Fix sieve QP regression from Coverity cleanups
[exim.git] / doc / doc-txt / ChangeLog
1 Change log file for Exim from version 4.21
2 ------------------------------------------
3 This document describes *changes* to previous versions, that might
4 affect Exim's operation, with an unchanged configuration file. For new
5 options, and new features, see the NewStuff file next to this ChangeLog.
8 Exim version 4.90
9 -----------------
11 JH/01 Rework error string handling in TLS interface so that the caller in
12 more cases is responsible for logging. This permits library-sourced
13 string to be attached to addresses during delivery, and collapses
14 pairs of long lines into single ones.
16 PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
17 during configuration. Wildcards are allowed and expanded.
19 JH/02 Rework error string handling in DKIM to pass more info back to callers.
20 This permits better logging.
22 JH/03 Rework the transport continued-connection mechanism: when TLS is active,
23 do not close it down and have the child transport start it up again on
24 the passed-on TCP connection. Instead, proxy the child (and any
25 subsequent ones) for TLS via a unix-domain socket channel. Logging is
26 affected: the continued delivery log lines do not have any DNSSEC, TLS
27 Certificate or OCSP information. TLS cipher information is still logged.
29 JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
30 identical IP addresses on different listening ports. Will also affect
31 "exiwhat" output.
33 PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
34 add noisy ifdef guards to special-case this sillyness.
35 Patch from Bernd Kuhls.
37 JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
38 than 255 are no longer allowed.
40 JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
41 Disable the session-cache too, which might reduce our load. Since we
42 currrectly use a new context for every connection, both as server and
43 client, there is no benefit for these.
44 GnuTLS appears to not support tickets server-side by default (we don't
45 call gnutls_session_ticket_enable_server()) but client side is enabled
46 by default on recent versions (3.1.3 +) unless the PFS priority string
47 is used (3.2.4 +).
49 PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
50 <>.
52 JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
53 the check for any unsuccessful recipients did not notice the limit, and
54 erroneously found still-pending ones.
56 JH/08 Pipeline CHUNKING command and data together, on kernels that support
57 MSG_MORE. Only in-clear (not on TLS connections).
59 JH/09 Avoid using a temporary file during transport using dkim. Unless a
60 transport-filter is involved we can buffer the headers in memory for
61 creating the signature, and read the spool data file once for the
62 signature and again for transmission.
64 JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
65 4.77 as the kernel support then wasn't solid, having issues in 64bit
66 mode. Now, it's been long enough. Add support for FreeBSD also.
68 JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
69 case where the routing stage had gathered several addresses to send to
70 a host before calling the transport for the first, we previously failed
71 to close down TLS in the old transport process before passing the TCP
72 connection to the new process. The new one sent a STARTTLS command
73 which naturally failed, giving a failed delivery and bloating the retry
74 database. Investigation and fix prototype from Wolfgang Breyha.
76 JH/12 Fix check on SMTP command input synchronisation. Previously there were
77 false-negatives in the check that the sender had not preempted a response
78 or prompt from Exim (running as a server), due to that code's lack of
79 awareness of the SMTP input buffering.
81 PP/04 Add commandline_checks_require_admin option.
82 Exim drops privileges sanely, various checks such as -be aren't a
83 security problem, as long as you trust local users with access to their
84 own account. When invoked by services which pass untrusted data to
85 Exim, this might be an issue. Set this option in main configuration
86 AND make fixes to the calling application, such as using `--` to stop
87 processing options.
89 JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
90 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
91 responses to those, into a single TLS record each way (this usually means
92 a single packet). As a side issue, smtp_enforce_sync now works on TLS
93 connections.
95 PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
96 affects you only if you're dancing at the edge of the param size limits.
97 If you are, and this message makes sense to you, then: raise the
98 configured limit or use OpenSSL 1.1. Nothing we can do for older
99 versions.
101 JH/14 For the "sock" variant of the malware scanner interface, accept an empty
102 cmdline element to get the documented default one. Previously it was
103 inaccessible.
105 JH/15 Fix a crash in the smtp transport caused when two hosts in succession
106 are unsuable for non-message-specific reasons - eg. connection timeout,
107 banner-time rejection.
109 JH/16 Fix logging of delivery remote port, when specified by router, under
110 callout/hold.
112 PP/06 Repair manualroute's ability to take options in any order, even if one
113 is the name of a transport.
114 Fixes bug 2140.
116 HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
118 JH/17 Change the list-building routines interface to use the expanding-string
119 triplet model, for better allocation and copying behaviour.
121 JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
122 Previously it was constructed the first time a possibly-matching string
123 was met in the configuration file input during startup; now it is done
124 during compilation.
126 JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
127 compatible one, to avoid the (poorly documented) possibility of a config
128 file in the working directory redirecting the DB files, possibly correpting
129 some existing file. CVE-2017-10140 assigned for BDB.
131 JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
132 cache-hot. Previously, although the result was properly cached, the
133 initial verify call returned a defer.
135 JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
136 the main verify for receipient in uncached-mode.
138 JH/22 Retire historical build files to an "unsupported" subdir. These are
139 defined as "ones for which we have no current evidence of testing".
141 JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
142 if present. Previously it was ignored.
144 JH/24 Start using specified-initialisers in C structure init coding. This is
145 a C99 feature (it's 2017, so now considered safe).
147 JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
148 if was a fixed-sized field and bitmask ops via macros; it is now more
149 extensible.
151 PP/07 GitHub PR 56: Apply MariaDB build fix.
152 Patch provided by Jaroslav Škarvada.
154 PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
155 during Coverity cleanups [4.87 JH/47]
156 Diagnosis and fix provided by Michael Fischer v. Mollard.
159 Exim version 4.89
160 -----------------
162 JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
163 than -2003 did; needs libidn2 in addition to libidn.
165 JH/02 The path option on a pipe transport is now expanded before use.
167 PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
168 Patch provided by "Björn", documentation fix added too.
170 JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
171 missing a wire-to-host endian conversion.
173 JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
174 close after a BDAT command line could be taken as a following command,
175 giving a synch failure. Fix by only checking for synch immediately
176 before acknowledging the chunk.
178 PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
179 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
180 macro. Patches provided by Josh Soref.
182 JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
183 Previously we did not; the RFC seems ambiguous and VRFY is not listed
184 by IANA as a service extension. However, John Klensin suggests that we
185 should.
187 JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
188 the dkim code may be unix-mode line endings rather than smtp wire-format
189 CRLF, so prepend a CR to any bare LF.
191 JH/07 Rationalise the coding for callout smtp conversations and transport ones.
192 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
194 JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
195 the first were themselves being wrongly included in the feed into dkim
196 processing; with most chunk sizes in use this resulted in an incorrect
197 body hash calculated value.
199 JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
200 DKIM signature block, for verification. Although advised against by
201 standards it is specifically not ruled illegal.
203 JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
205 JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
206 missing a body hash (the bh= tag).
208 JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
209 It seems that HAProxy sends the Proxy Protocol information in clear and
210 only then does a TLS startup, so do the same.
212 JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
213 TCP connections (such as for Spamd) unless the daemon successfully set
214 Fast Open mode on its listening sockets. This fixes breakage seen on
215 too-old kernels or those not configured for Fast Open, at the cost of
216 requiring both directions being enabled for TFO, and TFO never being used
217 by non-daemon-related Exim processes.
219 JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
220 endings, at least on the first header line. Try to canonify any that get
221 past that check, despite the cost.
223 JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
224 now limited to an arbitrary five deep, while parsing addresses with the
225 strip_excess_angle_brackets option enabled.
227 PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
228 instead leave the unprompted TLS handshake in socket buffer for the
229 TLS library to consume.
231 PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
233 PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
235 JH/16 Drop variables when they go out of scope. Memory management drops a whole
236 region in one operation, for speed, and this leaves assigned pointers
237 dangling. Add checks run only under the testsuite which checks all
238 variables at a store-reset and panics on a dangling pointer; add code
239 explicitly nulling out all the variables discovered. Fixes one known
240 bug: a transport crash, where a dangling pointer for $sending_ip_address
241 originally assigned in a verify callout, is re-used.
243 PP/06 Drop '.' from @INC in various Perl scripts.
245 PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
247 PP/08 Reduce a number of compilation warnings under clang; building with
248 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
249 should be warning-free.
251 JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
253 HS/01 Fix portability problems introduced by PP/08 for platforms where
254 realloc(NULL) is not equivalent to malloc() [SunOS et al].
256 HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
257 chunk. This allows us to accept broken chunked messages. We need a more
258 general solution here.
260 PP/09 Wrote util/ to help recover
261 already-broken messages in the queue.
263 JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
265 JH/19 Fix reference counting bug in routing-generated-address tracking.
268 Exim version 4.88
269 -----------------
271 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
272 supports it and a size is available (ie. the sending peer gave us one).
274 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
275 years of being deprecated). The replacements are the ACLs
276 acl_smtp_mime and acl_not_smtp_mime.
278 JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
279 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
280 or even an in-clear connection were permitted. Now, if the host lookup
281 was dnssec and dane was requested then the host is only used if the
282 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
283 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
284 if one fails this test.
285 This means that a poorly-configured remote DNS will make it incommunicado;
286 but it protects against a DNS-interception attack on it.
288 JH/04 Bug 1810: make continued-use of an open smtp transport connection
289 non-noisy when a race steals the message being considered.
291 JH/05 If main configuration option tls_certificate is unset, generate a
292 self-signed certificate for inbound TLS connections.
294 JH/06 Bug 165: hide more cases of password exposure - this time in expansions
295 in rewrites and routers.
297 JH/07 Retire gnutls_require_mac These were nonfunctional since 4.80
298 and logged a warning sing 4.83; now they are a configuration file error.
300 JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
301 (lacking @domain). Apply the same qualification processing as RCPT.
303 JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
305 JH/10 Support ${sha256:} applied to a string (as well as the previous
306 certificate).
308 JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
309 a cutthrough deliver is pending, as we always want to make a connection.
310 This also avoids re-routing the message when later placing the cutthrough
311 connection after a verify cache hit.
312 Do not update it with the verify result either.
314 JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
315 when routing results in more than one destination address.
317 JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
318 signing (which inhibits the cutthrough capability). Previously only
319 the presence of an option was tested; now an expansion evaluating as
320 empty is permissible (obviously it should depend only on data available
321 when the cutthrough connection is made).
323 JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
324 the relevant preceding SMTP command did not note the pipelining mode.
326 JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
327 Previously they were not counted.
329 JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
330 as one having no matching records. Previously we deferred the message
331 that needed the lookup.
333 JH/17 Fakereject: previously logged as a normal message arrival "<="; now
334 distinguished as "(=".
336 JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
337 for missing MX records. Previously it only worked for missing A records.
339 JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
341 JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
342 after the data-go-ahead and data-ack. Patch from Jason Betts.
344 JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
345 even for a "none" policy. Patch from Tony Meyer.
347 JH/22 Fix continued use of a connection for further deliveries. If a port was
348 specified by a router, it must also match for the delivery to be
349 compatible.
351 JH/23 Bug 1874: fix continued use of a connection for further deliveries.
352 When one of the recipients of a message was unsuitable for the connection
353 (has no matching addresses), we lost track of needing to mark it
354 deferred. As a result mail would be lost.
356 JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
358 JH/25 Decoding ACL controls is now done using a binary search; the source code
359 takes up less space and should be simpler to maintain. Merge the ACL
360 condition decode tables also, with similar effect.
362 JH/26 Fix problem with one_time used on a redirect router which returned the
363 parent address unchanged. A retry would see the parent address marked as
364 delivered, so not attempt the (identical) child. As a result mail would
365 be lost.
367 JH/27 Fix a possible security hole, wherein a process operating with the Exim
368 UID can gain a root shell. Credit to for
369 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
370 itself :(
372 JH/28 Enable {spool,log} filesystem space and inode checks as default.
373 Main config options check_{log,spool}_{inodes,space} are now
374 100 inodes, 10MB unless set otherwise in the configuration.
376 JH/29 Fix the connection_reject log selector to apply to the connect ACL.
377 Previously it only applied to the main-section connection policy
378 options.
380 JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
382 PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
383 by me. Added RFC7919 DH primes as an alternative.
385 PP/02 Unbreak build via pkg-config with new hash support when crypto headers
386 are not in the system include path.
388 JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
389 GnuTLS, when a session startup failed (eg because the client disconnected)
390 Exim did stdio operations after fclose. This was exposed by a recent
391 change which nulled out the file handle after the fclose.
393 JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
394 signed directly by the cert-signing cert, rather than an intermediate
395 OCSP-signing cert. This is the model used by LetsEncrypt.
397 JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
399 HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
400 an incoming connection.
402 HS/02 Bug 1802: Do not half-close the connection after sending a request
403 to rspamd.
405 HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
406 fallback to "prime256v1".
408 JH/34 SECURITY: Use proper copy of DATA command in error message.
409 Could leak key material. Remotely exploitable. CVE-2016-9963.
412 Exim version 4.87
413 -----------------
415 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
416 and 3.4.4 - once the server is enabled to respond to an OCSP request
417 it does even when not requested, resulting in a stapling non-aware
418 client dropping the TLS connection.
420 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
421 support variable-length bit vectors. No functional change.
423 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
424 The I= interface field on outgoing lines is now after the H= remote
425 host field, same as incoming lines. There is a separate
426 outgoing_interface log selector which allows you to disable the
427 outgoing I= field.
429 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
430 If not running log_selector +smtp_connection the mainlog would be held
431 open indefinitely after a "too many connections" event, including to a
432 deleted file after a log rotate. Leave the per net connection logging
433 leaving it open for efficiency as that will be quickly detected by the
434 check on the next write.
436 HS/01 Bug 1671: Fix post transport crash.
437 Processing the wait-<transport> messages could crash the delivery
438 process if the message IDs didn't exist for some reason. When
439 using 'split_spool_directory=yes' the construction of the spool
440 file name failed already, exposing the same netto behaviour.
442 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
443 mime_regex ACL conditions.
445 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
446 to DSN fail messages (bounces): remote IP, remote greeting, remote response
447 to HELO, local diagnostic string.
449 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
450 log line to debug. Even when configured with a tls authenticator many
451 client connections are expected to not authenticate in this way, so
452 an authenticate fail is not an error.
454 HS/02 Add the Exim version string to the process info. This way exiwhat
455 gives some more detail about the running daemon.
457 JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
458 matter for fast-change records such as DNSBLs.
460 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
461 retry record, even if constant. There may be multiple transports with
462 different interface settings and the retry behaviour needs to be kept
463 distinct.
465 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
467 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
469 JH/10 Bug 840: fix log_defer_output option of pipe transport
471 JH/11 Bug 830: use same host for all RCPTS of a message, even under
472 hosts_randomize. This matters a lot when combined with mua_wrapper.
474 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
475 ${quote_pgsql:<string>} operator.
477 JH/13 Bug 1708: avoid misaligned access in cached lookup.
479 JH/14 Change header file name for freeradius-client. Relevant if compiling
480 with Radius support; from the Gentoo tree and checked under Fedora.
482 JH/15 Bug 1712: Introduce $prdr_requested flag variable
484 JH/16 Bug 1714: Permit an empty string as expansion result for transport
485 option transport_filter, meaning no filtering.
487 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
489 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
490 defaults to "*" (all hosts). The variable is now available when not built
491 with TLS, default unset, mainly to enable keeping the testsuite sane.
492 If a server certificate is not supplied (via tls_certificate) an error is
493 logged, and clients will find TLS connections fail on startup. Presumably
494 they will retry in-clear.
495 Packagers of Exim are strongly encouraged to create a server certificate
496 at installation time.
498 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
499 with the $config_file variable.
501 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
502 in transport context, after the attempt, and per-recipient. The latter type
503 is per host attempted. The event data is the error message, and the errno
504 information encodes the lookup type (A vs. MX) used for the (first) host,
505 and the trailing two digits of the smtp 4xx response.
507 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
508 to write to mainlog (or rejectlog, paniclog) in the window between file
509 creation and permissions/ownership being changed. Particularly affects
510 installations where exicyclog is run as root, rather than exim user;
511 result is that the running daemon panics and dies.
