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.
11 JH/01 Bug 2351: Log failures to extract envelope addresses from message headers.
17 JH/01 Remove code calling the customisable local_scan function, unless a new
18 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
20 JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
21 non-signal-safe functions being used.
23 JH/03 Bug 2269: When presented with a received message having a stupidly large
24 number of DKIM-Signature headers, disable DKIM verification to avoid
25 a resource-consumption attack. The limit is set at twenty.
27 JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
28 report of oldest_pass in ${authres } in consequence, and separate out
29 some descriptions of reasons for verification fail.
31 JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
32 files in the spool were present and unlocked. A queue-runner could spot
33 them, resulting in a duplicate delivery. Fix that by doing the unlock
34 after the unlink. Investigation by Tim Stewart. Take the opportunity to
35 add more error-checking on spoolfile handling while that code is being
38 PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
39 No known attacks, no CVE, this is defensive hardening.
41 JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
42 a queue-runner could start a delivery while other operations were ongoing.
43 Cutthrough delivery was a common victim, resulting in duplicate delivery.
44 Found and investigated by Tim Stewart. Fix by using the open message data
45 file handle rather than opening another, and not locally closing it (which
46 releases a lock) for that case, while creating the temporary .eml format
47 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
49 JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
50 $sender_verify_failure/$recipient_verify_failure to "random".
52 JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
55 JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
56 Previously this would segfault.
58 JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
61 JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
62 like zero, since the resolver should be doing this for us, But we need one
63 as a CNAME but no MX presence gets the CNAME returned; we need to check
64 that doesn't point to an MX to declare it "no MX returned" rather than
65 "error, loop". A new main option is added so the older capability of
66 following some limited number of chain links is maintained.
68 JH/12 Add client-ip info to non-pass iprev ${authres } lines.
70 JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
71 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
72 now-deprecated earlier definitions used only specified the range up to TLS
73 1.2 (in the older-version library docs).
75 JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
77 JH/15 Rework TLS client-side context management. Stop using a global, and
78 explicitly pass a context around. This enables future use of TLS for
79 connections to service-daemons (eg. malware scanning) while a client smtp
80 connection is using TLS; with cutthrough connections this is quite likely.
82 JH/16 Fix ARC verification to do AS checks in reverse order.
84 JH/17 Support a "tls" option on the ${readsocket } expansion item.
86 JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
87 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
88 Previously the "utf8" would be re-prepended for every additional message.
90 JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
91 Previously thery were accepted, resulting in issues when attempting to
92 forward messages to a non-supporting MTA.
94 PP/02 Let -n work with printing macros too, not just options.
96 JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
97 one parent address was copied, and bogus data was used at delivery-logging
98 time. Either a crash (after delivery) or bogus log data could result.
99 Discovery and analysis by Tim Stewart.
101 PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
102 Previously if the string ended mid-character, we did not insert the
103 promised '?' replacement.
105 PP/04 Documentation: current string operators work on bytes, not codepoints.
107 JH/21 Change as many as possible of the global flags into one-bit bitfields; these
108 should pack well giving a smaller memory footprint so better caching and
109 therefore performance. Group the declarations where this can't be done so
110 that the byte-sized flag variables are not interspersed among pointer
111 variables, giving a better chance of good packing by the compiler.
113 JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
114 non-null, to avoid issues with sites running BATV. Previously reports were
115 sent with an empty envelope sender so looked like bounces.
117 JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
118 The ignore_error flag wasn't being returned from the filter subprocess so
119 was not set for later routers. Investigation and fix by Matthias Kurz.
121 JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
122 and a msg:complete for the whole, when a message is manually removed using
123 -Mrm. Developement by Matthias Kurz, hacked on by JH.
125 JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
126 a "Gnu special" function, asprintf() in the DB utility binary builds; I
127 hope that is portable enough.
129 JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
130 requiring a known-CA anchor certificate; make it now rely entirely on the
131 TLSA as an anchor. Checking the name on the leaf cert against the name
132 on the A-record for the host is still done for TA (but not for EE mode).
134 JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
135 included in delivery lines for non-proxied connections, when compiled with
136 SUPPORT_SOCKS and running with proxy logging enabled.
138 JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
139 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
140 move the existing event to fire before the normal logging of message
141 failure so that custom logging is bracketed by normal logging.
143 JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
144 msg:fail:internal event. Developement by Matthias Kurz.
146 JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
147 far too small for todays use of crypto signatures stored there. Go all
148 the way to the max DNS message size of 64kB, even though this might be
149 overmuch for IOT constrained device use.
151 JH/31 Fix a bad use of a copy function, which could be used to pointlessly
152 copy a string over itself. The library routine is documented as not
153 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
155 JH/32 For main options check_spool_space and check_inode_space, where the
156 platform supports 64b integers, support more than the previous 2^31 kB
157 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
158 the previous G, M, k.
160 JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
161 $authenticated_fail_id variable on authentication failure. Previously
164 JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
165 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
166 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
167 GNUTLS_SEC_PARAM_MEDIUM.
169 JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server
170 side. Previously we would continue as if no SNI had been received.
172 JH/36 Harden the handling of string-lists. When a list consisted of a sole
173 "<" character, which should be a list-separator specification, we walked
174 off past the nul-terimation.
176 JH/37 Bug 2341: Send "message delayed" warning MDNs (restricted to external
177 causes) even when the retry time is not yet met. Previously they were
178 not, meaning that when (say) an account was over-quota and temp-rejecting,
179 and multiple senders' messages were queued, only one sender would get
180 notified on each configured delay_warning cycle.
186 GF/01 DEFER rather than ERROR on redis cluster MOVED response.
187 When redis_servers is set to a list of > 1 element, and the Redis servers
188 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
189 case of MOVED into a DEFER case instead, thus moving the query onto the
190 next server in the list. For a cluster of N elements, all N servers must
191 be defined in redis_servers.
193 GF/02 Catch and remove uninitialized value warning in exiqsumm
194 Check for existence of @ARGV before looking at $ARGV[0]
196 JH/01 Replace the store_release() internal interface with store_newblock(),
197 which internalises the check required to safely use the old one, plus
198 the allocate and data copy operations duplicated in both (!) of the
199 extant use locations.
201 JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
202 modifier. This matches the restriction on the commandline.
204 JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
205 Previously only the last row was returned.
207 JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
208 we assumed that tags in the header were well-formed, and parsed the
209 element content after inspecting only the first char of the tag.
210 Assumptions at that stage could crash the receive process on malformed
213 JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
214 While running the DKIM ACL we operate on the Permanent memory pool so that
215 variables created with "set" persist to the DATA ACL. Also (at any time)
216 DNS lookups that fail create cache records using the Permanent pool. But
217 expansions release any allocations made on the current pool - so a dnsdb
218 lookup expansion done in the DKIM ACL releases the memory used for the
219 DNS negative-cache, and bad things result. Solution is to switch to the
220 Main pool for expansions.
221 While we're in that code, add checks on the DNS cache during store_reset,
222 active in the testsuite.
223 Problem spotted, and debugging aided, by Wolfgang Breyha.
225 JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
226 When none of the hosts presented to a transport match an already-open
227 connection, close it and proceed with the list. Previously we would
228 queue the message. Spotted by Lena with Yahoo, probably involving
231 JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
232 Previously a spurious "250 OK id=" response was appended to the proper
235 JH/08 The "support for" informational output now, which built with Content
236 Scanning support, has a line for the malware scanner interfaces compiled
237 in. Interface can be individually included or not at build time.
239 JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
240 by the template makefile "src/EDITME". The "STREAM" support for an older
241 ClamAV interface method is removed.
243 JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
244 rows affected is given instead).
246 JH/11 The runtime Berkeley DB library version is now additionally output by
247 "exim -d -bV". Previously only the compile-time version was shown.
249 JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
250 SMTP connection. Previously, when one had more receipients than the
251 first, an abortive onward connection was made. Move to full support for
252 multiple onward connections in sequence, handling cutthrough connection
253 for all multi-message initiating connections.
255 JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
256 routers. Previously, a multi-recipient message would fail to match the
257 onward-connection opened for the first recipient, and cause its closure.
259 JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
260 a timeout on read on a GnuTLS initiating connection, resulting in the
261 initiating connection being dropped. This mattered most when the callout
262 was marked defer_ok. Fix to keep the two timeout-detection methods
265 JH/15 Relax results from ACL control request to enable cutthrough, in
266 unsupported situations, from error to silently (except under debug)
267 ignoring. This covers use with PRDR, frozen messages, queue-only and
270 HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
272 JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
273 metadata, resulting in a crash in free().
275 PP/01 Fix broken Heimdal GSSAPI authenticator integration.
276 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
277 Broken also in d185889f4, with init system revamp.
279 JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
280 Previously we abruptly closed the connection after reading a malware-
281 found indication; now we go on to read the "scan ok" response line,
284 JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
285 ACL. Previously, a crash would result.
287 JH/19 Speed up macro lookups during configuration file read, by skipping non-
288 macro text after a replacement (previously it was only once per line) and
289 by skipping builtin macros when searching for an uppercase lead character.
291 JH/20 DANE support moved from Experimental to mainline. The Makefile control
292 for the build is renamed.
294 JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
295 was allocated for every new TLS startup, meaning one per message. Fix
296 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
298 JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
299 reported the original. Fix to report (as far as possible) the ACL
300 result replacing the original.
302 JH/23 Fix memory leak during multi-message connections using STARTTLS under
303 OpenSSL. Certificate information is loaded for every new TLS startup,
304 and the resources needed to be freed.
306 JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
308 JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
311 JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
312 DATA response info to the (existing) per-recipient response info for
313 the "C=" log element. It can have useful tracking info from the
314 destination system. Patch from Simon Arlott.
316 JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
317 length value. Previously this would segfault.
319 HS/02 Support Avast multiline protoocol, this allows passing flags to
320 newer versions of the scanner.
322 JH/28 Ensure that variables possibly set during message acceptance are marked
323 dead before release of memory in the daemon loop. This stops complaints
324 about them when the debug_store option is enabled. Discovered specifically
325 for sender_rate_period, but applies to a whole set of variables.
326 Do the same for the queue-runner and queue-list loops, for variables set
327 from spool message files. Do the same for the SMTP per-message loop, for
328 certain variables indirectly set in ACL operations.
330 JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
331 as a multi-recipient message from a mailinglist manager). The coding had
332 an arbitrary cutoff number of characters while checking for more input;
333 enforced by writing a NUL into the buffer. This corrupted long / fast
334 input. The problem was exposed more widely when more pipelineing of SMTP
335 responses was introduced, and one Exim system was feeding another.
336 The symptom is log complaints of SMTP syntax error (NUL chars) on the
337 receiving system, and refused recipients seen by the sending system
338 (propating to people being dropped from mailing lists).
339 Discovered and pinpointed by David Carter.
341 JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
342 replaced by the ${authresults } expansion.
344 JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
346 HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
347 allows proper process termination in container environments.
349 JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
350 Previously the "final dot" had a newline after it; ensure it is CR,LF.
352 JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
353 and "err_perm", deprecated since 4.83 when the RFC-defined words
354 "temperror" and "permerror" were introduced.
356 JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
357 transport-filters or DKIM-signing. The restriction was lost in the
358 consolidation of verify-callout and delivery SMTP handling.
359 Extend the restriction to also cover ARC-signing.
361 JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
362 in defer=pass mode supply a 450 to the initiator. Previously the message
365 PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
366 tls_require_ciphers is used as before.
368 HS/03 Malware Avast: Better match the Avast multiline protocol. Add
369 "pass_unscanned". Only tmpfails from the scanner are written to
370 the paniclog, as they may require admin intervention (permission
371 denied, license issues). Other scanner errors (like decompression
372 bombs) do not cause a paniclog entry.
374 JH/36 Fix reinitialisation of DKIM logging variable between messages.
375 Previously it was possible to log spurious information in receive log
378 JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
379 triggered odd behaviour from Outlook Express clients.
381 PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
384 JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
385 since the IETF WG has not yet settled on that versus the original
386 "bare" representation.
388 JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
389 Previously the millisecond value corrupted the output.
390 Fix also for syslog_pid=no and log_selector +pid, for which the pid
391 corrupted the output.
397 JH/01 Rework error string handling in TLS interface so that the caller in
398 more cases is responsible for logging. This permits library-sourced
399 string to be attached to addresses during delivery, and collapses
400 pairs of long lines into single ones.
402 PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
403 during configuration. Wildcards are allowed and expanded.
405 JH/02 Rework error string handling in DKIM to pass more info back to callers.
406 This permits better logging.
408 JH/03 Rework the transport continued-connection mechanism: when TLS is active,
409 do not close it down and have the child transport start it up again on
410 the passed-on TCP connection. Instead, proxy the child (and any
411 subsequent ones) for TLS via a unix-domain socket channel. Logging is
412 affected: the continued delivery log lines do not have any DNSSEC, TLS
413 Certificate or OCSP information. TLS cipher information is still logged.
415 JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
416 identical IP addresses on different listening ports. Will also affect
419 PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
420 add noisy ifdef guards to special-case this sillyness.
