X-Git-Url: https://git.exim.org/users/heiko/exim.git/blobdiff_plain/01e0dc8f029563fb37f0b7599ea3e514f3a1aa96..4a6a987a85df3ff3706a930aa580b0d5d708c580:/doc/doc-txt/ChangeLog diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog index e59a3f541..9aca72920 100644 --- a/doc/doc-txt/ChangeLog +++ b/doc/doc-txt/ChangeLog @@ -1,8 +1,1601 @@ -$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.279 2005/12/15 18:09:55 jetmore Exp $ - Change log file for Exim from version 4.21 ------------------------------------------- +Exim version 4.78 +----------------- + +PP/01 Handle short writes when writing local log-files. + In practice, only affects FreeBSD (8 onwards). + Bugzilla 1053, with thanks to Dmitry Isaikin. + +NM/01 Bugzilla 949 - Documentation tweak + +NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps + improved. + +NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs. + +PP/02 Implemented gsasl authenticator. + +PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option. + +PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use + `pkg-config foo` for cflags/libs. + +PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent + with rest of GSASL and with heimdal_gssapi. + +PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use + `pkg-config foo` for cflags/libs for the TLS implementation. + +PP/07 New expansion variable $tls_bits; Cyrus SASL server connection + properties get this fed in as external SSF. A number of robustness + and debugging improvements to the cyrus_sasl authenticator. + +PP/08 cyrus_sasl server now expands the server_realm option. + +PP/09 Bugzilla 1214 - Log authentication information in reject log. + Patch by Jeremy Harris. + +PP/10 Added dbmjz lookup type. + + +Exim version 4.77 +----------------- + +PP/01 Solaris build fix for Oracle's LDAP libraries. + Bugzilla 1109, patch from Stephen Usher. + +TF/01 HP/UX build fix: avoid arithmetic on a void pointer. + +TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o + whitespace trailer + +TF/02 Fix a couple more cases where we did not log the error message + when unlink() failed. See also change 4.74-TF/03. + +TF/03 Make the exiwhat support code safe for signals. Previously Exim might + lock up or crash if it happened to be inside a call to libc when it + got a SIGUSR1 from exiwhat. + + The SIGUSR1 handler appends the current process status to the process + log which is later printed by exiwhat. It used to use the general + purpose logging code to do this, but several functions it calls are + not safe for signals. + + The new output code in the SIGUSR1 handler is specific to the process + log, and simple enough that it's easy to inspect for signal safety. + Removing some special cases also simplifies the general logging code. + Removing the spurious timestamps from the process log simplifies + exiwhat. + +TF/04 Improved ratelimit ACL condition. + + The /noupdate option has been deprecated in favour of /readonly which + has clearer semantics. The /leaky, /strict, and /readonly update modes + are mutually exclusive. The update mode is no longer included in the + database key; it just determines when the database is updated. (This + means that when you upgrde Exim will forget old rate measurements.) + + Exim now checks that the per_* options are used with an update mode that + makes sense for the current ACL. For example, when Exim is processing a + message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify + per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you + must specify per_mail/readonly. If you omit the update mode it defaults to + /leaky where that makes sense (as before) or /readonly where required. + + The /noupdate option is now undocumented but still supported for + backwards compatibility. It is equivalent to /readonly except that in + ACLs where /readonly is required you may specify /leaky/noupdate or + /strict/noupdate which are treated the same as /readonly. + + A useful new feature is the /count= option. This is a generalization + of the per_byte option, so that you can measure the throughput of other + aggregate values. For example, the per_byte option is now equivalent + to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }. + + The per_rcpt option has been generalized using the /count= mechanism + (though it's more complicated than the per_byte equivalence). When it is + used in acl_smtp_rcpt, the per_rcpt option adds recipients to the + measured rate one at a time; if it is used later (e.g. in acl_smtp_data) + or in a non-SMTP ACL it adds all the recipients in one go. (The latter + /count=$recipients_count behaviour used to work only in non-SMTP ACLs.) + Note that using per_rcpt with a non-readonly update mode in more than + one ACL will cause the recipients to be double-counted. (The per_mail + and per_byte options don't have this problem.) + + The handling of very low rates has changed slightly. If the computed rate + is less than the event's count (usually one) then this event is the first + after a long gap. In this case the rate is set to the same as this event's + count, so that the first message of a spam run is counted properly. + + The major new feature is a mechanism for counting the rate of unique + events. The new per_addr option counts the number of different + recipients that someone has sent messages to in the last time period. It + behaves like per_rcpt if all the recipient addresses are different, but + duplicate recipient addresses do not increase the measured rate. Like + the /count= option this is a general mechanism, so the per_addr option + is equivalent to per_rcpt/unique=$local_part@$domain. You can, for + example, measure the rate that a client uses different sender addresses + with the options per_mail/unique=$sender_address. There are further + details in the main documentation. + +TF/05 Removed obsolete $Cambridge$ CVS revision strings. + +TF/06 Removed a few PCRE remnants. + +TF/07 Automatically extract Exim's version number from tags in the git + repository when doing development or release builds. + +PP/02 Raise smtp_cmd_buffer_size to 16kB. + Bugzilla 879. Patch from Paul Fisher. + +PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport. + Heavily based on revision 40f9a89a from Simon Arlott's tree. + Bugzilla 97. + +PP/04 Use .dylib instead of .so for dynamic library loading on MacOS. + +PP/05 Variable $av_failed, true if the AV scanner deferred. + Bugzilla 1078. Patch from John Horne. + +PP/06 Stop make process more reliably on build failure. + Bugzilla 1087. Patch from Heiko Schlittermann. + +PP/07 Make maildir_use_size_file an _expandable_ boolean. + Bugzilla 1089. Patch from Heiko Schlittermann. + +PP/08 Handle ${run} returning more data than OS pipe buffer size. + Bugzilla 1131. Patch