 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
1077 ${reduce, with only minor "tidies".
1079 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
1081 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
1082 expansion side effects.
1084 PH/27 When a message times out after an over-quota error from an Exim-imposed
1085 quota, the bounce message says "mailbox is full". This message was not
1086 being given when it was a system quota that was exceeded. It now should
1089 MH/03 Made $recipients available in local_scan(). local_scan() already has
1090 better access to the recipient list through recipients_list[], but
1091 $recipients can be useful in postmaster-provided expansion strings.
1093 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
1094 in the case of a MAIL command with additional options following the
1095 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
1096 were accidentally chopped off.
1098 PH/29 SMTP synchronization checks are implemented when a command is read -
1099 there is a check that no more input is waiting when there shouldn't be
1100 any. However, for some commands, a delay in an ACL can mean that it is
1101 some time before the response is written. In this time, more input might
1102 arrive, invalidly. So now there are extra checks after an ACL has run for
1103 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
1104 pipelining has not been advertised.
1106 PH/30 MH's patch to allow iscntrl() characters to be list separators.
1108 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
1109 returned in the SMTP response when smtp_return_error_details was false.
1110 This has been fixed.
1112 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
1113 instead of the C I/O that was originally supplied, because problems were
1114 reported on Solaris.
1116 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
1117 Exim which did not show up earlier: it was assuming that a call to
1118 SSL_CTX_set_info_callback() might give an error value. In fact, there is
1119 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
1120 was a macro that became an assignment, so it seemed to work. This has
1121 changed to a proper function call with a void return, hence the compile
1122 error. Exim's code has been fixed.
1124 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
1127 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
1129 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
1131 PH/37 If a message is not accepted after it has had an id assigned (e.g.
1132 because it turns out to be too big or there is a timeout) there is no
1133 "Completed" line in the log. When some messages of this type were
1134 selected by exigrep, they were listed as "not completed". Others were
1135 picked up by some special patterns. I have improved the selection
1136 criteria to be more general.
1138 PH/38 The host_find_failed option in the manualroute router can now be set
1139 to "ignore", to completely ignore a host whose IP address cannot be
1140 found. If all hosts are ignored, the behaviour is controlled by the new
1141 host_all_ignored option.
1143 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
1144 homing or because of multiple MX records with /mx) generated more than
1145 one IP address, and the following item turned out to be the local host,
1146 all the secondary addresses of the first item were incorrectly removed
1147 from the list, along with the local host and any following hosts (which
1148 is what is supposed to happen).
1150 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
1151 whoever called Exim into the -H file. In the case of the daemon it was
1152 behaving confusingly. When first started, it used values for whoever
1153 started the daemon, but after a SIGHUP it used the Exim user (because it
1154 calls itself on a restart). I have changed the code so that it now always
1157 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
1158 message are rejected with the same error (e.g. no authentication or bad
1159 sender address), and a DATA command is nevertheless sent (as can happen
1160 with PIPELINING or a stupid MUA), the error message that was given to the
1161 RCPT commands is included in the rejection of the DATA command. This is
1162 intended to be helpful for MUAs that show only the final error to their
1165 PH/42 Another patch from the Sieve maintainer.
1167 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
1168 Eximstats - Fixed some broken HTML links and added missing column headers
1170 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
1171 columns for Rejects, Temp Rejects, Ham, and Spam rows.
1173 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
1175 PH/43 Yet another patch from the Sieve maintainer.
1177 PH/44 I found a way to check for a TCP/IP connection going away before sending
1178 the response to the final '.' that terminates a message, but only in the
1179 case where the client has not sent further data following the '.'
1180 (unfortunately, this is allowed). However, in many cases there won't be
1181 any further data because there won't be any more messages to send. A call
1182 to select() can be used: if it shows that the input is "ready", there is
1183 either input waiting, or the socket has been closed. An attempt to read
1184 the next input character can distinguish the two cases. Previously, Exim
1185 would have sent an OK response which the client would never have see.
1186 This could lead to message repetition. This fix should cure that, at
1187 least in a lot of common cases.
1189 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
1190 advertised in response to EHLO.
1196 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
1197 fixed by 4.65/MH/01 (is this a record?) are fixed:
1199 (i) An empty string was always treated as zero by the numeric comparison
1200 operators. This behaviour has been restored.
1202 (ii) It is documented that the numeric comparison operators always treat
1203 their arguments as decimal numbers. This was broken in that numbers
1204 starting with 0 were being interpreted as octal.
1206 While fixing these problems I realized that there was another issue that
1207 hadn't been noticed. Values of message_size_limit (both the global option
1208 and the transport option) were treated as octal if they started with 0.
1209 The documentation was vague. These values are now always treated as
1210 decimal, and I will make that clear in the documentation.
1216 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
1217 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
1220 MH/01 Don't check that the operands of numeric comparison operators are
1221 integers when their expansion is in "skipping" mode (fixes bug
1222 introduced by 4.64-PH/07).
1224 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
1225 child addresses, Exim now panics and dies. Previously, because the count
1226 is held in a short int, deliveries were likely to be lost. As such a
1227 large number of recipients for a single message is ridiculous
1228 (performance will be very, very poor), I have chosen to impose a limit
1229 rather than extend the field.
1235 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
1236 leftover -K file (the existence of which was triggered by #402).
1237 While we were at it, introduced process PID as part of the -K
1238 filename. This should rule out race conditions when creating
1241 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
1242 processing considerably. Previous code took too long for large mails,
1243 triggering a timeout which in turn triggers #401.
1245 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
1246 in the DK code in transports.c. sendfile() is not really portable,
1247 hence the _LINUX specificness.
1249 TF/01 In the add_headers option to the mail command in an Exim filter,
1250 there was a bug that Exim would claim a syntax error in any
1251 header after the first one which had an odd number of characters
1254 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
1255 callout verification, Exim cached a "reject" for the entire domain. This
1256 is correct for most verifications, but it is not correct for a recipient
1257 verification with use_sender or use_postmaster set, because in that case
1258 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
1259 case of MAIL FROM:<> rejection from other early rejections (e.g.
1260 rejection of HELO). When verifying a recipient using a non-null MAIL
1261 address, the cache is ignored if it shows MAIL FROM:<> rejection.
1262 Whatever the result of the callout, the value of the domain cache is
1263 left unchanged (for any other kind of callout, getting as far as trying
1264 RCPT means that the domain itself is ok).
1266 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
1269 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
1270 manifest itself as EPIPE rather than ECONNECT. When tidying away a
1271 session, the daemon ignores ECONNECT errors and logs others; it now
1272 ignores EPIPE as well.
1274 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
1275 (quoted-printable decoding).
1277 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
1278 later the small subsequent patch to fix an introduced bug.
1280 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
1282 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
1284 PH/08 An error is now given if message_size_limit is specified negative.
1286 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
1287 to be given (somewhat) arbitrary names.
1289 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
1292 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
1293 miscellaneous code fixes
1295 PH/10 Added the log_reject_target ACL modifier to specify where to log
1298 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
1299 hostname. This is wrong, because it relates to the incoming message (and
1300 probably the interface on which it is arriving) and not to the outgoing
1301 callout (which could be using a different interface). This has been
1302 changed to use the value of the helo_data option from the smtp transport
1303 instead - this is what is used when a message is actually being sent. If
1304 there is no remote transport (possible with a router that sets up host
1305 addresses), $smtp_active_hostname is used.
1307 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
1308 tweaks were necessary in order to get it to work (see also 21 below):
1309 (a) The code assumed that strncpy() returns a negative number on buffer
1310 overflow, which isn't the case. Replaced with Exim's string_format()
1312 (b) There were several signed/unsigned issues. I just did the minimum
1313 hacking in of casts. There is scope for a larger refactoring.
1314 (c) The code used strcasecmp() which is not a standard C function.
1315 Replaced with Exim's strcmpic() function.
1316 (d) The code set only $1; it now sets $auth1 as well.
1317 (e) A simple test gave the error "authentication client didn't specify
1318 service in request". It would seem that Dovecot has changed its
1319 interface. Fortunately there's a specification; I followed it and
1320 changed what the client sends and it appears to be working now.
1322 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
1325 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
1326 address A is aliased to B and C, where B exists and C does not. Without
1327 -v the output is "A verified" because verification stops after a
1328 successful redirection if more than one address is generated. However,
1329 with -v the child addresses are also verified. Exim was outputting "A
1330 failed to verify" and then showing the successful verification for C,
1331 with its parentage. It now outputs "B failed to verify", showing B's
1332 parentage before showing the successful verification of C.
1334 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
1335 look up a TXT record in a specific list after matching in a combined
1338 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
1339 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
1340 they consult the DNS. I had assumed they would set it the way they
1341 wanted; and indeed my experiments on Linux seem to show that in some
1342 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
1343 To be on the safe side, however, I have now made the interface to
1344 host_find_byname() similar to host_find_bydns(), with an argument
1345 containing the DNS resolver options. The host_find_byname() function now
1346 sets these options at its start, just as host_find_bydns() does. The smtp
1347 transport options dns_qualify_single and dns_search_parents are passed to
1348 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
1349 of host_find_byname() use the default settings of RES_DEFNAMES
1350 (qualify_single) but not RES_DNSRCH (search_parents).
1352 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
1353 spool_read_header() do less string testing, by means of a preliminary
1354 switch on the second character of optional "-foo" lines. (This is
1355 overdue, caused by the large number of possibilities that now exist.
1356 Originally there were few.) While I was there, I also converted the
1357 str(n)cmp tests so they don't re-test the leading "-" and the first
1358 character, in the hope this might squeeze out yet more improvement.
1360 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
1361 flag allowing group syntax was set by the header_syntax check but not
1362 turned off, possible causing trouble later; (2) The flag was not being
1363 set at all for the header_verify test, causing "group"-style headers to
1364 be rejected. I have now set it in this case, and also caused header_
1365 verify to ignore an empty address taken from a group. While doing this, I
1366 came across some other cases where the code for allowing group syntax
1367 while scanning a header line wasn't quite right (mostly, not resetting
1368 the flag correctly in the right place). These bugs could have caused
1369 trouble for malformed header lines. I hope it is now all correct.
1371 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
1372 with the "reply" argument non-NULL. The code, however (which originally
1373 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
1374 but it didn't always do it. This confused somebody who was copying the
1375 code for some other use. I have removed all the tests.
1377 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
1378 feature that was used to support insecure browsers during the U.S. crypto
1379 embargo. It requires special client support, and Exim is probably the
1380 only MTA that supported it -- and would never use it because real RSA is
1381 always available. This code has been removed, because it had the bad
1382 effect of slowing Exim down by computing (never used) parameters for the
1383 RSA_EXPORT functionality.
1385 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
1386 authenticator to fail if there's a tab character in the incoming data
1387 (there should never be unless someone is messing about, as it's supposed
1388 to be base64-encoded). Also added, on Timo's advice, the "secured" option
1389 if the connection is using TLS or if the remote IP is the same as the
1390 local IP, and the "valid-client-cert option" if a client certificate has
1393 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
1394 authenticators. This can be used for authorization after authentication
1395 succeeds. (In the case of plaintext, it servers for both authentication
1398 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
1399 if any retry times were supplied.
1401 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
1402 connection, where there is no client IP address to check. In this
1403 situation, the verify now always succeeds.
1405 PH/25 Applied John Jetmore's -Mset patch.
1407 PH/26 Added -bem to be like -Mset, but loading a message from a file.
1409 PH/27 In a string expansion for a processed (not raw) header when multiple
1410 headers of the same name were present, leading whitespace was being
1411 removed from all of them, but trailing whitespace was being removed only
1412 from the last one. Now trailing whitespace is removed from each header
1413 before concatenation. Completely empty headers in a concatenation (as
1414 before) are ignored.
1416 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
1417 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
1419 PH/29 [Removed. This was a change that I later backed out, and forgot to
1420 correct the ChangeLog entry (that I had efficiently created) before
1421 committing the later change.]
1423 PH/30 Exim was sometimes attempting to deliver messages that had suffered
1424 address errors (4xx response to RCPT) over the same connection as other
1425 messages routed to the same hosts. Such deliveries are always "forced",
1426 so retry times are not inspected. This resulted in far too many retries
1427 for the affected addresses. The effect occurred only when there were more
1428 hosts than the hosts_max_try setting in the smtp transport when it had
1429 the 4xx errors. Those hosts that it had tried were not added to the list
1430 of hosts for which the message was waiting, so if all were tried, there
1431 was no problem. Two fixes have been applied:
1433 (i) If there are any address or message errors in an SMTP delivery, none
1434 of the hosts (tried or untried) are now added to the list of hosts
1435 for which the message is waiting, so the message should not be a
1436 candidate for sending over the same connection that was used for a
1437 successful delivery of some other message. This seems entirely
1438 reasonable: after all the message is NOT "waiting for some host".
1439 This is so "obvious" that I'm not sure why it wasn't done
1440 previously. Hope I haven't missed anything, but it can't do any
1441 harm, as the worst effect is to miss an optimization.
1443 (ii) If, despite (i), such a delivery is accidentally attempted, the
1444 routing retry time is respected, so at least it doesn't keep
1445 hammering the server.
1447 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
1448 in ${readsocket because some servers need this prod.
1450 PH/32 Added some extra debug output when updating a wait-xxx database.
1452 PH/33 The hint "could be header name not terminated by colon", which has been
1453 given for certain expansion errors for a long time, was not being given
1454 for the ${if def:h_colon_omitted{... case.
1456 PH/34 The spec says: "With one important exception, whenever a domain list is
1457 being scanned, $domain contains the subject domain." There was at least
1458 one case where this was not true.
1460 PH/35 The error "getsockname() failed: connection reset by peer" was being
1461 written to the panic log as well as the main log, but it isn't really
1462 panic-worthy as it just means the connection died rather early on. I have
1463 removed the panic log writing for the ECONNRESET error when getsockname()
1466 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
1467 runs only) independently of the message's sender address. This meant
1468 that, if the 4xx error was in fact related to the sender, a different
1469 message to the same recipient with a different sender could confuse
1470 things. In particualar, this can happen when sending to a greylisting
1471 server, but other circumstances could also provoke similar problems.
1472 I have changed the default so that the retry time for these errors is now
1473 based a combination of the sender and recipient addresses. This change
1474 can be overridden by setting address_retry_include_sender=false in the
1477 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
1478 remote server are returned as part of bounce messages. This was not
1479 happening for LMTP over a pipe (the lmtp transport), but now it is the
1480 same for both kinds of LMTP.
1482 PH/38 Despite being documented as not happening, Exim was rewriting addresses
1483 in header lines that were in fact CNAMEs. This is no longer the case.
1485 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
1486 and queue runs started by the daemon processed all messages. This has
1487 been fixed so that -R and -S can now usefully be given with -q<time>.
1489 PH/40 Import PCRE release 6.7 (fixes some bugs).
1491 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
1493 PH/42 Give an error if -q is specified more than once.
1495 PH/43 Renamed the variables $interface_address and $interface_port as
1496 $received_ip_address and $received_port, to make it clear that these
1497 values apply to message reception, and not to the outgoing interface when
1498 a message is delivered. (The old names remain recognized, of course.)
1500 PH/44 There was no timeout on the connect() call when using a Unix domain
1501 socket in the ${readsocket expansion. There now is.
1503 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
1504 be meaningful with "accept".
1506 SC/01 Eximstats V1.43
1507 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
1509 SC/02 Eximstats V1.44
1510 Use a glob alias rather than an array ref in the generated
1511 parser. This improves both readability and performance.
1513 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
1514 Collect SpamAssassin and rejection statistics.
1515 Don't display local sender or destination tables unless
1516 there is data to show.
1517 Added average volumes into the top table text output.
1519 SC/04 Eximstats V1.46
1520 Collect data on the number of addresses (recipients)
1521 as well as the number of messages.
1523 SC/05 Eximstats V1.47
1524 Added 'Message too big' to the list of mail rejection
1525 reasons (thanks to Marco Gaiarin).
1527 SC/06 Eximstats V1.48
1528 Mainlog lines which have GMT offsets and are too short to
1529 have a flag are now skipped.
1531 SC/07 Eximstats V1.49 (Alain Williams)
1532 Added the -emptyok flag.
1534 SC/08 Eximstats V1.50
1535 Fixes for obtaining the IP address from reject messages.
1537 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
1538 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
1539 whitesspace changes from 4.64-PH/27
1541 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
1544 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
1545 are found, allow negative numbers in numeric criteria)
1547 JJ/06 exipick.20061117.2, added new $message_body_missing variable
1549 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
1550 to match changes made in 4.64-PH/43
1552 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
1554 PH/47 Put in an explicit test for a DNS lookup of an address record where the
1555 "domain" is actually an IP address, and force a failure. This locks out
1556 those revolvers/nameservers that support "A-for-A" lookups, in
1557 contravention of the specifications.
1559 PH/48 When a host name was looked up from an IP address, and the subsequent
1560 forward lookup of the name timed out, the host name was left in
1561 $sender_host_name, contrary to the specification.
1563 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
1564 restricted to single-key lookups, Exim was not diagnosing an error if
1565 * or *@ was used with a query-style lookup.
1567 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
1569 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
1570 long ago, but noone interested enough thought of it. Let's just say that
1571 the "1.1" means that there are some new functions that weren't there at
1572 some point in the past.
1574 PH/51 Error processing for expansion failure of helo_data from an smtp
1575 transport during callout processing was broken.
1577 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
1578 tested/used via the -bh/-bhc/-bs options.
1580 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
1581 bug, fixed in subsequent PCRE releases).
1583 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
1584 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
1586 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
1592 SC/01 Use a glob alias rather than an array ref in eximstats generated
1593 parser. This improves both readability and performance.
1595 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
1596 Don't display local sender or destination tables in eximstats unless
1597 there is data to show.
1598 Added average volumes into the eximstats top table text output.
1600 SC/03 Collect data on the number of addresses (recipients) as well
1601 as the number of messages in eximstats.
1603 TF/01 Correct an error in the documentation for the redirect router. Exim
1604 does (usually) call initgroups() when daemonizing.
1606 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
1607 with consistent privilege compared to when running as a daemon.
1609 TF/03 Note in the spec that $authenticated_id is not set for local
1610 submissions from trusted users.
1612 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
1613 Thanks to Dean Brooks <dean@iglou.com> for the patch.
1615 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
1616 by adding some example configuration directives to the default
1617 configuration file. A little bit of work is required to uncomment the
1618 directives and define how usernames and passwords are checked, but
1619 there is now a framework to start from.
1621 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
1622 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
1623 without this. I don't know how relevant this is to other LDAP libraries.
1625 PH/02 Add the verb name to the "unknown ACL verb" error.
1627 PH/03 Magnus Holmgren's patch for filter_prepend_home.
1629 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
1631 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
1632 directory not expanded when it should be if an expanded home directory
1633 was set for the address (which is overridden by the transport).
1635 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
1638 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
1639 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
1640 because it is too late at that time, and has no effect.
1642 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
1643 security issue with \' (bugzilla #107). I could not use the
1644 PQescapeStringConn() function, because it needs a PGconn value as one of
1647 PH/08 When testing addresses using -bt, indicate those final addresses that
1648 are duplicates that would not cause an additional delivery. At least one
1649 person was confused, thinking that -bt output corresponded to deliveries.
1650 (Suppressing duplicates isn't a good idea as you lose the information
1651 about possibly different redirections that led to the duplicates.)
1653 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
1654 systems where poll() doesn't work, in particular OS X.
1656 PH/10 Added more information to debugging output for retry time not reached.
1658 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
1659 operations in malware.c.
1661 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
1664 PH/13 If write_rejectlog was set false when logging was sent to syslog with
1665 syslog_duplication set false, log lines that would normally be written
1666 both the the main log and to the reject log were not written to syslog at
1669 PH/14 In the default configuration, change the use of "message" in ACL warn
1670 statements to "add_header".
1672 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
1673 not followed by a command (e.g. "seen endif").
1675 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
1676 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
1679 PH/17 Added extra conditions to the default value of delay_warning_condition
1683 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
1684 { match{$h_precedence:}{(?i)bulk|list|junk} } \
1685 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
1688 The Auto-Submitted: and various List- headers are standardised, whereas I
1689 don't think Precedence: ever was.
1691 PH/18 Refactored debugging code in route_finduser() to show more information,
1692 in particular, the error code if getpwnam() issues one.
1694 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
1695 This is apparently needed in addition to the PH/07 change above to avoid
1696 any possible encoding problems.
1698 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
1699 but not after initializing Perl.
1701 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
1702 output them only if debugging. By default they are written stderr,
1703 apparently, which is not desirable.
1705 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
1708 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
1711 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
1713 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
1714 authenticated or an ident call has been made. Suppress the default
1715 values for $authenticated_id and $authenticated_sender (but permit -oMai
1716 and -oMas) when testing with -bh.
1718 PH/24 Re-jigged the order of the tests in the default configuration so that the
1719 tests for valid domains and recipients precede the DNS black list and CSA
1720 tests, on the grounds that those ones are more expensive.