421 Patch from Bernd Kuhls.
423 JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
424 than 255 are no longer allowed.
426 JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
427 Disable the session-cache too, which might reduce our load. Since we
428 currrectly use a new context for every connection, both as server and
429 client, there is no benefit for these.
430 GnuTLS appears to not support tickets server-side by default (we don't
431 call gnutls_session_ticket_enable_server()) but client side is enabled
432 by default on recent versions (3.1.3 +) unless the PFS priority string
435 PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
436 <https://reproducible-builds.org/specs/source-date-epoch/>.
438 JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
439 the check for any unsuccessful recipients did not notice the limit, and
440 erroneously found still-pending ones.
442 JH/08 Pipeline CHUNKING command and data together, on kernels that support
443 MSG_MORE. Only in-clear (not on TLS connections).
445 JH/09 Avoid using a temporary file during transport using dkim. Unless a
446 transport-filter is involved we can buffer the headers in memory for
447 creating the signature, and read the spool data file once for the
448 signature and again for transmission.
450 JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
451 4.77 as the kernel support then wasn't solid, having issues in 64bit
452 mode. Now, it's been long enough. Add support for FreeBSD also.
454 JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
455 case where the routing stage had gathered several addresses to send to
456 a host before calling the transport for the first, we previously failed
457 to close down TLS in the old transport process before passing the TCP
458 connection to the new process. The new one sent a STARTTLS command
459 which naturally failed, giving a failed delivery and bloating the retry
460 database. Investigation and fix prototype from Wolfgang Breyha.
462 JH/12 Fix check on SMTP command input synchronisation. Previously there were
463 false-negatives in the check that the sender had not preempted a response
464 or prompt from Exim (running as a server), due to that code's lack of
465 awareness of the SMTP input buffering.
467 PP/04 Add commandline_checks_require_admin option.
468 Exim drops privileges sanely, various checks such as -be aren't a
469 security problem, as long as you trust local users with access to their
470 own account. When invoked by services which pass untrusted data to
471 Exim, this might be an issue. Set this option in main configuration
472 AND make fixes to the calling application, such as using `--` to stop
475 JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
476 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
477 responses to those, into a single TLS record each way (this usually means
478 a single packet). As a side issue, smtp_enforce_sync now works on TLS
481 PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
482 affects you only if you're dancing at the edge of the param size limits.
483 If you are, and this message makes sense to you, then: raise the
484 configured limit or use OpenSSL 1.1. Nothing we can do for older
487 JH/14 For the "sock" variant of the malware scanner interface, accept an empty
488 cmdline element to get the documented default one. Previously it was
491 JH/15 Fix a crash in the smtp transport caused when two hosts in succession
492 are unsuable for non-message-specific reasons - eg. connection timeout,
493 banner-time rejection.
495 JH/16 Fix logging of delivery remote port, when specified by router, under
498 PP/06 Repair manualroute's ability to take options in any order, even if one
499 is the name of a transport.
502 HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
504 JH/17 Change the list-building routines interface to use the expanding-string
505 triplet model, for better allocation and copying behaviour.
507 JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
508 Previously it was constructed the first time a possibly-matching string
509 was met in the configuration file input during startup; now it is done
512 JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
513 compatible one, to avoid the (poorly documented) possibility of a config
514 file in the working directory redirecting the DB files, possibly correpting
515 some existing file. CVE-2017-10140 assigned for BDB.
517 JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
518 cache-hot. Previously, although the result was properly cached, the
519 initial verify call returned a defer.
521 JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
522 the main verify for receipient in uncached-mode.
524 JH/22 Retire historical build files to an "unsupported" subdir. These are
525 defined as "ones for which we have no current evidence of testing".
527 JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
528 if present. Previously it was ignored.
530 JH/24 Start using specified-initialisers in C structure init coding. This is
531 a C99 feature (it's 2017, so now considered safe).
533 JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
534 if was a fixed-sized field and bitmask ops via macros; it is now more
537 PP/07 GitHub PR 56: Apply MariaDB build fix.
538 Patch provided by Jaroslav Škarvada.
540 PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
541 during Coverity cleanups [4.87 JH/47]
542 Diagnosis and fix provided by Michael Fischer v. Mollard.
544 JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
545 the right size to place the terminating semicolon on its own folded
546 line, the header hash was calculated to an incorrect value thanks to
547 the (relaxed) space the fold became.
549 HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
550 and confused the parent.
552 JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
553 which could crash as a result. This could lead to undeliverable messages.
555 JH/28 Logging: "next input sent too soon" now shows where input was truncated
558 JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
559 matters on fast-turnover and PID-randomising systems, which were getting
560 out-of-order delivery.
562 JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
563 a possibly-overlapping copy. The symptom was that "Remote host closed
564 connection in response to HELO" was logged instead of the actual 4xx
567 JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
568 Previously only that bufferd was discarded, resulting in SYMTP command
571 JH/32 DKIM: when a message has multiple signatures matching an identity given
572 in dkim_verify_signers, run the dkim acl once for each. Previously only
573 one run was done. Bug 2189.
575 JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
576 "panic the current process" to "deliberately defer". The panic log is
577 still written with the problem list name; the mail and reject logs now
578 get a temp-reject line for the message that was being handled, saying
579 something like "domains check lookup or other defer". The SMTP 451
580 message is still "Temporary local problem".
582 JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
583 A crafted sequence of BDAT commands could result in in-use memory beeing
584 freed. CVE-2017-16943.
586 HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
587 from SMTP input. Previously it was always done; now only done for DATA
588 and not BDAT commands. CVE-2017-16944.
590 JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
591 to the message (such as an overlong header line). Previously this was
592 not done and we did not exit BDAT mode. Followon from the previous item
593 though a different problem.
599 JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
600 than -2003 did; needs libidn2 in addition to libidn.
602 JH/02 The path option on a pipe transport is now expanded before use.
604 PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
605 Patch provided by "Björn", documentation fix added too.
607 JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
608 missing a wire-to-host endian conversion.
610 JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
611 close after a BDAT command line could be taken as a following command,
612 giving a synch failure. Fix by only checking for synch immediately
613 before acknowledging the chunk.
615 PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
616 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
617 macro. Patches provided by Josh Soref.
619 JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
620 Previously we did not; the RFC seems ambiguous and VRFY is not listed
621 by IANA as a service extension. However, John Klensin suggests that we
624 JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
625 the dkim code may be unix-mode line endings rather than smtp wire-format
626 CRLF, so prepend a CR to any bare LF.
628 JH/07 Rationalise the coding for callout smtp conversations and transport ones.
629 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
631 JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
632 the first were themselves being wrongly included in the feed into dkim
633 processing; with most chunk sizes in use this resulted in an incorrect
634 body hash calculated value.
636 JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
637 DKIM signature block, for verification. Although advised against by
638 standards it is specifically not ruled illegal.
640 JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
642 JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
643 missing a body hash (the bh= tag).
645 JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
646 It seems that HAProxy sends the Proxy Protocol information in clear and
647 only then does a TLS startup, so do the same.
649 JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
650 TCP connections (such as for Spamd) unless the daemon successfully set
651 Fast Open mode on its listening sockets. This fixes breakage seen on
652 too-old kernels or those not configured for Fast Open, at the cost of
653 requiring both directions being enabled for TFO, and TFO never being used
654 by non-daemon-related Exim processes.
656 JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
657 endings, at least on the first header line. Try to canonify any that get
658 past that check, despite the cost.
660 JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
661 now limited to an arbitrary five deep, while parsing addresses with the
662 strip_excess_angle_brackets option enabled.
664 PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
665 instead leave the unprompted TLS handshake in socket buffer for the
666 TLS library to consume.
668 PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
670 PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
672 JH/16 Drop variables when they go out of scope. Memory management drops a whole
673 region in one operation, for speed, and this leaves assigned pointers
674 dangling. Add checks run only under the testsuite which checks all
675 variables at a store-reset and panics on a dangling pointer; add code
676 explicitly nulling out all the variables discovered. Fixes one known
677 bug: a transport crash, where a dangling pointer for $sending_ip_address
678 originally assigned in a verify callout, is re-used.
680 PP/06 Drop '.' from @INC in various Perl scripts.
682 PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
684 PP/08 Reduce a number of compilation warnings under clang; building with
685 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
686 should be warning-free.
688 JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
690 HS/01 Fix portability problems introduced by PP/08 for platforms where
691 realloc(NULL) is not equivalent to malloc() [SunOS et al].
693 HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
694 chunk. This allows us to accept broken chunked messages. We need a more
695 general solution here.
697 PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
698 already-broken messages in the queue.
700 JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
702 JH/19 Fix reference counting bug in routing-generated-address tracking.
708 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
709 supports it and a size is available (ie. the sending peer gave us one).
711 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
712 years of being deprecated). The replacements are the ACLs
713 acl_smtp_mime and acl_not_smtp_mime.
715 JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
716 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
717 or even an in-clear connection were permitted. Now, if the host lookup
718 was dnssec and dane was requested then the host is only used if the
719 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
720 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
721 if one fails this test.
722 This means that a poorly-configured remote DNS will make it incommunicado;
723 but it protects against a DNS-interception attack on it.
725 JH/04 Bug 1810: make continued-use of an open smtp transport connection
726 non-noisy when a race steals the message being considered.
728 JH/05 If main configuration option tls_certificate is unset, generate a
729 self-signed certificate for inbound TLS connections.
731 JH/06 Bug 165: hide more cases of password exposure - this time in expansions
732 in rewrites and routers.
734 JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
735 and logged a warning sing 4.83; now they are a configuration file error.
737 JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
738 (lacking @domain). Apply the same qualification processing as RCPT.
740 JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
742 JH/10 Support ${sha256:} applied to a string (as well as the previous
745 JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
746 a cutthrough deliver is pending, as we always want to make a connection.
747 This also avoids re-routing the message when later placing the cutthrough
748 connection after a verify cache hit.
749 Do not update it with the verify result either.
751 JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
752 when routing results in more than one destination address.
754 JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
755 signing (which inhibits the cutthrough capability). Previously only
756 the presence of an option was tested; now an expansion evaluating as
757 empty is permissible (obviously it should depend only on data available
758 when the cutthrough connection is made).
760 JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
761 the relevant preceding SMTP command did not note the pipelining mode.
763 JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
764 Previously they were not counted.
766 JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
767 as one having no matching records. Previously we deferred the message
768 that needed the lookup.
770 JH/17 Fakereject: previously logged as a normal message arrival "<="; now
771 distinguished as "(=".
773 JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
774 for missing MX records. Previously it only worked for missing A records.
776 JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
778 JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
779 after the data-go-ahead and data-ack. Patch from Jason Betts.
781 JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
782 even for a "none" policy. Patch from Tony Meyer.
784 JH/22 Fix continued use of a connection for further deliveries. If a port was
785 specified by a router, it must also match for the delivery to be
788 JH/23 Bug 1874: fix continued use of a connection for further deliveries.
789 When one of the recipients of a message was unsuitable for the connection
790 (has no matching addresses), we lost track of needing to mark it
791 deferred. As a result mail would be lost.
793 JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
795 JH/25 Decoding ACL controls is now done using a binary search; the source code
796 takes up less space and should be simpler to maintain. Merge the ACL
797 condition decode tables also, with similar effect.
799 JH/26 Fix problem with one_time used on a redirect router which returned the
800 parent address unchanged. A retry would see the parent address marked as
801 delivered, so not attempt the (identical) child. As a result mail would
804 JH/27 Fix a possible security hole, wherein a process operating with the Exim
805 UID can gain a root shell. Credit to http://www.halfdog.net/ for
806 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
809 JH/28 Enable {spool,log} filesystem space and inode checks as default.
810 Main config options check_{log,spool}_{inodes,space} are now
811 100 inodes, 10MB unless set otherwise in the configuration.
813 JH/29 Fix the connection_reject log selector to apply to the connect ACL.
814 Previously it only applied to the main-section connection policy
817 JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
819 PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
820 by me. Added RFC7919 DH primes as an alternative.
822 PP/02 Unbreak build via pkg-config with new hash support when crypto headers
823 are not in the system include path.
825 JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
826 GnuTLS, when a session startup failed (eg because the client disconnected)
827 Exim did stdio operations after fclose. This was exposed by a recent
828 change which nulled out the file handle after the fclose.
830 JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
831 signed directly by the cert-signing cert, rather than an intermediate
832 OCSP-signing cert. This is the model used by LetsEncrypt.
834 JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
836 HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
837 an incoming connection.