from Holger Weiß. + +PP/09 Handle IPv6 addresses with SPF. + Bugzilla 860. Patch from Wolfgang Breyha. + +PP/10 GnuTLS: support TLS 1.2 & 1.1. + Bugzilla 1156. + Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler]. + Bugzilla 1095. + +PP/11 match_* no longer expand right-hand-side by default. + New compile-time build option, EXPAND_LISTMATCH_RHS. + New expansion conditions, "inlist", "inlisti". + +PP/12 fix uninitialised greeting string from PP/03 (smtps client support). + +PP/13 shell and compiler warnings fixes for RC1-RC4 changes. + +PP/14 fix log_write() format string regression from TF/03. + Bugzilla 1152. Patch from Dmitry Isaikin. + + +Exim version 4.76 +----------------- + +PP/01 The new ldap_require_cert option would segfault if used. Fixed. + +PP/02 Harmonised TLS library version reporting; only show if debugging. + Layout now matches that introduced for other libraries in 4.74 PP/03. + +PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1 + +PP/04 New "dns_use_edns0" global option. + +PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid. + Bugzilla 1098. + +PP/06 Extra paranoia around buffer usage at the STARTTLS transition. + nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316 + +TK/01 Updated PolarSSL code to 0.14.2. + Bugzilla 1097. Patch from Andreas Metzler. + +PP/07 Catch divide-by-zero in ${eval:...}. + Fixes bugzilla 1102. + +PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed. + Bugzilla 1104. + +TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a + format-string attack -- SECURITY: remote arbitrary code execution. + +TK/03 SECURITY - DKIM signature header parsing was double-expanded, second + time unintentionally subject to list matching rules, letting the header + cause arbitrary Exim lookups (of items which can occur in lists, *not* + arbitrary string expansion). This allowed for information disclosure. + +PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to + INT_MIN/-1 -- value coerced to INT_MAX. + + +Exim version 4.75 +----------------- + +NM/01 Workround for PCRE version dependency in version reporting + Bugzilla 1073 + +TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0. + This fixes portability to compilers other than gcc, notably + Solaris CC and HP-UX CC. Fixes Bugzilla 1050. + +TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup + makefiles for portability to HP-UX and POSIX correctness. + +PP/01 Permit LOOKUP_foo enabling on the make command-line. + Also via indented variable definition in the Makefile. + (Debugging by Oliver Heesakkers). + +PP/02 Restore caching of spamd results with expanded spamd_address. + Patch from author of expandable spamd_address patch, Wolfgang Breyha. + +PP/03 Build issue: lookups-Makefile now exports LC_ALL=C + Improves build reliability. Fix from: Frank Elsner + +NM/02 Fix wide character breakage in the rfc2047 coding + Fixes bug 1064. Patch from Andrey N. Oktyabrski + +NM/03 Allow underscore in dnslist lookups + Fixes bug 1026. Patch from Graeme Fowler + +PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps). + Code patches from Adam Ciarcinski of NetBSD. + +NM/04 Fixed exiqgrep to cope with mailq missing size issue + Fixes bug 943. + +PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which + is logged, to avoid truncation. Patch from John Horne. + +PP/06 Bugzilla 1042: implement freeze_signal on pipe transports. + Patch from Jakob Hirsch. + +PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal + SQL string expansion failure details. + Patch from Andrey Oktyabrski. + +PP/08 Bugzilla 486: implement %M datestamping in log filenames. + Patch from Simon Arlott. + +PP/09 New lookups functionality failed to compile on old gcc which rejects + extern declarations in function scope. + Patch from Oliver Fleischmann + +PP/10 Use sig_atomic_t for flags set from signal handlers. + Check getgroups() return and improve debugging. + Fixed developed for diagnosis in bug 927 (which turned out to be + a kernel bug). + +PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag. + Patch from Mark Zealey. + +PP/12 Bugzilla 1056: Improved spamd server selection. + Patch from Mark Zealey. + +PP/13 Bugzilla 1086: Deal with maildir quota file races. + Based on patch from Heiko Schlittermann. + +PP/14 Bugzilla 1019: DKIM multiple signature generation fix. + Patch from Uwe Doering, sign-off by Michael Haardt. + +NM/05 Fix to spam.c to accommodate older gcc versions which dislike + variable declaration deep within a block. Bug and patch from + Dennis Davis. + +PP/15 lookups-Makefile IRIX compatibilty coercion. + +PP/16 Make DISABLE_DKIM build knob functional. + +NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler + Patch by Simon Arlott + +TF/03 Fix valgrind.h portability to C89 compilers that do not support + variable argument macros. Our copy now differs from upstream. + + +Exim version 4.74 +----------------- + +TF/01 Failure to get a lock on a hints database can have serious + consequences so log it to the panic log. + +TF/02 Log LMTP confirmation messages in the same way as SMTP, + controlled using the smtp_confirmation log selector. + +TF/03 Include the error message when we fail to unlink a spool file. + +DW/01 Bugzilla 139: Support dynamically loaded lookups as modules. + With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux + for maintaining out-of-tree patches for some time. + +PP/01 Bugzilla 139: Documentation and portability issues. + Avoid GNU Makefile-isms, let Exim continue to build on BSD. + Handle per-OS dynamic-module compilation flags. + +PP/02 Let /dev/null have normal permissions. + The 4.73 fixes were a little too stringent and complained about the + permissions on /dev/null. Exempt it from some checks. + Reported by Andreas M. Kirchwitz. + +PP/03 Report version information for many libraries, including + Exim version information for dynamically loaded libraries. Created + version.h, now support a version extension string for distributors + who patch heavily. Dynamic module ABI change. + +PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a + privilege escalation vulnerability whereby the Exim run-time user + can cause root to append content of the attacker's choosing to + arbitrary files. + +PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code. + (Wolfgang Breyha) + +PP/06 Bugzilla 1071: fix delivery logging with untrusted macros. + If dropping privileges for untrusted macros, we disabled normal logging + on the basis that it would fail; for the Exim run-time user, this is not + the case, and it resulted in successful deliveries going unlogged. + Fixed. Reported by Andreas Metzler. + + +Exim version 4.73 +----------------- + +PP/01 Date: & Message-Id: revert to normally being appended to a message, + only prepend