59281817e64f10fe897f698e34851629249f4d18
[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.
6
7
8 Exim version 4.92
9 -----------------
10
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.
13
14 JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
15 non-signal-safe functions being used.
16
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.
20
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.
24
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.
31
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.
34
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.
42
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".
45
46 JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
47 legitimate.
48
49 JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
50 Previously this would segfault.
51
52 JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
53 segfault.
54
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.
61
62 JH/12 Add client-ip info to non-pass iprev ${authres } lines.
63
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).
68
69 JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
70
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.
75
76 JH/16 Fix ARC verification to do AS checks in reverse order.
77
78 JH/17 Support a "tls" option on the ${readsocket } expansion item.
79
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.
83
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.
87
88 PP/02 Let -n work with printing macros too, not just options.
89
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.
94
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.
98
99 PP/04 Documentation: current string operators work on bytes, not codepoints.
100
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.
106
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.
110
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.
114
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.
118
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.
122
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).
127
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.
131
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.
136
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.
139
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.
144
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.
148
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.
153
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.
157
158 JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
159 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
160 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
161 GNUTLS_SEC_PARAM_MEDIUM.
162
163 JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server
164 side. Previously we would continue as if no SNI had been received.
165
166 JH/36 Harder the handling of string-lists. When a list consisted of a sole
167 "<" character, which should be a list-separator specification, we walked
168 off past the nul-terimation.
169
170
171 Exim version 4.91
172 -----------------
173
174 GF/01 DEFER rather than ERROR on redis cluster MOVED response.
175 When redis_servers is set to a list of > 1 element, and the Redis servers
176 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
177 case of MOVED into a DEFER case instead, thus moving the query onto the
178 next server in the list. For a cluster of N elements, all N servers must
179 be defined in redis_servers.
180
181 GF/02 Catch and remove uninitialized value warning in exiqsumm
182 Check for existence of @ARGV before looking at $ARGV[0]
183
184 JH/01 Replace the store_release() internal interface with store_newblock(),
185 which internalises the check required to safely use the old one, plus
186 the allocate and data copy operations duplicated in both (!) of the
187 extant use locations.
188
189 JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
190 modifier. This matches the restriction on the commandline.
191
192 JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
193 Previously only the last row was returned.
194
195 JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
196 we assumed that tags in the header were well-formed, and parsed the
197 element content after inspecting only the first char of the tag.
198 Assumptions at that stage could crash the receive process on malformed
199 input.
200
201 JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
202 While running the DKIM ACL we operate on the Permanent memory pool so that
203 variables created with "set" persist to the DATA ACL. Also (at any time)
204 DNS lookups that fail create cache records using the Permanent pool. But
205 expansions release any allocations made on the current pool - so a dnsdb
206 lookup expansion done in the DKIM ACL releases the memory used for the
207 DNS negative-cache, and bad things result. Solution is to switch to the
208 Main pool for expansions.
209 While we're in that code, add checks on the DNS cache during store_reset,
210 active in the testsuite.
211 Problem spotted, and debugging aided, by Wolfgang Breyha.
212
213 JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
214 When none of the hosts presented to a transport match an already-open
215 connection, close it and proceed with the list. Previously we would
216 queue the message. Spotted by Lena with Yahoo, probably involving
217 round-robin DNS.
218
219 JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
220 Previously a spurious "250 OK id=" response was appended to the proper
221 failure response.
222
223 JH/08 The "support for" informational output now, which built with Content
224 Scanning support, has a line for the malware scanner interfaces compiled
225 in. Interface can be individually included or not at build time.
226
227 JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
228 by the template makefile "src/EDITME". The "STREAM" support for an older
229 ClamAV interface method is removed.
230
231 JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
232 rows affected is given instead).
233
234 JH/11 The runtime Berkeley DB library version is now additionally output by
235 "exim -d -bV". Previously only the compile-time version was shown.
236
237 JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
238 SMTP connection. Previously, when one had more receipients than the
239 first, an abortive onward connection was made. Move to full support for
240 multiple onward connections in sequence, handling cutthrough connection
241 for all multi-message initiating connections.
242
243 JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
244 routers. Previously, a multi-recipient message would fail to match the
245 onward-connection opened for the first recipient, and cause its closure.
246
247 JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
248 a timeout on read on a GnuTLS initiating connection, resulting in the
249 initiating connection being dropped. This mattered most when the callout
250 was marked defer_ok. Fix to keep the two timeout-detection methods
251 separate.
252
253 JH/15 Relax results from ACL control request to enable cutthrough, in
254 unsupported situations, from error to silently (except under debug)
255 ignoring. This covers use with PRDR, frozen messages, queue-only and
256 fake-reject.
257
258 HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
259
260 JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
261 metadata, resulting in a crash in free().
262
263 PP/01 Fix broken Heimdal GSSAPI authenticator integration.
264 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
265 Broken also in d185889f4, with init system revamp.
266
267 JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
268 Previously we abruptly closed the connection after reading a malware-
269 found indication; now we go on to read the "scan ok" response line,
270 and send a quit.
271
272 JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
273 ACL. Previously, a crash would result.
274
275 JH/19 Speed up macro lookups during configuration file read, by skipping non-
276 macro text after a replacement (previously it was only once per line) and
277 by skipping builtin macros when searching for an uppercase lead character.
278
279 JH/20 DANE support moved from Experimental to mainline. The Makefile control
280 for the build is renamed.
281
282 JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
283 was allocated for every new TLS startup, meaning one per message. Fix
284 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
285
286 JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
287 reported the original. Fix to report (as far as possible) the ACL
288 result replacing the original.
289
290 JH/23 Fix memory leak during multi-message connections using STARTTLS under
291 OpenSSL. Certificate information is loaded for every new TLS startup,
292 and the resources needed to be freed.
293
294 JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
295
296 JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
297 was not propagated.
298
299 JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
300 DATA response info to the (existing) per-recipient response info for
301 the "C=" log element. It can have useful tracking info from the
302 destination system. Patch from Simon Arlott.
303
304 JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
305 length value. Previously this would segfault.
306
307 HS/02 Support Avast multiline protoocol, this allows passing flags to
308 newer versions of the scanner.
309
310 JH/28 Ensure that variables possibly set during message acceptance are marked
311 dead before release of memory in the daemon loop. This stops complaints
312 about them when the debug_store option is enabled. Discovered specifically
313 for sender_rate_period, but applies to a whole set of variables.
314 Do the same for the queue-runner and queue-list loops, for variables set
315 from spool message files. Do the same for the SMTP per-message loop, for
316 certain variables indirectly set in ACL operations.
317
318 JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
319 as a multi-recipient message from a mailinglist manager). The coding had
320 an arbitrary cutoff number of characters while checking for more input;
321 enforced by writing a NUL into the buffer. This corrupted long / fast
322 input. The problem was exposed more widely when more pipelineing of SMTP
323 responses was introduced, and one Exim system was feeding another.
324 The symptom is log complaints of SMTP syntax error (NUL chars) on the
325 receiving system, and refused recipients seen by the sending system
326 (propating to people being dropped from mailing lists).
327 Discovered and pinpointed by David Carter.
328
329 JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
330 replaced by the ${authresults } expansion.
331
332 JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
333
334 HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
335 allows proper process termination in container environments.
336
337 JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
338 Previously the "final dot" had a newline after it; ensure it is CR,LF.
339
340 JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
341 and "err_perm", deprecated since 4.83 when the RFC-defined words
342 "temperror" and "permerror" were introduced.
343
344 JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
345 transport-filters or DKIM-signing. The restriction was lost in the
346 consolidation of verify-callout and delivery SMTP handling.
347 Extend the restriction to also cover ARC-signing.
348
349 JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
350 in defer=pass mode supply a 450 to the initiator. Previously the message
351 would be spooled.
352
353 PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
354 tls_require_ciphers is used as before.
355
356 HS/03 Malware Avast: Better match the Avast multiline protocol. Add
357 "pass_unscanned". Only tmpfails from the scanner are written to
358 the paniclog, as they may require admin intervention (permission
359 denied, license issues). Other scanner errors (like decompression
360 bombs) do not cause a paniclog entry.
361
362 JH/36 Fix reinitialisation of DKIM logging variable between messages.
363 Previously it was possible to log spurious information in receive log
364 lines.
365
366 JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
367 triggered odd behaviour from Outlook Express clients.
368
369 PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
370 suffix list.
371
372 JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
373 since the IETF WG has not yet settled on that versus the original
374 "bare" representation.
375
376 JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
377 Previously the millisecond value corrupted the output.
378 Fix also for syslog_pid=no and log_selector +pid, for which the pid
379 corrupted the output.
380
381
382 Exim version 4.90
383 -----------------
384
385 JH/01 Rework error string handling in TLS interface so that the caller in
386 more cases is responsible for logging. This permits library-sourced
387 string to be attached to addresses during delivery, and collapses
388 pairs of long lines into single ones.
389
390 PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
391 during configuration. Wildcards are allowed and expanded.
392
393 JH/02 Rework error string handling in DKIM to pass more info back to callers.
394 This permits better logging.
395
396 JH/03 Rework the transport continued-connection mechanism: when TLS is active,
397 do not close it down and have the child transport start it up again on
398 the passed-on TCP connection. Instead, proxy the child (and any
399 subsequent ones) for TLS via a unix-domain socket channel. Logging is
400 affected: the continued delivery log lines do not have any DNSSEC, TLS
401 Certificate or OCSP information. TLS cipher information is still logged.
402
403 JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
404 identical IP addresses on different listening ports. Will also affect
405 "exiwhat" output.
406
407 PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
408 add noisy ifdef guards to special-case this sillyness.
409 Patch from Bernd Kuhls.
410
411 JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
412 than 255 are no longer allowed.
413
414 JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
415 Disable the session-cache too, which might reduce our load. Since we
416 currrectly use a new context for every connection, both as server and
417 client, there is no benefit for these.
418 GnuTLS appears to not support tickets server-side by default (we don't
419 call gnutls_session_ticket_enable_server()) but client side is enabled
420 by default on recent versions (3.1.3 +) unless the PFS priority string
421 is used (3.2.4 +).
422
423 PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
424 <https://reproducible-builds.org/specs/source-date-epoch/>.
425
426 JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
427 the check for any unsuccessful recipients did not notice the limit, and
428 erroneously found still-pending ones.
429
430 JH/08 Pipeline CHUNKING command and data together, on kernels that support
431 MSG_MORE. Only in-clear (not on TLS connections).
432
433 JH/09 Avoid using a temporary file during transport using dkim. Unless a
434 transport-filter is involved we can buffer the headers in memory for
435 creating the signature, and read the spool data file once for the
436 signature and again for transmission.
437
438 JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
439 4.77 as the kernel support then wasn't solid, having issues in 64bit
440 mode. Now, it's been long enough. Add support for FreeBSD also.
441
442 JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
443 case where the routing stage had gathered several addresses to send to
444 a host before calling the transport for the first, we previously failed
445 to close down TLS in the old transport process before passing the TCP
446 connection to the new process. The new one sent a STARTTLS command
447 which naturally failed, giving a failed delivery and bloating the retry
448 database. Investigation and fix prototype from Wolfgang Breyha.
449
450 JH/12 Fix check on SMTP command input synchronisation. Previously there were
451 false-negatives in the check that the sender had not preempted a response
452 or prompt from Exim (running as a server), due to that code's lack of
453 awareness of the SMTP input buffering.
454
455 PP/04 Add commandline_checks_require_admin option.
456 Exim drops privileges sanely, various checks such as -be aren't a
457 security problem, as long as you trust local users with access to their
458 own account. When invoked by services which pass untrusted data to
459 Exim, this might be an issue. Set this option in main configuration
460 AND make fixes to the calling application, such as using `--` to stop
461 processing options.
462
463 JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
464 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
465 responses to those, into a single TLS record each way (this usually means
466 a single packet). As a side issue, smtp_enforce_sync now works on TLS
467 connections.
468
469 PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
470 affects you only if you're dancing at the edge of the param size limits.
471 If you are, and this message makes sense to you, then: raise the
472 configured limit or use OpenSSL 1.1. Nothing we can do for older
473 versions.
474
475 JH/14 For the "sock" variant of the malware scanner interface, accept an empty
476 cmdline element to get the documented default one. Previously it was
477 inaccessible.
478
479 JH/15 Fix a crash in the smtp transport caused when two hosts in succession
480 are unsuable for non-message-specific reasons - eg. connection timeout,
481 banner-time rejection.
482
483 JH/16 Fix logging of delivery remote port, when specified by router, under
484 callout/hold.
485
486 PP/06 Repair manualroute's ability to take options in any order, even if one
487 is the name of a transport.
488 Fixes bug 2140.
489
490 HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
491
492 JH/17 Change the list-building routines interface to use the expanding-string
493 triplet model, for better allocation and copying behaviour.
494
495 JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
496 Previously it was constructed the first time a possibly-matching string
497 was met in the configuration file input during startup; now it is done
498 during compilation.
499
500 JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
501 compatible one, to avoid the (poorly documented) possibility of a config
502 file in the working directory redirecting the DB files, possibly correpting
503 some existing file. CVE-2017-10140 assigned for BDB.
504
505 JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
506 cache-hot. Previously, although the result was properly cached, the
507 initial verify call returned a defer.
508
509 JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
510 the main verify for receipient in uncached-mode.
511
512 JH/22 Retire historical build files to an "unsupported" subdir. These are
513 defined as "ones for which we have no current evidence of testing".
514
515 JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
516 if present. Previously it was ignored.
517
518 JH/24 Start using specified-initialisers in C structure init coding. This is
519 a C99 feature (it's 2017, so now considered safe).
520
521 JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
522 if was a fixed-sized field and bitmask ops via macros; it is now more
523 extensible.
524
525 PP/07 GitHub PR 56: Apply MariaDB build fix.
526 Patch provided by Jaroslav Škarvada.
527
528 PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
529 during Coverity cleanups [4.87 JH/47]
530 Diagnosis and fix provided by Michael Fischer v. Mollard.
531
532 JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
533 the right size to place the terminating semicolon on its own folded
534 line, the header hash was calculated to an incorrect value thanks to
535 the (relaxed) space the fold became.
536
537 HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
538 and confused the parent.
539
540 JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
541 which could crash as a result. This could lead to undeliverable messages.
542
543 JH/28 Logging: "next input sent too soon" now shows where input was truncated
544 for log purposes.
545
546 JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
547 matters on fast-turnover and PID-randomising systems, which were getting
548 out-of-order delivery.
549
550 JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
551 a possibly-overlapping copy. The symptom was that "Remote host closed
552 connection in response to HELO" was logged instead of the actual 4xx
553 error for the HELO.
554
555 JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
556 Previously only that bufferd was discarded, resulting in SYMTP command
557 desynchronisation.
558
559 JH/32 DKIM: when a message has multiple signatures matching an identity given
560 in dkim_verify_signers, run the dkim acl once for each. Previously only
561 one run was done. Bug 2189.
562
563 JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
564 "panic the current process" to "deliberately defer". The panic log is
565 still written with the problem list name; the mail and reject logs now
566 get a temp-reject line for the message that was being handled, saying
567 something like "domains check lookup or other defer". The SMTP 451
568 message is still "Temporary local problem".
569
570 JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
571 A crafted sequence of BDAT commands could result in in-use memory beeing
572 freed. CVE-2017-16943.
573
574 HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
575 from SMTP input. Previously it was always done; now only done for DATA
576 and not BDAT commands. CVE-2017-16944.
577
578 JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
579 to the message (such as an overlong header line). Previously this was
580 not done and we did not exit BDAT mode. Followon from the previous item
581 though a different problem.
582
583
584 Exim version 4.89
585 -----------------
586
587 JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
588 than -2003 did; needs libidn2 in addition to libidn.
589
590 JH/02 The path option on a pipe transport is now expanded before use.
591
592 PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
593 Patch provided by "Björn", documentation fix added too.
594
595 JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
596 missing a wire-to-host endian conversion.