839 HS/02 Bug 1802: Do not half-close the connection after sending a request
842 HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
843 fallback to "prime256v1".
845 JH/34 SECURITY: Use proper copy of DATA command in error message.
846 Could leak key material. Remotely exploitable. CVE-2016-9963.
852 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
853 and 3.4.4 - once the server is enabled to respond to an OCSP request
854 it does even when not requested, resulting in a stapling non-aware
855 client dropping the TLS connection.
857 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
858 support variable-length bit vectors. No functional change.
860 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
861 The I= interface field on outgoing lines is now after the H= remote
862 host field, same as incoming lines. There is a separate
863 outgoing_interface log selector which allows you to disable the
866 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
867 If not running log_selector +smtp_connection the mainlog would be held
868 open indefinitely after a "too many connections" event, including to a
869 deleted file after a log rotate. Leave the per net connection logging
870 leaving it open for efficiency as that will be quickly detected by the
871 check on the next write.
873 HS/01 Bug 1671: Fix post transport crash.
874 Processing the wait-<transport> messages could crash the delivery
875 process if the message IDs didn't exist for some reason. When
876 using 'split_spool_directory=yes' the construction of the spool
877 file name failed already, exposing the same netto behaviour.
879 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
880 mime_regex ACL conditions.
882 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
883 to DSN fail messages (bounces): remote IP, remote greeting, remote response
884 to HELO, local diagnostic string.
886 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
887 log line to debug. Even when configured with a tls authenticator many
888 client connections are expected to not authenticate in this way, so
889 an authenticate fail is not an error.
891 HS/02 Add the Exim version string to the process info. This way exiwhat
892 gives some more detail about the running daemon.
894 JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
895 matter for fast-change records such as DNSBLs.
897 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
898 retry record, even if constant. There may be multiple transports with
899 different interface settings and the retry behaviour needs to be kept
902 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
904 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
906 JH/10 Bug 840: fix log_defer_output option of pipe transport
908 JH/11 Bug 830: use same host for all RCPTS of a message, even under
909 hosts_randomize. This matters a lot when combined with mua_wrapper.
911 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
912 ${quote_pgsql:<string>} operator.
914 JH/13 Bug 1708: avoid misaligned access in cached lookup.
916 JH/14 Change header file name for freeradius-client. Relevant if compiling
917 with Radius support; from the Gentoo tree and checked under Fedora.
919 JH/15 Bug 1712: Introduce $prdr_requested flag variable
921 JH/16 Bug 1714: Permit an empty string as expansion result for transport
922 option transport_filter, meaning no filtering.
924 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
926 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
927 defaults to "*" (all hosts). The variable is now available when not built
928 with TLS, default unset, mainly to enable keeping the testsuite sane.
929 If a server certificate is not supplied (via tls_certificate) an error is
930 logged, and clients will find TLS connections fail on startup. Presumably
931 they will retry in-clear.
932 Packagers of Exim are strongly encouraged to create a server certificate
933 at installation time.
935 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
936 with the $config_file variable.
938 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
939 in transport context, after the attempt, and per-recipient. The latter type
940 is per host attempted. The event data is the error message, and the errno
941 information encodes the lookup type (A vs. MX) used for the (first) host,
942 and the trailing two digits of the smtp 4xx response.
944 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
945 to write to mainlog (or rejectlog, paniclog) in the window between file
946 creation and permissions/ownership being changed. Particularly affects
947 installations where exicyclog is run as root, rather than exim user;
948 result is that the running daemon panics and dies.
950 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
952 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
953 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
954 "pri" and "weight". Note that the previous implicit priority given by the
955 list order is no longer honoured.
957 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
960 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
961 by defining SUPPORT_SOCKS.
963 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
964 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
965 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
966 variables are renamed to proxy_{local,external}_{address,port}.
968 JH/27 Move Internationalisation support from Experimental to mainline, enabled
969 for a build by defining SUPPORT_I18N
971 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
972 of the query string, and make ${quote_redis:} do that quoting.
974 JH/29 Move Events support from Experimental to mainline, enabled by default
975 and removable for a build by defining DISABLE_EVENT.
977 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
979 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
980 cached by the daemon.
982 JH/32 Move Redis support from Experimental to mainline, enabled for a build
983 by defining LOOKUP_REDIS. The libhiredis library is required.
985 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
986 keys are given for lookup.
988 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
989 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
990 only supported when built with TLS support. The PolarSSL SHA routines
991 are still used when the TLS library is too old for convenient support.
993 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
994 openssl_options), for security. OpenSSL forces this from version 1.1.0
995 server-side so match that on older versions.
997 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
998 allocation for $value could be released as the expansion processing
999 concluded, but leaving the global pointer active for it.
1001 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
1002 and to use the domains and local_parts ACL conditions.
1004 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
1005 incorrectly not doubled on cutthrough transmission, hence seen as a
1006 body-termination at the receiving system - resulting in truncated mails.
1007 Commonly the sender saw a TCP-level error, and retransmitted the message
1008 via the normal store-and-forward channel. This could result in duplicates
1009 received - but deduplicating mailstores were liable to retain only the
1010 initial truncated version.
1012 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
1014 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1016 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1017 we're in there, support oversigning also; bug 1309.
1019 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1021 HS/04 Add support for keep_environment and add_environment options.
1023 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1024 either intentional arithmetic overflow during PRNG, or testing config-
1027 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1028 delivery resulted in actual delivery. Cancel cutthrough before DATA
1031 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1032 rejects a recipient: pass the reject to the originator.
1034 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1035 Many were false-positives and ignorable, but it's worth fixing the
1038 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1039 for the new environment-manipulation done at startup. Move the routines
1040 from being local to tls.c to being global via the os.c file.
1042 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1043 an extract embedded as result-arg for a map, the first arg for extract
1044 is unavailable so we cannot tell if this is a numbered or keyed
1045 extraction. Accept either.
1051 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1054 JH/02 The smtp transport option "multi_domain" is now expanded.
1056 JH/03 The smtp transport now requests PRDR by default, if the server offers
1059 JH/04 Certificate name checking on server certificates, when exim is a client,
1060 is now done by default. The transport option tls_verify_cert_hostnames
1061 can be used to disable this per-host. The build option
1062 EXPERIMENTAL_CERTNAMES is withdrawn.
1064 JH/05 The value of the tls_verify_certificates smtp transport and main options
1065 default to the word "system" to access the system default CA bundle.
1066 For GnuTLS, only version 3.0.20 or later.
1068 JH/06 Verification of the server certificate for a TLS connection is now tried
1069 (but not required) by default. The verification status is now logged by
1070 default, for both outbound TLS and client-certificate supplying inbound
1073 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1076 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1077 Status Notification (bounce) messages are now MIME format per RFC 3464.
1078 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1079 under the control of the dsn_advertise_hosts option, and routers may
1080 have a dsn_lasthop option.
1082 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1083 default, modifiable by a malware= option. The list separator for
1084 the options can now be changed in the usual way. Bug 68.
1086 JH/10 The smtp_receive_timeout main option is now expanded before use.
1088 JH/11 The incoming_interface log option now also enables logging of the
1089 local interface on delivery outgoing connections.
1091 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1092 if the interface and destination host and port all match.
1094 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1097 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1098 Patch from Andrew Lewis.
1100 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
1101 now supports optional time-restrictions, weighting, and priority
1102 modifiers per server. Patch originally by <rommer@active.by>.
1104 JH/16 The spamd_address main option now supports a mixed list of local
1105 and remote servers. Remote servers can be IPv6 addresses, and
1106 specify a port-range.
1108 JH/17 Bug 68: The spamd_address main option now supports an optional
1109 timeout value per server.
1111 JH/18 Bug 1581: Router and transport options headers_add/remove can
1112 now have the list separator specified.
1114 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
1117 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
1120 JH/21 Support for the A6 type of dns record is withdrawn.
1122 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1123 rather than the verbs used.
1125 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1126 from 255 to 1024 chars.
1128 JH/24 Verification callouts now attempt to use TLS by default.
1130 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
1131 are generic router options now. The defaults didn't change.
1133 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1134 Original patch from Alexander Shikoff, worked over by JH.
1136 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1137 files if ZCAT_COMMAND is not executable.
1139 JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
1141 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1143 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1144 Normally benign, it bites when the pair was led to by a CNAME;
1145 modern usage is to not canonicalize the domain to a CNAME target
1146 (and we were inconsistent anyway for A-only vs AAAA+A).
1148 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1150 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1151 when evaluating $sender_host_dnssec.
1153 JH/31 Check the HELO verification lookup for DNSSEC, adding new
1154 $sender_helo_dnssec variable.
1156 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1158 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1160 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1162 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1163 documented as working, but never had. Support all but $spam_report.
1165 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1166 added for tls authenticator.
1168 HS/03 Add perl_taintmode main config option
1174 TL/01 When running the test suite, the README says that variables such as
1175 no_msglog_check are global and can be placed anywhere in a specific
1176 test's script, however it was observed that placement needed to be near
1177 the beginning for it to behave that way. Changed the runtest perl
1178 script to read through the entire script once to detect and set these
1179 variables, reset to the beginning of the script, and then run through
1180 the script parsing/test process like normal.
1182 TL/02 The BSD's have an arc4random API. One of the functions to induce
1183 adding randomness was arc4random_stir(), but it has been removed in
1184 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1185 function when detected.
1187 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1188 cause callback expansion.
1190 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1191 syntax errors in an expansion can be treated as a string instead of
1192 logging or causing an error, due to the internal use of bool_lax
1193 instead of bool when processing it.
1195 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
1196 server certificates when making smtp deliveries.
1198 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1200 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1202 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1204 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1205 Merged patch from Sebastian Wiedenroth.
1207 JH/05 Fix results-pipe from transport process. Several recipients, combined
1208 with certificate use, exposed issues where response data items split
1209 over buffer boundaries were not parsed properly. This eventually
1210 resulted in duplicates being sent. This issue only became common enough
1211 to notice due to the introduction of connection certificate information,
1212 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1214 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1215 size buffer was used, resulting in syntax errors when an expansion
1218 JH/07 Add support for directories of certificates when compiled with a GnuTLS
1219 version 3.3.6 or later.
1221 JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
1222 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1223 both become "event_action", the variables become $event_name, $event_data
1224 and $event_defer_errno. There is a new variable $verify_mode, usable in
1225 routers, transports and related events. The tls:cert event is now also
1226 raised for inbound connections, if the main configuration event_action
1229 TL/06 In test suite, disable OCSP for old versions of openssl which contained
1230 early OCSP support, but no stapling (appears to be less than 1.0.0).
1232 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1233 server certificate names available under the smtp transport option
1234 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1237 JH/10 Time-related extraction expansions from certificates now use the main
1238 option "timezone" setting for output formatting, and are consistent
1239 between OpenSSL and GnuTLS compilations. Bug 1541.
1241 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1242 encoded parameter in the incoming message. Bug 1558.
1244 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1245 include certificate info, eximon was claiming there were spoolfile
1248 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
1250 JH/14 Log delivery-related information more consistently, using the sequence
1251 "H=<name> [<ip>]" wherever possible.
1253 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1254 are problematic for Debian distribution, omit them from the release
1257 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1259 JH/16 Fix string representation of time values on 64bit time_t architectures.
1262 JH/17 Fix a null-indirection in certextract expansions when a nondefault
1263 output list separator was used.
1268 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1269 checkers that were complaining about end of non-void function with no
1272 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
1273 This was a regression introduced in 4.83 by another bugfix.
1275 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1277 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
1278 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
1284 TF/01 Correctly close the server side of TLS when forking for delivery.
1286 When a message was received over SMTP with TLS, Exim failed to clear up
1287 the incoming connection properly after forking off the child process to
1288 deliver the message. In some situations the subsequent outgoing
1289 delivery connection happened to have the same fd number as the incoming
1290 connection previously had. Exim would try to use TLS and fail, logging
1291 a "Bad file descriptor" error.
1293 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1294 utilities have not been installed.
1296 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1297 temporary space as the ACL may create new global variables.
1299 TL/01 LDAP support uses per connection or global context settings, depending
1300 upon the detected version of the libraries at build time.
1302 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1303 to extract and use the src ip:port in logging and expansions as if it
1304 were a direct connection from the outside internet. PPv2 support was
1305 updated based on HAProxy spec change in May 2014.
1307 JH/02 Add ${listextract {number}{list}{success}{fail}}.
1309 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1310 Properly escape header and check for NULL return.
1312 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1315 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1317 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1318 characters in header names, implemented as a verify condition.
1319 Contributed by Michael Fischer v. Mollard.
1321 TL/05 Rename SPF condition results err_perm and err_temp to standardized
1322 results permerror and temperror. Previous values are deprecated but
1323 still accepted. In a future release, err_perm and err_temp will be
1324 completely removed, which will be a backward incompatibility if the
1325 ACL tests for either of these two old results. Patch contributed by
1326 user bes-internal on the mailing list.