for the Resent-* case. Fixes regression introduced in + Exim 4.70 by NM/22 for Bugzilla 607. + +PP/02 Include check_rfc2047_length in configure.default because we're seeing + increasing numbers of administrators be bitten by this. + +JJ/01 Added DISABLE_DKIM and comment to src/EDITME + +PP/03 Bugzilla 994: added openssl_options main configuration option. + +PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads. + +PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports. + +PP/06 Adjust NTLM authentication to handle SASL Initial Response. + +PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but + without a peer certificate, leading to a segfault because of an + assumption that peers always have certificates. Be a little more + paranoid. Problem reported by Martin Tscholak. + +PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content + filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes + NB: ClamAV planning to remove STREAM in "middle of 2010". + CL also introduces -bmalware, various -d+acl logging additions and + more caution in buffer sizes. + +PP/09 Implemented reverse_ip expansion operator. + +PP/10 Bugzilla 937: provide a "debug" ACL control. + +PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne. + +PP/12 Bugzilla 973: Implement --version. + +PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0. + +PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler. + +PP/15 Bugzilla 816: support multiple condition rules on Routers. + +PP/16 Add bool_lax{} expansion operator and use that for combining multiple + condition rules, instead of bool{}. Make both bool{} and bool_lax{} + ignore trailing whitespace. + +JJ/02 prevent non-panic DKIM error from being sent to paniclog + +JJ/03 added tcp_wrappers_daemon_name to allow host entries other than + "exim" to be used + +PP/17 Fix malware regression for cmdline scanner introduced in PP/08. + Notification from Dr Andrew Aitchison. + +PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's + ExtendedDetectionInfo response format. + Notification from John Horne. + +PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards + compatible. + +PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http: + XSL and documented dependency on system catalogs, with examples of how + it normally works. + +DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store + access. + +DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour + of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a + configuration file which is writeable by the Exim user or group. + +DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability + of configuration files to cover files specified with the -C option if + they are going to be used with root privileges, not just the default + configuration file. + +DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY + option (effectively making it always true). + +DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration + files to be used while preserving root privileges. + +DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure + that rogue child processes cannot use them. + +PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim + run-time user, instead of root. + +PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the + Exim run-time user without dropping privileges. + +DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the + result string, instead of calling string_vformat() twice with the same + arguments. + +DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not + for other users. Others should always drop root privileges if they use + -C on the command line, even for a whitelisted configure file. + +DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes. + +NM/01 Fixed bug #1002 - Message loss when using multiple deliveries + + +Exim version 4.72 +----------------- + +JJ/01 installed exipick 20100104.1, adding $max_received_linelength, + $data_path, and $header_path variables; fixed documentation bugs and + typos + +JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow + exipick to access non-standard spools, including the "frozen" queue + (Finput) + +NM/01 Bugzilla 965: Support mysql stored procedures. + Patch from Alain Williams + +NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD + +NM/03 Bugzilla 955: Documentation fix for max_rcpts. + Patch from Andreas Metzler + +NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator. + Patch from Kirill Miazine + +NM/05 Bugzilla 671: Added umask to procmail example. + +JJ/03 installed exipick 20100323.0, fixing doc bug + +NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail + directory. Notification and patch from Dan Rosenberg. + +TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1. + +TK/02 Improve log output when DKIM signing operation fails. + +MH/01 Treat the transport option dkim_domain as a colon separated + list, not as a single string, and sign the message with each element, + omitting multiple occurences of the same signer. + +NM/07 Null terminate DKIM strings, Null initialise DKIM variable + Bugzilla 985, 986. Patch by Simon Arlott + +NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related) + Patch by Simon Arlott + +PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on + MBX locking. Notification from Dan Rosenberg. + + +Exim version 4.71 +----------------- + +TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body. + +NM/01 Bugzilla 913: Documentation fix for gnutls_* options. + +NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults. + +NM/03 Bugzilla 847: Enable DNSDB lookup by default. + +NM/04 Bugzilla 915: Flag broken perl installation during build. + + +Exim version 4.70 +----------------- + +TK/01 Added patch by Johannes Berg that expands the main option + "spamd_address" if it starts with a dollar sign. + +TK/02 Write list of recipients to X-Envelope-Sender header when building + the mbox-format spool file for content scanning (suggested by Jakob + Hirsch). + +TK/03 Added patch by Wolfgang Breyha that adds experimental DCC + (http://www.dcc-servers.net/) support via dccifd. Activated by + setting EXPERIMENTAL_DCC=yes in Local/Makefile. + +TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted + by Mark Daniel Reidel . + +NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree. + When building exim an external PCRE library is now needed - + PCRE is a system library on the majority of modern systems. + See entry on PCRE_LIBS in EDITME file. + +NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator + conversation. Added nologin parameter to request. + Patch contributed by Kirill Miazine. + +TF/01 Do not log submission mode rewrites if they do not change the address. + +TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c. + +NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty + log files in place. Contributed by Roberto Lima. + +NM/04 Bugzilla 667: Close socket used by dovecot authenticator. + +TF/03 Bugzilla 615: When checking the local_parts router precondition + after a local_part_suffix or local_part_prefix option, Exim now + does not use the address's named list lookup cache, since this + contains cached lookups for the whole local part. + +NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by + Robert Millan. Documentation is in experimental-spec.txt. + +TF/04 Bugzilla 668: Fix parallel build (make -j). + +NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000. + +NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling. + Patch provided by Jan Srzednicki. + +TF/05 Leading white space used to be stripped from $spam_report which + wrecked the formatting. Now it is preserved. + +TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so + that they are available at delivery time. + +TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional. + +TF/08 TLS error reporting now respects the incoming_interface and + incoming_port log selectors. + +TF/09 Produce a more useful error message if an SMTP transport's hosts + setting expands to an empty string. + +NM/06 Bugzilla 744: EXPN did not work under TLS. + Patch provided by Phil Pennock. + +NM/07 Bugzilla 769: Extraneous comma in usage fprintf + Patch provided by Richard Godbee. + +NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be + acl_smtp_notquit, added index entry. + +NM/09 Bugzilla 787: Potential buffer overflow in string_format. + Patch provided by Eugene Bujak. + +NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to + accept(). Patch provided by Maxim Dounin. + +NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero. + Patch provided by Phil Pennock. + +NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists. + +NM/13 Bugzilla 590: Correct handling of Resent-Date headers. + Patch provided by Brad "anomie" Jorsch. + +NM/14 Bugzilla 622: Added timeout setting to transport filter. + Patch provided by Dean Brooks. + +TK/05 Add native DKIM support (does not depend on external libraries). + +NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful. + Patch provided by Graeme Fowler. + +NM/16 Bugzilla 851: Documentation example syntax fix. + +NM/17 Changed NOTICE file to remove references to embedded PCRE. + +NM/18 Bugzilla 894: Fix issue with very long lines including comments in + lsearch. + +NM/19 Bugzilla 745: TLS version reporting. + Patch provided by Phil Pennock. + +NM/20 Bugzilla 167: bool: condition support. + Patch provided by Phil Pennock. + +NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken + clients. Patch provided by Phil Pennock. + +NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date. + Patch provided by Brad "anomie" Jorsch. + +NM/23 Bugzilla 687: Fix misparses in eximstats. + Patch provided by Heiko Schlittermann. + +NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid. + Patch provided by Heiko Schlittermann. + +NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file. + plus update to original patch. + +NM/26 Bugzilla 799: Documentation correction for ratelimit. + +NM/27 Bugzilla 802: Improvements to local interface IP addr detection. + Patch provided by David Brownlee. + +NM/28 Bugzilla 807: Improvements to LMTP delivery logging. + +NM/29 Bugzilla 862, 866, 875: Documentation bugfixes. + +NM/30 Bugzilla 888: TLS documentation bugfixes. + +NM/31 Bugzilla 896: Dovecot buffer overrun fix. + +NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --" + Unlike the original bugzilla I have changed all shell scripts in src tree. + +NM/33 Bugzilla 898: Transport filter timeout fix. + Patch by Todd Rinaldo. + +NM/34 Bugzilla 901: Fix sign/unsigned and UTF mistmatches. + Patch by Serge Demonchaux. + +NM/35 Bugzilla 39: Base64 decode bug fixes. + Patch by Jakob Hirsch. + +NM/36 Bugzilla 909: Correct connect() call in dcc code. + +NM/37 Bugzilla 910: Correct issue with relaxed/simple handling. + +NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed. + +NM/39 Bugzilla 911: Fixed MakeLinks build script. + + +Exim version 4.69 +----------------- + +TK/01 Add preliminary DKIM support. Currently requires a forked version of + ALT-N's libdkim that I have put here: + http://duncanthrax.net/exim-experimental/ + + Note to Michael Haardt: I had to rename some vars in sieve.c. They + were called 'true' and it seems that C99 defines that as a reserved + keyword to be used with 'bool' variable types. That means you could + not include C99-style headers which use bools without triggering + build errors in sieve.c. + +NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked + as mailq or other aliases. Changed the --help handling significantly + to do whats expected. exim_usage() emits usage/help information. + +SC/01 Added the -bylocaldomain option to eximstats. + +NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr. + +NM/03 Bugzilla 613: Documentation fix for acl_not_smtp. + +NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall). + + +Exim version 4.68 +----------------- + +PH/01 Another patch from the Sieve maintainer. + +PH/02 When an IPv6 address is converted to a string for single-key lookup + in an address list (e.g. for an item such as "net24-dbm;/net/works"), + dots are used instead of colons so that keys in lsearch files need not + contain colons. This was done some time before quoting was made available + in lsearch files. However, iplsearch files do require colons in IPv6 keys + (notated using the quote facility) so as to distinguish them from IPv4 + keys. This meant that lookups for IP addresses in host lists did not work + for iplsearch lookups. + + This has been fixed by arranging for IPv6 addresses to be expressed with + colons if the lookup type is iplsearch. This is not incompatible, because + previously such lookups could never work. + + The situation is now rather anomolous, since one *can* have colons in + ordinary lsearch keys. However, making the change in all cases is + incompatible and would probably break a number of configurations. + +TK/01 Change PRVS address formatting scheme to reflect latests BATV draft + version. + +MH/01 The "spam" ACL condition code contained a sscanf() call with a %s + conversion specification without a maximum field width, thereby enabling + a rogue spamd server to cause a buffer overflow. While nobody in their + right mind would setup Exim to query an untrusted spamd server, an + attacker that gains access to a server running spamd could potentially + exploit this vulnerability to run arbitrary code as the Exim user. + +TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use + $primary_hostname instead of what