597
598 JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
599 close after a BDAT command line could be taken as a following command,
600 giving a synch failure. Fix by only checking for synch immediately
601 before acknowledging the chunk.
602
603 PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
604 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
605 macro. Patches provided by Josh Soref.
606
607 JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
608 Previously we did not; the RFC seems ambiguous and VRFY is not listed
609 by IANA as a service extension. However, John Klensin suggests that we
610 should.
611
612 JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
613 the dkim code may be unix-mode line endings rather than smtp wire-format
614 CRLF, so prepend a CR to any bare LF.
615
616 JH/07 Rationalise the coding for callout smtp conversations and transport ones.
617 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
618
619 JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
620 the first were themselves being wrongly included in the feed into dkim
621 processing; with most chunk sizes in use this resulted in an incorrect
622 body hash calculated value.
623
624 JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
625 DKIM signature block, for verification. Although advised against by
626 standards it is specifically not ruled illegal.
627
628 JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
629
630 JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
631 missing a body hash (the bh= tag).
632
633 JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
634 It seems that HAProxy sends the Proxy Protocol information in clear and
635 only then does a TLS startup, so do the same.
636
637 JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
638 TCP connections (such as for Spamd) unless the daemon successfully set
639 Fast Open mode on its listening sockets. This fixes breakage seen on
640 too-old kernels or those not configured for Fast Open, at the cost of
641 requiring both directions being enabled for TFO, and TFO never being used
642 by non-daemon-related Exim processes.
643
644 JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
645 endings, at least on the first header line. Try to canonify any that get
646 past that check, despite the cost.
647
648 JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
649 now limited to an arbitrary five deep, while parsing addresses with the
650 strip_excess_angle_brackets option enabled.
651
652 PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
653 instead leave the unprompted TLS handshake in socket buffer for the
654 TLS library to consume.
655
656 PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
657
658 PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
659
660 JH/16 Drop variables when they go out of scope. Memory management drops a whole
661 region in one operation, for speed, and this leaves assigned pointers
662 dangling. Add checks run only under the testsuite which checks all
663 variables at a store-reset and panics on a dangling pointer; add code
664 explicitly nulling out all the variables discovered. Fixes one known
665 bug: a transport crash, where a dangling pointer for $sending_ip_address
666 originally assigned in a verify callout, is re-used.
667
668 PP/06 Drop '.' from @INC in various Perl scripts.
669
670 PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
671
672 PP/08 Reduce a number of compilation warnings under clang; building with
673 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
674 should be warning-free.
675
676 JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
677
678 HS/01 Fix portability problems introduced by PP/08 for platforms where
679 realloc(NULL) is not equivalent to malloc() [SunOS et al].
680
681 HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
682 chunk. This allows us to accept broken chunked messages. We need a more
683 general solution here.
684
685 PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
686 already-broken messages in the queue.
687
688 JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
689
690 JH/19 Fix reference counting bug in routing-generated-address tracking.
691
692
693 Exim version 4.88
694 -----------------
695
696 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
697 supports it and a size is available (ie. the sending peer gave us one).
698
699 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
700 years of being deprecated). The replacements are the ACLs
701 acl_smtp_mime and acl_not_smtp_mime.
702
703 JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
704 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
705 or even an in-clear connection were permitted. Now, if the host lookup
706 was dnssec and dane was requested then the host is only used if the
707 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
708 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
709 if one fails this test.
710 This means that a poorly-configured remote DNS will make it incommunicado;
711 but it protects against a DNS-interception attack on it.
712
713 JH/04 Bug 1810: make continued-use of an open smtp transport connection
714 non-noisy when a race steals the message being considered.
715
716 JH/05 If main configuration option tls_certificate is unset, generate a
717 self-signed certificate for inbound TLS connections.
718
719 JH/06 Bug 165: hide more cases of password exposure - this time in expansions
720 in rewrites and routers.
721
722 JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
723 and logged a warning sing 4.83; now they are a configuration file error.
724
725 JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
726 (lacking @domain). Apply the same qualification processing as RCPT.
727
728 JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
729
730 JH/10 Support ${sha256:} applied to a string (as well as the previous
731 certificate).
732
733 JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
734 a cutthrough deliver is pending, as we always want to make a connection.
735 This also avoids re-routing the message when later placing the cutthrough
736 connection after a verify cache hit.
737 Do not update it with the verify result either.
738
739 JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
740 when routing results in more than one destination address.
741
742 JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
743 signing (which inhibits the cutthrough capability). Previously only
744 the presence of an option was tested; now an expansion evaluating as
745 empty is permissible (obviously it should depend only on data available
746 when the cutthrough connection is made).
747
748 JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
749 the relevant preceding SMTP command did not note the pipelining mode.
750
751 JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
752 Previously they were not counted.
753
754 JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
755 as one having no matching records. Previously we deferred the message
756 that needed the lookup.
757
758 JH/17 Fakereject: previously logged as a normal message arrival "<="; now
759 distinguished as "(=".
760
761 JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
762 for missing MX records. Previously it only worked for missing A records.
763
764 JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
765
766 JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
767 after the data-go-ahead and data-ack. Patch from Jason Betts.
768
769 JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
770 even for a "none" policy. Patch from Tony Meyer.
771
772 JH/22 Fix continued use of a connection for further deliveries. If a port was
773 specified by a router, it must also match for the delivery to be
774 compatible.
775
776 JH/23 Bug 1874: fix continued use of a connection for further deliveries.
777 When one of the recipients of a message was unsuitable for the connection
778 (has no matching addresses), we lost track of needing to mark it
779 deferred. As a result mail would be lost.
780
781 JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
782
783 JH/25 Decoding ACL controls is now done using a binary search; the source code
784 takes up less space and should be simpler to maintain. Merge the ACL
785 condition decode tables also, with similar effect.
786
787 JH/26 Fix problem with one_time used on a redirect router which returned the
788 parent address unchanged. A retry would see the parent address marked as
789 delivered, so not attempt the (identical) child. As a result mail would
790 be lost.
791
792 JH/27 Fix a possible security hole, wherein a process operating with the Exim
793 UID can gain a root shell. Credit to http://www.halfdog.net/ for
794 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
795 itself :(
796
797 JH/28 Enable {spool,log} filesystem space and inode checks as default.
798 Main config options check_{log,spool}_{inodes,space} are now
799 100 inodes, 10MB unless set otherwise in the configuration.
800
801 JH/29 Fix the connection_reject log selector to apply to the connect ACL.
802 Previously it only applied to the main-section connection policy
803 options.
804
805 JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
806
807 PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
808 by me. Added RFC7919 DH primes as an alternative.
809
810 PP/02 Unbreak build via pkg-config with new hash support when crypto headers
811 are not in the system include path.
812
813 JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
814 GnuTLS, when a session startup failed (eg because the client disconnected)
815 Exim did stdio operations after fclose. This was exposed by a recent
816 change which nulled out the file handle after the fclose.
817
818 JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
819 signed directly by the cert-signing cert, rather than an intermediate
820 OCSP-signing cert. This is the model used by LetsEncrypt.
821
822 JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
823
824 HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
825 an incoming connection.
826
827 HS/02 Bug 1802: Do not half-close the connection after sending a request
828 to rspamd.
829
830 HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
831 fallback to "prime256v1".
832
833 JH/34 SECURITY: Use proper copy of DATA command in error message.
834 Could leak key material. Remotely exploitable. CVE-2016-9963.
835
836
837 Exim version 4.87
838 -----------------
839
840 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
841 and 3.4.4 - once the server is enabled to respond to an OCSP request
842 it does even when not requested, resulting in a stapling non-aware
843 client dropping the TLS connection.
844
845 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
846 support variable-length bit vectors. No functional change.
847
848 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
849 The I= interface field on outgoing lines is now after the H= remote
850 host field, same as incoming lines. There is a separate
851 outgoing_interface log selector which allows you to disable the
852 outgoing I= field.
853
854 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
855 If not running log_selector +smtp_connection the mainlog would be held
856 open indefinitely after a "too many connections" event, including to a
857 deleted file after a log rotate. Leave the per net connection logging
858 leaving it open for efficiency as that will be quickly detected by the
859 check on the next write.
860
861 HS/01 Bug 1671: Fix post transport crash.
862 Processing the wait-<transport> messages could crash the delivery
863 process if the message IDs didn't exist for some reason. When
864 using 'split_spool_directory=yes' the construction of the spool
865 file name failed already, exposing the same netto behaviour.
866
867 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
868 mime_regex ACL conditions.
869
870 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
871 to DSN fail messages (bounces): remote IP, remote greeting, remote response
872 to HELO, local diagnostic string.
873
874 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
875 log line to debug. Even when configured with a tls authenticator many
876 client connections are expected to not authenticate in this way, so
877 an authenticate fail is not an error.
878
879 HS/02 Add the Exim version string to the process info. This way exiwhat
880 gives some more detail about the running daemon.
881
882 JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
883 matter for fast-change records such as DNSBLs.
884
885 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
886 retry record, even if constant. There may be multiple transports with
887 different interface settings and the retry behaviour needs to be kept
888 distinct.
889
890 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
891
892 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
893
894 JH/10 Bug 840: fix log_defer_output option of pipe transport
895
896 JH/11 Bug 830: use same host for all RCPTS of a message, even under
897 hosts_randomize. This matters a lot when combined with mua_wrapper.
898
899 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
900 ${quote_pgsql:<string>} operator.
901
902 JH/13 Bug 1708: avoid misaligned access in cached lookup.
903
904 JH/14 Change header file name for freeradius-client. Relevant if compiling
905 with Radius support; from the Gentoo tree and checked under Fedora.
906
907 JH/15 Bug 1712: Introduce $prdr_requested flag variable
908
909 JH/16 Bug 1714: Permit an empty string as expansion result for transport
910 option transport_filter, meaning no filtering.
911
912 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
913
914 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
915 defaults to "*" (all hosts). The variable is now available when not built
916 with TLS, default unset, mainly to enable keeping the testsuite sane.
917 If a server certificate is not supplied (via tls_certificate) an error is
918 logged, and clients will find TLS connections fail on startup. Presumably
919 they will retry in-clear.
920 Packagers of Exim are strongly encouraged to create a server certificate
921 at installation time.
922
923 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
924 with the $config_file variable.
925
926 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
927 in transport context, after the attempt, and per-recipient. The latter type
928 is per host attempted. The event data is the error message, and the errno
929 information encodes the lookup type (A vs. MX) used for the (first) host,
930 and the trailing two digits of the smtp 4xx response.
931
932 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
933 to write to mainlog (or rejectlog, paniclog) in the window between file
934 creation and permissions/ownership being changed. Particularly affects
935 installations where exicyclog is run as root, rather than exim user;
936 result is that the running daemon panics and dies.
937
938 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
939
940 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
941 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
942 "pri" and "weight". Note that the previous implicit priority given by the
943 list order is no longer honoured.
944
945 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
946 for DKIM processing.
947
948 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
949 by defining SUPPORT_SOCKS.
950
951 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
952 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
953 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
954 variables are renamed to proxy_{local,external}_{address,port}.
955
956 JH/27 Move Internationalisation support from Experimental to mainline, enabled
957 for a build by defining SUPPORT_I18N
958
959 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
960 of the query string, and make ${quote_redis:} do that quoting.
961
962 JH/29 Move Events support from Experimental to mainline, enabled by default
963 and removable for a build by defining DISABLE_EVENT.
964
965 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
966
967 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
968 cached by the daemon.
969
970 JH/32 Move Redis support from Experimental to mainline, enabled for a build
971 by defining LOOKUP_REDIS. The libhiredis library is required.
972
973 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
974 keys are given for lookup.
975
976 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
977 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
978 only supported when built with TLS support. The PolarSSL SHA routines
979 are still used when the TLS library is too old for convenient support.
980
981 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
982 openssl_options), for security. OpenSSL forces this from version 1.1.0
983 server-side so match that on older versions.
984
985 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
986 allocation for $value could be released as the expansion processing
987 concluded, but leaving the global pointer active for it.
988
989 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
990 and to use the domains and local_parts ACL conditions.
991
992 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
993 incorrectly not doubled on cutthrough transmission, hence seen as a
994 body-termination at the receiving system - resulting in truncated mails.
995 Commonly the sender saw a TCP-level error, and retransmitted the message
996 via the normal store-and-forward channel. This could result in duplicates
997 received - but deduplicating mailstores were liable to retain only the
998 initial truncated version.
999
1000 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
1001
1002 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1003
1004 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1005 we're in there, support oversigning also; bug 1309.
1006
1007 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1008
1009 HS/04 Add support for keep_environment and add_environment options.
1010
1011 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1012 either intentional arithmetic overflow during PRNG, or testing config-
1013 induced overflows.
1014
1015 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1016 delivery resulted in actual delivery. Cancel cutthrough before DATA
1017 stage.
1018
1019 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1020 rejects a recipient: pass the reject to the originator.
1021
1022 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1023 Many were false-positives and ignorable, but it's worth fixing the
1024 former class.
1025
1026 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1027 for the new environment-manipulation done at startup. Move the routines
1028 from being local to tls.c to being global via the os.c file.
1029
1030 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1031 an extract embedded as result-arg for a map, the first arg for extract
1032 is unavailable so we cannot tell if this is a numbered or keyed
1033 extraction. Accept either.
1034
1035
1036 Exim version 4.86
1037 -----------------
1038
1039 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1040 expanded.
1041
1042 JH/02 The smtp transport option "multi_domain" is now expanded.
1043
1044 JH/03 The smtp transport now requests PRDR by default, if the server offers
1045 it.
1046
1047 JH/04 Certificate name checking on server certificates, when exim is a client,
1048 is now done by default. The transport option tls_verify_cert_hostnames
1049 can be used to disable this per-host. The build option
1050 EXPERIMENTAL_CERTNAMES is withdrawn.
1051
1052 JH/05 The value of the tls_verify_certificates smtp transport and main options
1053 default to the word "system" to access the system default CA bundle.
1054 For GnuTLS, only version 3.0.20 or later.
1055
1056 JH/06 Verification of the server certificate for a TLS connection is now tried
1057 (but not required) by default. The verification status is now logged by
1058 default, for both outbound TLS and client-certificate supplying inbound
1059 TLS connections
1060
1061 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1062 sites use this now.
1063
1064 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1065 Status Notification (bounce) messages are now MIME format per RFC 3464.
1066 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1067 under the control of the dsn_advertise_hosts option, and routers may
1068 have a dsn_lasthop option.
1069
1070 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1071 default, modifiable by a malware= option. The list separator for
1072 the options can now be changed in the usual way. Bug 68.
1073
1074 JH/10 The smtp_receive_timeout main option is now expanded before use.
1075
1076 JH/11 The incoming_interface log option now also enables logging of the
1077 local interface on delivery outgoing connections.
1078
1079 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1080 if the interface and destination host and port all match.
1081
1082 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1083 /defer_ok option.
1084
1085 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1086 Patch from Andrew Lewis.
1087
1088 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
1089 now supports optional time-restrictions, weighting, and priority
1090 modifiers per server. Patch originally by <rommer@active.by>.
1091
1092 JH/16 The spamd_address main option now supports a mixed list of local
1093 and remote servers. Remote servers can be IPv6 addresses, and
1094 specify a port-range.
1095
1096 JH/17 Bug 68: The spamd_address main option now supports an optional
1097 timeout value per server.
1098
1099 JH/18 Bug 1581: Router and transport options headers_add/remove can
1100 now have the list separator specified.
1101
1102 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
1103 option values.
1104
1105 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
1106 under OpenSSL.
1107
1108 JH/21 Support for the A6 type of dns record is withdrawn.
1109
1110 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1111 rather than the verbs used.
1112
1113 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1114 from 255 to 1024 chars.
1115
1116 JH/24 Verification callouts now attempt to use TLS by default.
1117
1118 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
1119 are generic router options now. The defaults didn't change.
