[exim.git] / doc / doc-txt / ChangeLog
1 Change log file for Exim from version 4.21
2 ------------------------------------------
3 This document describes *changes* to previous versions, that might
4 affect Exim's operation, with an unchanged configuration file. For new
5 options, and new features, see the NewStuff file next to this ChangeLog.
8 Exim version 4.92
9 -----------------
11 JH/01 Remove code calling the customisable local_scan function, unless a new
12 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
14 JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
15 non-signal-safe functions being used.
17 JH/03 Bug 2269: When presented with a received message having a stupidly large
18 number of DKIM-Signature headers, disable DKIM verification to avoid
19 a resource-consumption attack. The limit is set at twenty.
21 JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
22 report of oldest_pass in ${authres } in consequence, and separate out
23 some descriptions of reasons for verification fail.
25 JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
26 files in the spool were present and unlocked. A queue-runner could spot
27 them, resulting in a duplicate delivery. Fix that by doing the unlock
28 after the unlink. Investigation by Tim Stewart. Take the opportunity to
29 add more error-checking on spoolfile handling while that code is being
30 messed with.
32 PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
33 No known attacks, no CVE, this is defensive hardening.
35 JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
36 a queue-runner could start a delivery while other operations were ongoing.
37 Cutthrough delivery was a common victim, resulting in duplicate delivery.
38 Found and investigated by Tim Stewart. Fix by using the open message data
39 file handle rather than opening another, and not locally closing it (which
40 releases a lock) for that case, while creating the temporary .eml format
41 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
43 JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
44 $sender_verify_failure/$recipient_verify_failure to "random".
46 JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
47 legitimate.
49 JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
50 Previously this would segfault.
52 JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
53 segfault.
55 JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
56 like zero, since the resolver should be doing this for us, But we need one
57 as a CNAME but no MX presence gets the CNAME returned; we need to check
58 that doesn't point to an MX to declare it "no MX returned" rather than
59 "error, loop". A new main option is added so the older capability of
60 following some limited number of chain links is maintained.
62 JH/12 Add client-ip info to non-pass iprev ${authres } lines.
64 JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
65 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
66 now-deprecated earlier definitions used only specified the range up to TLS
67 1.2 (in the older-version library docs).
69 JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
71 JH/15 Rework TLS client-side context management. Stop using a global, and
72 explicitly pass a context around. This enables future use of TLS for
73 connections to service-daemons (eg. malware scanning) while a client smtp
74 connection is using TLS; with cutthrough connections this is quite likely.
76 JH/16 Fix ARC verification to do AS checks in reverse order.
78 JH/17 Support a "tls" option on the ${readsocket } expansion item.
80 JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
81 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
82 Previously the "utf8" would be re-prepended for every additional message.
84 JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
85 Previously thery were accepted, resulting in issues when attempting to
86 forward messages to a non-supporting MTA.
88 PP/02 Let -n work with printing macros too, not just options.
90 JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
91 one parent address was copied, and bogus data was used at delivery-logging
92 time. Either a crash (after delivery) or bogus log data could result.
93 Discovery and analysis by Tim Stewart.
95 PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
96 Previously if the string ended mid-character, we did not insert the
97 promised '?' replacement.
99 PP/04 Documentation: current string operators work on bytes, not codepoints.
101 JH/21 Change as many as possible of the global flags into one-bit bitfields; these
102 should pack well giving a smaller memory footprint so better caching and
103 therefore performance. Group the declarations where this can't be done so
104 that the byte-sized flag variables are not interspersed among pointer
105 variables, giving a better chance of good packing by the compiler.
107 JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
108 non-null, to avoid issues with sites running BATV. Previously reports were
109 sent with an empty envelope sender so looked like bounces.
111 JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
112 The ignore_error flag wasn't being returned from the filter subprocess so
113 was not set for later routers. Investigation and fix by Matthias Kurz.
115 JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
116 and a msg:complete for the whole, when a message is manually removed using
117 -Mrm. Developement by Matthias Kurz, hacked on by JH.
119 JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
120 a "Gnu special" function, asprintf() in the DB utility binary builds; I
121 hope that is portable enough.
123 JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
124 requiring a known-CA anchor certificate; make it now rely entirely on the
125 TLSA as an anchor. Checking the name on the leaf cert against the name
126 on the A-record for the host is still done for TA (but not for EE mode).
128 JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
129 included in delivery lines for non-proxied connections, when compiled with
130 SUPPORT_SOCKS and running with proxy logging enabled.
132 JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
133 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
134 move the existing event to fire before the normal logging of message
135 failure so that custom logging is bracketed by normal logging.
137 JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
138 msg:fail:internal event. Developement by Matthias Kurz.
140 JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
141 far too small for todays use of crypto signatures stored there. Go all
142 the way to the max DNS message size of 64kB, even though this might be
143 overmuch for IOT constrained device use.
145 JH/31 Fix a bad use of a copy function, which could be used to pointlessly
146 copy a string over itself. The library routine is documented as not
147 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
149 JH/32 For main options check_spool_space and check_inode_space, where the
150 platform supports 64b integers, support more than the previous 2^31 kB
151 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
152 the previous G, M, k.
154 JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
155 $authenticated_fail_id variable on authentication failure. Previously
156 it was unset.
159 Exim version 4.91
160 -----------------
162 GF/01 DEFER rather than ERROR on redis cluster MOVED response.
163 When redis_servers is set to a list of > 1 element, and the Redis servers
164 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
165 case of MOVED into a DEFER case instead, thus moving the query onto the
166 next server in the list. For a cluster of N elements, all N servers must
167 be defined in redis_servers.
169 GF/02 Catch and remove uninitialized value warning in exiqsumm
170 Check for existence of @ARGV before looking at $ARGV[0]
172 JH/01 Replace the store_release() internal interface with store_newblock(),
173 which internalises the check required to safely use the old one, plus
174 the allocate and data copy operations duplicated in both (!) of the
175 extant use locations.
177 JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
178 modifier. This matches the restriction on the commandline.
180 JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
181 Previously only the last row was returned.
183 JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
184 we assumed that tags in the header were well-formed, and parsed the
185 element content after inspecting only the first char of the tag.
186 Assumptions at that stage could crash the receive process on malformed
187 input.
189 JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
190 While running the DKIM ACL we operate on the Permanent memory pool so that
191 variables created with "set" persist to the DATA ACL. Also (at any time)
192 DNS lookups that fail create cache records using the Permanent pool. But
193 expansions release any allocations made on the current pool - so a dnsdb
194 lookup expansion done in the DKIM ACL releases the memory used for the
195 DNS negative-cache, and bad things result. Solution is to switch to the
196 Main pool for expansions.
197 While we're in that code, add checks on the DNS cache during store_reset,
198 active in the testsuite.
199 Problem spotted, and debugging aided, by Wolfgang Breyha.
201 JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
202 When none of the hosts presented to a transport match an already-open
203 connection, close it and proceed with the list. Previously we would
204 queue the message. Spotted by Lena with Yahoo, probably involving
205 round-robin DNS.
207 JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
208 Previously a spurious "250 OK id=" response was appended to the proper
209 failure response.
211 JH/08 The "support for" informational output now, which built with Content
212 Scanning support, has a line for the malware scanner interfaces compiled
213 in. Interface can be individually included or not at build time.
215 JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
216 by the template makefile "src/EDITME". The "STREAM" support for an older
217 ClamAV interface method is removed.
219 JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
220 rows affected is given instead).
222 JH/11 The runtime Berkeley DB library version is now additionally output by
223 "exim -d -bV". Previously only the compile-time version was shown.
225 JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
226 SMTP connection. Previously, when one had more receipients than the
227 first, an abortive onward connection was made. Move to full support for
228 multiple onward connections in sequence, handling cutthrough connection
229 for all multi-message initiating connections.
231 JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
232 routers. Previously, a multi-recipient message would fail to match the
233 onward-connection opened for the first recipient, and cause its closure.
235 JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
236 a timeout on read on a GnuTLS initiating connection, resulting in the
237 initiating connection being dropped. This mattered most when the callout
238 was marked defer_ok. Fix to keep the two timeout-detection methods
239 separate.
241 JH/15 Relax results from ACL control request to enable cutthrough, in
242 unsupported situations, from error to silently (except under debug)
243 ignoring. This covers use with PRDR, frozen messages, queue-only and
244 fake-reject.
246 HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
248 JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
249 metadata, resulting in a crash in free().
251 PP/01 Fix broken Heimdal GSSAPI authenticator integration.
252 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
253 Broken also in d185889f4, with init system revamp.
255 JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
256 Previously we abruptly closed the connection after reading a malware-
257 found indication; now we go on to read the "scan ok" response line,
258 and send a quit.
260 JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
261 ACL. Previously, a crash would result.
263 JH/19 Speed up macro lookups during configuration file read, by skipping non-
264 macro text after a replacement (previously it was only once per line) and
265 by skipping builtin macros when searching for an uppercase lead character.
267 JH/20 DANE support moved from Experimental to mainline. The Makefile control
268 for the build is renamed.
270 JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
271 was allocated for every new TLS startup, meaning one per message. Fix
272 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
274 JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
275 reported the original. Fix to report (as far as possible) the ACL
276 result replacing the original.
278 JH/23 Fix memory leak during multi-message connections using STARTTLS under
279 OpenSSL. Certificate information is loaded for every new TLS startup,
280 and the resources needed to be freed.
282 JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
284 JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
285 was not propagated.
287 JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
288 DATA response info to the (existing) per-recipient response info for
289 the "C=" log element. It can have useful tracking info from the
290 destination system. Patch from Simon Arlott.
292 JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
293 length value. Previously this would segfault.
295 HS/02 Support Avast multiline protoocol, this allows passing flags to
296 newer versions of the scanner.
298 JH/28 Ensure that variables possibly set during message acceptance are marked
299 dead before release of memory in the daemon loop. This stops complaints
300 about them when the debug_store option is enabled. Discovered specifically
301 for sender_rate_period, but applies to a whole set of variables.
302 Do the same for the queue-runner and queue-list loops, for variables set
303 from spool message files. Do the same for the SMTP per-message loop, for
304 certain variables indirectly set in ACL operations.
306 JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
307 as a multi-recipient message from a mailinglist manager). The coding had
308 an arbitrary cutoff number of characters while checking for more input;
309 enforced by writing a NUL into the buffer. This corrupted long / fast
310 input. The problem was exposed more widely when more pipelineing of SMTP
311 responses was introduced, and one Exim system was feeding another.
312 The symptom is log complaints of SMTP syntax error (NUL chars) on the
313 receiving system, and refused recipients seen by the sending system
314 (propating to people being dropped from mailing lists).
315 Discovered and pinpointed by David Carter.
317 JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
318 replaced by the ${authresults } expansion.
320 JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
322 HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
323 allows proper process termination in container environments.
325 JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
326 Previously the "final dot" had a newline after it; ensure it is CR,LF.
328 JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
329 and "err_perm", deprecated since 4.83 when the RFC-defined words
330 "temperror" and "permerror" were introduced.
332 JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
333 transport-filters or DKIM-signing. The restriction was lost in the
334 consolidation of verify-callout and delivery SMTP handling.
335 Extend the restriction to also cover ARC-signing.
337 JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
338 in defer=pass mode supply a 450 to the initiator. Previously the message
339 would be spooled.
341 PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
342 tls_require_ciphers is used as before.
344 HS/03 Malware Avast: Better match the Avast multiline protocol. Add
345 "pass_unscanned". Only tmpfails from the scanner are written to
346 the paniclog, as they may require admin intervention (permission
347 denied, license issues). Other scanner errors (like decompression
348 bombs) do not cause a paniclog entry.
350 JH/36 Fix reinitialisation of DKIM logging variable between messages.
351 Previously it was possible to log spurious information in receive log
352 lines.
354 JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
355 triggered odd behaviour from Outlook Express clients.
357 PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
358 suffix list.
360 JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
361 since the IETF WG has not yet settled on that versus the original
362 "bare" representation.
364 JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
365 Previously the millisecond value corrupted the output.
366 Fix also for syslog_pid=no and log_selector +pid, for which the pid
367 corrupted the output.
370 Exim version 4.90
371 -----------------
373 JH/01 Rework error string handling in TLS interface so that the caller in
374 more cases is responsible for logging. This permits library-sourced
375 string to be attached to addresses during delivery, and collapses
376 pairs of long lines into single ones.
378 PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
379 during configuration. Wildcards are allowed and expanded.
381 JH/02 Rework error string handling in DKIM to pass more info back to callers.
382 This permits better logging.
384 JH/03 Rework the transport continued-connection mechanism: when TLS is active,
385 do not close it down and have the child transport start it up again on
386 the passed-on TCP connection. Instead, proxy the child (and any
387 subsequent ones) for TLS via a unix-domain socket channel. Logging is
388 affected: the continued delivery log lines do not have any DNSSEC, TLS
389 Certificate or OCSP information. TLS cipher information is still logged.
391 JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
392 identical IP addresses on different listening ports. Will also affect
393 "exiwhat" output.
395 PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
396 add noisy ifdef guards to special-case this sillyness.
397 Patch from Bernd Kuhls.
399 JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
400 than 255 are no longer allowed.
402 JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
403 Disable the session-cache too, which might reduce our load. Since we
404 currrectly use a new context for every connection, both as server and
405 client, there is no benefit for these.
406 GnuTLS appears to not support tickets server-side by default (we don't
407 call gnutls_session_ticket_enable_server()) but client side is enabled
408 by default on recent versions (3.1.3 +) unless the PFS priority string
409 is used (3.2.4 +).
411 PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
412 <https://reproducible-builds.org/specs/source-date-epoch/>.
414 JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
415 the check for any unsuccessful recipients did not notice the limit, and
416 erroneously found still-pending ones.
418 JH/08 Pipeline CHUNKING command and data together, on kernels that support
419 MSG_MORE. Only in-clear (not on TLS connections).
421 JH/09 Avoid using a temporary file during transport using dkim. Unless a
422 transport-filter is involved we can buffer the headers in memory for
423 creating the signature, and read the spool data file once for the
424 signature and again for transmission.
426 JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
427 4.77 as the kernel support then wasn't solid, having issues in 64bit
428 mode. Now, it's been long enough. Add support for FreeBSD also.
430 JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
431 case where the routing stage had gathered several addresses to send to
432 a host before calling the transport for the first, we previously failed
433 to close down TLS in the old transport process before passing the TCP
434 connection to the new process. The new one sent a STARTTLS command
435 which naturally failed, giving a failed delivery and bloating the retry
436 database. Investigation and fix prototype from Wolfgang Breyha.
438 JH/12 Fix check on SMTP command input synchronisation. Previously there were
439 false-negatives in the check that the sender had not preempted a response
440 or prompt from Exim (running as a server), due to that code's lack of
441 awareness of the SMTP input buffering.
443 PP/04 Add commandline_checks_require_admin option.
444 Exim drops privileges sanely, various checks such as -be aren't a
445 security problem, as long as you trust local users with access to their
446 own account. When invoked by services which pass untrusted data to
447 Exim, this might be an issue. Set this option in main configuration
448 AND make fixes to the calling application, such as using `--` to stop
449 processing options.
451 JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
452 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
453 responses to those, into a single TLS record each way (this usually means
454 a single packet). As a side issue, smtp_enforce_sync now works on TLS
455 connections.
457 PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
458 affects you only if you're dancing at the edge of the param size limits.
459 If you are, and this message makes sense to you, then: raise the
460 configured limit or use OpenSSL 1.1. Nothing we can do for older
461 versions.
463 JH/14 For the "sock" variant of the malware scanner interface, accept an empty
464 cmdline element to get the documented default one. Previously it was
465 inaccessible.
467 JH/15 Fix a crash in the smtp transport caused when two hosts in succession
468 are unsuable for non-message-specific reasons - eg. connection timeout,
469 banner-time rejection.
471 JH/16 Fix logging of delivery remote port, when specified by router, under
472 callout/hold.
474 PP/06 Repair manualroute's ability to take options in any order, even if one
475 is the name of a transport.
476 Fixes bug 2140.
478 HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
480 JH/17 Change the list-building routines interface to use the expanding-string
481 triplet model, for better allocation and copying behaviour.
483 JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
484 Previously it was constructed the first time a possibly-matching string
485 was met in the configuration file input during startup; now it is done
486 during compilation.
488 JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
489 compatible one, to avoid the (poorly documented) possibility of a config
490 file in the working directory redirecting the DB files, possibly correpting
491 some existing file. CVE-2017-10140 assigned for BDB.
493 JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
494 cache-hot. Previously, although the result was properly cached, the
495 initial verify call returned a defer.
497 JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
498 the main verify for receipient in uncached-mode.
500 JH/22 Retire historical build files to an "unsupported" subdir. These are
501 defined as "ones for which we have no current evidence of testing".
503 JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
504 if present. Previously it was ignored.
506 JH/24 Start using specified-initialisers in C structure init coding. This is
507 a C99 feature (it's 2017, so now considered safe).
509 JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
510 if was a fixed-sized field and bitmask ops via macros; it is now more
511 extensible.
513 PP/07 GitHub PR 56: Apply MariaDB build fix.
514 Patch provided by Jaroslav Škarvada.
516 PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
517 during Coverity cleanups [4.87 JH/47]
518 Diagnosis and fix provided by Michael Fischer v. Mollard.
520 JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
521 the right size to place the terminating semicolon on its own folded
522 line, the header hash was calculated to an incorrect value thanks to
523 the (relaxed) space the fold became.
525 HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
526 and confused the parent.
528 JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
529 which could crash as a result. This could lead to undeliverable messages.
531 JH/28 Logging: "next input sent too soon" now shows where input was truncated
532 for log purposes.
534 JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
535 matters on fast-turnover and PID-randomising systems, which were getting
536 out-of-order delivery.
538 JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
539 a possibly-overlapping copy. The symptom was that "Remote host closed
540 connection in response to HELO" was logged instead of the actual 4xx
541 error for the HELO.
543 JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
544 Previously only that bufferd was discarded, resulting in SYMTP command
545 desynchronisation.
547 JH/32 DKIM: when a message has multiple signatures matching an identity given
548 in dkim_verify_signers, run the dkim acl once for each. Previously only
549 one run was done. Bug 2189.
551 JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
552 "panic the current process" to "deliberately defer". The panic log is
553 still written with the problem list name; the mail and reject logs now
554 get a temp-reject line for the message that was being handled, saying
555 something like "domains check lookup or other defer". The SMTP 451
556 message is still "Temporary local problem".
558 JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
559 A crafted sequence of BDAT commands could result in in-use memory beeing
560 freed. CVE-2017-16943.
562 HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
563 from SMTP input. Previously it was always done; now only done for DATA
564 and not BDAT commands. CVE-2017-16944.
566 JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
567 to the message (such as an overlong header line). Previously this was
568 not done and we did not exit BDAT mode. Followon from the previous item
569 though a different problem.
572 Exim version 4.89
573 -----------------
575 JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
576 than -2003 did; needs libidn2 in addition to libidn.
578 JH/02 The path option on a pipe transport is now expanded before use.
580 PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
581 Patch provided by "Björn", documentation fix added too.
583 JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
584 missing a wire-to-host endian conversion.
586 JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
587 close after a BDAT command line could be taken as a following command,
588 giving a synch failure. Fix by only checking for synch immediately
589 before acknowledging the chunk.
591 PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
592 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
593 macro. Patches provided by Josh Soref.
595 JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
596 Previously we did not; the RFC seems ambiguous and VRFY is not listed
597 by IANA as a service extension. However, John Klensin suggests that we
598 should.
600 JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
601 the dkim code may be unix-mode line endings rather than smtp wire-format
602 CRLF, so prepend a CR to any bare LF.
604 JH/07 Rationalise the coding for callout smtp conversations and transport ones.
605 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
607 JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
608 the first were themselves being wrongly included in the feed into dkim
609 processing; with most chunk sizes in use this resulted in an incorrect
610 body hash calculated value.