libspf2 thinks the hosts name is. + +MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for + a directory entry by the name of the lookup key. Previously, if a + symlink pointed to a non-existing file or a file in a directory that + Exim lacked permissions to read, a lookup for a key matching that + symlink would fail. Now it is enough that a matching directory entry + exists, symlink or not. (Bugzilla 503.) + +PH/03 The body_linecount and body_zerocount variables are now exported in the + local_scan API. + +PH/04 Added the $dnslist_matched variable. + +PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client. + This means they are set thereafter only if the connection becomes + encrypted. + +PH/06 Added the client_condition to authenticators so that some can be skipped + by clients under certain conditions. + +PH/07 The error message for a badly-placed control=no_multiline_responses left + "_responses" off the end of the name. + +PH/08 Added -Mvc to output a copy of a message in RFC 2822 format. + +PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly + (without spaces) instead of just copying the configuration text. + +PH/10 Added the /noupdate option to the ratelimit ACL condition. + +PH/11 Added $max_received_linelength. + +PH/12 Added +ignore_defer and +include_defer to host lists. + +PH/13 Installed PCRE version 7.2. This needed some changes because of the new + way in which PCRE > 7.0 is built. + +PH/14 Implemented queue_only_load_latch. + +PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a + MAIL command. The effect was to mangle the value on 64-bit systems. + +PH/16 Another patch from the Sieve maintainer. + +PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper. + +PH/18 If a system quota error occurred while trying to create the file for + a maildir delivery, the message "Mailbox is full" was not appended to the + bounce if the delivery eventually timed out. Change 4.67/27 below applied + only to a quota excession during the actual writing of the file. + +PH/19 It seems that peer DN values may contain newlines (and other non-printing + characters?) which causes problems in log lines. The DN values are now + passed through string_printing() before being added to log lines. + +PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle + and InterBase are left for another time.) + +PH/21 Added message_body_newlines option. + +PH/22 Guard against possible overflow in moan_check_errorcopy(). + +PH/23 POSIX allows open() to be a macro; guard against that. + +PH/24 If the recipient of an error message contained an @ in the local part + (suitably quoted, of course), incorrect values were put in $domain and + $local_part during the evaluation of errors_copy. + + +Exim version 4.67 +----------------- + +MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address + is unset (happens when testing with -bh and -oMi isn't used). Thanks to + Jan Srzednicki. + +PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not + issue a MAIL command. + +PH/02 In an ACL statement such as + + deny dnslists = X!=127.0.0.2 : X=127.0.0.2 + + if a client was not listed at all, or was listed with a value other than + 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list, + the condition was not true (as it should be), so access was not denied. + The bug was that the ! inversion was incorrectly passed on to the second + item. This has been fixed. + +PH/03 Added additional dnslists conditions == and =& which are different from + = and & when the dns lookup returns more than one IP address. + +PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the + cipher suites used by GnuTLS. These options are ignored by OpenSSL. + +PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_ + FSYNC, which compiles an option called disable_fsync that allows for + bypassing fsync(). The documentation is heavily laced with warnings. + +SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket. + +PH/06 Some tidies to the infrastructure of the Test Suite that is concerned + with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT + to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile, + including adding "make clean"; (3) Added -fPIC when compiling the test + dynamically loaded module, to get rid of a warning. + +MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce + message fails, move_frozen_messages = true and ignore_bounce_errors_after + = 0s. The bug is otherwise harmless. + +PH/07 There was a bug in the dovecot authenticator such that the value of + $auth1 could be overwritten, and so not correctly preserved, after a + successful authentication. This usually meant that the value preserved by + the server_setid option was incorrect. + +PH/08 Added $smtp_count_at_connection_start, deliberately with a long name. + +PH/09 Installed PCRE release 7.0. + +PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being + run for batched SMTP input. It is now run at the start of every message + in the batch. While fixing this I discovered that the process information + (output by running exiwhat) was not always getting set for -bs and -bS + input. This is fixed, and it now also says "batched" for BSMTP. + +PH/11 Added control=no_pipelining. + +PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's + patch, slightly modified), and move the expansion of helo_data till after + the connection is made in the smtp transport (so it can use these + values). + +PH/13 Added ${rfc2047d: to decoded RFC 2047 strings. + +PH/14 Added log_selector = +pid. + +PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set. + +PH/16 Add ${if forany and ${if forall. + +PH/17 Added dsn_from option to vary the From: line in DSNs. + +PH/18 Flush SMTP output before performing a callout, unless control = + no_callout_flush is set. + +PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender + was true (the default) a successful delivery failed to delete the retry + item, thus causing premature timeout of the address. The bug is now + fixed. + +PH/20 Added hosts_avoid_pipelining to the smtp transport. + +PH/21 Long custom messages for fakedefer and fakereject are now split up + into multiline reponses in the same way that messages for "deny" and + other ACL rejections are. + +PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep, + with slight modification. + +PH/23 Applied sieve patches from the maintainer "tracking the latest notify + draft, changing the syntax and factoring some duplicate code". + +PH/24 When the log selector "outgoing_port" was set, the port was shown as -1 + for deliveries of the second and subsequent messages over the same SMTP + connection. + +PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and + ${reduce, with only minor "tidies". + +SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match. + +PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its + expansion side effects. + +PH/27 When a message times out after an over-quota error from an Exim-imposed + quota, the bounce message says "mailbox is full". This message was not + being given when it was a system quota that was exceeded. It now should + be the same. + +MH/03 Made $recipients available in local_scan(). local_scan() already has + better access to the recipient list through recipients_list[], but + $recipients can be useful in postmaster-provided expansion strings. + +PH/28 The $smtp_command and $smtp_command_argument variables were not correct + in the case of a MAIL command with additional options following the + address, for example: MAIL FROM: SIZE=1234. The option settings + were accidentally chopped off. + +PH/29 SMTP synchronization checks are implemented when a command is read - + there is a check that no more input is waiting when there shouldn't be + any. However, for some commands, a delay in an ACL can mean that it is + some time before the response is written. In this time, more input might + arrive, invalidly. So now there are extra checks after an ACL has run for + HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when + pipelining has not been advertised. + +PH/30 MH's patch to allow iscntrl() characters to be list separators. + +PH/31 Unlike :fail:, a custom message specified with :defer: was not being + returned in the SMTP response when smtp_return_error_details was false. + This has been fixed. + +PH/32 Change the Dovecot authenticator to use read() and write() on the socket + instead of the C I/O that was originally supplied, because problems were + reported on Solaris. + +PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in + Exim which did not show up earlier: it was assuming that a call to + SSL_CTX_set_info_callback() might give an error value. In fact, there is + no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback() + was a macro that became an assignment, so it seemed to work. This has + changed to a proper function call with a void return, hence the compile + error. Exim's code has been fixed. + +PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit + cpus. + +PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify". + +PH/36 Applied John Jetmore's patch to add -v functionality to exigrep. + +PH/37 If a message is not accepted after it has had an id assigned (e.g. + because it turns out to be too big or there is a timeout) there is no + "Completed" line in the log. When some messages of this type were + selected by exigrep, they were listed as "not completed". Others were + picked up by some special patterns. I have improved the selection + criteria to be more general. + +PH/38 The host_find_failed option in the manualroute router can now be set + to "ignore", to completely ignore a host whose IP address cannot be + found. If all hosts are ignored, the behaviour is controlled by the new + host_all_ignored option. + +PH/39 In a list of hosts for manualroute, if one item (either because of multi- + homing or because of multiple MX records with /mx) generated more than + one IP address, and the following item turned out to be the local host, + all the secondary addresses of the first item were incorrectly removed + from the list, along with the local host and any following hosts (which + is what is supposed to happen). + +PH/40 When Exim receives a message, it writes the login name, uid, and gid of + whoever called Exim into the -H file. In the case of the daemon it was + behaving confusingly. When first started, it used values for whoever + started the daemon, but after a SIGHUP it used the Exim user (because it + calls itself on a restart). I have changed the code so that it now always + uses the Exim user. + +PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a + message are rejected with the same error (e.g. no authentication or bad + sender address), and a DATA command is nevertheless sent (as can happen + with PIPELINING or a stupid MUA), the error message that was given to the + RCPT commands is included in the rejection of the DATA command. This is + intended to be helpful for MUAs that show only the final error to their + users. + +PH/42 Another patch from the Sieve maintainer. + +SC/02 Eximstats - Differentiate between permanent and temporary rejects. + Eximstats - Fixed some broken HTML links and added missing column headers + (Jez Hancock). + Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email + columns for Rejects, Temp Rejects, Ham, and Spam rows. + +SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables. + +PH/43 Yet another patch from the Sieve maintainer. + +PH/44 I found a way to check for a TCP/IP connection going away before sending + the response to the final '.' that terminates a message, but only in the + case where the client has not sent further data following the '.' + (unfortunately, this is allowed). However, in many cases there won't be + any further data because there won't be any more messages to send. A call + to select() can be used: if it shows that the input is "ready", there is + either input waiting, or the socket has been closed. An attempt to read + the next input character can distinguish the two cases. Previously, Exim + would have sent an OK response which the client would never have see. + This could lead to message repetition. This fix should cure that, at + least in a lot of common cases. + +PH/45 Do not advertise STARTTLS in response to HELP unless it would be + advertised in response to EHLO. + + +Exim version 4.66 +----------------- + +PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one + fixed by 4.65/MH/01 (is this a record?) are fixed: + + (i) An empty string was always treated as zero by the numeric comparison + operators. This behaviour has been restored. + + (ii) It is documented that the numeric comparison operators always treat + their arguments as decimal numbers. This was broken in that numbers + starting with 0 were being interpreted as octal. + + While fixing these problems I realized that there was another issue that + hadn't been noticed. Values of message_size_limit (both the global option + and the transport option) were treated as octal if they started with 0. + The documentation was vague. These values are now always treated as + decimal, and I will make that clear in the documentation. + + +Exim version 4.65 +----------------- + +TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with + Linux large file support (_FILE_OFFSET_BITS=64) on older glibc + versions. (#438) + +MH/01 Don't check that the operands of numeric comparison operators are + integers when their expansion is in "skipping" mode (fixes