513 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
515 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
516 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
517 "pri" and "weight". Note that the previous implicit priority given by the
518 list order is no longer honoured.
520 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
521 for DKIM processing.
523 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
524 by defining SUPPORT_SOCKS.
526 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
527 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
528 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
529 variables are renamed to proxy_{local,external}_{address,port}.
531 JH/27 Move Internationalisation support from Experimental to mainline, enabled
532 for a build by defining SUPPORT_I18N
534 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
535 of the query string, and make ${quote_redis:} do that quoting.
537 JH/29 Move Events support from Experimental to mainline, enabled by default
538 and removable for a build by defining DISABLE_EVENT.
540 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
542 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
543 cached by the daemon.
545 JH/32 Move Redis support from Experimental to mainline, enabled for a build
546 by defining LOOKUP_REDIS. The libhiredis library is required.
548 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
549 keys are given for lookup.
551 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
552 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
553 only supported when built with TLS support. The PolarSSL SHA routines
554 are still used when the TLS library is too old for convenient support.
556 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
557 openssl_options), for security. OpenSSL forces this from version 1.1.0
558 server-side so match that on older versions.
560 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
561 allocation for $value could be released as the expansion processing
562 concluded, but leaving the global pointer active for it.
564 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
565 and to use the domains and local_parts ACL conditions.
567 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
568 incorrectly not doubled on cutthrough transmission, hence seen as a
569 body-termination at the receiving system - resulting in truncated mails.
570 Commonly the sender saw a TCP-level error, and retransmitted the message
571 via the normal store-and-forward channel. This could result in duplicates
572 received - but deduplicating mailstores were liable to retain only the
573 initial truncated version.
575 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
577 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
579 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
580 we're in there, support oversigning also; bug 1309.
582 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
584 HS/04 Add support for keep_environment and add_environment options.
586 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
587 either intentional arithmetic overflow during PRNG, or testing config-
588 induced overflows.
590 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
591 delivery resulted in actual delivery. Cancel cutthrough before DATA
592 stage.
594 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
595 rejects a recipient: pass the reject to the originator.
597 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
598 Many were false-positives and ignorable, but it's worth fixing the
599 former class.
601 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
602 for the new environment-manipulation done at startup. Move the routines
603 from being local to tls.c to being global via the os.c file.
605 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
606 an extract embedded as result-arg for a map, the first arg for extract
607 is unavailable so we cannot tell if this is a numbered or keyed
608 extraction. Accept either.
611 Exim version 4.86
612 -----------------
614 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
615 expanded.
617 JH/02 The smtp transport option "multi_domain" is now expanded.
619 JH/03 The smtp transport now requests PRDR by default, if the server offers
620 it.
622 JH/04 Certificate name checking on server certificates, when exim is a client,
623 is now done by default. The transport option tls_verify_cert_hostnames
624 can be used to disable this per-host. The build option
627 JH/05 The value of the tls_verify_certificates smtp transport and main options
628 default to the word "system" to access the system default CA bundle.
629 For GnuTLS, only version 3.0.20 or later.
631 JH/06 Verification of the server certificate for a TLS connection is now tried
632 (but not required) by default. The verification status is now logged by
633 default, for both outbound TLS and client-certificate supplying inbound
634 TLS connections
636 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
637 sites use this now.
639 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
640 Status Notification (bounce) messages are now MIME format per RFC 3464.
641 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
642 under the control of the dsn_advertise_hosts option, and routers may
643 have a dsn_lasthop option.
645 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
646 default, modifiable by a malware= option. The list separator for
647 the options can now be changed in the usual way. Bug 68.
649 JH/10 The smtp_receive_timeout main option is now expanded before use.
651 JH/11 The incoming_interface log option now also enables logging of the
652 local interface on delivery outgoing connections.
654 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
655 if the interface and destination host and port all match.
657 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
658 /defer_ok option.
660 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
661 Patch from Andrew Lewis.
663 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
664 now supports optional time-restrictions, weighting, and priority
665 modifiers per server. Patch originally by <>.
667 JH/16 The spamd_address main option now supports a mixed list of local
668 and remote servers. Remote servers can be IPv6 addresses, and
669 specify a port-range.
671 JH/17 Bug 68: The spamd_address main option now supports an optional
672 timeout value per server.
674 JH/18 Bug 1581: Router and transport options headers_add/remove can
675 now have the list separator specified.
677 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
678 option values.
680 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
681 under OpenSSL.
683 JH/21 Support for the A6 type of dns record is withdrawn.
685 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
686 rather than the verbs used.
688 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
689 from 255 to 1024 chars.
691 JH/24 Verification callouts now attempt to use TLS by default.
693 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
694 are generic router options now. The defaults didn't change.
696 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
697 Original patch from Alexander Shikoff, worked over by JH.
699 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
700 files if ZCAT_COMMAND is not executable.
702 JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
704 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
706 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
707 Normally benign, it bites when the pair was led to by a CNAME;
708 modern usage is to not canonicalize the domain to a CNAME target
709 (and we were inconsistent anyway for A-only vs AAAA+A).
711 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
713 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
714 when evaluating $sender_host_dnssec.
716 JH/31 Check the HELO verification lookup for DNSSEC, adding new
717 $sender_helo_dnssec variable.
719 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
721 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
723 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
725 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
726 documented as working, but never had. Support all but $spam_report.
728 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
729 added for tls authenticator.
731 HS/03 Add perl_taintmode main config option
734 Exim version 4.85
735 -----------------
737 TL/01 When running the test suite, the README says that variables such as
738 no_msglog_check are global and can be placed anywhere in a specific
739 test's script, however it was observed that placement needed to be near
740 the beginning for it to behave that way. Changed the runtest perl
741 script to read through the entire script once to detect and set these
742 variables, reset to the beginning of the script, and then run through
743 the script parsing/test process like normal.
745 TL/02 The BSD's have an arc4random API. One of the functions to induce
746 adding randomness was arc4random_stir(), but it has been removed in
747 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
748 function when detected.
750 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
751 cause callback expansion.
753 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
754 syntax errors in an expansion can be treated as a string instead of
755 logging or causing an error, due to the internal use of bool_lax
756 instead of bool when processing it.
758 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
759 server certificates when making smtp deliveries.
761 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
763 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
765 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
767 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
768 Merged patch from Sebastian Wiedenroth.
770 JH/05 Fix results-pipe from transport process. Several recipients, combined
771 with certificate use, exposed issues where response data items split
772 over buffer boundaries were not parsed properly. This eventually
773 resulted in duplicates being sent. This issue only became common enough
774 to notice due to the introduction of connection certificate information,
775 the item size being so much larger. Found and fixed by Wolfgang Breyha.
777 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
778 size buffer was used, resulting in syntax errors when an expansion
779 exceeded it.
781 JH/07 Add support for directories of certificates when compiled with a GnuTLS
782 version 3.3.6 or later.
784 JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
785 is EXPERIMENTAL_EVENT, the main-configuration and transport options
786 both become "event_action", the variables become $event_name, $event_data
787 and $event_defer_errno. There is a new variable $verify_mode, usable in
788 routers, transports and related events. The tls:cert event is now also
789 raised for inbound connections, if the main configuration event_action
790 option is defined.
792 TL/06 In test suite, disable OCSP for old versions of openssl which contained
793 early OCSP support, but no stapling (appears to be less than 1.0.0).
795 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
796 server certificate names available under the smtp transport option
797 "tls_verify_cert_hostname" now do not permit multi-component wildcard
798 matches.
800 JH/10 Time-related extraction expansions from certificates now use the main
801 option "timezone" setting for output formatting, and are consistent
802 between OpenSSL and GnuTLS compilations. Bug 1541.
804 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
805 encoded parameter in the incoming message. Bug 1558.
807 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
808 include certificate info, eximon was claiming there were spoolfile
809 syntax errors.
811 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
813 JH/14 Log delivery-related information more consistently, using the sequence
814 "H=<name> [<ip>]" wherever possible.
816 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
817 are problematic for Debian distribution, omit them from the release
818 tarball.
820 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
822 JH/16 Fix string representation of time values on 64bit time_t architectures.
823 Bug 1561.
825 JH/17 Fix a null-indirection in certextract expansions when a nondefault
826 output list separator was used.
829 Exim version 4.84
830 -----------------
831 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
832 checkers that were complaining about end of non-void function with no
833 return.
835 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
836 This was a regression introduced in 4.83 by another bugfix.
838 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
840 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
841 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
844 Exim version 4.83
845 -----------------
847 TF/01 Correctly close the server side of TLS when forking for delivery.
849 When a message was received over SMTP with TLS, Exim failed to clear up
850 the incoming connection properly after forking off the child process to
851 deliver the message. In some situations the subsequent outgoing
852 delivery connection happened to have the same fd number as the incoming
853 connection previously had. Exim would try to use TLS and fail, logging
854 a "Bad file descriptor" error.
856 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
857 utilities have not been installed.
859 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
860 temporary space as the ACL may create new global variables.
862 TL/01 LDAP support uses per connection or global context settings, depending
863 upon the detected version of the libraries at build time.
865 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
866 to extract and use the src ip:port in logging and expansions as if it
867 were a direct connection from the outside internet. PPv2 support was
868 updated based on HAProxy spec change in May 2014.
870 JH/02 Add ${listextract {number}{list}{success}{fail}}.
872 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
873 Properly escape header and check for NULL return.
875 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
876 not dns_use_dnssec.
878 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
880 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
881 characters in header names, implemented as a verify condition.
882 Contributed by Michael Fischer v. Mollard.
884 TL/05 Rename SPF condition results err_perm and err_temp to standardized
885 results permerror and temperror. Previous values are deprecated but
886 still accepted. In a future release, err_perm and err_temp will be
887 completely removed, which will be a backward incompatibility if the
888 ACL tests for either of these two old results. Patch contributed by
889 user bes-internal on the mailing list.
891 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
893 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
894 selectors, in both main and reject logs.
896 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
897 failed delivery.
899 JH/07 Add malware type "sock" for talking to simple daemon.
901 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
903 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
904 routers/transports under cutthrough routing.
906 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
907 numbers. Touch up "bool" conditional to keep the same definition.
909 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
911 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
913 JH/12 Expand items in router/transport headers_add or headers_remove lists
914 individually rather than the list as a whole. Bug 1452.
916 Required for reasonable handling of multiple headers_ options when
917 they may be empty; requires that headers_remove items with embedded
918 colons must have them doubled (or the list-separator changed).
920 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
921 view the policy declared in the DMARC record. Currently, $dmarc_status
922 is a combined value of both the record presence and the result of the
923 analysis.
925 JH/13 Fix handling of $tls_cipher in (non-verify) transport. Bug 1455.
927 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
928 dnslookup router and the smtp transport (applying to the forward
929 lookup).
931 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
932 of ldap servers used for a specific lookup. Patch provided by Heiko
933 Schlichting.
935 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
936 New variable $lookup_dnssec_authenticated for observability.
938 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
939 Patch submitted by Lars Timman.
941 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
943 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
944 Requires trusted mode and valid format message id, aborts otherwise.
945 Patch contributed by Heiko Schlichting.
947 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
948 certextract with support for various fields. Bug 1358.
950 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
951 is requested by default, modifiable by smtp transport option
952 hosts_request_ocsp.
954 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
955 operate on certificate variables to give certificate fingerprints
956 Also new ${sha256:cert_variable}.
958 JH/23 The PRDR feature is moved from being Experimental into the mainline.
960 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
961 Christian Aistleitner.
963 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
965 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
966 file. Patch from Wolfgang Breyha.
968 JH/25 Expand the coverage of the delivery $host and $host_address to
969 client authenticators run in verify callout. Bug 1476.
971 JH/26 Port service names are now accepted for tls_on_connect_ports, to
972 align with daemon_smtp_ports. Bug 72.
974 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
975 support and error reporting did not work properly.
977 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
978 and is readable. Patch from Andrew Colin Kissa.
980 TL/14 Enhance documentation of ${run expansion and how it parses the
981 commandline after expansion, particularly in the case when an
982 unquoted variable expansion results in an empty value.
984 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
986 PP/02 Fix internal collision of T_APL on systems which support RFC3123
987 by renaming away from it. Addresses GH issue 15, reported by
988 Jasper Wallace.
990 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
992 TL/15 SECURITY: prevent double expansion in math comparison functions
993 (can expand unsanitized data). Not remotely exploitable.
994 CVE-2014-2972
997 Exim version 4.82
998 -----------------
1000 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1002 PP/02 Make -n do something, by making it not do something.
1003 When combined with -bP, the name of an option is not output.
1005 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1006 by GnuTLS.
1008 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1009 $sender_host_name and config options to manage this, and basic check
1010 routines.
1012 PP/05 DSCP support for outbound connections and control modifier for inbound.
1014 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
1015 (Only plugin which currently uses this is kerberos4, which nobody should
1016 be using, but we should make it available and other future plugins might
1017 conceivably use it, even though it would break NAT; stuff *should* be
1018 using channel bindings instead).
1020 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
1021 name; added for Sendmail compatibility; requires admin caller.
1022 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1023 just ignore it); requires trusted caller.
1024 Also parse but ignore: -Ac -Am -X<logfile>
1025 Bugzilla 1117.
1027 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
1029 TL/02 Add +smtp_confirmation as a default logging option.
1031 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1032 Patch by Magnus Holmgren from 2007-02-20.
1034 TL/04 Bugzilla 1281 - Spec typo.
1035 Bugzilla 1283 - Spec typo.
1036 Bugzilla 1290 - Spec grammar fixes.
1038 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
1040 TL/06 Add Experimental DMARC support using libopendmarc libraries.
1042 TL/07 Fix an out of order global option causing a segfault. Reported to dev
1043 mailing list by by Dmitry Isaikin.
1045 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1047 JH/02 Support "G" suffix to numbers in ${if comparisons.
1049 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1051 NM/01 Bugzilla 1197 - Spec typo
1052 Bugzilla 1196 - Spec examples corrections
1054 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
1056 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1057 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1058 function.
1060 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1061 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1063 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1064 "acl {{name}{arg}...}", and optional args on acl condition
1065 "acl = name arg..."
1067 JH/05 Permit multiple router/transport headers_add/remove lines.
1069 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1071 JH/07 Avoid using a waiting database for a single-message-only transport.
1072 Performance patch from Paul Fisher. Bugzilla 1262.
1074 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1075 Bugzilla 884.
1077 JH/09 Add $headers_added variable, with content from use of ACL modifier
1078 add_header (but not yet added to the message). Bugzilla 199.
1080 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1081 Pulled from Bugzilla 817 by Wolfgang Breyha.
1083 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1084 CVE-2012-5671
1085 (nb: this is the same fix as in Exim 4.80.1)
1087 JH/11 Add A= logging on delivery lines, and a client_set_id option on
1088 authenticators.
1090 JH/12 Add optional authenticated_sender logging to A= and a log_selector
1091 for control.
1093 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1095 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1096 advertise SMTP AUTH mechanism to us, instead of a generic
1097 protocol violation error. Also, make Exim more robust to bad
1098 data from the Dovecot auth socket.
1100 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1102 When a queue runner is handling a message, Exim first routes the
1103 recipient addresses, during which it prunes them based on the retry
1104 hints database. After that it attempts to deliver the message to
1105 any remaining recipients. It then updates the hints database using
1106 the retry rules.
1108 So if a recipient address works intermittently, it can get repeatedly
1109 deferred at routing time. The retry hints record remains fresh so the
1110 address never reaches the final cutoff time.
1112 This is a fairly common occurrence when a user is bumping up against
1113 their storage quota. Exim had some logic in its local delivery code
1114 to deal with this. However it did not apply to per-recipient defers
1115 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1117 This change adds a proper retry rule check during routing so that the
1118 final cutoff time is checked against the message's age. We only do
1119 this check if there is an address retry record and there is not a
1120 domain retry record; this implies that previous attempts to handle
1121 the address had the retry_use_local_parts option turned on. We use
1122 this as an approximation for the destination being like a local
1123 delivery, as in LMTP.
1125 I suspect this new check makes the old local delivery cutoff check
1126 redundant, but I have not verified this so I left the code in place.