612 JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
613 DKIM signature block, for verification. Although advised against by
614 standards it is specifically not ruled illegal.
616 JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
618 JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
619 missing a body hash (the bh= tag).
621 JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
622 It seems that HAProxy sends the Proxy Protocol information in clear and
623 only then does a TLS startup, so do the same.
625 JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
626 TCP connections (such as for Spamd) unless the daemon successfully set
627 Fast Open mode on its listening sockets. This fixes breakage seen on
628 too-old kernels or those not configured for Fast Open, at the cost of
629 requiring both directions being enabled for TFO, and TFO never being used
630 by non-daemon-related Exim processes.
632 JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
633 endings, at least on the first header line. Try to canonify any that get
634 past that check, despite the cost.
636 JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
637 now limited to an arbitrary five deep, while parsing addresses with the
638 strip_excess_angle_brackets option enabled.
640 PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
641 instead leave the unprompted TLS handshake in socket buffer for the
642 TLS library to consume.
644 PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
646 PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
648 JH/16 Drop variables when they go out of scope. Memory management drops a whole
649 region in one operation, for speed, and this leaves assigned pointers
650 dangling. Add checks run only under the testsuite which checks all
651 variables at a store-reset and panics on a dangling pointer; add code
652 explicitly nulling out all the variables discovered. Fixes one known
653 bug: a transport crash, where a dangling pointer for $sending_ip_address
654 originally assigned in a verify callout, is re-used.
656 PP/06 Drop '.' from @INC in various Perl scripts.
658 PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
660 PP/08 Reduce a number of compilation warnings under clang; building with
661 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
662 should be warning-free.
664 JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
666 HS/01 Fix portability problems introduced by PP/08 for platforms where
667 realloc(NULL) is not equivalent to malloc() [SunOS et al].
669 HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
670 chunk. This allows us to accept broken chunked messages. We need a more
671 general solution here.
673 PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
674 already-broken messages in the queue.
676 JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
678 JH/19 Fix reference counting bug in routing-generated-address tracking.
681 Exim version 4.88
682 -----------------
684 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
685 supports it and a size is available (ie. the sending peer gave us one).
687 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
688 years of being deprecated). The replacements are the ACLs
689 acl_smtp_mime and acl_not_smtp_mime.
691 JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
692 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
693 or even an in-clear connection were permitted. Now, if the host lookup
694 was dnssec and dane was requested then the host is only used if the
695 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
696 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
697 if one fails this test.
698 This means that a poorly-configured remote DNS will make it incommunicado;
699 but it protects against a DNS-interception attack on it.
701 JH/04 Bug 1810: make continued-use of an open smtp transport connection
702 non-noisy when a race steals the message being considered.
704 JH/05 If main configuration option tls_certificate is unset, generate a
705 self-signed certificate for inbound TLS connections.
707 JH/06 Bug 165: hide more cases of password exposure - this time in expansions
708 in rewrites and routers.
710 JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
711 and logged a warning sing 4.83; now they are a configuration file error.
713 JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
714 (lacking @domain). Apply the same qualification processing as RCPT.
716 JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
718 JH/10 Support ${sha256:} applied to a string (as well as the previous
719 certificate).
721 JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
722 a cutthrough deliver is pending, as we always want to make a connection.
723 This also avoids re-routing the message when later placing the cutthrough
724 connection after a verify cache hit.
725 Do not update it with the verify result either.
727 JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
728 when routing results in more than one destination address.
730 JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
731 signing (which inhibits the cutthrough capability). Previously only
732 the presence of an option was tested; now an expansion evaluating as
733 empty is permissible (obviously it should depend only on data available
734 when the cutthrough connection is made).
736 JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
737 the relevant preceding SMTP command did not note the pipelining mode.
739 JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
740 Previously they were not counted.
742 JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
743 as one having no matching records. Previously we deferred the message
744 that needed the lookup.
746 JH/17 Fakereject: previously logged as a normal message arrival "<="; now
747 distinguished as "(=".
749 JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
750 for missing MX records. Previously it only worked for missing A records.
752 JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
754 JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
755 after the data-go-ahead and data-ack. Patch from Jason Betts.
757 JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
758 even for a "none" policy. Patch from Tony Meyer.
760 JH/22 Fix continued use of a connection for further deliveries. If a port was
761 specified by a router, it must also match for the delivery to be
762 compatible.
764 JH/23 Bug 1874: fix continued use of a connection for further deliveries.
765 When one of the recipients of a message was unsuitable for the connection
766 (has no matching addresses), we lost track of needing to mark it
767 deferred. As a result mail would be lost.
769 JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
771 JH/25 Decoding ACL controls is now done using a binary search; the source code
772 takes up less space and should be simpler to maintain. Merge the ACL
773 condition decode tables also, with similar effect.
775 JH/26 Fix problem with one_time used on a redirect router which returned the
776 parent address unchanged. A retry would see the parent address marked as
777 delivered, so not attempt the (identical) child. As a result mail would
778 be lost.
780 JH/27 Fix a possible security hole, wherein a process operating with the Exim
781 UID can gain a root shell. Credit to http://www.halfdog.net/ for
782 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
783 itself :(
785 JH/28 Enable {spool,log} filesystem space and inode checks as default.
786 Main config options check_{log,spool}_{inodes,space} are now
787 100 inodes, 10MB unless set otherwise in the configuration.
789 JH/29 Fix the connection_reject log selector to apply to the connect ACL.
790 Previously it only applied to the main-section connection policy
791 options.
793 JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
795 PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
796 by me. Added RFC7919 DH primes as an alternative.
798 PP/02 Unbreak build via pkg-config with new hash support when crypto headers
799 are not in the system include path.
801 JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
802 GnuTLS, when a session startup failed (eg because the client disconnected)
803 Exim did stdio operations after fclose. This was exposed by a recent
804 change which nulled out the file handle after the fclose.
806 JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
807 signed directly by the cert-signing cert, rather than an intermediate
808 OCSP-signing cert. This is the model used by LetsEncrypt.
810 JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
812 HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
813 an incoming connection.
815 HS/02 Bug 1802: Do not half-close the connection after sending a request
816 to rspamd.
818 HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
819 fallback to "prime256v1".
821 JH/34 SECURITY: Use proper copy of DATA command in error message.
822 Could leak key material. Remotely exploitable. CVE-2016-9963.
825 Exim version 4.87
826 -----------------
828 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
829 and 3.4.4 - once the server is enabled to respond to an OCSP request
830 it does even when not requested, resulting in a stapling non-aware
831 client dropping the TLS connection.
833 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
834 support variable-length bit vectors. No functional change.
836 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
837 The I= interface field on outgoing lines is now after the H= remote
838 host field, same as incoming lines. There is a separate
839 outgoing_interface log selector which allows you to disable the
840 outgoing I= field.
842 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
843 If not running log_selector +smtp_connection the mainlog would be held
844 open indefinitely after a "too many connections" event, including to a
845 deleted file after a log rotate. Leave the per net connection logging
846 leaving it open for efficiency as that will be quickly detected by the
847 check on the next write.
849 HS/01 Bug 1671: Fix post transport crash.
850 Processing the wait-<transport> messages could crash the delivery
851 process if the message IDs didn't exist for some reason. When
852 using 'split_spool_directory=yes' the construction of the spool
853 file name failed already, exposing the same netto behaviour.
855 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
856 mime_regex ACL conditions.
858 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
859 to DSN fail messages (bounces): remote IP, remote greeting, remote response
860 to HELO, local diagnostic string.
862 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
863 log line to debug. Even when configured with a tls authenticator many
864 client connections are expected to not authenticate in this way, so
865 an authenticate fail is not an error.
867 HS/02 Add the Exim version string to the process info. This way exiwhat
868 gives some more detail about the running daemon.
870 JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
871 matter for fast-change records such as DNSBLs.
873 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
874 retry record, even if constant. There may be multiple transports with
875 different interface settings and the retry behaviour needs to be kept
876 distinct.
878 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
880 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
882 JH/10 Bug 840: fix log_defer_output option of pipe transport
884 JH/11 Bug 830: use same host for all RCPTS of a message, even under
885 hosts_randomize. This matters a lot when combined with mua_wrapper.
887 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
888 ${quote_pgsql:<string>} operator.
890 JH/13 Bug 1708: avoid misaligned access in cached lookup.
892 JH/14 Change header file name for freeradius-client. Relevant if compiling
893 with Radius support; from the Gentoo tree and checked under Fedora.
895 JH/15 Bug 1712: Introduce $prdr_requested flag variable
897 JH/16 Bug 1714: Permit an empty string as expansion result for transport
898 option transport_filter, meaning no filtering.
900 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
902 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
903 defaults to "*" (all hosts). The variable is now available when not built
904 with TLS, default unset, mainly to enable keeping the testsuite sane.
905 If a server certificate is not supplied (via tls_certificate) an error is
906 logged, and clients will find TLS connections fail on startup. Presumably
907 they will retry in-clear.
908 Packagers of Exim are strongly encouraged to create a server certificate
909 at installation time.
911 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
912 with the $config_file variable.
914 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
915 in transport context, after the attempt, and per-recipient. The latter type
916 is per host attempted. The event data is the error message, and the errno
917 information encodes the lookup type (A vs. MX) used for the (first) host,
918 and the trailing two digits of the smtp 4xx response.
920 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
921 to write to mainlog (or rejectlog, paniclog) in the window between file
922 creation and permissions/ownership being changed. Particularly affects
923 installations where exicyclog is run as root, rather than exim user;
924 result is that the running daemon panics and dies.
926 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
928 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
929 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
930 "pri" and "weight". Note that the previous implicit priority given by the
931 list order is no longer honoured.
933 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
934 for DKIM processing.
936 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
937 by defining SUPPORT_SOCKS.
939 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
940 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
941 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
942 variables are renamed to proxy_{local,external}_{address,port}.
944 JH/27 Move Internationalisation support from Experimental to mainline, enabled
945 for a build by defining SUPPORT_I18N
947 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
948 of the query string, and make ${quote_redis:} do that quoting.
950 JH/29 Move Events support from Experimental to mainline, enabled by default
951 and removable for a build by defining DISABLE_EVENT.
953 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
955 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
956 cached by the daemon.
958 JH/32 Move Redis support from Experimental to mainline, enabled for a build
959 by defining LOOKUP_REDIS. The libhiredis library is required.
961 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
962 keys are given for lookup.
964 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
965 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
966 only supported when built with TLS support. The PolarSSL SHA routines
967 are still used when the TLS library is too old for convenient support.
969 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
970 openssl_options), for security. OpenSSL forces this from version 1.1.0
971 server-side so match that on older versions.
973 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
974 allocation for $value could be released as the expansion processing
975 concluded, but leaving the global pointer active for it.
977 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
978 and to use the domains and local_parts ACL conditions.
980 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
981 incorrectly not doubled on cutthrough transmission, hence seen as a
982 body-termination at the receiving system - resulting in truncated mails.
983 Commonly the sender saw a TCP-level error, and retransmitted the message
984 via the normal store-and-forward channel. This could result in duplicates
985 received - but deduplicating mailstores were liable to retain only the
986 initial truncated version.
988 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
990 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
992 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
993 we're in there, support oversigning also; bug 1309.
995 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
997 HS/04 Add support for keep_environment and add_environment options.
999 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1000 either intentional arithmetic overflow during PRNG, or testing config-
1001 induced overflows.
1003 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1004 delivery resulted in actual delivery. Cancel cutthrough before DATA
1005 stage.
1007 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1008 rejects a recipient: pass the reject to the originator.
1010 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1011 Many were false-positives and ignorable, but it's worth fixing the
1012 former class.
1014 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1015 for the new environment-manipulation done at startup. Move the routines
1016 from being local to tls.c to being global via the os.c file.
1018 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1019 an extract embedded as result-arg for a map, the first arg for extract
1020 is unavailable so we cannot tell if this is a numbered or keyed
1021 extraction. Accept either.
1024 Exim version 4.86
1025 -----------------
1027 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1028 expanded.
1030 JH/02 The smtp transport option "multi_domain" is now expanded.
1032 JH/03 The smtp transport now requests PRDR by default, if the server offers
1033 it.
1035 JH/04 Certificate name checking on server certificates, when exim is a client,
1036 is now done by default. The transport option tls_verify_cert_hostnames
1037 can be used to disable this per-host. The build option
1040 JH/05 The value of the tls_verify_certificates smtp transport and main options
1041 default to the word "system" to access the system default CA bundle.
1042 For GnuTLS, only version 3.0.20 or later.
1044 JH/06 Verification of the server certificate for a TLS connection is now tried
1045 (but not required) by default. The verification status is now logged by
1046 default, for both outbound TLS and client-certificate supplying inbound
1047 TLS connections
1049 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1050 sites use this now.
1052 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1053 Status Notification (bounce) messages are now MIME format per RFC 3464.
1054 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1055 under the control of the dsn_advertise_hosts option, and routers may
1056 have a dsn_lasthop option.
1058 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1059 default, modifiable by a malware= option. The list separator for
1060 the options can now be changed in the usual way. Bug 68.
1062 JH/10 The smtp_receive_timeout main option is now expanded before use.
1064 JH/11 The incoming_interface log option now also enables logging of the
1065 local interface on delivery outgoing connections.
1067 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1068 if the interface and destination host and port all match.
1070 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1071 /defer_ok option.
1073 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1074 Patch from Andrew Lewis.
1076 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
1077 now supports optional time-restrictions, weighting, and priority
1078 modifiers per server. Patch originally by <rommer@active.by>.
1080 JH/16 The spamd_address main option now supports a mixed list of local
1081 and remote servers. Remote servers can be IPv6 addresses, and
1082 specify a port-range.
1084 JH/17 Bug 68: The spamd_address main option now supports an optional
1085 timeout value per server.
1087 JH/18 Bug 1581: Router and transport options headers_add/remove can
1088 now have the list separator specified.
1090 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
1091 option values.
1093 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
1094 under OpenSSL.
1096 JH/21 Support for the A6 type of dns record is withdrawn.
1098 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1099 rather than the verbs used.
1101 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1102 from 255 to 1024 chars.
1104 JH/24 Verification callouts now attempt to use TLS by default.
1106 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
1107 are generic router options now. The defaults didn't change.
1109 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1110 Original patch from Alexander Shikoff, worked over by JH.
1112 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1113 files if ZCAT_COMMAND is not executable.
1115 JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
1117 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1119 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1120 Normally benign, it bites when the pair was led to by a CNAME;
1121 modern usage is to not canonicalize the domain to a CNAME target
1122 (and we were inconsistent anyway for A-only vs AAAA+A).
1124 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1126 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1127 when evaluating $sender_host_dnssec.
1129 JH/31 Check the HELO verification lookup for DNSSEC, adding new
1130 $sender_helo_dnssec variable.
1132 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1134 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1136 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1138 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1139 documented as working, but never had. Support all but $spam_report.
1141 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1142 added for tls authenticator.
1144 HS/03 Add perl_taintmode main config option
1147 Exim version 4.85
1148 -----------------
1150 TL/01 When running the test suite, the README says that variables such as
1151 no_msglog_check are global and can be placed anywhere in a specific
1152 test's script, however it was observed that placement needed to be near
1153 the beginning for it to behave that way. Changed the runtest perl
1154 script to read through the entire script once to detect and set these
1155 variables, reset to the beginning of the script, and then run through
1156 the script parsing/test process like normal.
1158 TL/02 The BSD's have an arc4random API. One of the functions to induce
1159 adding randomness was arc4random_stir(), but it has been removed in
1160 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1161 function when detected.
1163 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1164 cause callback expansion.
1166 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1167 syntax errors in an expansion can be treated as a string instead of
1168 logging or causing an error, due to the internal use of bool_lax
1169 instead of bool when processing it.
1171 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
1172 server certificates when making smtp deliveries.
1174 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1176 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1178 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1180 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1181 Merged patch from Sebastian Wiedenroth.
1183 JH/05 Fix results-pipe from transport process. Several recipients, combined
1184 with certificate use, exposed issues where response data items split
1185 over buffer boundaries were not parsed properly. This eventually
1186 resulted in duplicates being sent. This issue only became common enough
1187 to notice due to the introduction of connection certificate information,
1188 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1190 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1191 size buffer was used, resulting in syntax errors when an expansion
1192 exceeded it.
1194 JH/07 Add support for directories of certificates when compiled with a GnuTLS
1195 version 3.3.6 or later.
1197 JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
1198 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1199 both become "event_action", the variables become $event_name, $event_data
1200 and $event_defer_errno. There is a new variable $verify_mode, usable in
1201 routers, transports and related events. The tls:cert event is now also
1202 raised for inbound connections, if the main configuration event_action
1203 option is defined.
1205 TL/06 In test suite, disable OCSP for old versions of openssl which contained
1206 early OCSP support, but no stapling (appears to be less than 1.0.0).
1208 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1209 server certificate names available under the smtp transport option
1210 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1211 matches.
1213 JH/10 Time-related extraction expansions from certificates now use the main
1214 option "timezone" setting for output formatting, and are consistent
1215 between OpenSSL and GnuTLS compilations. Bug 1541.
1217 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1218 encoded parameter in the incoming message. Bug 1558.
1220 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1221 include certificate info, eximon was claiming there were spoolfile
1222 syntax errors.
1224 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
1226 JH/14 Log delivery-related information more consistently, using the sequence
1227 "H=<name> [<ip>]" wherever possible.
1229 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1230 are problematic for Debian distribution, omit them from the release
1231 tarball.
1233 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1235 JH/16 Fix string representation of time values on 64bit time_t architectures.
1236 Bug 1561.
1238 JH/17 Fix a null-indirection in certextract expansions when a nondefault
1239 output list separator was used.
1242 Exim version 4.84
1243 -----------------
1244 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1245 checkers that were complaining about end of non-void function with no
1246 return.
1248 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
1249 This was a regression introduced in 4.83 by another bugfix.
1251 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1253 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
1254 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
1257 Exim version 4.83
1258 -----------------
1260 TF/01 Correctly close the server side of TLS when forking for delivery.
1262 When a message was received over SMTP with TLS, Exim failed to clear up
1263 the incoming connection properly after forking off the child process to
1264 deliver the message. In some situations the subsequent outgoing
1265 delivery connection happened to have the same fd number as the incoming
1266 connection previously had. Exim would try to use TLS and fail, logging
1267 a "Bad file descriptor" error.
1269 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1270 utilities have not been installed.
1272 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1273 temporary space as the ACL may create new global variables.
1275 TL/01 LDAP support uses per connection or global context settings, depending
1276 upon the detected version of the libraries at build time.
1278 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1279 to extract and use the src ip:port in logging and expansions as if it
1280 were a direct connection from the outside internet. PPv2 support was
1281 updated based on HAProxy spec change in May 2014.
1283 JH/02 Add ${listextract {number}{list}{success}{fail}}.
1285 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1286 Properly escape header and check for NULL return.
1288 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1289 not dns_use_dnssec.
1291 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1293 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1294 characters in header names, implemented as a verify condition.
1295 Contributed by Michael Fischer v. Mollard.
1297 TL/05 Rename SPF condition results err_perm and err_temp to standardized
1298 results permerror and temperror. Previous values are deprecated but
1299 still accepted. In a future release, err_perm and err_temp will be
1300 completely removed, which will be a backward incompatibility if the
1301 ACL tests for either of these two old results. Patch contributed by
1302 user bes-internal on the mailing list.
1304 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1306 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1307 selectors, in both main and reject logs.
1309 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1310 failed delivery.
1312 JH/07 Add malware type "sock" for talking to simple daemon.
1314 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
1316 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1317 routers/transports under cutthrough routing.
1319 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1320 numbers. Touch up "bool" conditional to keep the same definition.
1322 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1324 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1326 JH/12 Expand items in router/transport headers_add or headers_remove lists
1327 individually rather than the list as a whole. Bug 1452.
1329 Required for reasonable handling of multiple headers_ options when
1330 they may be empty; requires that headers_remove items with embedded
1331 colons must have them doubled (or the list-separator changed).