1120
1121 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1122 Original patch from Alexander Shikoff, worked over by JH.
1123
1124 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1125 files if ZCAT_COMMAND is not executable.
1126
1127 JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
1128
1129 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1130
1131 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1132 Normally benign, it bites when the pair was led to by a CNAME;
1133 modern usage is to not canonicalize the domain to a CNAME target
1134 (and we were inconsistent anyway for A-only vs AAAA+A).
1135
1136 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1137
1138 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1139 when evaluating $sender_host_dnssec.
1140
1141 JH/31 Check the HELO verification lookup for DNSSEC, adding new
1142 $sender_helo_dnssec variable.
1143
1144 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1145
1146 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1147
1148 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1149
1150 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1151 documented as working, but never had. Support all but $spam_report.
1152
1153 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1154 added for tls authenticator.
1155
1156 HS/03 Add perl_taintmode main config option
1157
1158
1159 Exim version 4.85
1160 -----------------
1161
1162 TL/01 When running the test suite, the README says that variables such as
1163 no_msglog_check are global and can be placed anywhere in a specific
1164 test's script, however it was observed that placement needed to be near
1165 the beginning for it to behave that way. Changed the runtest perl
1166 script to read through the entire script once to detect and set these
1167 variables, reset to the beginning of the script, and then run through
1168 the script parsing/test process like normal.
1169
1170 TL/02 The BSD's have an arc4random API. One of the functions to induce
1171 adding randomness was arc4random_stir(), but it has been removed in
1172 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1173 function when detected.
1174
1175 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1176 cause callback expansion.
1177
1178 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1179 syntax errors in an expansion can be treated as a string instead of
1180 logging or causing an error, due to the internal use of bool_lax
1181 instead of bool when processing it.
1182
1183 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
1184 server certificates when making smtp deliveries.
1185
1186 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1187
1188 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1189
1190 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1191
1192 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1193 Merged patch from Sebastian Wiedenroth.
1194
1195 JH/05 Fix results-pipe from transport process. Several recipients, combined
1196 with certificate use, exposed issues where response data items split
1197 over buffer boundaries were not parsed properly. This eventually
1198 resulted in duplicates being sent. This issue only became common enough
1199 to notice due to the introduction of connection certificate information,
1200 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1201
1202 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1203 size buffer was used, resulting in syntax errors when an expansion
1204 exceeded it.
1205
1206 JH/07 Add support for directories of certificates when compiled with a GnuTLS
1207 version 3.3.6 or later.
1208
1209 JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
1210 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1211 both become "event_action", the variables become $event_name, $event_data
1212 and $event_defer_errno. There is a new variable $verify_mode, usable in
1213 routers, transports and related events. The tls:cert event is now also
1214 raised for inbound connections, if the main configuration event_action
1215 option is defined.
1216
1217 TL/06 In test suite, disable OCSP for old versions of openssl which contained
1218 early OCSP support, but no stapling (appears to be less than 1.0.0).
1219
1220 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1221 server certificate names available under the smtp transport option
1222 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1223 matches.
1224
1225 JH/10 Time-related extraction expansions from certificates now use the main
1226 option "timezone" setting for output formatting, and are consistent
1227 between OpenSSL and GnuTLS compilations. Bug 1541.
1228
1229 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1230 encoded parameter in the incoming message. Bug 1558.
1231
1232 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1233 include certificate info, eximon was claiming there were spoolfile
1234 syntax errors.
1235
1236 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
1237
1238 JH/14 Log delivery-related information more consistently, using the sequence
1239 "H=<name> [<ip>]" wherever possible.
1240
1241 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1242 are problematic for Debian distribution, omit them from the release
1243 tarball.
1244
1245 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1246
1247 JH/16 Fix string representation of time values on 64bit time_t architectures.
1248 Bug 1561.
1249
1250 JH/17 Fix a null-indirection in certextract expansions when a nondefault
1251 output list separator was used.
1252
1253
1254 Exim version 4.84
1255 -----------------
1256 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1257 checkers that were complaining about end of non-void function with no
1258 return.
1259
1260 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
1261 This was a regression introduced in 4.83 by another bugfix.
1262
1263 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1264
1265 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
1266 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
1267
1268
1269 Exim version 4.83
1270 -----------------
1271
1272 TF/01 Correctly close the server side of TLS when forking for delivery.
1273
1274 When a message was received over SMTP with TLS, Exim failed to clear up
1275 the incoming connection properly after forking off the child process to
1276 deliver the message. In some situations the subsequent outgoing
1277 delivery connection happened to have the same fd number as the incoming
1278 connection previously had. Exim would try to use TLS and fail, logging
1279 a "Bad file descriptor" error.
1280
1281 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1282 utilities have not been installed.
1283
1284 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1285 temporary space as the ACL may create new global variables.
1286
1287 TL/01 LDAP support uses per connection or global context settings, depending
1288 upon the detected version of the libraries at build time.
1289
1290 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1291 to extract and use the src ip:port in logging and expansions as if it
1292 were a direct connection from the outside internet. PPv2 support was
1293 updated based on HAProxy spec change in May 2014.
1294
1295 JH/02 Add ${listextract {number}{list}{success}{fail}}.
1296
1297 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1298 Properly escape header and check for NULL return.
1299
1300 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1301 not dns_use_dnssec.
1302
1303 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1304
1305 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1306 characters in header names, implemented as a verify condition.
1307 Contributed by Michael Fischer v. Mollard.
1308
1309 TL/05 Rename SPF condition results err_perm and err_temp to standardized
1310 results permerror and temperror. Previous values are deprecated but
1311 still accepted. In a future release, err_perm and err_temp will be
1312 completely removed, which will be a backward incompatibility if the
1313 ACL tests for either of these two old results. Patch contributed by
1314 user bes-internal on the mailing list.
1315
1316 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1317
1318 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1319 selectors, in both main and reject logs.
1320
1321 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1322 failed delivery.
1323
1324 JH/07 Add malware type "sock" for talking to simple daemon.
1325
1326 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
1327
1328 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1329 routers/transports under cutthrough routing.
1330
1331 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1332 numbers. Touch up "bool" conditional to keep the same definition.
1333
1334 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1335
1336 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1337
1338 JH/12 Expand items in router/transport headers_add or headers_remove lists
1339 individually rather than the list as a whole. Bug 1452.
1340
1341 Required for reasonable handling of multiple headers_ options when
1342 they may be empty; requires that headers_remove items with embedded
1343 colons must have them doubled (or the list-separator changed).
1344
1345 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1346 view the policy declared in the DMARC record. Currently, $dmarc_status
1347 is a combined value of both the record presence and the result of the
1348 analysis.
1349
1350 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1351
1352 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
1353 dnslookup router and the smtp transport (applying to the forward
1354 lookup).
1355
1356 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1357 of ldap servers used for a specific lookup. Patch provided by Heiko
1358 Schlichting.
1359
1360 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
1361 New variable $lookup_dnssec_authenticated for observability.
1362
1363 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1364 Patch submitted by Lars Timman.
1365
1366 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1367
1368 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1369 Requires trusted mode and valid format message id, aborts otherwise.
1370 Patch contributed by Heiko Schlichting.
1371
1372 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1373 certextract with support for various fields. Bug 1358.
1374
1375 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1376 is requested by default, modifiable by smtp transport option
1377 hosts_request_ocsp.
1378
1379 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
1380 operate on certificate variables to give certificate fingerprints
1381 Also new ${sha256:cert_variable}.
1382
1383 JH/23 The PRDR feature is moved from being Experimental into the mainline.
1384
1385 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1386 Christian Aistleitner.
1387
1388 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1389
1390 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1391 file. Patch from Wolfgang Breyha.
1392
1393 JH/25 Expand the coverage of the delivery $host and $host_address to
1394 client authenticators run in verify callout. Bug 1476.
1395
1396 JH/26 Port service names are now accepted for tls_on_connect_ports, to
1397 align with daemon_smtp_ports. Bug 72.
1398
1399 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1400 support and error reporting did not work properly.
1401
1402 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1403 and is readable. Patch from Andrew Colin Kissa.
1404
1405 TL/14 Enhance documentation of ${run expansion and how it parses the
1406 commandline after expansion, particularly in the case when an
1407 unquoted variable expansion results in an empty value.
1408
1409 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1410
1411 PP/02 Fix internal collision of T_APL on systems which support RFC3123
1412 by renaming away from it. Addresses GH issue 15, reported by
1413 Jasper Wallace.
1414
1415 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1416
1417 TL/15 SECURITY: prevent double expansion in math comparison functions
1418 (can expand unsanitized data). Not remotely exploitable.
1419 CVE-2014-2972
1420
1421
1422 Exim version 4.82
1423 -----------------
1424
1425 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1426
1427 PP/02 Make -n do something, by making it not do something.
1428 When combined with -bP, the name of an option is not output.
1429
1430 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1431 by GnuTLS.
1432
1433 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1434 $sender_host_name and config options to manage this, and basic check
1435 routines.
1436
1437 PP/05 DSCP support for outbound connections and control modifier for inbound.
1438
1439 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
1440 (Only plugin which currently uses this is kerberos4, which nobody should
1441 be using, but we should make it available and other future plugins might
1442 conceivably use it, even though it would break NAT; stuff *should* be
1443 using channel bindings instead).
1444
1445 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
1446 name; added for Sendmail compatibility; requires admin caller.
1447 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1448 just ignore it); requires trusted caller.
1449 Also parse but ignore: -Ac -Am -X<logfile>
1450 Bugzilla 1117.
1451
1452 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
1453
1454 TL/02 Add +smtp_confirmation as a default logging option.
1455
1456 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1457 Patch by Magnus Holmgren from 2007-02-20.
1458
1459 TL/04 Bugzilla 1281 - Spec typo.
1460 Bugzilla 1283 - Spec typo.
1461 Bugzilla 1290 - Spec grammar fixes.
1462
1463 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
1464
1465 TL/06 Add Experimental DMARC support using libopendmarc libraries.
1466
1467 TL/07 Fix an out of order global option causing a segfault. Reported to dev
1468 mailing list by by Dmitry Isaikin.
1469
1470 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1471
1472 JH/02 Support "G" suffix to numbers in ${if comparisons.
1473
1474 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1475
1476 NM/01 Bugzilla 1197 - Spec typo
1477 Bugzilla 1196 - Spec examples corrections
1478
1479 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
1480
1481 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1482 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1483 function.
1484
1485 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1486 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1487
1488 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1489 "acl {{name}{arg}...}", and optional args on acl condition
1490 "acl = name arg..."
1491
1492 JH/05 Permit multiple router/transport headers_add/remove lines.
1493
1494 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1495
1496 JH/07 Avoid using a waiting database for a single-message-only transport.
1497 Performance patch from Paul Fisher. Bugzilla 1262.
1498
1499 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1500 Bugzilla 884.
1501
1502 JH/09 Add $headers_added variable, with content from use of ACL modifier
1503 add_header (but not yet added to the message). Bugzilla 199.
1504
1505 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1506 Pulled from Bugzilla 817 by Wolfgang Breyha.
1507
1508 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1509 CVE-2012-5671
1510 (nb: this is the same fix as in Exim 4.80.1)
1511
1512 JH/11 Add A= logging on delivery lines, and a client_set_id option on
1513 authenticators.
1514
1515 JH/12 Add optional authenticated_sender logging to A= and a log_selector
1516 for control.
1517
1518 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1519
1520 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1521 advertise SMTP AUTH mechanism to us, instead of a generic
1522 protocol violation error. Also, make Exim more robust to bad
1523 data from the Dovecot auth socket.
1524
1525 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1526
1527 When a queue runner is handling a message, Exim first routes the
1528 recipient addresses, during which it prunes them based on the retry
1529 hints database. After that it attempts to deliver the message to
1530 any remaining recipients. It then updates the hints database using
1531 the retry rules.
1532
1533 So if a recipient address works intermittently, it can get repeatedly
1534 deferred at routing time. The retry hints record remains fresh so the
1535 address never reaches the final cutoff time.
1536
1537 This is a fairly common occurrence when a user is bumping up against
1538 their storage quota. Exim had some logic in its local delivery code
1539 to deal with this. However it did not apply to per-recipient defers
1540 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1541
1542 This change adds a proper retry rule check during routing so that the
1543 final cutoff time is checked against the message's age. We only do
1544 this check if there is an address retry record and there is not a
1545 domain retry record; this implies that previous attempts to handle
1546 the address had the retry_use_local_parts option turned on. We use
1547 this as an approximation for the destination being like a local
1548 delivery, as in LMTP.
1549
1550 I suspect this new check makes the old local delivery cutoff check
1551 redundant, but I have not verified this so I left the code in place.
1552
1553 TF/02 Correct gecos expansion when From: is a prefix of the username.
1554
1555 Test 0254 submits a message to Exim with the header
1556
1557 Resent-From: f
1558
1559 When I ran the test suite under the user fanf2, Exim expanded
1560 the header to contain my full name, whereas it should have added
1561 a Resent-Sender: header. It erroneously treats any prefix of the
1562 username as equal to the username.
1563
1564 This change corrects that bug.
1565
1566 GF/01 DCC debug and logging tidyup
1567 Error conditions log to paniclog rather than rejectlog.
1568 Debug lines prefixed by "DCC: " to remove any ambiguity.
1569
1570 TF/03 Avoid unnecessary rebuilds of lookup-related code.
1571
1572 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1573 Bug spotted by Jeremy Harris; was flawed since initial commit.
1574 Would have resulted in OCSP responses post-SNI triggering an Exim
1575 NULL dereference and crash.
1576
1577 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1578
1579 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1580 Bug detection, analysis and fix by Samuel Thibault.
1581 Bugzilla 1331, Debian bug #698092.
1582
1583 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1584
1585 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1586 Server implementation by Todd Lyons, client by JH.
1587 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1588 config variable "prdr_enable" controls whether the server
1589 advertises the facility. If the client requests PRDR a new
1590 acl_data_smtp_prdr ACL is called once for each recipient, after
1591 the body content is received and before the acl_smtp_data ACL.
1592 The client is controlled by both of: a hosts_try_prdr option
1593 on the smtp transport, and the server advertisement.
1594 Default client logging of deliveries and rejections involving
1595 PRDR are flagged with the string "PRDR".
1596
1597 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1598 fclose(). Diagnosis by Todd Lyons.
1599
1600 PP/17 Update configure.default to handle IPv6 localhost better.
1601 Patch by Alain Williams (plus minor tweaks).
1602 Bugzilla 880.
1603
1604 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1605 This is now consistent with GnuTLS, and is now documented: the
1606 previous undocumented portable approach to treating the option as
1607 unset was to force an expansion failure. That still works, and
1608 an empty string is now equivalent.
1609
1610 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1611 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1612 not performing validation itself.
1613
1614 PP/20 Added force_command boolean option to pipe transport.
1615 Patch from Nick Koston, of cPanel Inc.
1616
1617 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1618 Bugzilla 321, 823.
1619
1620 TF/04 Added udpsend ACL modifier and hexquote expansion operator
1621
1622 PP/21 Fix eximon continuous updating with timestamped log-files.
1623 Broken in a format-string cleanup in 4.80, missed when I repaired the
1624 other false fix of the same issue.
1625 Report and fix from Heiko Schlichting.
1626 Bugzilla 1363.
1627
1628 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1629 Report from Prashanth Katuri.
1630
1631 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1632 It's SecureTransport, so affects any MacOS clients which use the
1633 system-integrated TLS libraries, including email clients.
1634
1635 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1636 using a MIME ACL for non-SMTP local injection.
1637 Report and assistance in diagnosis by Warren Baker.
1638
1639 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1640
1641 JH/16 Fix comparisons for 64b. Bugzilla 1385.
1642
1643 TL/09 Add expansion variable $authenticated_fail_id to keep track of
1644 last id that failed so it may be referenced in subsequent ACL's.