1722 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
1723 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
1724 This bug exists in every version of Exim that I still have, right back to
1727 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
1728 However, an attempt to turn on case-sensitivity in a regex key by
1729 including (?-i) didn't work because the subject string was already
1730 lowercased, and the effects were non-intuitive. It turns out that a
1731 one-line patch can be used to allow (?-i) to work as expected.
1737 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
1738 other effects) broke the use of negated acl sub-conditions.
1740 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
1743 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
1744 "Deny" causes Exim to reject the incoming connection with a 554 error.
1745 Unfortunately, if there is a major crisis, such as a disk failure,
1746 tcp-wrappers gives "deny", whereas what one would like would be some
1747 kind of temporary error. A kludge has been added to help with this.
1748 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
1749 554 error is used if errno is still zero or contains ENOENT (which occurs
1750 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
1753 PH/03 Add -lutil to the default FreeBSD LIBS setting.
1755 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
1756 errors. Otherwise a message that provokes a temporary error (when other
1757 messages do not) can cause a whole host to time out.
1759 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
1760 addresses were routed directly to files or pipes from a redirect router.
1761 File deliveries just didn't batch; pipe deliveries might have suffered
1764 PH/06 A failure to get a lock for a hints database would erroneously always say
1765 "Failed to get write lock", even when it was really a read lock.
1767 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
1768 of 0600. This has been changed to use the value of the lockfile_mode
1769 option (which defaults to 0600).
1771 PH/08 Applied small patch from the Sieve maintainer.
1773 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
1774 folder from quota calculations, a direct delivery into this folder messed
1775 up the contents of the maildirsize file. This was because the regex was
1776 used only to exclude .Trash (or whatever) when the size of the mailbox
1777 was calculated. There was no check that a delivery was happening into an
1778 excluded directory. This bug has been fixed by ignoring all quota
1779 processing for deliveries into excluded directories.
1781 PH/10 Added the maildirfolder_create_regex option to appendfile.
1787 PH/01 The code for finding all the local interface addresses on a FreeBSD
1788 system running IPv6 was broken. This may well have applied to all BSD
1789 systems, as well as to others that have similar system calls. The broken
1790 code found IPv4 interfaces correctly, but gave incorrect values for the
1791 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
1792 that it would not match correctly against @[] and not recognize the IPv6
1795 PH/02 The ipliteral router was not recognizing addresses of the form user@
1796 [ipv6:....] because it didn't know about the "ipv6:" prefix.
1798 PH/03 Added disable_ipv6.
1800 PH/04 Changed $reply_address to use the raw form of the headers instead of the
1801 decoded form, because it is most often used to construct To: headers
1802 lines in autoreplies, and the decoded form may well be syntactically
1803 invalid. However, $reply_address has leading white space removed, and all
1804 newlines turned into spaces so that the autoreply transport does not
1807 PH/05 If group was specified without a user on a router, and no group or user
1808 was specified on a transport, the group from the router was ignored.
1810 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
1811 for visible compile-time settings that can be used to change these
1812 numbers, for those that want even more. Backwards compatibility with old
1813 spool files has been maintained. However, going back to a previous Exim
1814 release will lost any variables that are in spool files.
1816 PH/07 Two small changes when running in the test harness: increase delay when
1817 passing a TCP/IP connection to a new process, in case the original
1818 process has to generate a bounce, and remove special handling of
1819 127.0.0.2 (sic), which is no longer necessary.
1821 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
1822 be the same on different OS.
1824 PH/09 Moved a debug statement in filter processing to avoid a race problem when
1827 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
1828 whether --show-vars was specified or not
1830 JJ/02 exipick: Added support for new ACL variable spool format introduced
1833 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
1834 syntactically invalid From: or Reply-to: line, and a filter used this to
1835 generate an autoreply, and therefore failed to obtain an address for the
1836 autoreply, Exim could try to deliver to a non-existent relative file
1837 name, causing unrelated and misleading errors. What now happens is that
1838 it logs this as a hard delivery error, but does not attempt to create a
1841 PH/11 The exinext utility has a -C option for testing purposes, but although
1842 the given file was scanned by exinext itself; it wasn't being passed on
1843 when Exim was called.
1845 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
1846 an end-of-file indication when reading a command response.
1848 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
1849 compiled. In many other places in Exim, IPv6 addresses are always
1850 recognized, so I have changed this. It also means that IPv4 domain
1851 literals of the form [IPV4:n.n.n.n] are now always recognized.
1853 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
1854 used if the router is not running as root, for example, when verifying at
1855 ACL time, or when using -bh. The debugging output from this situation was
1856 non-existent - all you got was a failure to exec. I have made two
1859 (a) Failures to set uid/gid, the current directory, or a process leader
1860 in a subprocess such as that created by queryprogram now generate
1861 suitable debugging ouput when -d is set.
1863 (b) The queryprogram router detects when it is not running as root,
1864 outputs suitable debugging information if -d is set, and then runs
1865 the subprocess without attempting to change uid/gid.
1867 PH/15 Minor change to Makefile for building test_host (undocumented testing
1870 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
1871 additional section of a DNS packet that returns MX or SRV records.
1872 Instead, it always explicitly searches for A/AAAA records. This avoids
1873 major problems that occur when a DNS server includes only records of one
1874 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
1875 fixed another bug: if SRV records were looked up and the corresponding
1876 address records were *not* found in the additional section, the port
1877 values from the SRV records were lost.
1879 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
1880 using the correct key (the original address) when searching the retry
1881 rules in order to find which one to use for generating the retry hint.
1883 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
1884 adding the default one. Similarly, if it contains a Reply-To: header, the
1885 errors_reply_to option, if set, is not used.
1887 PH/19 When calculating a retry time, Exim used to measure the "time since
1888 failure" by looking at the "first failed" field in the retry record. Now
1889 it does not use this if it is later than than the arrival time of the
1890 message. Instead it uses the arrival time. This makes for better
1891 behaviour in cases where some deliveries succeed, thus re-setting the
1892 "first failed" field. An example is a quota failure for a huge message
1893 when small messages continue to be delivered. Without this change, the
1894 "time since failure" will always be short, possible causing more frequent
1895 delivery attempts for the huge message than are intended.
1896 [Note: This change was subsequently modified - see PH/04 for 4.62.]
1898 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
1899 $1, $2, $3) because the numerical variables can be reset during some
1900 expansion items (e.g. "match"), thereby losing the authentication data.
1902 PH/21 Make -bV show the size of off_t variables so that the test suite can
1903 decide whether to run tests for quotas > 2G.
1905 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
1906 mailbox_size, and mailbox_filecount in the appendfile transport. If a
1907 filecount value is greater than 2G or if a quota value is greater than 2G
1908 on a system where the size of off_t is not greater than 4, a panic error
1911 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
1912 never match. The debug and -bh output now contains an explicit error
1913 message indicating a malformed IPv4 address or mask.
1915 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
1916 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
1917 PH/23 above applies.
1919 PH/25 Do not write to syslog when running in the test harness. The only
1920 occasion when this arises is a failure to open the main or panic logs
1921 (for which there is an explicit test).
1923 PH/26 Added the /no_tell option to "control=freeze".
1925 PH/27 If a host name lookup failed very early in a connection, for example, if
1926 the IP address matched host_lookup and the reverse lookup yielded a name
1927 that did not have a forward lookup, an error message of the form "no IP
1928 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
1929 could be logged. Now it outputs the IP address instead of "NULL".
1931 PH/28 An enabling patch from MH: add new function child_open_exim2() which
1932 allows the sender and the authenticated sender to be set when
1933 submitting a message from within Exim. Since child_open_exim() is
1934 documented for local_scan(), the new function should be too.
1936 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
1937 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
1938 results in an empty string is now treated as unset.
1940 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
1942 PH/31 Added sender_verify_fail logging option.
1944 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
1945 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1946 tidied the source and removed it altogether.
1948 PH/33 When a queue run was abandoned because the load average was too high, a
1949 log line was always written; now it is written only if the queue_run log
1950 selector is set. In addition, the log line for abandonment now contains
1951 information about the queue run such as the pid. This is always present
1952 in "start" and "stop" lines but was omitted from the "abandon" line.
1954 PH/34 Omit spaces between a header name and the colon in the error message that
1955 is given when verify = headers_syntax fails (if there are lots of them,
1956 the message gets confusing).
1958 PH/35 Change the default for dns_check_names_pattern to allow slashes within
1959 names, as there are now some PTR records that contain slashes. This check
1960 is only to protect against broken name servers that fall over on strange
1961 characters, so the fact that it applies to all lookups doesn't matter.
1963 PH/36 Now that the new test suite is complete, we can remove some of the
1964 special code in Exim that was needed for the old test suite. For example,
1965 sorting DNS records because real resolvers return them in an arbitrary
1966 order. The new test suite's fake resolver always returns records in the
1969 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1970 bounces) except when queue_only is set, to avoid logging races between
1971 the different processes.
1973 PH/38 Panic-die if .include specifies a non-absolute path.
1975 PH/39 A tweak to the "H" retry rule from its user.
1977 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1978 a label. They prevented compilation on older perls.
1980 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1981 a warning to be raised on newish perls.
1983 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1984 on queue. Changes to match documented behaviour of showing count of
1985 messages matching specified criteria.
1987 PH/40 Changed the default ident timeout from 30s to 5s.
1989 PH/41 Added support for the use of login_cap features, on those BSD systems
1990 that have them, for controlling the resources used by pipe deliveries.
1992 PH/42 The content-scanning code uses fopen() to create files in which to put
1993 message data. Previously it was not paying any attention to the mode of
1994 the files. Exim runs with umask(0) because the rest of the code creates
1995 files with open(), and sets the required mode explicitly. Thus, these
1996 files were ending up world-writeable. This was not a big issue, because,
1997 being within the spool directory, they were not world-accessible. I have
1998 created a function called modefopen, which takes an additional mode
1999 argument. It sets umask(777), creates the file, chmods it to the required
2000 mode, then resets the umask. All the relevant calls to fopen() in the
2001 content scanning code have been changed to use this function.
2003 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
2004 to 24 hours. This avoids potential overflow problems when processing G
2005 and H retry rules. I suspect nobody ever tinkers with this value.
2007 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
2009 PH/45 When the plaintext authenticator is running as a client, the server's
2010 challenges are checked to ensure they are valid base64 strings. By
2011 default, the authentication attempt is cancelled if an invalid string is
2012 received. Setting client_ignore_invalid_base64 true ignores these errors.
2013 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
2014 they are received. Thus, the responses can be made to depend on the
2015 challenges. If an invalid string is ignored, an empty string is placed in
2018 PH/46 Messages that are created by the autoreply transport now contains a
2019 References: header, in accordance with RFCs 2822 and 3834.
2021 PH/47 Added authenticated_sender_force to the smtp transport.
2023 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
2025 PH/49 Installed latest patch from the Sieve maintainer.
2027 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
2028 was also set, the appendfile transport was unnecessarily scanning a
2029 directory of message files (e.g. for maildir delivery) to find the count
2030 of files (along with the size), even though it did not need this
2031 information. It now does the scan only if it needs to find either the
2032 size of the count of files.
2034 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
2036 PH/52 Two bugs concerned with error handling when the smtp transport is
2039 (i) Exim was not creating retry information for temporary errors given
2040 for individual recipients after the DATA command when the smtp transport
2041 was used in LMTP mode. This meant that they could be retried too
2042 frequently, and not timed out correctly.
2044 (ii) Exim was setting the flag that allows error details to be returned
2045 for LMTP errors on RCPT commands, but not for LMTP errors for individual
2046 recipients that were returned after the DATA command.
2048 PH/53 This is related to PH/52, but is more general: for any failing address,
2049 when detailed error information was permitted to be returned to the
2050 sender, but the error was temporary, then after the final timeout, only
2051 "retry timeout exceeded" was returned. Now it returns the full error as
2052 well as "retry timeout exceeded".
2054 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
2055 do this, and (what is worse) MTAs that accept it.
2057 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
2058 will now be deprecated.
2060 PH/56 New os.c-cygwin from the Cygwin maintainer.
2062 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
2063 formats (previously only available in exim formats via -bpr, -bpru,
2064 and -bpra. Now also available in native and exiqgrep formats)
2066 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
2067 with very large, slow to parse queues
2069 JJ/08 exipick: added ! as generic prefix to negate any criteria format
2071 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
2073 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
2074 responses to authentication challenges, though it was showing the
2075 challenges; (ii) I've removed the CR characters from the debug output for
2078 PH/58 Allow for the insertion of a newline as well as a space when a string
2079 is turned into more than one encoded-word during RFC 2047 encoding. The
2080 Sieve code now uses this.
2082 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
2083 data_4xx, lost_connection, tls_required.
2085 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
2086 message was being sent as an SMTP response.
2088 PH/61 Add -l and -k options to exicyclog.
2090 PH/62 When verifying, if an address was redirected to one new address, so that
2091 verification continued, and the new address failed or deferred after
2092 having set something in $address_data, the value of $address_data was not
2093 passed back to the ACL. This was different to the case when no
2094 redirection occurred. The value is now passed back in both cases.
2096 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
2097 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
2098 use login_cap.h, so on its own it isn't the distinguishing feature. The
2099 new name refers directly to the setclassresources() function.
2101 PH/65 Added configuration files for NetBSD3.
2103 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
2105 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
2106 is preferred over IPv4.
2108 PH/68 The bounce_return_message and bounce_return_body options were not being
2109 honoured for bounces generated during the reception of non-SMTP messages.
2110 In particular, this applied to messages rejected by the ACL. This bug has
2111 been fixed. However, if bounce_return_message is true and bounce_return_
2112 body is false, the headers that are returned for a non-SMTP message
2113 include only those that have been read before the error was detected.
2114 (In the case of an ACL rejection, they have all been read.)
2116 PH/69 The HTML version of the specification is now built in a directory called
2117 spec_html instead of spec.html, because the latter looks like a path with
2118 a MIME-type, and this confuses some software.
2120 PH/70 Catch two compiler warnings in sieve.c.
2122 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
2123 function verify_get_ident() calls ip_connect() to connect a socket, but
2124 if the "connect()" function timed out, ip_connect() used to close the
2125 socket. However, verify_get_ident() also closes the socket later, and in
2126 between Exim writes to the log, which may get opened at this point. When
2127 the socket was closed in ip_connect(), the log could get the same file
2128 descriptor number as the socket. This naturally causes chaos. The fix is
2129 not to close the socket in ip_connect(); the socket should be closed by
2130 the function that creates it. There was only one place in the code where
2131 this was missing, in the iplookup router, which I don't think anybody now
2132 uses, but I've fixed it anyway.
2134 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
2135 well as to direct DNS lookups. Otherwise the handling of names in host
2136 lists is inconsistent and therefore confusing.
2142 PH/01 Two changes to the default runtime configuration:
2144 (1) Move the checks for relay_from_hosts and authenticated clients from
2145 after to before the (commented out) DNS black list checks.
2147 (2) Add control=submission to the relay_from_hosts and authenticated
2148 clients checks, on the grounds that messages accepted by these
2149 statements are most likely to be submissions.
2151 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
2153 (1) Generate an error if the third argument for the ${prvs expansion is
2156 (2) Treat a missing third argument of ${prvscheck as if it were an empty
2159 (3) Reset the variables that are obtained from the first argument of
2160 ${prvscheck and used in the second argument before leaving the code,
2161 because their memory is reclaimed, so using them afterwards may do
2164 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
2165 one (it's much easier than Tom thought :-).
2167 (5) Because of (4), we can now allow for the use of $prvscheck_result
2168 inside the third argument.
2170 PH/03 For some reason, the default setting of PATH when running a command from
2171 a pipe transport was just "/usr/bin". I have changed it to
2174 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
2175 anything to be listed in the output from -bV.
2177 PH/05 When a filter generated an autoreply, the entire To: header line was
2178 quoted in the delivery log line, like this:
2180 => >A.N.Other <ano@some.domain> <original@ddress> ...
2182 This has been changed so that it extracts the operative address. There
2183 may be more than one such address. If so, they are comma-separated, like
2186 => >ano@some.domain,ona@other.domain <original@ddress> ...
2188 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
2189 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
2190 not being looked up in the rDNS to get a host name, Exim was showing the
2191 IP address twice in Received: lines, even though the IP addresses were
2192 identical. For example:
2194 Received: from [1.2.3.4] (helo=[1.2.3.4])
2196 However, if the real host name was known, it was omitting the HELO data
2197 if it matched the actual IP address. This has been tidied up so that it
2198 doesn't show the same IP address twice.
2200 PH/07 When both +timestamp and +memory debugging was on, the value given by
2201 $tod_xxx expansions could be wrong, because the tod_stamp() function was
2202 called by the debug printing, thereby overwriting the timestamp buffer.
2203 Debugging no longer uses the tod_stamp() function when +timestamp is set.
2205 PH/08 When the original message was included in an autoreply transport, it
2206 always said "this is a copy of the message, including all the headers",
2207 even if body_only or headers_only was set. It now gives an appropriate
2210 PH/09 Applied a patch from the Sieve maintainer which:
2212 o fixes some comments
2213 o adds the (disabled) notify extension core
2214 o adds some debug output for the result of if/elsif tests
2215 o points to the current vacation draft in the documentation
2216 and documents the missing references header update
2220 o fixes a bug in processing the envelope test (when testing
2221 multiple envelope elements, the last element determinted the
2224 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
2225 Electronic Mail") by including:
2227 Auto-submitted: auto-generated
2229 in the messages that it generates (bounce messages and others, such as
2230 warnings). In the case of bounce messages for non-SMTP mesages, there was
2231 also a typo: it was using "Auto_submitted" (underscore instead of
2232 hyphen). Since every message generated by Exim is necessarily in response
2233 to another message, thes have all been changed to:
2235 Auto-Submitted: auto-replied
2237 in accordance with these statements in the RFC:
2239 The auto-replied keyword:
2241 - SHOULD be used on messages sent in direct response to another
2242 message by an automatic process,
2244 - MUST NOT be used on manually-generated messages,
2246 - MAY be used on Delivery Status Notifications (DSNs) and Message
2247 Disposition Notifications (MDNs),
2249 - MUST NOT be used on messages generated by automatic or periodic
2250 processes, except for messages which are automatic responses to
2253 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
2254 to the default Received: header definition.
2256 PH/12 Added log selector acl_warn_skipped (default on).
2258 PH/13 After a successful wildlsearch lookup, discard the values of numeric
2259 variables because (a) they are in the wrong storage pool and (b) even if
2260 they were copied, it wouldn't work properly because of the caching.
2262 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
2263 checking when decoding. Apparently there are clients that generate
2264 overlong encoded strings. Why am I not surprised?
2266 PH/15 If the first argument of "${if match_address" was not empty, but did not
2267 contain an "@" character, Exim crashed. Now it writes a panic log message
2268 and treats the condition as false.
2270 PH/16 In autoreply, treat an empty string for "once" the same as unset.
2272 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
2273 extension "envelope-auth". The code is finished and in agreement with
2274 other implementations, but there is no documentation so far and in fact,
2275 nobody wrote the draft yet. This extension is currently #undef'ed, thus
2276 not changing the active code.
2278 Print executed "if" and "elsif" statements when debugging is used. This
2279 helps a great deal to understand what a filter does.
2281 Document more things not specified clearly in RFC3028. I had all this
2282 sorted out, when out of a sudden new issues came to my mind. Oops."
2284 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
2287 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
2288 canonical form (as documented). However, after a host name lookup from
2289 the IP address, check_host() was doing a simple string comparison with
2290 addresses acquired from the DNS when checking that the found name did
2291 have the original IP as one of its addresses. Since any found IPv6
2292 addresses are likely to be in abbreviated form, the comparison could
2293 fail. Luckily, there already exists a function for doing the comparison
2294 by converting both addresses to binary, so now that is used instead of
2295 the text comparison.
2297 PH/20 There was another similar case to PH/19, when a complete host name was
2298 given in a host list; looking up its IP address could give an abbreviated
2299 form, whereas the current host's name might or might not be abbreviated.
2300 The same fix has been applied.
2306 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
2307 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
2310 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
2311 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
2313 PH/03 Typo: missing ".o" in src/pcre/Makefile.
2315 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
2316 header line, restrict the check to what is listed in RFCs 2369 and 2929.
2317 Also, for "Auto-Submitted", treat anything other than "no" as
2318 non-personal, in accordance with RFC 3834. (Previously it treated
2319 anything starting "auto-" as non-personal.)
2321 TF/01 The control=submission/name=... option had a problem with syntax
2322 errors if the name included a slash character. The /name= option
2323 now slurps the rest of the string, so it can include any characters
2324 but it must come last in the list of options (after /sender_retain
2327 PH/05 Some modifications to the interface to the fake nameserver for the new
2335 TK/01 Added the "success_on_redirect" address verification option. See
2336 NewStuff for rationale and an example.
2338 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
2340 PH/02 Patch to exigrep to allow it to work on syslog lines.
2342 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
2343 fread() to skip over the body file's header line, because in Cygwin the
2344 header line is locked and is inaccessible.