1333 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1334 view the policy declared in the DMARC record. Currently, $dmarc_status
1335 is a combined value of both the record presence and the result of the
1336 analysis.
1338 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1340 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
1341 dnslookup router and the smtp transport (applying to the forward
1342 lookup).
1344 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1345 of ldap servers used for a specific lookup. Patch provided by Heiko
1346 Schlichting.
1348 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
1349 New variable $lookup_dnssec_authenticated for observability.
1351 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1352 Patch submitted by Lars Timman.
1354 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1356 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1357 Requires trusted mode and valid format message id, aborts otherwise.
1358 Patch contributed by Heiko Schlichting.
1360 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1361 certextract with support for various fields. Bug 1358.
1363 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1364 is requested by default, modifiable by smtp transport option
1365 hosts_request_ocsp.
1367 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
1368 operate on certificate variables to give certificate fingerprints
1369 Also new ${sha256:cert_variable}.
1371 JH/23 The PRDR feature is moved from being Experimental into the mainline.
1373 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1374 Christian Aistleitner.
1376 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1378 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1379 file. Patch from Wolfgang Breyha.
1381 JH/25 Expand the coverage of the delivery $host and $host_address to
1382 client authenticators run in verify callout. Bug 1476.
1384 JH/26 Port service names are now accepted for tls_on_connect_ports, to
1385 align with daemon_smtp_ports. Bug 72.
1387 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1388 support and error reporting did not work properly.
1390 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1391 and is readable. Patch from Andrew Colin Kissa.
1393 TL/14 Enhance documentation of ${run expansion and how it parses the
1394 commandline after expansion, particularly in the case when an
1395 unquoted variable expansion results in an empty value.
1397 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1399 PP/02 Fix internal collision of T_APL on systems which support RFC3123
1400 by renaming away from it. Addresses GH issue 15, reported by
1401 Jasper Wallace.
1403 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1405 TL/15 SECURITY: prevent double expansion in math comparison functions
1406 (can expand unsanitized data). Not remotely exploitable.
1407 CVE-2014-2972
1410 Exim version 4.82
1411 -----------------
1413 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1415 PP/02 Make -n do something, by making it not do something.
1416 When combined with -bP, the name of an option is not output.
1418 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1419 by GnuTLS.
1421 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1422 $sender_host_name and config options to manage this, and basic check
1423 routines.
1425 PP/05 DSCP support for outbound connections and control modifier for inbound.
1427 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
1428 (Only plugin which currently uses this is kerberos4, which nobody should
1429 be using, but we should make it available and other future plugins might
1430 conceivably use it, even though it would break NAT; stuff *should* be
1431 using channel bindings instead).
1433 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
1434 name; added for Sendmail compatibility; requires admin caller.
1435 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1436 just ignore it); requires trusted caller.
1437 Also parse but ignore: -Ac -Am -X<logfile>
1438 Bugzilla 1117.
1440 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
1442 TL/02 Add +smtp_confirmation as a default logging option.
1444 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1445 Patch by Magnus Holmgren from 2007-02-20.
1447 TL/04 Bugzilla 1281 - Spec typo.
1448 Bugzilla 1283 - Spec typo.
1449 Bugzilla 1290 - Spec grammar fixes.
1451 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
1453 TL/06 Add Experimental DMARC support using libopendmarc libraries.
1455 TL/07 Fix an out of order global option causing a segfault. Reported to dev
1456 mailing list by by Dmitry Isaikin.
1458 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1460 JH/02 Support "G" suffix to numbers in ${if comparisons.
1462 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1464 NM/01 Bugzilla 1197 - Spec typo
1465 Bugzilla 1196 - Spec examples corrections
1467 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
1469 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1470 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1471 function.
1473 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1474 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1476 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1477 "acl {{name}{arg}...}", and optional args on acl condition
1478 "acl = name arg..."
1480 JH/05 Permit multiple router/transport headers_add/remove lines.
1482 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1484 JH/07 Avoid using a waiting database for a single-message-only transport.
1485 Performance patch from Paul Fisher. Bugzilla 1262.
1487 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1488 Bugzilla 884.
1490 JH/09 Add $headers_added variable, with content from use of ACL modifier
1491 add_header (but not yet added to the message). Bugzilla 199.
1493 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1494 Pulled from Bugzilla 817 by Wolfgang Breyha.
1496 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1497 CVE-2012-5671
1498 (nb: this is the same fix as in Exim 4.80.1)
1500 JH/11 Add A= logging on delivery lines, and a client_set_id option on
1501 authenticators.
1503 JH/12 Add optional authenticated_sender logging to A= and a log_selector
1504 for control.
1506 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1508 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1509 advertise SMTP AUTH mechanism to us, instead of a generic
1510 protocol violation error. Also, make Exim more robust to bad
1511 data from the Dovecot auth socket.
1513 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1515 When a queue runner is handling a message, Exim first routes the
1516 recipient addresses, during which it prunes them based on the retry
1517 hints database. After that it attempts to deliver the message to
1518 any remaining recipients. It then updates the hints database using
1519 the retry rules.
1521 So if a recipient address works intermittently, it can get repeatedly
1522 deferred at routing time. The retry hints record remains fresh so the
1523 address never reaches the final cutoff time.
1525 This is a fairly common occurrence when a user is bumping up against
1526 their storage quota. Exim had some logic in its local delivery code
1527 to deal with this. However it did not apply to per-recipient defers
1528 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1530 This change adds a proper retry rule check during routing so that the
1531 final cutoff time is checked against the message's age. We only do
1532 this check if there is an address retry record and there is not a
1533 domain retry record; this implies that previous attempts to handle
1534 the address had the retry_use_local_parts option turned on. We use
1535 this as an approximation for the destination being like a local
1536 delivery, as in LMTP.
1538 I suspect this new check makes the old local delivery cutoff check
1539 redundant, but I have not verified this so I left the code in place.
1541 TF/02 Correct gecos expansion when From: is a prefix of the username.
1543 Test 0254 submits a message to Exim with the header
1545 Resent-From: f
1547 When I ran the test suite under the user fanf2, Exim expanded
1548 the header to contain my full name, whereas it should have added
1549 a Resent-Sender: header. It erroneously treats any prefix of the
1550 username as equal to the username.
1552 This change corrects that bug.
1554 GF/01 DCC debug and logging tidyup
1555 Error conditions log to paniclog rather than rejectlog.
1556 Debug lines prefixed by "DCC: " to remove any ambiguity.
1558 TF/03 Avoid unnecessary rebuilds of lookup-related code.
1560 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1561 Bug spotted by Jeremy Harris; was flawed since initial commit.
1562 Would have resulted in OCSP responses post-SNI triggering an Exim
1563 NULL dereference and crash.
1565 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1567 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1568 Bug detection, analysis and fix by Samuel Thibault.
1569 Bugzilla 1331, Debian bug #698092.
1571 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1573 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1574 Server implementation by Todd Lyons, client by JH.
1575 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1576 config variable "prdr_enable" controls whether the server
1577 advertises the facility. If the client requests PRDR a new
1578 acl_data_smtp_prdr ACL is called once for each recipient, after
1579 the body content is received and before the acl_smtp_data ACL.
1580 The client is controlled by both of: a hosts_try_prdr option
1581 on the smtp transport, and the server advertisement.
1582 Default client logging of deliveries and rejections involving
1583 PRDR are flagged with the string "PRDR".
1585 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1586 fclose(). Diagnosis by Todd Lyons.
1588 PP/17 Update configure.default to handle IPv6 localhost better.
1589 Patch by Alain Williams (plus minor tweaks).
1590 Bugzilla 880.
1592 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1593 This is now consistent with GnuTLS, and is now documented: the
1594 previous undocumented portable approach to treating the option as
1595 unset was to force an expansion failure. That still works, and
1596 an empty string is now equivalent.
1598 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1599 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1600 not performing validation itself.
1602 PP/20 Added force_command boolean option to pipe transport.
1603 Patch from Nick Koston, of cPanel Inc.
1605 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1606 Bugzilla 321, 823.
1608 TF/04 Added udpsend ACL modifier and hexquote expansion operator
1610 PP/21 Fix eximon continuous updating with timestamped log-files.
1611 Broken in a format-string cleanup in 4.80, missed when I repaired the
1612 other false fix of the same issue.
1613 Report and fix from Heiko Schlichting.
1614 Bugzilla 1363.
1616 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1617 Report from Prashanth Katuri.
1619 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1620 It's SecureTransport, so affects any MacOS clients which use the
1621 system-integrated TLS libraries, including email clients.
1623 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1624 using a MIME ACL for non-SMTP local injection.
1625 Report and assistance in diagnosis by Warren Baker.
1627 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1629 JH/16 Fix comparisons for 64b. Bugzilla 1385.
1631 TL/09 Add expansion variable $authenticated_fail_id to keep track of
1632 last id that failed so it may be referenced in subsequent ACL's.
1634 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1635 Alexander Miroch.
1637 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1638 ldap library initialization, allowing self-signed CA's to be
1639 used. Also properly sets require_cert option later in code by
1640 using NULL (global ldap config) instead of ldap handle (per
1641 session). Bug diagnosis and testing by alxgomz.
1643 TL/12 Enhanced documentation in the ratelimit.pl script provided in
1644 the src/util/ subdirectory.
1646 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1647 renamed to Transport Post Delivery Action by Jeremy Harris, as
1650 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1651 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1652 redis_servers = needs to be configured which will be used by the redis
1653 lookup. Patch from Warren Baker, of The Packet Hub.
1655 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1657 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1658 hostname or reverse DNS when processing a host list. Used suggestions
1659 from multiple comments on this bug.
1661 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1663 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1664 Missed a few lines, added it to make the runtest require no keyboard
1665 interaction.
1667 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1668 contains upper case chars. Make router use caseful_local_part.
1670 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1671 support when GnuTLS has been built with p11-kit.
1674 Exim version 4.80.1
1675 -------------------
1677 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1678 CVE-2012-5671
1679 This, or similar/improved, will also be change PP/11 of 4.82.
1682 Exim version 4.80
1683 -----------------
1685 PP/01 Handle short writes when writing local log-files.
1686 In practice, only affects FreeBSD (8 onwards).
1687 Bugzilla 1053, with thanks to Dmitry Isaikin.
1689 NM/01 Bugzilla 949 - Documentation tweak
1691 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1692 improved.
1694 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1696 PP/02 Implemented gsasl authenticator.
1698 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1700 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1701 `pkg-config foo` for cflags/libs.
1703 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1704 with rest of GSASL and with heimdal_gssapi.
1706 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1707 `pkg-config foo` for cflags/libs for the TLS implementation.
1709 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
1710 properties get this fed in as external SSF. A number of robustness
1711 and debugging improvements to the cyrus_sasl authenticator.
1713 PP/08 cyrus_sasl server now expands the server_realm option.
1715 PP/09 Bugzilla 1214 - Log authentication information in reject log.
1716 Patch by Jeremy Harris.
1718 PP/10 Added dbmjz lookup type.
1720 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
1722 PP/12 MAIL args handles TAB as well as SP, for better interop with
1723 non-compliant senders.
1724 Analysis and variant patch by Todd Lyons.
1726 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
1727 Bug report from Lars Müller <lars@samba.org> (via SUSE),
1728 Patch from Dirk Mueller <dmueller@suse.com>
1730 PP/13 tls_peerdn now print-escaped for spool files.
1731 Observed some $tls_peerdn in wild which contained \n, which resulted
1732 in spool file corruption.
1734 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1735 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1736 or write after TLS renegotiation, which otherwise led to messages
1737 "Got SSL error 2".
1739 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1740 as a tracking header (ie: a signed header comes before the signature).
1741 Patch from Wolfgang Breyha.
1743 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1744 comma-sep list; embedded commas doubled.
1746 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1748 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1749 diagnostics.
1750 Report and patch from Dmitry Banschikov.
1752 PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
1753 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1754 failures. We appear to now support TLS1.1+ with Exim.
1756 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1757 lets Exim select keys and certificates based upon TLS SNI from client.
1758 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1759 before an outbound SMTP session. New log_selector, +tls_sni.
1761 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1762 NULL dereference. Report and patch from Alun Jones.
1764 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1765 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1766 Not seeing resolver debug output on NetBSD, but suspect this is a
1767 resolver implementation change.
1769 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1770 Left warnings. Added "eximon gdb" invocation mode.
1772 PP/21 Defaulting "accept_8bitmime" to true, not false.
1774 PP/22 Added -bw for inetd wait mode support.
1776 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1777 locate the relevant includes and libraries. Made this the default.
1779 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1780 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1782 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
1783 This may cause build issues on older platforms.
1785 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1786 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1787 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1788 Added SNI support via GnuTLS too.
1789 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
1791 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
1793 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
1794 Applied second patch from Janne, implementing suggestion to default
1795 multiple-strings-in-record handling to match SPF spec.
1797 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
1799 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1800 read-only, out of scope).
1801 Patch from Wolfgang Breyha, report from Stuart Northfield.
1803 PP/29 Fix three issues highlighted by clang analyser static analysis.
1804 Only crash-plausible issue would require the Cambridge-specific
1805 iplookup router and a misconfiguration.
1806 Report from Marcin Mirosław.
1808 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1810 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1811 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1812 As part of this, removing so much warning spew let me fix some minor
1813 real issues in debug logging.
1815 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1816 assignment on my part. Fixed.
1818 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1819 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1820 Janne Snabb (who went above and beyond: thank you).
1822 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1823 string otherwise requires a connection and a bunch more work and it's
1824 relatively easy to get wrong. Should also expose TLS library linkage
1825 problems.
1827 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1828 64-bit ${eval} (JH/03).
1830 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
1831 GNU libc to support some of the 64-bit stuff, should not lead to
1832 conflicts. Defined before os.h is pulled in, so if a given platform
1833 needs to override this, it can.
1835 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1836 protection layer was required, which is not implemented.
1837 Bugzilla 1254, patch from Wolfgang Breyha.
1839 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1840 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1841 tls_dhparam take prime identifiers. Also unbreak combination of
1842 OpenSSL+DH_params+TLSSNI.
1844 PP/39 Disable SSLv2 by default in OpenSSL support.
1847 Exim version 4.77
1848 -----------------
1850 PP/01 Solaris build fix for Oracle's LDAP libraries.
1851 Bugzilla 1109, patch from Stephen Usher.
1853 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1855 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1856 whitespace trailer
1858 TF/02 Fix a couple more cases where we did not log the error message
1859 when unlink() failed. See also change 4.74-TF/03.
1861 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1862 lock up or crash if it happened to be inside a call to libc when it
1863 got a SIGUSR1 from exiwhat.
1865 The SIGUSR1 handler appends the current process status to the process
1866 log which is later printed by exiwhat. It used to use the general
1867 purpose logging code to do this, but several functions it calls are
1868 not safe for signals.
1870 The new output code in the SIGUSR1 handler is specific to the process
1871 log, and simple enough that it's easy to inspect for signal safety.
1872 Removing some special cases also simplifies the general logging code.
1873 Removing the spurious timestamps from the process log simplifies
1874 exiwhat.
1876 TF/04 Improved ratelimit ACL condition.
1878 The /noupdate option has been deprecated in favour of /readonly which
1879 has clearer semantics. The /leaky, /strict, and /readonly update modes
1880 are mutually exclusive. The update mode is no longer included in the
1881 database key; it just determines when the database is updated. (This
1882 means that when you upgrade Exim will forget old rate measurements.)
1884 Exim now checks that the per_* options are used with an update mode that
1885 makes sense for the current ACL. For example, when Exim is processing a
1886 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1887 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1888 must specify per_mail/readonly. If you omit the update mode it defaults to
1889 /leaky where that makes sense (as before) or /readonly where required.
1891 The /noupdate option is now undocumented but still supported for
1892 backwards compatibility. It is equivalent to /readonly except that in
1893 ACLs where /readonly is required you may specify /leaky/noupdate or
1894 /strict/noupdate which are treated the same as /readonly.
1896 A useful new feature is the /count= option. This is a generalization
1897 of the per_byte option, so that you can measure the throughput of other
1898 aggregate values. For example, the per_byte option is now equivalent
1899 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1901 The per_rcpt option has been generalized using the /count= mechanism
1902 (though it's more complicated than the per_byte equivalence). When it is
1903 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1904 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1905 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1906 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1907 Note that using per_rcpt with a non-readonly update mode in more than
1908 one ACL will cause the recipients to be double-counted. (The per_mail
1909 and per_byte options don't have this problem.)
1911 The handling of very low rates has changed slightly. If the computed rate
1912 is less than the event's count (usually one) then this event is the first
1913 after a long gap. In this case the rate is set to the same as this event's
1914 count, so that the first message of a spam run is counted properly.
1916 The major new feature is a mechanism for counting the rate of unique
1917 events. The new per_addr option counts the number of different
1918 recipients that someone has sent messages to in the last time period. It
1919 behaves like per_rcpt if all the recipient addresses are different, but
1920 duplicate recipient addresses do not increase the measured rate. Like
1921 the /count= option this is a general mechanism, so the per_addr option
1922 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1923 example, measure the rate that a client uses different sender addresses
1924 with the options per_mail/unique=$sender_address. There are further
1925 details in the main documentation.
1927 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1929 TF/06 Removed a few PCRE remnants.
1931 TF/07 Automatically extract Exim's version number from tags in the git
1932 repository when doing development or release builds.
1934 PP/02 Raise smtp_cmd_buffer_size to 16kB.
1935 Bugzilla 879. Patch from Paul Fisher.
1937 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1938 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1939 Bugzilla 97.
1941 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
1943 PP/05 Variable $av_failed, true if the AV scanner deferred.
1944 Bugzilla 1078. Patch from John Horne.
1946 PP/06 Stop make process more reliably on build failure.
1947 Bugzilla 1087. Patch from Heiko Schlittermann.
1949 PP/07 Make maildir_use_size_file an _expandable_ boolean.
1950 Bugzilla 1089. Patch from Heiko Schlittermann.
1952 PP/08 Handle ${run} returning more data than OS pipe buffer size.
1953 Bugzilla 1131. Patch from Holger Weiß.
1955 PP/09 Handle IPv6 addresses with SPF.
1956 Bugzilla 860. Patch from Wolfgang Breyha.
1958 PP/10 GnuTLS: support TLS 1.2 & 1.1.
1959 Bugzilla 1156.
1960 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1961 Bugzilla 1095.
1963 PP/11 match_* no longer expand right-hand-side by default.
1964 New compile-time build option, EXPAND_LISTMATCH_RHS.
1965 New expansion conditions, "inlist", "inlisti".
1967 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
1969 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
1971 PP/14 fix log_write() format string regression from TF/03.
1972 Bugzilla 1152. Patch from Dmitry Isaikin.
1975 Exim version 4.76
1976 -----------------
1978 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
1980 PP/02 Harmonised TLS library version reporting; only show if debugging.
1981 Layout now matches that introduced for other libraries in 4.74 PP/03.
1983 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
1985 PP/04 New "dns_use_edns0" global option.
1987 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
1988 Bugzilla 1098.
1990 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
1991 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
1993 TK/01 Updated PolarSSL code to 0.14.2.
1994 Bugzilla 1097. Patch from Andreas Metzler.
1996 PP/07 Catch divide-by-zero in ${eval:...}.
1997 Fixes bugzilla 1102.
1999 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2000 Bugzilla 1104.
2002 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
2003 format-string attack -- SECURITY: remote arbitrary code execution.
2005 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2006 time unintentionally subject to list matching rules, letting the header
2007 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2008 arbitrary string expansion). This allowed for information disclosure.
2010 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2011 INT_MIN/-1 -- value coerced to INT_MAX.
2014 Exim version 4.75
2015 -----------------
2017 NM/01 Workaround for PCRE version dependency in version reporting
2018 Bugzilla 1073
2020 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2021 This fixes portability to compilers other than gcc, notably
2022 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2024 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2025 makefiles for portability to HP-UX and POSIX correctness.