1645
1646 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1647 Alexander Miroch.
1648
1649 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1650 ldap library initialization, allowing self-signed CA's to be
1651 used. Also properly sets require_cert option later in code by
1652 using NULL (global ldap config) instead of ldap handle (per
1653 session). Bug diagnosis and testing by alxgomz.
1654
1655 TL/12 Enhanced documentation in the ratelimit.pl script provided in
1656 the src/util/ subdirectory.
1657
1658 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1659 renamed to Transport Post Delivery Action by Jeremy Harris, as
1660 EXPERIMENTAL_TPDA.
1661
1662 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1663 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1664 redis_servers = needs to be configured which will be used by the redis
1665 lookup. Patch from Warren Baker, of The Packet Hub.
1666
1667 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1668
1669 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1670 hostname or reverse DNS when processing a host list. Used suggestions
1671 from multiple comments on this bug.
1672
1673 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1674
1675 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1676 Missed a few lines, added it to make the runtest require no keyboard
1677 interaction.
1678
1679 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1680 contains upper case chars. Make router use caseful_local_part.
1681
1682 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1683 support when GnuTLS has been built with p11-kit.
1684
1685
1686 Exim version 4.80.1
1687 -------------------
1688
1689 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1690 CVE-2012-5671
1691 This, or similar/improved, will also be change PP/11 of 4.82.
1692
1693
1694 Exim version 4.80
1695 -----------------
1696
1697 PP/01 Handle short writes when writing local log-files.
1698 In practice, only affects FreeBSD (8 onwards).
1699 Bugzilla 1053, with thanks to Dmitry Isaikin.
1700
1701 NM/01 Bugzilla 949 - Documentation tweak
1702
1703 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1704 improved.
1705
1706 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1707
1708 PP/02 Implemented gsasl authenticator.
1709
1710 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1711
1712 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1713 `pkg-config foo` for cflags/libs.
1714
1715 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1716 with rest of GSASL and with heimdal_gssapi.
1717
1718 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1719 `pkg-config foo` for cflags/libs for the TLS implementation.
1720
1721 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
1722 properties get this fed in as external SSF. A number of robustness
1723 and debugging improvements to the cyrus_sasl authenticator.
1724
1725 PP/08 cyrus_sasl server now expands the server_realm option.
1726
1727 PP/09 Bugzilla 1214 - Log authentication information in reject log.
1728 Patch by Jeremy Harris.
1729
1730 PP/10 Added dbmjz lookup type.
1731
1732 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
1733
1734 PP/12 MAIL args handles TAB as well as SP, for better interop with
1735 non-compliant senders.
1736 Analysis and variant patch by Todd Lyons.
1737
1738 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
1739 Bug report from Lars Müller <lars@samba.org> (via SUSE),
1740 Patch from Dirk Mueller <dmueller@suse.com>
1741
1742 PP/13 tls_peerdn now print-escaped for spool files.
1743 Observed some $tls_peerdn in wild which contained \n, which resulted
1744 in spool file corruption.
1745
1746 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1747 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1748 or write after TLS renegotiation, which otherwise led to messages
1749 "Got SSL error 2".
1750
1751 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1752 as a tracking header (ie: a signed header comes before the signature).
1753 Patch from Wolfgang Breyha.
1754
1755 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1756 comma-sep list; embedded commas doubled.
1757
1758 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1759
1760 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1761 diagnostics.
1762 Report and patch from Dmitry Banschikov.
1763
1764 PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
1765 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1766 failures. We appear to now support TLS1.1+ with Exim.
1767
1768 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1769 lets Exim select keys and certificates based upon TLS SNI from client.
1770 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1771 before an outbound SMTP session. New log_selector, +tls_sni.
1772
1773 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1774 NULL dereference. Report and patch from Alun Jones.
1775
1776 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1777 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1778 Not seeing resolver debug output on NetBSD, but suspect this is a
1779 resolver implementation change.
1780
1781 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1782 Left warnings. Added "eximon gdb" invocation mode.
1783
1784 PP/21 Defaulting "accept_8bitmime" to true, not false.
1785
1786 PP/22 Added -bw for inetd wait mode support.
1787
1788 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1789 locate the relevant includes and libraries. Made this the default.
1790
1791 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1792 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1793
1794 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
1795 This may cause build issues on older platforms.
1796
1797 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1798 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1799 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1800 Added SNI support via GnuTLS too.
1801 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
1802
1803 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
1804
1805 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
1806 Applied second patch from Janne, implementing suggestion to default
1807 multiple-strings-in-record handling to match SPF spec.
1808
1809 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
1810
1811 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1812 read-only, out of scope).
1813 Patch from Wolfgang Breyha, report from Stuart Northfield.
1814
1815 PP/29 Fix three issues highlighted by clang analyser static analysis.
1816 Only crash-plausible issue would require the Cambridge-specific
1817 iplookup router and a misconfiguration.
1818 Report from Marcin Mirosław.
1819
1820 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1821
1822 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1823 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1824 As part of this, removing so much warning spew let me fix some minor
1825 real issues in debug logging.
1826
1827 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1828 assignment on my part. Fixed.
1829
1830 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1831 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1832 Janne Snabb (who went above and beyond: thank you).
1833
1834 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1835 string otherwise requires a connection and a bunch more work and it's
1836 relatively easy to get wrong. Should also expose TLS library linkage
1837 problems.
1838
1839 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1840 64-bit ${eval} (JH/03).
1841
1842 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
1843 GNU libc to support some of the 64-bit stuff, should not lead to
1844 conflicts. Defined before os.h is pulled in, so if a given platform
1845 needs to override this, it can.
1846
1847 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1848 protection layer was required, which is not implemented.
1849 Bugzilla 1254, patch from Wolfgang Breyha.
1850
1851 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1852 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1853 tls_dhparam take prime identifiers. Also unbreak combination of
1854 OpenSSL+DH_params+TLSSNI.
1855
1856 PP/39 Disable SSLv2 by default in OpenSSL support.
1857
1858
1859 Exim version 4.77
1860 -----------------
1861
1862 PP/01 Solaris build fix for Oracle's LDAP libraries.
1863 Bugzilla 1109, patch from Stephen Usher.
1864
1865 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1866
1867 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1868 whitespace trailer
1869
1870 TF/02 Fix a couple more cases where we did not log the error message
1871 when unlink() failed. See also change 4.74-TF/03.
1872
1873 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1874 lock up or crash if it happened to be inside a call to libc when it
1875 got a SIGUSR1 from exiwhat.
1876
1877 The SIGUSR1 handler appends the current process status to the process
1878 log which is later printed by exiwhat. It used to use the general
1879 purpose logging code to do this, but several functions it calls are
1880 not safe for signals.
1881
1882 The new output code in the SIGUSR1 handler is specific to the process
1883 log, and simple enough that it's easy to inspect for signal safety.
1884 Removing some special cases also simplifies the general logging code.
1885 Removing the spurious timestamps from the process log simplifies
1886 exiwhat.
1887
1888 TF/04 Improved ratelimit ACL condition.
1889
1890 The /noupdate option has been deprecated in favour of /readonly which
1891 has clearer semantics. The /leaky, /strict, and /readonly update modes
1892 are mutually exclusive. The update mode is no longer included in the
1893 database key; it just determines when the database is updated. (This
1894 means that when you upgrade Exim will forget old rate measurements.)
1895
1896 Exim now checks that the per_* options are used with an update mode that
1897 makes sense for the current ACL. For example, when Exim is processing a
1898 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1899 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1900 must specify per_mail/readonly. If you omit the update mode it defaults to
1901 /leaky where that makes sense (as before) or /readonly where required.
1902
1903 The /noupdate option is now undocumented but still supported for
1904 backwards compatibility. It is equivalent to /readonly except that in
1905 ACLs where /readonly is required you may specify /leaky/noupdate or
1906 /strict/noupdate which are treated the same as /readonly.
1907
1908 A useful new feature is the /count= option. This is a generalization
1909 of the per_byte option, so that you can measure the throughput of other
1910 aggregate values. For example, the per_byte option is now equivalent
1911 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1912
1913 The per_rcpt option has been generalized using the /count= mechanism
1914 (though it's more complicated than the per_byte equivalence). When it is
1915 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1916 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1917 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1918 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1919 Note that using per_rcpt with a non-readonly update mode in more than
1920 one ACL will cause the recipients to be double-counted. (The per_mail
1921 and per_byte options don't have this problem.)
1922
1923 The handling of very low rates has changed slightly. If the computed rate
1924 is less than the event's count (usually one) then this event is the first
1925 after a long gap. In this case the rate is set to the same as this event's
1926 count, so that the first message of a spam run is counted properly.
1927
1928 The major new feature is a mechanism for counting the rate of unique
1929 events. The new per_addr option counts the number of different
1930 recipients that someone has sent messages to in the last time period. It
1931 behaves like per_rcpt if all the recipient addresses are different, but
1932 duplicate recipient addresses do not increase the measured rate. Like
1933 the /count= option this is a general mechanism, so the per_addr option
1934 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1935 example, measure the rate that a client uses different sender addresses
1936 with the options per_mail/unique=$sender_address. There are further
1937 details in the main documentation.
1938
1939 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1940
1941 TF/06 Removed a few PCRE remnants.
1942
1943 TF/07 Automatically extract Exim's version number from tags in the git
1944 repository when doing development or release builds.
1945
1946 PP/02 Raise smtp_cmd_buffer_size to 16kB.
1947 Bugzilla 879. Patch from Paul Fisher.
1948
1949 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1950 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1951 Bugzilla 97.
1952
1953 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
1954
1955 PP/05 Variable $av_failed, true if the AV scanner deferred.
1956 Bugzilla 1078. Patch from John Horne.
1957
1958 PP/06 Stop make process more reliably on build failure.
1959 Bugzilla 1087. Patch from Heiko Schlittermann.
1960
1961 PP/07 Make maildir_use_size_file an _expandable_ boolean.
1962 Bugzilla 1089. Patch from Heiko Schlittermann.
1963
1964 PP/08 Handle ${run} returning more data than OS pipe buffer size.
1965 Bugzilla 1131. Patch from Holger Weiß.
1966
1967 PP/09 Handle IPv6 addresses with SPF.
1968 Bugzilla 860. Patch from Wolfgang Breyha.
1969
1970 PP/10 GnuTLS: support TLS 1.2 & 1.1.
1971 Bugzilla 1156.
1972 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1973 Bugzilla 1095.
1974
1975 PP/11 match_* no longer expand right-hand-side by default.
1976 New compile-time build option, EXPAND_LISTMATCH_RHS.
1977 New expansion conditions, "inlist", "inlisti".
1978
1979 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
1980
1981 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
1982
1983 PP/14 fix log_write() format string regression from TF/03.
1984 Bugzilla 1152. Patch from Dmitry Isaikin.
1985
1986
1987 Exim version 4.76
1988 -----------------
1989
1990 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
1991
1992 PP/02 Harmonised TLS library version reporting; only show if debugging.
1993 Layout now matches that introduced for other libraries in 4.74 PP/03.
1994
1995 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
1996
1997 PP/04 New "dns_use_edns0" global option.
1998
1999 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2000 Bugzilla 1098.
2001
2002 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2003 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
2004
2005 TK/01 Updated PolarSSL code to 0.14.2.
2006 Bugzilla 1097. Patch from Andreas Metzler.
2007
2008 PP/07 Catch divide-by-zero in ${eval:...}.
2009 Fixes bugzilla 1102.
2010
2011 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2012 Bugzilla 1104.
2013
2014 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
2015 format-string attack -- SECURITY: remote arbitrary code execution.
2016
2017 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2018 time unintentionally subject to list matching rules, letting the header
2019 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2020 arbitrary string expansion). This allowed for information disclosure.
2021
2022 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2023 INT_MIN/-1 -- value coerced to INT_MAX.
2024
2025
2026 Exim version 4.75
2027 -----------------
2028
2029 NM/01 Workaround for PCRE version dependency in version reporting
2030 Bugzilla 1073
2031
2032 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2033 This fixes portability to compilers other than gcc, notably
2034 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2035
2036 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2037 makefiles for portability to HP-UX and POSIX correctness.
2038
2039 PP/01 Permit LOOKUP_foo enabling on the make command-line.
2040 Also via indented variable definition in the Makefile.
2041 (Debugging by Oliver Heesakkers).
2042
2043 PP/02 Restore caching of spamd results with expanded spamd_address.
2044 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2045
2046 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2047 Improves build reliability. Fix from: Frank Elsner
2048
2049 NM/02 Fix wide character breakage in the rfc2047 coding
2050 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2051
2052 NM/03 Allow underscore in dnslist lookups
2053 Fixes bug 1026. Patch from Graeme Fowler
2054
2055 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2056 Code patches from Adam Ciarcinski of NetBSD.
2057
2058 NM/04 Fixed exiqgrep to cope with mailq missing size issue
2059 Fixes bug 943.
2060
2061 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2062 is logged, to avoid truncation. Patch from John Horne.
2063
2064 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2065 Patch from Jakob Hirsch.
2066
2067 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2068 SQL string expansion failure details.
2069 Patch from Andrey Oktyabrski.
2070
2071 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2072 Patch from Simon Arlott.
2073
2074 PP/09 New lookups functionality failed to compile on old gcc which rejects
2075 extern declarations in function scope.
2076 Patch from Oliver Fleischmann
2077
2078 PP/10 Use sig_atomic_t for flags set from signal handlers.
2079 Check getgroups() return and improve debugging.
2080 Fixed developed for diagnosis in bug 927 (which turned out to be
2081 a kernel bug).
2082
2083 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2084 Patch from Mark Zealey.
2085
2086 PP/12 Bugzilla 1056: Improved spamd server selection.
2087 Patch from Mark Zealey.
2088
2089 PP/13 Bugzilla 1086: Deal with maildir quota file races.
2090 Based on patch from Heiko Schlittermann.
2091
2092 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2093 Patch from Uwe Doering, sign-off by Michael Haardt.
2094
2095 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2096 variable declaration deep within a block. Bug and patch from
2097 Dennis Davis.
2098
2099 PP/15 lookups-Makefile IRIX compatibility coercion.
2100
2101 PP/16 Make DISABLE_DKIM build knob functional.
2102
2103 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2104 Patch by Simon Arlott
2105
2106 TF/03 Fix valgrind.h portability to C89 compilers that do not support
2107 variable argument macros. Our copy now differs from upstream.
2108
2109
2110 Exim version 4.74
2111 -----------------
2112
2113 TF/01 Failure to get a lock on a hints database can have serious
2114 consequences so log it to the panic log.
2115
2116 TF/02 Log LMTP confirmation messages in the same way as SMTP,
2117 controlled using the smtp_confirmation log selector.
2118
2119 TF/03 Include the error message when we fail to unlink a spool file.
2120
2121 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2122 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2123 for maintaining out-of-tree patches for some time.
2124
2125 PP/01 Bugzilla 139: Documentation and portability issues.
2126 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2127 Handle per-OS dynamic-module compilation flags.
2128
2129 PP/02 Let /dev/null have normal permissions.
2130 The 4.73 fixes were a little too stringent and complained about the
2131 permissions on /dev/null. Exempt it from some checks.
2132 Reported by Andreas M. Kirchwitz.
2133
2134 PP/03 Report version information for many libraries, including
2135 Exim version information for dynamically loaded libraries. Created
2136 version.h, now support a version extension string for distributors
2137 who patch heavily. Dynamic module ABI change.
2138
2139 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2140 privilege escalation vulnerability whereby the Exim run-time user
2141 can cause root to append content of the attacker's choosing to
2142 arbitrary files.
2143
2144 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2145 (Wolfgang Breyha)
2146
2147 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2148 If dropping privileges for untrusted macros, we disabled normal logging
2149 on the basis that it would fail; for the Exim run-time user, this is not
2150 the case, and it resulted in successful deliveries going unlogged.