1328 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1330 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1331 selectors, in both main and reject logs.
1333 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1336 JH/07 Add malware type "sock" for talking to simple daemon.
1338 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
1340 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1341 routers/transports under cutthrough routing.
1343 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1344 numbers. Touch up "bool" conditional to keep the same definition.
1346 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1348 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1350 JH/12 Expand items in router/transport headers_add or headers_remove lists
1351 individually rather than the list as a whole. Bug 1452.
1353 Required for reasonable handling of multiple headers_ options when
1354 they may be empty; requires that headers_remove items with embedded
1355 colons must have them doubled (or the list-separator changed).
1357 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1358 view the policy declared in the DMARC record. Currently, $dmarc_status
1359 is a combined value of both the record presence and the result of the
1362 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1364 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
1365 dnslookup router and the smtp transport (applying to the forward
1368 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1369 of ldap servers used for a specific lookup. Patch provided by Heiko
1372 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
1373 New variable $lookup_dnssec_authenticated for observability.
1375 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1376 Patch submitted by Lars Timman.
1378 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1380 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1381 Requires trusted mode and valid format message id, aborts otherwise.
1382 Patch contributed by Heiko Schlichting.
1384 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1385 certextract with support for various fields. Bug 1358.
1387 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1388 is requested by default, modifiable by smtp transport option
1391 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
1392 operate on certificate variables to give certificate fingerprints
1393 Also new ${sha256:cert_variable}.
1395 JH/23 The PRDR feature is moved from being Experimental into the mainline.
1397 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1398 Christian Aistleitner.
1400 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1402 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1403 file. Patch from Wolfgang Breyha.
1405 JH/25 Expand the coverage of the delivery $host and $host_address to
1406 client authenticators run in verify callout. Bug 1476.
1408 JH/26 Port service names are now accepted for tls_on_connect_ports, to
1409 align with daemon_smtp_ports. Bug 72.
1411 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1412 support and error reporting did not work properly.
1414 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1415 and is readable. Patch from Andrew Colin Kissa.
1417 TL/14 Enhance documentation of ${run expansion and how it parses the
1418 commandline after expansion, particularly in the case when an
1419 unquoted variable expansion results in an empty value.
1421 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1423 PP/02 Fix internal collision of T_APL on systems which support RFC3123
1424 by renaming away from it. Addresses GH issue 15, reported by
1427 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1429 TL/15 SECURITY: prevent double expansion in math comparison functions
1430 (can expand unsanitized data). Not remotely exploitable.
1437 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1439 PP/02 Make -n do something, by making it not do something.
1440 When combined with -bP, the name of an option is not output.
1442 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1445 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1446 $sender_host_name and config options to manage this, and basic check
1449 PP/05 DSCP support for outbound connections and control modifier for inbound.
1451 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
1452 (Only plugin which currently uses this is kerberos4, which nobody should
1453 be using, but we should make it available and other future plugins might
1454 conceivably use it, even though it would break NAT; stuff *should* be
1455 using channel bindings instead).
1457 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
1458 name; added for Sendmail compatibility; requires admin caller.
1459 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1460 just ignore it); requires trusted caller.
1461 Also parse but ignore: -Ac -Am -X<logfile>
1464 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
1466 TL/02 Add +smtp_confirmation as a default logging option.
1468 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1469 Patch by Magnus Holmgren from 2007-02-20.
1471 TL/04 Bugzilla 1281 - Spec typo.
1472 Bugzilla 1283 - Spec typo.
1473 Bugzilla 1290 - Spec grammar fixes.
1475 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
1477 TL/06 Add Experimental DMARC support using libopendmarc libraries.
1479 TL/07 Fix an out of order global option causing a segfault. Reported to dev
1480 mailing list by by Dmitry Isaikin.
1482 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1484 JH/02 Support "G" suffix to numbers in ${if comparisons.
1486 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1488 NM/01 Bugzilla 1197 - Spec typo
1489 Bugzilla 1196 - Spec examples corrections
1491 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
1493 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1494 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1497 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1498 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1500 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1501 "acl {{name}{arg}...}", and optional args on acl condition
1504 JH/05 Permit multiple router/transport headers_add/remove lines.
1506 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1508 JH/07 Avoid using a waiting database for a single-message-only transport.
1509 Performance patch from Paul Fisher. Bugzilla 1262.
1511 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1514 JH/09 Add $headers_added variable, with content from use of ACL modifier
1515 add_header (but not yet added to the message). Bugzilla 199.
1517 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1518 Pulled from Bugzilla 817 by Wolfgang Breyha.
1520 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1522 (nb: this is the same fix as in Exim 4.80.1)
1524 JH/11 Add A= logging on delivery lines, and a client_set_id option on
1527 JH/12 Add optional authenticated_sender logging to A= and a log_selector
1530 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1532 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1533 advertise SMTP AUTH mechanism to us, instead of a generic
1534 protocol violation error. Also, make Exim more robust to bad
1535 data from the Dovecot auth socket.
1537 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1539 When a queue runner is handling a message, Exim first routes the
1540 recipient addresses, during which it prunes them based on the retry
1541 hints database. After that it attempts to deliver the message to
1542 any remaining recipients. It then updates the hints database using
1545 So if a recipient address works intermittently, it can get repeatedly
1546 deferred at routing time. The retry hints record remains fresh so the
1547 address never reaches the final cutoff time.
1549 This is a fairly common occurrence when a user is bumping up against
1550 their storage quota. Exim had some logic in its local delivery code
1551 to deal with this. However it did not apply to per-recipient defers
1552 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1554 This change adds a proper retry rule check during routing so that the
1555 final cutoff time is checked against the message's age. We only do
1556 this check if there is an address retry record and there is not a
1557 domain retry record; this implies that previous attempts to handle
1558 the address had the retry_use_local_parts option turned on. We use
1559 this as an approximation for the destination being like a local
1560 delivery, as in LMTP.
1562 I suspect this new check makes the old local delivery cutoff check
1563 redundant, but I have not verified this so I left the code in place.
1565 TF/02 Correct gecos expansion when From: is a prefix of the username.
1567 Test 0254 submits a message to Exim with the header
1571 When I ran the test suite under the user fanf2, Exim expanded
1572 the header to contain my full name, whereas it should have added
1573 a Resent-Sender: header. It erroneously treats any prefix of the
1574 username as equal to the username.
1576 This change corrects that bug.
1578 GF/01 DCC debug and logging tidyup
1579 Error conditions log to paniclog rather than rejectlog.
1580 Debug lines prefixed by "DCC: " to remove any ambiguity.
1582 TF/03 Avoid unnecessary rebuilds of lookup-related code.
1584 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1585 Bug spotted by Jeremy Harris; was flawed since initial commit.
1586 Would have resulted in OCSP responses post-SNI triggering an Exim
1587 NULL dereference and crash.
1589 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1591 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1592 Bug detection, analysis and fix by Samuel Thibault.
1593 Bugzilla 1331, Debian bug #698092.
1595 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1597 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1598 Server implementation by Todd Lyons, client by JH.
1599 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1600 config variable "prdr_enable" controls whether the server
1601 advertises the facility. If the client requests PRDR a new
1602 acl_data_smtp_prdr ACL is called once for each recipient, after
1603 the body content is received and before the acl_smtp_data ACL.
1604 The client is controlled by both of: a hosts_try_prdr option
1605 on the smtp transport, and the server advertisement.
1606 Default client logging of deliveries and rejections involving
1607 PRDR are flagged with the string "PRDR".
1609 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1610 fclose(). Diagnosis by Todd Lyons.
1612 PP/17 Update configure.default to handle IPv6 localhost better.
1613 Patch by Alain Williams (plus minor tweaks).
1616 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1617 This is now consistent with GnuTLS, and is now documented: the
1618 previous undocumented portable approach to treating the option as
1619 unset was to force an expansion failure. That still works, and
1620 an empty string is now equivalent.
1622 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1623 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1624 not performing validation itself.
1626 PP/20 Added force_command boolean option to pipe transport.
1627 Patch from Nick Koston, of cPanel Inc.
1629 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1632 TF/04 Added udpsend ACL modifier and hexquote expansion operator
1634 PP/21 Fix eximon continuous updating with timestamped log-files.
1635 Broken in a format-string cleanup in 4.80, missed when I repaired the
1636 other false fix of the same issue.
1637 Report and fix from Heiko Schlichting.
1640 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1641 Report from Prashanth Katuri.
1643 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1644 It's SecureTransport, so affects any MacOS clients which use the
1645 system-integrated TLS libraries, including email clients.
1647 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1648 using a MIME ACL for non-SMTP local injection.
1649 Report and assistance in diagnosis by Warren Baker.
1651 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1653 JH/16 Fix comparisons for 64b. Bugzilla 1385.
1655 TL/09 Add expansion variable $authenticated_fail_id to keep track of
1656 last id that failed so it may be referenced in subsequent ACL's.
1658 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1661 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1662 ldap library initialization, allowing self-signed CA's to be
1663 used. Also properly sets require_cert option later in code by
1664 using NULL (global ldap config) instead of ldap handle (per
1665 session). Bug diagnosis and testing by alxgomz.
1667 TL/12 Enhanced documentation in the ratelimit.pl script provided in
1668 the src/util/ subdirectory.
1670 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1671 renamed to Transport Post Delivery Action by Jeremy Harris, as
1674 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1675 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1676 redis_servers = needs to be configured which will be used by the redis
1677 lookup. Patch from Warren Baker, of The Packet Hub.
1679 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1681 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1682 hostname or reverse DNS when processing a host list. Used suggestions
1683 from multiple comments on this bug.
1685 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1687 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1688 Missed a few lines, added it to make the runtest require no keyboard
1691 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1692 contains upper case chars. Make router use caseful_local_part.
1694 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1695 support when GnuTLS has been built with p11-kit.
1701 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1703 This, or similar/improved, will also be change PP/11 of 4.82.
1709 PP/01 Handle short writes when writing local log-files.
1710 In practice, only affects FreeBSD (8 onwards).
1711 Bugzilla 1053, with thanks to Dmitry Isaikin.
1713 NM/01 Bugzilla 949 - Documentation tweak
1715 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1718 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1720 PP/02 Implemented gsasl authenticator.
1722 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1724 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1725 `pkg-config foo` for cflags/libs.
1727 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1728 with rest of GSASL and with heimdal_gssapi.
1730 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1731 `pkg-config foo` for cflags/libs for the TLS implementation.
1733 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
1734 properties get this fed in as external SSF. A number of robustness
1735 and debugging improvements to the cyrus_sasl authenticator.
1737 PP/08 cyrus_sasl server now expands the server_realm option.
1739 PP/09 Bugzilla 1214 - Log authentication information in reject log.
1740 Patch by Jeremy Harris.
1742 PP/10 Added dbmjz lookup type.
1744 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
1746 PP/12 MAIL args handles TAB as well as SP, for better interop with
1747 non-compliant senders.
1748 Analysis and variant patch by Todd Lyons.
1750 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
1751 Bug report from Lars Müller <lars@samba.org> (via SUSE),
1752 Patch from Dirk Mueller <dmueller@suse.com>
1754 PP/13 tls_peerdn now print-escaped for spool files.
1755 Observed some $tls_peerdn in wild which contained \n, which resulted
1756 in spool file corruption.
1758 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1759 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1760 or write after TLS renegotiation, which otherwise led to messages
1763 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1764 as a tracking header (ie: a signed header comes before the signature).
1765 Patch from Wolfgang Breyha.
1767 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1768 comma-sep list; embedded commas doubled.
1770 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1772 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1774 Report and patch from Dmitry Banschikov.
1776 PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
1777 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1778 failures. We appear to now support TLS1.1+ with Exim.
1780 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1781 lets Exim select keys and certificates based upon TLS SNI from client.
1782 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1783 before an outbound SMTP session. New log_selector, +tls_sni.
1785 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1786 NULL dereference. Report and patch from Alun Jones.
1788 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1789 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1790 Not seeing resolver debug output on NetBSD, but suspect this is a
1791 resolver implementation change.
1793 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1794 Left warnings. Added "eximon gdb" invocation mode.
1796 PP/21 Defaulting "accept_8bitmime" to true, not false.
1798 PP/22 Added -bw for inetd wait mode support.
1800 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1801 locate the relevant includes and libraries. Made this the default.
1803 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1804 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1806 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
1807 This may cause build issues on older platforms.
1809 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1810 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1811 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1812 Added SNI support via GnuTLS too.
1813 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
1815 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
1817 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
1818 Applied second patch from Janne, implementing suggestion to default
1819 multiple-strings-in-record handling to match SPF spec.
1821 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
1823 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1824 read-only, out of scope).