2027 PP/01 Permit LOOKUP_foo enabling on the make command-line.
2028 Also via indented variable definition in the Makefile.
2029 (Debugging by Oliver Heesakkers).
2031 PP/02 Restore caching of spamd results with expanded spamd_address.
2032 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2034 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2035 Improves build reliability. Fix from: Frank Elsner
2037 NM/02 Fix wide character breakage in the rfc2047 coding
2038 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2040 NM/03 Allow underscore in dnslist lookups
2041 Fixes bug 1026. Patch from Graeme Fowler
2043 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2044 Code patches from Adam Ciarcinski of NetBSD.
2046 NM/04 Fixed exiqgrep to cope with mailq missing size issue
2047 Fixes bug 943.
2049 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2050 is logged, to avoid truncation. Patch from John Horne.
2052 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2053 Patch from Jakob Hirsch.
2055 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2056 SQL string expansion failure details.
2057 Patch from Andrey Oktyabrski.
2059 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2060 Patch from Simon Arlott.
2062 PP/09 New lookups functionality failed to compile on old gcc which rejects
2063 extern declarations in function scope.
2064 Patch from Oliver Fleischmann
2066 PP/10 Use sig_atomic_t for flags set from signal handlers.
2067 Check getgroups() return and improve debugging.
2068 Fixed developed for diagnosis in bug 927 (which turned out to be
2069 a kernel bug).
2071 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2072 Patch from Mark Zealey.
2074 PP/12 Bugzilla 1056: Improved spamd server selection.
2075 Patch from Mark Zealey.
2077 PP/13 Bugzilla 1086: Deal with maildir quota file races.
2078 Based on patch from Heiko Schlittermann.
2080 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2081 Patch from Uwe Doering, sign-off by Michael Haardt.
2083 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2084 variable declaration deep within a block. Bug and patch from
2085 Dennis Davis.
2087 PP/15 lookups-Makefile IRIX compatibility coercion.
2089 PP/16 Make DISABLE_DKIM build knob functional.
2091 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2092 Patch by Simon Arlott
2094 TF/03 Fix valgrind.h portability to C89 compilers that do not support
2095 variable argument macros. Our copy now differs from upstream.
2098 Exim version 4.74
2099 -----------------
2101 TF/01 Failure to get a lock on a hints database can have serious
2102 consequences so log it to the panic log.
2104 TF/02 Log LMTP confirmation messages in the same way as SMTP,
2105 controlled using the smtp_confirmation log selector.
2107 TF/03 Include the error message when we fail to unlink a spool file.
2109 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2110 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2111 for maintaining out-of-tree patches for some time.
2113 PP/01 Bugzilla 139: Documentation and portability issues.
2114 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2115 Handle per-OS dynamic-module compilation flags.
2117 PP/02 Let /dev/null have normal permissions.
2118 The 4.73 fixes were a little too stringent and complained about the
2119 permissions on /dev/null. Exempt it from some checks.
2120 Reported by Andreas M. Kirchwitz.
2122 PP/03 Report version information for many libraries, including
2123 Exim version information for dynamically loaded libraries. Created
2124 version.h, now support a version extension string for distributors
2125 who patch heavily. Dynamic module ABI change.
2127 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2128 privilege escalation vulnerability whereby the Exim run-time user
2129 can cause root to append content of the attacker's choosing to
2130 arbitrary files.
2132 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2133 (Wolfgang Breyha)
2135 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2136 If dropping privileges for untrusted macros, we disabled normal logging
2137 on the basis that it would fail; for the Exim run-time user, this is not
2138 the case, and it resulted in successful deliveries going unlogged.
2139 Fixed. Reported by Andreas Metzler.
2142 Exim version 4.73
2143 -----------------
2145 PP/01 Date: & Message-Id: revert to normally being appended to a message,
2146 only prepend for the Resent-* case. Fixes regression introduced in
2147 Exim 4.70 by NM/22 for Bugzilla 607.
2149 PP/02 Include check_rfc2047_length in configure.default because we're seeing
2150 increasing numbers of administrators be bitten by this.
2152 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2154 PP/03 Bugzilla 994: added openssl_options main configuration option.
2156 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2158 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
2160 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2162 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
2163 without a peer certificate, leading to a segfault because of an
2164 assumption that peers always have certificates. Be a little more
2165 paranoid. Problem reported by Martin Tscholak.
2167 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2168 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2169 NB: ClamAV planning to remove STREAM in "middle of 2010".
2170 CL also introduces -bmalware, various -d+acl logging additions and
2171 more caution in buffer sizes.
2173 PP/09 Implemented reverse_ip expansion operator.
2175 PP/10 Bugzilla 937: provide a "debug" ACL control.
2177 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2179 PP/12 Bugzilla 973: Implement --version.
2181 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2183 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2185 PP/15 Bugzilla 816: support multiple condition rules on Routers.
2187 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
2188 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2189 ignore trailing whitespace.
2191 JJ/02 prevent non-panic DKIM error from being sent to paniclog
2193 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2194 "exim" to be used
2196 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2197 Notification from Dr Andrew Aitchison.
2199 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2200 ExtendedDetectionInfo response format.
2201 Notification from John Horne.
2203 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2204 compatible.
2206 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2207 XSL and documented dependency on system catalogs, with examples of how
2208 it normally works.
2210 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2211 access.
2213 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2214 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2215 configuration file which is writeable by the Exim user or group.
2217 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2218 of configuration files to cover files specified with the -C option if
2219 they are going to be used with root privileges, not just the default
2220 configuration file.
2222 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2223 option (effectively making it always true).
2225 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2226 files to be used while preserving root privileges.
2228 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2229 that rogue child processes cannot use them.
2231 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2232 run-time user, instead of root.
2234 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2235 Exim run-time user without dropping privileges.
2237 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2238 result string, instead of calling string_vformat() twice with the same
2239 arguments.
2242 for other users. Others should always drop root privileges if they use
2243 -C on the command line, even for a whitelisted configure file.
2247 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2250 Exim version 4.72
2251 -----------------
2253 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2254 $data_path, and $header_path variables; fixed documentation bugs and
2255 typos
2257 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2258 exipick to access non-standard spools, including the "frozen" queue
2259 (Finput)
2261 NM/01 Bugzilla 965: Support mysql stored procedures.
2262 Patch from Alain Williams
2264 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2266 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2267 Patch from Andreas Metzler
2269 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2270 Patch from Kirill Miazine
2272 NM/05 Bugzilla 671: Added umask to procmail example.
2274 JJ/03 installed exipick 20100323.0, fixing doc bug
2276 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
2277 directory. Notification and patch from Dan Rosenberg.
2279 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2281 TK/02 Improve log output when DKIM signing operation fails.
2283 MH/01 Treat the transport option dkim_domain as a colon separated
2284 list, not as a single string, and sign the message with each element,
2285 omitting multiple occurences of the same signer.
2287 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2288 Bugzilla 985, 986. Patch by Simon Arlott
2290 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
2291 Patch by Simon Arlott
2293 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
2294 MBX locking. Notification from Dan Rosenberg.
2297 Exim version 4.71
2298 -----------------
2300 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
2302 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2304 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2306 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2308 NM/04 Bugzilla 915: Flag broken perl installation during build.
2311 Exim version 4.70
2312 -----------------
2314 TK/01 Added patch by Johannes Berg that expands the main option
2315 "spamd_address" if it starts with a dollar sign.
2317 TK/02 Write list of recipients to X-Envelope-Sender header when building
2318 the mbox-format spool file for content scanning (suggested by Jakob
2319 Hirsch).
2321 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2322 (http://www.dcc-servers.net/) support via dccifd. Activated by
2323 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
2325 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2326 by Mark Daniel Reidel <mr@df.eu>.
2328 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2329 When building exim an external PCRE library is now needed -
2330 PCRE is a system library on the majority of modern systems.
2331 See entry on PCRE_LIBS in EDITME file.
2333 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2334 conversation. Added nologin parameter to request.
2335 Patch contributed by Kirill Miazine.
2337 TF/01 Do not log submission mode rewrites if they do not change the address.
2339 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2341 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
2342 log files in place. Contributed by Roberto Lima.
2344 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
2346 TF/03 Bugzilla 615: When checking the local_parts router precondition
2347 after a local_part_suffix or local_part_prefix option, Exim now
2348 does not use the address's named list lookup cache, since this
2349 contains cached lookups for the whole local part.
2351 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
2352 Robert Millan. Documentation is in experimental-spec.txt.
2354 TF/04 Bugzilla 668: Fix parallel build (make -j).
2356 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
2358 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
2359 Patch provided by Jan Srzednicki.
2361 TF/05 Leading white space used to be stripped from $spam_report which
2362 wrecked the formatting. Now it is preserved.
2364 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2365 that they are available at delivery time.
2367 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2369 TF/08 TLS error reporting now respects the incoming_interface and
2370 incoming_port log selectors.
2372 TF/09 Produce a more useful error message if an SMTP transport's hosts
2373 setting expands to an empty string.
2375 NM/06 Bugzilla 744: EXPN did not work under TLS.
2376 Patch provided by Phil Pennock.
2378 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
2379 Patch provided by Richard Godbee.
2381 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
2382 acl_smtp_notquit, added index entry.
2384 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2385 Patch provided by Eugene Bujak.
2387 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2388 accept(). Patch provided by Maxim Dounin.
2390 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
2391 Patch provided by Phil Pennock.
2393 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2395 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
2396 Patch provided by Brad "anomie" Jorsch.
2398 NM/14 Bugzilla 622: Added timeout setting to transport filter.
2399 Patch provided by Dean Brooks.
2401 TK/05 Add native DKIM support (does not depend on external libraries).
2403 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
2404 Patch provided by Graeme Fowler.
2406 NM/16 Bugzilla 851: Documentation example syntax fix.
2408 NM/17 Changed NOTICE file to remove references to embedded PCRE.
2410 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2411 lsearch.
2413 NM/19 Bugzilla 745: TLS version reporting.
2414 Patch provided by Phil Pennock.
2416 NM/20 Bugzilla 167: bool: condition support.
2417 Patch provided by Phil Pennock.
2419 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2420 clients. Patch provided by Phil Pennock.
2422 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2423 Patch provided by Brad "anomie" Jorsch.
2425 NM/23 Bugzilla 687: Fix misparses in eximstats.
2426 Patch provided by Heiko Schlittermann.
2428 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2429 Patch provided by Heiko Schlittermann.
2431 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
2432 plus update to original patch.
2434 NM/26 Bugzilla 799: Documentation correction for ratelimit.
2436 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2437 Patch provided by David Brownlee.
2439 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
2441 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
2443 NM/30 Bugzilla 888: TLS documentation bugfixes.
2445 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
2447 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
2448 Unlike the original bugzilla I have changed all shell scripts in src tree.
2450 NM/33 Bugzilla 898: Transport filter timeout fix.
2451 Patch by Todd Rinaldo.
2453 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
2454 Patch by Serge Demonchaux.
2456 NM/35 Bugzilla 39: Base64 decode bug fixes.
2457 Patch by Jakob Hirsch.
2459 NM/36 Bugzilla 909: Correct connect() call in dcc code.
2461 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
2463 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
2465 NM/39 Bugzilla 911: Fixed MakeLinks build script.
2468 Exim version 4.69
2469 -----------------
2471 TK/01 Add preliminary DKIM support. Currently requires a forked version of
2472 ALT-N's libdkim that I have put here:
2473 http://duncanthrax.net/exim-experimental/
2475 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2476 were called 'true' and it seems that C99 defines that as a reserved
2477 keyword to be used with 'bool' variable types. That means you could
2478 not include C99-style headers which use bools without triggering
2479 build errors in sieve.c.
2481 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2482 as mailq or other aliases. Changed the --help handling significantly
2483 to do whats expected. exim_usage() emits usage/help information.
2485 SC/01 Added the -bylocaldomain option to eximstats.
2487 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
2489 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
2491 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
2494 Exim version 4.68
2495 -----------------
2497 PH/01 Another patch from the Sieve maintainer.
2499 PH/02 When an IPv6 address is converted to a string for single-key lookup
2500 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2501 dots are used instead of colons so that keys in lsearch files need not
2502 contain colons. This was done some time before quoting was made available
2503 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2504 (notated using the quote facility) so as to distinguish them from IPv4
2505 keys. This meant that lookups for IP addresses in host lists did not work
2506 for iplsearch lookups.
2508 This has been fixed by arranging for IPv6 addresses to be expressed with
2509 colons if the lookup type is iplsearch. This is not incompatible, because
2510 previously such lookups could never work.
2512 The situation is now rather anomalous, since one *can* have colons in
2513 ordinary lsearch keys. However, making the change in all cases is
2514 incompatible and would probably break a number of configurations.
2516 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2517 version.
2519 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2520 conversion specification without a maximum field width, thereby enabling
2521 a rogue spamd server to cause a buffer overflow. While nobody in their
2522 right mind would setup Exim to query an untrusted spamd server, an
2523 attacker that gains access to a server running spamd could potentially
2524 exploit this vulnerability to run arbitrary code as the Exim user.
2526 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2527 $primary_hostname instead of what libspf2 thinks the hosts name is.
2529 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2530 a directory entry by the name of the lookup key. Previously, if a
2531 symlink pointed to a non-existing file or a file in a directory that
2532 Exim lacked permissions to read, a lookup for a key matching that
2533 symlink would fail. Now it is enough that a matching directory entry
2534 exists, symlink or not. (Bugzilla 503.)
2536 PH/03 The body_linecount and body_zerocount variables are now exported in the
2537 local_scan API.
2539 PH/04 Added the $dnslist_matched variable.
2541 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2542 This means they are set thereafter only if the connection becomes
2543 encrypted.
2545 PH/06 Added the client_condition to authenticators so that some can be skipped
2546 by clients under certain conditions.
2548 PH/07 The error message for a badly-placed control=no_multiline_responses left
2549 "_responses" off the end of the name.
2551 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2553 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2554 (without spaces) instead of just copying the configuration text.
2556 PH/10 Added the /noupdate option to the ratelimit ACL condition.
2558 PH/11 Added $max_received_linelength.
2560 PH/12 Added +ignore_defer and +include_defer to host lists.
2562 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2563 way in which PCRE > 7.0 is built.
2565 PH/14 Implemented queue_only_load_latch.
2567 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2568 MAIL command. The effect was to mangle the value on 64-bit systems.
2570 PH/16 Another patch from the Sieve maintainer.
2572 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2574 PH/18 If a system quota error occurred while trying to create the file for
2575 a maildir delivery, the message "Mailbox is full" was not appended to the
2576 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2577 only to a quota excession during the actual writing of the file.
2579 PH/19 It seems that peer DN values may contain newlines (and other non-printing
2580 characters?) which causes problems in log lines. The DN values are now
2581 passed through string_printing() before being added to log lines.
2583 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
2584 and InterBase are left for another time.)
2586 PH/21 Added message_body_newlines option.
2588 PH/22 Guard against possible overflow in moan_check_errorcopy().
2590 PH/23 POSIX allows open() to be a macro; guard against that.
2592 PH/24 If the recipient of an error message contained an @ in the local part
2593 (suitably quoted, of course), incorrect values were put in $domain and
2594 $local_part during the evaluation of errors_copy.
2597 Exim version 4.67
2598 -----------------
2600 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2601 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2602 Jan Srzednicki.
2604 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2605 issue a MAIL command.
2607 PH/02 In an ACL statement such as
2609 deny dnslists = X!= : X=
2611 if a client was not listed at all, or was listed with a value other than
2612, in the X list, but was listed with in the Y list,
2613 the condition was not true (as it should be), so access was not denied.
2614 The bug was that the ! inversion was incorrectly passed on to the second
2615 item. This has been fixed.
2617 PH/03 Added additional dnslists conditions == and =& which are different from
2618 = and & when the dns lookup returns more than one IP address.
2620 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2621 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2623 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2624 FSYNC, which compiles an option called disable_fsync that allows for
2625 bypassing fsync(). The documentation is heavily laced with warnings.
2627 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2629 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2630 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2631 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2632 including adding "make clean"; (3) Added -fPIC when compiling the test
2633 dynamically loaded module, to get rid of a warning.
2635 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2636 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2637 = 0s. The bug is otherwise harmless.
2639 PH/07 There was a bug in the dovecot authenticator such that the value of
2640 $auth1 could be overwritten, and so not correctly preserved, after a
2641 successful authentication. This usually meant that the value preserved by
2642 the server_setid option was incorrect.
2644 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2646 PH/09 Installed PCRE release 7.0.
2648 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2649 run for batched SMTP input. It is now run at the start of every message
2650 in the batch. While fixing this I discovered that the process information
2651 (output by running exiwhat) was not always getting set for -bs and -bS
2652 input. This is fixed, and it now also says "batched" for BSMTP.
2654 PH/11 Added control=no_pipelining.
2656 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2657 patch, slightly modified), and move the expansion of helo_data till after
2658 the connection is made in the smtp transport (so it can use these
2659 values).
2661 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2663 PH/14 Added log_selector = +pid.
2665 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2667 PH/16 Add ${if forany and ${if forall.
2669 PH/17 Added dsn_from option to vary the From: line in DSNs.
2671 PH/18 Flush SMTP output before performing a callout, unless control =
2672 no_callout_flush is set.
2674 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2675 was true (the default) a successful delivery failed to delete the retry
2676 item, thus causing premature timeout of the address. The bug is now
2677 fixed.
2679 PH/20 Added hosts_avoid_pipelining to the smtp transport.
2681 PH/21 Long custom messages for fakedefer and fakereject are now split up
2682 into multiline responses in the same way that messages for "deny" and
2683 other ACL rejections are.
2685 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2686 with slight modification.
2688 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2689 draft, changing the syntax and factoring some duplicate code".
2691 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2692 for deliveries of the second and subsequent messages over the same SMTP
2693 connection.
2695 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2696 ${reduce, with only minor "tidies".
2698 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2700 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2701 expansion side effects.
2703 PH/27 When a message times out after an over-quota error from an Exim-imposed
2704 quota, the bounce message says "mailbox is full". This message was not
2705 being given when it was a system quota that was exceeded. It now should
2706 be the same.
2708 MH/03 Made $recipients available in local_scan(). local_scan() already has
2709 better access to the recipient list through recipients_list[], but
2710 $recipients can be useful in postmaster-provided expansion strings.
2712 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2713 in the case of a MAIL command with additional options following the
2714 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2715 were accidentally chopped off.
2717 PH/29 SMTP synchronization checks are implemented when a command is read -
2718 there is a check that no more input is waiting when there shouldn't be
2719 any. However, for some commands, a delay in an ACL can mean that it is
2720 some time before the response is written. In this time, more input might
2721 arrive, invalidly. So now there are extra checks after an ACL has run for
2722 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2723 pipelining has not been advertised.
2725 PH/30 MH's patch to allow iscntrl() characters to be list separators.
2727 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2728 returned in the SMTP response when smtp_return_error_details was false.
2729 This has been fixed.
2731 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2732 instead of the C I/O that was originally supplied, because problems were
2733 reported on Solaris.
2735 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2736 Exim which did not show up earlier: it was assuming that a call to
2737 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2738 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2739 was a macro that became an assignment, so it seemed to work. This has
2740 changed to a proper function call with a void return, hence the compile
2741 error. Exim's code has been fixed.
2743 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2744 cpus.
2746 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2748 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2750 PH/37 If a message is not accepted after it has had an id assigned (e.g.
2751 because it turns out to be too big or there is a timeout) there is no
2752 "Completed" line in the log. When some messages of this type were
2753 selected by exigrep, they were listed as "not completed". Others were
2754 picked up by some special patterns. I have improved the selection
2755 criteria to be more general.
2757 PH/38 The host_find_failed option in the manualroute router can now be set
2758 to "ignore", to completely ignore a host whose IP address cannot be
2759 found. If all hosts are ignored, the behaviour is controlled by the new
2760 host_all_ignored option.