2151 Fixed. Reported by Andreas Metzler.
2152
2153
2154 Exim version 4.73
2155 -----------------
2156
2157 PP/01 Date: & Message-Id: revert to normally being appended to a message,
2158 only prepend for the Resent-* case. Fixes regression introduced in
2159 Exim 4.70 by NM/22 for Bugzilla 607.
2160
2161 PP/02 Include check_rfc2047_length in configure.default because we're seeing
2162 increasing numbers of administrators be bitten by this.
2163
2164 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2165
2166 PP/03 Bugzilla 994: added openssl_options main configuration option.
2167
2168 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2169
2170 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
2171
2172 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2173
2174 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
2175 without a peer certificate, leading to a segfault because of an
2176 assumption that peers always have certificates. Be a little more
2177 paranoid. Problem reported by Martin Tscholak.
2178
2179 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2180 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2181 NB: ClamAV planning to remove STREAM in "middle of 2010".
2182 CL also introduces -bmalware, various -d+acl logging additions and
2183 more caution in buffer sizes.
2184
2185 PP/09 Implemented reverse_ip expansion operator.
2186
2187 PP/10 Bugzilla 937: provide a "debug" ACL control.
2188
2189 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2190
2191 PP/12 Bugzilla 973: Implement --version.
2192
2193 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2194
2195 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2196
2197 PP/15 Bugzilla 816: support multiple condition rules on Routers.
2198
2199 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
2200 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2201 ignore trailing whitespace.
2202
2203 JJ/02 prevent non-panic DKIM error from being sent to paniclog
2204
2205 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2206 "exim" to be used
2207
2208 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2209 Notification from Dr Andrew Aitchison.
2210
2211 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2212 ExtendedDetectionInfo response format.
2213 Notification from John Horne.
2214
2215 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2216 compatible.
2217
2218 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2219 XSL and documented dependency on system catalogs, with examples of how
2220 it normally works.
2221
2222 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2223 access.
2224
2225 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2226 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2227 configuration file which is writeable by the Exim user or group.
2228
2229 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2230 of configuration files to cover files specified with the -C option if
2231 they are going to be used with root privileges, not just the default
2232 configuration file.
2233
2234 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2235 option (effectively making it always true).
2236
2237 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2238 files to be used while preserving root privileges.
2239
2240 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2241 that rogue child processes cannot use them.
2242
2243 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2244 run-time user, instead of root.
2245
2246 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2247 Exim run-time user without dropping privileges.
2248
2249 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2250 result string, instead of calling string_vformat() twice with the same
2251 arguments.
2252
2253 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2254 for other users. Others should always drop root privileges if they use
2255 -C on the command line, even for a whitelisted configure file.
2256
2257 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2258
2259 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2260
2261
2262 Exim version 4.72
2263 -----------------
2264
2265 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2266 $data_path, and $header_path variables; fixed documentation bugs and
2267 typos
2268
2269 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2270 exipick to access non-standard spools, including the "frozen" queue
2271 (Finput)
2272
2273 NM/01 Bugzilla 965: Support mysql stored procedures.
2274 Patch from Alain Williams
2275
2276 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2277
2278 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2279 Patch from Andreas Metzler
2280
2281 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2282 Patch from Kirill Miazine
2283
2284 NM/05 Bugzilla 671: Added umask to procmail example.
2285
2286 JJ/03 installed exipick 20100323.0, fixing doc bug
2287
2288 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
2289 directory. Notification and patch from Dan Rosenberg.
2290
2291 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2292
2293 TK/02 Improve log output when DKIM signing operation fails.
2294
2295 MH/01 Treat the transport option dkim_domain as a colon separated
2296 list, not as a single string, and sign the message with each element,
2297 omitting multiple occurences of the same signer.
2298
2299 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2300 Bugzilla 985, 986. Patch by Simon Arlott
2301
2302 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
2303 Patch by Simon Arlott
2304
2305 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
2306 MBX locking. Notification from Dan Rosenberg.
2307
2308
2309 Exim version 4.71
2310 -----------------
2311
2312 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
2313
2314 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2315
2316 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2317
2318 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2319
2320 NM/04 Bugzilla 915: Flag broken perl installation during build.
2321
2322
2323 Exim version 4.70
2324 -----------------
2325
2326 TK/01 Added patch by Johannes Berg that expands the main option
2327 "spamd_address" if it starts with a dollar sign.
2328
2329 TK/02 Write list of recipients to X-Envelope-Sender header when building
2330 the mbox-format spool file for content scanning (suggested by Jakob
2331 Hirsch).
2332
2333 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2334 (http://www.dcc-servers.net/) support via dccifd. Activated by
2335 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
2336
2337 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2338 by Mark Daniel Reidel <mr@df.eu>.
2339
2340 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2341 When building exim an external PCRE library is now needed -
2342 PCRE is a system library on the majority of modern systems.
2343 See entry on PCRE_LIBS in EDITME file.
2344
2345 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2346 conversation. Added nologin parameter to request.
2347 Patch contributed by Kirill Miazine.
2348
2349 TF/01 Do not log submission mode rewrites if they do not change the address.
2350
2351 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2352
2353 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
2354 log files in place. Contributed by Roberto Lima.
2355
2356 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
2357
2358 TF/03 Bugzilla 615: When checking the local_parts router precondition
2359 after a local_part_suffix or local_part_prefix option, Exim now
2360 does not use the address's named list lookup cache, since this
2361 contains cached lookups for the whole local part.
2362
2363 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
2364 Robert Millan. Documentation is in experimental-spec.txt.
2365
2366 TF/04 Bugzilla 668: Fix parallel build (make -j).
2367
2368 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
2369
2370 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
2371 Patch provided by Jan Srzednicki.
2372
2373 TF/05 Leading white space used to be stripped from $spam_report which
2374 wrecked the formatting. Now it is preserved.
2375
2376 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2377 that they are available at delivery time.
2378
2379 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2380
2381 TF/08 TLS error reporting now respects the incoming_interface and
2382 incoming_port log selectors.
2383
2384 TF/09 Produce a more useful error message if an SMTP transport's hosts
2385 setting expands to an empty string.
2386
2387 NM/06 Bugzilla 744: EXPN did not work under TLS.
2388 Patch provided by Phil Pennock.
2389
2390 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
2391 Patch provided by Richard Godbee.
2392
2393 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
2394 acl_smtp_notquit, added index entry.
2395
2396 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2397 Patch provided by Eugene Bujak.
2398
2399 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2400 accept(). Patch provided by Maxim Dounin.
2401
2402 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
2403 Patch provided by Phil Pennock.
2404
2405 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2406
2407 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
2408 Patch provided by Brad "anomie" Jorsch.
2409
2410 NM/14 Bugzilla 622: Added timeout setting to transport filter.
2411 Patch provided by Dean Brooks.
2412
2413 TK/05 Add native DKIM support (does not depend on external libraries).
2414
2415 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
2416 Patch provided by Graeme Fowler.
2417
2418 NM/16 Bugzilla 851: Documentation example syntax fix.
2419
2420 NM/17 Changed NOTICE file to remove references to embedded PCRE.
2421
2422 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2423 lsearch.
2424
2425 NM/19 Bugzilla 745: TLS version reporting.
2426 Patch provided by Phil Pennock.
2427
2428 NM/20 Bugzilla 167: bool: condition support.
2429 Patch provided by Phil Pennock.
2430
2431 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2432 clients. Patch provided by Phil Pennock.
2433
2434 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2435 Patch provided by Brad "anomie" Jorsch.
2436
2437 NM/23 Bugzilla 687: Fix misparses in eximstats.
2438 Patch provided by Heiko Schlittermann.
2439
2440 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2441 Patch provided by Heiko Schlittermann.
2442
2443 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
2444 plus update to original patch.
2445
2446 NM/26 Bugzilla 799: Documentation correction for ratelimit.
2447
2448 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2449 Patch provided by David Brownlee.
2450
2451 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
2452
2453 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
2454
2455 NM/30 Bugzilla 888: TLS documentation bugfixes.
2456
2457 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
2458
2459 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
2460 Unlike the original bugzilla I have changed all shell scripts in src tree.
2461
2462 NM/33 Bugzilla 898: Transport filter timeout fix.
2463 Patch by Todd Rinaldo.
2464
2465 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
2466 Patch by Serge Demonchaux.
2467
2468 NM/35 Bugzilla 39: Base64 decode bug fixes.
2469 Patch by Jakob Hirsch.
2470
2471 NM/36 Bugzilla 909: Correct connect() call in dcc code.
2472
2473 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
2474
2475 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
2476
2477 NM/39 Bugzilla 911: Fixed MakeLinks build script.
2478
2479
2480 Exim version 4.69
2481 -----------------
2482
2483 TK/01 Add preliminary DKIM support. Currently requires a forked version of
2484 ALT-N's libdkim that I have put here:
2485 http://duncanthrax.net/exim-experimental/
2486
2487 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2488 were called 'true' and it seems that C99 defines that as a reserved
2489 keyword to be used with 'bool' variable types. That means you could
2490 not include C99-style headers which use bools without triggering
2491 build errors in sieve.c.
2492
2493 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2494 as mailq or other aliases. Changed the --help handling significantly
2495 to do whats expected. exim_usage() emits usage/help information.
2496
2497 SC/01 Added the -bylocaldomain option to eximstats.
2498
2499 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
2500
2501 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
2502
2503 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
2504
2505
2506 Exim version 4.68
2507 -----------------
2508
2509 PH/01 Another patch from the Sieve maintainer.
2510
2511 PH/02 When an IPv6 address is converted to a string for single-key lookup
2512 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2513 dots are used instead of colons so that keys in lsearch files need not
2514 contain colons. This was done some time before quoting was made available
2515 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2516 (notated using the quote facility) so as to distinguish them from IPv4
2517 keys. This meant that lookups for IP addresses in host lists did not work
2518 for iplsearch lookups.
2519
2520 This has been fixed by arranging for IPv6 addresses to be expressed with
2521 colons if the lookup type is iplsearch. This is not incompatible, because
2522 previously such lookups could never work.
2523
2524 The situation is now rather anomalous, since one *can* have colons in
2525 ordinary lsearch keys. However, making the change in all cases is
2526 incompatible and would probably break a number of configurations.
2527
2528 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2529 version.
2530
2531 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2532 conversion specification without a maximum field width, thereby enabling
2533 a rogue spamd server to cause a buffer overflow. While nobody in their
2534 right mind would setup Exim to query an untrusted spamd server, an
2535 attacker that gains access to a server running spamd could potentially
2536 exploit this vulnerability to run arbitrary code as the Exim user.
2537
2538 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2539 $primary_hostname instead of what libspf2 thinks the hosts name is.
2540
2541 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2542 a directory entry by the name of the lookup key. Previously, if a
2543 symlink pointed to a non-existing file or a file in a directory that
2544 Exim lacked permissions to read, a lookup for a key matching that
2545 symlink would fail. Now it is enough that a matching directory entry
2546 exists, symlink or not. (Bugzilla 503.)
2547
2548 PH/03 The body_linecount and body_zerocount variables are now exported in the
2549 local_scan API.
2550
2551 PH/04 Added the $dnslist_matched variable.
2552
2553 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2554 This means they are set thereafter only if the connection becomes
2555 encrypted.
2556
2557 PH/06 Added the client_condition to authenticators so that some can be skipped
2558 by clients under certain conditions.
2559
2560 PH/07 The error message for a badly-placed control=no_multiline_responses left
2561 "_responses" off the end of the name.
2562
2563 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2564
2565 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2566 (without spaces) instead of just copying the configuration text.
2567
2568 PH/10 Added the /noupdate option to the ratelimit ACL condition.
2569
2570 PH/11 Added $max_received_linelength.
2571
2572 PH/12 Added +ignore_defer and +include_defer to host lists.
2573
2574 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2575 way in which PCRE > 7.0 is built.
2576
2577 PH/14 Implemented queue_only_load_latch.
2578
2579 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2580 MAIL command. The effect was to mangle the value on 64-bit systems.
2581
2582 PH/16 Another patch from the Sieve maintainer.
2583
2584 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2585
2586 PH/18 If a system quota error occurred while trying to create the file for
2587 a maildir delivery, the message "Mailbox is full" was not appended to the
2588 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2589 only to a quota excession during the actual writing of the file.
2590
2591 PH/19 It seems that peer DN values may contain newlines (and other non-printing
2592 characters?) which causes problems in log lines. The DN values are now
2593 passed through string_printing() before being added to log lines.
2594
2595 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
2596 and InterBase are left for another time.)
2597
2598 PH/21 Added message_body_newlines option.
2599
2600 PH/22 Guard against possible overflow in moan_check_errorcopy().
2601
2602 PH/23 POSIX allows open() to be a macro; guard against that.
2603
2604 PH/24 If the recipient of an error message contained an @ in the local part
2605 (suitably quoted, of course), incorrect values were put in $domain and
2606 $local_part during the evaluation of errors_copy.
2607
2608
2609 Exim version 4.67
2610 -----------------
2611
2612 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2613 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2614 Jan Srzednicki.
2615
2616 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2617 issue a MAIL command.
2618
2619 PH/02 In an ACL statement such as
2620
2621 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2622
2623 if a client was not listed at all, or was listed with a value other than
2624 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2625 the condition was not true (as it should be), so access was not denied.
2626 The bug was that the ! inversion was incorrectly passed on to the second
2627 item. This has been fixed.
2628
2629 PH/03 Added additional dnslists conditions == and =& which are different from
2630 = and & when the dns lookup returns more than one IP address.
2631
2632 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2633 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2634
2635 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2636 FSYNC, which compiles an option called disable_fsync that allows for
2637 bypassing fsync(). The documentation is heavily laced with warnings.
2638
2639 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2640
2641 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2642 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2643 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2644 including adding "make clean"; (3) Added -fPIC when compiling the test
2645 dynamically loaded module, to get rid of a warning.
2646
2647 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2648 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2649 = 0s. The bug is otherwise harmless.
2650
2651 PH/07 There was a bug in the dovecot authenticator such that the value of
2652 $auth1 could be overwritten, and so not correctly preserved, after a
2653 successful authentication. This usually meant that the value preserved by
2654 the server_setid option was incorrect.
2655
2656 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2657
2658 PH/09 Installed PCRE release 7.0.
2659
2660 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2661 run for batched SMTP input. It is now run at the start of every message
2662 in the batch. While fixing this I discovered that the process information
2663 (output by running exiwhat) was not always getting set for -bs and -bS
2664 input. This is fixed, and it now also says "batched" for BSMTP.
2665
2666 PH/11 Added control=no_pipelining.
2667
2668 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2669 patch, slightly modified), and move the expansion of helo_data till after
2670 the connection is made in the smtp transport (so it can use these
2671 values).
2672
2673 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2674
2675 PH/14 Added log_selector = +pid.
2676
2677 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2678
2679 PH/16 Add ${if forany and ${if forall.
2680
2681 PH/17 Added dsn_from option to vary the From: line in DSNs.
2682
2683 PH/18 Flush SMTP output before performing a callout, unless control =
2684 no_callout_flush is set.
2685
2686 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2687 was true (the default) a successful delivery failed to delete the retry
2688 item, thus causing premature timeout of the address. The bug is now
2689 fixed.
2690
2691 PH/20 Added hosts_avoid_pipelining to the smtp transport.
2692
2693 PH/21 Long custom messages for fakedefer and fakereject are now split up
2694 into multiline responses in the same way that messages for "deny" and
2695 other ACL rejections are.
2696
2697 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2698 with slight modification.
2699
2700 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2701 draft, changing the syntax and factoring some duplicate code".
2702
2703 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2704 for deliveries of the second and subsequent messages over the same SMTP
2705 connection.
2706
2707 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2708 ${reduce, with only minor "tidies".
2709
2710 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2711
2712 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2713 expansion side effects.