2346 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
2347 co-exist for some time) to make it clear that it is the Exim ID that is
2348 referenced, not the Message-ID: header line.
2350 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
2351 string_format() function, because snprintf() does not exist on all
2354 PH/06 The use of forbid_filter_existstest now also locks out the use of the
2355 ${stat: expansion item.
2357 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
2358 protocol synchronization error", to keep the pedants happy.
2360 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
2361 well as for IRIX systems, when gcc is being used. See the host.c source
2364 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
2366 PH/10 Named domain lists were not working if used in a queue_smtp_domains
2369 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
2370 transport and to the smtp transport in LMTP mode.
2372 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
2374 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
2375 run a filter in a subprocess. This could lead to confusion in subsequent
2376 lookups in the parent process. There should also be a search_tidyup() at
2377 the end of the subprocess.
2379 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
2380 only if the host matched helo_try_verify_hosts, which caused the
2381 verification to occur when the EHLO/HELO command was issued. The ACL just
2382 tested the remembered result. Now, if a previous verification attempt has
2383 not happened, "verify = helo" does it there and then.
2385 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
2387 TK/03 Fix log output including CR from clamd.
2389 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
2390 exist provoked a memory error which could cause a segfault.
2392 PH/15 Installed PCRE 6.2
2394 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
2396 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
2397 of the problem. Specifically, suggested +O2 rather than +O1 for the
2400 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
2402 PH/20 If a delivery was routed to a non-standard port by means of an SRV
2403 record, the port was not correctly logged when the outgoing_port log
2404 selector was set (it logged the transort's default port).
2406 PH/21 Added support for host-specific ports to manualroute, queryprogram,
2407 fallback_hosts, and "hosts" in the smtp transport.
2409 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
2410 host errors such as "Connection refused".
2412 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
2413 authentication with radiusclient 0.4.9:
2415 - Error returned from rc_read_config was caught wrongly
2416 - Username/password not passed on to radius server due to wrong length.
2418 The presumption is that some radiusclient API changes for 4.51/PH/17
2419 were not taken care of correctly. The code is still untested by me (my
2420 Linux distribution still has 0.3.2 of radiusclient), but it was
2421 contributed by a Radius user.
2423 PH/24 When doing a callout, the value of $domain wasn't set correctly when
2424 expanding the "port" option of the smtp transport.
2426 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
2427 while reading a MIME header. Thanks to Tom Hughes for a patch.
2429 PH/24 Include config.h inside local_scan.h so that configuration settings are
2432 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
2433 that in an ACL for RCPT (for example), you can examine exactly what was
2436 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
2437 commands, but it was not correctly comparing the address with the actual
2438 client host address. Thus, it would show the EHLO address in Received:
2439 header lines when this was not necessary.
2441 PH/27 Added the % operator to ${eval:}.
2443 PH/28 Exim tries to create and chdir to its spool directory when it starts;
2444 it should be ignoring failures (because with -C, for example, it has lost
2445 privilege). It wasn't ignoring creation failures other than "already
2448 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
2451 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
2452 because an input line was too long, either on its own, or by virtue of
2453 too many continuations, the temporary file was not being removed, and the
2454 return code was incorrect.
2456 PH/31 Missing "BOOL" in function definition in filtertest.c.
2458 PH/32 Applied Sieve patches from the maintainer.
2460 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
2462 PH/33 Added "verify = not_blind".
2464 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
2465 Local/Makefile (with some defaults set). These are used in built scripts
2466 such as exicyclog, but they have never been used in the exim_install
2467 script (though there are many overriding facilities there). I have
2468 arranged that the exim_install script now takes note of these two
2471 PH/35 Installed configuration files for Dragonfly.
2473 PH/36 When a locally submitted message by a trusted user did not contain a
2474 From: header, and the sender address was obtained from -f or from an SMTP
2475 MAIL command, and the trusted user did not use -F to supply a sender
2476 name, $originator_name was incorrectly used when constructing a From:
2477 header. Furthermore, $originator_name was used for submission mode
2478 messages from external hosts without From: headers in a similar way,
2479 which is clearly wrong.
2481 PH/37 Added control=suppress_local_fixups.
2483 PH/38 When log_selector = +received_sender was set, and the addition of the
2484 sender made the log line's construction buffer exactly full, or one byte
2485 less than full, an overflow happened when the terminating "\n" was
2488 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
2489 when the result of a list match is failure because a DNS lookup failed.
2491 PH/40 RM_COMMAND is now used in the building process.
2493 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
2494 the "build-* directories that it finds.
2496 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
2497 address in a domain literal was a prefix of an interface address.
2499 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
2500 when verifying a sender address, unless rewrite_headers is false.
2502 PH/44 Wrote a long comment about why errors_to addresses are verified as
2503 recipients, not senders.
2505 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
2506 the ratelimit ACL was added.
2508 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
2510 PH/46 Added extra information about PostgreSQL errors to the error string.
2512 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
2513 avoiding the need to install special zones in a real server. This is
2514 backwards compatible; if it can't find the fake resolver, it drops back.
2515 Thus, both old and new test suites can be run.
2517 TF/02 Added util/ratelimit.pl
2519 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
2520 clock is set back in time.
2522 TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
2523 Candler <B.Candler@pobox.com>.
2525 TF/05 The fix for PH/43 was not completely correct; widen_domains is always
2526 OK for addresses that are the result of redirections.
2528 PH/48 A number of further additions for the benefit of the new test suite,
2529 including a fake gethostbyname() that interfaces to the fake DNS resolver
2532 TF/06 The fix for widen_domains has also been applied to qualify_single and
2533 search_parents which are the other dnslookup options that can cause
2536 PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
2539 PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
2541 TF/07 Exim produced the error message "an SRV record indicated no SMTP
2542 service" if it encountered an MX record with an empty target hostname.
2543 The message is now "an MX or SRV record indicated no SMTP service".
2545 TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
2546 if the DNS of the sending site is misconfigured. This is quite a
2547 common situation. This change restores the behaviour of treating a
2548 helo verification defer as a failure.
2550 PH/51 If self=fail was set on a router, the bounce message did not include the
2551 actual error message.
2557 TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
2559 PH/01 When a transport filter timed out in a pipe delivery, and the pipe
2560 command itself ended in error, the underlying message about the transport
2561 filter timeout was being overwritten with the pipe command error. Now the
2562 underlying error message should be appended to the second error message.
2564 TK/01 Fix poll() being unavailable on Mac OSX 10.2.
2566 PH/02 Reduce the amount of output that "make" produces by default. Full output
2567 can still be requested.
2569 PH/03 The warning log line about a condition test deferring for a "warn" verb
2570 was being output only once per connection, rather than after each
2571 occurrence (because it was using the same function as for successful
2572 "warn" verbs). This seems wrong, so I have changed it.
2574 TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
2575 it should not have, which might have caused a crash in the right
2576 circumstances, but probably never did.
2578 PH/04 Installed a modified version of Tony Finch's patch to make submission
2579 mode fix the return path as well as the Sender: header line, and to
2580 add a /name= option so that you can make the user's friendly name appear
2583 TF/03 Added the control = fakedefer ACL modifier.
2585 TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
2586 Mark Lowes for thorough testing.
2588 TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
2590 TK/03 Merged latest SRS patch from Miles Wilton.
2592 PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
2593 with the definition in sysexits.h (which is #included earlier).
2594 Fortunately, Exim does not actually use EX_OK. The code used to try to
2595 preserve the sysexits.h value, by assumimg that macro definitions were
2596 scanned for macro replacements. I have been disabused of this notion,
2597 so now the code just undefines EX_OK before #including unistd.h.
2599 PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
2600 in the smtp transport. When a block could not be written in a single
2601 write() function, the timeout was being re-applied to each part-write.
2602 This seems wrong - if the receiver was accepting one byte at a time it
2603 would take for ever. The timeout is now adjusted when this happens. It
2604 doesn't have to be particularly precise.
2606 TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
2607 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
2609 PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
2610 without a domain if the check to <postmaster@domain> fails.
2612 SC/01 Eximstats: added -xls and the ability to specify output files
2613 (patch written by Frank Heydlauf).
2615 SC/02 Eximstats: use FileHandles for outputing results.
2617 SC/03 Eximstats: allow any combination of xls, txt, and html output.
2619 SC/04 Eximstats: fixed display of large numbers with -nvr option
2621 SC/05 Eximstats: fixed merging of reports with empty tables.
2623 SC/06 Eximstats: added the -include_original_destination flag
2625 SC/07 Eximstats: removed tabs and trailing whitespace.
2627 TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
2629 TK/06 MBOX spool code: Add real "From " MBOX separator line
2630 so the .eml file is really in mbox format (even though
2631 most programs do not really care). Patch from Alex Miller.
2633 TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
2634 The latter is generated from $received_to and is only set if the
2635 message has one envelope recipient. SA can use these headers,
2636 obviously out-of-the-box. Patch from Alex Miller.
2638 PH/08 The ${def test on a variable was returning false if the variable's
2639 value was "0", contrary to what the specification has always said!
2640 The result should be true unless the variable is empty.
2642 PH/09 The syntax error of a character other than { following "${if
2643 def:variable_name" (after optional whitespace) was not being diagnosed.
2644 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
2645 accidental colon was present, for example, could give incorrect results.
2647 PH/10 Tidied the code in a number of places where the st_size field of a stat()
2648 result is used (not including appendfile, where other changes are about
2651 PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
2652 This involved changing a lot of size variables from int to off_t. It
2653 should work with maildirs and everything.
2655 TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
2656 spamd dying while we are connected to it.
2658 TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
2661 PH/12 Applied Alex Kiernan's patch for the API change for the error callback
2662 function for BDB 4.3.
2664 PH/13 Changed auto_thaw such that it does not apply to bounce messages.
2666 PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
2667 the sources for PCRE have been re-arranged and more files are now
2670 PH/15 The code I had for printing potentially long long variables in PH/11
2671 above was not the best (it lost precision). The length of off_t variables
2672 is now inspected at build time, and an appropriate printing format (%ld
2673 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
2674 to be "long long int" or "long int". This is needed for the internal
2675 formatting function string_vformat().
2677 PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
2678 the configuration file to be ":syslog", then the script "guesses" where
2679 the logs files are, rather than using the compiled in default. In our
2680 case the guess is not the same as the compiled default, so the script
2681 suddenly stopped working when I started to use syslog. The patch checks
2682 to see if log_file_path is "". If so, it attempts to read it from exim
2683 with no configuration file to get the compiled in version, before it
2684 falls back to the previous guessing code."
2686 TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
2687 implementing BATV in an Exim configuration. See NewStuff for the gory
2690 PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
2691 Makefile that are specific to HP-UX.
2693 PH/18 If the "use_postmaster" option was set for a recipient callout together
2694 with the "random" option, the postmaster address was used as the MAIL
2695 FROM address for the random test, but not for the subsequent recipient
2696 test. It is now used for both.
2698 PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
2699 patch removes a few documentation additions to RFC 3028, because the
2700 latest draft now contains them. It adds the new en;ascii-case comparator
2701 and a new error check for 8bit text in MIME parts. Comparator and
2702 require names are now matched exactly. I enabled the subaddress
2703 extension, but it is not well tested yet (read: it works for me)."
2705 PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
2706 rework some of the code of TK/09 above to avoid the hardwired use of
2707 "%lld" and "long long". Replaced the call to snprintf() with a call to
2710 PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
2711 records point to non-existent hosts", "retry timeout exceeded", and
2712 "retry time not reached for any host after a long failure period".
2714 PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
2715 experimental DomainKeys support:
2717 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
2718 (2) On an error such as an illegally used "control", the wrong name for
2719 the control was given.
2721 These problems did NOT occur unless DomainKeys support was compiled.
2723 PH/23 Added daemon_startup_retries and daemon_startup_sleep.
2725 PH/24 Added ${if match_ip condition.
2727 PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
2728 databases so that it will be absolutely obvious if a crash occurs in the
2729 DB library. This is a regular occurrence (often caused by mis-matched
2732 PH/26 Insert a lot of missing (void) casts for functions such as chown(),
2733 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
2734 picked up on a user's system that detects such things. There doesn't seem
2735 to be a gcc warning option for this - only an attribute that has to be
2736 put on the function's prototype. It seems that in Fedora Core 4 they have
2737 set this on a number of new functions. No doubt there will be more in due
2740 PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
2741 specify a transport. However, if an address that was verified by such a
2742 router was the subject of a callout, Exim crashed because it tried to
2743 read the rcpt_include_affixes from the non-existent transport. Now it
2744 just assumes that the setting of that option is false. This bug was
2745 introduced by 4.51/PH/31.
2747 PH/28 Changed -d+all to exclude +memory, because that information is very
2748 rarely of interest, but it makes the output a lot bigger. People tend to
2749 do -d+all out of habit.
2751 PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
2752 code in os-type was giving problems when libc.so lives in lib64, like on
2755 PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
2756 aren't the modern standard, and it seems that some systems' include files
2757 don't always have them. Exim was already checking for some of the newer
2758 ones like T_AAAA, and defining it itself. I've added checks for all the
2759 record types that Exim uses.
2761 PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
2762 not automatically generating a new one, as it is supposed to. This
2763 prevented TLS from working. If the file did exist, but contained invalid
2764 data, a new version was generated, as expected. It was only the case of a
2765 non-existent file that was broken.
2767 TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
2768 with a change in libdomainkeys > 0.64.
2770 TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
2771 from DNS. If the selector record carries the flag, it now has
2772 precedence over the domain-wide flag.
2774 TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
2776 PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
2777 the use of a port name that isn't defined in /etc/services) occurred, the
2778 message was deferred as in a normal delivery, and thus remained on the
2779 spool, instead of being failed because of the mua_wrapper setting. This
2780 is now fixed, and I tidied up some of the mua_wrapper messages at the
2783 SC/08 Eximstats: whilst parsing the mainlog(s), store information about
2784 the messages in a hash of arrays rather than using individual hashes.
2785 This is a bit cleaner and results in dramatic memory savings, albeit
2786 at a slight CPU cost.
2788 SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
2789 as requested by Marc Sherman.
2791 SC/10 Eximstats: added histograms for user specified patterns as requested
2794 SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
2796 PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
2797 fopen() in the content-scanning modules that did not already have it.
2803 TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
2804 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
2806 TK/02 Fix ACL "control" statement not being available in MIME ACL.
2808 TK/03 Fix ACL "regex" condition not being available in MIME ACL.
2810 PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
2811 to test Sieve filters that use "vacation".
2813 PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
2814 that changes the way the GnuTLS parameters are stored in the cache file.
2815 The new format can be generated externally. For backward compatibility,
2816 if the data in the cache doesn't make sense, Exim assumes it has read an
2817 old-format file, and it generates new data and writes a new file. This
2818 means that you can't go back to an older release without removing the
2821 PH/03 A redirect router that has both "unseen" and "one_time" set does not
2822 work if there are any delivery delays because "one_time" forces the
2823 parent to be marked "delivered", so its unseen clone is never tried
2824 again. For this reason, Exim now forbids the simultaneous setting of
2827 PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
2828 redirected to themselves ("homonym" addresses). Read the long ChangeLog
2829 entry if you want to know the details. The fix, however, neglected to
2830 consider the case when local delivery batching is involved. The test for
2831 "previously delivered" was not happening when checking to see if an
2832 address could be batched with a previous (undelivered) one; under
2833 certain circumstances this could lead to multiple deliveries to the same
2836 PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
2837 in its include files, and this causes problems building Exim.
2839 PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
2840 header_syntax) but Exim was just ignoring anything given after a slash.
2841 In particular, this caused confusion with an attempt to use "verify =
2842 reverse_host_lookup/defer_ok". An error is now given when options are
2843 supplied for verify items that do not have them. (Maybe reverse_host_
2844 lookup should have a defer_ok option, but that's a different point.)
2846 PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
2847 defined by RFC 821) to 2048, because there were problems with some AUTH
2848 commands, and RFC 1869 says the size should be increased for extended
2849 SMTP commands that take arguments.
2851 PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
2854 PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
2855 "unknown" error; now it says that the functionality isn't in the binary.
2857 PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
2858 an address' error message when a string expansion fails (syntax or
2859 whatever). Otherwise the password may appear in the log. Following change
2860 PH/42 below, there is no longer a chance of it appearing in a bounce
2863 PH/11 Installed exipick version 20050225.0 from John Jetmore.
2865 PH/12 If the last host in a fallback_hosts list was multihomed, only the first
2866 of its addresses was ever tried. (Bugzilla bug #2.)
2868 PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
2869 the result incorrectly in the debug output. (It correctly added a newline
2870 to what was transported.)
2872 TF/01 Added $received_time.
2874 PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
2875 commented out examples of how to interface to a virus scanner and to
2876 SpamAssassin. Also added commented examples of av_scanner and
2877 spamd_address settings.
2879 PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
2880 and controls are allowed in which ACLs. There were a couple of minor
2881 errors. Some of the entries in the conditions table (which is a table of
2882 where they are NOT allowed) were getting very unwieldy; rewrote them as a
2883 negation of where the condition IS allowed.
2885 PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
2887 PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
2888 header file does not have a version number, so I've had to invent a new
2889 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
2890 API. The code is untested by me (my Linux distribution still has 0.3.2 of
2891 radiusclient), but it was contributed by a Radius user.
2893 PH/18 Installed Lars Mainka's patch for the support of CRL collections in
2894 files or directories, for OpenSSL.
2896 PH/19 When an Exim process that is running as root has to create an Exim log
2897 file, it does so in a subprocess that runs as exim:exim so as to get the
2898 ownership right at creation (otherwise, other Exim processes might see
2899 the file with the wrong ownership). There was no test for failure of this
2900 fork() call, which would lead to the process getting stuck as it waited
2901 for a non-existent subprocess. Forks do occasionally fail when resources
2902 run out. I reviewed all the other calls to fork(); they all seem to check
2905 PH/20 When checking for unexpected SMTP input at connect time (before writing
2906 the banner), Exim was not dealing correctly with a non-positive return
2907 from the read() function. If the client had disconnected by this time,
2908 the result was a log entry for a synchronization error with an empty
2909 string after "input=" when read() returned zero. If read() returned -1
2910 (an event I could not check), uninitialized data bytes were printed.
2911 There were reports of junk text (parts of files, etc) appearing after
2914 PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
2916 PH/22 Added support for macro redefinition, and (re)definition in between
2917 driver and ACL definitions.
2919 PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
2920 forgetting to use the resulting value; it was using the unexpanded value.
2922 PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
2923 hadn't been configured. The fix is from Juergen Kreileder, who
2924 understands it better than I do:
2926 "Here's what I see happening with three configured cyrus_sasl
2927 authenticators configured (plain, login, cram-md5):
2929 On startup auth_cyrus_sasl_init() gets called for each of these.
2930 This means three calls to sasl_listmech() without a specified mech_list.
2931 => SASL tests which mechs of all available mechs actually work
2932 => three warnings about OTP not working
2933 => the returned list contains: plain, login, cram-md5, digest-md5, ...
2935 With the patch, sasl_listmech() also gets called three times. But now
2936 SASL's mech_list option is set to the server_mech specified in the the
2937 authenticator. Or in other words, the answer from sasl_listmech()
2938 gets limited to just the mech you're testing for (which is different
2940 => the return list contains just 'plain' or 'login', 'cram-md5' or
2941 nothing depending on the value of ob->server_mech.
2943 I've just tested the patch: Authentication still works fine,
2944 unavailable mechs specified in the exim configuration are still
2945 caught, and the auth.log warnings about OTP are gone."
2947 PH/25 When debugging is enabled, the contents of the command line are added
2948 to the debugging output, even when log_selector=+arguments is not
2951 PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2952 answer is "GNU", and only if the return is "GNU/something" is the answer
2955 PH/27 $acl_verify_message is now set immediately after the failure of a
2956 verification in an ACL, and so is available in subsequent modifiers. In
2957 particular, the message can be preserved by coding like this:
2959 warn !verify = sender
2960 set acl_m0 = $acl_verify_message
2962 Previously, $acl_verify_message was set only while expanding "message"
2963 and "log_message" when a very denied access.
2965 PH/28 Modified OS/os.c-Linux with
2967 -#ifndef OS_LOAD_AVERAGE
2968 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2970 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2971 nomenclature these days.)
2973 PH/29 Installed patch from the Sieve maintainer that adds the options
2974 sieve_useraddress and sieve_subaddress to the redirect router.
2976 PH/30 In these circumstances:
2977 . Two addresses routed to the same list of hosts;
2978 . First host does not offer TLS;
2979 . First host accepts first address;
2980 . First host gives temporary error to second address;
2981 . Second host offers TLS and a TLS session is established;
2982 . Second host accepts second address.
2983 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2984 and peerdn, if requested) that were in fact used only for the second
2987 PH/31 When doing a callout as part of verifying an address, Exim was not paying
2988 attention to any local part prefix or suffix that was matched by the
2989 router that accepted the address. It now behaves in the same way as it
2990 does for delivery: the affixes are removed from the local part unless
2991 rcpt_include_affixes is set on the transport.
2993 PH/32 Add the sender address, as F=<...>, to the log line when logging a
2994 timeout during the DATA phase of an incoming message.