2762 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2763 homing or because of multiple MX records with /mx) generated more than
2764 one IP address, and the following item turned out to be the local host,
2765 all the secondary addresses of the first item were incorrectly removed
2766 from the list, along with the local host and any following hosts (which
2767 is what is supposed to happen).
2769 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2770 whoever called Exim into the -H file. In the case of the daemon it was
2771 behaving confusingly. When first started, it used values for whoever
2772 started the daemon, but after a SIGHUP it used the Exim user (because it
2773 calls itself on a restart). I have changed the code so that it now always
2774 uses the Exim user.
2776 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2777 message are rejected with the same error (e.g. no authentication or bad
2778 sender address), and a DATA command is nevertheless sent (as can happen
2779 with PIPELINING or a stupid MUA), the error message that was given to the
2780 RCPT commands is included in the rejection of the DATA command. This is
2781 intended to be helpful for MUAs that show only the final error to their
2782 users.
2784 PH/42 Another patch from the Sieve maintainer.
2786 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2787 Eximstats - Fixed some broken HTML links and added missing column headers
2788 (Jez Hancock).
2789 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2790 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2792 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2794 PH/43 Yet another patch from the Sieve maintainer.
2796 PH/44 I found a way to check for a TCP/IP connection going away before sending
2797 the response to the final '.' that terminates a message, but only in the
2798 case where the client has not sent further data following the '.'
2799 (unfortunately, this is allowed). However, in many cases there won't be
2800 any further data because there won't be any more messages to send. A call
2801 to select() can be used: if it shows that the input is "ready", there is
2802 either input waiting, or the socket has been closed. An attempt to read
2803 the next input character can distinguish the two cases. Previously, Exim
2804 would have sent an OK response which the client would never have see.
2805 This could lead to message repetition. This fix should cure that, at
2806 least in a lot of common cases.
2808 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2809 advertised in response to EHLO.
2812 Exim version 4.66
2813 -----------------
2815 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2816 fixed by 4.65/MH/01 (is this a record?) are fixed:
2818 (i) An empty string was always treated as zero by the numeric comparison
2819 operators. This behaviour has been restored.
2821 (ii) It is documented that the numeric comparison operators always treat
2822 their arguments as decimal numbers. This was broken in that numbers
2823 starting with 0 were being interpreted as octal.
2825 While fixing these problems I realized that there was another issue that
2826 hadn't been noticed. Values of message_size_limit (both the global option
2827 and the transport option) were treated as octal if they started with 0.
2828 The documentation was vague. These values are now always treated as
2829 decimal, and I will make that clear in the documentation.
2832 Exim version 4.65
2833 -----------------
2835 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2836 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2837 versions. (#438)
2839 MH/01 Don't check that the operands of numeric comparison operators are
2840 integers when their expansion is in "skipping" mode (fixes bug
2841 introduced by 4.64-PH/07).
2843 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2844 child addresses, Exim now panics and dies. Previously, because the count
2845 is held in a short int, deliveries were likely to be lost. As such a
2846 large number of recipients for a single message is ridiculous
2847 (performance will be very, very poor), I have chosen to impose a limit
2848 rather than extend the field.
2851 Exim version 4.64
2852 -----------------
2854 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2855 leftover -K file (the existence of which was triggered by #402).
2856 While we were at it, introduced process PID as part of the -K
2857 filename. This should rule out race conditions when creating
2858 these files.
2860 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2861 processing considerably. Previous code took too long for large mails,
2862 triggering a timeout which in turn triggers #401.
2864 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2865 in the DK code in transports.c. sendfile() is not really portable,
2866 hence the _LINUX specificness.
2868 TF/01 In the add_headers option to the mail command in an Exim filter,
2869 there was a bug that Exim would claim a syntax error in any
2870 header after the first one which had an odd number of characters
2871 in the field name.
2873 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2874 callout verification, Exim cached a "reject" for the entire domain. This
2875 is correct for most verifications, but it is not correct for a recipient
2876 verification with use_sender or use_postmaster set, because in that case
2877 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2878 case of MAIL FROM:<> rejection from other early rejections (e.g.
2879 rejection of HELO). When verifying a recipient using a non-null MAIL
2880 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2881 Whatever the result of the callout, the value of the domain cache is
2882 left unchanged (for any other kind of callout, getting as far as trying
2883 RCPT means that the domain itself is ok).
2885 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2886 gcc 4.1.1 threw up.
2888 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2889 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2890 session, the daemon ignores ECONNECT errors and logs others; it now
2891 ignores EPIPE as well.
2893 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2894 (quoted-printable decoding).
2896 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
2897 later the small subsequent patch to fix an introduced bug.
2899 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2901 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2903 PH/08 An error is now given if message_size_limit is specified negative.
2905 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
2906 to be given (somewhat) arbitrary names.
2908 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2909 in 4.64-PH/09.
2911 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2912 miscellaneous code fixes
2914 PH/10 Added the log_reject_target ACL modifier to specify where to log
2915 rejections.
2917 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2918 hostname. This is wrong, because it relates to the incoming message (and
2919 probably the interface on which it is arriving) and not to the outgoing
2920 callout (which could be using a different interface). This has been
2921 changed to use the value of the helo_data option from the smtp transport
2922 instead - this is what is used when a message is actually being sent. If
2923 there is no remote transport (possible with a router that sets up host
2924 addresses), $smtp_active_hostname is used.
2926 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
2927 tweaks were necessary in order to get it to work (see also 21 below):
2928 (a) The code assumed that strncpy() returns a negative number on buffer
2929 overflow, which isn't the case. Replaced with Exim's string_format()
2930 function.
2931 (b) There were several signed/unsigned issues. I just did the minimum
2932 hacking in of casts. There is scope for a larger refactoring.
2933 (c) The code used strcasecmp() which is not a standard C function.
2934 Replaced with Exim's strcmpic() function.
2935 (d) The code set only $1; it now sets $auth1 as well.
2936 (e) A simple test gave the error "authentication client didn't specify
2937 service in request". It would seem that Dovecot has changed its
2938 interface. Fortunately there's a specification; I followed it and
2939 changed what the client sends and it appears to be working now.
2941 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
2942 decoding.
2944 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
2945 address A is aliased to B and C, where B exists and C does not. Without
2946 -v the output is "A verified" because verification stops after a
2947 successful redirection if more than one address is generated. However,
2948 with -v the child addresses are also verified. Exim was outputting "A
2949 failed to verify" and then showing the successful verification for C,
2950 with its parentage. It now outputs "B failed to verify", showing B's
2951 parentage before showing the successful verification of C.
2953 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
2954 look up a TXT record in a specific list after matching in a combined
2955 list.
2957 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2958 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2959 they consult the DNS. I had assumed they would set it the way they
2960 wanted; and indeed my experiments on Linux seem to show that in some
2961 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2962 To be on the safe side, however, I have now made the interface to
2963 host_find_byname() similar to host_find_bydns(), with an argument
2964 containing the DNS resolver options. The host_find_byname() function now
2965 sets these options at its start, just as host_find_bydns() does. The smtp
2966 transport options dns_qualify_single and dns_search_parents are passed to
2967 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
2968 of host_find_byname() use the default settings of RES_DEFNAMES
2969 (qualify_single) but not RES_DNSRCH (search_parents).
2971 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
2972 spool_read_header() do less string testing, by means of a preliminary
2973 switch on the second character of optional "-foo" lines. (This is
2974 overdue, caused by the large number of possibilities that now exist.
2975 Originally there were few.) While I was there, I also converted the
2976 str(n)cmp tests so they don't re-test the leading "-" and the first
2977 character, in the hope this might squeeze out yet more improvement.
2979 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
2980 flag allowing group syntax was set by the header_syntax check but not
2981 turned off, possible causing trouble later; (2) The flag was not being
2982 set at all for the header_verify test, causing "group"-style headers to
2983 be rejected. I have now set it in this case, and also caused header_
2984 verify to ignore an empty address taken from a group. While doing this, I
2985 came across some other cases where the code for allowing group syntax
2986 while scanning a header line wasn't quite right (mostly, not resetting
2987 the flag correctly in the right place). These bugs could have caused
2988 trouble for malformed header lines. I hope it is now all correct.
2990 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
2991 with the "reply" argument non-NULL. The code, however (which originally
2992 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
2993 but it didn't always do it. This confused somebody who was copying the
2994 code for some other use. I have removed all the tests.
2996 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
2997 feature that was used to support insecure browsers during the U.S. crypto
2998 embargo. It requires special client support, and Exim is probably the
2999 only MTA that supported it -- and would never use it because real RSA is
3000 always available. This code has been removed, because it had the bad
3001 effect of slowing Exim down by computing (never used) parameters for the
3002 RSA_EXPORT functionality.
3004 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
3005 authenticator to fail if there's a tab character in the incoming data
3006 (there should never be unless someone is messing about, as it's supposed
3007 to be base64-encoded). Also added, on Timo's advice, the "secured" option
3008 if the connection is using TLS or if the remote IP is the same as the
3009 local IP, and the "valid-client-cert option" if a client certificate has
3010 been verified.
3012 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
3013 authenticators. This can be used for authorization after authentication
3014 succeeds. (In the case of plaintext, it servers for both authentication
3015 and authorization.)
3017 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
3018 if any retry times were supplied.
3020 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
3021 connection, where there is no client IP address to check. In this
3022 situation, the verify now always succeeds.
3024 PH/25 Applied John Jetmore's -Mset patch.
3026 PH/26 Added -bem to be like -Mset, but loading a message from a file.
3028 PH/27 In a string expansion for a processed (not raw) header when multiple
3029 headers of the same name were present, leading whitespace was being
3030 removed from all of them, but trailing whitespace was being removed only
3031 from the last one. Now trailing whitespace is removed from each header
3032 before concatenation. Completely empty headers in a concatenation (as
3033 before) are ignored.
3035 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
3036 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
3038 PH/29 [Removed. This was a change that I later backed out, and forgot to
3039 correct the ChangeLog entry (that I had efficiently created) before
3040 committing the later change.]
3042 PH/30 Exim was sometimes attempting to deliver messages that had suffered
3043 address errors (4xx response to RCPT) over the same connection as other
3044 messages routed to the same hosts. Such deliveries are always "forced",
3045 so retry times are not inspected. This resulted in far too many retries
3046 for the affected addresses. The effect occurred only when there were more
3047 hosts than the hosts_max_try setting in the smtp transport when it had
3048 the 4xx errors. Those hosts that it had tried were not added to the list
3049 of hosts for which the message was waiting, so if all were tried, there
3050 was no problem. Two fixes have been applied:
3052 (i) If there are any address or message errors in an SMTP delivery, none
3053 of the hosts (tried or untried) are now added to the list of hosts
3054 for which the message is waiting, so the message should not be a
3055 candidate for sending over the same connection that was used for a
3056 successful delivery of some other message. This seems entirely
3057 reasonable: after all the message is NOT "waiting for some host".
3058 This is so "obvious" that I'm not sure why it wasn't done
3059 previously. Hope I haven't missed anything, but it can't do any
3060 harm, as the worst effect is to miss an optimization.
3062 (ii) If, despite (i), such a delivery is accidentally attempted, the
3063 routing retry time is respected, so at least it doesn't keep
3064 hammering the server.
3066 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
3067 in ${readsocket because some servers need this prod.
3069 PH/32 Added some extra debug output when updating a wait-xxx database.
3071 PH/33 The hint "could be header name not terminated by colon", which has been
3072 given for certain expansion errors for a long time, was not being given
3073 for the ${if def:h_colon_omitted{... case.
3075 PH/34 The spec says: "With one important exception, whenever a domain list is
3076 being scanned, $domain contains the subject domain." There was at least
3077 one case where this was not true.
3079 PH/35 The error "getsockname() failed: connection reset by peer" was being
3080 written to the panic log as well as the main log, but it isn't really
3081 panic-worthy as it just means the connection died rather early on. I have
3082 removed the panic log writing for the ECONNRESET error when getsockname()
3083 fails.
3085 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
3086 runs only) independently of the message's sender address. This meant
3087 that, if the 4xx error was in fact related to the sender, a different
3088 message to the same recipient with a different sender could confuse
3089 things. In particular, this can happen when sending to a greylisting
3090 server, but other circumstances could also provoke similar problems.
3091 I have changed the default so that the retry time for these errors is now
3092 based a combination of the sender and recipient addresses. This change
3093 can be overridden by setting address_retry_include_sender=false in the
3094 smtp transport.
3096 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
3097 remote server are returned as part of bounce messages. This was not
3098 happening for LMTP over a pipe (the lmtp transport), but now it is the
3099 same for both kinds of LMTP.
3101 PH/38 Despite being documented as not happening, Exim was rewriting addresses
3102 in header lines that were in fact CNAMEs. This is no longer the case.
3104 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
3105 and queue runs started by the daemon processed all messages. This has
3106 been fixed so that -R and -S can now usefully be given with -q<time>.
3108 PH/40 Import PCRE release 6.7 (fixes some bugs).
3110 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
3112 PH/42 Give an error if -q is specified more than once.
3114 PH/43 Renamed the variables $interface_address and $interface_port as
3115 $received_ip_address and $received_port, to make it clear that these
3116 values apply to message reception, and not to the outgoing interface when
3117 a message is delivered. (The old names remain recognized, of course.)
3119 PH/44 There was no timeout on the connect() call when using a Unix domain
3120 socket in the ${readsocket expansion. There now is.
3122 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
3123 be meaningful with "accept".
3125 SC/01 Eximstats V1.43
3126 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
3128 SC/02 Eximstats V1.44
3129 Use a glob alias rather than an array ref in the generated
3130 parser. This improves both readability and performance.
3132 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
3133 Collect SpamAssassin and rejection statistics.
3134 Don't display local sender or destination tables unless
3135 there is data to show.
3136 Added average volumes into the top table text output.
3138 SC/04 Eximstats V1.46
3139 Collect data on the number of addresses (recipients)
3140 as well as the number of messages.
3142 SC/05 Eximstats V1.47
3143 Added 'Message too big' to the list of mail rejection
3144 reasons (thanks to Marco Gaiarin).
3146 SC/06 Eximstats V1.48
3147 Mainlog lines which have GMT offsets and are too short to
3148 have a flag are now skipped.
3150 SC/07 Eximstats V1.49 (Alain Williams)
3151 Added the -emptyok flag.
3153 SC/08 Eximstats V1.50
3154 Fixes for obtaining the IP address from reject messages.
3156 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
3157 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
3158 whitespace changes from 4.64-PH/27
3160 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
3161 match 4.64-PH/13
3163 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
3164 are found, allow negative numbers in numeric criteria)
3166 JJ/06 exipick.20061117.2, added new $message_body_missing variable
3168 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
3169 to match changes made in 4.64-PH/43
3171 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
3173 PH/47 Put in an explicit test for a DNS lookup of an address record where the
3174 "domain" is actually an IP address, and force a failure. This locks out
3175 those revolvers/nameservers that support "A-for-A" lookups, in
3176 contravention of the specifications.
3178 PH/48 When a host name was looked up from an IP address, and the subsequent
3179 forward lookup of the name timed out, the host name was left in
3180 $sender_host_name, contrary to the specification.
3182 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
3183 restricted to single-key lookups, Exim was not diagnosing an error if
3184 * or *@ was used with a query-style lookup.
3186 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
3188 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
3189 long ago, but noone interested enough thought of it. Let's just say that
3190 the "1.1" means that there are some new functions that weren't there at
3191 some point in the past.
3193 PH/51 Error processing for expansion failure of helo_data from an smtp
3194 transport during callout processing was broken.
3196 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
3197 tested/used via the -bh/-bhc/-bs options.
3199 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
3200 bug, fixed in subsequent PCRE releases).
3202 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
3203 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
3205 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
3208 Exim version 4.63
3209 -----------------
3211 SC/01 Use a glob alias rather than an array ref in eximstats generated
3212 parser. This improves both readability and performance.
3214 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
3215 Don't display local sender or destination tables in eximstats unless
3216 there is data to show.
3217 Added average volumes into the eximstats top table text output.
3219 SC/03 Collect data on the number of addresses (recipients) as well
3220 as the number of messages in eximstats.
3222 TF/01 Correct an error in the documentation for the redirect router. Exim
3223 does (usually) call initgroups() when daemonizing.
3225 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
3226 with consistent privilege compared to when running as a daemon.
3228 TF/03 Note in the spec that $authenticated_id is not set for local
3229 submissions from trusted users.
3231 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
3232 Thanks to Dean Brooks <dean@iglou.com> for the patch.
3234 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
3235 by adding some example configuration directives to the default
3236 configuration file. A little bit of work is required to uncomment the
3237 directives and define how usernames and passwords are checked, but
3238 there is now a framework to start from.
3240 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
3241 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
3242 without this. I don't know how relevant this is to other LDAP libraries.
3244 PH/02 Add the verb name to the "unknown ACL verb" error.
3246 PH/03 Magnus Holmgren's patch for filter_prepend_home.
3248 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
3250 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
3251 directory not expanded when it should be if an expanded home directory
3252 was set for the address (which is overridden by the transport).
3254 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
3255 libradius.
3257 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
3258 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
3259 because it is too late at that time, and has no effect.
3261 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
3262 security issue with \' (bugzilla #107). I could not use the
3263 PQescapeStringConn() function, because it needs a PGconn value as one of
3264 its arguments.
3266 PH/08 When testing addresses using -bt, indicate those final addresses that
3267 are duplicates that would not cause an additional delivery. At least one
3268 person was confused, thinking that -bt output corresponded to deliveries.
3269 (Suppressing duplicates isn't a good idea as you lose the information
3270 about possibly different redirections that led to the duplicates.)
3272 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
3273 systems where poll() doesn't work, in particular OS X.
3275 PH/10 Added more information to debugging output for retry time not reached.
3277 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
3278 operations in malware.c.
3280 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
3281 signatures.
3283 PH/13 If write_rejectlog was set false when logging was sent to syslog with
3284 syslog_duplication set false, log lines that would normally be written
3285 both the the main log and to the reject log were not written to syslog at
3286 all.
3288 PH/14 In the default configuration, change the use of "message" in ACL warn
3289 statements to "add_header".
3291 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
3292 not followed by a command (e.g. "seen endif").
3294 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
3295 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
3296 latter.
3298 PH/17 Added extra conditions to the default value of delay_warning_condition
3299 so that it is now:
3301 ${if or { \
3302 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
3303 { match{$h_precedence:}{(?i)bulk|list|junk} } \
3304 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
3305 }{no}{yes}}
3307 The Auto-Submitted: and various List- headers are standardised, whereas I
3308 don't think Precedence: ever was.
3310 PH/18 Refactored debugging code in route_finduser() to show more information,
3311 in particular, the error code if getpwnam() issues one.
3313 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
3314 This is apparently needed in addition to the PH/07 change above to avoid
3315 any possible encoding problems.
3317 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
3318 but not after initializing Perl.
3320 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
3321 output them only if debugging. By default they are written stderr,
3322 apparently, which is not desirable.
3324 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
3325 queries.
3327 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
3328 --not options
3330 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
3332 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
3333 authenticated or an ident call has been made. Suppress the default
3334 values for $authenticated_id and $authenticated_sender (but permit -oMai
3335 and -oMas) when testing with -bh.
3337 PH/24 Re-jigged the order of the tests in the default configuration so that the
3338 tests for valid domains and recipients precede the DNS black list and CSA
3339 tests, on the grounds that those ones are more expensive.
3341 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
3342 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
3343 This bug exists in every version of Exim that I still have, right back to
3344 0.12.
3346 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
3347 However, an attempt to turn on case-sensitivity in a regex key by
3348 including (?-i) didn't work because the subject string was already
3349 lowercased, and the effects were non-intuitive. It turns out that a
3350 one-line patch can be used to allow (?-i) to work as expected.
3353 Exim version 4.62
3354 -----------------
3356 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
3357 other effects) broke the use of negated acl sub-conditions.
3359 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
3360 patch).
3362 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
3363 "Deny" causes Exim to reject the incoming connection with a 554 error.