1128 TF/02 Correct gecos expansion when From: is a prefix of the username.
1130 Test 0254 submits a message to Exim with the header
1132 Resent-From: f
1134 When I ran the test suite under the user fanf2, Exim expanded
1135 the header to contain my full name, whereas it should have added
1136 a Resent-Sender: header. It erroneously treats any prefix of the
1137 username as equal to the username.
1139 This change corrects that bug.
1141 GF/01 DCC debug and logging tidyup
1142 Error conditions log to paniclog rather than rejectlog.
1143 Debug lines prefixed by "DCC: " to remove any ambiguity.
1145 TF/03 Avoid unnecessary rebuilds of lookup-related code.
1147 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1148 Bug spotted by Jeremy Harris; was flawed since initial commit.
1149 Would have resulted in OCSP responses post-SNI triggering an Exim
1150 NULL dereference and crash.
1152 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1154 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1155 Bug detection, analysis and fix by Samuel Thibault.
1156 Bugzilla 1331, Debian bug #698092.
1158 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1160 JH/14 SMTP PRDR (
1161 Server implementation by Todd Lyons, client by JH.
1162 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1163 config variable "prdr_enable" controls whether the server
1164 advertises the facility. If the client requests PRDR a new
1165 acl_data_smtp_prdr ACL is called once for each recipient, after
1166 the body content is received and before the acl_smtp_data ACL.
1167 The client is controlled by both of: a hosts_try_prdr option
1168 on the smtp transport, and the server advertisement.
1169 Default client logging of deliveries and rejections involving
1170 PRDR are flagged with the string "PRDR".
1172 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1173 fclose(). Diagnosis by Todd Lyons.
1175 PP/17 Update configure.default to handle IPv6 localhost better.
1176 Patch by Alain Williams (plus minor tweaks).
1177 Bugzilla 880.
1179 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1180 This is now consistent with GnuTLS, and is now documented: the
1181 previous undocumented portable approach to treating the option as
1182 unset was to force an expansion failure. That still works, and
1183 an empty string is now equivalent.
1185 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1186 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1187 not performing validation itself.
1189 PP/20 Added force_command boolean option to pipe transport.
1190 Patch from Nick Koston, of cPanel Inc.
1192 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1193 Bugzilla 321, 823.
1195 TF/04 Added udpsend ACL modifier and hexquote expansion operator
1197 PP/21 Fix eximon continuous updating with timestamped log-files.
1198 Broken in a format-string cleanup in 4.80, missed when I repaired the
1199 other false fix of the same issue.
1200 Report and fix from Heiko Schlichting.
1201 Bugzilla 1363.
1203 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1204 Report from Prashanth Katuri.
1206 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1207 It's SecureTransport, so affects any MacOS clients which use the
1208 system-integrated TLS libraries, including email clients.
1210 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1211 using a MIME ACL for non-SMTP local injection.
1212 Report and assistance in diagnosis by Warren Baker.
1214 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1216 JH/16 Fix comparisons for 64b. Bugzilla 1385.
1218 TL/09 Add expansion variable $authenticated_fail_id to keep track of
1219 last id that failed so it may be referenced in subsequent ACL's.
1221 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1222 Alexander Miroch.
1224 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1225 ldap library initialization, allowing self-signed CA's to be
1226 used. Also properly sets require_cert option later in code by
1227 using NULL (global ldap config) instead of ldap handle (per
1228 session). Bug diagnosis and testing by alxgomz.
1230 TL/12 Enhanced documentation in the script provided in
1231 the src/util/ subdirectory.
1233 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1234 renamed to Transport Post Delivery Action by Jeremy Harris, as
1237 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1238 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1239 redis_servers = needs to be configured which will be used by the redis
1240 lookup. Patch from Warren Baker, of The Packet Hub.
1242 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1244 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1245 hostname or reverse DNS when processing a host list. Used suggestions
1246 from multiple comments on this bug.
1248 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1250 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1251 Missed a few lines, added it to make the runtest require no keyboard
1252 interaction.
1254 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1255 contains upper case chars. Make router use caseful_local_part.
1257 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1258 support when GnuTLS has been built with p11-kit.
1261 Exim version 4.80.1
1262 -------------------
1264 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1265 CVE-2012-5671
1266 This, or similar/improved, will also be change PP/11 of 4.82.
1269 Exim version 4.80
1270 -----------------
1272 PP/01 Handle short writes when writing local log-files.
1273 In practice, only affects FreeBSD (8 onwards).
1274 Bugzilla 1053, with thanks to Dmitry Isaikin.
1276 NM/01 Bugzilla 949 - Documentation tweak
1278 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1279 improved.
1281 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1283 PP/02 Implemented gsasl authenticator.
1285 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1287 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1288 `pkg-config foo` for cflags/libs.
1290 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1291 with rest of GSASL and with heimdal_gssapi.
1293 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1294 `pkg-config foo` for cflags/libs for the TLS implementation.
1296 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
1297 properties get this fed in as external SSF. A number of robustness
1298 and debugging improvements to the cyrus_sasl authenticator.
1300 PP/08 cyrus_sasl server now expands the server_realm option.
1302 PP/09 Bugzilla 1214 - Log authentication information in reject log.
1303 Patch by Jeremy Harris.
1305 PP/10 Added dbmjz lookup type.
1307 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
1309 PP/12 MAIL args handles TAB as well as SP, for better interop with
1310 non-compliant senders.
1311 Analysis and variant patch by Todd Lyons.
1313 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
1314 Bug report from Lars Müller <> (via SUSE),
1315 Patch from Dirk Mueller <>
1317 PP/13 tls_peerdn now print-escaped for spool files.
1318 Observed some $tls_peerdn in wild which contained \n, which resulted
1319 in spool file corruption.
1321 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1322 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1323 or write after TLS renegotiation, which otherwise led to messages
1324 "Got SSL error 2".
1326 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1327 as a tracking header (ie: a signed header comes before the signature).
1328 Patch from Wolfgang Breyha.
1330 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1331 comma-sep list; embedded commas doubled.
1333 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1335 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1336 diagnostics.
1337 Report and patch from Dmitry Banschikov.
1339 PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
1340 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1341 failures. We appear to now support TLS1.1+ with Exim.
1343 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1344 lets Exim select keys and certificates based upon TLS SNI from client.
1345 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1346 before an outbound SMTP session. New log_selector, +tls_sni.
1348 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1349 NULL dereference. Report and patch from Alun Jones.
1351 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1352 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1353 Not seeing resolver debug output on NetBSD, but suspect this is a
1354 resolver implementation change.
1356 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1357 Left warnings. Added "eximon gdb" invocation mode.
1359 PP/21 Defaulting "accept_8bitmime" to true, not false.
1361 PP/22 Added -bw for inetd wait mode support.
1363 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1364 locate the relevant includes and libraries. Made this the default.
1366 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1367 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1369 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
1370 This may cause build issues on older platforms.
1372 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1373 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1374 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1375 Added SNI support via GnuTLS too.
1376 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
1378 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
1380 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
1381 Applied second patch from Janne, implementing suggestion to default
1382 multiple-strings-in-record handling to match SPF spec.
1384 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
1386 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1387 read-only, out of scope).
1388 Patch from Wolfgang Breyha, report from Stuart Northfield.
1390 PP/29 Fix three issues highlighted by clang analyser static analysis.
1391 Only crash-plausible issue would require the Cambridge-specific
1392 iplookup router and a misconfiguration.
1393 Report from Marcin Mirosław.
1395 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1397 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1398 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1399 As part of this, removing so much warning spew let me fix some minor
1400 real issues in debug logging.
1402 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1403 assignment on my part. Fixed.
1405 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1406 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1407 Janne Snabb (who went above and beyond: thank you).
1409 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1410 string otherwise requires a connection and a bunch more work and it's
1411 relatively easy to get wrong. Should also expose TLS library linkage
1412 problems.
1414 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1415 64-bit ${eval} (JH/03).
1417 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
1418 GNU libc to support some of the 64-bit stuff, should not lead to
1419 conflicts. Defined before os.h is pulled in, so if a given platform
1420 needs to override this, it can.
1422 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1423 protection layer was required, which is not implemented.
1424 Bugzilla 1254, patch from Wolfgang Breyha.
1426 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1427 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1428 tls_dhparam take prime identifiers. Also unbreak combination of
1429 OpenSSL+DH_params+TLSSNI.
1431 PP/39 Disable SSLv2 by default in OpenSSL support.
1434 Exim version 4.77
1435 -----------------
1437 PP/01 Solaris build fix for Oracle's LDAP libraries.
1438 Bugzilla 1109, patch from Stephen Usher.
1440 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1442 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1443 whitespace trailer
1445 TF/02 Fix a couple more cases where we did not log the error message
1446 when unlink() failed. See also change 4.74-TF/03.
1448 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1449 lock up or crash if it happened to be inside a call to libc when it
1450 got a SIGUSR1 from exiwhat.
1452 The SIGUSR1 handler appends the current process status to the process
1453 log which is later printed by exiwhat. It used to use the general
1454 purpose logging code to do this, but several functions it calls are
1455 not safe for signals.
1457 The new output code in the SIGUSR1 handler is specific to the process
1458 log, and simple enough that it's easy to inspect for signal safety.
1459 Removing some special cases also simplifies the general logging code.
1460 Removing the spurious timestamps from the process log simplifies
1461 exiwhat.
1463 TF/04 Improved ratelimit ACL condition.
1465 The /noupdate option has been deprecated in favour of /readonly which
1466 has clearer semantics. The /leaky, /strict, and /readonly update modes
1467 are mutually exclusive. The update mode is no longer included in the
1468 database key; it just determines when the database is updated. (This
1469 means that when you upgrade Exim will forget old rate measurements.)
1471 Exim now checks that the per_* options are used with an update mode that
1472 makes sense for the current ACL. For example, when Exim is processing a
1473 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1474 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1475 must specify per_mail/readonly. If you omit the update mode it defaults to
1476 /leaky where that makes sense (as before) or /readonly where required.
1478 The /noupdate option is now undocumented but still supported for
1479 backwards compatibility. It is equivalent to /readonly except that in
1480 ACLs where /readonly is required you may specify /leaky/noupdate or
1481 /strict/noupdate which are treated the same as /readonly.
1483 A useful new feature is the /count= option. This is a generalization
1484 of the per_byte option, so that you can measure the throughput of other
1485 aggregate values. For example, the per_byte option is now equivalent
1486 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1488 The per_rcpt option has been generalized using the /count= mechanism
1489 (though it's more complicated than the per_byte equivalence). When it is
1490 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1491 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1492 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1493 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1494 Note that using per_rcpt with a non-readonly update mode in more than
1495 one ACL will cause the recipients to be double-counted. (The per_mail
1496 and per_byte options don't have this problem.)
1498 The handling of very low rates has changed slightly. If the computed rate
1499 is less than the event's count (usually one) then this event is the first
1500 after a long gap. In this case the rate is set to the same as this event's
1501 count, so that the first message of a spam run is counted properly.
1503 The major new feature is a mechanism for counting the rate of unique
1504 events. The new per_addr option counts the number of different
1505 recipients that someone has sent messages to in the last time period. It
1506 behaves like per_rcpt if all the recipient addresses are different, but
1507 duplicate recipient addresses do not increase the measured rate. Like
1508 the /count= option this is a general mechanism, so the per_addr option
1509 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1510 example, measure the rate that a client uses different sender addresses
1511 with the options per_mail/unique=$sender_address. There are further
1512 details in the main documentation.
1514 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1516 TF/06 Removed a few PCRE remnants.
1518 TF/07 Automatically extract Exim's version number from tags in the git
1519 repository when doing development or release builds.
1521 PP/02 Raise smtp_cmd_buffer_size to 16kB.
1522 Bugzilla 879. Patch from Paul Fisher.
1524 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1525 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1526 Bugzilla 97.
1528 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
1530 PP/05 Variable $av_failed, true if the AV scanner deferred.
1531 Bugzilla 1078. Patch from John Horne.
1533 PP/06 Stop make process more reliably on build failure.
1534 Bugzilla 1087. Patch from Heiko Schlittermann.
1536 PP/07 Make maildir_use_size_file an _expandable_ boolean.
1537 Bugzilla 1089. Patch from Heiko Schlittermann.
1539 PP/08 Handle ${run} returning more data than OS pipe buffer size.
1540 Bugzilla 1131. Patch from Holger Weiß.
1542 PP/09 Handle IPv6 addresses with SPF.
1543 Bugzilla 860. Patch from Wolfgang Breyha.
1545 PP/10 GnuTLS: support TLS 1.2 & 1.1.
1546 Bugzilla 1156.
1547 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1548 Bugzilla 1095.
1550 PP/11 match_* no longer expand right-hand-side by default.
1551 New compile-time build option, EXPAND_LISTMATCH_RHS.
1552 New expansion conditions, "inlist", "inlisti".
1554 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
1556 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
1558 PP/14 fix log_write() format string regression from TF/03.
1559 Bugzilla 1152. Patch from Dmitry Isaikin.
1562 Exim version 4.76
1563 -----------------
1565 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
1567 PP/02 Harmonised TLS library version reporting; only show if debugging.
1568 Layout now matches that introduced for other libraries in 4.74 PP/03.
1570 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
1572 PP/04 New "dns_use_edns0" global option.
1574 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
1575 Bugzilla 1098.
1577 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
1578 nb: Exim is not vulnerable to
1580 TK/01 Updated PolarSSL code to 0.14.2.
1581 Bugzilla 1097. Patch from Andreas Metzler.
1583 PP/07 Catch divide-by-zero in ${eval:...}.
1584 Fixes bugzilla 1102.
1586 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
1587 Bugzilla 1104.
1589 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
1590 format-string attack -- SECURITY: remote arbitrary code execution.
1592 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
1593 time unintentionally subject to list matching rules, letting the header
1594 cause arbitrary Exim lookups (of items which can occur in lists, *not*
1595 arbitrary string expansion). This allowed for information disclosure.
1597 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
1598 INT_MIN/-1 -- value coerced to INT_MAX.
1601 Exim version 4.75
1602 -----------------
1604 NM/01 Workaround for PCRE version dependency in version reporting
1605 Bugzilla 1073
1607 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
1608 This fixes portability to compilers other than gcc, notably
1609 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
1611 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
1612 makefiles for portability to HP-UX and POSIX correctness.
1614 PP/01 Permit LOOKUP_foo enabling on the make command-line.
1615 Also via indented variable definition in the Makefile.
1616 (Debugging by Oliver Heesakkers).
1618 PP/02 Restore caching of spamd results with expanded spamd_address.
1619 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
1621 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
1622 Improves build reliability. Fix from: Frank Elsner
1624 NM/02 Fix wide character breakage in the rfc2047 coding
1625 Fixes bug 1064. Patch from Andrey N. Oktyabrski
1627 NM/03 Allow underscore in dnslist lookups
1628 Fixes bug 1026. Patch from Graeme Fowler
1630 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
1631 Code patches from Adam Ciarcinski of NetBSD.
1633 NM/04 Fixed exiqgrep to cope with mailq missing size issue
1634 Fixes bug 943.
1636 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
1637 is logged, to avoid truncation. Patch from John Horne.
1639 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
1640 Patch from Jakob Hirsch.
1642 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
1643 SQL string expansion failure details.
1644 Patch from Andrey Oktyabrski.
1646 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
1647 Patch from Simon Arlott.
1649 PP/09 New lookups functionality failed to compile on old gcc which rejects
1650 extern declarations in function scope.
1651 Patch from Oliver Fleischmann
1653 PP/10 Use sig_atomic_t for flags set from signal handlers.
1654 Check getgroups() return and improve debugging.
1655 Fixed developed for diagnosis in bug 927 (which turned out to be
1656 a kernel bug).
1658 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
1659 Patch from Mark Zealey.
1661 PP/12 Bugzilla 1056: Improved spamd server selection.
1662 Patch from Mark Zealey.
1664 PP/13 Bugzilla 1086: Deal with maildir quota file races.
1665 Based on patch from Heiko Schlittermann.
1667 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
1668 Patch from Uwe Doering, sign-off by Michael Haardt.
1670 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
1671 variable declaration deep within a block. Bug and patch from
1672 Dennis Davis.
1674 PP/15 lookups-Makefile IRIX compatibility coercion.
1676 PP/16 Make DISABLE_DKIM build knob functional.
1678 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
1679 Patch by Simon Arlott
1681 TF/03 Fix valgrind.h portability to C89 compilers that do not support
1682 variable argument macros. Our copy now differs from upstream.