2996 PH/33 Sieve envelope tests were broken for match types other than :is. I have
2997 applied a patch sanctioned by the Sieve maintainer.
2999 PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
3000 the uid or gid is negative. A case of a negative gid caused this to be
3001 noticed. The fix allows for either to be negative.
3003 PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
3004 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
3007 PH/36 The change PH/12 above was broken. Fixed it.
3009 PH/37 Exim used to check for duplicate addresses in the middle of routing, on
3010 the grounds that routing the same address twice would always produce the
3011 same answer. This might have been true once, but it is certainly no
3012 longer true now. Routing a child address may depend on the previous
3013 routing that produced that child. Some complicated redirection strategies
3014 went wrong when messages had multiple recipients, and made Exim's
3015 behaviour dependent on the order in which the addresses were given.
3017 I have moved the duplicate checking until after the routing is complete.
3018 Exim scans the addresses that are assigned to local and remote
3019 transports, and removes any duplicates. This means that more work will be
3020 done, as duplicates will always all be routed, but duplicates are
3021 presumably rare, so I don't expect this is of any significance.
3023 For deliveries to pipes, files, and autoreplies, the duplicate checking
3024 still happens during the routing process, since they are not going to be
3027 PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
3028 It corrects a timeout issue with spamd. This is Ian's comment: "The
3029 background is that sometimes spamd either never reads data from a
3030 connection it has accepted, or it never writes response data. The exiscan
3031 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
3032 blindly assumes that writes won't block so it may never time out."
3034 PH/39 Allow G after quota size as well as K and M.
3036 PH/40 The value set for $authenticated_id in an authenticator may not contain
3037 binary zeroes or newlines because the value is written to log lines and
3038 to spool files. There was no check on this. Now the value is run through
3039 the string_printing() function so that such characters are converted to
3040 printable escape sequences.
3042 PH/41 $message_linecount is a new variable that contains the total number of
3043 lines in the message. Compare $body_linecount, which is the count for the
3046 PH/42 Exim no longer gives details of delivery errors for specific addresses in
3047 bounce and delay warning messages, except in certain special cases, which
3050 (a) An SMTP error message from a remote host;
3051 (b) A message specified in a :fail: redirection;
3052 (c) A message specified in a "fail" command in a system filter;
3053 (d) A message specified in a FAIL return from the queryprogram router;
3054 (e) A message specified by the cannot_route_message router option.
3056 In these cases only, Exim does include the error details in bounce and
3057 warning messages. There are also a few cases where bland messages such
3058 as "unrouteable address" or "local delivery error" are given.
3060 PH/43 $value is now also set for the "else" part of a ${run expansion.
3062 PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
3063 being worked on, but at least Exim now implements the latest version to
3066 PH/45 In a pipe transport, although a timeout while waiting for the pipe
3067 process to complete was treated as a delivery failure, a timeout while
3068 writing the message to the pipe was logged, but erroneously treated as a
3069 successful delivery. Such timeouts include transport filter timeouts. For
3070 consistency with the overall process timeout, these timeouts are now
3071 treated as errors, giving rise to delivery failures by default. However,
3072 there is now a new Boolean option for the pipe transport called
3073 timeout_defer, which, if set TRUE, converts the failures into defers for
3074 both kinds of timeout. A transport filter timeout is now identified in
3077 PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
3078 systems where "make" and "gmake" are different, calling "gmake" at top
3079 level broke things. I've arranged for the value of $(MAKE) to be passed
3080 from the Makefile to this script so that it can call the same version of
3084 A note about Exim versions 4.44 and 4.50
3085 ----------------------------------------
3087 Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
3088 changes of various kinds. As a consequence, a big documentation update was
3089 needed. This delayed the release for rather longer than seemed good, especially
3090 in the light of a couple of (minor) security issues. Therefore, the changes
3091 that fixed bugs were backported into 4.43, to create a 4.44 maintenance
3092 release. So 4.44 and 4.50 are in effect two different branches that both start
3095 I have left the 4.50 change log unchanged; it contains all the changes since
3096 4.43. The change log for 4.44 is below; many of its items are identical to
3097 those for 4.50. This seems to be the most sensible way to preserve the
3098 historical information.
3104 1. Minor wording change to the doc/README.SIEVE file.
3106 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
3107 computation of the current number of files was incorrect.
3109 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
3110 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
3113 4. Give more explanation in the error message when the command for a transport
3114 filter fails to execute.
3116 5. There are several places where Exim runs a non-Exim command in a
3117 subprocess. The SIGUSR1 signal should be disabled for these processes. This
3118 was being done only for the command run by the queryprogram router. It is
3119 now done for all such subprocesses. The other cases are: ${run, transport
3120 filters, and the commands run by the lmtp and pipe transports.
3122 6. Added CONFIGURE_GROUP build-time option.
3124 7. Some older OS have a limit of 256 on the maximum number of file
3125 descriptors. Exim was using setrlimit() to set 1000 as a large value
3126 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
3127 systems. I've change it so that if it can't get 1000, it tries for 256.
3129 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
3130 was an oversight, and furthermore, ever since the addition of extra
3131 controls (e.g. 4.43/32), the checks on when to allow different forms of
3132 "control" were broken. There should now be diagnostics for all cases when a
3133 control that does not make sense is encountered.
3135 9. Added the /retain_sender option to "control=submission".
3137 10. $recipients is now available in the predata ACL (oversight).
3139 11. Tidy the search cache before the fork to do a delivery from a message
3140 received from the command line. Otherwise the child will trigger a lookup
3141 failure and thereby defer the delivery if it tries to use (for example) a
3142 cached ldap connection that the parent has called unbind on.
3144 12. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
3145 of $address_data from the recipient verification was clobbered by the
3146 sender verification.
3148 13. The value of address_data from a sender verification is now available in
3149 $sender_address_data in subsequent conditions in the ACL statement.
3151 14. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
3153 15. Added a new option "connect=<time>" to callout options, to set a different
3156 16. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
3157 was its contents. (It was OK if the option was not defined at all.)
3159 17. A "Completed" log line is now written for messages that are removed from
3160 the spool by the -Mrm option.
3162 18. New variables $sender_verify_failure and $recipient_verify_failure contain
3163 information about exactly what failed.
3165 19. Added -dd to debug only the daemon process.
3167 20. Incorporated Michael Haardt's patch to ldap.c for improving the way it
3168 handles timeouts, both on the server side and network timeouts. Renamed the
3169 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
3171 21. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
3172 It is now set to "smtps".
3174 22. $host_address is now set to the target address during the checking of
3175 ignore_target_hosts.
3177 23. When checking ignore_target_hosts for an ipliteral router, no host name was
3178 being passed; this would have caused $sender_host_name to have been used if
3179 matching the list had actually called for a host name (not very likely,
3180 since this list is usually IP addresses). A host name is now passed as
3183 24. Changed the calls that set up the SIGCHLD handler in the daemon to use the
3184 code that specifies a non-restarting handler (typically sigaction() in
3185 modern systems) in an attempt to fix a rare and obscure crash bug.
3187 25. Narrowed the window for a race in the daemon that could cause it to ignore
3188 SIGCHLD signals. This is not a major problem, because they are used only to
3189 wake it up if nothing else does.
3191 26. A malformed maildirsize file could cause Exim to calculate negative values
3192 for the mailbox size or file count. Odd effects could occur as a result.
3193 The maildirsize information is now recalculated if the size or filecount
3196 27. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
3197 support for a long time. Removed HAVE_SYS_VFS_H.
3199 28. Installed the latest version of exipick from John Jetmore.
3201 29. In an address list, if the pattern was not a regular expression, an empty
3202 subject address (from a bounce message) matched only if the pattern was an
3203 empty string. Non-empty patterns were not even tested. This was the wrong
3204 because it is perfectly reasonable to use an empty address as part of a
3205 database query. An empty address is now tested by patterns that are
3206 lookups. However, all the other forms of pattern expect the subject to
3207 contain a local part and a domain, and therefore, for them, an empty
3208 address still always fails if the pattern is not itself empty.
3210 30. Exim went into a mad DNS loop when attempting to do a callout where the
3211 host was specified on an smtp transport, and looking it up yielded more
3212 than one IP address.
3214 31. Re-factored the code for checking spool and log partition space into a
3215 function that finds that data and another that does the check. The former
3216 is then used to implement four new variables: $spool_space, $log_space,
3217 $spool_inodes, and $log_inodes.
3219 32. The RFC2047 encoding function was originally intended for short strings
3220 such as real names; it was not keeping to the 75-character limit for
3221 encoded words that the RFC imposes. It now respects the limit, and
3222 generates multiple encoded words if necessary. To be on the safe side, I
3223 have increased the buffer size for the ${rfc2047: expansion operator from
3226 33. It is now permitted to omit both strings after an "if" condition; if the
3227 condition is true, the result is "true". As before, when the second string
3228 is omitted, a false condition yields an empty string. This makes it less
3229 cumbersome to write custom ACL and router conditions.
3231 34. Failure to deliver a bounce message always caused it to be frozen, even if
3232 there was an errors_to setting on the router. The errors_to setting is now
3235 35. If an IPv6 address is given for -bh or -bhc, it is now converted to the
3236 canonical form (fully expanded) before being placed in
3237 $sender_host_address.
3239 36. The table in the code that translates DNS record types into text (T_A to
3240 "A" for instance) was missing entries for NS and CNAME. It is just possible
3241 that this could have caused confusion if both these types were looked up
3242 for the same domain, because the text type is used as part of Exim's
3243 per-process caching. But the chance of anyone hitting this buglet seems
3246 37. The dnsdb lookup has been extended in a number of ways.
3248 (1) There is a new type, "zns", which walks up the domain tree until it
3249 finds some nameserver records. It should be used with care.
3251 (2) There is a new type, "mxh", which is like "mx" except that it returns
3252 just the host names, not the priorities.
3254 (3) It is now possible to give a list of domains (or IP addresses) to be
3255 looked up. The behaviour when one of the lookups defers can be
3256 controlled by a keyword.
3258 (4) It is now possible to specify the separator character for use when
3259 multiple records are returned.
3261 38. The dnslists ACL condition has been extended: it is now possible to supply
3262 a list of IP addresses and/or domains to be looked up in a particular DNS
3265 39. Added log_selector=+queue_time_overall.
3267 40. When running the queue in the test harness, wait just a tad after forking a
3268 delivery process, to get repeatability of debugging output.
3270 41. Include certificate and key file names in error message when GnuTLS fails
3271 to set them up, because the GnuTLS error message doesn't include the name
3272 of the failing file when there is a problem reading it.
3274 42. Allow both -bf and -bF in the same test run.
3276 43. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
3278 44. The "Exiscan patch" is now merged into the mainline Exim source.
3280 45. Sometimes the final signoff response after QUIT could fail to get
3281 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
3282 < 0 before doing a fflush(). This bug looks as though it goes back to the
3283 introduction of TLS in release 3.20, but "sometimes" must have been rare
3284 because the tests only now provoked it.
3286 46. Reset the locale to "C" after calling embedded Perl, in case it was changed
3287 (this can affect the format of dates).
3289 47. exim_tidydb, when checking for the continued existence of a message for
3290 which it has found a message-specific retry record, was not finding
3291 messages that were in split spool directories. Consequently, it was
3292 deleting retry records that should have stayed in existence.
3294 48. Steve fixed some bugs in eximstats.
3296 49. The SPA authentication driver was not abandoning authentication and moving
3297 on to the next authenticator when an expansion was forced to fail,
3298 contradicting the general specification for all authenticators. Instead it
3299 was generating a temporary error. It now behaves as specified.
3301 50. The default ordering of permitted cipher suites for GnuTLS was pessimal
3302 (the order specifies the preference for clients). The order is now AES256,
3303 AES128, 3DES, ARCFOUR128.
3305 51. Small patch to Sieve code - explicitly set From: when generating an
3308 52. Exim crashed if a remote delivery caused a very long error message to be
3309 recorded - for instance if somebody sent an entire SpamAssassin report back
3310 as a large number of 550 error lines. This bug was coincidentally fixed by
3311 increasing the size of one of Exim's internal buffers (big_buffer) that
3312 happened as part of the Exiscan merge. However, to be on the safe side, I
3313 have made the code more robust (and fixed the comments that describe what
3316 53. Now that there can be additional text after "Completed" in log lines (if
3317 the queue_time_overall log selector is set), a one-byte patch to exigrep
3318 was needed to allow it to recognize "Completed" as not the last thing in
3321 54. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
3322 patch that reportedly fixes this has been added. I am not expert enough to
3323 create a test for it. This is what the patch creator wrote:
3325 "I found a little strange behaviour of ldap code when working with
3326 Windows 2003 AD Domain, where users was placed in more than one
3327 Organization Units. When I tried to give exim partial DN, the exit code
3328 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
3329 But simultaneously result of request was absolutely normal ldap result,
3330 so I produce this patch..."
3332 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
3333 REFERENCE, so I have modified the code to exclude the patch when that macro
3336 55. Some experimental protocols are using DNS PTR records for new purposes. The
3337 keys for these records are domain names, not reversed IP addresses. The
3338 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
3339 leaves it alone. Component reversal etc. now happens only for IP addresses.
3342 56. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
3344 57. Double the size of the debug message buffer (to 2048) so that more of very
3345 long debug lines gets shown.
3347 58. The exicyclog utility now does better if the number of log files to keep
3348 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
3350 59. Two changes related to the smtp_active_hostname option:
3352 (1) $smtp_active_hostname is now available as a variable.
3353 (2) The default for smtp_banner uses $smtp_active_hostname instead
3354 of $primary_hostname.
3356 60. The host_aton() function is supposed to be passed a string that is known
3357 to be a valid IP address. However, in the case of IPv6 addresses, it was
3358 not checking this. This is a hostage to fortune. Exim now panics and dies
3359 if the condition is not met. A case was found where this could be provoked
3360 from a dnsdb PTR lookup with an IPv6 address that had more than 8
3361 components; fortuitously, this particular loophole had already been fixed
3362 by change 4.50/55 above.
3364 If there are any other similar loopholes, the new check in host_aton()
3365 itself should stop them being exploited. The report I received stated that
3366 data on the command line could provoke the exploit when Exim was running as
3367 exim, but did not say which command line option was involved. All I could
3368 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
3369 running as the user.
3372 61. There was a buffer overflow vulnerability in the SPA authentication code
3373 (which came originally from the Samba project). I have added a test to the
3374 spa_base64_to_bits() function which I hope fixes it.
3377 62. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
3378 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
3380 63. The daemon start-up calls getloadavg() while still root for those OS that
3381 need the first call to be done as root, but it missed one case: when
3382 deliver_queue_load_max is set with deliver_drop_privilege. This is
3383 necessary for the benefit of the queue runner, because there is no re-exec
3384 when deliver_drop_privilege is set.
3386 64. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
3387 This has been fixed.
3389 65. Caching of lookup data for "hosts =" ACL conditions, when a named host list
3390 was in use, was not putting the data itself into the right store pool;
3391 consequently, it could be overwritten for a subsequent message in the same
3392 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
3395 66. Added hosts_max_try_hardlimit to the smtp transport, default 50.
3397 67. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
3398 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
3399 the function were treating the return as a boolean value, which happened to
3400 work because 0=false and not-0=true, but is not correct code.
3402 68. The host_aton() function was not handling scoped IPv6 addresses (those
3403 with, for example, "%eth0" on the end) correctly.
3405 69. Fixed some compiler warnings in acl.c for the bitmaps specified with
3406 negated items (that is, ~something) in unsigned ints. Some compilers
3407 apparently mutter when there is no cast.
3409 70. If an address verification called from an ACL failed, and did not produce a
3410 user-specific message (i.e. there was only a "system" message), nothing was
3411 put in $acl_verify_message. In this situation, it now puts the system
3414 71. Change 4.23/11 added synchronization checking at the start of an SMTP
3415 session; change 4.31/43 added the unwanted input to the log line - except
3416 that it did not do this in the start of session case. It now does.
3418 72. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
3419 This is wrong and can cause the other end to generate a synchronization
3420 error if it is another Exim or anything else that does the synchronization
3421 check. A QUIT command is no longer sent after a timeout.
3423 73. $host_lookup_deferred has been added, to make it easier to detect DEFERs
3424 during host lookups.
3426 74. The defer_ok option of callout verification was not working if it was used
3427 when verifying addresses in header lines, that is, for this case:
3429 verify = header_sender/callout=defer_ok
3431 75. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
3432 those file descriptors could be used for SMTP connections. If anything
3433 wrote to stderr (the example that came up was "warn" in embedded Perl), it
3434 could be sent to the SMTP client, causing chaos. The daemon now opens
3435 stdin, stdout, and stderr to /dev/null when it puts itself into the
3438 76. Arrange for output from Perl's "warn" command to be written to Exim's main
3439 log by default. The user can override this with suitable Perl magic.
3441 77. The use of log_message on a "discard" ACL verb, which is supposed to add to
3442 the log message when discard triggers, was not working for the DATA ACL or
3443 for the non-SMTP ACL.
3445 78. Error message wording change in sieve.c.
3447 79. If smtp_accept_max_per_host was set, the number of connections could be
3448 restricted to fewer than expected, because the daemon was trying to set up
3449 a new connection before checking whether the processes handling previous
3450 connections had finished. The check for completed processes is now done
3451 earlier. On busy systems, this bug wouldn't be noticed because something
3452 else would have woken the daemon, and it would have reaped the completed
3455 80. If a message was submitted locally by a user whose login name contained one
3456 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
3457 It caused a spool format error. I have fixed the spool reading code. A
3458 related problem was that the "from" clause in the Received: line became
3459 illegal because of the space(s). It is now covered by ${quote_local_part.
3461 81. Included the latest eximstats from Steve (adds average sizes to HTML Top
3464 82. Updated OS/Makefile-AIX as per message from Mike Meredith.
3466 83. Patch from Sieve maintainer to fix unterminated string problem in
3467 "vacation" handling.
3469 84. Some minor changes to the Linux configuration files to help with other
3470 OS variants using glibc.
3472 85. One more patch for Sieve to update vacation handling to latest spec.
3475 ----------------------------------------------------
3476 See the note above about the 4.44 and 4.50 releases.
3477 ----------------------------------------------------
3483 1. Change 4.43/35 introduced a bug that caused file counts to be
3484 incorrectly computed when quota_filecount was set in an appendfile
3487 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
3488 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
3491 3. Give more explanation in the error message when the command for a transport
3492 filter fails to execute.
3494 4. There are several places where Exim runs a non-Exim command in a
3495 subprocess. The SIGUSR1 signal should be disabled for these processes. This
3496 was being done only for the command run by the queryprogram router. It is
3497 now done for all such subprocesses. The other cases are: ${run, transport
3498 filters, and the commands run by the lmtp and pipe transports.
3500 5. Some older OS have a limit of 256 on the maximum number of file
3501 descriptors. Exim was using setrlimit() to set 1000 as a large value
3502 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
3503 systems. I've change it so that if it can't get 1000, it tries for 256.
3505 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
3506 was an oversight, and furthermore, ever since the addition of extra
3507 controls (e.g. 4.43/32), the checks on when to allow different forms of
3508 "control" were broken. There should now be diagnostics for all cases when a
3509 control that does not make sense is encountered.
3511 7. $recipients is now available in the predata ACL (oversight).
3513 8. Tidy the search cache before the fork to do a delivery from a message
3514 received from the command line. Otherwise the child will trigger a lookup
3515 failure and thereby defer the delivery if it tries to use (for example) a
3516 cached ldap connection that the parent has called unbind on.
3518 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
3519 of $address_data from the recipient verification was clobbered by the
3520 sender verification.
3522 10. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
3523 was its contents. (It was OK if the option was not defined at all.)
3525 11. A "Completed" log line is now written for messages that are removed from
3526 the spool by the -Mrm option.
3528 12. $host_address is now set to the target address during the checking of
3529 ignore_target_hosts.
3531 13. When checking ignore_target_hosts for an ipliteral router, no host name was
3532 being passed; this would have caused $sender_host_name to have been used if
3533 matching the list had actually called for a host name (not very likely,
3534 since this list is usually IP addresses). A host name is now passed as
3537 14. Changed the calls that set up the SIGCHLD handler in the daemon to use the
3538 code that specifies a non-restarting handler (typically sigaction() in
3539 modern systems) in an attempt to fix a rare and obscure crash bug.
3541 15. Narrowed the window for a race in the daemon that could cause it to ignore
3542 SIGCHLD signals. This is not a major problem, because they are used only to
3543 wake it up if nothing else does.
3545 16. A malformed maildirsize file could cause Exim to calculate negative values
3546 for the mailbox size or file count. Odd effects could occur as a result.
3547 The maildirsize information is now recalculated if the size or filecount
3550 17. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
3551 support for a long time. Removed HAVE_SYS_VFS_H.
3553 18. Updated exipick to current release from John Jetmore.
3555 19. Allow an empty sender to be matched against a lookup in an address list.