3364 Unfortunately, if there is a major crisis, such as a disk failure,
3365 tcp-wrappers gives "deny", whereas what one would like would be some
3366 kind of temporary error. A kludge has been added to help with this.
3367 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
3368 554 error is used if errno is still zero or contains ENOENT (which occurs
3369 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
3370 451 error is used.
3372 PH/03 Add -lutil to the default FreeBSD LIBS setting.
3374 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
3375 errors. Otherwise a message that provokes a temporary error (when other
3376 messages do not) can cause a whole host to time out.
3378 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
3379 addresses were routed directly to files or pipes from a redirect router.
3380 File deliveries just didn't batch; pipe deliveries might have suffered
3381 odd errors.
3383 PH/06 A failure to get a lock for a hints database would erroneously always say
3384 "Failed to get write lock", even when it was really a read lock.
3386 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
3387 of 0600. This has been changed to use the value of the lockfile_mode
3388 option (which defaults to 0600).
3390 PH/08 Applied small patch from the Sieve maintainer.
3392 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
3393 folder from quota calculations, a direct delivery into this folder messed
3394 up the contents of the maildirsize file. This was because the regex was
3395 used only to exclude .Trash (or whatever) when the size of the mailbox
3396 was calculated. There was no check that a delivery was happening into an
3397 excluded directory. This bug has been fixed by ignoring all quota
3398 processing for deliveries into excluded directories.
3400 PH/10 Added the maildirfolder_create_regex option to appendfile.
3403 Exim version 4.61
3404 -----------------
3406 PH/01 The code for finding all the local interface addresses on a FreeBSD
3407 system running IPv6 was broken. This may well have applied to all BSD
3408 systems, as well as to others that have similar system calls. The broken
3409 code found IPv4 interfaces correctly, but gave incorrect values for the
3410 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
3411 that it would not match correctly against @[] and not recognize the IPv6
3412 addresses as local.
3414 PH/02 The ipliteral router was not recognizing addresses of the form user@
3415 [ipv6:....] because it didn't know about the "ipv6:" prefix.
3417 PH/03 Added disable_ipv6.
3419 PH/04 Changed $reply_address to use the raw form of the headers instead of the
3420 decoded form, because it is most often used to construct To: headers
3421 lines in autoreplies, and the decoded form may well be syntactically
3422 invalid. However, $reply_address has leading white space removed, and all
3423 newlines turned into spaces so that the autoreply transport does not
3424 grumble.
3426 PH/05 If group was specified without a user on a router, and no group or user
3427 was specified on a transport, the group from the router was ignored.
3429 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
3430 for visible compile-time settings that can be used to change these
3431 numbers, for those that want even more. Backwards compatibility with old
3432 spool files has been maintained. However, going back to a previous Exim
3433 release will lost any variables that are in spool files.
3435 PH/07 Two small changes when running in the test harness: increase delay when
3436 passing a TCP/IP connection to a new process, in case the original
3437 process has to generate a bounce, and remove special handling of
3438 (sic), which is no longer necessary.
3440 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
3441 be the same on different OS.
3443 PH/09 Moved a debug statement in filter processing to avoid a race problem when
3444 testing.
3446 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
3447 whether --show-vars was specified or not
3449 JJ/02 exipick: Added support for new ACL variable spool format introduced
3450 in 4.61-PH/06
3452 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
3453 syntactically invalid From: or Reply-to: line, and a filter used this to
3454 generate an autoreply, and therefore failed to obtain an address for the
3455 autoreply, Exim could try to deliver to a non-existent relative file
3456 name, causing unrelated and misleading errors. What now happens is that
3457 it logs this as a hard delivery error, but does not attempt to create a
3458 bounce message.
3460 PH/11 The exinext utility has a -C option for testing purposes, but although
3461 the given file was scanned by exinext itself; it wasn't being passed on
3462 when Exim was called.
3464 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
3465 an end-of-file indication when reading a command response.
3467 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
3468 compiled. In many other places in Exim, IPv6 addresses are always
3469 recognized, so I have changed this. It also means that IPv4 domain
3470 literals of the form [IPV4:n.n.n.n] are now always recognized.
3472 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
3473 used if the router is not running as root, for example, when verifying at
3474 ACL time, or when using -bh. The debugging output from this situation was
3475 non-existent - all you got was a failure to exec. I have made two
3476 changes:
3478 (a) Failures to set uid/gid, the current directory, or a process leader
3479 in a subprocess such as that created by queryprogram now generate
3480 suitable debugging output when -d is set.
3482 (b) The queryprogram router detects when it is not running as root,
3483 outputs suitable debugging information if -d is set, and then runs
3484 the subprocess without attempting to change uid/gid.
3486 PH/15 Minor change to Makefile for building test_host (undocumented testing
3487 feature).
3489 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
3490 additional section of a DNS packet that returns MX or SRV records.
3491 Instead, it always explicitly searches for A/AAAA records. This avoids
3492 major problems that occur when a DNS server includes only records of one
3493 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
3494 fixed another bug: if SRV records were looked up and the corresponding
3495 address records were *not* found in the additional section, the port
3496 values from the SRV records were lost.
3498 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
3499 using the correct key (the original address) when searching the retry
3500 rules in order to find which one to use for generating the retry hint.
3502 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
3503 adding the default one. Similarly, if it contains a Reply-To: header, the
3504 errors_reply_to option, if set, is not used.
3506 PH/19 When calculating a retry time, Exim used to measure the "time since
3507 failure" by looking at the "first failed" field in the retry record. Now
3508 it does not use this if it is later than than the arrival time of the
3509 message. Instead it uses the arrival time. This makes for better
3510 behaviour in cases where some deliveries succeed, thus re-setting the
3511 "first failed" field. An example is a quota failure for a huge message
3512 when small messages continue to be delivered. Without this change, the
3513 "time since failure" will always be short, possible causing more frequent
3514 delivery attempts for the huge message than are intended.
3515 [Note: This change was subsequently modified - see PH/04 for 4.62.]
3517 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
3518 $1, $2, $3) because the numerical variables can be reset during some
3519 expansion items (e.g. "match"), thereby losing the authentication data.
3521 PH/21 Make -bV show the size of off_t variables so that the test suite can
3522 decide whether to run tests for quotas > 2G.
3524 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
3525 mailbox_size, and mailbox_filecount in the appendfile transport. If a
3526 filecount value is greater than 2G or if a quota value is greater than 2G
3527 on a system where the size of off_t is not greater than 4, a panic error
3528 is given.
3530 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
3531 never match. The debug and -bh output now contains an explicit error
3532 message indicating a malformed IPv4 address or mask.
3534 PH/24 An host item such as was being treated as the IP address
3535 without a mask. Now it is not recognized as an IP address, and
3536 PH/23 above applies.
3538 PH/25 Do not write to syslog when running in the test harness. The only
3539 occasion when this arises is a failure to open the main or panic logs
3540 (for which there is an explicit test).
3542 PH/26 Added the /no_tell option to "control=freeze".
3544 PH/27 If a host name lookup failed very early in a connection, for example, if
3545 the IP address matched host_lookup and the reverse lookup yielded a name
3546 that did not have a forward lookup, an error message of the form "no IP
3547 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
3548 could be logged. Now it outputs the IP address instead of "NULL".
3550 PH/28 An enabling patch from MH: add new function child_open_exim2() which
3551 allows the sender and the authenticated sender to be set when
3552 submitting a message from within Exim. Since child_open_exim() is
3553 documented for local_scan(), the new function should be too.
3555 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
3556 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
3557 results in an empty string is now treated as unset.
3559 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
3561 PH/31 Added sender_verify_fail logging option.
3563 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
3564 needed by RFC 822 but not by RFC 2822 was commented out. I have now
3565 tidied the source and removed it altogether.
3567 PH/33 When a queue run was abandoned because the load average was too high, a
3568 log line was always written; now it is written only if the queue_run log
3569 selector is set. In addition, the log line for abandonment now contains
3570 information about the queue run such as the pid. This is always present
3571 in "start" and "stop" lines but was omitted from the "abandon" line.
3573 PH/34 Omit spaces between a header name and the colon in the error message that
3574 is given when verify = headers_syntax fails (if there are lots of them,
3575 the message gets confusing).
3577 PH/35 Change the default for dns_check_names_pattern to allow slashes within
3578 names, as there are now some PTR records that contain slashes. This check
3579 is only to protect against broken name servers that fall over on strange
3580 characters, so the fact that it applies to all lookups doesn't matter.
3582 PH/36 Now that the new test suite is complete, we can remove some of the
3583 special code in Exim that was needed for the old test suite. For example,
3584 sorting DNS records because real resolvers return them in an arbitrary
3585 order. The new test suite's fake resolver always returns records in the
3586 same order.
3588 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
3589 bounces) except when queue_only is set, to avoid logging races between
3590 the different processes.
3592 PH/38 Panic-die if .include specifies a non-absolute path.
3594 PH/39 A tweak to the "H" retry rule from its user.
3596 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
3597 a label. They prevented compilation on older perls.
3599 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
3600 a warning to be raised on newish perls.
3602 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
3603 on queue. Changes to match documented behaviour of showing count of
3604 messages matching specified criteria.
3606 PH/40 Changed the default ident timeout from 30s to 5s.
3608 PH/41 Added support for the use of login_cap features, on those BSD systems
3609 that have them, for controlling the resources used by pipe deliveries.
3611 PH/42 The content-scanning code uses fopen() to create files in which to put
3612 message data. Previously it was not paying any attention to the mode of
3613 the files. Exim runs with umask(0) because the rest of the code creates
3614 files with open(), and sets the required mode explicitly. Thus, these
3615 files were ending up world-writeable. This was not a big issue, because,
3616 being within the spool directory, they were not world-accessible. I have
3617 created a function called modefopen, which takes an additional mode
3618 argument. It sets umask(777), creates the file, chmods it to the required
3619 mode, then resets the umask. All the relevant calls to fopen() in the
3620 content scanning code have been changed to use this function.
3622 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
3623 to 24 hours. This avoids potential overflow problems when processing G
3624 and H retry rules. I suspect nobody ever tinkers with this value.
3626 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
3628 PH/45 When the plaintext authenticator is running as a client, the server's
3629 challenges are checked to ensure they are valid base64 strings. By
3630 default, the authentication attempt is cancelled if an invalid string is
3631 received. Setting client_ignore_invalid_base64 true ignores these errors.
3632 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
3633 they are received. Thus, the responses can be made to depend on the
3634 challenges. If an invalid string is ignored, an empty string is placed in
3635 the variable.
3637 PH/46 Messages that are created by the autoreply transport now contains a
3638 References: header, in accordance with RFCs 2822 and 3834.
3640 PH/47 Added authenticated_sender_force to the smtp transport.
3642 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
3644 PH/49 Installed latest patch from the Sieve maintainer.
3646 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
3647 was also set, the appendfile transport was unnecessarily scanning a
3648 directory of message files (e.g. for maildir delivery) to find the count
3649 of files (along with the size), even though it did not need this
3650 information. It now does the scan only if it needs to find either the
3651 size of the count of files.
3653 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
3655 PH/52 Two bugs concerned with error handling when the smtp transport is
3656 used in LMTP mode:
3658 (i) Exim was not creating retry information for temporary errors given
3659 for individual recipients after the DATA command when the smtp transport
3660 was used in LMTP mode. This meant that they could be retried too
3661 frequently, and not timed out correctly.
3663 (ii) Exim was setting the flag that allows error details to be returned
3664 for LMTP errors on RCPT commands, but not for LMTP errors for individual
3665 recipients that were returned after the DATA command.
3667 PH/53 This is related to PH/52, but is more general: for any failing address,
3668 when detailed error information was permitted to be returned to the
3669 sender, but the error was temporary, then after the final timeout, only
3670 "retry timeout exceeded" was returned. Now it returns the full error as
3671 well as "retry timeout exceeded".
3673 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
3674 do this, and (what is worse) MTAs that accept it.
3676 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
3677 will now be deprecated.
3679 PH/56 New os.c-cygwin from the Cygwin maintainer.
3681 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
3682 formats (previously only available in exim formats via -bpr, -bpru,
3683 and -bpra. Now also available in native and exiqgrep formats)
3685 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
3686 with very large, slow to parse queues
3688 JJ/08 exipick: added ! as generic prefix to negate any criteria format
3690 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
3692 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
3693 responses to authentication challenges, though it was showing the
3694 challenges; (ii) I've removed the CR characters from the debug output for
3695 SMTP output lines.
3697 PH/58 Allow for the insertion of a newline as well as a space when a string
3698 is turned into more than one encoded-word during RFC 2047 encoding. The
3699 Sieve code now uses this.
3701 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
3702 data_4xx, lost_connection, tls_required.
3704 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
3705 message was being sent as an SMTP response.
3707 PH/61 Add -l and -k options to exicyclog.
3709 PH/62 When verifying, if an address was redirected to one new address, so that
3710 verification continued, and the new address failed or deferred after
3711 having set something in $address_data, the value of $address_data was not
3712 passed back to the ACL. This was different to the case when no
3713 redirection occurred. The value is now passed back in both cases.
3715 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
3716 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
3717 use login_cap.h, so on its own it isn't the distinguishing feature. The
3718 new name refers directly to the setclassresources() function.
3720 PH/65 Added configuration files for NetBSD3.
3722 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
3724 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
3725 is preferred over IPv4.
3727 PH/68 The bounce_return_message and bounce_return_body options were not being
3728 honoured for bounces generated during the reception of non-SMTP messages.
3729 In particular, this applied to messages rejected by the ACL. This bug has
3730 been fixed. However, if bounce_return_message is true and bounce_return_
3731 body is false, the headers that are returned for a non-SMTP message
3732 include only those that have been read before the error was detected.
3733 (In the case of an ACL rejection, they have all been read.)
3735 PH/69 The HTML version of the specification is now built in a directory called
3736 spec_html instead of spec.html, because the latter looks like a path with
3737 a MIME-type, and this confuses some software.
3739 PH/70 Catch two compiler warnings in sieve.c.
3741 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
3742 function verify_get_ident() calls ip_connect() to connect a socket, but
3743 if the "connect()" function timed out, ip_connect() used to close the
3744 socket. However, verify_get_ident() also closes the socket later, and in
3745 between Exim writes to the log, which may get opened at this point. When
3746 the socket was closed in ip_connect(), the log could get the same file
3747 descriptor number as the socket. This naturally causes chaos. The fix is
3748 not to close the socket in ip_connect(); the socket should be closed by
3749 the function that creates it. There was only one place in the code where
3750 this was missing, in the iplookup router, which I don't think anybody now
3751 uses, but I've fixed it anyway.
3753 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
3754 well as to direct DNS lookups. Otherwise the handling of names in host
3755 lists is inconsistent and therefore confusing.
3758 Exim version 4.60
3759 -----------------
3761 PH/01 Two changes to the default runtime configuration:
3763 (1) Move the checks for relay_from_hosts and authenticated clients from
3764 after to before the (commented out) DNS black list checks.
3766 (2) Add control=submission to the relay_from_hosts and authenticated
3767 clients checks, on the grounds that messages accepted by these
3768 statements are most likely to be submissions.
3770 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
3772 (1) Generate an error if the third argument for the ${prvs expansion is
3773 not a single digit.
3775 (2) Treat a missing third argument of ${prvscheck as if it were an empty
3776 string.
3778 (3) Reset the variables that are obtained from the first argument of
3779 ${prvscheck and used in the second argument before leaving the code,
3780 because their memory is reclaimed, so using them afterwards may do
3781 silly things.
3783 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
3784 one (it's much easier than Tom thought :-).
3786 (5) Because of (4), we can now allow for the use of $prvscheck_result
3787 inside the third argument.
3789 PH/03 For some reason, the default setting of PATH when running a command from
3790 a pipe transport was just "/usr/bin". I have changed it to
3791 "/bin:/usr/bin".
3794 anything to be listed in the output from -bV.
3796 PH/05 When a filter generated an autoreply, the entire To: header line was
3797 quoted in the delivery log line, like this:
3799 => >A.N.Other <ano@some.domain> <original@ddress> ...
3801 This has been changed so that it extracts the operative address. There
3802 may be more than one such address. If so, they are comma-separated, like
3803 this:
3805 => >ano@some.domain,ona@other.domain <original@ddress> ...
3807 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
3808 command, (for example, EHLO []) and the client's IP address was
3809 not being looked up in the rDNS to get a host name, Exim was showing the
3810 IP address twice in Received: lines, even though the IP addresses were
3811 identical. For example:
3813 Received: from [] (helo=[])
3815 However, if the real host name was known, it was omitting the HELO data
3816 if it matched the actual IP address. This has been tidied up so that it
3817 doesn't show the same IP address twice.
3819 PH/07 When both +timestamp and +memory debugging was on, the value given by
3820 $tod_xxx expansions could be wrong, because the tod_stamp() function was
3821 called by the debug printing, thereby overwriting the timestamp buffer.
3822 Debugging no longer uses the tod_stamp() function when +timestamp is set.
3824 PH/08 When the original message was included in an autoreply transport, it
3825 always said "this is a copy of the message, including all the headers",
3826 even if body_only or headers_only was set. It now gives an appropriate
3827 message.
3829 PH/09 Applied a patch from the Sieve maintainer which:
3831 o fixes some comments
3832 o adds the (disabled) notify extension core
3833 o adds some debug output for the result of if/elsif tests
3834 o points to the current vacation draft in the documentation
3835 and documents the missing references header update
3837 and most important:
3839 o fixes a bug in processing the envelope test (when testing
3840 multiple envelope elements, the last element determined the
3841 result)
3843 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
3844 Electronic Mail") by including:
3846 Auto-submitted: auto-generated
3848 in the messages that it generates (bounce messages and others, such as
3849 warnings). In the case of bounce messages for non-SMTP messages, there was
3850 also a typo: it was using "Auto_submitted" (underscore instead of
3851 hyphen). Since every message generated by Exim is necessarily in response
3852 to another message, thes have all been changed to:
3854 Auto-Submitted: auto-replied
3856 in accordance with these statements in the RFC:
3858 The auto-replied keyword:
3860 - SHOULD be used on messages sent in direct response to another
3861 message by an automatic process,
3863 - MUST NOT be used on manually-generated messages,
3865 - MAY be used on Delivery Status Notifications (DSNs) and Message
3866 Disposition Notifications (MDNs),
3868 - MUST NOT be used on messages generated by automatic or periodic
3869 processes, except for messages which are automatic responses to
3870 other messages.
3872 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
3873 to the default Received: header definition.
3875 PH/12 Added log selector acl_warn_skipped (default on).
3877 PH/13 After a successful wildlsearch lookup, discard the values of numeric
3878 variables because (a) they are in the wrong storage pool and (b) even if
3879 they were copied, it wouldn't work properly because of the caching.
3881 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
3882 checking when decoding. Apparently there are clients that generate
3883 overlong encoded strings. Why am I not surprised?
3885 PH/15 If the first argument of "${if match_address" was not empty, but did not
3886 contain an "@" character, Exim crashed. Now it writes a panic log message
3887 and treats the condition as false.
3889 PH/16 In autoreply, treat an empty string for "once" the same as unset.
3891 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
3892 extension "envelope-auth". The code is finished and in agreement with
3893 other implementations, but there is no documentation so far and in fact,
3894 nobody wrote the draft yet. This extension is currently #undef'ed, thus
3895 not changing the active code.
3897 Print executed "if" and "elsif" statements when debugging is used. This
3898 helps a great deal to understand what a filter does.
3900 Document more things not specified clearly in RFC3028. I had all this
3901 sorted out, when out of a sudden new issues came to my mind. Oops."
3903 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
3904 (Bugzilla #53).
3906 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
3907 canonical form (as documented). However, after a host name lookup from
3908 the IP address, check_host() was doing a simple string comparison with
3909 addresses acquired from the DNS when checking that the found name did
3910 have the original IP as one of its addresses. Since any found IPv6
3911 addresses are likely to be in abbreviated form, the comparison could
3912 fail. Luckily, there already exists a function for doing the comparison
3913 by converting both addresses to binary, so now that is used instead of
3914 the text comparison.