2714
2715 PH/27 When a message times out after an over-quota error from an Exim-imposed
2716 quota, the bounce message says "mailbox is full". This message was not
2717 being given when it was a system quota that was exceeded. It now should
2718 be the same.
2719
2720 MH/03 Made $recipients available in local_scan(). local_scan() already has
2721 better access to the recipient list through recipients_list[], but
2722 $recipients can be useful in postmaster-provided expansion strings.
2723
2724 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2725 in the case of a MAIL command with additional options following the
2726 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2727 were accidentally chopped off.
2728
2729 PH/29 SMTP synchronization checks are implemented when a command is read -
2730 there is a check that no more input is waiting when there shouldn't be
2731 any. However, for some commands, a delay in an ACL can mean that it is
2732 some time before the response is written. In this time, more input might
2733 arrive, invalidly. So now there are extra checks after an ACL has run for
2734 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2735 pipelining has not been advertised.
2736
2737 PH/30 MH's patch to allow iscntrl() characters to be list separators.
2738
2739 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2740 returned in the SMTP response when smtp_return_error_details was false.
2741 This has been fixed.
2742
2743 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2744 instead of the C I/O that was originally supplied, because problems were
2745 reported on Solaris.
2746
2747 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2748 Exim which did not show up earlier: it was assuming that a call to
2749 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2750 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2751 was a macro that became an assignment, so it seemed to work. This has
2752 changed to a proper function call with a void return, hence the compile
2753 error. Exim's code has been fixed.
2754
2755 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2756 cpus.
2757
2758 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2759
2760 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2761
2762 PH/37 If a message is not accepted after it has had an id assigned (e.g.
2763 because it turns out to be too big or there is a timeout) there is no
2764 "Completed" line in the log. When some messages of this type were
2765 selected by exigrep, they were listed as "not completed". Others were
2766 picked up by some special patterns. I have improved the selection
2767 criteria to be more general.
2768
2769 PH/38 The host_find_failed option in the manualroute router can now be set
2770 to "ignore", to completely ignore a host whose IP address cannot be
2771 found. If all hosts are ignored, the behaviour is controlled by the new
2772 host_all_ignored option.
2773
2774 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2775 homing or because of multiple MX records with /mx) generated more than
2776 one IP address, and the following item turned out to be the local host,
2777 all the secondary addresses of the first item were incorrectly removed
2778 from the list, along with the local host and any following hosts (which
2779 is what is supposed to happen).
2780
2781 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2782 whoever called Exim into the -H file. In the case of the daemon it was
2783 behaving confusingly. When first started, it used values for whoever
2784 started the daemon, but after a SIGHUP it used the Exim user (because it
2785 calls itself on a restart). I have changed the code so that it now always
2786 uses the Exim user.
2787
2788 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2789 message are rejected with the same error (e.g. no authentication or bad
2790 sender address), and a DATA command is nevertheless sent (as can happen
2791 with PIPELINING or a stupid MUA), the error message that was given to the
2792 RCPT commands is included in the rejection of the DATA command. This is
2793 intended to be helpful for MUAs that show only the final error to their
2794 users.
2795
2796 PH/42 Another patch from the Sieve maintainer.
2797
2798 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2799 Eximstats - Fixed some broken HTML links and added missing column headers
2800 (Jez Hancock).
2801 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2802 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2803
2804 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2805
2806 PH/43 Yet another patch from the Sieve maintainer.
2807
2808 PH/44 I found a way to check for a TCP/IP connection going away before sending
2809 the response to the final '.' that terminates a message, but only in the
2810 case where the client has not sent further data following the '.'
2811 (unfortunately, this is allowed). However, in many cases there won't be
2812 any further data because there won't be any more messages to send. A call
2813 to select() can be used: if it shows that the input is "ready", there is
2814 either input waiting, or the socket has been closed. An attempt to read
2815 the next input character can distinguish the two cases. Previously, Exim
2816 would have sent an OK response which the client would never have see.
2817 This could lead to message repetition. This fix should cure that, at
2818 least in a lot of common cases.
2819
2820 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2821 advertised in response to EHLO.
2822
2823
2824 Exim version 4.66
2825 -----------------
2826
2827 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2828 fixed by 4.65/MH/01 (is this a record?) are fixed:
2829
2830 (i) An empty string was always treated as zero by the numeric comparison
2831 operators. This behaviour has been restored.
2832
2833 (ii) It is documented that the numeric comparison operators always treat
2834 their arguments as decimal numbers. This was broken in that numbers
2835 starting with 0 were being interpreted as octal.
2836
2837 While fixing these problems I realized that there was another issue that
2838 hadn't been noticed. Values of message_size_limit (both the global option
2839 and the transport option) were treated as octal if they started with 0.
2840 The documentation was vague. These values are now always treated as
2841 decimal, and I will make that clear in the documentation.
2842
2843
2844 Exim version 4.65
2845 -----------------
2846
2847 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2848 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2849 versions. (#438)
2850
2851 MH/01 Don't check that the operands of numeric comparison operators are
2852 integers when their expansion is in "skipping" mode (fixes bug
2853 introduced by 4.64-PH/07).
2854
2855 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2856 child addresses, Exim now panics and dies. Previously, because the count
2857 is held in a short int, deliveries were likely to be lost. As such a
2858 large number of recipients for a single message is ridiculous
2859 (performance will be very, very poor), I have chosen to impose a limit
2860 rather than extend the field.
2861
2862
2863 Exim version 4.64
2864 -----------------
2865
2866 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2867 leftover -K file (the existence of which was triggered by #402).
2868 While we were at it, introduced process PID as part of the -K
2869 filename. This should rule out race conditions when creating
2870 these files.
2871
2872 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2873 processing considerably. Previous code took too long for large mails,
2874 triggering a timeout which in turn triggers #401.
2875
2876 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2877 in the DK code in transports.c. sendfile() is not really portable,
2878 hence the _LINUX specificness.
2879
2880 TF/01 In the add_headers option to the mail command in an Exim filter,
2881 there was a bug that Exim would claim a syntax error in any
2882 header after the first one which had an odd number of characters
2883 in the field name.
2884
2885 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2886 callout verification, Exim cached a "reject" for the entire domain. This
2887 is correct for most verifications, but it is not correct for a recipient
2888 verification with use_sender or use_postmaster set, because in that case
2889 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2890 case of MAIL FROM:<> rejection from other early rejections (e.g.
2891 rejection of HELO). When verifying a recipient using a non-null MAIL
2892 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2893 Whatever the result of the callout, the value of the domain cache is
2894 left unchanged (for any other kind of callout, getting as far as trying
2895 RCPT means that the domain itself is ok).
2896
2897 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2898 gcc 4.1.1 threw up.
2899
2900 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2901 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2902 session, the daemon ignores ECONNECT errors and logs others; it now
2903 ignores EPIPE as well.
2904
2905 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2906 (quoted-printable decoding).
2907
2908 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
2909 later the small subsequent patch to fix an introduced bug.
2910
2911 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2912
2913 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2914
2915 PH/08 An error is now given if message_size_limit is specified negative.
2916
2917 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
2918 to be given (somewhat) arbitrary names.
2919
2920 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2921 in 4.64-PH/09.
2922
2923 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2924 miscellaneous code fixes
2925
2926 PH/10 Added the log_reject_target ACL modifier to specify where to log
2927 rejections.
2928
2929 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2930 hostname. This is wrong, because it relates to the incoming message (and
2931 probably the interface on which it is arriving) and not to the outgoing
2932 callout (which could be using a different interface). This has been
2933 changed to use the value of the helo_data option from the smtp transport
2934 instead - this is what is used when a message is actually being sent. If
2935 there is no remote transport (possible with a router that sets up host
2936 addresses), $smtp_active_hostname is used.
2937
2938 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
2939 tweaks were necessary in order to get it to work (see also 21 below):
2940 (a) The code assumed that strncpy() returns a negative number on buffer
2941 overflow, which isn't the case. Replaced with Exim's string_format()
2942 function.
2943 (b) There were several signed/unsigned issues. I just did the minimum
2944 hacking in of casts. There is scope for a larger refactoring.
2945 (c) The code used strcasecmp() which is not a standard C function.
2946 Replaced with Exim's strcmpic() function.
2947 (d) The code set only $1; it now sets $auth1 as well.
2948 (e) A simple test gave the error "authentication client didn't specify
2949 service in request". It would seem that Dovecot has changed its
2950 interface. Fortunately there's a specification; I followed it and
2951 changed what the client sends and it appears to be working now.
2952
2953 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
2954 decoding.
2955
2956 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
2957 address A is aliased to B and C, where B exists and C does not. Without
2958 -v the output is "A verified" because verification stops after a
2959 successful redirection if more than one address is generated. However,
2960 with -v the child addresses are also verified. Exim was outputting "A
2961 failed to verify" and then showing the successful verification for C,
2962 with its parentage. It now outputs "B failed to verify", showing B's
2963 parentage before showing the successful verification of C.
2964
2965 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
2966 look up a TXT record in a specific list after matching in a combined
2967 list.
2968
2969 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2970 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2971 they consult the DNS. I had assumed they would set it the way they
2972 wanted; and indeed my experiments on Linux seem to show that in some
2973 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2974 To be on the safe side, however, I have now made the interface to
2975 host_find_byname() similar to host_find_bydns(), with an argument
2976 containing the DNS resolver options. The host_find_byname() function now
2977 sets these options at its start, just as host_find_bydns() does. The smtp
2978 transport options dns_qualify_single and dns_search_parents are passed to
2979 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
2980 of host_find_byname() use the default settings of RES_DEFNAMES
2981 (qualify_single) but not RES_DNSRCH (search_parents).
2982
2983 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
2984 spool_read_header() do less string testing, by means of a preliminary
2985 switch on the second character of optional "-foo" lines. (This is
2986 overdue, caused by the large number of possibilities that now exist.
2987 Originally there were few.) While I was there, I also converted the
2988 str(n)cmp tests so they don't re-test the leading "-" and the first
2989 character, in the hope this might squeeze out yet more improvement.
2990
2991 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
2992 flag allowing group syntax was set by the header_syntax check but not
2993 turned off, possible causing trouble later; (2) The flag was not being
2994 set at all for the header_verify test, causing "group"-style headers to
2995 be rejected. I have now set it in this case, and also caused header_
2996 verify to ignore an empty address taken from a group. While doing this, I
2997 came across some other cases where the code for allowing group syntax
2998 while scanning a header line wasn't quite right (mostly, not resetting
2999 the flag correctly in the right place). These bugs could have caused
3000 trouble for malformed header lines. I hope it is now all correct.
3001
3002 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
3003 with the "reply" argument non-NULL. The code, however (which originally
3004 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
3005 but it didn't always do it. This confused somebody who was copying the
3006 code for some other use. I have removed all the tests.
3007
3008 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
3009 feature that was used to support insecure browsers during the U.S. crypto
3010 embargo. It requires special client support, and Exim is probably the
3011 only MTA that supported it -- and would never use it because real RSA is
3012 always available. This code has been removed, because it had the bad
3013 effect of slowing Exim down by computing (never used) parameters for the
3014 RSA_EXPORT functionality.
3015
3016 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
3017 authenticator to fail if there's a tab character in the incoming data
3018 (there should never be unless someone is messing about, as it's supposed
3019 to be base64-encoded). Also added, on Timo's advice, the "secured" option
3020 if the connection is using TLS or if the remote IP is the same as the
3021 local IP, and the "valid-client-cert option" if a client certificate has
3022 been verified.
3023
3024 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
3025 authenticators. This can be used for authorization after authentication
3026 succeeds. (In the case of plaintext, it servers for both authentication
3027 and authorization.)
3028
3029 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
3030 if any retry times were supplied.
3031
3032 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
3033 connection, where there is no client IP address to check. In this
3034 situation, the verify now always succeeds.
3035
3036 PH/25 Applied John Jetmore's -Mset patch.
3037
3038 PH/26 Added -bem to be like -Mset, but loading a message from a file.
3039
3040 PH/27 In a string expansion for a processed (not raw) header when multiple
3041 headers of the same name were present, leading whitespace was being
3042 removed from all of them, but trailing whitespace was being removed only
3043 from the last one. Now trailing whitespace is removed from each header
3044 before concatenation. Completely empty headers in a concatenation (as
3045 before) are ignored.
3046
3047 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
3048 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
3049
3050 PH/29 [Removed. This was a change that I later backed out, and forgot to
3051 correct the ChangeLog entry (that I had efficiently created) before
3052 committing the later change.]
3053
3054 PH/30 Exim was sometimes attempting to deliver messages that had suffered
3055 address errors (4xx response to RCPT) over the same connection as other
3056 messages routed to the same hosts. Such deliveries are always "forced",
3057 so retry times are not inspected. This resulted in far too many retries
3058 for the affected addresses. The effect occurred only when there were more
3059 hosts than the hosts_max_try setting in the smtp transport when it had
3060 the 4xx errors. Those hosts that it had tried were not added to the list
3061 of hosts for which the message was waiting, so if all were tried, there
3062 was no problem. Two fixes have been applied:
3063
3064 (i) If there are any address or message errors in an SMTP delivery, none
3065 of the hosts (tried or untried) are now added to the list of hosts
3066 for which the message is waiting, so the message should not be a
3067 candidate for sending over the same connection that was used for a
3068 successful delivery of some other message. This seems entirely
3069 reasonable: after all the message is NOT "waiting for some host".
3070 This is so "obvious" that I'm not sure why it wasn't done
3071 previously. Hope I haven't missed anything, but it can't do any
3072 harm, as the worst effect is to miss an optimization.
3073
3074 (ii) If, despite (i), such a delivery is accidentally attempted, the
3075 routing retry time is respected, so at least it doesn't keep
3076 hammering the server.
3077
3078 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
3079 in ${readsocket because some servers need this prod.
3080
3081 PH/32 Added some extra debug output when updating a wait-xxx database.
3082
3083 PH/33 The hint "could be header name not terminated by colon", which has been
3084 given for certain expansion errors for a long time, was not being given
3085 for the ${if def:h_colon_omitted{... case.
3086
3087 PH/34 The spec says: "With one important exception, whenever a domain list is
3088 being scanned, $domain contains the subject domain." There was at least
3089 one case where this was not true.
3090
3091 PH/35 The error "getsockname() failed: connection reset by peer" was being
3092 written to the panic log as well as the main log, but it isn't really
3093 panic-worthy as it just means the connection died rather early on. I have
3094 removed the panic log writing for the ECONNRESET error when getsockname()
3095 fails.
3096
3097 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
3098 runs only) independently of the message's sender address. This meant
3099 that, if the 4xx error was in fact related to the sender, a different
3100 message to the same recipient with a different sender could confuse
3101 things. In particular, this can happen when sending to a greylisting
3102 server, but other circumstances could also provoke similar problems.
3103 I have changed the default so that the retry time for these errors is now
3104 based a combination of the sender and recipient addresses. This change
3105 can be overridden by setting address_retry_include_sender=false in the
3106 smtp transport.
3107
3108 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
3109 remote server are returned as part of bounce messages. This was not
3110 happening for LMTP over a pipe (the lmtp transport), but now it is the
3111 same for both kinds of LMTP.
3112
3113 PH/38 Despite being documented as not happening, Exim was rewriting addresses
3114 in header lines that were in fact CNAMEs. This is no longer the case.
3115
3116 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
3117 and queue runs started by the daemon processed all messages. This has
3118 been fixed so that -R and -S can now usefully be given with -q<time>.
3119
3120 PH/40 Import PCRE release 6.7 (fixes some bugs).
3121
3122 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
3123
3124 PH/42 Give an error if -q is specified more than once.
3125
3126 PH/43 Renamed the variables $interface_address and $interface_port as
3127 $received_ip_address and $received_port, to make it clear that these
3128 values apply to message reception, and not to the outgoing interface when
3129 a message is delivered. (The old names remain recognized, of course.)
3130
3131 PH/44 There was no timeout on the connect() call when using a Unix domain
3132 socket in the ${readsocket expansion. There now is.