1685 Exim version 4.74
1686 -----------------
1688 TF/01 Failure to get a lock on a hints database can have serious
1689 consequences so log it to the panic log.
1691 TF/02 Log LMTP confirmation messages in the same way as SMTP,
1692 controlled using the smtp_confirmation log selector.
1694 TF/03 Include the error message when we fail to unlink a spool file.
1696 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
1697 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
1698 for maintaining out-of-tree patches for some time.
1700 PP/01 Bugzilla 139: Documentation and portability issues.
1701 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
1702 Handle per-OS dynamic-module compilation flags.
1704 PP/02 Let /dev/null have normal permissions.
1705 The 4.73 fixes were a little too stringent and complained about the
1706 permissions on /dev/null. Exempt it from some checks.
1707 Reported by Andreas M. Kirchwitz.
1709 PP/03 Report version information for many libraries, including
1710 Exim version information for dynamically loaded libraries. Created
1711 version.h, now support a version extension string for distributors
1712 who patch heavily. Dynamic module ABI change.
1714 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
1715 privilege escalation vulnerability whereby the Exim run-time user
1716 can cause root to append content of the attacker's choosing to
1717 arbitrary files.
1719 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
1720 (Wolfgang Breyha)
1722 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
1723 If dropping privileges for untrusted macros, we disabled normal logging
1724 on the basis that it would fail; for the Exim run-time user, this is not
1725 the case, and it resulted in successful deliveries going unlogged.
1726 Fixed. Reported by Andreas Metzler.
1729 Exim version 4.73
1730 -----------------
1732 PP/01 Date: & Message-Id: revert to normally being appended to a message,
1733 only prepend for the Resent-* case. Fixes regression introduced in
1734 Exim 4.70 by NM/22 for Bugzilla 607.
1736 PP/02 Include check_rfc2047_length in configure.default because we're seeing
1737 increasing numbers of administrators be bitten by this.
1739 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
1741 PP/03 Bugzilla 994: added openssl_options main configuration option.
1743 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
1745 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
1747 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
1749 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
1750 without a peer certificate, leading to a segfault because of an
1751 assumption that peers always have certificates. Be a little more
1752 paranoid. Problem reported by Martin Tscholak.
1754 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
1755 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
1756 NB: ClamAV planning to remove STREAM in "middle of 2010".
1757 CL also introduces -bmalware, various -d+acl logging additions and
1758 more caution in buffer sizes.
1760 PP/09 Implemented reverse_ip expansion operator.
1762 PP/10 Bugzilla 937: provide a "debug" ACL control.
1764 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
1766 PP/12 Bugzilla 973: Implement --version.
1768 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
1770 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
1772 PP/15 Bugzilla 816: support multiple condition rules on Routers.
1774 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
1775 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
1776 ignore trailing whitespace.
1778 JJ/02 prevent non-panic DKIM error from being sent to paniclog
1780 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
1781 "exim" to be used
1783 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
1784 Notification from Dr Andrew Aitchison.
1786 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
1787 ExtendedDetectionInfo response format.
1788 Notification from John Horne.
1790 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
1791 compatible.
1793 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
1794 XSL and documented dependency on system catalogs, with examples of how
1795 it normally works.
1797 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
1798 access.
1800 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
1801 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
1802 configuration file which is writeable by the Exim user or group.
1804 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
1805 of configuration files to cover files specified with the -C option if
1806 they are going to be used with root privileges, not just the default
1807 configuration file.
1809 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
1810 option (effectively making it always true).
1812 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
1813 files to be used while preserving root privileges.
1815 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
1816 that rogue child processes cannot use them.
1818 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
1819 run-time user, instead of root.
1821 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
1822 Exim run-time user without dropping privileges.
1824 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
1825 result string, instead of calling string_vformat() twice with the same
1826 arguments.
1829 for other users. Others should always drop root privileges if they use
1830 -C on the command line, even for a whitelisted configure file.
1834 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
1837 Exim version 4.72
1838 -----------------
1840 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
1841 $data_path, and $header_path variables; fixed documentation bugs and
1842 typos
1844 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
1845 exipick to access non-standard spools, including the "frozen" queue
1846 (Finput)
1848 NM/01 Bugzilla 965: Support mysql stored procedures.
1849 Patch from Alain Williams
1851 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
1853 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
1854 Patch from Andreas Metzler
1856 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
1857 Patch from Kirill Miazine
1859 NM/05 Bugzilla 671: Added umask to procmail example.
1861 JJ/03 installed exipick 20100323.0, fixing doc bug
1863 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
1864 directory. Notification and patch from Dan Rosenberg.
1866 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
1868 TK/02 Improve log output when DKIM signing operation fails.
1870 MH/01 Treat the transport option dkim_domain as a colon separated
1871 list, not as a single string, and sign the message with each element,
1872 omitting multiple occurences of the same signer.
1874 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
1875 Bugzilla 985, 986. Patch by Simon Arlott
1877 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
1878 Patch by Simon Arlott
1880 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
1881 MBX locking. Notification from Dan Rosenberg.
1884 Exim version 4.71
1885 -----------------
1887 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
1889 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
1891 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
1893 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
1895 NM/04 Bugzilla 915: Flag broken perl installation during build.
1898 Exim version 4.70
1899 -----------------
1901 TK/01 Added patch by Johannes Berg that expands the main option
1902 "spamd_address" if it starts with a dollar sign.
1904 TK/02 Write list of recipients to X-Envelope-Sender header when building
1905 the mbox-format spool file for content scanning (suggested by Jakob
1906 Hirsch).
1908 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
1909 ( support via dccifd. Activated by
1910 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
1912 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
1913 by Mark Daniel Reidel <>.
1915 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
1916 When building exim an external PCRE library is now needed -
1917 PCRE is a system library on the majority of modern systems.
1918 See entry on PCRE_LIBS in EDITME file.
1920 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
1921 conversation. Added nologin parameter to request.
1922 Patch contributed by Kirill Miazine.
1924 TF/01 Do not log submission mode rewrites if they do not change the address.
1926 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
1928 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
1929 log files in place. Contributed by Roberto Lima.
1931 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
1933 TF/03 Bugzilla 615: When checking the local_parts router precondition
1934 after a local_part_suffix or local_part_prefix option, Exim now
1935 does not use the address's named list lookup cache, since this
1936 contains cached lookups for the whole local part.
1938 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
1939 Robert Millan. Documentation is in experimental-spec.txt.
1941 TF/04 Bugzilla 668: Fix parallel build (make -j).
1943 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
1945 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
1946 Patch provided by Jan Srzednicki.
1948 TF/05 Leading white space used to be stripped from $spam_report which
1949 wrecked the formatting. Now it is preserved.
1951 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
1952 that they are available at delivery time.
1954 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
1956 TF/08 TLS error reporting now respects the incoming_interface and
1957 incoming_port log selectors.
1959 TF/09 Produce a more useful error message if an SMTP transport's hosts
1960 setting expands to an empty string.
1962 NM/06 Bugzilla 744: EXPN did not work under TLS.
1963 Patch provided by Phil Pennock.
1965 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
1966 Patch provided by Richard Godbee.
1968 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
1969 acl_smtp_notquit, added index entry.
1971 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
1972 Patch provided by Eugene Bujak.
1974 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
1975 accept(). Patch provided by Maxim Dounin.
1977 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
1978 Patch provided by Phil Pennock.
1980 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
1982 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
1983 Patch provided by Brad "anomie" Jorsch.
1985 NM/14 Bugzilla 622: Added timeout setting to transport filter.
1986 Patch provided by Dean Brooks.
1988 TK/05 Add native DKIM support (does not depend on external libraries).
1990 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
1991 Patch provided by Graeme Fowler.
1993 NM/16 Bugzilla 851: Documentation example syntax fix.
1995 NM/17 Changed NOTICE file to remove references to embedded PCRE.
1997 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
1998 lsearch.
2000 NM/19 Bugzilla 745: TLS version reporting.
2001 Patch provided by Phil Pennock.
2003 NM/20 Bugzilla 167: bool: condition support.
2004 Patch provided by Phil Pennock.
2006 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2007 clients. Patch provided by Phil Pennock.
2009 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2010 Patch provided by Brad "anomie" Jorsch.
2012 NM/23 Bugzilla 687: Fix misparses in eximstats.
2013 Patch provided by Heiko Schlittermann.
2015 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2016 Patch provided by Heiko Schlittermann.
2018 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
2019 plus update to original patch.
2021 NM/26 Bugzilla 799: Documentation correction for ratelimit.
2023 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2024 Patch provided by David Brownlee.
2026 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
2028 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
2030 NM/30 Bugzilla 888: TLS documentation bugfixes.
2032 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
2034 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
2035 Unlike the original bugzilla I have changed all shell scripts in src tree.
2037 NM/33 Bugzilla 898: Transport filter timeout fix.
2038 Patch by Todd Rinaldo.
2040 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
2041 Patch by Serge Demonchaux.
2043 NM/35 Bugzilla 39: Base64 decode bug fixes.
2044 Patch by Jakob Hirsch.
2046 NM/36 Bugzilla 909: Correct connect() call in dcc code.
2048 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
2050 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
2052 NM/39 Bugzilla 911: Fixed MakeLinks build script.
2055 Exim version 4.69
2056 -----------------
2058 TK/01 Add preliminary DKIM support. Currently requires a forked version of
2059 ALT-N's libdkim that I have put here:
2062 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2063 were called 'true' and it seems that C99 defines that as a reserved
2064 keyword to be used with 'bool' variable types. That means you could
2065 not include C99-style headers which use bools without triggering
2066 build errors in sieve.c.
2068 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2069 as mailq or other aliases. Changed the --help handling significantly
2070 to do whats expected. exim_usage() emits usage/help information.
2072 SC/01 Added the -bylocaldomain option to eximstats.
2074 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
2076 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
2078 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
2081 Exim version 4.68
2082 -----------------
2084 PH/01 Another patch from the Sieve maintainer.
2086 PH/02 When an IPv6 address is converted to a string for single-key lookup
2087 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2088 dots are used instead of colons so that keys in lsearch files need not
2089 contain colons. This was done some time before quoting was made available
2090 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2091 (notated using the quote facility) so as to distinguish them from IPv4
2092 keys. This meant that lookups for IP addresses in host lists did not work
2093 for iplsearch lookups.
2095 This has been fixed by arranging for IPv6 addresses to be expressed with
2096 colons if the lookup type is iplsearch. This is not incompatible, because
2097 previously such lookups could never work.
2099 The situation is now rather anomalous, since one *can* have colons in
2100 ordinary lsearch keys. However, making the change in all cases is
2101 incompatible and would probably break a number of configurations.
2103 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2104 version.
2106 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2107 conversion specification without a maximum field width, thereby enabling
2108 a rogue spamd server to cause a buffer overflow. While nobody in their
2109 right mind would setup Exim to query an untrusted spamd server, an
2110 attacker that gains access to a server running spamd could potentially
2111 exploit this vulnerability to run arbitrary code as the Exim user.
2113 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2114 $primary_hostname instead of what libspf2 thinks the hosts name is.
2116 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2117 a directory entry by the name of the lookup key. Previously, if a
2118 symlink pointed to a non-existing file or a file in a directory that
2119 Exim lacked permissions to read, a lookup for a key matching that
2120 symlink would fail. Now it is enough that a matching directory entry
2121 exists, symlink or not. (Bugzilla 503.)
2123 PH/03 The body_linecount and body_zerocount variables are now exported in the
2124 local_scan API.
2126 PH/04 Added the $dnslist_matched variable.
2128 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2129 This means they are set thereafter only if the connection becomes
2130 encrypted.
2132 PH/06 Added the client_condition to authenticators so that some can be skipped
2133 by clients under certain conditions.
2135 PH/07 The error message for a badly-placed control=no_multiline_responses left
2136 "_responses" off the end of the name.
2138 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2140 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2141 (without spaces) instead of just copying the configuration text.
2143 PH/10 Added the /noupdate option to the ratelimit ACL condition.
2145 PH/11 Added $max_received_linelength.
2147 PH/12 Added +ignore_defer and +include_defer to host lists.
2149 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2150 way in which PCRE > 7.0 is built.
2152 PH/14 Implemented queue_only_load_latch.
2154 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2155 MAIL command. The effect was to mangle the value on 64-bit systems.
2157 PH/16 Another patch from the Sieve maintainer.
2159 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2161 PH/18 If a system quota error occurred while trying to create the file for
2162 a maildir delivery, the message "Mailbox is full" was not appended to the
2163 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2164 only to a quota excession during the actual writing of the file.
2166 PH/19 It seems that peer DN values may contain newlines (and other non-printing
2167 characters?) which causes problems in log lines. The DN values are now
2168 passed through string_printing() before being added to log lines.
2170 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
2171 and InterBase are left for another time.)
2173 PH/21 Added message_body_newlines option.
2175 PH/22 Guard against possible overflow in moan_check_errorcopy().
2177 PH/23 POSIX allows open() to be a macro; guard against that.
2179 PH/24 If the recipient of an error message contained an @ in the local part
2180 (suitably quoted, of course), incorrect values were put in $domain and
2181 $local_part during the evaluation of errors_copy.
2184 Exim version 4.67
2185 -----------------
2187 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2188 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2189 Jan Srzednicki.
2191 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2192 issue a MAIL command.
2194 PH/02 In an ACL statement such as
2196 deny dnslists = X!= : X=
2198 if a client was not listed at all, or was listed with a value other than
2199, in the X list, but was listed with in the Y list,
2200 the condition was not true (as it should be), so access was not denied.
2201 The bug was that the ! inversion was incorrectly passed on to the second
2202 item. This has been fixed.
2204 PH/03 Added additional dnslists conditions == and =& which are different from
2205 = and & when the dns lookup returns more than one IP address.
2207 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2208 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2210 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2211 FSYNC, which compiles an option called disable_fsync that allows for
2212 bypassing fsync(). The documentation is heavily laced with warnings.
2214 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2216 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2217 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2218 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2219 including adding "make clean"; (3) Added -fPIC when compiling the test
2220 dynamically loaded module, to get rid of a warning.
2222 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2223 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2224 = 0s. The bug is otherwise harmless.
2226 PH/07 There was a bug in the dovecot authenticator such that the value of
2227 $auth1 could be overwritten, and so not correctly preserved, after a
2228 successful authentication. This usually meant that the value preserved by
2229 the server_setid option was incorrect.
2231 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2233 PH/09 Installed PCRE release 7.0.
2235 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2236 run for batched SMTP input. It is now run at the start of every message
2237 in the batch. While fixing this I discovered that the process information
2238 (output by running exiwhat) was not always getting set for -bs and -bS
2239 input. This is fixed, and it now also says "batched" for BSMTP.
2241 PH/11 Added control=no_pipelining.
2243 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2244 patch, slightly modified), and move the expansion of helo_data till after
2245 the connection is made in the smtp transport (so it can use these
2246 values).
2248 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2250 PH/14 Added log_selector = +pid.
2252 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2254 PH/16 Add ${if forany and ${if forall.
2256 PH/17 Added dsn_from option to vary the From: line in DSNs.
2258 PH/18 Flush SMTP output before performing a callout, unless control =
2259 no_callout_flush is set.
2261 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2262 was true (the default) a successful delivery failed to delete the retry
2263 item, thus causing premature timeout of the address. The bug is now
2264 fixed.
2266 PH/20 Added hosts_avoid_pipelining to the smtp transport.
2268 PH/21 Long custom messages for fakedefer and fakereject are now split up
2269 into multiline responses in the same way that messages for "deny" and
2270 other ACL rejections are.
2272 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2273 with slight modification.
2275 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2276 draft, changing the syntax and factoring some duplicate code".
2278 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2279 for deliveries of the second and subsequent messages over the same SMTP
2280 connection.