3916 PH/20 There was another similar case to PH/19, when a complete host name was
3917 given in a host list; looking up its IP address could give an abbreviated
3918 form, whereas the current host's name might or might not be abbreviated.
3919 The same fix has been applied.
3922 Exim version 4.54
3923 -----------------
3925 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
3926 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
3927 It now does.
3929 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
3930 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
3932 PH/03 Typo: missing ".o" in src/pcre/Makefile.
3934 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
3935 header line, restrict the check to what is listed in RFCs 2369 and 2929.
3936 Also, for "Auto-Submitted", treat anything other than "no" as
3937 non-personal, in accordance with RFC 3834. (Previously it treated
3938 anything starting "auto-" as non-personal.)
3940 TF/01 The control=submission/name=... option had a problem with syntax
3941 errors if the name included a slash character. The /name= option
3942 now slurps the rest of the string, so it can include any characters
3943 but it must come last in the list of options (after /sender_retain
3944 or /domain=).
3946 PH/05 Some modifications to the interface to the fake nameserver for the new
3947 testing suite.
3951 Exim version 4.53
3952 -----------------
3954 TK/01 Added the "success_on_redirect" address verification option. See
3955 NewStuff for rationale and an example.
3957 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
3959 PH/02 Patch to exigrep to allow it to work on syslog lines.
3961 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
3962 fread() to skip over the body file's header line, because in Cygwin the
3963 header line is locked and is inaccessible.
3965 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
3966 co-exist for some time) to make it clear that it is the Exim ID that is
3967 referenced, not the Message-ID: header line.
3969 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
3970 string_format() function, because snprintf() does not exist on all
3971 operating systems.
3973 PH/06 The use of forbid_filter_existstest now also locks out the use of the
3974 ${stat: expansion item.
3976 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
3977 protocol synchronization error", to keep the pedants happy.
3979 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
3980 well as for IRIX systems, when gcc is being used. See the host.c source
3981 file for comments.
3983 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
3985 PH/10 Named domain lists were not working if used in a queue_smtp_domains
3986 setting.
3988 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
3989 transport and to the smtp transport in LMTP mode.
3991 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
3993 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
3994 run a filter in a subprocess. This could lead to confusion in subsequent
3995 lookups in the parent process. There should also be a search_tidyup() at
3996 the end of the subprocess.
3998 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
3999 only if the host matched helo_try_verify_hosts, which caused the
4000 verification to occur when the EHLO/HELO command was issued. The ACL just
4001 tested the remembered result. Now, if a previous verification attempt has
4002 not happened, "verify = helo" does it there and then.
4004 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
4006 TK/03 Fix log output including CR from clamd.
4008 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
4009 exist provoked a memory error which could cause a segfault.
4011 PH/15 Installed PCRE 6.2
4013 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
4015 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
4016 of the problem. Specifically, suggested +O2 rather than +O1 for the
4017 HP-UX compiler.
4019 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
4021 PH/20 If a delivery was routed to a non-standard port by means of an SRV
4022 record, the port was not correctly logged when the outgoing_port log
4023 selector was set (it logged the transort's default port).
4025 PH/21 Added support for host-specific ports to manualroute, queryprogram,
4026 fallback_hosts, and "hosts" in the smtp transport.
4028 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
4029 host errors such as "Connection refused".
4031 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
4032 authentication with radiusclient 0.4.9:
4034 - Error returned from rc_read_config was caught wrongly
4035 - Username/password not passed on to radius server due to wrong length.
4037 The presumption is that some radiusclient API changes for 4.51/PH/17
4038 were not taken care of correctly. The code is still untested by me (my
4039 Linux distribution still has 0.3.2 of radiusclient), but it was
4040 contributed by a Radius user.
4042 PH/24 When doing a callout, the value of $domain wasn't set correctly when
4043 expanding the "port" option of the smtp transport.
4045 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
4046 while reading a MIME header. Thanks to Tom Hughes for a patch.
4048 PH/24 Include config.h inside local_scan.h so that configuration settings are
4049 available.
4051 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
4052 that in an ACL for RCPT (for example), you can examine exactly what was
4053 received.
4055 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
4056 commands, but it was not correctly comparing the address with the actual
4057 client host address. Thus, it would show the EHLO address in Received:
4058 header lines when this was not necessary.
4060 PH/27 Added the % operator to ${eval:}.
4062 PH/28 Exim tries to create and chdir to its spool directory when it starts;
4063 it should be ignoring failures (because with -C, for example, it has lost
4064 privilege). It wasn't ignoring creation failures other than "already
4065 exists".
4067 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
4068 -bV or -d is used.
4070 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
4071 because an input line was too long, either on its own, or by virtue of
4072 too many continuations, the temporary file was not being removed, and the
4073 return code was incorrect.
4075 PH/31 Missing "BOOL" in function definition in filtertest.c.
4077 PH/32 Applied Sieve patches from the maintainer.
4079 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
4081 PH/33 Added "verify = not_blind".
4083 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
4084 Local/Makefile (with some defaults set). These are used in built scripts
4085 such as exicyclog, but they have never been used in the exim_install
4086 script (though there are many overriding facilities there). I have
4087 arranged that the exim_install script now takes note of these two
4088 settings.
4090 PH/35 Installed configuration files for Dragonfly.
4092 PH/36 When a locally submitted message by a trusted user did not contain a
4093 From: header, and the sender address was obtained from -f or from an SMTP
4094 MAIL command, and the trusted user did not use -F to supply a sender
4095 name, $originator_name was incorrectly used when constructing a From:
4096 header. Furthermore, $originator_name was used for submission mode
4097 messages from external hosts without From: headers in a similar way,
4098 which is clearly wrong.
4100 PH/37 Added control=suppress_local_fixups.
4102 PH/38 When log_selector = +received_sender was set, and the addition of the
4103 sender made the log line's construction buffer exactly full, or one byte
4104 less than full, an overflow happened when the terminating "\n" was
4105 subsequently added.
4107 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
4108 when the result of a list match is failure because a DNS lookup failed.
4110 PH/40 RM_COMMAND is now used in the building process.
4112 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
4113 the "build-* directories that it finds.
4115 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
4116 address in a domain literal was a prefix of an interface address.
4118 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
4119 when verifying a sender address, unless rewrite_headers is false.
4121 PH/44 Wrote a long comment about why errors_to addresses are verified as
4122 recipients, not senders.
4124 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
4125 the ratelimit ACL was added.
4127 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
4129 PH/46 Added extra information about PostgreSQL errors to the error string.
4131 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
4132 avoiding the need to install special zones in a real server. This is
4133 backwards compatible; if it can't find the fake resolver, it drops back.
4134 Thus, both old and new test suites can be run.
4136 TF/02 Added util/ratelimit.pl
4138 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
4139 clock is set back in time.
4141 TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
4142 Candler <B.Candler@pobox.com>.
4144 TF/05 The fix for PH/43 was not completely correct; widen_domains is always
4145 OK for addresses that are the result of redirections.
4147 PH/48 A number of further additions for the benefit of the new test suite,
4148 including a fake gethostbyname() that interfaces to the fake DNS resolver
4149 (see PH/47 above).
4151 TF/06 The fix for widen_domains has also been applied to qualify_single and
4152 search_parents which are the other dnslookup options that can cause
4153 header rewrites.
4155 PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
4156 type ("H").
4158 PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
4160 TF/07 Exim produced the error message "an SRV record indicated no SMTP
4161 service" if it encountered an MX record with an empty target hostname.
4162 The message is now "an MX or SRV record indicated no SMTP service".
4164 TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
4165 if the DNS of the sending site is misconfigured. This is quite a
4166 common situation. This change restores the behaviour of treating a
4167 helo verification defer as a failure.
4169 PH/51 If self=fail was set on a router, the bounce message did not include the
4170 actual error message.
4173 Exim version 4.52
4174 -----------------
4176 TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
4178 PH/01 When a transport filter timed out in a pipe delivery, and the pipe
4179 command itself ended in error, the underlying message about the transport
4180 filter timeout was being overwritten with the pipe command error. Now the
4181 underlying error message should be appended to the second error message.
4183 TK/01 Fix poll() being unavailable on Mac OSX 10.2.
4185 PH/02 Reduce the amount of output that "make" produces by default. Full output
4186 can still be requested.
4188 PH/03 The warning log line about a condition test deferring for a "warn" verb
4189 was being output only once per connection, rather than after each
4190 occurrence (because it was using the same function as for successful
4191 "warn" verbs). This seems wrong, so I have changed it.
4193 TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
4194 it should not have, which might have caused a crash in the right
4195 circumstances, but probably never did.
4197 PH/04 Installed a modified version of Tony Finch's patch to make submission
4198 mode fix the return path as well as the Sender: header line, and to
4199 add a /name= option so that you can make the user's friendly name appear
4200 in the header line.
4202 TF/03 Added the control = fakedefer ACL modifier.
4204 TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
4205 Mark Lowes for thorough testing.
4207 TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
4209 TK/03 Merged latest SRS patch from Miles Wilton.
4211 PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
4212 with the definition in sysexits.h (which is #included earlier).
4213 Fortunately, Exim does not actually use EX_OK. The code used to try to
4214 preserve the sysexits.h value, by assuming that macro definitions were
4215 scanned for macro replacements. I have been disabused of this notion,
4216 so now the code just undefines EX_OK before #including unistd.h.
4218 PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
4219 in the smtp transport. When a block could not be written in a single
4220 write() function, the timeout was being re-applied to each part-write.
4221 This seems wrong - if the receiver was accepting one byte at a time it
4222 would take for ever. The timeout is now adjusted when this happens. It
4223 doesn't have to be particularly precise.
4225 TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
4226 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
4228 PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
4229 without a domain if the check to <postmaster@domain> fails.
4231 SC/01 Eximstats: added -xls and the ability to specify output files
4232 (patch written by Frank Heydlauf).
4234 SC/02 Eximstats: use FileHandles for outputting results.
4236 SC/03 Eximstats: allow any combination of xls, txt, and html output.
4238 SC/04 Eximstats: fixed display of large numbers with -nvr option
4240 SC/05 Eximstats: fixed merging of reports with empty tables.
4242 SC/06 Eximstats: added the -include_original_destination flag
4244 SC/07 Eximstats: removed tabs and trailing whitespace.
4246 TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
4248 TK/06 MBOX spool code: Add real "From " MBOX separator line
4249 so the .eml file is really in mbox format (even though
4250 most programs do not really care). Patch from Alex Miller.
4252 TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
4253 The latter is generated from $received_to and is only set if the
4254 message has one envelope recipient. SA can use these headers,
4255 obviously out-of-the-box. Patch from Alex Miller.
4257 PH/08 The ${def test on a variable was returning false if the variable's
4258 value was "0", contrary to what the specification has always said!
4259 The result should be true unless the variable is empty.
4261 PH/09 The syntax error of a character other than { following "${if
4262 def:variable_name" (after optional whitespace) was not being diagnosed.
4263 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
4264 accidental colon was present, for example, could give incorrect results.
4266 PH/10 Tidied the code in a number of places where the st_size field of a stat()
4267 result is used (not including appendfile, where other changes are about
4268 to be made).
4270 PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
4271 This involved changing a lot of size variables from int to off_t. It
4272 should work with maildirs and everything.
4274 TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
4275 spamd dying while we are connected to it.
4277 TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
4278 <jgh@wizmail.org>
4280 PH/12 Applied Alex Kiernan's patch for the API change for the error callback
4281 function for BDB 4.3.
4283 PH/13 Changed auto_thaw such that it does not apply to bounce messages.
4285 PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
4286 the sources for PCRE have been re-arranged and more files are now
4287 involved.
4289 PH/15 The code I had for printing potentially long long variables in PH/11
4290 above was not the best (it lost precision). The length of off_t variables
4291 is now inspected at build time, and an appropriate printing format (%ld
4292 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
4293 to be "long long int" or "long int". This is needed for the internal
4294 formatting function string_vformat().
4296 PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
4297 the configuration file to be ":syslog", then the script "guesses" where
4298 the logs files are, rather than using the compiled in default. In our
4299 case the guess is not the same as the compiled default, so the script
4300 suddenly stopped working when I started to use syslog. The patch checks
4301 to see if log_file_path is "". If so, it attempts to read it from exim
4302 with no configuration file to get the compiled in version, before it
4303 falls back to the previous guessing code."
4305 TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
4306 implementing BATV in an Exim configuration. See NewStuff for the gory
4307 details.
4309 PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
4310 Makefile that are specific to HP-UX.
4312 PH/18 If the "use_postmaster" option was set for a recipient callout together
4313 with the "random" option, the postmaster address was used as the MAIL
4314 FROM address for the random test, but not for the subsequent recipient
4315 test. It is now used for both.
4317 PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
4318 patch removes a few documentation additions to RFC 3028, because the
4319 latest draft now contains them. It adds the new en;ascii-case comparator
4320 and a new error check for 8bit text in MIME parts. Comparator and
4321 require names are now matched exactly. I enabled the subaddress
4322 extension, but it is not well tested yet (read: it works for me)."
4324 PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
4325 rework some of the code of TK/09 above to avoid the hardwired use of
4326 "%lld" and "long long". Replaced the call to snprintf() with a call to
4327 string_vformat().
4329 PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
4330 records point to non-existent hosts", "retry timeout exceeded", and
4331 "retry time not reached for any host after a long failure period".
4333 PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
4334 experimental DomainKeys support:
4336 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
4337 (2) On an error such as an illegally used "control", the wrong name for
4338 the control was given.
4340 These problems did NOT occur unless DomainKeys support was compiled.
4342 PH/23 Added daemon_startup_retries and daemon_startup_sleep.
4344 PH/24 Added ${if match_ip condition.
4346 PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
4347 databases so that it will be absolutely obvious if a crash occurs in the
4348 DB library. This is a regular occurrence (often caused by mis-matched
4349 db.h files).
4351 PH/26 Insert a lot of missing (void) casts for functions such as chown(),
4352 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
4353 picked up on a user's system that detects such things. There doesn't seem
4354 to be a gcc warning option for this - only an attribute that has to be
4355 put on the function's prototype. It seems that in Fedora Core 4 they have
4356 set this on a number of new functions. No doubt there will be more in due
4357 course.
4359 PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
4360 specify a transport. However, if an address that was verified by such a
4361 router was the subject of a callout, Exim crashed because it tried to
4362 read the rcpt_include_affixes from the non-existent transport. Now it
4363 just assumes that the setting of that option is false. This bug was
4364 introduced by 4.51/PH/31.
4366 PH/28 Changed -d+all to exclude +memory, because that information is very
4367 rarely of interest, but it makes the output a lot bigger. People tend to
4368 do -d+all out of habit.
4370 PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
4371 code in os-type was giving problems when libc.so lives in lib64, like on
4372 x86_64 Fedora Core.
4374 PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
4375 aren't the modern standard, and it seems that some systems' include files
4376 don't always have them. Exim was already checking for some of the newer
4377 ones like T_AAAA, and defining it itself. I've added checks for all the
4378 record types that Exim uses.
4380 PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
4381 not automatically generating a new one, as it is supposed to. This
4382 prevented TLS from working. If the file did exist, but contained invalid
4383 data, a new version was generated, as expected. It was only the case of a
4384 non-existent file that was broken.
4386 TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
4387 with a change in libdomainkeys > 0.64.
4389 TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
4390 from DNS. If the selector record carries the flag, it now has
4391 precedence over the domain-wide flag.
4393 TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
4395 PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
4396 the use of a port name that isn't defined in /etc/services) occurred, the
4397 message was deferred as in a normal delivery, and thus remained on the
4398 spool, instead of being failed because of the mua_wrapper setting. This
4399 is now fixed, and I tidied up some of the mua_wrapper messages at the
4400 same time.
4402 SC/08 Eximstats: whilst parsing the mainlog(s), store information about
4403 the messages in a hash of arrays rather than using individual hashes.
4404 This is a bit cleaner and results in dramatic memory savings, albeit
4405 at a slight CPU cost.
4407 SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
4408 as requested by Marc Sherman.
4410 SC/10 Eximstats: added histograms for user specified patterns as requested
4411 by Marc Sherman.
4413 SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
4415 PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
4416 fopen() in the content-scanning modules that did not already have it.
4419 Exim version 4.51
4420 -----------------
4422 TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
4423 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
4425 TK/02 Fix ACL "control" statement not being available in MIME ACL.
4427 TK/03 Fix ACL "regex" condition not being available in MIME ACL.
4429 PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
4430 to test Sieve filters that use "vacation".
4432 PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
4433 that changes the way the GnuTLS parameters are stored in the cache file.
4434 The new format can be generated externally. For backward compatibility,
4435 if the data in the cache doesn't make sense, Exim assumes it has read an
4436 old-format file, and it generates new data and writes a new file. This
4437 means that you can't go back to an older release without removing the
4438 file.
4440 PH/03 A redirect router that has both "unseen" and "one_time" set does not
4441 work if there are any delivery delays because "one_time" forces the
4442 parent to be marked "delivered", so its unseen clone is never tried
4443 again. For this reason, Exim now forbids the simultaneous setting of
4444 these two options.
4446 PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
4447 redirected to themselves ("homonym" addresses). Read the long ChangeLog
4448 entry if you want to know the details. The fix, however, neglected to
4449 consider the case when local delivery batching is involved. The test for
4450 "previously delivered" was not happening when checking to see if an
4451 address could be batched with a previous (undelivered) one; under
4452 certain circumstances this could lead to multiple deliveries to the same
4453 address.
4455 PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
4456 in its include files, and this causes problems building Exim.
4458 PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
4459 header_syntax) but Exim was just ignoring anything given after a slash.
4460 In particular, this caused confusion with an attempt to use "verify =
4461 reverse_host_lookup/defer_ok". An error is now given when options are
4462 supplied for verify items that do not have them. (Maybe reverse_host_
4463 lookup should have a defer_ok option, but that's a different point.)
4465 PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
4466 defined by RFC 821) to 2048, because there were problems with some AUTH
4467 commands, and RFC 1869 says the size should be increased for extended
4468 SMTP commands that take arguments.
4470 PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
4471 Finch).
4473 PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
4474 "unknown" error; now it says that the functionality isn't in the binary.
4476 PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
4477 an address' error message when a string expansion fails (syntax or
4478 whatever). Otherwise the password may appear in the log. Following change
4479 PH/42 below, there is no longer a chance of it appearing in a bounce
4480 message.
4482 PH/11 Installed exipick version 20050225.0 from John Jetmore.
4484 PH/12 If the last host in a fallback_hosts list was multihomed, only the first
4485 of its addresses was ever tried. (Bugzilla bug #2.)
4487 PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
4488 the result incorrectly in the debug output. (It correctly added a newline
4489 to what was transported.)
4491 TF/01 Added $received_time.
4493 PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
4494 commented out examples of how to interface to a virus scanner and to
4495 SpamAssassin. Also added commented examples of av_scanner and
4496 spamd_address settings.
4498 PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
4499 and controls are allowed in which ACLs. There were a couple of minor
4500 errors. Some of the entries in the conditions table (which is a table of
4501 where they are NOT allowed) were getting very unwieldy; rewrote them as a
4502 negation of where the condition IS allowed.
4504 PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
4506 PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
4507 header file does not have a version number, so I've had to invent a new
4508 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
4509 API. The code is untested by me (my Linux distribution still has 0.3.2 of
4510 radiusclient), but it was contributed by a Radius user.
4512 PH/18 Installed Lars Mainka's patch for the support of CRL collections in
4513 files or directories, for OpenSSL.
4515 PH/19 When an Exim process that is running as root has to create an Exim log
4516 file, it does so in a subprocess that runs as exim:exim so as to get the
4517 ownership right at creation (otherwise, other Exim processes might see
4518 the file with the wrong ownership). There was no test for failure of this
4519 fork() call, which would lead to the process getting stuck as it waited
4520 for a non-existent subprocess. Forks do occasionally fail when resources
4521 run out. I reviewed all the other calls to fork(); they all seem to check
4522 for failure.