1825 Patch from Wolfgang Breyha, report from Stuart Northfield.
1827 PP/29 Fix three issues highlighted by clang analyser static analysis.
1828 Only crash-plausible issue would require the Cambridge-specific
1829 iplookup router and a misconfiguration.
1830 Report from Marcin Mirosław.
1832 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1834 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1835 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1836 As part of this, removing so much warning spew let me fix some minor
1837 real issues in debug logging.
1839 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1840 assignment on my part. Fixed.
1842 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1843 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1844 Janne Snabb (who went above and beyond: thank you).
1846 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1847 string otherwise requires a connection and a bunch more work and it's
1848 relatively easy to get wrong. Should also expose TLS library linkage
1851 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1852 64-bit ${eval} (JH/03).
1854 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
1855 GNU libc to support some of the 64-bit stuff, should not lead to
1856 conflicts. Defined before os.h is pulled in, so if a given platform
1857 needs to override this, it can.
1859 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1860 protection layer was required, which is not implemented.
1861 Bugzilla 1254, patch from Wolfgang Breyha.
1863 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1864 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1865 tls_dhparam take prime identifiers. Also unbreak combination of
1866 OpenSSL+DH_params+TLSSNI.
1868 PP/39 Disable SSLv2 by default in OpenSSL support.
1874 PP/01 Solaris build fix for Oracle's LDAP libraries.
1875 Bugzilla 1109, patch from Stephen Usher.
1877 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1879 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1882 TF/02 Fix a couple more cases where we did not log the error message
1883 when unlink() failed. See also change 4.74-TF/03.
1885 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1886 lock up or crash if it happened to be inside a call to libc when it
1887 got a SIGUSR1 from exiwhat.
1889 The SIGUSR1 handler appends the current process status to the process
1890 log which is later printed by exiwhat. It used to use the general
1891 purpose logging code to do this, but several functions it calls are
1892 not safe for signals.
1894 The new output code in the SIGUSR1 handler is specific to the process
1895 log, and simple enough that it's easy to inspect for signal safety.
1896 Removing some special cases also simplifies the general logging code.
1897 Removing the spurious timestamps from the process log simplifies
1900 TF/04 Improved ratelimit ACL condition.
1902 The /noupdate option has been deprecated in favour of /readonly which
1903 has clearer semantics. The /leaky, /strict, and /readonly update modes
1904 are mutually exclusive. The update mode is no longer included in the
1905 database key; it just determines when the database is updated. (This
1906 means that when you upgrade Exim will forget old rate measurements.)
1908 Exim now checks that the per_* options are used with an update mode that
1909 makes sense for the current ACL. For example, when Exim is processing a
1910 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1911 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1912 must specify per_mail/readonly. If you omit the update mode it defaults to
1913 /leaky where that makes sense (as before) or /readonly where required.
1915 The /noupdate option is now undocumented but still supported for
1916 backwards compatibility. It is equivalent to /readonly except that in
1917 ACLs where /readonly is required you may specify /leaky/noupdate or
1918 /strict/noupdate which are treated the same as /readonly.
1920 A useful new feature is the /count= option. This is a generalization
1921 of the per_byte option, so that you can measure the throughput of other
1922 aggregate values. For example, the per_byte option is now equivalent
1923 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1925 The per_rcpt option has been generalized using the /count= mechanism
1926 (though it's more complicated than the per_byte equivalence). When it is
1927 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1928 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1929 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1930 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1931 Note that using per_rcpt with a non-readonly update mode in more than
1932 one ACL will cause the recipients to be double-counted. (The per_mail
1933 and per_byte options don't have this problem.)
1935 The handling of very low rates has changed slightly. If the computed rate
1936 is less than the event's count (usually one) then this event is the first
1937 after a long gap. In this case the rate is set to the same as this event's
1938 count, so that the first message of a spam run is counted properly.
1940 The major new feature is a mechanism for counting the rate of unique
1941 events. The new per_addr option counts the number of different
1942 recipients that someone has sent messages to in the last time period. It
1943 behaves like per_rcpt if all the recipient addresses are different, but
1944 duplicate recipient addresses do not increase the measured rate. Like
1945 the /count= option this is a general mechanism, so the per_addr option
1946 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1947 example, measure the rate that a client uses different sender addresses
1948 with the options per_mail/unique=$sender_address. There are further
1949 details in the main documentation.
1951 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1953 TF/06 Removed a few PCRE remnants.
1955 TF/07 Automatically extract Exim's version number from tags in the git
1956 repository when doing development or release builds.
1958 PP/02 Raise smtp_cmd_buffer_size to 16kB.
1959 Bugzilla 879. Patch from Paul Fisher.
1961 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1962 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1965 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
1967 PP/05 Variable $av_failed, true if the AV scanner deferred.
1968 Bugzilla 1078. Patch from John Horne.
1970 PP/06 Stop make process more reliably on build failure.
1971 Bugzilla 1087. Patch from Heiko Schlittermann.
1973 PP/07 Make maildir_use_size_file an _expandable_ boolean.
1974 Bugzilla 1089. Patch from Heiko Schlittermann.
1976 PP/08 Handle ${run} returning more data than OS pipe buffer size.
1977 Bugzilla 1131. Patch from Holger Weiß.
1979 PP/09 Handle IPv6 addresses with SPF.
1980 Bugzilla 860. Patch from Wolfgang Breyha.
1982 PP/10 GnuTLS: support TLS 1.2 & 1.1.
1984 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1987 PP/11 match_* no longer expand right-hand-side by default.
1988 New compile-time build option, EXPAND_LISTMATCH_RHS.
1989 New expansion conditions, "inlist", "inlisti".
1991 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
1993 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
1995 PP/14 fix log_write() format string regression from TF/03.
1996 Bugzilla 1152. Patch from Dmitry Isaikin.
2002 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
2004 PP/02 Harmonised TLS library version reporting; only show if debugging.
2005 Layout now matches that introduced for other libraries in 4.74 PP/03.
2007 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
2009 PP/04 New "dns_use_edns0" global option.
2011 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2014 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2015 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
2017 TK/01 Updated PolarSSL code to 0.14.2.
2018 Bugzilla 1097. Patch from Andreas Metzler.
2020 PP/07 Catch divide-by-zero in ${eval:...}.
2021 Fixes bugzilla 1102.
2023 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2026 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
2027 format-string attack -- SECURITY: remote arbitrary code execution.
2029 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2030 time unintentionally subject to list matching rules, letting the header
2031 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2032 arbitrary string expansion). This allowed for information disclosure.
2034 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2035 INT_MIN/-1 -- value coerced to INT_MAX.
2041 NM/01 Workaround for PCRE version dependency in version reporting
2044 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2045 This fixes portability to compilers other than gcc, notably
2046 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2048 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2049 makefiles for portability to HP-UX and POSIX correctness.
2051 PP/01 Permit LOOKUP_foo enabling on the make command-line.
2052 Also via indented variable definition in the Makefile.
2053 (Debugging by Oliver Heesakkers).
2055 PP/02 Restore caching of spamd results with expanded spamd_address.
2056 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2058 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2059 Improves build reliability. Fix from: Frank Elsner
2061 NM/02 Fix wide character breakage in the rfc2047 coding
2062 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2064 NM/03 Allow underscore in dnslist lookups
2065 Fixes bug 1026. Patch from Graeme Fowler
2067 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2068 Code patches from Adam Ciarcinski of NetBSD.
2070 NM/04 Fixed exiqgrep to cope with mailq missing size issue
2073 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2074 is logged, to avoid truncation. Patch from John Horne.
2076 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2077 Patch from Jakob Hirsch.
2079 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2080 SQL string expansion failure details.
2081 Patch from Andrey Oktyabrski.
2083 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2084 Patch from Simon Arlott.
2086 PP/09 New lookups functionality failed to compile on old gcc which rejects
2087 extern declarations in function scope.
2088 Patch from Oliver Fleischmann
2090 PP/10 Use sig_atomic_t for flags set from signal handlers.
2091 Check getgroups() return and improve debugging.
2092 Fixed developed for diagnosis in bug 927 (which turned out to be
2095 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2096 Patch from Mark Zealey.
2098 PP/12 Bugzilla 1056: Improved spamd server selection.
2099 Patch from Mark Zealey.
2101 PP/13 Bugzilla 1086: Deal with maildir quota file races.
2102 Based on patch from Heiko Schlittermann.
2104 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2105 Patch from Uwe Doering, sign-off by Michael Haardt.
2107 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2108 variable declaration deep within a block. Bug and patch from
2111 PP/15 lookups-Makefile IRIX compatibility coercion.
2113 PP/16 Make DISABLE_DKIM build knob functional.
2115 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2116 Patch by Simon Arlott
2118 TF/03 Fix valgrind.h portability to C89 compilers that do not support
2119 variable argument macros. Our copy now differs from upstream.
2125 TF/01 Failure to get a lock on a hints database can have serious
2126 consequences so log it to the panic log.
2128 TF/02 Log LMTP confirmation messages in the same way as SMTP,
2129 controlled using the smtp_confirmation log selector.
2131 TF/03 Include the error message when we fail to unlink a spool file.
2133 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2134 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2135 for maintaining out-of-tree patches for some time.
2137 PP/01 Bugzilla 139: Documentation and portability issues.
2138 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2139 Handle per-OS dynamic-module compilation flags.
2141 PP/02 Let /dev/null have normal permissions.
2142 The 4.73 fixes were a little too stringent and complained about the
2143 permissions on /dev/null. Exempt it from some checks.
2144 Reported by Andreas M. Kirchwitz.
2146 PP/03 Report version information for many libraries, including
2147 Exim version information for dynamically loaded libraries. Created
2148 version.h, now support a version extension string for distributors
2149 who patch heavily. Dynamic module ABI change.
2151 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2152 privilege escalation vulnerability whereby the Exim run-time user
2153 can cause root to append content of the attacker's choosing to
2156 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2159 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2160 If dropping privileges for untrusted macros, we disabled normal logging
2161 on the basis that it would fail; for the Exim run-time user, this is not
2162 the case, and it resulted in successful deliveries going unlogged.
2163 Fixed. Reported by Andreas Metzler.
2169 PP/01 Date: & Message-Id: revert to normally being appended to a message,
2170 only prepend for the Resent-* case. Fixes regression introduced in
2171 Exim 4.70 by NM/22 for Bugzilla 607.
2173 PP/02 Include check_rfc2047_length in configure.default because we're seeing
2174 increasing numbers of administrators be bitten by this.
2176 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2178 PP/03 Bugzilla 994: added openssl_options main configuration option.
2180 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2182 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
2184 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2186 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
2187 without a peer certificate, leading to a segfault because of an
2188 assumption that peers always have certificates. Be a little more
2189 paranoid. Problem reported by Martin Tscholak.
2191 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2192 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2193 NB: ClamAV planning to remove STREAM in "middle of 2010".
2194 CL also introduces -bmalware, various -d+acl logging additions and
2195 more caution in buffer sizes.
2197 PP/09 Implemented reverse_ip expansion operator.
2199 PP/10 Bugzilla 937: provide a "debug" ACL control.
2201 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2203 PP/12 Bugzilla 973: Implement --version.
2205 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2207 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2209 PP/15 Bugzilla 816: support multiple condition rules on Routers.
2211 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
2212 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2213 ignore trailing whitespace.
2215 JJ/02 prevent non-panic DKIM error from being sent to paniclog
2217 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2220 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2221 Notification from Dr Andrew Aitchison.
2223 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2224 ExtendedDetectionInfo response format.
2225 Notification from John Horne.
2227 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2230 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2231 XSL and documented dependency on system catalogs, with examples of how
2234 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2237 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2238 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2239 configuration file which is writeable by the Exim user or group.
2241 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2242 of configuration files to cover files specified with the -C option if
2243 they are going to be used with root privileges, not just the default
2246 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2247 option (effectively making it always true).
2249 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2250 files to be used while preserving root privileges.
2252 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2253 that rogue child processes cannot use them.
2255 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2256 run-time user, instead of root.
2258 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2259 Exim run-time user without dropping privileges.
2261 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2262 result string, instead of calling string_vformat() twice with the same
2265 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2266 for other users. Others should always drop root privileges if they use
2267 -C on the command line, even for a whitelisted configure file.
2269 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2271 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2277 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2278 $data_path, and $header_path variables; fixed documentation bugs and
2281 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2282 exipick to access non-standard spools, including the "frozen" queue
2285 NM/01 Bugzilla 965: Support mysql stored procedures.
2286 Patch from Alain Williams
2288 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2290 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2291 Patch from Andreas Metzler
2293 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2294 Patch from Kirill Miazine
2296 NM/05 Bugzilla 671: Added umask to procmail example.
2298 JJ/03 installed exipick 20100323.0, fixing doc bug
2300 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
2301 directory. Notification and patch from Dan Rosenberg.