3556 Previously the only cases considered were a regular expression, or an
3559 20. Exim went into a mad DNS lookup loop when doing a callout where the
3560 host was specified on the transport, if the DNS lookup yielded more than
3563 21. The RFC2047 encoding function was originally intended for short strings
3564 such as real names; it was not keeping to the 75-character limit for
3565 encoded words that the RFC imposes. It now respects the limit, and
3566 generates multiple encoded words if necessary. To be on the safe side, I
3567 have increased the buffer size for the ${rfc2047: expansion operator from
3570 22. Failure to deliver a bounce message always caused it to be frozen, even if
3571 there was an errors_to setting on the router. The errors_to setting is now
3574 23. If an IPv6 address is given for -bh or -bhc, it is now converted to the
3575 canonical form (fully expanded) before being placed in
3576 $sender_host_address.
3578 24. Updated eximstats to version 1.33
3580 25. Include certificate and key file names in error message when GnuTLS fails
3581 to set them up, because the GnuTLS error message doesn't include the name
3582 of the failing file when there is a problem reading it.
3584 26. Expand error message when OpenSSL has problems setting up cert/key files.
3587 27. Reset the locale to "C" after calling embedded Perl, in case it was changed
3588 (this can affect the format of dates).
3590 28. exim_tidydb, when checking for the continued existence of a message for
3591 which it has found a message-specific retry record, was not finding
3592 messages that were in split spool directories. Consequently, it was
3593 deleting retry records that should have stayed in existence.
3595 29. eximstats updated to version 1.35
3596 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
3597 1.35 - bugfix such that pie charts by volume are generated correctly
3599 30. The SPA authentication driver was not abandoning authentication and moving
3600 on to the next authenticator when an expansion was forced to fail,
3601 contradicting the general specification for all authenticators. Instead it
3602 was generating a temporary error. It now behaves as specified.
3604 31. The default ordering of permitted cipher suites for GnuTLS was pessimal
3605 (the order specifies the preference for clients). The order is now AES256,
3606 AES128, 3DES, ARCFOUR128.
3608 31. Small patch to Sieve code - explicitly set From: when generating an
3611 32. Exim crashed if a remote delivery caused a very long error message to be
3612 recorded - for instance if somebody sent an entire SpamAssassin report back
3613 as a large number of 550 error lines. This bug was coincidentally fixed by
3614 increasing the size of one of Exim's internal buffers (big_buffer) that
3615 happened as part of the Exiscan merge. However, to be on the safe side, I
3616 have made the code more robust (and fixed the comments that describe what
3619 33. Some experimental protocols are using DNS PTR records for new purposes. The
3620 keys for these records are domain names, not reversed IP addresses. The
3621 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
3622 leaves it alone. Component reversal etc. now happens only for IP addresses.
3625 34. The host_aton() function is supposed to be passed a string that is known
3626 to be a valid IP address. However, in the case of IPv6 addresses, it was
3627 not checking this. This is a hostage to fortune. Exim now panics and dies
3628 if the condition is not met. A case was found where this could be provoked
3629 from a dnsdb PTR lookup with an IPv6 address that had more than 8
3630 components; fortuitously, this particular loophole had already been fixed
3631 by change 4.50/55 or 4.44/33 above.
3633 If there are any other similar loopholes, the new check in host_aton()
3634 itself should stop them being exploited. The report I received stated that
3635 data on the command line could provoke the exploit when Exim was running as
3636 exim, but did not say which command line option was involved. All I could
3637 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
3638 running as the user.
3641 35. There was a buffer overflow vulnerability in the SPA authentication code
3642 (which came originally from the Samba project). I have added a test to the
3643 spa_base64_to_bits() function which I hope fixes it.
3646 36. The daemon start-up calls getloadavg() while still root for those OS that
3647 need the first call to be done as root, but it missed one case: when
3648 deliver_queue_load_max is set with deliver_drop_privilege. This is
3649 necessary for the benefit of the queue runner, because there is no re-exec
3650 when deliver_drop_privilege is set.
3652 37. Caching of lookup data for "hosts =" ACL conditions, when a named host list
3653 was in use, was not putting the data itself into the right store pool;
3654 consequently, it could be overwritten for a subsequent message in the same
3655 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
3658 38. Sometimes the final signoff response after QUIT could fail to get
3659 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
3660 < 0 before doing a fflush(). This bug looks as though it goes back to the
3661 introduction of TLS in release 3.20, but "sometimes" must have been rare
3662 because the tests only now provoked it.
3668 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
3669 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
3670 Now it returns an integer. A number of calls were still expecting a T/F
3671 return. Fortuitously, in all cases, the tests worked in OK situations,
3672 which is the norm. However, things would have gone wrong on any write
3673 failures on the smtp file descriptor. This function is used when sending
3674 messages over SMTP and also when doing verify callouts.
3676 2. When Exim is called to do synchronous delivery of a locally submitted
3677 message (the -odf or -odi options), it no longer closes stderr before doing
3680 3. Implemented the mua_wrapper option.
3682 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
3684 5. Implemented the functions header_remove(), header_testname(),
3685 header_add_at_position(), and receive_remove_recipient(), and exported them
3688 6. If an ACL "warn" statement specified the addition of headers, Exim already
3689 inserted X-ACL-Warn: at the start if there was no header name. However, it
3690 was not making this test for the second and subsequent header lines if
3691 there were newlines in the string. This meant that an invalid header could
3692 be inserted if Exim was badly configured.
3694 7. Allow an ACL "warn" statement to add header lines at the start or after all
3695 the Received: headers, as well as at the end.
3697 8. Added the rcpt_4xx retry error code.
3699 9. Added postmaster_mailfrom=xxx to callout verification option.
3701 10. Added mailfrom=xxxx to the callout verification option, for verify=
3704 11. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
3705 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
3707 12. Inserted some casts to stop certain compilers warning when using pointer
3708 differences as field lengths or precisions in printf-type calls (mostly
3709 affecting debugging statements).
3711 13. Added optional readline() support for -be (dynamically loaded).
3713 14. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
3714 same clock tick as a message's arrival, so that its received time was the
3715 same as the "first fail" time on the retry record, and that message
3716 remained on the queue past the ultimate address timeout, every queue runner
3717 would try a delivery (because it was past the ultimate address timeout) but
3718 after another failure, the ultimate address timeout, which should have then
3719 bounced the address, did not kick in. This was a "< instead of <=" error;
3720 in most cases the first failure would have been in the next clock tick
3721 after the received time, and all would be well.
3723 15. The special items beginning with @ in domain lists (e.g. @mx_any) were not
3724 being recognized when the domain list was tested by the match_domain
3725 condition in an expansion string.
3727 16. Added the ${str2b64: operator.
3729 17. Exim was always calling setrlimit() to set a large limit for the number of
3730 processes, without checking whether the existing limit was already
3731 adequate. (It did check for the limit on file descriptors.) Furthermore,
3732 errors from getrlimit() and setrlimit() were being ignored. Now they are
3733 logged to the main and panic logs, but Exim does carry on, to try to do its
3734 job under whatever limits there are.
3736 18. Imported PCRE 5.0.
3738 19. Trivial typo in log message " temporarily refused connection" (the leading
3741 20. If the log selector return_path_on_delivery was set and an address was
3742 redirected to /dev/null, the delivery process crashed because it assumed
3743 that a return path would always be set for a "successful" delivery. In this
3744 case, the whole delivery is bypassed as an optimization, and therefore no
3747 21. Internal re-arrangement: the function for sending a challenge and reading
3748 a response while authentication was assuming a zero-terminated challenge
3749 string. It's now changed to take a pointer and a length, to allow for
3750 binary data in such strings.
3752 22. Added the cyrus_sasl authenticator (code supplied by MBM).
3754 23. Exim was not respecting finduser_retries when seeking the login of the
3755 uid under which it was called; it was always trying 10 times. (The default
3756 setting of finduser_retries is zero.) Also, it was sleeping after the final
3757 failure, which is pointless.
3759 24. Implemented tls_on_connect_ports.
3761 25. Implemented acl_smtp_predata.
3763 26. If the domain in control=submission is set empty, Exim assumes that the
3764 authenticated id is a complete email address when it generates From: or
3765 Sender: header lines.
3767 27. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
3768 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
3769 chown and chgrp in /bin and hostname in /usr/bin.
3771 28. Exim was keeping the "process log" file open after each use, just as it
3772 does for the main log. This opens the possibility of it remaining open for
3773 long periods when the USR1 signal hits a daemon. Occasional processlog
3774 errors were reported, that could have been caused by this. Anyway, it seems
3775 much more sensible not to leave this file open at all, so that is what now
3778 29. The long-running daemon process does not normally write to the log once it
3779 has entered its main loop, and it closes the log before doing so. This is
3780 so that log files can straightforwardly be renamed and moved. However,
3781 there are a couple of unusual error situations where the daemon does write
3782 log entries, and I had neglected to close the log afterwards.
3784 30. The text of an SMTP error response that was received during a remote
3785 delivery was being truncated at 512 bytes. This is too short for some of
3786 the long messages that one sometimes sees. I've increased the limit to
3789 31. It is now possible to make retry rules that apply only when a message has a
3790 specific sender, in particular, an empty sender.
3792 32. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
3793 it possible to be selective about when SMTP synchronization is enforced.
3795 33. Added "control = caseful_local_part" and "control = "caselower_local_part".
3797 32. Implemented hosts_connection_nolog.
3799 33. Added an ACL for QUIT.
3801 34. Setting "delay_warning=" to disable warnings was not working; it gave a
3804 35. Added mailbox_size and mailbox_filecount to appendfile.
3806 36. Added control = no_multiline_responses to ACLs.
3808 37. There was a bug in the logic of the code that waits for the clock to tick
3809 in the case where the clock went backwards by a substantial amount such
3810 that the microsecond fraction of "now" was more than the microsecond
3811 fraction of "then" (but the whole seconds number was less).
3813 38. Added support for the libradius Radius client library this is found on
3814 FreeBSD (previously only the radiusclient library was supported).
3820 1. When certain lookups returned multiple values in the form name=value, the
3821 quoting of the values was not always being done properly. Specifically:
3822 (a) If the value started with a double quote, but contained no whitespace,
3824 (b) If the value contained whitespace other than a space character (i.e.
3825 tabs or newlines or carriage returns) it was not quoted.
3826 This fix has been applied to the mysql and pgsql lookups by writing a
3827 separate quoting function and calling it from the lookup code. The fix
3828 should probably also be applied to nisplus, ibase and oracle lookups, but
3829 since I cannot test any of those, I have not disturbed their existing code.
3831 2. A hit in the callout cache for a specific address caused a log line with no
3832 reason for rejecting RCPT. Now it says "Previous (cached) callout
3833 verification failure".
3835 3. There was an off-by-one bug in the queryprogram router. An over-long
3836 return line was truncated at 256 instead of 255 characters, thereby
3837 overflowing its buffer with the terminating zero. As well as fixing this, I
3838 have increased the buffer size to 1024 (and made a note to document this).
3840 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
3841 when Exim is waiting for an SMTP response from a remote server, Exim
3842 restarts its select() call on the socket, thereby resetting its timeout.
3843 This is not a problem when such interrupts are rare. Somebody set up a cron
3844 job to run exiwhat every 2 minutes, which is less than the normal select()
3845 timeout (5 or 10 minutes). This meant that the select() timeout never
3846 kicked in because it was always reset. I have fixed this by comparing the
3847 time when an interrupt arrives with the time at the start of the first call
3848 to select(). If more time than the timeout has elapsed, the interrupt is
3849 treated as a timeout.
3851 5. Some internal re-factoring in preparation for the addition of Sieve
3852 extensions (by MH). In particular, the "personal" test is moved to a
3853 separate function, and given an option for scanning Cc: and Bcc: (which is
3854 not set for Exim filters).
3856 6. When Exim created an email address using the login of the caller as the
3857 local part (e.g. when creating a From: or Sender: header line), it was not
3858 quoting the local part when it contained special characters such as @.
3860 7. Installed new OpenBSD configuration files.
3862 8. Reworded some messages for syntax errors in "and" and "or" conditions to
3863 try to make them clearer.
3865 9. Callout options, other than the timeout value, were being ignored when
3866 verifying sender addresses in header lines. For example, when using
3868 verify = header_sender/callout=no_cache
3870 the cache was (incorrectly) being used.
3872 10. Added a missing instance of ${EXE} to the exim_install script; this affects
3873 only the Cygwin environment.
3875 11. When return_path_on_delivery was set as a log selector, if different remote
3876 addresses in the same message used different return paths and parallel
3877 remote delivery occurred, the wrong values would sometimes be logged.
3878 (Whenever a remote delivery process finished, the return path value from
3879 the most recently started remote delivery process was logged.)
3881 12. RFC 3848 specifies standard names for the "with" phrase in Received: header
3882 lines when AUTH and/or TLS are in use. This is the "received protocol"
3883 field. Exim used to use "asmtp" for authenticated SMTP, without any
3884 indication (in the protocol name) for TLS use. Now it follows the RFC and
3885 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
3886 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
3887 names appear in log lines as well as in Received: header lines.
3889 13. Installed MH's patches for Sieve to add the "copy" and "vacation"
3890 extensions, and comparison tests, and to fix some bugs.
3892 14. Changes to the "personal" filter test:
3894 (1) The test was buggy in that it was just doing the equivalent of
3895 "contains" tests on header lines. For example, if a user's address was
3896 anne@some.where, the "personal" test would incorrectly be true for
3898 To: susanne@some.where
3900 This test is now done by extracting each address from the header in turn,
3901 and checking the entire address. Other tests that are part of "personal"
3902 are now done using regular expressions (for example, to check local parts
3903 of addresses in From: header lines).
3905 (2) The list of non-personal local parts in From: addresses has been
3906 extended to include "listserv", "majordomo", "*-request", and "owner-*",
3907 taken from the Sieve specification recommendations.
3909 (3) If the message contains any header line starting with "List-" it is
3910 treated as non-personal.
3912 (4) The test for "circular" in the Subject: header line has been removed
3913 because it now seems ill-conceived.
3915 15. Minor typos in src/EDITME comments corrected.
3917 16. Installed latest exipick from John Jetmore.
3919 17. If headers_add on a router specified a text string that was too long for
3920 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
3921 of string_sprintf() is now avoided.
3923 18. $message_body_size was not set (it was always zero) when running the DATA
3924 ACL and the local_scan() function.
3926 19. For the "mail" command in an Exim filter, no default was being set for
3927 the once_repeat time, causing a random time value to be used if "once" was
3928 specified. (If the value happened to be <= 0, no repeat happened.) The
3929 default is now 0s, meaning "never repeat". The "vacation" command was OK
3930 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
3931 (I found it when inspecting the code).
3933 20. There is now an overall timeout for performing a callout verification. It
3934 defaults to 4 times the callout timeout, which applies to individual SMTP
3935 commands during the callout. The overall timeout applies when there is more
3936 than one host that can be tried. The timeout is checked before trying the
3937 next host. This prevents very long delays if there are a large number of
3938 hosts and all are timing out (e.g. when the network connections are timing
3939 out). The value of the overall timeout can be changed by specifying an
3940 additional sub-option for "callout", called "maxwait". For example:
3942 verify = sender/callout=5s,maxwait=20s
3944 21. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
3945 to the end before writing, but this should make it even safer).
3947 22. Exim was forgetting that it had advertised PIPELINING for the second and
3948 subsequent messages on an SMTP connection. It was also not resetting its
3949 memory on STARTTLS and an internal HELO.
3951 23. When Exim logs an SMTP synchronization error within a session, it now
3952 records whether PIPELINING has been advertised or not.
3954 24. Added 3 instances of "(long int)" casts to time_t variables that were being
3955 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3956 rather than long int.
3958 25. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3960 26. Added the never_mail option to autoreply.
3966 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3967 crash if the getsockname() call failed; this can happen if a connection is
3968 closed very soon after it is established. The problem was simply in the
3969 order in which certain operations were done, causing Exim to try to write
3970 to the SMTP stream before it had set up the file descriptor. The bug has
3971 been fixed by making things happen in the correct order.
3977 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3978 before the connection was closed, thus losing the rejection response.
3980 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3981 some early Solaris releases, but causes trouble in current releases where
3982 socklen_t is defined.
3984 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3987 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3990 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3991 that releasing the top of it at the end releases what was used for sub-
3992 expansions (unless the block got too big). However, discard this block if
3993 the first thing is a variable or header, so that we can use its block when
3994 it is dynamic (useful for very large $message_headers, for example).
3996 6. Lookups now cache *every* query, not just the most recent. A new, separate
3997 store pool is used for this. It can be recovered when all lookup caches are
3998 flushed. Lookups now release memory at the end of their result strings.
3999 This has involved some general refactoring of the lookup sources.
4001 7. Some code has been added to the store_xxx() functions to reduce the amount
4002 of flapping under certain conditions.
4004 8. log_incoming_interface used to affect only the <= reception log lines. Now
4005 it causes the local interface and port to be added to several more SMTP log
4006 lines, for example "SMTP connection from", and rejection lines.
4008 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
4010 10. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
4012 11. If $host_data was set by virtue of a hosts lookup in an ACL, its value
4013 could be overwritten at the end of the current message (or the start of a
4014 new message if it was set in a HELO ACL). The value is now preserved for
4015 the duration of the SMTP connection.
4017 12. If a transport had a headers_rewrite setting, and a matching header line
4018 contained an unqualified address, that address was qualified, even if it
4019 did not match any rewriting rules. The underlying bug was that the values
4020 of the flags that permit the existence of unqualified sender and recipient
4021 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
4022 non-local messages, and by -bnq for local messages) were not being
4023 preserved with the message after it was received.
4025 13. When Exim was logging an SMTP synchronization error, it could sometimes log
4026 "next input=" as part of the text comprising the host identity instead of
4027 the correct text. The code was using the same buffer for two different
4028 strings. However, depending on which order the printing function evaluated
4029 its arguments, the bug did not always show up. Under Linux, for example, my
4030 test suite worked just fine.
4032 14. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
4033 doesn't work with some older versions of Perl. It has been changed to "my",
4034 which in any case is probably the better facility to use.
4036 15. A really picky compiler found some instances of statements for creating
4037 error messages that either had too many or two few arguments for the format
4040 16. The size of the buffer for calls to the DNS resolver has been increased
4041 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
4042 for addresses that have a lot of PTR records. This alleviates a problem; it
4043 does not fully solve it.
4045 17. A dnsdb lookup for PTR records that receives more data than will fit in the
4046 buffer now truncates the list and logs the incident, which is the same
4047 action as happens when Exim is looking up a host name and its aliases.
4048 Previously in this situation something unpredictable would happen;
4049 sometimes it was "internal error: store_reset failed".
4051 18. If a server dropped the connection unexpectedly when an Exim client was
4052 using GnuTLS and trying to read a response, the client delivery process
4053 crashed while trying to generate an error log message.
4055 19. If a "warn" verb in an ACL added multiple headers to a message in a single
4056 string, for example:
4058 warn message = H1: something\nH2: something
4060 the text was added as a single header line from Exim's point of view
4061 though it ended up OK in the delivered message. However, searching for the
4062 second and subsequent header lines using $h_h2: did not work. This has been
4063 fixed. Similarly, if a system filter added multiple headers in this way,
4064 the routers could not see them.
4066 20. Expanded the error message when iplsearch is called with an invalid key to
4067 suggest using net-iplsearch in a host list.
4069 21. When running tests using -bh, any delays imposed by "delay" modifiers in
4070 ACLs are no longer actually imposed (and a message to that effect is
4073 22. If a "gecos" field in a passwd entry contained escaped characters, in
4074 particular, if it contained a \" sequence, Exim got it wrong when building
4075 a From: or a Sender: header from that name. A second bug also caused
4076 incorrect handling when an unquoted " was present following a character
4077 that needed quoting.
4079 23. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
4080 was not being matched caselessly.
4082 24. Arranged for all hyphens in the exim.8 source to be escaped with
4085 25. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
4086 properly. Recipient callout cache records were still being keyed to include
4087 the sender, even when use_sender was set false. This led to far more
4088 callouts that were necessary. The sender is no longer included in the key
4089 when use_sender is false.
4091 26. Added "control = submission" modifier to ACLs.
4093 27. Added the ${base62d: operator to decode base 62 numbers.
4095 28. dnsdb lookups can now access SRV records.
4097 29. CONFIGURE_OWNER can be set at build time to define an alternative owner for
4098 the configuration file.
4100 30. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
4101 (-v) mode. This makes the output for a verbose queue run more intelligible.
4103 31. Added a use_postmaster feature to recipient callouts.
4105 32. Added the $body_zerocount variable, containing the number of binary zero
4106 bytes in the message body.
4108 33. The time of last modification of the "new" subdirectory is now used as the
4109 "mailbox time last read" when there is a quota error for a maildir
4112 34. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
4114 35. Added +ignore_unknown as a special item in host lists.
4116 36. Code for decoding IPv6 addresses in host lists is now included, even if
4117 IPv6 support is not being compiled. This fixes a bug in which an IPv6
4118 address was recognized as an IP address, but was then not correctly decoded
4119 into binary, causing unexpected and incorrect effects when compared with
4126 1. Very minor rewording of debugging text in manualroute to say "list of
4127 hosts" instead of "hostlist".