4524 PH/20 When checking for unexpected SMTP input at connect time (before writing
4525 the banner), Exim was not dealing correctly with a non-positive return
4526 from the read() function. If the client had disconnected by this time,
4527 the result was a log entry for a synchronization error with an empty
4528 string after "input=" when read() returned zero. If read() returned -1
4529 (an event I could not check), uninitialized data bytes were printed.
4530 There were reports of junk text (parts of files, etc) appearing after
4531 "input=".
4533 PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
4535 PH/22 Added support for macro redefinition, and (re)definition in between
4536 driver and ACL definitions.
4538 PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
4539 forgetting to use the resulting value; it was using the unexpanded value.
4541 PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
4542 hadn't been configured. The fix is from Juergen Kreileder, who
4543 understands it better than I do:
4545 "Here's what I see happening with three configured cyrus_sasl
4546 authenticators configured (plain, login, cram-md5):
4548 On startup auth_cyrus_sasl_init() gets called for each of these.
4549 This means three calls to sasl_listmech() without a specified mech_list.
4550 => SASL tests which mechs of all available mechs actually work
4551 => three warnings about OTP not working
4552 => the returned list contains: plain, login, cram-md5, digest-md5, ...
4554 With the patch, sasl_listmech() also gets called three times. But now
4555 SASL's mech_list option is set to the server_mech specified in the the
4556 authenticator. Or in other words, the answer from sasl_listmech()
4557 gets limited to just the mech you're testing for (which is different
4558 for each call.)
4559 => the return list contains just 'plain' or 'login', 'cram-md5' or
4560 nothing depending on the value of ob->server_mech.
4562 I've just tested the patch: Authentication still works fine,
4563 unavailable mechs specified in the exim configuration are still
4564 caught, and the auth.log warnings about OTP are gone."
4566 PH/25 When debugging is enabled, the contents of the command line are added
4567 to the debugging output, even when log_selector=+arguments is not
4568 specified.
4570 PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
4571 answer is "GNU", and only if the return is "GNU/something" is the answer
4572 "Linux".
4574 PH/27 $acl_verify_message is now set immediately after the failure of a
4575 verification in an ACL, and so is available in subsequent modifiers. In
4576 particular, the message can be preserved by coding like this:
4578 warn !verify = sender
4579 set acl_m0 = $acl_verify_message
4581 Previously, $acl_verify_message was set only while expanding "message"
4582 and "log_message" when a very denied access.
4584 PH/28 Modified OS/os.c-Linux with
4586 -#ifndef OS_LOAD_AVERAGE
4587 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
4589 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
4590 nomenclature these days.)
4592 PH/29 Installed patch from the Sieve maintainer that adds the options
4593 sieve_useraddress and sieve_subaddress to the redirect router.
4595 PH/30 In these circumstances:
4596 . Two addresses routed to the same list of hosts;
4597 . First host does not offer TLS;
4598 . First host accepts first address;
4599 . First host gives temporary error to second address;
4600 . Second host offers TLS and a TLS session is established;
4601 . Second host accepts second address.
4602 Exim incorrectly logged both deliveries with the TLS parameters (cipher
4603 and peerdn, if requested) that were in fact used only for the second
4604 address.
4606 PH/31 When doing a callout as part of verifying an address, Exim was not paying
4607 attention to any local part prefix or suffix that was matched by the
4608 router that accepted the address. It now behaves in the same way as it
4609 does for delivery: the affixes are removed from the local part unless
4610 rcpt_include_affixes is set on the transport.
4612 PH/32 Add the sender address, as F=<...>, to the log line when logging a
4613 timeout during the DATA phase of an incoming message.
4615 PH/33 Sieve envelope tests were broken for match types other than :is. I have
4616 applied a patch sanctioned by the Sieve maintainer.
4618 PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
4619 the uid or gid is negative. A case of a negative gid caused this to be
4620 noticed. The fix allows for either to be negative.
4622 PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
4623 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
4624 overlooked.
4626 PH/36 The change PH/12 above was broken. Fixed it.
4628 PH/37 Exim used to check for duplicate addresses in the middle of routing, on
4629 the grounds that routing the same address twice would always produce the
4630 same answer. This might have been true once, but it is certainly no
4631 longer true now. Routing a child address may depend on the previous
4632 routing that produced that child. Some complicated redirection strategies
4633 went wrong when messages had multiple recipients, and made Exim's
4634 behaviour dependent on the order in which the addresses were given.
4636 I have moved the duplicate checking until after the routing is complete.
4637 Exim scans the addresses that are assigned to local and remote
4638 transports, and removes any duplicates. This means that more work will be
4639 done, as duplicates will always all be routed, but duplicates are
4640 presumably rare, so I don't expect this is of any significance.
4642 For deliveries to pipes, files, and autoreplies, the duplicate checking
4643 still happens during the routing process, since they are not going to be
4644 routed further.
4646 PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
4647 It corrects a timeout issue with spamd. This is Ian's comment: "The
4648 background is that sometimes spamd either never reads data from a
4649 connection it has accepted, or it never writes response data. The exiscan
4650 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
4651 blindly assumes that writes won't block so it may never time out."
4653 PH/39 Allow G after quota size as well as K and M.
4655 PH/40 The value set for $authenticated_id in an authenticator may not contain
4656 binary zeroes or newlines because the value is written to log lines and
4657 to spool files. There was no check on this. Now the value is run through
4658 the string_printing() function so that such characters are converted to
4659 printable escape sequences.
4661 PH/41 $message_linecount is a new variable that contains the total number of
4662 lines in the message. Compare $body_linecount, which is the count for the
4663 body only.
4665 PH/42 Exim no longer gives details of delivery errors for specific addresses in
4666 bounce and delay warning messages, except in certain special cases, which
4667 are as follows:
4669 (a) An SMTP error message from a remote host;
4670 (b) A message specified in a :fail: redirection;
4671 (c) A message specified in a "fail" command in a system filter;
4672 (d) A message specified in a FAIL return from the queryprogram router;
4673 (e) A message specified by the cannot_route_message router option.
4675 In these cases only, Exim does include the error details in bounce and
4676 warning messages. There are also a few cases where bland messages such
4677 as "unrouteable address" or "local delivery error" are given.
4679 PH/43 $value is now also set for the "else" part of a ${run expansion.
4681 PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
4682 being worked on, but at least Exim now implements the latest version to
4683 play with."
4685 PH/45 In a pipe transport, although a timeout while waiting for the pipe
4686 process to complete was treated as a delivery failure, a timeout while
4687 writing the message to the pipe was logged, but erroneously treated as a
4688 successful delivery. Such timeouts include transport filter timeouts. For
4689 consistency with the overall process timeout, these timeouts are now
4690 treated as errors, giving rise to delivery failures by default. However,
4691 there is now a new Boolean option for the pipe transport called
4692 timeout_defer, which, if set TRUE, converts the failures into defers for
4693 both kinds of timeout. A transport filter timeout is now identified in
4694 the log output.
4696 PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
4697 systems where "make" and "gmake" are different, calling "gmake" at top
4698 level broke things. I've arranged for the value of $(MAKE) to be passed
4699 from the Makefile to this script so that it can call the same version of
4700 "make".
4703 A note about Exim versions 4.44 and 4.50
4704 ----------------------------------------
4706 Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
4707 changes of various kinds. As a consequence, a big documentation update was
4708 needed. This delayed the release for rather longer than seemed good, especially
4709 in the light of a couple of (minor) security issues. Therefore, the changes
4710 that fixed bugs were backported into 4.43, to create a 4.44 maintenance
4711 release. So 4.44 and 4.50 are in effect two different branches that both start
4712 from 4.43.
4714 I have left the 4.50 change log unchanged; it contains all the changes since
4715 4.43. The change log for 4.44 is below; many of its items are identical to
4716 those for 4.50. This seems to be the most sensible way to preserve the
4717 historical information.
4720 Exim version 4.50
4721 -----------------
4723 1. Minor wording change to the doc/README.SIEVE file.
4725 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
4726 computation of the current number of files was incorrect.
4728 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
4729 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
4730 place.
4732 4. Give more explanation in the error message when the command for a transport
4733 filter fails to execute.
4735 5. There are several places where Exim runs a non-Exim command in a
4736 subprocess. The SIGUSR1 signal should be disabled for these processes. This
4737 was being done only for the command run by the queryprogram router. It is
4738 now done for all such subprocesses. The other cases are: ${run, transport
4739 filters, and the commands run by the lmtp and pipe transports.
4741 6. Added CONFIGURE_GROUP build-time option.
4743 7. Some older OS have a limit of 256 on the maximum number of file
4744 descriptors. Exim was using setrlimit() to set 1000 as a large value
4745 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
4746 systems. I've change it so that if it can't get 1000, it tries for 256.
4748 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
4749 was an oversight, and furthermore, ever since the addition of extra
4750 controls (e.g. 4.43/32), the checks on when to allow different forms of
4751 "control" were broken. There should now be diagnostics for all cases when a
4752 control that does not make sense is encountered.
4754 9. Added the /retain_sender option to "control=submission".
4756 10. $recipients is now available in the predata ACL (oversight).
4758 11. Tidy the search cache before the fork to do a delivery from a message
4759 received from the command line. Otherwise the child will trigger a lookup
4760 failure and thereby defer the delivery if it tries to use (for example) a
4761 cached ldap connection that the parent has called unbind on.
4763 12. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
4764 of $address_data from the recipient verification was clobbered by the
4765 sender verification.
4767 13. The value of address_data from a sender verification is now available in
4768 $sender_address_data in subsequent conditions in the ACL statement.
4770 14. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
4772 15. Added a new option "connect=<time>" to callout options, to set a different
4773 connection timeout.
4775 16. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
4776 was its contents. (It was OK if the option was not defined at all.)
4778 17. A "Completed" log line is now written for messages that are removed from
4779 the spool by the -Mrm option.
4781 18. New variables $sender_verify_failure and $recipient_verify_failure contain
4782 information about exactly what failed.
4784 19. Added -dd to debug only the daemon process.
4786 20. Incorporated Michael Haardt's patch to ldap.c for improving the way it
4787 handles timeouts, both on the server side and network timeouts. Renamed the
4788 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
4790 21. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
4791 It is now set to "smtps".
4793 22. $host_address is now set to the target address during the checking of
4794 ignore_target_hosts.
4796 23. When checking ignore_target_hosts for an ipliteral router, no host name was
4797 being passed; this would have caused $sender_host_name to have been used if
4798 matching the list had actually called for a host name (not very likely,
4799 since this list is usually IP addresses). A host name is now passed as
4800 "[x.x.x.x]".
4802 24. Changed the calls that set up the SIGCHLD handler in the daemon to use the
4803 code that specifies a non-restarting handler (typically sigaction() in
4804 modern systems) in an attempt to fix a rare and obscure crash bug.
4806 25. Narrowed the window for a race in the daemon that could cause it to ignore
4807 SIGCHLD signals. This is not a major problem, because they are used only to
4808 wake it up if nothing else does.
4810 26. A malformed maildirsize file could cause Exim to calculate negative values
4811 for the mailbox size or file count. Odd effects could occur as a result.
4812 The maildirsize information is now recalculated if the size or filecount
4813 end up negative.
4815 27. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
4816 support for a long time. Removed HAVE_SYS_VFS_H.
4818 28. Installed the latest version of exipick from John Jetmore.
4820 29. In an address list, if the pattern was not a regular expression, an empty
4821 subject address (from a bounce message) matched only if the pattern was an
4822 empty string. Non-empty patterns were not even tested. This was the wrong
4823 because it is perfectly reasonable to use an empty address as part of a
4824 database query. An empty address is now tested by patterns that are
4825 lookups. However, all the other forms of pattern expect the subject to
4826 contain a local part and a domain, and therefore, for them, an empty
4827 address still always fails if the pattern is not itself empty.
4829 30. Exim went into a mad DNS loop when attempting to do a callout where the
4830 host was specified on an smtp transport, and looking it up yielded more
4831 than one IP address.
4833 31. Re-factored the code for checking spool and log partition space into a
4834 function that finds that data and another that does the check. The former
4835 is then used to implement four new variables: $spool_space, $log_space,
4836 $spool_inodes, and $log_inodes.
4838 32. The RFC2047 encoding function was originally intended for short strings
4839 such as real names; it was not keeping to the 75-character limit for
4840 encoded words that the RFC imposes. It now respects the limit, and
4841 generates multiple encoded words if necessary. To be on the safe side, I
4842 have increased the buffer size for the ${rfc2047: expansion operator from
4843 1024 to 2048 bytes.
4845 33. It is now permitted to omit both strings after an "if" condition; if the
4846 condition is true, the result is "true". As before, when the second string
4847 is omitted, a false condition yields an empty string. This makes it less
4848 cumbersome to write custom ACL and router conditions.
4850 34. Failure to deliver a bounce message always caused it to be frozen, even if
4851 there was an errors_to setting on the router. The errors_to setting is now
4852 respected.
4854 35. If an IPv6 address is given for -bh or -bhc, it is now converted to the
4855 canonical form (fully expanded) before being placed in
4856 $sender_host_address.
4858 36. The table in the code that translates DNS record types into text (T_A to
4859 "A" for instance) was missing entries for NS and CNAME. It is just possible
4860 that this could have caused confusion if both these types were looked up
4861 for the same domain, because the text type is used as part of Exim's
4862 per-process caching. But the chance of anyone hitting this buglet seems
4863 very small.
4865 37. The dnsdb lookup has been extended in a number of ways.
4867 (1) There is a new type, "zns", which walks up the domain tree until it
4868 finds some nameserver records. It should be used with care.
4870 (2) There is a new type, "mxh", which is like "mx" except that it returns
4871 just the host names, not the priorities.
4873 (3) It is now possible to give a list of domains (or IP addresses) to be
4874 looked up. The behaviour when one of the lookups defers can be
4875 controlled by a keyword.
4877 (4) It is now possible to specify the separator character for use when
4878 multiple records are returned.
4880 38. The dnslists ACL condition has been extended: it is now possible to supply
4881 a list of IP addresses and/or domains to be looked up in a particular DNS
4882 domain.
4884 39. Added log_selector=+queue_time_overall.
4886 40. When running the queue in the test harness, wait just a tad after forking a
4887 delivery process, to get repeatability of debugging output.
4889 41. Include certificate and key file names in error message when GnuTLS fails
4890 to set them up, because the GnuTLS error message doesn't include the name
4891 of the failing file when there is a problem reading it.
4893 42. Allow both -bf and -bF in the same test run.
4895 43. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
4897 44. The "Exiscan patch" is now merged into the mainline Exim source.
4899 45. Sometimes the final signoff response after QUIT could fail to get
4900 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
4901 < 0 before doing a fflush(). This bug looks as though it goes back to the
4902 introduction of TLS in release 3.20, but "sometimes" must have been rare
4903 because the tests only now provoked it.
4905 46. Reset the locale to "C" after calling embedded Perl, in case it was changed
4906 (this can affect the format of dates).
4908 47. exim_tidydb, when checking for the continued existence of a message for
4909 which it has found a message-specific retry record, was not finding
4910 messages that were in split spool directories. Consequently, it was
4911 deleting retry records that should have stayed in existence.
4913 48. Steve fixed some bugs in eximstats.
4915 49. The SPA authentication driver was not abandoning authentication and moving
4916 on to the next authenticator when an expansion was forced to fail,
4917 contradicting the general specification for all authenticators. Instead it
4918 was generating a temporary error. It now behaves as specified.
4920 50. The default ordering of permitted cipher suites for GnuTLS was pessimal
4921 (the order specifies the preference for clients). The order is now AES256,
4922 AES128, 3DES, ARCFOUR128.
4924 51. Small patch to Sieve code - explicitly set From: when generating an
4925 autoreply.
4927 52. Exim crashed if a remote delivery caused a very long error message to be
4928 recorded - for instance if somebody sent an entire SpamAssassin report back
4929 as a large number of 550 error lines. This bug was coincidentally fixed by
4930 increasing the size of one of Exim's internal buffers (big_buffer) that
4931 happened as part of the Exiscan merge. However, to be on the safe side, I
4932 have made the code more robust (and fixed the comments that describe what
4933 is going on).
4935 53. Now that there can be additional text after "Completed" in log lines (if
4936 the queue_time_overall log selector is set), a one-byte patch to exigrep
4937 was needed to allow it to recognize "Completed" as not the last thing in
4938 the line.
4940 54. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
4941 patch that reportedly fixes this has been added. I am not expert enough to
4942 create a test for it. This is what the patch creator wrote:
4944 "I found a little strange behaviour of ldap code when working with
4945 Windows 2003 AD Domain, where users was placed in more than one
4946 Organization Units. When I tried to give exim partial DN, the exit code
4947 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
4948 But simultaneously result of request was absolutely normal ldap result,
4949 so I produce this patch..."
4951 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
4952 REFERENCE, so I have modified the code to exclude the patch when that macro
4953 is not defined.
4955 55. Some experimental protocols are using DNS PTR records for new purposes. The
4956 keys for these records are domain names, not reversed IP addresses. The
4957 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
4958 leaves it alone. Component reversal etc. now happens only for IP addresses.
4959 CAN-2005-0021
4961 56. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
4963 57. Double the size of the debug message buffer (to 2048) so that more of very
4964 long debug lines gets shown.
4966 58. The exicyclog utility now does better if the number of log files to keep
4967 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
4969 59. Two changes related to the smtp_active_hostname option:
4971 (1) $smtp_active_hostname is now available as a variable.
4972 (2) The default for smtp_banner uses $smtp_active_hostname instead
4973 of $primary_hostname.
4975 60. The host_aton() function is supposed to be passed a string that is known
4976 to be a valid IP address. However, in the case of IPv6 addresses, it was
4977 not checking this. This is a hostage to fortune. Exim now panics and dies
4978 if the condition is not met. A case was found where this could be provoked
4979 from a dnsdb PTR lookup with an IPv6 address that had more than 8
4980 components; fortuitously, this particular loophole had already been fixed
4981 by change 4.50/55 above.
4983 If there are any other similar loopholes, the new check in host_aton()
4984 itself should stop them being exploited. The report I received stated that
4985 data on the command line could provoke the exploit when Exim was running as
4986 exim, but did not say which command line option was involved. All I could
4987 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
4988 running as the user.
4989 CAN-2005-0021
4991 61. There was a buffer overflow vulnerability in the SPA authentication code
4992 (which came originally from the Samba project). I have added a test to the
4993 spa_base64_to_bits() function which I hope fixes it.
4994 CAN-2005-0022
4996 62. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
4997 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
4999 63. The daemon start-up calls getloadavg() while still root for those OS that
5000 need the first call to be done as root, but it missed one case: when
5001 deliver_queue_load_max is set with deliver_drop_privilege. This is
5002 necessary for the benefit of the queue runner, because there is no re-exec
5003 when deliver_drop_privilege is set.
5005 64. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
5006 This has been fixed.
5008 65. Caching of lookup data for "hosts =" ACL conditions, when a named host list
5009 was in use, was not putting the data itself into the right store pool;
5010 consequently, it could be overwritten for a subsequent message in the same
5011 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
5012 the caching.)
5014 66. Added hosts_max_try_hardlimit to the smtp transport, default 50.
5016 67. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
5017 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
5018 the function were treating the return as a boolean value, which happened to
5019 work because 0=false and not-0=true, but is not correct code.
5021 68. The host_aton() function was not handling scoped IPv6 addresses (those
5022 with, for example, "%eth0" on the end) correctly.
5024 69. Fixed some compiler warnings in acl.c for the bitmaps specified with
5025 negated items (that is, ~something) in unsigned ints. Some compilers
5026 apparently mutter when there is no cast.
5028 70. If an address verification called from an ACL failed, and did not produce a
5029 user-specific message (i.e. there was only a "system" message), nothing was
5030 put in $acl_verify_message. In this situation, it now puts the system
5031 message there.