2303 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2305 TK/02 Improve log output when DKIM signing operation fails.
2307 MH/01 Treat the transport option dkim_domain as a colon separated
2308 list, not as a single string, and sign the message with each element,
2309 omitting multiple occurences of the same signer.
2311 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2312 Bugzilla 985, 986. Patch by Simon Arlott
2314 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
2315 Patch by Simon Arlott
2317 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
2318 MBX locking. Notification from Dan Rosenberg.
2324 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
2326 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2328 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2330 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2332 NM/04 Bugzilla 915: Flag broken perl installation during build.
2338 TK/01 Added patch by Johannes Berg that expands the main option
2339 "spamd_address" if it starts with a dollar sign.
2341 TK/02 Write list of recipients to X-Envelope-Sender header when building
2342 the mbox-format spool file for content scanning (suggested by Jakob
2345 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2346 (http://www.dcc-servers.net/) support via dccifd. Activated by
2347 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
2349 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2350 by Mark Daniel Reidel <mr@df.eu>.
2352 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2353 When building exim an external PCRE library is now needed -
2354 PCRE is a system library on the majority of modern systems.
2355 See entry on PCRE_LIBS in EDITME file.
2357 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2358 conversation. Added nologin parameter to request.
2359 Patch contributed by Kirill Miazine.
2361 TF/01 Do not log submission mode rewrites if they do not change the address.
2363 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2365 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
2366 log files in place. Contributed by Roberto Lima.
2368 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
2370 TF/03 Bugzilla 615: When checking the local_parts router precondition
2371 after a local_part_suffix or local_part_prefix option, Exim now
2372 does not use the address's named list lookup cache, since this
2373 contains cached lookups for the whole local part.
2375 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
2376 Robert Millan. Documentation is in experimental-spec.txt.
2378 TF/04 Bugzilla 668: Fix parallel build (make -j).
2380 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
2382 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
2383 Patch provided by Jan Srzednicki.
2385 TF/05 Leading white space used to be stripped from $spam_report which
2386 wrecked the formatting. Now it is preserved.
2388 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2389 that they are available at delivery time.
2391 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2393 TF/08 TLS error reporting now respects the incoming_interface and
2394 incoming_port log selectors.
2396 TF/09 Produce a more useful error message if an SMTP transport's hosts
2397 setting expands to an empty string.
2399 NM/06 Bugzilla 744: EXPN did not work under TLS.
2400 Patch provided by Phil Pennock.
2402 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
2403 Patch provided by Richard Godbee.
2405 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
2406 acl_smtp_notquit, added index entry.
2408 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2409 Patch provided by Eugene Bujak.
2411 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2412 accept(). Patch provided by Maxim Dounin.
2414 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
2415 Patch provided by Phil Pennock.
2417 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2419 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
2420 Patch provided by Brad "anomie" Jorsch.
2422 NM/14 Bugzilla 622: Added timeout setting to transport filter.
2423 Patch provided by Dean Brooks.
2425 TK/05 Add native DKIM support (does not depend on external libraries).
2427 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
2428 Patch provided by Graeme Fowler.
2430 NM/16 Bugzilla 851: Documentation example syntax fix.
2432 NM/17 Changed NOTICE file to remove references to embedded PCRE.
2434 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2437 NM/19 Bugzilla 745: TLS version reporting.
2438 Patch provided by Phil Pennock.
2440 NM/20 Bugzilla 167: bool: condition support.
2441 Patch provided by Phil Pennock.
2443 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2444 clients. Patch provided by Phil Pennock.
2446 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2447 Patch provided by Brad "anomie" Jorsch.
2449 NM/23 Bugzilla 687: Fix misparses in eximstats.
2450 Patch provided by Heiko Schlittermann.
2452 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2453 Patch provided by Heiko Schlittermann.
2455 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
2456 plus update to original patch.
2458 NM/26 Bugzilla 799: Documentation correction for ratelimit.
2460 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2461 Patch provided by David Brownlee.
2463 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
2465 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
2467 NM/30 Bugzilla 888: TLS documentation bugfixes.
2469 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
2471 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
2472 Unlike the original bugzilla I have changed all shell scripts in src tree.
2474 NM/33 Bugzilla 898: Transport filter timeout fix.
2475 Patch by Todd Rinaldo.
2477 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
2478 Patch by Serge Demonchaux.
2480 NM/35 Bugzilla 39: Base64 decode bug fixes.
2481 Patch by Jakob Hirsch.
2483 NM/36 Bugzilla 909: Correct connect() call in dcc code.
2485 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
2487 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
2489 NM/39 Bugzilla 911: Fixed MakeLinks build script.
2495 TK/01 Add preliminary DKIM support. Currently requires a forked version of
2496 ALT-N's libdkim that I have put here:
2497 http://duncanthrax.net/exim-experimental/
2499 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2500 were called 'true' and it seems that C99 defines that as a reserved
2501 keyword to be used with 'bool' variable types. That means you could
2502 not include C99-style headers which use bools without triggering
2503 build errors in sieve.c.
2505 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2506 as mailq or other aliases. Changed the --help handling significantly
2507 to do whats expected. exim_usage() emits usage/help information.
2509 SC/01 Added the -bylocaldomain option to eximstats.
2511 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
2513 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
2515 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
2521 PH/01 Another patch from the Sieve maintainer.
2523 PH/02 When an IPv6 address is converted to a string for single-key lookup
2524 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2525 dots are used instead of colons so that keys in lsearch files need not
2526 contain colons. This was done some time before quoting was made available
2527 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2528 (notated using the quote facility) so as to distinguish them from IPv4
2529 keys. This meant that lookups for IP addresses in host lists did not work
2530 for iplsearch lookups.
2532 This has been fixed by arranging for IPv6 addresses to be expressed with
2533 colons if the lookup type is iplsearch. This is not incompatible, because
2534 previously such lookups could never work.
2536 The situation is now rather anomalous, since one *can* have colons in
2537 ordinary lsearch keys. However, making the change in all cases is
2538 incompatible and would probably break a number of configurations.
2540 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2543 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2544 conversion specification without a maximum field width, thereby enabling
2545 a rogue spamd server to cause a buffer overflow. While nobody in their
2546 right mind would setup Exim to query an untrusted spamd server, an
2547 attacker that gains access to a server running spamd could potentially
2548 exploit this vulnerability to run arbitrary code as the Exim user.
2550 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2551 $primary_hostname instead of what libspf2 thinks the hosts name is.
2553 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2554 a directory entry by the name of the lookup key. Previously, if a
2555 symlink pointed to a non-existing file or a file in a directory that
2556 Exim lacked permissions to read, a lookup for a key matching that
2557 symlink would fail. Now it is enough that a matching directory entry
2558 exists, symlink or not. (Bugzilla 503.)
2560 PH/03 The body_linecount and body_zerocount variables are now exported in the
2563 PH/04 Added the $dnslist_matched variable.
2565 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2566 This means they are set thereafter only if the connection becomes
2569 PH/06 Added the client_condition to authenticators so that some can be skipped
2570 by clients under certain conditions.
2572 PH/07 The error message for a badly-placed control=no_multiline_responses left
2573 "_responses" off the end of the name.
2575 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2577 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2578 (without spaces) instead of just copying the configuration text.
2580 PH/10 Added the /noupdate option to the ratelimit ACL condition.
2582 PH/11 Added $max_received_linelength.
2584 PH/12 Added +ignore_defer and +include_defer to host lists.
2586 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2587 way in which PCRE > 7.0 is built.
2589 PH/14 Implemented queue_only_load_latch.
2591 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2592 MAIL command. The effect was to mangle the value on 64-bit systems.
2594 PH/16 Another patch from the Sieve maintainer.
2596 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2598 PH/18 If a system quota error occurred while trying to create the file for
2599 a maildir delivery, the message "Mailbox is full" was not appended to the
2600 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2601 only to a quota excession during the actual writing of the file.
2603 PH/19 It seems that peer DN values may contain newlines (and other non-printing
2604 characters?) which causes problems in log lines. The DN values are now
2605 passed through string_printing() before being added to log lines.
2607 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
2608 and InterBase are left for another time.)
2610 PH/21 Added message_body_newlines option.
2612 PH/22 Guard against possible overflow in moan_check_errorcopy().
2614 PH/23 POSIX allows open() to be a macro; guard against that.
2616 PH/24 If the recipient of an error message contained an @ in the local part
2617 (suitably quoted, of course), incorrect values were put in $domain and
2618 $local_part during the evaluation of errors_copy.
2624 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2625 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2628 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2629 issue a MAIL command.
2631 PH/02 In an ACL statement such as
2633 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2635 if a client was not listed at all, or was listed with a value other than
2636 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2637 the condition was not true (as it should be), so access was not denied.
2638 The bug was that the ! inversion was incorrectly passed on to the second
2639 item. This has been fixed.
2641 PH/03 Added additional dnslists conditions == and =& which are different from
2642 = and & when the dns lookup returns more than one IP address.
2644 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2645 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2647 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2648 FSYNC, which compiles an option called disable_fsync that allows for
2649 bypassing fsync(). The documentation is heavily laced with warnings.
2651 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2653 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2654 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2655 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2656 including adding "make clean"; (3) Added -fPIC when compiling the test
2657 dynamically loaded module, to get rid of a warning.
2659 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2660 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2661 = 0s. The bug is otherwise harmless.
2663 PH/07 There was a bug in the dovecot authenticator such that the value of
2664 $auth1 could be overwritten, and so not correctly preserved, after a
2665 successful authentication. This usually meant that the value preserved by
2666 the server_setid option was incorrect.
2668 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2670 PH/09 Installed PCRE release 7.0.
2672 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2673 run for batched SMTP input. It is now run at the start of every message
2674 in the batch. While fixing this I discovered that the process information
2675 (output by running exiwhat) was not always getting set for -bs and -bS
2676 input. This is fixed, and it now also says "batched" for BSMTP.
2678 PH/11 Added control=no_pipelining.
2680 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2681 patch, slightly modified), and move the expansion of helo_data till after
2682 the connection is made in the smtp transport (so it can use these
2685 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2687 PH/14 Added log_selector = +pid.
2689 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2691 PH/16 Add ${if forany and ${if forall.
2693 PH/17 Added dsn_from option to vary the From: line in DSNs.
2695 PH/18 Flush SMTP output before performing a callout, unless control =
2696 no_callout_flush is set.
2698 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2699 was true (the default) a successful delivery failed to delete the retry
2700 item, thus causing premature timeout of the address. The bug is now
2703 PH/20 Added hosts_avoid_pipelining to the smtp transport.
2705 PH/21 Long custom messages for fakedefer and fakereject are now split up
2706 into multiline responses in the same way that messages for "deny" and
2707 other ACL rejections are.
2709 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2710 with slight modification.
2712 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2713 draft, changing the syntax and factoring some duplicate code".
2715 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2716 for deliveries of the second and subsequent messages over the same SMTP
2719 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2720 ${reduce, with only minor "tidies".
2722 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2724 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2725 expansion side effects.
2727 PH/27 When a message times out after an over-quota error from an Exim-imposed
2728 quota, the bounce message says "mailbox is full". This message was not
2729 being given when it was a system quota that was exceeded. It now should
2732 MH/03 Made $recipients available in local_scan(). local_scan() already has
2733 better access to the recipient list through recipients_list[], but
2734 $recipients can be useful in postmaster-provided expansion strings.
2736 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2737 in the case of a MAIL command with additional options following the
2738 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2739 were accidentally chopped off.
2741 PH/29 SMTP synchronization checks are implemented when a command is read -
2742 there is a check that no more input is waiting when there shouldn't be
2743 any. However, for some commands, a delay in an ACL can mean that it is
2744 some time before the response is written. In this time, more input might
2745 arrive, invalidly. So now there are extra checks after an ACL has run for
2746 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2747 pipelining has not been advertised.
2749 PH/30 MH's patch to allow iscntrl() characters to be list separators.
2751 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2752 returned in the SMTP response when smtp_return_error_details was false.
2753 This has been fixed.
2755 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2756 instead of the C I/O that was originally supplied, because problems were
2757 reported on Solaris.
2759 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2760 Exim which did not show up earlier: it was assuming that a call to
2761 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2762 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2763 was a macro that became an assignment, so it seemed to work. This has
2764 changed to a proper function call with a void return, hence the compile
2765 error. Exim's code has been fixed.
2767 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2770 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2772 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2774 PH/37 If a message is not accepted after it has had an id assigned (e.g.
2775 because it turns out to be too big or there is a timeout) there is no
2776 "Completed" line in the log. When some messages of this type were
2777 selected by exigrep, they were listed as "not completed". Others were
2778 picked up by some special patterns. I have improved the selection
2779 criteria to be more general.