4129 2. If verify=header_syntax was set, and a header line with an unqualified
4130 address (no domain) and a large number of spaces between the end of the
4131 name and the colon was received, the reception process suffered a buffer
4132 overflow, and (when I tested it) crashed. This was caused by some obsolete
4133 code that should have been removed. The fix is to remove it!
4135 3. When running in the test harness, delay a bit after writing a bounce
4136 message to get a bit more predictability in the log output.
4138 4. Added a call to search_tidyup() just before forking a reception process. In
4139 theory, someone could use a lookup in the expansion of smtp_accept_max_
4140 per_host which, without the tidyup, could leave open a database connection.
4142 5. Added the variables $recipient_data and $sender_data which get set from a
4143 lookup success in an ACL "recipients" or "senders" condition, or a router
4144 "senders" option, similar to $domain_data and $local_part_data.
4146 6. Moved the writing of debug_print from before to after the "senders" test
4149 7. Change 4.31/66 (moving the time when the Received: is generated) caused
4150 problems for message scanning, either using a data ACL, or using
4151 local_scan() because the Received: header was not generated till after they
4152 were called (in order to set the time as the time of reception completion).
4153 I have revised the way this works. The header is now generated after the
4154 body is received, but before the ACL or local_scan() are called. After they
4155 are run, the timestamp in the header is updated.
4161 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
4162 before starting a queue runner without re-exec. This happened only when
4163 deliver_drop_privilege was set or when the Exim user was set to root. The
4164 effect of the bug was that timeouts during subsequent deliveries caused
4165 crashes instead of being properly handled. The handler is now left at its
4166 default (and expected) setting.
4168 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
4169 message, again when deliver_drop_privilege is set or Exim is run as root.
4170 The bug described in (1) was not present in this case, but the tidying up
4171 of the other signals was missing. I have made the two cases consistent.
4173 3. The ignore_target_hosts setting on a manualroute router was being ignored
4174 for hosts that were looked up using the /MX notation.
4176 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
4179 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
4180 operated on the sender address. After changing the $sender_address to <>
4181 for the sender address verify, Exim was re-instated it as the original
4182 (before rewriting) address, but remembering that it had rewritten it, so it
4183 wasn't rewriting it again. This bug also had the effect of breaking the
4184 sender address verification caching when the sender address was rewritten.
4186 6. The ignore_target_hosts option was being ignored by the ipliteral router.
4187 This has been changed so that if the ip literal address matches
4188 ignore_target_hosts, the router declines.
4190 7. Added expansion conditions match_domain, match_address, and match_local_
4191 part (NOT match_host).
4193 8. The placeholder for the Received: header didn't have a length field set.
4195 9. Added code to Exim itself and to exim_lock to test for a specific race
4196 condition that could lead to file corruption when using MBX delivery. The
4197 issue is with the lockfile that is created in /tmp. If this file is removed
4198 after a process has opened it but before that process has acquired a lock,
4199 there is the potential for a second process to recreate the file and also
4200 acquire a lock. This could lead to two Exim processes writing to the file
4201 at the same time. The added code performs the same test as UW imapd; it
4202 checks after acquiring the lock that its file descriptor still refers to
4203 the same named file.
4205 10. The buffer for building added header lines was of fixed size, 8192 bytes.
4206 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
4209 11. Added the smtp_active_hostname option. If used, this will typically be made
4210 to depend on the incoming interface address. Because $interface_address is
4211 not set up until the daemon has forked a reception process, error responses
4212 that can happen earlier (such as "too many connections") no longer contain
4215 12. If an expansion in a condition on a "warn" statement fails because a lookup
4216 defers, the "warn" statement is abandoned, and the next ACL statement is
4217 processed. Previously this caused the whole ACL to be aborted.
4219 13. Added the iplsearch lookup type.
4221 14. Added ident_timeout as a log selector.
4223 15. Added tls_certificate_verified as a log selector.
4225 16. Added a global option tls_require_ciphers (compare the smtp transport
4226 option of the same name). This controls incoming TLS connections.
4228 17. I finally figured out how to make tls_require_ciphers do a similar thing
4229 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
4230 before starting the TLS session.
4232 18. Tabs are now shown as \t in -bP output.
4234 19. If the log selector return_path_on_delivery was set, Exim crashed when
4235 bouncing a message because it had too many Received: header lines.
4237 20. If two routers both had headers_remove settings, and the first one included
4238 a superfluous trailing colon, the final name in the first list and the
4239 first name in the second list were incorrectly joined into one item (with a
4240 colon in the middle).
4246 1. Added -C and -D options to the exinext utility, mainly to make it easier
4247 to include in the automated testing, but these could be helpful when
4248 multiple configurations are in use.
4250 2. The exinext utility was not formatting the output nicely when there was
4251 an alternate port involved in the retry record key, nor when there was a
4252 message id as well (for retries that were specific to a specific message
4253 and a specific host). It was also confused by IPv6 addresses, because of
4254 the additional colons they contain. I have fixed the IPv4 problem, and
4255 patched it up to do a reasonable job for IPv6.
4257 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
4258 delivery, the log line now contains "pipelined" if PIPELINING was used.
4260 4. An SMTP transport process used to panic and die if the bind() call to set
4261 an explicit outgoing interface failed. This has been changed; it is now
4262 treated in the same way as a connect() failure.
4264 5. A reference to $sender_host_name in the part of a conditional expansion
4265 that was being skipped was still causing a DNS lookup. This no longer
4268 6. The def: expansion condition was not recognizing references to header lines
4269 that used bh_ and bheader_.
4271 7. Added the _cache feature to named lists.
4273 8. The code for checking quota_filecount in the appendfile transport was
4274 allowing one more file than it should have been.
4276 9. For compatibility with Sendmail, the command line option
4284 and sets the incoming protocol and host name (for trusted callers). The
4285 host name and its colon can be omitted when only the protocol is to be set.
4286 Note the Exim already has two private options, -pd and -ps, that refer to
4287 embedded Perl. It is therefore impossible to set a protocol value of "d" or
4288 "s", but I don't think that's a major issue.
4290 10. A number of refactoring changes to the code, none of which should affect
4293 (a) The number of logging options was getting close to filling up the
4294 32-bit word that was used as a bit map. I have split them into two classes:
4295 those that are passed in the argument to log_write(), and those that are
4296 only ever tested independently outside of that function. These are now in
4297 separate 32-bit words, so there is plenty of room for expansion again.
4298 There is no change in the user interface or the logging behaviour.
4300 (b) When building, for example, log lines, the code previously used a
4301 macro that called string_cat() twice, in order to add two strings. This is
4302 not really sufficiently general. Furthermore, there was one instance where
4303 it was actually wrong because one of the argument was used twice, and in
4304 one call a function was used. (As it happened, calling the function twice
4305 did not affect the overall behaviour.) The macro has been replaced by a
4306 function that can join an arbitrary number of extra strings onto a growing
4309 (c) The code for expansion conditions now uses a table and a binary chop
4310 instead of a serial search (which was left over from when there were very
4311 few conditions). Also, it now recognizes conditions like "pam" even when
4312 the relevant support is not compiled in: a suitably worded error message is
4313 given if an attempt is made to use such a condition.
4315 11. Added ${time_interval:xxxxx}.
4317 12. A bug was causing one of the ddress fields not to be passed back correctly
4318 from remote delivery subprocesses. The field in question was not being
4319 subsequently used, so this caused to problems in practice.
4321 13. Added new log selectors queue_time and deliver_time.
4323 14. Might have fixed a bug in maildirsizefile handling that threw up
4324 "unexpected character" debug warnings, and recalculated the data
4325 unnecessarily. In any case, I expanded the warning message to give more
4328 15. Added the message "Restricted characters in address" to the statements in
4329 the default ACL that block characters like @ and % in local parts.
4331 16. Change 71 for release 4.31 proved to be much less benign that I imagined.
4332 Three changes have been made:
4334 (a) There was a serious bug; a negative response to MAIL caused the whole
4335 recipient domain to be cached as invalid, thereby blocking all messages
4336 to all local parts at the same domain, from all senders. This bug has
4337 been fixed. The domain is no longer cached after a negative response to
4338 MAIL if the sender used is not empty.
4340 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
4343 (c) A new callout option, "use_sender" has been added for people who want
4344 the modified behaviour.
4350 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
4353 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
4354 indeed breaks things for older releases.
4356 3. Added additional logging to the case where there is a problem reading data
4357 from a filter that is running in a subprocess using a pipe, in order to
4358 try to track down a specific problem.
4360 4. Testing facility fudge: when running in the test harness and attempting
4361 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
4362 getting "No route to host". Convert this to a timeout.
4364 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
4367 6. Some OS don't have socklen_t but use size_t instead. This affects the
4368 fifth argument of getsockopt() amongst other things. This is now
4369 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
4370 can be set for individual OS. I have set it for SunOS5, OSF1, and
4371 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
4372 some earlier ones do not.
4374 7. Change 4.30/15 was not doing the test caselessly.
4376 8. The standard form for an IPv6 address literal was being rejected by address
4377 parsing in, for example, MAIL and RCPT commands. An example of this kind of
4378 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
4379 this, as well as the form without the "IPv6" on the front (but only when
4380 address literals are enabled, of course).
4382 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
4384 10. Exim crashed if a message with an empty sender address specified by -f
4385 encountered a router with an errors_to setting. This could be provoked only
4386 by a command such as
4390 where an empty string was supplied; "<>" did not hit this bug.
4392 11. Installed PCRE release 4.5.
4394 12. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
4395 remained set. It is now erased.
4397 13. exiqgrep wasn't working on MacOS X because it didn't correctly compute
4398 times from message ids (which are base 36 rather than the normal 62).
4400 14. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
4401 were being counted as actual protocol errors, and logged if the log
4402 selector +smtp_protocol_error was set. One cannot be perfect in this test,
4403 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
4404 and DATA following a set of rejected RCPTs do not count as protocol errors.
4405 In other words, Exim assumes they were pipelined, though this may not
4406 actually be the case. Of course, in all cases the client gets an
4407 appropriate error code.
4409 15. If a lookup fails in an ACL condition, a message about the failure may
4410 be available; it is used if testing the ACL cannot continue, because most
4411 such messages specify what the cause of the deferral is. However, some
4412 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
4413 that caused an old message to be retained and used if a later statement
4414 caused a defer, replacing the real cause of the deferral.
4416 16. If an IP address had so many PTR records that the DNS lookup buffer
4417 was not large enough to hold them, Exim could crash while trying to process
4418 the truncated data. It now detects and logs this case.
4420 17. Further to 4.21/58, another change has been made: if (and only if) the
4421 first line of a message (the first header line) ends with CRLF, a bare LF
4422 in a subsequent header line has a space inserted after it, so as not to
4423 terminate the header.
4425 18. Refactoring: tidied an ugly bit of code in appendfile that copied data
4426 unnecessarily, used atoi() instead of strtol(), and didn't check the
4427 termination when getting file sizes from file names by regex.
4429 19. Completely re-implemented the support for maildirsize files, in the light
4430 of a number of problems with the previous contributed implementation
4431 (4.30/29). In particular:
4433 . If the quota is zero, the maildirsize file is maintained, but no quota is
4436 . If the maildir directory does not exist, it is created before any attempt
4437 to write a maildirsize file.
4439 . The quota value in the file is just a cache; if the quota is changed in
4440 the transport, the new value overrides.
4442 . A regular expression is available for excluding directories from the
4445 20. The autoreply transport checks the characters in options that define the
4446 message's headers; it allows continued headers, but it was checking with
4447 isspace() after an embedded newline instead of explicitly looking for a
4450 21. If all the "regular" hosts to which an address was routed had passed their
4451 expiry times, and had not reached their retry times, the address was
4452 bounced, even if fallback hosts were defined. Now Exim should go on to try
4455 22. Increased buffer sizes in the callout code from 1024 to 4096 to match the
4456 equivalent code in the SMTP transport. Some hosts send humungous responses
4457 to HELO/EHLO, more than 1024 it seems.
4459 23. Refactoring: code in filter.c used (void *) for "any old type" but this
4460 gives compiler warnings in some environments. I've now done it "properly",
4463 24. The replacement for inet_ntoa() that is used with gcc on IRIX systems
4464 (because of problems with the built-in one) was declared to return uschar *
4465 instead of char *, causing compiler failure.
4467 25. Fixed a file descriptor leak when processing alias/forward files.
4469 26. Fixed a minor format string issue in dbfn.c.
4471 27. Typo in exim.c: ("dmbnz" for "dbmnz").
4473 28. If a filter file refered to $h_xxx or $message_headers, and the headers
4474 contained RFC 2047 "words", Exim's memory could, under certain conditions,
4477 29. When a sender address is verified, it is cached, to save repeating the test
4478 when there is more than one recipient in a message. However, when the
4479 verification involves a callout, it is possible for different callout
4480 options to be set for different recipients. It is too complicated to keep
4481 track of this in the cache, so now Exim always runs a verification when a
4482 callout is required, relying on the callout cache for the optimization.
4483 The overhead is duplication of the address routing, but this should not be
4486 30. Fixed a bug in callout caching. If a RCPT command caused the sender address
4487 to be verified with callout=postmaster, and the main callout worked but the
4488 postmaster check failed, the verification correctly failed. However, if a
4489 subsequent RCPT command asked for sender verification *without* the
4490 postmaster check, incorrect caching caused this verification also to fail,
4493 31. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
4494 it was not caching the DNS options (qualify_single, search_parents) that
4495 were used when the lookup failed. A subsequent lookup with different
4496 options therefore always gave the same answer, though there were cases
4497 where it should not have. (Example: a "domains = !$mx_any" option on a
4498 dnslookup router: the "domains" option is always processed without any
4499 widening, but the router might have qualify_single set.) Now Exim uses the
4500 cached value only when the same options are set.
4502 32. Added John Jetmore's "exipick" utility to the distribution.
4504 33. GnuTLS: When an attempt to start a TLS session fails for any reason other
4505 than a timeout (e.g. a certificate is required, and is not provided), an
4506 Exim server now closes the connection immediately. Previously it waited for
4507 the client to close - but if the client is SSL, it seems that they each
4508 wait for each other, leading to a delay before one of them times out.
4510 34: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
4511 maintained 0.8.x compatibility because I don't think many are using it, and
4512 it is clearly obsolete.
4514 35. Added TLS support for CRLs: a tls_crl global option and one for the smtp
4517 36. OpenSSL: $tls_certificate_verified was being set to 1 even if the
4518 client certificate was expired. A simple patch fixes this, though I don't
4519 understand the full logic of why the verify callback is called multiple
4522 37. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
4523 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
4524 which causes problems with some clients (such as the Certicom SSL Plus
4525 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
4526 disables the coutermeasure allowing Eudora to connect."
4528 38. Exim was not checking that a write() to a log file succeeded. This could
4529 lead to Bad Things if a log got too big, in particular if it hit a file
4530 size limit. Exim now panics and dies if it cannot write to a log file, just
4531 as it does if it cannot open a log file.
4533 39. Modified OS/Makefile-Linux so that it now contains
4535 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
4537 The two -D definitions ensure that Exim is compiled with large file
4538 support, which makes it possible to handle log files that are bigger than
4541 40. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
4542 instance) a domain was checked against a named list that involved a lookup,
4543 causing $domain_data to be set, then another domain was checked against the
4544 same list, then the first domain was re-checked, the value of $domain_data
4545 after the final check could be wrong. In particular, if the second check
4546 failed, it could be set empty. This bug probably also applied to
4549 41. The strip_trailing_dot option was not being applied to the address given
4550 with the -f command-line option.
4552 42. The code for reading a message's header from the spool was incrementing
4553 $received_count, but never initializing it. This meant that the value was
4554 incorrect (doubled) while delivering a message in the same process in which
4555 it was received. In the most common configuration of Exim, this never
4556 happens - a fresh exec is done - but it can happen when
4557 deliver_drop_privilege is set.
4559 43. When Exim logs an SMTP synchronization error - client data sent too soon -
4560 it now includes up to 150 characters of the unexpected data in the log
4563 44. The exim_dbmbuild utility uses fixed size buffers for reading input lines
4564 and building data strings. The size of both of these buffers was 10 000
4565 bytes - far larger than anybody would *ever* want, thought I. Needless to
4566 say, somebody hit the limit. I have increased the maximum line length to
4567 20 000 and the maximum data length of concatenated lines to 100 000. I have
4568 also fixed two bugs, because there was no checking on these buffers. Tsk,
4569 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
4570 buffer is too small.
4572 45. The exim_dbmbuild utility did not support quoted keys, as Exim does in
4573 lsearch lookups. Now it does.
4575 46. When parsing a route_list item in a manualroute router, a fixed-length
4576 buffer was used for the list of hosts. I made this 1024 bytes long,
4577 thinking that nobody would ever have a list of hosts that long. Wrong.
4578 Somebody had a whole pile of complicated expansion conditions, and the
4579 string was silently truncated, leading to an expansion error. It turns out
4580 that it is easier to change to an unlimited length (owing to other changes
4581 that have happened since this code was originally written) than to build
4582 structure for giving a limitation error. The length of the item that
4583 expands into the list of hosts is now unlimited.
4585 47. The lsearch lookup could not handle data where the length of text line was
4586 more than 4095 characters. Such lines were truncated, leading to shortened
4587 data being returned. It should now handle lines of any length.
4589 48. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
4590 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
4593 49. Cosmetic tidy to scripts like exicyclog that are generated by globally
4594 replacing strings such as BIN_DIRECTORY in a source file: the replacement
4595 no longer happens in comment lines. A list of replacements is now placed
4596 at the head of all of the source files, except those whose only change is
4597 to replace PERL_COMMAND in the very first #! line.
4599 50. Replaced the slow insertion sort in queue.c, for sorting the list of
4600 messages on the queue, with a bottom-up merge sort, using code contributed
4601 by Michael Haardt. This should make operations like -bp somewhat faster on
4602 large queues. It won't affect queue runners, except when queue_run_in_order
4605 51. Installed eximstats 1.31 in the distribution.
4607 52. Added support for SRV lookups to the dnslookup router.
4609 53. If an ACL referred to $message_body or $message_body_end, the value was not
4610 reset for any messages that followed in the same SMTP session.
4612 54. The store-handling optimization for building very long strings was not
4613 differentiating between the different store pools. I don't think this
4614 actually made any difference in practice, but I've tidied it.
4616 55. While running the routers to verify a sender address, $sender_address
4617 was still set to the sender address. This is wrong, because when routing to
4618 send a bounce to the sender, it would be empty. Therefore, I have changed
4619 it so that, while verifying a sender address, $sender_address is set to <>.
4620 (There is no change to what happens when verifying a recipient address.)
4622 56. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
4623 target A or AAAA records (if not already returned) without resetting the
4624 qualify_single or search_parents options of the DNS resolver. These are
4625 inappropriate in this case because the targets of MX and SRV records must
4626 be FQDNs. A broken DNS record could cause trouble if it happened to have a
4627 target that, when qualified, matched something in the local domain. These
4628 two options are now turned off when doing these lookups.
4630 57. It seems that at least some releases of Reiserfs (which does not have the
4631 concept of a fixed number of inodes) returns zero and not -1 for the
4632 number of available inodes. This interacted badly with check_spool_inodes,
4633 which assumed that -1 was the "no such thing" setting. What I have done is
4634 to check that the total number of inodes is greater than zero before doing
4635 the test of how many are available.
4637 58. When a "warn" ACL statement has a log_message modifier, the message is
4638 remembered, and not repeated. This is to avoid a lot of repetition when a
4639 message has many recipients that cause the same warning to be written.
4640 Howewer, Exim was preserving the list of already written lines for an
4641 entire SMTP session, which doesn't seem right. The memory is now reset if a
4642 new message is started.
4644 59. The "rewrite" debugging flag was not showing the result of rewriting in the
4645 debugging output unless log_rewrite was also set.
4647 60. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
4648 of (int)(handle) when we know that handle contains (void *)(-1).
4650 61. The Exim daemon panic-logs an error return when it closes the incoming
4651 connection. However "connection reset by peer" seems to be common, and
4652 isn't really an error worthy of noting specially, so that particular error
4655 62. When Exim is trying to find all the local interfaces, it used to panic and
4656 die if the ioctl to get the interface flags failed. However, it seems that
4657 on at least one OS (Solaris 9) it is possible to have an interface that is
4658 included in the list of interfaces, but for which you get a failure error
4659 for this call. This happens when the interface is not "plumbed" into a
4660 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
4661 failure of the "get flags" call assumes that the interface is down.
4663 63. Added a ${eval10: operator, which assumes all numbers are decimal. This
4664 makes life easier for people who are doing arithmetic on fields extracted
4665 from dates, where you often get leading zeros that should not be
4666 interpreted as octal.
4668 64. Added qualify_domain to the redirect router, to override the global
4671 65. If a pathologically long header line contained very many addresses (the
4672 report of this problem mentioned 10 000) and each of them was rewritten,
4673 Exim could use up a very large amount of memory. (It kept on making new
4674 copies of the header line as it rewrote, and never released the old ones.)