2282 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2283 ${reduce, with only minor "tidies".
2285 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2287 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2288 expansion side effects.
2290 PH/27 When a message times out after an over-quota error from an Exim-imposed
2291 quota, the bounce message says "mailbox is full". This message was not
2292 being given when it was a system quota that was exceeded. It now should
2293 be the same.
2295 MH/03 Made $recipients available in local_scan(). local_scan() already has
2296 better access to the recipient list through recipients_list[], but
2297 $recipients can be useful in postmaster-provided expansion strings.
2299 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2300 in the case of a MAIL command with additional options following the
2301 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2302 were accidentally chopped off.
2304 PH/29 SMTP synchronization checks are implemented when a command is read -
2305 there is a check that no more input is waiting when there shouldn't be
2306 any. However, for some commands, a delay in an ACL can mean that it is
2307 some time before the response is written. In this time, more input might
2308 arrive, invalidly. So now there are extra checks after an ACL has run for
2309 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2310 pipelining has not been advertised.
2312 PH/30 MH's patch to allow iscntrl() characters to be list separators.
2314 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2315 returned in the SMTP response when smtp_return_error_details was false.
2316 This has been fixed.
2318 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2319 instead of the C I/O that was originally supplied, because problems were
2320 reported on Solaris.
2322 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2323 Exim which did not show up earlier: it was assuming that a call to
2324 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2325 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2326 was a macro that became an assignment, so it seemed to work. This has
2327 changed to a proper function call with a void return, hence the compile
2328 error. Exim's code has been fixed.
2330 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2331 cpus.
2333 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2335 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2337 PH/37 If a message is not accepted after it has had an id assigned (e.g.
2338 because it turns out to be too big or there is a timeout) there is no
2339 "Completed" line in the log. When some messages of this type were
2340 selected by exigrep, they were listed as "not completed". Others were
2341 picked up by some special patterns. I have improved the selection
2342 criteria to be more general.
2344 PH/38 The host_find_failed option in the manualroute router can now be set
2345 to "ignore", to completely ignore a host whose IP address cannot be
2346 found. If all hosts are ignored, the behaviour is controlled by the new
2347 host_all_ignored option.
2349 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2350 homing or because of multiple MX records with /mx) generated more than
2351 one IP address, and the following item turned out to be the local host,
2352 all the secondary addresses of the first item were incorrectly removed
2353 from the list, along with the local host and any following hosts (which
2354 is what is supposed to happen).
2356 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2357 whoever called Exim into the -H file. In the case of the daemon it was
2358 behaving confusingly. When first started, it used values for whoever
2359 started the daemon, but after a SIGHUP it used the Exim user (because it
2360 calls itself on a restart). I have changed the code so that it now always
2361 uses the Exim user.
2363 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2364 message are rejected with the same error (e.g. no authentication or bad
2365 sender address), and a DATA command is nevertheless sent (as can happen
2366 with PIPELINING or a stupid MUA), the error message that was given to the
2367 RCPT commands is included in the rejection of the DATA command. This is
2368 intended to be helpful for MUAs that show only the final error to their
2369 users.
2371 PH/42 Another patch from the Sieve maintainer.
2373 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2374 Eximstats - Fixed some broken HTML links and added missing column headers
2375 (Jez Hancock).
2376 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2377 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2379 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2381 PH/43 Yet another patch from the Sieve maintainer.
2383 PH/44 I found a way to check for a TCP/IP connection going away before sending
2384 the response to the final '.' that terminates a message, but only in the
2385 case where the client has not sent further data following the '.'
2386 (unfortunately, this is allowed). However, in many cases there won't be
2387 any further data because there won't be any more messages to send. A call
2388 to select() can be used: if it shows that the input is "ready", there is
2389 either input waiting, or the socket has been closed. An attempt to read
2390 the next input character can distinguish the two cases. Previously, Exim
2391 would have sent an OK response which the client would never have see.
2392 This could lead to message repetition. This fix should cure that, at
2393 least in a lot of common cases.
2395 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2396 advertised in response to EHLO.
2399 Exim version 4.66
2400 -----------------
2402 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2403 fixed by 4.65/MH/01 (is this a record?) are fixed:
2405 (i) An empty string was always treated as zero by the numeric comparison
2406 operators. This behaviour has been restored.
2408 (ii) It is documented that the numeric comparison operators always treat
2409 their arguments as decimal numbers. This was broken in that numbers
2410 starting with 0 were being interpreted as octal.
2412 While fixing these problems I realized that there was another issue that
2413 hadn't been noticed. Values of message_size_limit (both the global option
2414 and the transport option) were treated as octal if they started with 0.
2415 The documentation was vague. These values are now always treated as
2416 decimal, and I will make that clear in the documentation.
2419 Exim version 4.65
2420 -----------------
2422 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2423 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2424 versions. (#438)
2426 MH/01 Don't check that the operands of numeric comparison operators are
2427 integers when their expansion is in "skipping" mode (fixes bug
2428 introduced by 4.64-PH/07).
2430 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2431 child addresses, Exim now panics and dies. Previously, because the count
2432 is held in a short int, deliveries were likely to be lost. As such a
2433 large number of recipients for a single message is ridiculous
2434 (performance will be very, very poor), I have chosen to impose a limit
2435 rather than extend the field.
2438 Exim version 4.64
2439 -----------------
2441 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2442 leftover -K file (the existence of which was triggered by #402).
2443 While we were at it, introduced process PID as part of the -K
2444 filename. This should rule out race conditions when creating
2445 these files.
2447 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2448 processing considerably. Previous code took too long for large mails,
2449 triggering a timeout which in turn triggers #401.
2451 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2452 in the DK code in transports.c. sendfile() is not really portable,
2453 hence the _LINUX specificness.
2455 TF/01 In the add_headers option to the mail command in an Exim filter,
2456 there was a bug that Exim would claim a syntax error in any
2457 header after the first one which had an odd number of characters
2458 in the field name.
2460 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2461 callout verification, Exim cached a "reject" for the entire domain. This
2462 is correct for most verifications, but it is not correct for a recipient
2463 verification with use_sender or use_postmaster set, because in that case
2464 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2465 case of MAIL FROM:<> rejection from other early rejections (e.g.
2466 rejection of HELO). When verifying a recipient using a non-null MAIL
2467 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2468 Whatever the result of the callout, the value of the domain cache is
2469 left unchanged (for any other kind of callout, getting as far as trying
2470 RCPT means that the domain itself is ok).
2472 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2473 gcc 4.1.1 threw up.
2475 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2476 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2477 session, the daemon ignores ECONNECT errors and logs others; it now
2478 ignores EPIPE as well.
2480 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2481 (quoted-printable decoding).
2483 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
2484 later the small subsequent patch to fix an introduced bug.
2486 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2488 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2490 PH/08 An error is now given if message_size_limit is specified negative.
2492 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
2493 to be given (somewhat) arbitrary names.
2495 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2496 in 4.64-PH/09.
2498 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2499 miscellaneous code fixes
2501 PH/10 Added the log_reject_target ACL modifier to specify where to log
2502 rejections.
2504 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2505 hostname. This is wrong, because it relates to the incoming message (and
2506 probably the interface on which it is arriving) and not to the outgoing
2507 callout (which could be using a different interface). This has been
2508 changed to use the value of the helo_data option from the smtp transport
2509 instead - this is what is used when a message is actually being sent. If
2510 there is no remote transport (possible with a router that sets up host
2511 addresses), $smtp_active_hostname is used.
2513 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
2514 tweaks were necessary in order to get it to work (see also 21 below):
2515 (a) The code assumed that strncpy() returns a negative number on buffer
2516 overflow, which isn't the case. Replaced with Exim's string_format()
2517 function.
2518 (b) There were several signed/unsigned issues. I just did the minimum
2519 hacking in of casts. There is scope for a larger refactoring.
2520 (c) The code used strcasecmp() which is not a standard C function.
2521 Replaced with Exim's strcmpic() function.
2522 (d) The code set only $1; it now sets $auth1 as well.
2523 (e) A simple test gave the error "authentication client didn't specify
2524 service in request". It would seem that Dovecot has changed its
2525 interface. Fortunately there's a specification; I followed it and
2526 changed what the client sends and it appears to be working now.
2528 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
2529 decoding.
2531 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
2532 address A is aliased to B and C, where B exists and C does not. Without
2533 -v the output is "A verified" because verification stops after a
2534 successful redirection if more than one address is generated. However,
2535 with -v the child addresses are also verified. Exim was outputting "A
2536 failed to verify" and then showing the successful verification for C,
2537 with its parentage. It now outputs "B failed to verify", showing B's
2538 parentage before showing the successful verification of C.
2540 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
2541 look up a TXT record in a specific list after matching in a combined
2542 list.
2544 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2545 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2546 they consult the DNS. I had assumed they would set it the way they
2547 wanted; and indeed my experiments on Linux seem to show that in some
2548 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2549 To be on the safe side, however, I have now made the interface to
2550 host_find_byname() similar to host_find_bydns(), with an argument
2551 containing the DNS resolver options. The host_find_byname() function now
2552 sets these options at its start, just as host_find_bydns() does. The smtp
2553 transport options dns_qualify_single and dns_search_parents are passed to
2554 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
2555 of host_find_byname() use the default settings of RES_DEFNAMES
2556 (qualify_single) but not RES_DNSRCH (search_parents).
2558 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
2559 spool_read_header() do less string testing, by means of a preliminary
2560 switch on the second character of optional "-foo" lines. (This is
2561 overdue, caused by the large number of possibilities that now exist.
2562 Originally there were few.) While I was there, I also converted the
2563 str(n)cmp tests so they don't re-test the leading "-" and the first
2564 character, in the hope this might squeeze out yet more improvement.
2566 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
2567 flag allowing group syntax was set by the header_syntax check but not
2568 turned off, possible causing trouble later; (2) The flag was not being
2569 set at all for the header_verify test, causing "group"-style headers to
2570 be rejected. I have now set it in this case, and also caused header_
2571 verify to ignore an empty address taken from a group. While doing this, I
2572 came across some other cases where the code for allowing group syntax
2573 while scanning a header line wasn't quite right (mostly, not resetting
2574 the flag correctly in the right place). These bugs could have caused
2575 trouble for malformed header lines. I hope it is now all correct.
2577 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
2578 with the "reply" argument non-NULL. The code, however (which originally
2579 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
2580 but it didn't always do it. This confused somebody who was copying the
2581 code for some other use. I have removed all the tests.
2583 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
2584 feature that was used to support insecure browsers during the U.S. crypto
2585 embargo. It requires special client support, and Exim is probably the
2586 only MTA that supported it -- and would never use it because real RSA is
2587 always available. This code has been removed, because it had the bad
2588 effect of slowing Exim down by computing (never used) parameters for the
2589 RSA_EXPORT functionality.
2591 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
2592 authenticator to fail if there's a tab character in the incoming data
2593 (there should never be unless someone is messing about, as it's supposed
2594 to be base64-encoded). Also added, on Timo's advice, the "secured" option
2595 if the connection is using TLS or if the remote IP is the same as the
2596 local IP, and the "valid-client-cert option" if a client certificate has
2597 been verified.
2599 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
2600 authenticators. This can be used for authorization after authentication
2601 succeeds. (In the case of plaintext, it servers for both authentication
2602 and authorization.)
2604 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
2605 if any retry times were supplied.
2607 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
2608 connection, where there is no client IP address to check. In this
2609 situation, the verify now always succeeds.
2611 PH/25 Applied John Jetmore's -Mset patch.
2613 PH/26 Added -bem to be like -Mset, but loading a message from a file.
2615 PH/27 In a string expansion for a processed (not raw) header when multiple
2616 headers of the same name were present, leading whitespace was being
2617 removed from all of them, but trailing whitespace was being removed only
2618 from the last one. Now trailing whitespace is removed from each header
2619 before concatenation. Completely empty headers in a concatenation (as
2620 before) are ignored.
2622 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
2623 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
2625 PH/29 [Removed. This was a change that I later backed out, and forgot to
2626 correct the ChangeLog entry (that I had efficiently created) before
2627 committing the later change.]
2629 PH/30 Exim was sometimes attempting to deliver messages that had suffered
2630 address errors (4xx response to RCPT) over the same connection as other
2631 messages routed to the same hosts. Such deliveries are always "forced",
2632 so retry times are not inspected. This resulted in far too many retries
2633 for the affected addresses. The effect occurred only when there were more
2634 hosts than the hosts_max_try setting in the smtp transport when it had
2635 the 4xx errors. Those hosts that it had tried were not added to the list
2636 of hosts for which the message was waiting, so if all were tried, there
2637 was no problem. Two fixes have been applied:
2639 (i) If there are any address or message errors in an SMTP delivery, none
2640 of the hosts (tried or untried) are now added to the list of hosts
2641 for which the message is waiting, so the message should not be a
2642 candidate for sending over the same connection that was used for a
2643 successful delivery of some other message. This seems entirely
2644 reasonable: after all the message is NOT "waiting for some host".
2645 This is so "obvious" that I'm not sure why it wasn't done
2646 previously. Hope I haven't missed anything, but it can't do any
2647 harm, as the worst effect is to miss an optimization.
2649 (ii) If, despite (i), such a delivery is accidentally attempted, the
2650 routing retry time is respected, so at least it doesn't keep
2651 hammering the server.
2653 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
2654 in ${readsocket because some servers need this prod.
2656 PH/32 Added some extra debug output when updating a wait-xxx database.
2658 PH/33 The hint "could be header name not terminated by colon", which has been
2659 given for certain expansion errors for a long time, was not being given
2660 for the ${if def:h_colon_omitted{... case.
2662 PH/34 The spec says: "With one important exception, whenever a domain list is
2663 being scanned, $domain contains the subject domain." There was at least
2664 one case where this was not true.
2666 PH/35 The error "getsockname() failed: connection reset by peer" was being
2667 written to the panic log as well as the main log, but it isn't really
2668 panic-worthy as it just means the connection died rather early on. I have
2669 removed the panic log writing for the ECONNRESET error when getsockname()
2670 fails.
2672 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
2673 runs only) independently of the message's sender address. This meant
2674 that, if the 4xx error was in fact related to the sender, a different
2675 message to the same recipient with a different sender could confuse
2676 things. In particular, this can happen when sending to a greylisting
2677 server, but other circumstances could also provoke similar problems.
2678 I have changed the default so that the retry time for these errors is now
2679 based a combination of the sender and recipient addresses. This change
2680 can be overridden by setting address_retry_include_sender=false in the
2681 smtp transport.
2683 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
2684 remote server are returned as part of bounce messages. This was not
2685 happening for LMTP over a pipe (the lmtp transport), but now it is the
2686 same for both kinds of LMTP.
2688 PH/38 Despite being documented as not happening, Exim was rewriting addresses
2689 in header lines that were in fact CNAMEs. This is no longer the case.
2691 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
2692 and queue runs started by the daemon processed all messages. This has
2693 been fixed so that -R and -S can now usefully be given with -q<time>.
2695 PH/40 Import PCRE release 6.7 (fixes some bugs).
2697 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
2699 PH/42 Give an error if -q is specified more than once.
2701 PH/43 Renamed the variables $interface_address and $interface_port as
2702 $received_ip_address and $received_port, to make it clear that these
2703 values apply to message reception, and not to the outgoing interface when
2704 a message is delivered. (The old names remain recognized, of course.)
2706 PH/44 There was no timeout on the connect() call when using a Unix domain
2707 socket in the ${readsocket expansion. There now is.
2709 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
2710 be meaningful with "accept".
2712 SC/01 Eximstats V1.43
2713 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
2715 SC/02 Eximstats V1.44
2716 Use a glob alias rather than an array ref in the generated
2717 parser. This improves both readability and performance.
2719 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
2720 Collect SpamAssassin and rejection statistics.
2721 Don't display local sender or destination tables unless
2722 there is data to show.
2723 Added average volumes into the top table text output.
2725 SC/04 Eximstats V1.46
2726 Collect data on the number of addresses (recipients)
2727 as well as the number of messages.
2729 SC/05 Eximstats V1.47
2730 Added 'Message too big' to the list of mail rejection
2731 reasons (thanks to Marco Gaiarin).