3133
3134 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
3135 be meaningful with "accept".
3136
3137 SC/01 Eximstats V1.43
3138 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
3139
3140 SC/02 Eximstats V1.44
3141 Use a glob alias rather than an array ref in the generated
3142 parser. This improves both readability and performance.
3143
3144 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
3145 Collect SpamAssassin and rejection statistics.
3146 Don't display local sender or destination tables unless
3147 there is data to show.
3148 Added average volumes into the top table text output.
3149
3150 SC/04 Eximstats V1.46
3151 Collect data on the number of addresses (recipients)
3152 as well as the number of messages.
3153
3154 SC/05 Eximstats V1.47
3155 Added 'Message too big' to the list of mail rejection
3156 reasons (thanks to Marco Gaiarin).
3157
3158 SC/06 Eximstats V1.48
3159 Mainlog lines which have GMT offsets and are too short to
3160 have a flag are now skipped.
3161
3162 SC/07 Eximstats V1.49 (Alain Williams)
3163 Added the -emptyok flag.
3164
3165 SC/08 Eximstats V1.50
3166 Fixes for obtaining the IP address from reject messages.
3167
3168 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
3169 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
3170 whitespace changes from 4.64-PH/27
3171
3172 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
3173 match 4.64-PH/13
3174
3175 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
3176 are found, allow negative numbers in numeric criteria)
3177
3178 JJ/06 exipick.20061117.2, added new $message_body_missing variable
3179
3180 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
3181 to match changes made in 4.64-PH/43
3182
3183 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
3184
3185 PH/47 Put in an explicit test for a DNS lookup of an address record where the
3186 "domain" is actually an IP address, and force a failure. This locks out
3187 those revolvers/nameservers that support "A-for-A" lookups, in
3188 contravention of the specifications.
3189
3190 PH/48 When a host name was looked up from an IP address, and the subsequent
3191 forward lookup of the name timed out, the host name was left in
3192 $sender_host_name, contrary to the specification.
3193
3194 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
3195 restricted to single-key lookups, Exim was not diagnosing an error if
3196 * or *@ was used with a query-style lookup.
3197
3198 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
3199
3200 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
3201 long ago, but noone interested enough thought of it. Let's just say that
3202 the "1.1" means that there are some new functions that weren't there at
3203 some point in the past.
3204
3205 PH/51 Error processing for expansion failure of helo_data from an smtp
3206 transport during callout processing was broken.
3207
3208 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
3209 tested/used via the -bh/-bhc/-bs options.
3210
3211 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
3212 bug, fixed in subsequent PCRE releases).
3213
3214 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
3215 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
3216
3217 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
3218
3219
3220 Exim version 4.63
3221 -----------------
3222
3223 SC/01 Use a glob alias rather than an array ref in eximstats generated
3224 parser. This improves both readability and performance.
3225
3226 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
3227 Don't display local sender or destination tables in eximstats unless
3228 there is data to show.
3229 Added average volumes into the eximstats top table text output.
3230
3231 SC/03 Collect data on the number of addresses (recipients) as well
3232 as the number of messages in eximstats.
3233
3234 TF/01 Correct an error in the documentation for the redirect router. Exim
3235 does (usually) call initgroups() when daemonizing.
3236
3237 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
3238 with consistent privilege compared to when running as a daemon.
3239
3240 TF/03 Note in the spec that $authenticated_id is not set for local
3241 submissions from trusted users.
3242
3243 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
3244 Thanks to Dean Brooks <dean@iglou.com> for the patch.
3245
3246 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
3247 by adding some example configuration directives to the default
3248 configuration file. A little bit of work is required to uncomment the
3249 directives and define how usernames and passwords are checked, but
3250 there is now a framework to start from.
3251
3252 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
3253 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
3254 without this. I don't know how relevant this is to other LDAP libraries.
3255
3256 PH/02 Add the verb name to the "unknown ACL verb" error.
3257
3258 PH/03 Magnus Holmgren's patch for filter_prepend_home.
3259
3260 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
3261
3262 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
3263 directory not expanded when it should be if an expanded home directory
3264 was set for the address (which is overridden by the transport).
3265
3266 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
3267 libradius.
3268
3269 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
3270 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
3271 because it is too late at that time, and has no effect.
3272
3273 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
3274 security issue with \' (bugzilla #107). I could not use the
3275 PQescapeStringConn() function, because it needs a PGconn value as one of
3276 its arguments.
3277
3278 PH/08 When testing addresses using -bt, indicate those final addresses that
3279 are duplicates that would not cause an additional delivery. At least one
3280 person was confused, thinking that -bt output corresponded to deliveries.
3281 (Suppressing duplicates isn't a good idea as you lose the information
3282 about possibly different redirections that led to the duplicates.)
3283
3284 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
3285 systems where poll() doesn't work, in particular OS X.
3286
3287 PH/10 Added more information to debugging output for retry time not reached.
3288
3289 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
3290 operations in malware.c.
3291
3292 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
3293 signatures.
3294
3295 PH/13 If write_rejectlog was set false when logging was sent to syslog with
3296 syslog_duplication set false, log lines that would normally be written
3297 both the the main log and to the reject log were not written to syslog at
3298 all.
3299
3300 PH/14 In the default configuration, change the use of "message" in ACL warn
3301 statements to "add_header".
3302
3303 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
3304 not followed by a command (e.g. "seen endif").
3305
3306 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
3307 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
3308 latter.
3309
3310 PH/17 Added extra conditions to the default value of delay_warning_condition
3311 so that it is now:
3312
3313 ${if or { \
3314 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
3315 { match{$h_precedence:}{(?i)bulk|list|junk} } \
3316 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
3317 }{no}{yes}}
3318
3319 The Auto-Submitted: and various List- headers are standardised, whereas I
3320 don't think Precedence: ever was.
3321
3322 PH/18 Refactored debugging code in route_finduser() to show more information,
3323 in particular, the error code if getpwnam() issues one.
3324
3325 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
3326 This is apparently needed in addition to the PH/07 change above to avoid
3327 any possible encoding problems.
3328
3329 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
3330 but not after initializing Perl.
3331
3332 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
3333 output them only if debugging. By default they are written stderr,
3334 apparently, which is not desirable.
3335
3336 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
3337 queries.
3338
3339 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
3340 --not options
3341
3342 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
3343
3344 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
3345 authenticated or an ident call has been made. Suppress the default
3346 values for $authenticated_id and $authenticated_sender (but permit -oMai
3347 and -oMas) when testing with -bh.
3348
3349 PH/24 Re-jigged the order of the tests in the default configuration so that the
3350 tests for valid domains and recipients precede the DNS black list and CSA
3351 tests, on the grounds that those ones are more expensive.
3352
3353 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
3354 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
3355 This bug exists in every version of Exim that I still have, right back to
3356 0.12.
3357
3358 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
3359 However, an attempt to turn on case-sensitivity in a regex key by
3360 including (?-i) didn't work because the subject string was already
3361 lowercased, and the effects were non-intuitive. It turns out that a
3362 one-line patch can be used to allow (?-i) to work as expected.
3363
3364
3365 Exim version 4.62
3366 -----------------
3367
3368 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
3369 other effects) broke the use of negated acl sub-conditions.
3370
3371 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
3372 patch).
3373
3374 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
3375 "Deny" causes Exim to reject the incoming connection with a 554 error.
3376 Unfortunately, if there is a major crisis, such as a disk failure,
3377 tcp-wrappers gives "deny", whereas what one would like would be some
3378 kind of temporary error. A kludge has been added to help with this.
3379 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
3380 554 error is used if errno is still zero or contains ENOENT (which occurs
3381 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
3382 451 error is used.
3383
3384 PH/03 Add -lutil to the default FreeBSD LIBS setting.
3385
3386 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
3387 errors. Otherwise a message that provokes a temporary error (when other
3388 messages do not) can cause a whole host to time out.
3389
3390 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
3391 addresses were routed directly to files or pipes from a redirect router.
3392 File deliveries just didn't batch; pipe deliveries might have suffered
3393 odd errors.
3394
3395 PH/06 A failure to get a lock for a hints database would erroneously always say
3396 "Failed to get write lock", even when it was really a read lock.
3397
3398 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
3399 of 0600. This has been changed to use the value of the lockfile_mode
3400 option (which defaults to 0600).
3401
3402 PH/08 Applied small patch from the Sieve maintainer.
3403
3404 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
3405 folder from quota calculations, a direct delivery into this folder messed
3406 up the contents of the maildirsize file. This was because the regex was
3407 used only to exclude .Trash (or whatever) when the size of the mailbox
3408 was calculated. There was no check that a delivery was happening into an
3409 excluded directory. This bug has been fixed by ignoring all quota
3410 processing for deliveries into excluded directories.
3411
3412 PH/10 Added the maildirfolder_create_regex option to appendfile.
3413
3414
3415 Exim version 4.61
3416 -----------------
3417
3418 PH/01 The code for finding all the local interface addresses on a FreeBSD
3419 system running IPv6 was broken. This may well have applied to all BSD
3420 systems, as well as to others that have similar system calls. The broken
3421 code found IPv4 interfaces correctly, but gave incorrect values for the
3422 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
3423 that it would not match correctly against @[] and not recognize the IPv6
3424 addresses as local.
3425
3426 PH/02 The ipliteral router was not recognizing addresses of the form user@
3427 [ipv6:....] because it didn't know about the "ipv6:" prefix.
3428
3429 PH/03 Added disable_ipv6.
3430
3431 PH/04 Changed $reply_address to use the raw form of the headers instead of the
3432 decoded form, because it is most often used to construct To: headers
3433 lines in autoreplies, and the decoded form may well be syntactically
3434 invalid. However, $reply_address has leading white space removed, and all
3435 newlines turned into spaces so that the autoreply transport does not
3436 grumble.
3437
3438 PH/05 If group was specified without a user on a router, and no group or user
3439 was specified on a transport, the group from the router was ignored.
3440
3441 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
3442 for visible compile-time settings that can be used to change these
3443 numbers, for those that want even more. Backwards compatibility with old
3444 spool files has been maintained. However, going back to a previous Exim
3445 release will lost any variables that are in spool files.
3446
3447 PH/07 Two small changes when running in the test harness: increase delay when
3448 passing a TCP/IP connection to a new process, in case the original
3449 process has to generate a bounce, and remove special handling of
3450 127.0.0.2 (sic), which is no longer necessary.
3451
3452 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
3453 be the same on different OS.
3454
3455 PH/09 Moved a debug statement in filter processing to avoid a race problem when
3456 testing.
3457
3458 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
3459 whether --show-vars was specified or not
3460
3461 JJ/02 exipick: Added support for new ACL variable spool format introduced
3462 in 4.61-PH/06
3463
3464 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
3465 syntactically invalid From: or Reply-to: line, and a filter used this to
3466 generate an autoreply, and therefore failed to obtain an address for the
3467 autoreply, Exim could try to deliver to a non-existent relative file
3468 name, causing unrelated and misleading errors. What now happens is that
3469 it logs this as a hard delivery error, but does not attempt to create a
3470 bounce message.
3471
3472 PH/11 The exinext utility has a -C option for testing purposes, but although
3473 the given file was scanned by exinext itself; it wasn't being passed on
3474 when Exim was called.
3475
3476 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
3477 an end-of-file indication when reading a command response.
3478
3479 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
3480 compiled. In many other places in Exim, IPv6 addresses are always
3481 recognized, so I have changed this. It also means that IPv4 domain
3482 literals of the form [IPV4:n.n.n.n] are now always recognized.
3483
3484 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
3485 used if the router is not running as root, for example, when verifying at
3486 ACL time, or when using -bh. The debugging output from this situation was
3487 non-existent - all you got was a failure to exec. I have made two
3488 changes:
3489
3490 (a) Failures to set uid/gid, the current directory, or a process leader
3491 in a subprocess such as that created by queryprogram now generate
3492 suitable debugging output when -d is set.
3493
3494 (b) The queryprogram router detects when it is not running as root,
3495 outputs suitable debugging information if -d is set, and then runs
3496 the subprocess without attempting to change uid/gid.
3497
3498 PH/15 Minor change to Makefile for building test_host (undocumented testing
3499 feature).
3500
3501 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
3502 additional section of a DNS packet that returns MX or SRV records.
3503 Instead, it always explicitly searches for A/AAAA records. This avoids
3504 major problems that occur when a DNS server includes only records of one
3505 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
3506 fixed another bug: if SRV records were looked up and the corresponding
3507 address records were *not* found in the additional section, the port
3508 values from the SRV records were lost.
3509
3510 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
3511 using the correct key (the original address) when searching the retry
3512 rules in order to find which one to use for generating the retry hint.
3513
3514 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
3515 adding the default one. Similarly, if it contains a Reply-To: header, the
3516 errors_reply_to option, if set, is not used.
3517
3518 PH/19 When calculating a retry time, Exim used to measure the "time since
3519 failure" by looking at the "first failed" field in the retry record. Now
3520 it does not use this if it is later than than the arrival time of the
3521 message. Instead it uses the arrival time. This makes for better
3522 behaviour in cases where some deliveries succeed, thus re-setting the
3523 "first failed" field. An example is a quota failure for a huge message
3524 when small messages continue to be delivered. Without this change, the
3525 "time since failure" will always be short, possible causing more frequent
3526 delivery attempts for the huge message than are intended.
3527 [Note: This change was subsequently modified - see PH/04 for 4.62.]
3528
3529 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
3530 $1, $2, $3) because the numerical variables can be reset during some
3531 expansion items (e.g. "match"), thereby losing the authentication data.
3532
3533 PH/21 Make -bV show the size of off_t variables so that the test suite can
3534 decide whether to run tests for quotas > 2G.
3535
3536 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
3537 mailbox_size, and mailbox_filecount in the appendfile transport. If a
3538 filecount value is greater than 2G or if a quota value is greater than 2G
3539 on a system where the size of off_t is not greater than 4, a panic error
3540 is given.
3541
3542 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
3543 never match. The debug and -bh output now contains an explicit error
3544 message indicating a malformed IPv4 address or mask.
3545
3546 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
3547 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
3548 PH/23 above applies.
3549
3550 PH/25 Do not write to syslog when running in the test harness. The only
3551 occasion when this arises is a failure to open the main or panic logs
3552 (for which there is an explicit test).
3553
3554 PH/26 Added the /no_tell option to "control=freeze".
3555
3556 PH/27 If a host name lookup failed very early in a connection, for example, if
3557 the IP address matched host_lookup and the reverse lookup yielded a name
3558 that did not have a forward lookup, an error message of the form "no IP
3559 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
3560 could be logged. Now it outputs the IP address instead of "NULL".
3561
3562 PH/28 An enabling patch from MH: add new function child_open_exim2() which
3563 allows the sender and the authenticated sender to be set when
3564 submitting a message from within Exim. Since child_open_exim() is
3565 documented for local_scan(), the new function should be too.
3566
3567 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
3568 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
3569 results in an empty string is now treated as unset.
3570
3571 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
3572
3573 PH/31 Added sender_verify_fail logging option.
3574
3575 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
3576 needed by RFC 822 but not by RFC 2822 was commented out. I have now
3577 tidied the source and removed it altogether.
3578
3579 PH/33 When a queue run was abandoned because the load average was too high, a
3580 log line was always written; now it is written only if the queue_run log
3581 selector is set. In addition, the log line for abandonment now contains
3582 information about the queue run such as the pid. This is always present
3583 in "start" and "stop" lines but was omitted from the "abandon" line.
3584
3585 PH/34 Omit spaces between a header name and the colon in the error message that
3586 is given when verify = headers_syntax fails (if there are lots of them,
3587 the message gets confusing).
3588
3589 PH/35 Change the default for dns_check_names_pattern to allow slashes within
3590 names, as there are now some PTR records that contain slashes. This check
3591 is only to protect against broken name servers that fall over on strange
3592 characters, so the fact that it applies to all lookups doesn't matter.