4675 At the expense of a bit more processing, the header rewriting function has
4676 been changed so that it no longer eats memory in this way.
4678 66. The generation of the Received: header has been moved from the time that a
4679 message starts to be received, to the time that it finishes. The timestamp
4680 in the Received: header should now be very close to that of the <= log
4681 line. There are two side-effects of this change:
4683 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
4684 logged header lines no longer include the local Received: line, because
4685 it has not yet been created. The same applies to a copy of the message
4686 that is returned to a non-SMTP sender when a message is rejected.
4688 (b) When a filter file is tested using -bf, no additional Received: header
4689 is added to the test message. After some thought, I decided that this
4692 This change does not affect the value of $received_for. It is still set
4693 after address rewriting, but before local_scan() is called.
4695 67. Installed the latest Cygwin-specific files from the Cygwin maintainer.
4697 68. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
4698 gave an unhelpful panic error message, and a defer error. I have managed to
4699 change this behaviour so that it now rejects any supplied certificate,
4700 which seems right, as the list of acceptable certificates is empty.
4702 69. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
4703 gave an unhelpful defer error. I have not managed to make this reject any
4704 supplied certificates, but the error message it gives is "no certificate
4705 supplied", which is not helpful.
4707 70. exigrep's output now also includes lines that are not associated with any
4708 message, but which match the given pattern. Implemented by a patch from
4709 Martin Sluka, which also tidied up the Perl a bit.
4711 71. Recipient callout verification, like sender verification, was using <> in
4712 the MAIL FROM command. This isn't really the right thing, since the actual
4713 sender may affect whether the remote host accepts the recipient or not. I
4714 have changed it to use the actual sender in the callout; this means that
4715 the cache record is now keyed on a recipient/sender pair, not just the
4716 recipient address. There doesn't seem to be a real danger of callout loops,
4717 since a callout by the remote host to check the sender would use <>.
4718 [SEE ABOVE: changed after hitting problems.]
4720 72. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
4721 temporary errors. However, in the case of such a code being given after
4722 the end of a data transmission (i.e. after ".") Exim was failing to write
4723 a retry record for the message. (Yes, there was some broken host that was
4724 actually sending 8xx at this point.)
4726 73. An unknown lookup type in a host list could cause Exim to panic-die when
4727 the list was checked. (An example that provoked this was putting <; in the
4728 middle of a list instead of at the start.) If this happened during a DATA
4729 ACL check, a -D file could be left lying around. This kind of configuration
4730 error no longer causes Exim to die; instead it causes a defer errror. The
4731 incident is still logged to the main and panic logs.
4733 74. Buglet left over from Exim 3 conversion. The message "too many messages
4734 in one connection" was written to the rejectlog but not the mainlog, except
4735 when address rewriting (yes!) was being logged.
4737 75. Added write_rejectlog option.
4739 76. When a system filter was run not as root (that is, when system_filter_user
4740 was set), the values of the $n variables were not being returned to the
4741 main process; thus, they were not subsequently available in the $sn
4744 77. Added +return_path_on_delivery log selector.
4746 78. A connection timeout was being treated differently from recipients deferred
4747 when testing hosts_max_try with a message that was older than the host's
4748 retry timeout. (The host should not be counted, thus allowing all hosts to
4749 be tried at least once before bouncing.) This may have been the cause of an
4750 occasionally reported bug whereby a message would remain on the queue
4751 longer than the retry timeout, but would be bounced if a delivery was
4752 forced. I say "may" because I never totally pinned down the problem;
4753 setting up timeout/retry tests is difficult. See also the next item.
4755 79. The ultimate address timeout was not being applied to errors that involved
4756 a combination of host plus message (for example, a timeout on a MAIL
4757 command). When an address resolved to a number of possible hosts, and they
4758 were not all tried for each delivery (e.g. because of hosts_max_try), a
4759 message could remain on the queue longer than the retry timeout.
4761 80. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
4764 81. Fixed an obscure SMTP outgoing bug which required at least the following
4765 conditions: (a) there was another message waiting for the same server;
4766 (b) the server returned 5xx to all RCPT commands in the first message so
4767 that the message was not completed; (c) the server dropped the connection
4768 or gave a negative response to the RSET that Exim sends to abort the
4769 transaction. The observed case was a dropped connection after DATA that had
4770 been sent in pipelining mode. That is, the server had advertised PIPELINING
4771 but was not implementing it correctly. The effect of the bug was incorrect
4772 behaviour, such as trying another host, and this could lead to a crash.
4778 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
4779 and daemon.c were passed as pointers to ints; they should have been
4780 pointers to socklen_t variables (which are typically unsigned ints).
4782 2. Some signed/unsigned type warnings in the os.c file for Linux have been
4785 3. Fixed a really odd bug that affected only the testing scheme; patching a
4786 certain fixed string in the binary changed the value of another string that
4787 happened to be identical to the end of the original first string.
4789 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
4790 name", it returns that address as the IP address. On some operating
4791 systems (e.g. Solaris), it also passes back the IP address string as the
4792 "host name". However, on others (e.g. Linux), it passes back an empty
4793 string. Exim wasn't checking for this, and was changing the host name to an
4794 empty string, assuming it had been canonicized.
4796 5. Although rare, it is permitted to have more than one PTR record for a given
4797 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
4798 all the names associated with an address, because they do in Solaris.
4799 However, it seems that they do not in Linux for data that comes from the
4800 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
4801 I found this out when I moved to a new Linux workstation and tried to run
4802 the Exim test suite.
4804 To get round this problem I have changed the code so that it now does its
4805 own call to the DNS to look up PTR records when searching for a host name.
4806 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
4807 addresses that are only in /etc/hosts are still found.
4809 This behaviour is, however, controlled by an option called host_lookup_
4810 order, which defaults to "bydns:byaddr". If people want to use the other
4811 order, or indeed, just use one or the other means of lookup, they can
4812 specify it in this variable.
4814 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
4815 some operating systems, this comes back from gethostbyaddr() as an empty
4816 string, and this is what Exim used to test for. However, it seems that in
4817 other systems, "." is yielded. Exim now tests for this case too.
4819 7. The values of check_spool_space and check_log_space are now held internally
4820 as a number of kilobytes instead of an absolute number of bytes. If a
4821 numbers is specified without 'K' or 'M', it is rounded up to the nearest
4822 kilobyte. This means that much larger values can be stored.
4824 8. Exim monitor: an attempt to get the action menu when not actually pointing
4825 at a message produces an empty menu entitled "No message selected". This
4826 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
4827 no entries in it ("Shell widget menu has zero width and/or height"). So I
4828 have added a single, blank menu entry in this case.
4830 9. Added ${quote_local_part.
4832 10. MIME decoding is now applied to the contents of Subject: header lines when
4835 11. Now that a reference to $sender_host_address automatically causes a reverse
4836 lookup to occur if necessary (4.13/18), there is no need to arrange for a
4837 host lookup before query-style lookups in lists that might use this
4838 variable. This has therefore been abolished, and the "net-" prefix is no
4839 longer necessary for query-style lookups.
4841 12. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
4842 have been a typo for LFLAGS, so it has been changed.
4844 13. The install script calls Exim with "-C /dev/null" in order to find the
4845 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
4846 to be output. Howeve, since Exim outputs its version number before the
4847 error, it didn't break the script. It just looked ugly. I fixed this by
4848 always allowing "-C /dev/null" if the caller is root.
4850 14. Ignore overlarge ACL variable number when reading spool file - insurance
4851 against a later release with more variables having written the file.
4853 15. The standard form for an IPv6 address literal was being rejected by EHLO.
4854 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
4855 this, as well as the form without the "IPv6" on the front.
4857 16. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
4858 OS/Makefile-Darwin file.
4860 17. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
4861 only to LDAP libraries that do not have LDAP_OPT_DEREF.
4863 18. After change 4.21/52, "%ld" was used to format the contents of the $inode
4864 variable. However, some OS use ints for inodes. I've added cast to long int
4865 to get rid of the compiler warning.
4867 19. I had forgotten to lock out "/../" in configuration file names when
4868 ALT_CONFIG_PREFIX was set.
4870 20. Routers used for verification do not need to specify transports. However,
4871 if such a router generated a host list, and callout was configured, Exim
4872 crashed, because it could not find a port number from the (non-existent)
4873 transport. It now assumes port 25 in this circumstance.
4875 21. Added the -t option to exigrep.
4877 22. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
4878 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
4879 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
4880 them is set, LOOKUP_LSEARCH is forced.
4882 23. "exim -bV" now outputs a list of lookups that are included in the binary.
4884 24. Added sender and host information to the "rejected by local_scan()" log
4885 line; previously there was no indication of these.
4887 25. Added .include_if_exists.
4889 26. Change 3.952/11 added an explicit directory sync on top of a file sync for
4890 Linux. It turns out that not all file systems support this. Apparently some
4891 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
4892 do it.) To cope with this, the error EINVAL, which means that sync-ing is
4893 not supported on the file descriptor, is now ignored when Exim is trying to
4894 sync a directory. This applies only to Linux.
4896 27. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
4898 28. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
4899 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
4902 29. Added support for maildirsize files from supplied patch (modified a bit).
4904 30. The use of :fail: followed by an empty string could lead Exim to respond to
4905 sender verification failures with (e.g.):
4907 550 Verification failed for <xxx>
4908 550 Sender verify failed
4910 where the first response line was missing the '-' that indicates it is not
4911 the final line of the response.
4913 31. The loop for finding the name of the user that called Exim had a hardwired
4914 limit of 10; it now uses the value of finduser_retries, which is used for
4915 all other user lookups.
4917 32. Added $received_count variable, available in data and not_smtp ACLs, and at
4920 33. Exim was neglecting to zero errno before one call of strtol() when
4921 expanding a string and expecting an integer value. On some systems this
4922 resulted in spurious "integer overflow" errors. Also, it was casting the
4923 result into an int without checking.
4925 34. Testing for a connection timeout using "timeout_connect" in the retry rules
4926 did not work. The code looks as if it has *never* worked, though it appears
4927 to have been documented since at least releast 1.62. I have made it work.
4929 35. The "timeout_DNS" error in retry rules, also documented since at least
4930 1.62, also never worked. As it isn't clear exactly what this means, and
4931 clearly it isn't a major issue, I have abolished the feature by treating it
4932 as "timeout", and writing a warning to the main and panic logs.
4934 36. The display of retry rules for -brt wasn't always showing the error code
4937 37. Added new error conditions to retry rules: timeout_A, timeout_MX,
4938 timeout_connect_A, timeout_connect_MX.
4940 38. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
4941 to the empty sender.
4943 39. The daemon was not analysing the content of -oX till after it had closed
4944 stderr and disconnected from the controlling terminal. This meant that any
4945 syntax errors were only noted on the panic log, and the return code from
4946 the command was 0. By re-arranging the code a little, I've made the
4947 decoding happen first, so such errors now appear on stderr, and the return
4948 code is 1. However, the actual setting up of the sockets still happens in
4949 the disconnected process, so errors there are still only recorded on the
4952 40. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
4953 connections (as happens on some IP stacks) was logged at start up time as
4954 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
4955 it from "IPv6 and IPv4", which means that two separate sockets are being
4958 41. The debug output for gethostbyname2() or getipnodebyname() failures now
4959 says whether AF_INET or AF_INET6 was passed as an argument.
4961 42. Exiwhat output was messed up when time zones were included in log
4964 43. Exiwhat now gives more information about the daemon's listening ports,
4965 and whether -tls-on-connect was used.
4967 44. The "port" option of the smtp transport is now expanded.
4969 45. A "message" modifier in a "warn" statement in a non-message ACL was being
4970 silently ignored. Now an error message is written to the main and panic
4973 46. There's a new ACL modifier called "logwrite" which writes to a log file
4974 as soon as it is encountered.
4976 47. Added $local_user_uid and $local_user_gid at routing time.
4978 48. Exim crashed when trying to verify a sender address that was being
4981 49. Exim was recognizing only a space character after ".include". It now also
4982 recognizes a tab character.
4984 50. Fixed several bugs in the Perl script that creates the exim.8 man page by
4985 extracting the relevant information from the specification. The man page no
4986 longer contains scrambled data for the -d option, and I've added a section
4987 at the front about calling Exim under different names.
4989 51. Added "extra_headers" argument to the "mail" command in filter files.
4991 52. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
4994 53. Installed eximstats 1.29.
4996 54. Added transport_filter_timeout as a generic transport option.
4998 55. Exim no longer adds an empty Bcc: header to messages that have no To: or
4999 Cc: header lines. This was required by RFC 822, but it not required by RFC
5002 56. Exim used to add From:, Date:, and Message-Id: header lines to any
5003 incoming messages that did not have them. Now it does so only if the
5004 message originates locally, that is, if there is no associated remote host
5005 address. When Resent- header lines are present, this applies to the Resent-
5006 lines rather than the non-Resent- lines.
5008 57. Drop incoming SMTP connection after too many syntax or protocol errors. The
5009 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
5011 58. Messages for configuration errors now include the name of the main
5012 configuration file - useful now that there may be more than one file in a
5013 list (.included file names were always shown).
5015 59. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
5016 for those rare installations that do not start the daemon as root or run it
5017 setuid root. I've cut out the call to initgroups() if the daemon is not
5020 60. The Exim user and group can now be bound into the binary as text strings
5021 that are looked up at the start of Exim's processing.
5023 61. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
5025 62. Added $mailstore_basename variable.
5027 63. Installed patch to sieve.c from Michael Haardt.
5029 64. When Exim failed to open the panic log after failing to open the main log,
5030 the original message it was trying to log was written to stderr and debug
5031 output, but if they were not available (the usual case in production), it
5032 was lost. Now it is written to syslog before the two lines that record the
5033 failures to open the logs.
5035 65. Users' Exim filters run in subprocesses under the user's uid. It is
5036 possible for a "deliver" command or an alias in a "personal" command to
5037 provoke an address rewrite. If logging of address rewriting is configured,
5038 this fails because the process is not running as root or exim. There may be
5039 a better way of dealing with this, but for the moment (because 4.30 needs
5040 to be released), I have disabled address rewrite logging when running a
5041 filter in a non-root, non-exim process.
5047 1. The buildconfig auxiliary program wasn't quoting the value set for
5048 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
5049 not defined. This bug was masked in 4.22 by the effect that was fixed in
5052 2. Some messages that were rejected after a message id was allocated were
5053 shown as "incomplete" by exigrep. It no longer does this for messages that
5054 are rejected by local_scan() or the DATA or non-SMTP ACLs.
5056 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
5057 have allow_domain_literals set, the ID did not get logged in the <= line.
5058 Domain literals are now always recognized in Message-ID: header lines.
5060 4. The first argument for a ${extract expansion item is the key name or field
5061 number. Leading and trailing spaces in this item were not being ignored,
5062 causing some misleading effects.
5064 5. When deliver_drop_privilege was set, single queue runner processes started
5065 manually (i.e. by the command "exim -q") or by the daemon (which uses the
5066 same command in the process it spins off) were not dropping privilege.
5068 6. When the daemon running as "exim" started a queue runner, it always
5069 re-executed Exim in the spun-off process. This is a waste of effort when
5070 deliver_drop_privilege is set. The new process now just calls the
5071 queue-runner function directly.
5077 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
5080 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
5081 ignored. Though the use of -oP was forcing the writing of a pid file, it
5082 was always written to the default place.
5084 3. If the message "no IP address found for host xxxx" is generated during
5085 incoming verification, it is now followed by identification of the incoming
5086 connection (so you can more easily find what provoked it).
5088 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
5090 5. Added some features to "harden" Exim a bit more against certain attacks:
5092 (a) There is now a build-time option called FIXED_NEVER_USERS that can
5093 be put in Local/Makefile. This is like the never_users runtime option,
5094 but it cannot be overridden. The default setting is "root".
5096 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
5097 prefix string with which any file named in a -C command line option
5100 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
5101 is retained for -C and -D only if the caller of Exim is root. Without
5102 it, the exim user may also use -C and -D and retain privilege.
5104 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
5105 command line option is disabled.
5107 6. Macro names set by the -D option must start with an upper case letter, just
5108 like macro names defined in the configuration file.
5110 7. Added "dereference=" facility to LDAP.
5112 8. Two instances of the typo "uknown" in the source files are fixed.
5114 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
5115 the Configure-Makefile script screwed up while processing it.
5117 10. Incorporated PCRE 4.4.
5119 11. The SMTP synchronization check was not operating right at the start of an
5120 SMTP session. For example, it could not catch a HELO sent before the client
5121 waited for the greeting. There is now a check for outstanding input at the
5122 point when the greeting is written. Because of the duplex, asynchronous
5123 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
5124 way, but not yet received, when the check is performed.
5126 12. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
5127 on TCP/IP sockets, because this apparently causes some broken clients to
5130 13. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
5131 unchanged) from the Cygwin maintainer.
5133 14. The code for -bV that shows what is in the binary showed "mbx" when maildir
5134 was supported instead of testing for mbx. Effectively a typo.
5136 15. The spa authenticator server code was not checking that the input it
5137 received was valid base64.
5139 16. The debug output line for the "set" modifier in ACLs was not showing the
5140 name of the variable that was being set.
5142 17. Code tidy: the variable type "vtype_string" was never used. Removed it.
5144 18. Previously, a reference to $sender_host_name did not cause a DNS reverse
5145 lookup on its own. Something else was needed to trigger the lookup. For
5146 example, a match in host_lookup or the need for a host name in a host list.
5147 Now, if $sender_host_name is referenced and the host name has not yet been
5148 looked up, a lookup is performed. If the lookup fails, the variable remains
5149 empty, and $host_lookup_failed is set to "1".
5151 19. Added "eqi" as a case-independent comparison operator.
5153 20. The saslauthd authentication condition could segfault if neither service
5154 nor realm was specified.
5156 21. If an overflowing value such as "2048M" was set for message_size_limit, the
5157 error message that was logged was misleading, and incoming SMTP
5158 connections were dropped. The message is now more accurate, and temporary
5159 errors are given to SMTP connections.
5161 22. In some error situations (such as 21 above) Exim rejects all SMTP commands
5162 (except RSET) with a 421 error, until QUIT is received. However, it was
5163 failing to send a response to QUIT.
5165 23. The HELO ACL was being run before the code for helo_try_verify_hosts,
5166 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
5167 ACL is now run after the helo_try_verify_hosts code.
5169 24. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
5170 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
5171 case-independent, so other case variants are also recognized). Apparently
5172 some systems use these upper case variants.
5174 25. If more than two messages were waiting for the same host, and a transport
5175 filter was specified for the transport, Exim sent two messages over the
5176 same TCP/IP connection, and then failed with "socket operation on non-
5177 socket" when it tried to send the third.
5179 26. Added Exim::debug_write and Exim::log_write for embedded Perl use.
5181 27. The extern definition of crypt16() in expand.c was not being excluded when
5182 the OS had its own crypt16() function.
5184 28. Added bounce_return_body as a new option, and bounce_return_size_limit
5185 as a preferred synonym for return_size_limit, both as an option and as an
5188 29. Added LIBS=-liconv to OS/Makefile-OSF1.
5190 30. Changed the default configuration ACL to relax the local part checking rule
5191 for addresses that are not in any local domains. For these addresses,
5192 slashes and pipe symbols are allowed within local parts, but the sequence
5193 /../ is explicitly forbidden.
5195 31. SPA server authentication was not clearing the challenge buffer before
5198 32. log_message in a "warn" ACL statement was writing to the reject log as
5199 well as to the main log, which contradicts the documentation and doesn't
5200 seem right (because no rejection is happening). So I have stopped it.
5202 33. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
5203 However, I am unable to do any testing of this.
5205 34. Fixed an infelicity in the appendfile transport. When checking directories
5206 for a mailbox, to see if any needed to be created, it was accidentally
5207 using path names with one or more superfluous leading slashes; tracing
5208 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
5210 35. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
5211 contents are added to the log line that is written for every discarded
5212 recipient. (Previously a log_message setting was ignored.)
5214 36. The ${quote: operator now quotes the string if it is empty.
5216 37. The install script runs exim in order to find its version number. If for
5217 some reason other than non-existence or emptiness, which it checks, it
5218 could not run './exim', it was installing it with an empty version number,
5219 i.e. as "exim-". This error state is now caught, and the installation is
5222 38. An argument was missing from the function that creates an error message
5223 when Exim fails to connect to the socket for saslauthd authentication.
5224 This could cause Exim to crash, or give a corrupted message.
5226 39. Added isip, isip4, and isip6 to ${if conditions.
5228 40. The ACL variables $acl_xx are now saved with the message, and can be
5229 accessed later in routers, transports, and filters.
5231 41. The new lookup type nwildlsearch is like wildlsearch, except that the key
5232 strings in the file are not string-expanded.
5234 42. If a MAIL command specified a SIZE value that was too large to fit into an
5235 int variable, the check against message_size_limit failed. Such values are
5236 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
5237 day this will have to be increased, but I don't think I want to be around
5238 when emails are that large.