2733 SC/06 Eximstats V1.48
2734 Mainlog lines which have GMT offsets and are too short to
2735 have a flag are now skipped.
2737 SC/07 Eximstats V1.49 (Alain Williams)
2738 Added the -emptyok flag.
2740 SC/08 Eximstats V1.50
2741 Fixes for obtaining the IP address from reject messages.
2743 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
2744 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
2745 whitespace changes from 4.64-PH/27
2747 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
2748 match 4.64-PH/13
2750 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
2751 are found, allow negative numbers in numeric criteria)
2753 JJ/06 exipick.20061117.2, added new $message_body_missing variable
2755 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
2756 to match changes made in 4.64-PH/43
2758 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
2760 PH/47 Put in an explicit test for a DNS lookup of an address record where the
2761 "domain" is actually an IP address, and force a failure. This locks out
2762 those revolvers/nameservers that support "A-for-A" lookups, in
2763 contravention of the specifications.
2765 PH/48 When a host name was looked up from an IP address, and the subsequent
2766 forward lookup of the name timed out, the host name was left in
2767 $sender_host_name, contrary to the specification.
2769 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
2770 restricted to single-key lookups, Exim was not diagnosing an error if
2771 * or *@ was used with a query-style lookup.
2773 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
2775 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
2776 long ago, but noone interested enough thought of it. Let's just say that
2777 the "1.1" means that there are some new functions that weren't there at
2778 some point in the past.
2780 PH/51 Error processing for expansion failure of helo_data from an smtp
2781 transport during callout processing was broken.
2783 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
2784 tested/used via the -bh/-bhc/-bs options.
2786 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
2787 bug, fixed in subsequent PCRE releases).
2789 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
2790 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
2792 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
2795 Exim version 4.63
2796 -----------------
2798 SC/01 Use a glob alias rather than an array ref in eximstats generated
2799 parser. This improves both readability and performance.
2801 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
2802 Don't display local sender or destination tables in eximstats unless
2803 there is data to show.
2804 Added average volumes into the eximstats top table text output.
2806 SC/03 Collect data on the number of addresses (recipients) as well
2807 as the number of messages in eximstats.
2809 TF/01 Correct an error in the documentation for the redirect router. Exim
2810 does (usually) call initgroups() when daemonizing.
2812 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
2813 with consistent privilege compared to when running as a daemon.
2815 TF/03 Note in the spec that $authenticated_id is not set for local
2816 submissions from trusted users.
2818 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
2819 Thanks to Dean Brooks <> for the patch.
2821 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
2822 by adding some example configuration directives to the default
2823 configuration file. A little bit of work is required to uncomment the
2824 directives and define how usernames and passwords are checked, but
2825 there is now a framework to start from.
2827 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
2828 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
2829 without this. I don't know how relevant this is to other LDAP libraries.
2831 PH/02 Add the verb name to the "unknown ACL verb" error.
2833 PH/03 Magnus Holmgren's patch for filter_prepend_home.
2835 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
2837 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
2838 directory not expanded when it should be if an expanded home directory
2839 was set for the address (which is overridden by the transport).
2841 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
2842 libradius.
2844 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
2845 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
2846 because it is too late at that time, and has no effect.
2848 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
2849 security issue with \' (bugzilla #107). I could not use the
2850 PQescapeStringConn() function, because it needs a PGconn value as one of
2851 its arguments.
2853 PH/08 When testing addresses using -bt, indicate those final addresses that
2854 are duplicates that would not cause an additional delivery. At least one
2855 person was confused, thinking that -bt output corresponded to deliveries.
2856 (Suppressing duplicates isn't a good idea as you lose the information
2857 about possibly different redirections that led to the duplicates.)
2859 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
2860 systems where poll() doesn't work, in particular OS X.
2862 PH/10 Added more information to debugging output for retry time not reached.
2864 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
2865 operations in malware.c.
2867 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
2868 signatures.
2870 PH/13 If write_rejectlog was set false when logging was sent to syslog with
2871 syslog_duplication set false, log lines that would normally be written
2872 both the the main log and to the reject log were not written to syslog at
2873 all.
2875 PH/14 In the default configuration, change the use of "message" in ACL warn
2876 statements to "add_header".
2878 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
2879 not followed by a command (e.g. "seen endif").
2881 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
2882 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
2883 latter.
2885 PH/17 Added extra conditions to the default value of delay_warning_condition
2886 so that it is now:
2888 ${if or { \
2889 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
2890 { match{$h_precedence:}{(?i)bulk|list|junk} } \
2891 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
2892 }{no}{yes}}
2894 The Auto-Submitted: and various List- headers are standardised, whereas I
2895 don't think Precedence: ever was.
2897 PH/18 Refactored debugging code in route_finduser() to show more information,
2898 in particular, the error code if getpwnam() issues one.
2900 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
2901 This is apparently needed in addition to the PH/07 change above to avoid
2902 any possible encoding problems.
2904 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
2905 but not after initializing Perl.
2907 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
2908 output them only if debugging. By default they are written stderr,
2909 apparently, which is not desirable.
2911 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
2912 queries.
2914 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
2915 --not options
2917 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
2919 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
2920 authenticated or an ident call has been made. Suppress the default
2921 values for $authenticated_id and $authenticated_sender (but permit -oMai
2922 and -oMas) when testing with -bh.
2924 PH/24 Re-jigged the order of the tests in the default configuration so that the
2925 tests for valid domains and recipients precede the DNS black list and CSA
2926 tests, on the grounds that those ones are more expensive.
2928 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
2929 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
2930 This bug exists in every version of Exim that I still have, right back to
2931 0.12.
2933 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
2934 However, an attempt to turn on case-sensitivity in a regex key by
2935 including (?-i) didn't work because the subject string was already
2936 lowercased, and the effects were non-intuitive. It turns out that a
2937 one-line patch can be used to allow (?-i) to work as expected.
2940 Exim version 4.62
2941 -----------------
2943 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
2944 other effects) broke the use of negated acl sub-conditions.
2946 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
2947 patch).
2949 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
2950 "Deny" causes Exim to reject the incoming connection with a 554 error.
2951 Unfortunately, if there is a major crisis, such as a disk failure,
2952 tcp-wrappers gives "deny", whereas what one would like would be some
2953 kind of temporary error. A kludge has been added to help with this.
2954 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
2955 554 error is used if errno is still zero or contains ENOENT (which occurs
2956 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
2957 451 error is used.
2959 PH/03 Add -lutil to the default FreeBSD LIBS setting.
2961 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
2962 errors. Otherwise a message that provokes a temporary error (when other
2963 messages do not) can cause a whole host to time out.
2965 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
2966 addresses were routed directly to files or pipes from a redirect router.
2967 File deliveries just didn't batch; pipe deliveries might have suffered
2968 odd errors.
2970 PH/06 A failure to get a lock for a hints database would erroneously always say
2971 "Failed to get write lock", even when it was really a read lock.
2973 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
2974 of 0600. This has been changed to use the value of the lockfile_mode
2975 option (which defaults to 0600).
2977 PH/08 Applied small patch from the Sieve maintainer.
2979 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
2980 folder from quota calculations, a direct delivery into this folder messed
2981 up the contents of the maildirsize file. This was because the regex was
2982 used only to exclude .Trash (or whatever) when the size of the mailbox
2983 was calculated. There was no check that a delivery was happening into an
2984 excluded directory. This bug has been fixed by ignoring all quota
2985 processing for deliveries into excluded directories.
2987 PH/10 Added the maildirfolder_create_regex option to appendfile.
2990 Exim version 4.61
2991 -----------------
2993 PH/01 The code for finding all the local interface addresses on a FreeBSD
2994 system running IPv6 was broken. This may well have applied to all BSD
2995 systems, as well as to others that have similar system calls. The broken
2996 code found IPv4 interfaces correctly, but gave incorrect values for the
2997 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
2998 that it would not match correctly against @[] and not recognize the IPv6
2999 addresses as local.
3001 PH/02 The ipliteral router was not recognizing addresses of the form user@
3002 [ipv6:....] because it didn't know about the "ipv6:" prefix.
3004 PH/03 Added disable_ipv6.
3006 PH/04 Changed $reply_address to use the raw form of the headers instead of the
3007 decoded form, because it is most often used to construct To: headers
3008 lines in autoreplies, and the decoded form may well be syntactically
3009 invalid. However, $reply_address has leading white space removed, and all
3010 newlines turned into spaces so that the autoreply transport does not
3011 grumble.
3013 PH/05 If group was specified without a user on a router, and no group or user
3014 was specified on a transport, the group from the router was ignored.
3016 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
3017 for visible compile-time settings that can be used to change these
3018 numbers, for those that want even more. Backwards compatibility with old
3019 spool files has been maintained. However, going back to a previous Exim
3020 release will lost any variables that are in spool files.
3022 PH/07 Two small changes when running in the test harness: increase delay when
3023 passing a TCP/IP connection to a new process, in case the original
3024 process has to generate a bounce, and remove special handling of
3025 (sic), which is no longer necessary.
3027 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
3028 be the same on different OS.
3030 PH/09 Moved a debug statement in filter processing to avoid a race problem when
3031 testing.
3033 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
3034 whether --show-vars was specified or not
3036 JJ/02 exipick: Added support for new ACL variable spool format introduced
3037 in 4.61-PH/06
3039 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
3040 syntactically invalid From: or Reply-to: line, and a filter used this to
3041 generate an autoreply, and therefore failed to obtain an address for the
3042 autoreply, Exim could try to deliver to a non-existent relative file
3043 name, causing unrelated and misleading errors. What now happens is that
3044 it logs this as a hard delivery error, but does not attempt to create a
3045 bounce message.
3047 PH/11 The exinext utility has a -C option for testing purposes, but although
3048 the given file was scanned by exinext itself; it wasn't being passed on
3049 when Exim was called.
3051 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
3052 an end-of-file indication when reading a command response.
3054 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
3055 compiled. In many other places in Exim, IPv6 addresses are always
3056 recognized, so I have changed this. It also means that IPv4 domain
3057 literals of the form [IPV4:n.n.n.n] are now always recognized.
3059 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
3060 used if the router is not running as root, for example, when verifying at
3061 ACL time, or when using -bh. The debugging output from this situation was
3062 non-existent - all you got was a failure to exec. I have made two
3063 changes:
3065 (a) Failures to set uid/gid, the current directory, or a process leader
3066 in a subprocess such as that created by queryprogram now generate
3067 suitable debugging output when -d is set.
3069 (b) The queryprogram router detects when it is not running as root,
3070 outputs suitable debugging information if -d is set, and then runs
3071 the subprocess without attempting to change uid/gid.
3073 PH/15 Minor change to Makefile for building test_host (undocumented testing
3074 feature).
3076 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
3077 additional section of a DNS packet that returns MX or SRV records.
3078 Instead, it always explicitly searches for A/AAAA records. This avoids
3079 major problems that occur when a DNS server includes only records of one
3080 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
3081 fixed another bug: if SRV records were looked up and the corresponding
3082 address records were *not* found in the additional section, the port
3083 values from the SRV records were lost.
3085 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
3086 using the correct key (the original address) when searching the retry
3087 rules in order to find which one to use for generating the retry hint.
3089 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
3090 adding the default one. Similarly, if it contains a Reply-To: header, the
3091 errors_reply_to option, if set, is not used.
3093 PH/19 When calculating a retry time, Exim used to measure the "time since
3094 failure" by looking at the "first failed" field in the retry record. Now
3095 it does not use this if it is later than than the arrival time of the
3096 message. Instead it uses the arrival time. This makes for better
3097 behaviour in cases where some deliveries succeed, thus re-setting the
3098 "first failed" field. An example is a quota failure for a huge message
3099 when small messages continue to be delivered. Without this change, the
3100 "time since failure" will always be short, possible causing more frequent
3101 delivery attempts for the huge message than are intended.
3102 [Note: This change was subsequently modified - see PH/04 for 4.62.]
3104 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
3105 $1, $2, $3) because the numerical variables can be reset during some
3106 expansion items (e.g. "match"), thereby losing the authentication data.
3108 PH/21 Make -bV show the size of off_t variables so that the test suite can
3109 decide whether to run tests for quotas > 2G.
3111 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
3112 mailbox_size, and mailbox_filecount in the appendfile transport. If a
3113 filecount value is greater than 2G or if a quota value is greater than 2G
3114 on a system where the size of off_t is not greater than 4, a panic error
3115 is given.
3117 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
3118 never match. The debug and -bh output now contains an explicit error
3119 message indicating a malformed IPv4 address or mask.
3121 PH/24 An host item such as was being treated as the IP address
3122 without a mask. Now it is not recognized as an IP address, and
3123 PH/23 above applies.
3125 PH/25 Do not write to syslog when running in the test harness. The only
3126 occasion when this arises is a failure to open the main or panic logs
3127 (for which there is an explicit test).
3129 PH/26 Added the /no_tell option to "control=freeze".
3131 PH/27 If a host name lookup failed very early in a connection, for example, if
3132 the IP address matched host_lookup and the reverse lookup yielded a name
3133 that did not have a forward lookup, an error message of the form "no IP
3134 address found for host (during SMTP connection from NULL)"
3135 could be logged. Now it outputs the IP address instead of "NULL".
3137 PH/28 An enabling patch from MH: add new function child_open_exim2() which
3138 allows the sender and the authenticated sender to be set when
3139 submitting a message from within Exim. Since child_open_exim() is
3140 documented for local_scan(), the new function should be too.
3142 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
3143 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
3144 results in an empty string is now treated as unset.
3146 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
3148 PH/31 Added sender_verify_fail logging option.
3150 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
3151 needed by RFC 822 but not by RFC 2822 was commented out. I have now
3152 tidied the source and removed it altogether.
3154 PH/33 When a queue run was abandoned because the load average was too high, a
3155 log line was always written; now it is written only if the queue_run log
3156 selector is set. In addition, the log line for abandonment now contains
3157 information about the queue run such as the pid. This is always present
3158 in "start" and "stop" lines but was omitted from the "abandon" line.
3160 PH/34 Omit spaces between a header name and the colon in the error message that
3161 is given when verify = headers_syntax fails (if there are lots of them,
3162 the message gets confusing).
3164 PH/35 Change the default for dns_check_names_pattern to allow slashes within
3165 names, as there are now some PTR records that contain slashes. This check
3166 is only to protect against broken name servers that fall over on strange
3167 characters, so the fact that it applies to all lookups doesn't matter.
3169 PH/36 Now that the new test suite is complete, we can remove some of the
3170 special code in Exim that was needed for the old test suite. For example,
3171 sorting DNS records because real resolvers return them in an arbitrary
3172 order. The new test suite's fake resolver always returns records in the
3173 same order.
3175 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
3176 bounces) except when queue_only is set, to avoid logging races between
3177 the different processes.
3179 PH/38 Panic-die if .include specifies a non-absolute path.
3181 PH/39 A tweak to the "H" retry rule from its user.
3183 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
3184 a label. They prevented compilation on older perls.
3186 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
3187 a warning to be raised on newish perls.
3189 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
3190 on queue. Changes to match documented behaviour of showing count of
3191 messages matching specified criteria.
3193 PH/40 Changed the default ident timeout from 30s to 5s.
3195 PH/41 Added support for the use of login_cap features, on those BSD systems
3196 that have them, for controlling the resources used by pipe deliveries.
3198 PH/42 The content-scanning code uses fopen() to create files in which to put
3199 message data. Previously it was not paying any attention to the mode of
3200 the files. Exim runs with umask(0) because the rest of the code creates
3201 files with open(), and sets the required mode explicitly. Thus, these
3202 files were ending up world-writeable. This was not a big issue, because,
3203 being within the spool directory, they were not world-accessible. I have
3204 created a function called modefopen, which takes an additional mode
3205 argument. It sets umask(777), creates the file, chmods it to the required
3206 mode, then resets the umask. All the relevant calls to fopen() in the
3207 content scanning code have been changed to use this function.
3209 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
3210 to 24 hours. This avoids potential overflow problems when processing G
3211 and H retry rules. I suspect nobody ever tinkers with this value.