bug + introduced by 4.64-PH/07). + +PH/01 If a system filter or a router generates more than SHRT_MAX (32767) + child addresses, Exim now panics and dies. Previously, because the count + is held in a short int, deliveries were likely to be lost. As such a + large number of recipients for a single message is ridiculous + (performance will be very, very poor), I have chosen to impose a limit + rather than extend the field. + + +Exim version 4.64 +----------------- + +TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a + leftover -K file (the existence of which was triggered by #402). + While we were at it, introduced process PID as part of the -K + filename. This should rule out race conditions when creating + these files. + +TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing + processing considerably. Previous code took too long for large mails, + triggering a timeout which in turn triggers #401. + +TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used + in the DK code in transports.c. sendfile() is not really portable, + hence the _LINUX specificness. + +TF/01 In the add_headers option to the mail command in an Exim filter, + there was a bug that Exim would claim a syntax error in any + header after the first one which had an odd number of characters + in the field name. + +PH/01 If a server that rejects MAIL FROM:<> was the target of a sender + callout verification, Exim cached a "reject" for the entire domain. This + is correct for most verifications, but it is not correct for a recipient + verification with use_sender or use_postmaster set, because in that case + the callout does not use MAIL FROM:<>. Exim now distinguishes the special + case of MAIL FROM:<> rejection from other early rejections (e.g. + rejection of HELO). When verifying a recipient using a non-null MAIL + address, the cache is ignored if it shows MAIL FROM:<> rejection. + Whatever the result of the callout, the value of the domain cache is + left unchanged (for any other kind of callout, getting as far as trying + RCPT means that the domain itself is ok). + +PH/02 Tidied a number of unused variable and signed/unsigned warnings that + gcc 4.1.1 threw up. + +PH/03 On Solaris, an unexpectedly close socket (dropped connection) can + manifest itself as EPIPE rather than ECONNECT. When tidying away a + session, the daemon ignores ECONNECT errors and logs others; it now + ignores EPIPE as well. + +PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c + (quoted-printable decoding). + +PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and + later the small subsequent patch to fix an introduced bug. + +PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer. + +PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}. + +PH/08 An error is now given if message_size_limit is specified negative. + +PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables + to be given (somewhat) arbitrary names. + +JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced + in 4.64-PH/09. + +JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions, + miscellaneous code fixes + +PH/10 Added the log_reject_target ACL modifier to specify where to log + rejections. + +PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_ + hostname. This is wrong, because it relates to the incoming message (and + probably the interface on which it is arriving) and not to the outgoing + callout (which could be using a different interface). This has been + changed to use the value of the helo_data option from the smtp transport + instead - this is what is used when a message is actually being sent. If + there is no remote transport (possible with a router that sets up host + addresses), $smtp_active_hostname is used. + +PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various + tweaks were necessary in order to get it to work (see also 21 below): + (a) The code assumed that strncpy() returns a negative number on buffer + overflow, which isn't the case. Replaced with Exim's string_format() + function. + (b) There were several signed/unsigned issues. I just did the minimum + hacking in of casts. There is scope for a larger refactoring. + (c) The code used strcasecmp() which is not a standard C function. + Replaced with Exim's strcmpic() function. + (d) The code set only $1; it now sets $auth1 as well. + (e) A simple test gave the error "authentication client didn't specify + service in request". It would seem that Dovecot has changed its + interface. Fortunately there's a specification; I followed it and + changed what the client sends and it appears to be working now. + +PH/13 Added $message_headers_raw to provide the headers without RFC 2047 + decoding. + +PH/14 Corrected misleading output from -bv when -v was also used. Suppose the + address A is aliased to B and C, where B exists and C does not. Without + -v the output is "A verified" because verification stops after a + successful redirection if more than one address is generated. However, + with -v the child addresses are also verified. Exim was outputting "A + failed to verify" and then showing the successful verification for C, + with its parentage. It now outputs "B failed to verify", showing B's + parentage before showing the successful verification of C. + +PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to + look up a TXT record in a specific list after matching in a combined + list. + +PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and + RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when + they consult the DNS. I had assumed they would set it the way they + wanted; and indeed my experiments on Linux seem to show that in some + cases they do (I could influence IPv6 lookups but not IPv4 lookups). + To be on the safe side, however, I have now made the interface to + host_find_byname() similar to host_find_bydns(), with an argument + containing the DNS resolver options. The host_find_byname() function now + sets these options at its start, just as host_find_bydns() does. The smtp + transport options dns_qualify_single and dns_search_parents are passed to + host_find_byname() when gethostbyname=TRUE in this transport. Other uses + of host_find_byname() use the default settings of RES_DEFNAMES + (qualify_single) but not RES_DNSRCH (search_parents). + +PH/17 Applied (a modified version of) Nico Erfurth's patch to make + spool_read_header() do less string testing, by means of a preliminary + switch on the second character of optional "-foo" lines. (This is + overdue, caused by the large number of possibilities that now exist. + Originally there were few.) While I was there, I also converted the + str(n)cmp tests so they don't re-test the leading "-" and the first + character, in the hope this might squeeze out yet more