5245 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
5246 iconv() is not standard in FreeBSD.
5248 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with
5249 IPv6 enabled. The observed symptom was a segmentation fault on return from
5250 the function os_common_find_running_interfaces() in src/os.c.
5252 3. In the check_special_case() function in daemon.c I had used "errno" as an
5253 argument name, which causes warnings on some systems. This was basically a
5254 typo, since it was named "eno" in the comments!
5256 4. The code that waits for the clock to tick (at a resolution of some fraction
5257 of a second) so as to ensure message-id uniqueness was always waiting for
5258 at least one whole tick, when it could have waited for less. [This is
5259 almost certainly not relevant at current processor speeds, where it is
5260 unlikely to ever wait at all. But we try to future-proof.]
5262 5. The function that sleeps for a time interval that includes fractions of a
5263 second contained a race. It did not block SIGALRM between setting the
5264 timer, and suspending (a couple of lines later). If the interval was short
5265 and the sigsuspend() was delayed until after it had expired, the suspension
5266 never ended. On busy systems this could lead to processes getting stuck for
5269 6. Some uncommon configurations may cause a lookup to happen in a queue runner
5270 process, before it forks any delivery processes. The open lookup caching
5271 mechanism meant that the open file or database connection was passed into
5272 the delivery process. The problem was that delivery processes always tidy
5273 up cached lookup data. This could cause a problem for the next delivery
5274 process started by the queue runner, because the external queue runner
5275 process does not know about the closure. So the next delivery process
5276 still has data in the lookup cache. In the case of a file lookup, there was
5277 no problem because closing a file descriptor in a subprocess doesn't affect
5278 the parent. However, if the lookup was caching a connection to a database,
5279 the connection was closed, and the second delivery process was likely to
5280 see errors such as "PGSQL: query failed: server closed the connection
5281 unexpectedly". The problem has been fixed by closing all cached lookups
5282 in a queue runner before running a delivery process.
5284 7. Compiler warning on Linux for the second argument of iconv(), which doesn't
5285 seem to have the "const" qualifier which it has on other OS. I've
5288 8. Change 4.21/2 was too strict. It is only if there are two authenticators
5289 *of the same type* (client or server) with the same public name that an
5290 error should be diagnosed.
5292 9. When Exim looked up a host name for an IP address, but failed to find the
5293 original IP address when looking up the host name (a safety check), it
5294 output the message "<ip address> does not match any IP for NULL", which was
5295 confusing, to say the least. The bug was that the host name should have
5296 appeared instead of "NULL".
5298 10. Since release 3.03, if Exim is called by a uid other than root or the Exim
5299 user that is built into the binary, and the -C or -D options is used, root
5300 privilege is dropped before the configuration file is read. In addition,
5301 logging is switched to stderr instead of the normal log files. If the
5302 configuration then re-defines the Exim user, the unprivileged environment
5303 is probably not what is expected, so Exim logs a panic warning message (but
5306 However, if deliver_drop_privilege is set, the unprivileged state may well
5307 be exactly what is intended, so the warning has been cut out in that case,
5308 and Exim is allowed to try to write to its normal log files.
5314 1. smtp_return_error_details was not giving details for temporary sender
5315 or receiver verification errors.
5317 2. Diagnose a configuration error if two authenticators have the same public
5320 3. Exim used not to create the message log file for a message until the first
5321 delivery attempt. This could be confusing when incoming messages were held
5322 for policy or load reasons. The message log file is now created at the time
5323 the message is received, and an initial "Received" line is written to it.
5325 4. The automatically generated man page for command line options had a minor
5326 bug that caused no ill effects; however, a more serious problem was that
5327 the procedure for building the man page automatically didn't always
5328 operate. Consequently, release 4.20 contains an out-of-date version. This
5329 shouldn't happen again.
5331 5. When building Exim with embedded Perl support, the script that builds the
5332 Makefile was calling 'perl' to find its compile-time parameters, ignoring
5333 any setting of PERL_COMMAND in Local/Makefile. This is now fixed.
5335 6. The freeze_tell option was not being used for messages that were frozen on
5336 arrival, either by an ACL or by local_scan().
5338 7. Added the smtp_incomplete_transaction log selector.
5340 8. After STARTTLS, Exim was not forgetting that it had advertised AUTH, so it
5341 was accepting AUTH without a new EHLO.
5343 9. Added tls_remember_esmtp to cope with YAEB. This allows AUTH and other
5344 ESMTP extensions after STARTTLS without a new EHLO, in contravention of the
5347 10. Logging of TCP/IP connections (when configured) now happens in the main
5348 daemon process instead of the child process, so that the TCP/IP connection
5349 count is more accurate (but it can never be perfect).
5351 11. The use of "drop" in a nested ACL was not being handled correctly in the
5352 outer ACL. Now, if condition failure induced by the nested "drop" causes
5353 the outer ACL verb to deny access ("accept" or "discard" after "endpass",
5354 or "require"), the connection is dropped.
5356 12. Similarly, "discard" in a nested ACL wasn't being handled. A nested ACL
5357 that yield "discard" can now be used with an "accept" or a "discard" verb,
5358 but an error is generated for any others (because I can't see a useful way
5359 to define what should happen).
5361 13. When an ACL is read dynamically from a file (or anywhere else), the lines
5362 are now processed in the same way as lines in the Exim configuration file.
5363 In particular, continuation lines are supported.
5365 14. Added the "dnslists = a.b.c!=n.n.n.n" feature.
5367 15. Added -ti meaning -t -i.
5369 16. Check for letters, digits, hyphens, and dots in the names of dnslist
5370 domains, and warn by logging if others are found.
5372 17. At least on BSD, alignment is not guarenteed for the array of ifreq's
5373 returned from GIFCONF when Exim is trying to find the list of interfaces on
5374 a host. The code in os.c has been modified to copy each ifreq to an aligned
5375 structure in all cases.
5377 Also, in some cases, the returned ifreq's were being copied to a 'struct
5378 ifreq' on the stack, which was subsequently passed to host_ntoa(). That
5379 means the last couple of bytes of an IPv6 address could be chopped if the
5380 ifreq contained only a normal sockaddr (14 bytes storage).
5382 18. Named domain lists were not supported in the hosts_treat_as_local option.
5383 An entry such as +xxxx was not recognized, and was treated as a literal
5386 19. Ensure that header lines added by a DATA ACL are included in the reject log
5387 if the ACL subsequently rejects the message.
5389 20. Upgrade the cramtest.pl utility script to use Digest::MD5 instead of just
5390 MD5 (which is deprecated).
5392 21. When testing a filter file using -bf, Exim was writing a message when it
5393 took the sender from a "From " line in the message, but it was not doing so
5394 when it took $return_path from a Return-Path: header line. It now does.
5396 22. If the contents of a "message" modifier for a "warn" ACL verb do not begin
5397 with a valid header line field name (a series of printing characters
5398 terminated by a colon, Exim now inserts X-ACL-Warn: at the beginning.
5400 23. Changed "disc" in the source to "disk" to conform to the documentation and
5401 the book and for uniformity.
5403 24. Ignore Sendmail's -Ooption=value command line item.
5405 25. When execve() failed while trying to run a command in a pipe transport,
5406 Exim was returning EX_UNAVAILBLE (69) from the subprocess. However, this
5407 could be confused with a return value of 69 from the command itself. This
5408 has been changed to 127, the value the shell returns if it is asked to run
5409 a non-existent command. The wording for the related log line suggests a
5410 non-existent command as the problem.
5412 26. If received_header_text expands to an empty string, do not add a Received:
5413 header line to the message. (Well, it adds a token one on the spool, but
5414 marks it "old" so that it doesn't get used or transmitted.)
5416 27. Installed eximstats 1.28 (addition of -nt option).
5418 28. There was no check for failure on the call to getsockname() in the daemon
5419 code. This can fail if there is a shortage of resources on the system, with
5420 ENOMEM, for example. A temporary error is now given on failure.
5422 29. Contrary to the C standard, it seems that in some environments, the
5423 equivalent of setlocale(LC_ALL, "C") is not obeyed at the start of a C
5424 program. Exim now does this explicitly; it affects the formatting of
5425 timestamps using strftime().
5427 30. If exiqsumm was given junk data, it threw up some uninitialized variable
5428 complaints. I've now initialized all the variables, to avoid this.
5430 32. Header lines added by a system filter were not being "seen" during
5431 transport-time rewrites.
5433 33. The info_callback() function passed to OpenSSL is set up with type void
5434 (*)(SSL *, int, int), as described somewhere. However, when calling the
5435 function (actually a macro) that sets it up, the type void(*)() is
5436 expected. I've put in a cast to prevent warnings from picky compilers.
5438 34. If a DNS black list lookup found a CNAME record, but there were no A
5439 records associated with the domain it pointed at, Exim crashed.
5441 35. If a DNS black list lookup returned more than one A record, Exim ignored
5442 all but the first. It now scans all returned addresses if a particular IP
5443 value is being sought. In this situation, the contents of the
5444 $dnslist_value variable are a list of all the addresses, separated by a
5447 36. Tightened up the rules for host name lookups using reverse DNS. Exim used
5448 to accept a host name and all its aliases if the forward lookup for any of
5449 them yielded the IP address of the incoming connection. Now it accepts only
5450 those names whose forward lookup yields the correct IP address. Any other
5451 names are discarded. This closes a loophole whereby a rogue DNS
5452 administrator could create reverse DNS records to break through a
5453 wildcarded host restriction in an ACL.
5455 37. If a user filter or a system filter that ran in a subprocess used any of
5456 the numerical variables ($1, $2 etc), or $thisaddress, in a pipe command,
5457 the wrong values were passed to the pipe command ($thisaddress had the
5458 value of $0, $0 had the value of $1, etc). This bug was introduced by
5459 change 4.11/101, and not discovered because I wrote an inadequate test. :-(
5461 38. Improved the line breaking for long SMTP error messages from ACLs.
5462 Previously, if there was no break point between 40 and 75 characters, Exim
5463 left the rest of the message alone. Two changes have been made: (a) I've
5464 reduced the minimum length to 35 characters; (b) if it can't find a break
5465 point between 35 and 75 characters, it looks ahead and uses the first one
5466 that it finds. This may give the occasional overlong line, but at least the
5467 remaining text gets split now.
5469 39. Change 82 of 4.11 was unimaginative. It assumed the limit on the number of
5470 file descriptors might be low, and that setting 1000 would always raise it.
5471 It turns out that in some environments, the limit is already over 1000 and
5472 that lowering it causes trouble. So now Exim takes care not to decrease it.
5474 40. When delivering a message, the value of $return_path is set to $sender_
5475 address at the start of routing (routers may change the value). By an
5476 oversight, this default was not being set up when an address was tested by
5477 -bt or -bv, which affected the outcome if any router or filter referred to
5480 41. The idea of the "warn" ACL verb is that it adds a header or writes to the
5481 log only when "message" or "log_message" are set. However, if one of the
5482 conditions was an address verification, or a call to a nested ACL, the
5483 messages generated by the underlying test were being passed through. This
5484 no longer happens. The underlying message is available in $acl_verify_
5485 message for both "message" and "log_message" expansions, so it can be
5486 passed through if needed.
5488 42. Added RFC 2047 interpretation of header lines for $h_ expansions, with a
5489 new expansion $bh_ to give the encoded byte string without charset
5490 translation. Translation happens only if iconv() is available; HAVE_ICONV
5491 indicates this at build time. HEADERS_CHARSET gives the charset to
5492 translate to; headers_charset can change it in the configuration, and
5493 "headers charset" can change it in an individual filter file.
5495 43. Now that we have a default RFC 2047 charset (see above), the code in Exim
5496 that creates RFC 2047 encoded "words" labels them as that charset instead
5497 of always using iso-8859-1. The cases are (i) the explicit ${rfc2047:
5498 expansion operator; (ii) when Exim creates a From: line for a local
5499 message; (iii) when a header line is rewritten to include a "phrase" part.
5501 44. Nasty bug in exiqsumm: the regex to skip already-delivered addresses was
5502 buggy, causing it to skip the first lines of messages whose message ID
5503 ended in 'D'. This would not have bitten before Exim release 4.14, because
5504 message IDs were unlikely to end in 'D' before then. The effect was to have
5505 incorrect size information for certain domains.
5507 45. #include "config.h" was missing at the start of the crypt16.c module. This
5508 caused trouble on Tru64 (aka OSF1) systems, because HAVE_CRYPT16 was not
5511 46. If there was a timeout during a "random" callout check, Exim treated it as
5512 a failure of the random address, and carried on sending RSET and the real
5513 address. If the delay was just some slowness somewhere, the response to the
5514 original RCPT would be taken as a response to RSET and so on, causing
5515 mayhem of various kinds.
5517 47. Change 50 for 4.20 was a heap of junk. I don't know what I was thinking
5518 when I implemented it. It didn't allow for the fact that some option values
5519 may legitimatetly be negative (e.g. size_addition), and it didn't even do
5520 the right test for positive values.
5522 48. Domain names in DNS records are case-independent. Exim always looks them up
5523 in lower case. Some resolvers return domain names in exactly the case they
5524 appear in the zone file, that is, they may contain uppercase letters. Not
5525 all resolvers do this - some return always lower case. Exim was treating a
5526 change of case by a resolver as a change of domain, similar to a widening
5527 of a domain abbreviation. This triggered its re-routing code and so it was
5528 trying to route what was effectively the same domain again. This normally
5529 caused routing to fail (because the router wouldn't handle the domain
5530 twice). Now Exim checks for this case specially, and just changes the
5531 casing of the domain that it ultimately uses when it transmits the message
5534 49. Added Sieve (RFC 3028) support, courtesy of Michael Haardt's contributed
5537 50. If a filter generated a file delivery with a non-absolute name (possible if
5538 no home directory exists for the router), the forbid_file option was not
5541 51. Added '&' feature to dnslists, to provide bit mask matching in addition to
5542 the existing equality matching.
5544 52. Exim was using ints instead of ino_t variables in some places where it was
5545 dealing with inode numbers.
5547 53. If TMPDIR is defined in Local/Makefile (default in src/EDITME is
5548 TMPDIR="/tmp"), Exim checks for the presence of an environment variable
5549 called TMPDIR, and if it finds it is different, it changes its value.
5551 54. The smtp_printf() function is now made available to local_scan() so
5552 additional output lines can be written before returning. There is also an
5553 smtp_fflush() function to enable the detection of a dropped connection.
5554 The variables smtp_input and smtp_batched_input are exported to
5557 55. Changed the default runtime configuration: the message "Unknown user"
5558 has been removed from the ACL, and instead placed on the localuser router,
5559 using the cannot_route_message feature. This means that any verification
5560 failures that generate their own messages won't get overridden. Similarly,
5561 the "Unrouteable address" message that was in the ACL for unverifiable
5562 relay addresses has also been removed.
5564 56. Added hosts_avoid_esmtp to the smtp transport.
5566 57. The exicyclog script was not checking for the esoteric option
5567 CONFIGURE_FILE_USE_EUID in the Local/Makefile. It now does this, but it
5568 will work only if exicyclog is run under the appropriate euid.
5570 58. Following a discussion on the list, the rules by which Exim recognises line
5571 endings on incoming messages have been changed. The -dropcr and drop_cr
5572 options are now no-ops, retained only for backwards compatibility. The
5573 following line terminators are recognized: LF CRLF CR. However, special
5574 processing applies to CR:
5576 (i) The sequence CR . CR does *not* terminate an incoming SMTP message,
5577 nor a local message in the state where . is a terminator.
5579 (ii) If a bare CR is encountered in a header line, an extra space is added
5580 after the line terminator so as not to end the header. The reasoning
5581 behind this is that bare CRs in header lines are most likely either
5582 to be mistakes, or people trying to play silly games.
5584 59. The size of a message, as listed by "-bp" or in the Exim monitor window,
5585 was being incorrectly given as 18 bytes larger than it should have been.
5586 This is a VOB (very old bug).
5588 60. This may never have affected anything current, but just in case it has:
5589 When the local host is found other than at the start of a list of hosts,
5590 the local host, those with the same MX, and any that follow, are discarded.
5591 When the list in question was part of a longer list of hosts, the following
5592 hosts (not currently being processed) were also being discarded. This no
5593 longer happens. I'm not sure if this situation could ever has previously
5596 61. Added the "/MX" feature to lists of hosts in the manualroute and query
5599 62. Whenever Exim generates a new message, it now adds an Auto-Submitted:
5600 header. This is something that is recommended in a new Internet Draft, and
5601 is something that is documented as being done by Sendmail. There are two
5602 possible values. For messages generated by the autoreply transport, Exim
5605 Auto-Submitted: auto-replied
5607 whereas for all other generated messages (e.g. bounces) it adds
5609 Auto-Submitted: auto-generated
5611 63. The "personal" condition in filters now includes a test for the
5612 Auto-Submitted: header. If it contains the string "auto-" the message it
5613 not considered personal.
5615 64. Added rcpt_include_affixes as a generic transport option.
5617 65. Added queue_only_override (default true).
5619 66. Added the syslog_duplication option.
5621 67. If what should have been the first header line of a message consisted of
5622 a space followed by a colon, Exim was mis-interpreting it as a header line.
5623 It isn't of course - it is syntactically invalid and should therefore be
5624 treated as the start of the message body. The misbehaviour could have
5625 caused a number of strange effects, including loss of data in subsequent
5626 header lines, and spool format errors.
5628 68. Formerly, the AUTH parameter on a MAIL command was trusted only if the
5629 client host had authenticated. This control can now be exercised by an ACL
5630 for more flexibility.
5632 69. By default, callouts do not happen when testing with -bh. There is now a
5633 variant, -bhc, which does actually run the callout code, including
5634 consulting and updating the callout cache.
5636 70. Added support for saslauthd authentication, courtesy of Alexander
5639 71. If statvfs() failed on the spool or log directories while checking their
5640 size for availability, Exim confusingly gave the error "space shortage".
5641 Furthermore, in debugging mode it crashed with a floating point exception.
5642 These checks are done if check_{spool,log}_{space,inodes} are set, and when
5643 an SMTP message arrives with SIZE= on the MAIL command. As this is a really
5644 serious problem, Exim now writes to the main and panic logs when this
5645 happens, with details of the failure. It then refuses to accept the
5646 incoming message, giving the message "spool directory problem" or "log
5647 directory problem" with a 421 code for SMTP messages.
5649 72. When Exim is about to re-exec itself, it ensures that the file descriptors
5650 0, 1, and 2 exist, because some OS complain for execs without them (see
5651 ChangeLog 4.05/30). If necessary, Exim opens /dev/null to use for these
5652 descriptors. However, the code omitted to check that the open succeeded,
5653 causing mysterious errors if for some reason the permissions on /dev/null
5654 got screwed. Now Exim writes a message to the main and panic logs, and
5655 bombs out if it can't open /dev/null.
5657 73. Re-vamped the way daemon_smtp_port, local_interfaces, and -oX work and
5658 interact so that it is all more flexible. It is supposed to remain
5659 backwards compatible. Also added extra_local_interfaces.
5661 74. Invalid data sent to a SPA (NTLM) server authenticator could cause the code
5662 to bomb out with an assertion failure - to the client this appears as a
5663 connection drop. This problem occurs in the part of the code that was taken
5664 from the Samba project. Fortunately, the assertion is in a very simple
5665 function, so I have fixed this by reproducing the function inline in the
5666 one place where it is called, and arranging for authentication to fail
5667 instead of killing the process with assert().
5669 75. The SPA client code was not working when the server requested OEM rather
5670 than Unicode encoding.
5672 76. Added code to make require_files with a specific uid setting more usable in
5673 the case where statting the file as root fails - usually a non-root-mounted
5674 NFS file system. When this happens and the failure is EACCES, Exim now
5675 forks a subprocess and does the per-uid checking as the relevant uid.
5677 77. Added process_log_path.
5679 78. If log_file_path was not explicitly set, a setting of check_log_space or
5680 check_log_inodes was ignored.
5682 79. If a space check for the spool or log partitions fails, the incident is now
5683 logged. Of course, in the latter case the data may get lost...
5685 80. Added the %p formatting code to string_format() so that it can be used to
5686 print addresses in debug_print(). Adjusted all the address printing in the
5687 debugging in store.c to use %p rather than %d.
5689 81. There was a concern that a line of code in smtp_in.c could overflow a
5690 buffer if a HELO/EHLO command was given followed by 500 or so spaces. As
5691 initially expressed, the concern was not well-founded, because trailing
5692 spaces are removed early. However, if the trailing spaces were followed by
5693 a NULL, they did not get removed, so the overflow was possible. Two fixes
5696 (a) I re-wrote the offending code in a cleaner fashion.
5697 (b) If an incoming SMTP command contains a NULL character, it is rejected
5700 82. When Exim changes uid/gid to the Exim user at daemon start time, it now
5701 runs initgroups(), so that if the Exim user is in any additional groups,
5702 they will be used during message reception.
5708 The change log for 4.20 and earlier releases has been archived.
projects / exim.git / blob