3213 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
3215 PH/45 When the plaintext authenticator is running as a client, the server's
3216 challenges are checked to ensure they are valid base64 strings. By
3217 default, the authentication attempt is cancelled if an invalid string is
3218 received. Setting client_ignore_invalid_base64 true ignores these errors.
3219 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
3220 they are received. Thus, the responses can be made to depend on the
3221 challenges. If an invalid string is ignored, an empty string is placed in
3222 the variable.
3224 PH/46 Messages that are created by the autoreply transport now contains a
3225 References: header, in accordance with RFCs 2822 and 3834.
3227 PH/47 Added authenticated_sender_force to the smtp transport.
3229 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
3231 PH/49 Installed latest patch from the Sieve maintainer.
3233 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
3234 was also set, the appendfile transport was unnecessarily scanning a
3235 directory of message files (e.g. for maildir delivery) to find the count
3236 of files (along with the size), even though it did not need this
3237 information. It now does the scan only if it needs to find either the
3238 size of the count of files.
3240 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
3242 PH/52 Two bugs concerned with error handling when the smtp transport is
3243 used in LMTP mode:
3245 (i) Exim was not creating retry information for temporary errors given
3246 for individual recipients after the DATA command when the smtp transport
3247 was used in LMTP mode. This meant that they could be retried too
3248 frequently, and not timed out correctly.
3250 (ii) Exim was setting the flag that allows error details to be returned
3251 for LMTP errors on RCPT commands, but not for LMTP errors for individual
3252 recipients that were returned after the DATA command.
3254 PH/53 This is related to PH/52, but is more general: for any failing address,
3255 when detailed error information was permitted to be returned to the
3256 sender, but the error was temporary, then after the final timeout, only
3257 "retry timeout exceeded" was returned. Now it returns the full error as
3258 well as "retry timeout exceeded".
3260 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
3261 do this, and (what is worse) MTAs that accept it.
3263 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
3264 will now be deprecated.
3266 PH/56 New os.c-cygwin from the Cygwin maintainer.
3268 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
3269 formats (previously only available in exim formats via -bpr, -bpru,
3270 and -bpra. Now also available in native and exiqgrep formats)
3272 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
3273 with very large, slow to parse queues
3275 JJ/08 exipick: added ! as generic prefix to negate any criteria format
3277 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
3279 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
3280 responses to authentication challenges, though it was showing the
3281 challenges; (ii) I've removed the CR characters from the debug output for
3282 SMTP output lines.
3284 PH/58 Allow for the insertion of a newline as well as a space when a string
3285 is turned into more than one encoded-word during RFC 2047 encoding. The
3286 Sieve code now uses this.
3288 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
3289 data_4xx, lost_connection, tls_required.
3291 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
3292 message was being sent as an SMTP response.
3294 PH/61 Add -l and -k options to exicyclog.
3296 PH/62 When verifying, if an address was redirected to one new address, so that
3297 verification continued, and the new address failed or deferred after
3298 having set something in $address_data, the value of $address_data was not
3299 passed back to the ACL. This was different to the case when no
3300 redirection occurred. The value is now passed back in both cases.
3302 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
3303 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
3304 use login_cap.h, so on its own it isn't the distinguishing feature. The
3305 new name refers directly to the setclassresources() function.
3307 PH/65 Added configuration files for NetBSD3.
3309 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
3311 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
3312 is preferred over IPv4.
3314 PH/68 The bounce_return_message and bounce_return_body options were not being
3315 honoured for bounces generated during the reception of non-SMTP messages.
3316 In particular, this applied to messages rejected by the ACL. This bug has
3317 been fixed. However, if bounce_return_message is true and bounce_return_
3318 body is false, the headers that are returned for a non-SMTP message
3319 include only those that have been read before the error was detected.
3320 (In the case of an ACL rejection, they have all been read.)
3322 PH/69 The HTML version of the specification is now built in a directory called
3323 spec_html instead of spec.html, because the latter looks like a path with
3324 a MIME-type, and this confuses some software.
3326 PH/70 Catch two compiler warnings in sieve.c.
3328 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
3329 function verify_get_ident() calls ip_connect() to connect a socket, but
3330 if the "connect()" function timed out, ip_connect() used to close the
3331 socket. However, verify_get_ident() also closes the socket later, and in
3332 between Exim writes to the log, which may get opened at this point. When
3333 the socket was closed in ip_connect(), the log could get the same file
3334 descriptor number as the socket. This naturally causes chaos. The fix is
3335 not to close the socket in ip_connect(); the socket should be closed by
3336 the function that creates it. There was only one place in the code where
3337 this was missing, in the iplookup router, which I don't think anybody now
3338 uses, but I've fixed it anyway.
3340 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
3341 well as to direct DNS lookups. Otherwise the handling of names in host
3342 lists is inconsistent and therefore confusing.
3345 Exim version 4.60
3346 -----------------
3348 PH/01 Two changes to the default runtime configuration:
3350 (1) Move the checks for relay_from_hosts and authenticated clients from
3351 after to before the (commented out) DNS black list checks.
3353 (2) Add control=submission to the relay_from_hosts and authenticated
3354 clients checks, on the grounds that messages accepted by these
3355 statements are most likely to be submissions.
3357 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
3359 (1) Generate an error if the third argument for the ${prvs expansion is
3360 not a single digit.
3362 (2) Treat a missing third argument of ${prvscheck as if it were an empty
3363 string.
3365 (3) Reset the variables that are obtained from the first argument of
3366 ${prvscheck and used in the second argument before leaving the code,
3367 because their memory is reclaimed, so using them afterwards may do
3368 silly things.
3370 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
3371 one (it's much easier than Tom thought :-).
3373 (5) Because of (4), we can now allow for the use of $prvscheck_result
3374 inside the third argument.
3376 PH/03 For some reason, the default setting of PATH when running a command from
3377 a pipe transport was just "/usr/bin". I have changed it to
3378 "/bin:/usr/bin".
3381 anything to be listed in the output from -bV.
3383 PH/05 When a filter generated an autoreply, the entire To: header line was
3384 quoted in the delivery log line, like this:
3386 => >A.N.Other <ano@some.domain> <original@ddress> ...
3388 This has been changed so that it extracts the operative address. There
3389 may be more than one such address. If so, they are comma-separated, like
3390 this:
3392 => >ano@some.domain,ona@other.domain <original@ddress> ...
3394 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
3395 command, (for example, EHLO []) and the client's IP address was
3396 not being looked up in the rDNS to get a host name, Exim was showing the
3397 IP address twice in Received: lines, even though the IP addresses were
3398 identical. For example:
3400 Received: from [] (helo=[])
3402 However, if the real host name was known, it was omitting the HELO data
3403 if it matched the actual IP address. This has been tidied up so that it
3404 doesn't show the same IP address twice.
3406 PH/07 When both +timestamp and +memory debugging was on, the value given by
3407 $tod_xxx expansions could be wrong, because the tod_stamp() function was
3408 called by the debug printing, thereby overwriting the timestamp buffer.
3409 Debugging no longer uses the tod_stamp() function when +timestamp is set.
3411 PH/08 When the original message was included in an autoreply transport, it
3412 always said "this is a copy of the message, including all the headers",
3413 even if body_only or headers_only was set. It now gives an appropriate
3414 message.
3416 PH/09 Applied a patch from the Sieve maintainer which:
3418 o fixes some comments
3419 o adds the (disabled) notify extension core
3420 o adds some debug output for the result of if/elsif tests
3421 o points to the current vacation draft in the documentation
3422 and documents the missing references header update
3424 and most important:
3426 o fixes a bug in processing the envelope test (when testing
3427 multiple envelope elements, the last element determined the
3428 result)
3430 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
3431 Electronic Mail") by including:
3433 Auto-submitted: auto-generated
3435 in the messages that it generates (bounce messages and others, such as
3436 warnings). In the case of bounce messages for non-SMTP messages, there was
3437 also a typo: it was using "Auto_submitted" (underscore instead of
3438 hyphen). Since every message generated by Exim is necessarily in response
3439 to another message, thes have all been changed to:
3441 Auto-Submitted: auto-replied
3443 in accordance with these statements in the RFC:
3445 The auto-replied keyword:
3447 - SHOULD be used on messages sent in direct response to another
3448 message by an automatic process,
3450 - MUST NOT be used on manually-generated messages,
3452 - MAY be used on Delivery Status Notifications (DSNs) and Message
3453 Disposition Notifications (MDNs),
3455 - MUST NOT be used on messages generated by automatic or periodic
3456 processes, except for messages which are automatic responses to
3457 other messages.
3459 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
3460 to the default Received: header definition.
3462 PH/12 Added log selector acl_warn_skipped (default on).
3464 PH/13 After a successful wildlsearch lookup, discard the values of numeric
3465 variables because (a) they are in the wrong storage pool and (b) even if
3466 they were copied, it wouldn't work properly because of the caching.
3468 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
3469 checking when decoding. Apparently there are clients that generate
3470 overlong encoded strings. Why am I not surprised?
3472 PH/15 If the first argument of "${if match_address" was not empty, but did not
3473 contain an "@" character, Exim crashed. Now it writes a panic log message
3474 and treats the condition as false.
3476 PH/16 In autoreply, treat an empty string for "once" the same as unset.
3478 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
3479 extension "envelope-auth". The code is finished and in agreement with
3480 other implementations, but there is no documentation so far and in fact,
3481 nobody wrote the draft yet. This extension is currently #undef'ed, thus
3482 not changing the active code.
3484 Print executed "if" and "elsif" statements when debugging is used. This
3485 helps a great deal to understand what a filter does.
3487 Document more things not specified clearly in RFC3028. I had all this
3488 sorted out, when out of a sudden new issues came to my mind. Oops."
3490 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
3491 (Bugzilla #53).
3493 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
3494 canonical form (as documented). However, after a host name lookup from
3495 the IP address, check_host() was doing a simple string comparison with
3496 addresses acquired from the DNS when checking that the found name did
3497 have the original IP as one of its addresses. Since any found IPv6
3498 addresses are likely to be in abbreviated form, the comparison could
3499 fail. Luckily, there already exists a function for doing the comparison
3500 by converting both addresses to binary, so now that is used instead of
3501 the text comparison.
3503 PH/20 There was another similar case to PH/19, when a complete host name was
3504 given in a host list; looking up its IP address could give an abbreviated
3505 form, whereas the current host's name might or might not be abbreviated.
3506 The same fix has been applied.
3509 Exim version 4.54
3510 -----------------
3512 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
3513 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
3514 It now does.
3516 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
3517 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
3519 PH/03 Typo: missing ".o" in src/pcre/Makefile.
3521 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
3522 header line, restrict the check to what is listed in RFCs 2369 and 2929.
3523 Also, for "Auto-Submitted", treat anything other than "no" as
3524 non-personal, in accordance with RFC 3834. (Previously it treated
3525 anything starting "auto-" as non-personal.)
3527 TF/01 The control=submission/name=... option had a problem with syntax
3528 errors if the name included a slash character. The /name= option
3529 now slurps the rest of the string, so it can include any characters
3530 but it must come last in the list of options (after /sender_retain
3531 or /domain=).
3533 PH/05 Some modifications to the interface to the fake nameserver for the new
3534 testing suite.
3538 Exim version 4.53
3539 -----------------
3541 TK/01 Added the "success_on_redirect" address verification option. See
3542 NewStuff for rationale and an example.
3544 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
3546 PH/02 Patch to exigrep to allow it to work on syslog lines.
3548 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
3549 fread() to skip over the body file's header line, because in Cygwin the
3550 header line is locked and is inaccessible.
3552 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
3553 co-exist for some time) to make it clear that it is the Exim ID that is
3554 referenced, not the Message-ID: header line.
3556 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
3557 string_format() function, because snprintf() does not exist on all
3558 operating systems.
3560 PH/06 The use of forbid_filter_existstest now also locks out the use of the
3561 ${stat: expansion item.
3563 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
3564 protocol synchronization error", to keep the pedants happy.
3566 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
3567 well as for IRIX systems, when gcc is being used. See the host.c source
3568 file for comments.
3570 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
3572 PH/10 Named domain lists were not working if used in a queue_smtp_domains
3573 setting.
3575 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
3576 transport and to the smtp transport in LMTP mode.
3578 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
3580 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
3581 run a filter in a subprocess. This could lead to confusion in subsequent
3582 lookups in the parent process. There should also be a search_tidyup() at
3583 the end of the subprocess.
3585 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
3586 only if the host matched helo_try_verify_hosts, which caused the
3587 verification to occur when the EHLO/HELO command was issued. The ACL just
3588 tested the remembered result. Now, if a previous verification attempt has
3589 not happened, "verify = helo" does it there and then.
3591 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
3593 TK/03 Fix log output including CR from clamd.
3595 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
3596 exist provoked a memory error which could cause a segfault.
3598 PH/15 Installed PCRE 6.2
3600 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
3602 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
3603 of the problem. Specifically, suggested +O2 rather than +O1 for the
3604 HP-UX compiler.
3606 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
3608 PH/20 If a delivery was routed to a non-standard port by means of an SRV
3609 record, the port was not correctly logged when the outgoing_port log
3610 selector was set (it logged the transort's default port).
3612 PH/21 Added support for host-specific ports to manualroute, queryprogram,
3613 fallback_hosts, and "hosts" in the smtp transport.
3615 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
3616 host errors such as "Connection refused".
3618 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
3619 authentication with radiusclient 0.4.9:
3621 - Error returned from rc_read_config was caught wrongly
3622 - Username/password not passed on to radius server due to wrong length.
3624 The presumption is that some radiusclient API changes for 4.51/PH/17
3625 were not taken care of correctly. The code is still untested by me (my
3626 Linux distribution still has 0.3.2 of radiusclient), but it was
3627 contributed by a Radius user.
3629 PH/24 When doing a callout, the value of $domain wasn't set correctly when
3630 expanding the "port" option of the smtp transport.
3632 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
3633 while reading a MIME header. Thanks to Tom Hughes for a patch.
3635 PH/24 Include config.h inside local_scan.h so that configuration settings are
3636 available.
3638 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
3639 that in an ACL for RCPT (for example), you can examine exactly what was
3640 received.
3642 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
3643 commands, but it was not correctly comparing the address with the actual
3644 client host address. Thus, it would show the EHLO address in Received:
3645 header lines when this was not necessary.
3647 PH/27 Added the % operator to ${eval:}.
3649 PH/28 Exim tries to create and chdir to its spool directory when it starts;
3650 it should be ignoring failures (because with -C, for example, it has lost
3651 privilege). It wasn't ignoring creation failures other than "already
3652 exists".
3654 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
3655 -bV or -d is used.
3657 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
3658 because an input line was too long, either on its own, or by virtue of
3659 too many continuations, the temporary file was not being removed, and the
3660 return code was incorrect.
3662 PH/31 Missing "BOOL" in function definition in filtertest.c.
3664 PH/32 Applied Sieve patches from the maintainer.
3666 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
3668 PH/33 Added "verify = not_blind".
3670 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
3671 Local/Makefile (with some defaults set). These are used in built scripts
3672 such as exicyclog, but they have never been used in the exim_install
3673 script (though there are many overriding facilities there). I have
3674 arranged that the exim_install script now takes note of these two
3675 settings.
3677 PH/35 Installed configuration files for Dragonfly.
3679 PH/36 When a locally submitted message by a trusted user did not contain a
3680 From: header, and the sender address was obtained from -f or from an SMTP
3681 MAIL command, and the trusted user did not use -F to supply a sender
3682 name, $originator_name was incorrectly used when constructing a From:
3683 header. Furthermore, $originator_name was used for submission mode
3684 messages from external hosts without From: headers in a similar way,
3685 which is clearly wrong.
3687 PH/37 Added control=suppress_local_fixups.
3689 PH/38 When log_selector = +received_sender was set, and the addition of the
3690 sender made the log line's construction buffer exactly full, or one byte
3691 less than full, an overflow happened when the terminating "\n" was
3692 subsequently added.
3694 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
3695 when the result of a list match is failure because a DNS lookup failed.
3697 PH/40 RM_COMMAND is now used in the building process.
3699 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
3700 the "build-* directories that it finds.