2781 PH/38 The host_find_failed option in the manualroute router can now be set
2782 to "ignore", to completely ignore a host whose IP address cannot be
2783 found. If all hosts are ignored, the behaviour is controlled by the new
2784 host_all_ignored option.
2786 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2787 homing or because of multiple MX records with /mx) generated more than
2788 one IP address, and the following item turned out to be the local host,
2789 all the secondary addresses of the first item were incorrectly removed
2790 from the list, along with the local host and any following hosts (which
2791 is what is supposed to happen).
2793 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2794 whoever called Exim into the -H file. In the case of the daemon it was
2795 behaving confusingly. When first started, it used values for whoever
2796 started the daemon, but after a SIGHUP it used the Exim user (because it
2797 calls itself on a restart). I have changed the code so that it now always
2800 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2801 message are rejected with the same error (e.g. no authentication or bad
2802 sender address), and a DATA command is nevertheless sent (as can happen
2803 with PIPELINING or a stupid MUA), the error message that was given to the
2804 RCPT commands is included in the rejection of the DATA command. This is
2805 intended to be helpful for MUAs that show only the final error to their
2808 PH/42 Another patch from the Sieve maintainer.
2810 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2811 Eximstats - Fixed some broken HTML links and added missing column headers
2813 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2814 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2816 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2818 PH/43 Yet another patch from the Sieve maintainer.
2820 PH/44 I found a way to check for a TCP/IP connection going away before sending
2821 the response to the final '.' that terminates a message, but only in the
2822 case where the client has not sent further data following the '.'
2823 (unfortunately, this is allowed). However, in many cases there won't be
2824 any further data because there won't be any more messages to send. A call
2825 to select() can be used: if it shows that the input is "ready", there is
2826 either input waiting, or the socket has been closed. An attempt to read
2827 the next input character can distinguish the two cases. Previously, Exim
2828 would have sent an OK response which the client would never have see.
2829 This could lead to message repetition. This fix should cure that, at
2830 least in a lot of common cases.
2832 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2833 advertised in response to EHLO.
2839 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2840 fixed by 4.65/MH/01 (is this a record?) are fixed:
2842 (i) An empty string was always treated as zero by the numeric comparison
2843 operators. This behaviour has been restored.
2845 (ii) It is documented that the numeric comparison operators always treat
2846 their arguments as decimal numbers. This was broken in that numbers
2847 starting with 0 were being interpreted as octal.
2849 While fixing these problems I realized that there was another issue that
2850 hadn't been noticed. Values of message_size_limit (both the global option
2851 and the transport option) were treated as octal if they started with 0.
2852 The documentation was vague. These values are now always treated as
2853 decimal, and I will make that clear in the documentation.
2859 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2860 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2863 MH/01 Don't check that the operands of numeric comparison operators are
2864 integers when their expansion is in "skipping" mode (fixes bug
2865 introduced by 4.64-PH/07).
2867 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2868 child addresses, Exim now panics and dies. Previously, because the count
2869 is held in a short int, deliveries were likely to be lost. As such a
2870 large number of recipients for a single message is ridiculous
2871 (performance will be very, very poor), I have chosen to impose a limit
2872 rather than extend the field.
2878 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2879 leftover -K file (the existence of which was triggered by #402).
2880 While we were at it, introduced process PID as part of the -K
2881 filename. This should rule out race conditions when creating
2884 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2885 processing considerably. Previous code took too long for large mails,
2886 triggering a timeout which in turn triggers #401.
2888 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2889 in the DK code in transports.c. sendfile() is not really portable,
2890 hence the _LINUX specificness.
2892 TF/01 In the add_headers option to the mail command in an Exim filter,
2893 there was a bug that Exim would claim a syntax error in any
2894 header after the first one which had an odd number of characters
2897 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2898 callout verification, Exim cached a "reject" for the entire domain. This
2899 is correct for most verifications, but it is not correct for a recipient
2900 verification with use_sender or use_postmaster set, because in that case
2901 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2902 case of MAIL FROM:<> rejection from other early rejections (e.g.
2903 rejection of HELO). When verifying a recipient using a non-null MAIL
2904 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2905 Whatever the result of the callout, the value of the domain cache is
2906 left unchanged (for any other kind of callout, getting as far as trying
2907 RCPT means that the domain itself is ok).
2909 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2912 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2913 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2914 session, the daemon ignores ECONNECT errors and logs others; it now
2915 ignores EPIPE as well.
2917 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2918 (quoted-printable decoding).
2920 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
2921 later the small subsequent patch to fix an introduced bug.
2923 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2925 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2927 PH/08 An error is now given if message_size_limit is specified negative.
2929 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
2930 to be given (somewhat) arbitrary names.
2932 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2935 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2936 miscellaneous code fixes
2938 PH/10 Added the log_reject_target ACL modifier to specify where to log
2941 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2942 hostname. This is wrong, because it relates to the incoming message (and
2943 probably the interface on which it is arriving) and not to the outgoing
2944 callout (which could be using a different interface). This has been
2945 changed to use the value of the helo_data option from the smtp transport
2946 instead - this is what is used when a message is actually being sent. If
2947 there is no remote transport (possible with a router that sets up host
2948 addresses), $smtp_active_hostname is used.
2950 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
2951 tweaks were necessary in order to get it to work (see also 21 below):
2952 (a) The code assumed that strncpy() returns a negative number on buffer
2953 overflow, which isn't the case. Replaced with Exim's string_format()
2955 (b) There were several signed/unsigned issues. I just did the minimum
2956 hacking in of casts. There is scope for a larger refactoring.
2957 (c) The code used strcasecmp() which is not a standard C function.
2958 Replaced with Exim's strcmpic() function.
2959 (d) The code set only $1; it now sets $auth1 as well.
2960 (e) A simple test gave the error "authentication client didn't specify
2961 service in request". It would seem that Dovecot has changed its
2962 interface. Fortunately there's a specification; I followed it and
2963 changed what the client sends and it appears to be working now.
2965 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
2968 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
2969 address A is aliased to B and C, where B exists and C does not. Without
2970 -v the output is "A verified" because verification stops after a
2971 successful redirection if more than one address is generated. However,
2972 with -v the child addresses are also verified. Exim was outputting "A
2973 failed to verify" and then showing the successful verification for C,
2974 with its parentage. It now outputs "B failed to verify", showing B's
2975 parentage before showing the successful verification of C.
2977 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
2978 look up a TXT record in a specific list after matching in a combined
2981 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2982 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2983 they consult the DNS. I had assumed they would set it the way they
2984 wanted; and indeed my experiments on Linux seem to show that in some
2985 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2986 To be on the safe side, however, I have now made the interface to
2987 host_find_byname() similar to host_find_bydns(), with an argument
2988 containing the DNS resolver options. The host_find_byname() function now
2989 sets these options at its start, just as host_find_bydns() does. The smtp
2990 transport options dns_qualify_single and dns_search_parents are passed to
2991 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
2992 of host_find_byname() use the default settings of RES_DEFNAMES
2993 (qualify_single) but not RES_DNSRCH (search_parents).
2995 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
2996 spool_read_header() do less string testing, by means of a preliminary
2997 switch on the second character of optional "-foo" lines. (This is
2998 overdue, caused by the large number of possibilities that now exist.
2999 Originally there were few.) While I was there, I also converted the
3000 str(n)cmp tests so they don't re-test the leading "-" and the first
3001 character, in the hope this might squeeze out yet more improvement.
3003 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
3004 flag allowing group syntax was set by the header_syntax check but not
3005 turned off, possible causing trouble later; (2) The flag was not being
3006 set at all for the header_verify test, causing "group"-style headers to
3007 be rejected. I have now set it in this case, and also caused header_
3008 verify to ignore an empty address taken from a group. While doing this, I
3009 came across some other cases where the code for allowing group syntax
3010 while scanning a header line wasn't quite right (mostly, not resetting
3011 the flag correctly in the right place). These bugs could have caused
3012 trouble for malformed header lines. I hope it is now all correct.
3014 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
3015 with the "reply" argument non-NULL. The code, however (which originally
3016 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
3017 but it didn't always do it. This confused somebody who was copying the
3018 code for some other use. I have removed all the tests.
3020 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
3021 feature that was used to support insecure browsers during the U.S. crypto
3022 embargo. It requires special client support, and Exim is probably the
3023 only MTA that supported it -- and would never use it because real RSA is
3024 always available. This code has been removed, because it had the bad
3025 effect of slowing Exim down by computing (never used) parameters for the
3026 RSA_EXPORT functionality.
3028 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
3029 authenticator to fail if there's a tab character in the incoming data
3030 (there should never be unless someone is messing about, as it's supposed
3031 to be base64-encoded). Also added, on Timo's advice, the "secured" option
3032 if the connection is using TLS or if the remote IP is the same as the
3033 local IP, and the "valid-client-cert option" if a client certificate has
3036 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
3037 authenticators. This can be used for authorization after authentication
3038 succeeds. (In the case of plaintext, it servers for both authentication
3041 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
3042 if any retry times were supplied.
3044 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
3045 connection, where there is no client IP address to check. In this
3046 situation, the verify now always succeeds.
3048 PH/25 Applied John Jetmore's -Mset patch.
3050 PH/26 Added -bem to be like -Mset, but loading a message from a file.
3052 PH/27 In a string expansion for a processed (not raw) header when multiple
3053 headers of the same name were present, leading whitespace was being
3054 removed from all of them, but trailing whitespace was being removed only
3055 from the last one. Now trailing whitespace is removed from each header
3056 before concatenation. Completely empty headers in a concatenation (as
3057 before) are ignored.
3059 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
3060 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
3062 PH/29 [Removed. This was a change that I later backed out, and forgot to
3063 correct the ChangeLog entry (that I had efficiently created) before
3064 committing the later change.]
3066 PH/30 Exim was sometimes attempting to deliver messages that had suffered
3067 address errors (4xx response to RCPT) over the same connection as other
3068 messages routed to the same hosts. Such deliveries are always "forced",
3069 so retry times are not inspected. This resulted in far too many retries
3070 for the affected addresses. The effect occurred only when there were more
3071 hosts than the hosts_max_try setting in the smtp transport when it had
3072 the 4xx errors. Those hosts that it had tried were not added to the list
3073 of hosts for which the message was waiting, so if all were tried, there
3074 was no problem. Two fixes have been applied:
3076 (i) If there are any address or message errors in an SMTP delivery, none
3077 of the hosts (tried or untried) are now added to the list of hosts
3078 for which the message is waiting, so the message should not be a
3079 candidate for sending over the same connection that was used for a
3080 successful delivery of some other message. This seems entirely
3081 reasonable: after all the message is NOT "waiting for some host".
3082 This is so "obvious" that I'm not sure why it wasn't done
3083 previously. Hope I haven't missed anything, but it can't do any
3084 harm, as the worst effect is to miss an optimization.
3086 (ii) If, despite (i), such a delivery is accidentally attempted, the
3087 routing retry time is respected, so at least it doesn't keep
3088 hammering the server.
3090 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
3091 in ${readsocket because some servers need this prod.
3093 PH/32 Added some extra debug output when updating a wait-xxx database.
3095 PH/33 The hint "could be header name not terminated by colon", which has been
3096 given for certain expansion errors for a long time, was not being given
3097 for the ${if def:h_colon_omitted{... case.
3099 PH/34 The spec says: "With one important exception, whenever a domain list is
3100 being scanned, $domain contains the subject domain." There was at least
3101 one case where this was not true.
3103 PH/35 The error "getsockname() failed: connection reset by peer" was being
3104 written to the panic log as well as the main log, but it isn't really
3105 panic-worthy as it just means the connection died rather early on. I have
3106 removed the panic log writing for the ECONNRESET error when getsockname()
3109 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
3110 runs only) independently of the message's sender address. This meant
3111 that, if the 4xx error was in fact related to the sender, a different
3112 message to the same recipient with a different sender could confuse
3113 things. In particular, this can happen when sending to a greylisting
3114 server, but other circumstances could also provoke similar problems.
3115 I have changed the default so that the retry time for these errors is now
3116 based a combination of the sender and recipient addresses. This change
3117 can be overridden by setting address_retry_include_sender=false in the
3120 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
3121 remote server are returned as part of bounce messages. This was not
3122 happening for LMTP over a pipe (the lmtp transport), but now it is the
3123 same for both kinds of LMTP.
3125 PH/38 Despite being documented as not happening, Exim was rewriting addresses
3126 in header lines that were in fact CNAMEs. This is no longer the case.
3128 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
3129 and queue runs started by the daemon processed all messages. This has
3130 been fixed so that -R and -S can now usefully be given with -q<time>.
3132 PH/40 Import PCRE release 6.7 (fixes some bugs).
3134 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
3136 PH/42 Give an error if -q is specified more than once.
3138 PH/43 Renamed the variables $interface_address and $interface_port as
3139 $received_ip_address and $received_port, to make it clear that these
3140 values apply to message reception, and not to the outgoing interface when
3141 a message is delivered. (The old names remain recognized, of course.)