improvement. + +PH/18 Two problems with "group" syntax in header lines when verifying: (1) The + flag allowing group syntax was set by the header_syntax check but not + turned off, possible causing trouble later; (2) The flag was not being + set at all for the header_verify test, causing "group"-style headers to + be rejected. I have now set it in this case, and also caused header_ + verify to ignore an empty address taken from a group. While doing this, I + came across some other cases where the code for allowing group syntax + while scanning a header line wasn't quite right (mostly, not resetting + the flag correctly in the right place). These bugs could have caused + trouble for malformed header lines. I hope it is now all correct. + +PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called + with the "reply" argument non-NULL. The code, however (which originally + came from elsewhere) had *some* tests for NULL when it wrote to *reply, + but it didn't always do it. This confused somebody who was copying the + code for some other use. I have removed all the tests. + +PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a + feature that was used to support insecure browsers during the U.S. crypto + embargo. It requires special client support, and Exim is probably the + only MTA that supported it -- and would never use it because real RSA is + always available. This code has been removed, because it had the bad + effect of slowing Exim down by computing (never used) parameters for the + RSA_EXPORT functionality. + +PH/21 On the advice of Timo Sirainen, added a check to the dovecot + authenticator to fail if there's a tab character in the incoming data + (there should never be unless someone is messing about, as it's supposed + to be base64-encoded). Also added, on Timo's advice, the "secured" option + if the connection is using TLS or if the remote IP is the same as the + local IP, and the "valid-client-cert option" if a client certificate has + been verified. + +PH/22 As suggested by Dennis Davis, added a server_condition option to *all* + authenticators. This can be used for authorization after authentication + succeeds. (In the case of plaintext, it servers for both authentication + and authorization.) + +PH/23 Testing for tls_required and lost_connection in a retry rule didn't work + if any retry times were supplied. + +PH/24 Exim crashed if verify=helo was activated during an incoming -bs + connection, where there is no client IP address to check. In this + situation, the verify now always succeeds. + +PH/25 Applied John Jetmore's -Mset patch. + +PH/26 Added -bem to be like -Mset, but loading a message from a file. + +PH/27 In a string expansion for a processed (not raw) header when multiple + headers of the same name were present, leading whitespace was being + removed from all of them, but trailing whitespace was being removed only + from the last one. Now trailing whitespace is removed from each header + before concatenation. Completely empty headers in a concatenation (as + before) are ignored. + +PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John + Jetmore). It would have mis-read ACL variables from pre-4.61 spool files. + +PH/29 [Removed. This was a change that I later backed out, and forgot to + correct the ChangeLog entry (that I had efficiently created) before + committing the later change.] + +PH/30 Exim was sometimes attempting to deliver messages that had suffered + address errors (4xx response to RCPT) over the same connection as other + messages routed to the same hosts. Such deliveries are always "forced", + so retry times are not inspected. This resulted in far too many retries + for the affected addresses. The effect occurred only when there were more + hosts than the hosts_max_try setting in the smtp transport when it had + the 4xx errors. Those hosts that it had tried were not added to the list + of hosts for which the message was waiting, so if all were tried, there + was no problem. Two fixes have been applied: + + (i) If there are any address or message errors in an SMTP delivery, none + of the hosts (tried or untried) are now added to the list of hosts + for which the message is waiting, so the message should not be a + candidate for sending over the same connection that was used for a + successful delivery of some other message. This seems entirely + reasonable: after all the message is NOT "waiting for some host". + This is so "obvious" that I'm not sure why it wasn't done + previously. Hope I haven't missed anything, but it can't do any + harm, as the worst effect is to miss an optimization. + + (ii) If, despite (i), such a delivery is accidentally attempted, the + routing retry time is respected, so at least it doesn't keep + hammering the server. + +PH/31 Installed Andrew Findlay's patch to close the writing end of the socket + in ${readsocket because some servers need this prod. + +PH/32 Added some extra debug output when updating a wait-xxx database. + +PH/33 The hint "could be header name not terminated by colon", which has been + given for certain expansion errors for a long time, was not being given + for the ${if def:h_colon_omitted{... case. + +PH/34 The spec says: "With one important exception, whenever a domain list is + being scanned, $domain contains the subject domain." There was at least + one case where this was not true. + +PH/35 The error "getsockname() failed: connection reset by peer" was being + written to the panic log as well as the main log, but it isn't really + panic-worthy as it just means the connection died rather early on. I have + removed the panic log writing for the ECONNRESET error when getsockname() + fails. + +PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue + runs only) independently of the message's sender address. This meant + that, if the 4xx error was in fact related to the sender, a different + message to the same recipient with a different sender could confuse + things. In particualar, this can happen when sending to a greylisting + server, but other circumstances could also provoke similar problems. + I have changed the default so that the retry time for these errors is now + based a combination of the sender and recipient addresses. This change + can be overridden by setting address_retry_include_sender=false in the + smtp transport. + +PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the + remote server are returned as part of bounce messages. This was not + happening for LMTP over a pipe (the lmtp transport), but now it is the + same for both kinds of LMTP. + +PH/38 Despite being documented as not happening, Exim was rewriting addresses + in header lines that were in fact CNAMEs. This is no longer the case. + +PH/39 If -R or -S was given with -q