3702 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
3703 address in a domain literal was a prefix of an interface address.
3705 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
3706 when verifying a sender address, unless rewrite_headers is false.
3708 PH/44 Wrote a long comment about why errors_to addresses are verified as
3709 recipients, not senders.
3711 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
3712 the ratelimit ACL was added.
3714 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
3716 PH/46 Added extra information about PostgreSQL errors to the error string.
3718 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
3719 avoiding the need to install special zones in a real server. This is
3720 backwards compatible; if it can't find the fake resolver, it drops back.
3721 Thus, both old and new test suites can be run.
3723 TF/02 Added util/
3725 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
3726 clock is set back in time.
3728 TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
3729 Candler <>.
3731 TF/05 The fix for PH/43 was not completely correct; widen_domains is always
3732 OK for addresses that are the result of redirections.
3734 PH/48 A number of further additions for the benefit of the new test suite,
3735 including a fake gethostbyname() that interfaces to the fake DNS resolver
3736 (see PH/47 above).
3738 TF/06 The fix for widen_domains has also been applied to qualify_single and
3739 search_parents which are the other dnslookup options that can cause
3740 header rewrites.
3742 PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
3743 type ("H").
3745 PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
3747 TF/07 Exim produced the error message "an SRV record indicated no SMTP
3748 service" if it encountered an MX record with an empty target hostname.
3749 The message is now "an MX or SRV record indicated no SMTP service".
3751 TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
3752 if the DNS of the sending site is misconfigured. This is quite a
3753 common situation. This change restores the behaviour of treating a
3754 helo verification defer as a failure.
3756 PH/51 If self=fail was set on a router, the bounce message did not include the
3757 actual error message.
3760 Exim version 4.52
3761 -----------------
3763 TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
3765 PH/01 When a transport filter timed out in a pipe delivery, and the pipe
3766 command itself ended in error, the underlying message about the transport
3767 filter timeout was being overwritten with the pipe command error. Now the
3768 underlying error message should be appended to the second error message.
3770 TK/01 Fix poll() being unavailable on Mac OSX 10.2.
3772 PH/02 Reduce the amount of output that "make" produces by default. Full output
3773 can still be requested.
3775 PH/03 The warning log line about a condition test deferring for a "warn" verb
3776 was being output only once per connection, rather than after each
3777 occurrence (because it was using the same function as for successful
3778 "warn" verbs). This seems wrong, so I have changed it.
3780 TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
3781 it should not have, which might have caused a crash in the right
3782 circumstances, but probably never did.
3784 PH/04 Installed a modified version of Tony Finch's patch to make submission
3785 mode fix the return path as well as the Sender: header line, and to
3786 add a /name= option so that you can make the user's friendly name appear
3787 in the header line.
3789 TF/03 Added the control = fakedefer ACL modifier.
3791 TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
3792 Mark Lowes for thorough testing.
3794 TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
3796 TK/03 Merged latest SRS patch from Miles Wilton.
3798 PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
3799 with the definition in sysexits.h (which is #included earlier).
3800 Fortunately, Exim does not actually use EX_OK. The code used to try to
3801 preserve the sysexits.h value, by assuming that macro definitions were
3802 scanned for macro replacements. I have been disabused of this notion,
3803 so now the code just undefines EX_OK before #including unistd.h.
3805 PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
3806 in the smtp transport. When a block could not be written in a single
3807 write() function, the timeout was being re-applied to each part-write.
3808 This seems wrong - if the receiver was accepting one byte at a time it
3809 would take for ever. The timeout is now adjusted when this happens. It
3810 doesn't have to be particularly precise.
3812 TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
3813 details. Thanks to Chris Webb <> for the patch!
3815 PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
3816 without a domain if the check to <postmaster@domain> fails.
3818 SC/01 Eximstats: added -xls and the ability to specify output files
3819 (patch written by Frank Heydlauf).
3821 SC/02 Eximstats: use FileHandles for outputting results.
3823 SC/03 Eximstats: allow any combination of xls, txt, and html output.
3825 SC/04 Eximstats: fixed display of large numbers with -nvr option
3827 SC/05 Eximstats: fixed merging of reports with empty tables.
3829 SC/06 Eximstats: added the -include_original_destination flag
3831 SC/07 Eximstats: removed tabs and trailing whitespace.
3833 TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
3835 TK/06 MBOX spool code: Add real "From " MBOX separator line
3836 so the .eml file is really in mbox format (even though
3837 most programs do not really care). Patch from Alex Miller.
3839 TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
3840 The latter is generated from $received_to and is only set if the
3841 message has one envelope recipient. SA can use these headers,
3842 obviously out-of-the-box. Patch from Alex Miller.
3844 PH/08 The ${def test on a variable was returning false if the variable's
3845 value was "0", contrary to what the specification has always said!
3846 The result should be true unless the variable is empty.
3848 PH/09 The syntax error of a character other than { following "${if
3849 def:variable_name" (after optional whitespace) was not being diagnosed.
3850 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
3851 accidental colon was present, for example, could give incorrect results.
3853 PH/10 Tidied the code in a number of places where the st_size field of a stat()
3854 result is used (not including appendfile, where other changes are about
3855 to be made).
3857 PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
3858 This involved changing a lot of size variables from int to off_t. It
3859 should work with maildirs and everything.
3861 TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
3862 spamd dying while we are connected to it.
3864 TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
3865 <>
3867 PH/12 Applied Alex Kiernan's patch for the API change for the error callback
3868 function for BDB 4.3.
3870 PH/13 Changed auto_thaw such that it does not apply to bounce messages.
3872 PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
3873 the sources for PCRE have been re-arranged and more files are now
3874 involved.
3876 PH/15 The code I had for printing potentially long long variables in PH/11
3877 above was not the best (it lost precision). The length of off_t variables
3878 is now inspected at build time, and an appropriate printing format (%ld
3879 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
3880 to be "long long int" or "long int". This is needed for the internal
3881 formatting function string_vformat().
3883 PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
3884 the configuration file to be ":syslog", then the script "guesses" where
3885 the logs files are, rather than using the compiled in default. In our
3886 case the guess is not the same as the compiled default, so the script
3887 suddenly stopped working when I started to use syslog. The patch checks
3888 to see if log_file_path is "". If so, it attempts to read it from exim
3889 with no configuration file to get the compiled in version, before it
3890 falls back to the previous guessing code."
3892 TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
3893 implementing BATV in an Exim configuration. See NewStuff for the gory
3894 details.
3896 PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
3897 Makefile that are specific to HP-UX.
3899 PH/18 If the "use_postmaster" option was set for a recipient callout together
3900 with the "random" option, the postmaster address was used as the MAIL
3901 FROM address for the random test, but not for the subsequent recipient
3902 test. It is now used for both.
3904 PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
3905 patch removes a few documentation additions to RFC 3028, because the
3906 latest draft now contains them. It adds the new en;ascii-case comparator
3907 and a new error check for 8bit text in MIME parts. Comparator and
3908 require names are now matched exactly. I enabled the subaddress
3909 extension, but it is not well tested yet (read: it works for me)."
3911 PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
3912 rework some of the code of TK/09 above to avoid the hardwired use of
3913 "%lld" and "long long". Replaced the call to snprintf() with a call to
3914 string_vformat().
3916 PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
3917 records point to non-existent hosts", "retry timeout exceeded", and
3918 "retry time not reached for any host after a long failure period".
3920 PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
3921 experimental DomainKeys support:
3923 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
3924 (2) On an error such as an illegally used "control", the wrong name for
3925 the control was given.
3927 These problems did NOT occur unless DomainKeys support was compiled.
3929 PH/23 Added daemon_startup_retries and daemon_startup_sleep.
3931 PH/24 Added ${if match_ip condition.
3933 PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
3934 databases so that it will be absolutely obvious if a crash occurs in the
3935 DB library. This is a regular occurrence (often caused by mis-matched
3936 db.h files).
3938 PH/26 Insert a lot of missing (void) casts for functions such as chown(),
3939 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
3940 picked up on a user's system that detects such things. There doesn't seem
3941 to be a gcc warning option for this - only an attribute that has to be
3942 put on the function's prototype. It seems that in Fedora Core 4 they have
3943 set this on a number of new functions. No doubt there will be more in due
3944 course.
3946 PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
3947 specify a transport. However, if an address that was verified by such a
3948 router was the subject of a callout, Exim crashed because it tried to
3949 read the rcpt_include_affixes from the non-existent transport. Now it
3950 just assumes that the setting of that option is false. This bug was
3951 introduced by 4.51/PH/31.
3953 PH/28 Changed -d+all to exclude +memory, because that information is very
3954 rarely of interest, but it makes the output a lot bigger. People tend to
3955 do -d+all out of habit.
3957 PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
3958 code in os-type was giving problems when lives in lib64, like on
3959 x86_64 Fedora Core.
3961 PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
3962 aren't the modern standard, and it seems that some systems' include files
3963 don't always have them. Exim was already checking for some of the newer
3964 ones like T_AAAA, and defining it itself. I've added checks for all the
3965 record types that Exim uses.
3967 PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
3968 not automatically generating a new one, as it is supposed to. This
3969 prevented TLS from working. If the file did exist, but contained invalid
3970 data, a new version was generated, as expected. It was only the case of a
3971 non-existent file that was broken.
3973 TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
3974 with a change in libdomainkeys > 0.64.
3976 TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
3977 from DNS. If the selector record carries the flag, it now has
3978 precedence over the domain-wide flag.
3980 TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
3982 PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
3983 the use of a port name that isn't defined in /etc/services) occurred, the
3984 message was deferred as in a normal delivery, and thus remained on the
3985 spool, instead of being failed because of the mua_wrapper setting. This
3986 is now fixed, and I tidied up some of the mua_wrapper messages at the
3987 same time.
3989 SC/08 Eximstats: whilst parsing the mainlog(s), store information about
3990 the messages in a hash of arrays rather than using individual hashes.
3991 This is a bit cleaner and results in dramatic memory savings, albeit
3992 at a slight CPU cost.
3994 SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
3995 as requested by Marc Sherman.
3997 SC/10 Eximstats: added histograms for user specified patterns as requested
3998 by Marc Sherman.
4000 SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
4002 PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
4003 fopen() in the content-scanning modules that did not already have it.
4006 Exim version 4.51
4007 -----------------
4009 TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
4010 doc/experimental-spec.txt for details. (
4012 TK/02 Fix ACL "control" statement not being available in MIME ACL.
4014 TK/03 Fix ACL "regex" condition not being available in MIME ACL.
4016 PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
4017 to test Sieve filters that use "vacation".
4019 PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
4020 that changes the way the GnuTLS parameters are stored in the cache file.
4021 The new format can be generated externally. For backward compatibility,
4022 if the data in the cache doesn't make sense, Exim assumes it has read an
4023 old-format file, and it generates new data and writes a new file. This
4024 means that you can't go back to an older release without removing the
4025 file.
4027 PH/03 A redirect router that has both "unseen" and "one_time" set does not
4028 work if there are any delivery delays because "one_time" forces the
4029 parent to be marked "delivered", so its unseen clone is never tried
4030 again. For this reason, Exim now forbids the simultaneous setting of
4031 these two options.
4033 PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
4034 redirected to themselves ("homonym" addresses). Read the long ChangeLog
4035 entry if you want to know the details. The fix, however, neglected to
4036 consider the case when local delivery batching is involved. The test for
4037 "previously delivered" was not happening when checking to see if an
4038 address could be batched with a previous (undelivered) one; under
4039 certain circumstances this could lead to multiple deliveries to the same
4040 address.
4042 PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
4043 in its include files, and this causes problems building Exim.
4045 PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
4046 header_syntax) but Exim was just ignoring anything given after a slash.
4047 In particular, this caused confusion with an attempt to use "verify =
4048 reverse_host_lookup/defer_ok". An error is now given when options are
4049 supplied for verify items that do not have them. (Maybe reverse_host_
4050 lookup should have a defer_ok option, but that's a different point.)
4052 PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
4053 defined by RFC 821) to 2048, because there were problems with some AUTH
4054 commands, and RFC 1869 says the size should be increased for extended
4055 SMTP commands that take arguments.
4057 PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
4058 Finch).
4060 PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
4061 "unknown" error; now it says that the functionality isn't in the binary.
4063 PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
4064 an address' error message when a string expansion fails (syntax or
4065 whatever). Otherwise the password may appear in the log. Following change
4066 PH/42 below, there is no longer a chance of it appearing in a bounce
4067 message.
4069 PH/11 Installed exipick version 20050225.0 from John Jetmore.
4071 PH/12 If the last host in a fallback_hosts list was multihomed, only the first
4072 of its addresses was ever tried. (Bugzilla bug #2.)
4074 PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
4075 the result incorrectly in the debug output. (It correctly added a newline
4076 to what was transported.)
4078 TF/01 Added $received_time.
4080 PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
4081 commented out examples of how to interface to a virus scanner and to
4082 SpamAssassin. Also added commented examples of av_scanner and
4083 spamd_address settings.
4085 PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
4086 and controls are allowed in which ACLs. There were a couple of minor
4087 errors. Some of the entries in the conditions table (which is a table of
4088 where they are NOT allowed) were getting very unwieldy; rewrote them as a
4089 negation of where the condition IS allowed.
4091 PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
4093 PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
4094 header file does not have a version number, so I've had to invent a new
4095 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
4096 API. The code is untested by me (my Linux distribution still has 0.3.2 of
4097 radiusclient), but it was contributed by a Radius user.
4099 PH/18 Installed Lars Mainka's patch for the support of CRL collections in
4100 files or directories, for OpenSSL.
4102 PH/19 When an Exim process that is running as root has to create an Exim log
4103 file, it does so in a subprocess that runs as exim:exim so as to get the
4104 ownership right at creation (otherwise, other Exim processes might see
4105 the file with the wrong ownership). There was no test for failure of this
4106 fork() call, which would lead to the process getting stuck as it waited
4107 for a non-existent subprocess. Forks do occasionally fail when resources
4108 run out. I reviewed all the other calls to fork(); they all seem to check
4109 for failure.
4111 PH/20 When checking for unexpected SMTP input at connect time (before writing
4112 the banner), Exim was not dealing correctly with a non-positive return
4113 from the read() function. If the client had disconnected by this time,
4114 the result was a log entry for a synchronization error with an empty
4115 string after "input=" when read() returned zero. If read() returned -1
4116 (an event I could not check), uninitialized data bytes were printed.
4117 There were reports of junk text (parts of files, etc) appearing after
4118 "input=".
4120 PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
4122 PH/22 Added support for macro redefinition, and (re)definition in between
4123 driver and ACL definitions.
4125 PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
4126 forgetting to use the resulting value; it was using the unexpanded value.
4128 PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
4129 hadn't been configured. The fix is from Juergen Kreileder, who
4130 understands it better than I do:
4132 "Here's what I see happening with three configured cyrus_sasl
4133 authenticators configured (plain, login, cram-md5):
4135 On startup auth_cyrus_sasl_init() gets called for each of these.
4136 This means three calls to sasl_listmech() without a specified mech_list.
4137 => SASL tests which mechs of all available mechs actually work
4138 => three warnings about OTP not working
4139 => the returned list contains: plain, login, cram-md5, digest-md5, ...
4141 With the patch, sasl_listmech() also gets called three times. But now
4142 SASL's mech_list option is set to the server_mech specified in the the
4143 authenticator. Or in other words, the answer from sasl_listmech()
4144 gets limited to just the mech you're testing for (which is different
4145 for each call.)
4146 => the return list contains just 'plain' or 'login', 'cram-md5' or
4147 nothing depending on the value of ob->server_mech.
4149 I've just tested the patch: Authentication still works fine,
4150 unavailable mechs specified in the exim configuration are still
4151 caught, and the auth.log warnings about OTP are gone."
4153 PH/25 When debugging is enabled, the contents of the command line are added
4154 to the debugging output, even when log_selector=+arguments is not
4155 specified.
4157 PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
4158 answer is "GNU", and only if the return is "GNU/something" is the answer
4159 "Linux".
4161 PH/27 $acl_verify_message is now set immediately after the failure of a
4162 verification in an ACL, and so is available in subsequent modifiers. In