3143 PH/44 There was no timeout on the connect() call when using a Unix domain
3144 socket in the ${readsocket expansion. There now is.
3146 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
3147 be meaningful with "accept".
3149 SC/01 Eximstats V1.43
3150 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
3152 SC/02 Eximstats V1.44
3153 Use a glob alias rather than an array ref in the generated
3154 parser. This improves both readability and performance.
3156 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
3157 Collect SpamAssassin and rejection statistics.
3158 Don't display local sender or destination tables unless
3159 there is data to show.
3160 Added average volumes into the top table text output.
3162 SC/04 Eximstats V1.46
3163 Collect data on the number of addresses (recipients)
3164 as well as the number of messages.
3166 SC/05 Eximstats V1.47
3167 Added 'Message too big' to the list of mail rejection
3168 reasons (thanks to Marco Gaiarin).
3170 SC/06 Eximstats V1.48
3171 Mainlog lines which have GMT offsets and are too short to
3172 have a flag are now skipped.
3174 SC/07 Eximstats V1.49 (Alain Williams)
3175 Added the -emptyok flag.
3177 SC/08 Eximstats V1.50
3178 Fixes for obtaining the IP address from reject messages.
3180 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
3181 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
3182 whitespace changes from 4.64-PH/27
3184 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
3187 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
3188 are found, allow negative numbers in numeric criteria)
3190 JJ/06 exipick.20061117.2, added new $message_body_missing variable
3192 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
3193 to match changes made in 4.64-PH/43
3195 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
3197 PH/47 Put in an explicit test for a DNS lookup of an address record where the
3198 "domain" is actually an IP address, and force a failure. This locks out
3199 those revolvers/nameservers that support "A-for-A" lookups, in
3200 contravention of the specifications.
3202 PH/48 When a host name was looked up from an IP address, and the subsequent
3203 forward lookup of the name timed out, the host name was left in
3204 $sender_host_name, contrary to the specification.
3206 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
3207 restricted to single-key lookups, Exim was not diagnosing an error if
3208 * or *@ was used with a query-style lookup.
3210 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
3212 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
3213 long ago, but noone interested enough thought of it. Let's just say that
3214 the "1.1" means that there are some new functions that weren't there at
3215 some point in the past.
3217 PH/51 Error processing for expansion failure of helo_data from an smtp
3218 transport during callout processing was broken.
3220 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
3221 tested/used via the -bh/-bhc/-bs options.
3223 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
3224 bug, fixed in subsequent PCRE releases).
3226 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
3227 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
3229 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
3235 SC/01 Use a glob alias rather than an array ref in eximstats generated
3236 parser. This improves both readability and performance.
3238 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
3239 Don't display local sender or destination tables in eximstats unless
3240 there is data to show.
3241 Added average volumes into the eximstats top table text output.
3243 SC/03 Collect data on the number of addresses (recipients) as well
3244 as the number of messages in eximstats.
3246 TF/01 Correct an error in the documentation for the redirect router. Exim
3247 does (usually) call initgroups() when daemonizing.
3249 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
3250 with consistent privilege compared to when running as a daemon.
3252 TF/03 Note in the spec that $authenticated_id is not set for local
3253 submissions from trusted users.
3255 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
3256 Thanks to Dean Brooks <dean@iglou.com> for the patch.
3258 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
3259 by adding some example configuration directives to the default
3260 configuration file. A little bit of work is required to uncomment the
3261 directives and define how usernames and passwords are checked, but
3262 there is now a framework to start from.
3264 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
3265 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
3266 without this. I don't know how relevant this is to other LDAP libraries.
3268 PH/02 Add the verb name to the "unknown ACL verb" error.
3270 PH/03 Magnus Holmgren's patch for filter_prepend_home.
3272 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
3274 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
3275 directory not expanded when it should be if an expanded home directory
3276 was set for the address (which is overridden by the transport).
3278 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
3281 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
3282 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
3283 because it is too late at that time, and has no effect.
3285 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
3286 security issue with \' (bugzilla #107). I could not use the
3287 PQescapeStringConn() function, because it needs a PGconn value as one of
3290 PH/08 When testing addresses using -bt, indicate those final addresses that
3291 are duplicates that would not cause an additional delivery. At least one
3292 person was confused, thinking that -bt output corresponded to deliveries.
3293 (Suppressing duplicates isn't a good idea as you lose the information
3294 about possibly different redirections that led to the duplicates.)
3296 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
3297 systems where poll() doesn't work, in particular OS X.
3299 PH/10 Added more information to debugging output for retry time not reached.
3301 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
3302 operations in malware.c.
3304 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
3307 PH/13 If write_rejectlog was set false when logging was sent to syslog with
3308 syslog_duplication set false, log lines that would normally be written
3309 both the the main log and to the reject log were not written to syslog at
3312 PH/14 In the default configuration, change the use of "message" in ACL warn
3313 statements to "add_header".
3315 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
3316 not followed by a command (e.g. "seen endif").
3318 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
3319 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
3322 PH/17 Added extra conditions to the default value of delay_warning_condition
3326 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
3327 { match{$h_precedence:}{(?i)bulk|list|junk} } \
3328 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
3331 The Auto-Submitted: and various List- headers are standardised, whereas I
3332 don't think Precedence: ever was.
3334 PH/18 Refactored debugging code in route_finduser() to show more information,
3335 in particular, the error code if getpwnam() issues one.
3337 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
3338 This is apparently needed in addition to the PH/07 change above to avoid
3339 any possible encoding problems.
3341 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
3342 but not after initializing Perl.
3344 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
3345 output them only if debugging. By default they are written stderr,
3346 apparently, which is not desirable.
3348 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
3351 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
3354 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
3356 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
3357 authenticated or an ident call has been made. Suppress the default
3358 values for $authenticated_id and $authenticated_sender (but permit -oMai
3359 and -oMas) when testing with -bh.
3361 PH/24 Re-jigged the order of the tests in the default configuration so that the
3362 tests for valid domains and recipients precede the DNS black list and CSA
3363 tests, on the grounds that those ones are more expensive.
3365 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
3366 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
3367 This bug exists in every version of Exim that I still have, right back to
3370 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
3371 However, an attempt to turn on case-sensitivity in a regex key by
3372 including (?-i) didn't work because the subject string was already
3373 lowercased, and the effects were non-intuitive. It turns out that a
3374 one-line patch can be used to allow (?-i) to work as expected.
3380 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
3381 other effects) broke the use of negated acl sub-conditions.
3383 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
3386 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
3387 "Deny" causes Exim to reject the incoming connection with a 554 error.
3388 Unfortunately, if there is a major crisis, such as a disk failure,
3389 tcp-wrappers gives "deny", whereas what one would like would be some
3390 kind of temporary error. A kludge has been added to help with this.
3391 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
3392 554 error is used if errno is still zero or contains ENOENT (which occurs
3393 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
3396 PH/03 Add -lutil to the default FreeBSD LIBS setting.
3398 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
3399 errors. Otherwise a message that provokes a temporary error (when other
3400 messages do not) can cause a whole host to time out.
3402 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
3403 addresses were routed directly to files or pipes from a redirect router.
3404 File deliveries just didn't batch; pipe deliveries might have suffered
3407 PH/06 A failure to get a lock for a hints database would erroneously always say
3408 "Failed to get write lock", even when it was really a read lock.
3410 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
3411 of 0600. This has been changed to use the value of the lockfile_mode
3412 option (which defaults to 0600).
3414 PH/08 Applied small patch from the Sieve maintainer.
3416 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
3417 folder from quota calculations, a direct delivery into this folder messed
3418 up the contents of the maildirsize file. This was because the regex was
3419 used only to exclude .Trash (or whatever) when the size of the mailbox
3420 was calculated. There was no check that a delivery was happening into an
3421 excluded directory. This bug has been fixed by ignoring all quota
3422 processing for deliveries into excluded directories.
3424 PH/10 Added the maildirfolder_create_regex option to appendfile.
3430 PH/01 The code for finding all the local interface addresses on a FreeBSD
3431 system running IPv6 was broken. This may well have applied to all BSD
3432 systems, as well as to others that have similar system calls. The broken
3433 code found IPv4 interfaces correctly, but gave incorrect values for the
3434 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
3435 that it would not match correctly against @[] and not recognize the IPv6
3438 PH/02 The ipliteral router was not recognizing addresses of the form user@
3439 [ipv6:....] because it didn't know about the "ipv6:" prefix.
3441 PH/03 Added disable_ipv6.
3443 PH/04 Changed $reply_address to use the raw form of the headers instead of the
3444 decoded form, because it is most often used to construct To: headers
3445 lines in autoreplies, and the decoded form may well be syntactically
3446 invalid. However, $reply_address has leading white space removed, and all
3447 newlines turned into spaces so that the autoreply transport does not
3450 PH/05 If group was specified without a user on a router, and no group or user
3451 was specified on a transport, the group from the router was ignored.
3453 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
3454 for visible compile-time settings that can be used to change these
3455 numbers, for those that want even more. Backwards compatibility with old
3456 spool files has been maintained. However, going back to a previous Exim
3457 release will lost any variables that are in spool files.
3459 PH/07 Two small changes when running in the test harness: increase delay when
3460 passing a TCP/IP connection to a new process, in case the original
3461 process has to generate a bounce, and remove special handling of
3462 127.0.0.2 (sic), which is no longer necessary.
3464 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
3465 be the same on different OS.
3467 PH/09 Moved a debug statement in filter processing to avoid a race problem when
3470 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
3471 whether --show-vars was specified or not
3473 JJ/02 exipick: Added support for new ACL variable spool format introduced
3476 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
3477 syntactically invalid From: or Reply-to: line, and a filter used this to
3478 generate an autoreply, and therefore failed to obtain an address for the
3479 autoreply, Exim could try to deliver to a non-existent relative file
3480 name, causing unrelated and misleading errors. What now happens is that
3481 it logs this as a hard delivery error, but does not attempt to create a
3484 PH/11 The exinext utility has a -C option for testing purposes, but although
3485 the given file was scanned by exinext itself; it wasn't being passed on
3486 when Exim was called.
3488 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
3489 an end-of-file indication when reading a command response.
3491 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
3492 compiled. In many other places in Exim, IPv6 addresses are always
3493 recognized, so I have changed this. It also means that IPv4 domain
3494 literals of the form [IPV4:n.n.n.n] are now always recognized.
3496 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
3497 used if the router is not running as root, for example, when verifying at
3498 ACL time, or when using -bh. The debugging output from this situation was
3499 non-existent - all you got was a failure to exec. I have made two
3502 (a) Failures to set uid/gid, the current directory, or a process leader
3503 in a subprocess such as that created by queryprogram now generate
3504 suitable debugging output when -d is set.
3506 (b) The queryprogram router detects when it is not running as root,
3507 outputs suitable debugging information if -d is set, and then runs
3508 the subprocess without attempting to change uid/gid.
3510 PH/15 Minor change to Makefile for building test_host (undocumented testing
3513 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
3514 additional section of a DNS packet that returns MX or SRV records.
3515 Instead, it always explicitly searches for A/AAAA records. This avoids
3516 major problems that occur when a DNS server includes only records of one
3517 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
3518 fixed another bug: if SRV records were looked up and the corresponding
3519 address records were *not* found in the additional section, the port
3520 values from the SRV records were lost.
3522 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
3523 using the correct key (the original address) when searching the retry
3524 rules in order to find which one to use for generating the retry hint.
3526 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
3527 adding the default one. Similarly, if it contains a Reply-To: header, the
3528 errors_reply_to option, if set, is not used.
3530 PH/19 When calculating a retry time, Exim used to measure the "time since
3531 failure" by looking at the "first failed" field in the retry record. Now
3532 it does not use this if it is later than than the arrival time of the
3533 message. Instead it uses the arrival time. This makes for better
3534 behaviour in cases where some deliveries succeed, thus re-setting the
3535 "first failed" field. An example is a quota failure for a huge message
3536 when small messages continue to be delivered. Without this change, the
3537 "time since failure" will always be short, possible causing more frequent
3538 delivery attempts for the huge message than are intended.
3539 [Note: This change was subsequently modified - see PH/04 for 4.62.]
3541 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
3542 $1, $2, $3) because the numerical variables can be reset during some
3543 expansion items (e.g. "match"), thereby losing the authentication data.
3545 PH/21 Make -bV show the size of off_t variables so that the test suite can
3546 decide whether to run tests for quotas > 2G.
3548 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
3549 mailbox_size, and mailbox_filecount in the appendfile transport. If a
3550 filecount value is greater than 2G or if a quota value is greater than 2G
3551 on a system where the size of off_t is not greater than 4, a panic error
3554 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
projects / exim.git / blob