3593
3594 PH/36 Now that the new test suite is complete, we can remove some of the
3595 special code in Exim that was needed for the old test suite. For example,
3596 sorting DNS records because real resolvers return them in an arbitrary
3597 order. The new test suite's fake resolver always returns records in the
3598 same order.
3599
3600 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
3601 bounces) except when queue_only is set, to avoid logging races between
3602 the different processes.
3603
3604 PH/38 Panic-die if .include specifies a non-absolute path.
3605
3606 PH/39 A tweak to the "H" retry rule from its user.
3607
3608 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
3609 a label. They prevented compilation on older perls.
3610
3611 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
3612 a warning to be raised on newish perls.
3613
3614 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
3615 on queue. Changes to match documented behaviour of showing count of
3616 messages matching specified criteria.
3617
3618 PH/40 Changed the default ident timeout from 30s to 5s.
3619
3620 PH/41 Added support for the use of login_cap features, on those BSD systems
3621 that have them, for controlling the resources used by pipe deliveries.
3622
3623 PH/42 The content-scanning code uses fopen() to create files in which to put
3624 message data. Previously it was not paying any attention to the mode of
3625 the files. Exim runs with umask(0) because the rest of the code creates
3626 files with open(), and sets the required mode explicitly. Thus, these
3627 files were ending up world-writeable. This was not a big issue, because,
3628 being within the spool directory, they were not world-accessible. I have
3629 created a function called modefopen, which takes an additional mode
3630 argument. It sets umask(777), creates the file, chmods it to the required
3631 mode, then resets the umask. All the relevant calls to fopen() in the
3632 content scanning code have been changed to use this function.
3633
3634 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
3635 to 24 hours. This avoids potential overflow problems when processing G
3636 and H retry rules. I suspect nobody ever tinkers with this value.
3637
3638 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
3639
3640 PH/45 When the plaintext authenticator is running as a client, the server's
3641 challenges are checked to ensure they are valid base64 strings. By
3642 default, the authentication attempt is cancelled if an invalid string is
3643 received. Setting client_ignore_invalid_base64 true ignores these errors.
3644 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
3645 they are received. Thus, the responses can be made to depend on the
3646 challenges. If an invalid string is ignored, an empty string is placed in
3647 the variable.
3648
3649 PH/46 Messages that are created by the autoreply transport now contains a
3650 References: header, in accordance with RFCs 2822 and 3834.
3651
3652 PH/47 Added authenticated_sender_force to the smtp transport.
3653
3654 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
3655
3656 PH/49 Installed latest patch from the Sieve maintainer.
3657
3658 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
3659 was also set, the appendfile transport was unnecessarily scanning a
3660 directory of message files (e.g. for maildir delivery) to find the count
3661 of files (along with the size), even though it did not need this
3662 information. It now does the scan only if it needs to find either the
3663 size of the count of files.
3664
3665 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
3666
3667 PH/52 Two bugs concerned with error handling when the smtp transport is
3668 used in LMTP mode:
3669
3670 (i) Exim was not creating retry information for temporary errors given
3671 for individual recipients after the DATA command when the smtp transport
3672 was used in LMTP mode. This meant that they could be retried too
3673 frequently, and not timed out correctly.
3674
3675 (ii) Exim was setting the flag that allows error details to be returned
3676 for LMTP errors on RCPT commands, but not for LMTP errors for individual
3677 recipients that were returned after the DATA command.
3678
3679 PH/53 This is related to PH/52, but is more general: for any failing address,
3680 when detailed error information was permitted to be returned to the
3681 sender, but the error was temporary, then after the final timeout, only
3682 "retry timeout exceeded" was returned. Now it returns the full error as
3683 well as "retry timeout exceeded".
3684
3685 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
3686 do this, and (what is worse) MTAs that accept it.
3687
3688 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
3689 will now be deprecated.
3690
3691 PH/56 New os.c-cygwin from the Cygwin maintainer.
3692
3693 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
3694 formats (previously only available in exim formats via -bpr, -bpru,
3695 and -bpra. Now also available in native and exiqgrep formats)
3696
3697 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
3698 with very large, slow to parse queues
3699
3700 JJ/08 exipick: added ! as generic prefix to negate any criteria format
3701
3702 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
3703
3704 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
3705 responses to authentication challenges, though it was showing the
3706 challenges; (ii) I've removed the CR characters from the debug output for
3707 SMTP output lines.
3708
3709 PH/58 Allow for the insertion of a newline as well as a space when a string
3710 is turned into more than one encoded-word during RFC 2047 encoding. The
3711 Sieve code now uses this.
3712
3713 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
3714 data_4xx, lost_connection, tls_required.
3715
3716 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
3717 message was being sent as an SMTP response.
3718
3719 PH/61 Add -l and -k options to exicyclog.
3720
3721 PH/62 When verifying, if an address was redirected to one new address, so that
3722 verification continued, and the new address failed or deferred after
3723 having set something in $address_data, the value of $address_data was not
3724 passed back to the ACL. This was different to the case when no
3725 redirection occurred. The value is now passed back in both cases.
3726
3727 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
3728 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
3729 use login_cap.h, so on its own it isn't the distinguishing feature. The
3730 new name refers directly to the setclassresources() function.
3731
3732 PH/65 Added configuration files for NetBSD3.
3733
3734 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
3735
3736 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
3737 is preferred over IPv4.
3738
3739 PH/68 The bounce_return_message and bounce_return_body options were not being
3740 honoured for bounces generated during the reception of non-SMTP messages.
3741 In particular, this applied to messages rejected by the ACL. This bug has
3742 been fixed. However, if bounce_return_message is true and bounce_return_
3743 body is false, the headers that are returned for a non-SMTP message
3744 include only those that have been read before the error was detected.
3745 (In the case of an ACL rejection, they have all been read.)
3746
3747 PH/69 The HTML version of the specification is now built in a directory called
3748 spec_html instead of spec.html, because the latter looks like a path with
3749 a MIME-type, and this confuses some software.
3750
3751 PH/70 Catch two compiler warnings in sieve.c.
3752
3753 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
3754 function verify_get_ident() calls ip_connect() to connect a socket, but
3755 if the "connect()" function timed out, ip_connect() used to close the
3756 socket. However, verify_get_ident() also closes the socket later, and in
3757 between Exim writes to the log, which may get opened at this point. When
3758 the socket was closed in ip_connect(), the log could get the same file
3759 descriptor number as the socket. This naturally causes chaos. The fix is
3760 not to close the socket in ip_connect(); the socket should be closed by
3761 the function that creates it. There was only one place in the code where
3762 this was missing, in the iplookup router, which I don't think anybody now
3763 uses, but I've fixed it anyway.
3764
3765 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
3766 well as to direct DNS lookups. Otherwise the handling of names in host
3767 lists is inconsistent and therefore confusing.
3768
3769
3770 Exim version 4.60
3771 -----------------
3772
3773 PH/01 Two changes to the default runtime configuration:
3774
3775 (1) Move the checks for relay_from_hosts and authenticated clients from
3776 after to before the (commented out) DNS black list checks.
3777
3778 (2) Add control=submission to the relay_from_hosts and authenticated
3779 clients checks, on the grounds that messages accepted by these
3780 statements are most likely to be submissions.
3781
3782 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
3783
3784 (1) Generate an error if the third argument for the ${prvs expansion is
3785 not a single digit.
3786
3787 (2) Treat a missing third argument of ${prvscheck as if it were an empty
3788 string.
3789
3790 (3) Reset the variables that are obtained from the first argument of
3791 ${prvscheck and used in the second argument before leaving the code,
3792 because their memory is reclaimed, so using them afterwards may do
3793 silly things.
3794
3795 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
3796 one (it's much easier than Tom thought :-).
3797
3798 (5) Because of (4), we can now allow for the use of $prvscheck_result
3799 inside the third argument.
3800
3801 PH/03 For some reason, the default setting of PATH when running a command from
3802 a pipe transport was just "/usr/bin". I have changed it to
3803 "/bin:/usr/bin".
3804
3805 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
3806 anything to be listed in the output from -bV.
3807
3808 PH/05 When a filter generated an autoreply, the entire To: header line was
3809 quoted in the delivery log line, like this:
3810
3811 => >A.N.Other <ano@some.domain> <original@ddress> ...
3812
3813 This has been changed so that it extracts the operative address. There
3814 may be more than one such address. If so, they are comma-separated, like
3815 this:
3816
3817 => >ano@some.domain,ona@other.domain <original@ddress> ...
3818
3819 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
3820 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
3821 not being looked up in the rDNS to get a host name, Exim was showing the
3822 IP address twice in Received: lines, even though the IP addresses were
3823 identical. For example:
3824
3825 Received: from [1.2.3.4] (helo=[1.2.3.4])
3826
3827 However, if the real host name was known, it was omitting the HELO data
3828 if it matched the actual IP address. This has been tidied up so that it
3829 doesn't show the same IP address twice.
3830
3831 PH/07 When both +timestamp and +memory debugging was on, the value given by
3832 $tod_xxx expansions could be wrong, because the tod_stamp() function was
3833 called by the debug printing, thereby overwriting the timestamp buffer.
3834 Debugging no longer uses the tod_stamp() function when +timestamp is set.
3835
3836 PH/08 When the original message was included in an autoreply transport, it
3837 always said "this is a copy of the message, including all the headers",
3838 even if body_only or headers_only was set. It now gives an appropriate
3839 message.
3840
3841 PH/09 Applied a patch from the Sieve maintainer which:
3842
3843 o fixes some comments
3844 o adds the (disabled) notify extension core
3845 o adds some debug output for the result of if/elsif tests
3846 o points to the current vacation draft in the documentation
3847 and documents the missing references header update
3848
3849 and most important:
3850
3851 o fixes a bug in processing the envelope test (when testing
3852 multiple envelope elements, the last element determined the
3853 result)
3854
3855 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
3856 Electronic Mail") by including:
3857
3858 Auto-submitted: auto-generated
3859
3860 in the messages that it generates (bounce messages and others, such as
3861 warnings). In the case of bounce messages for non-SMTP messages, there was
3862 also a typo: it was using "Auto_submitted" (underscore instead of
3863 hyphen). Since every message generated by Exim is necessarily in response
3864 to another message, thes have all been changed to:
3865
3866 Auto-Submitted: auto-replied
3867
3868 in accordance with these statements in the RFC:
3869
3870 The auto-replied keyword:
3871
3872 - SHOULD be used on messages sent in direct response to another
3873 message by an automatic process,
3874
3875 - MUST NOT be used on manually-generated messages,
3876
3877 - MAY be used on Delivery Status Notifications (DSNs) and Message
3878 Disposition Notifications (MDNs),
3879
3880 - MUST NOT be used on messages generated by automatic or periodic
3881 processes, except for messages which are automatic responses to
3882 other messages.
3883
3884 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
3885 to the default Received: header definition.
3886
3887 PH/12 Added log selector acl_warn_skipped (default on).
3888
3889 PH/13 After a successful wildlsearch lookup, discard the values of numeric
3890 variables because (a) they are in the wrong storage pool and (b) even if
3891 they were copied, it wouldn't work properly because of the caching.
3892
3893 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
3894 checking when decoding. Apparently there are clients that generate
3895 overlong encoded strings. Why am I not surprised?
3896
3897 PH/15 If the first argument of "${if match_address" was not empty, but did not
3898 contain an "@" character, Exim crashed. Now it writes a panic log message
3899 and treats the condition as false.
3900
3901 PH/16 In autoreply, treat an empty string for "once" the same as unset.
3902
3903 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
3904 extension "envelope-auth". The code is finished and in agreement with
3905 other implementations, but there is no documentation so far and in fact,
3906 nobody wrote the draft yet. This extension is currently #undef'ed, thus
3907 not changing the active code.
3908
3909 Print executed "if" and "elsif" statements when debugging is used. This
3910 helps a great deal to understand what a filter does.
3911
3912 Document more things not specified clearly in RFC3028. I had all this
3913 sorted out, when out of a sudden new issues came to my mind. Oops."
3914
3915 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
3916 (Bugzilla #53).
3917
3918 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
3919 canonical form (as documented). However, after a host name lookup from
3920 the IP address, check_host() was doing a simple string comparison with
3921 addresses acquired from the DNS when checking that the found name did
3922 have the original IP as one of its addresses. Since any found IPv6
3923 addresses are likely to be in abbreviated form, the comparison could
3924 fail. Luckily, there already exists a function for doing the comparison
3925 by converting both addresses to binary, so now that is used instead of
3926 the text comparison.
3927
3928 PH/20 There was another similar case to PH/19, when a complete host name was
3929 given in a host list; looking up its IP address could give an abbreviated
3930 form, whereas the current host's name might or might not be abbreviated.
3931 The same fix has been applied.
3932
3933
3934 Exim version 4.54
3935 -----------------
3936
3937 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
3938 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
3939 It now does.
3940
3941 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
3942 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
3943
3944 PH/03 Typo: missing ".o" in src/pcre/Makefile.
3945
3946 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
3947 header line, restrict the check to what is listed in RFCs 2369 and 2929.
3948 Also, for "Auto-Submitted", treat anything other than "no" as
3949 non-personal, in accordance with RFC 3834. (Previously it treated
3950 anything starting "auto-" as non-personal.)
3951
3952 TF/01 The control=submission/name=... option had a problem with syntax
3953 errors if the name included a slash character. The /name= option
3954 now slurps the rest of the string, so it can include any characters
3955 but it must come last in the list of options (after /sender_retain
3956 or /domain=).
3957
3958 PH/05 Some modifications to the interface to the fake nameserver for the new
3959 testing suite.
3960
3961
3962
3963 Exim version 4.53
3964 -----------------
3965
3966 TK/01 Added the "success_on_redirect" address verification option. See
3967 NewStuff for rationale and an example.
3968
3969 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
3970
3971 PH/02 Patch to exigrep to allow it to work on syslog lines.
3972
3973 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
3974 fread() to skip over the body file's header line, because in Cygwin the
3975 header line is locked and is inaccessible.
3976
3977 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
3978 co-exist for some time) to make it clear that it is the Exim ID that is
3979 referenced, not the Message-ID: header line.
3980
3981 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
3982 string_format() function, because snprintf() does not exist on all
3983 operating systems.
3984
3985 PH/06 The use of forbid_filter_existstest now also locks out the use of the
3986 ${stat: expansion item.
3987
3988 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
3989 protocol synchronization error", to keep the pedants happy.
3990
3991 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
3992 well as for IRIX systems, when gcc is being used. See the host.c source
3993 file for comments.
3994
3995 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
3996
3997 PH/10 Named domain lists were not working if used in a queue_smtp_domains
3998 setting.
3999
4000 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
4001 transport and to the smtp transport in LMTP mode.
4002
4003 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
4004
4005 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
4006 run a filter in a subprocess. This could lead to confusion in subsequent
4007 lookups in the parent process. There should also be a search_tidyup() at
4008 the end of the subprocess.
4009
4010 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
4011 only if the host matched helo_try_verify_hosts, which caused the
4012 verification to occur when the EHLO/HELO command was issued. The ACL just
4013 tested the remembered result. Now, if a previous verification attempt has
4014 not happened, "verify = helo" does it there and then.
4015
4016 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
4017
4018 TK/03 Fix log output including CR from clamd.
4019
4020 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
4021 exist provoked a memory error which could cause a segfault.
4022
4023 PH/15 Installed PCRE 6.2
4024
4025 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
4026
4027 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
4028 of the problem. Specifically, suggested +O2 rather than +O1 for the
4029 HP-UX compiler.
4030
4031 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
4032
4033 PH/20 If a delivery was routed to a non-standard port by means of an SRV
4034 record, the port was not correctly logged when the outgoing_port log
4035 selector was set (it logged the transort's default port).
4036
4037 PH/21 Added support for host-specific ports to manualroute, queryprogram,
4038 fallback_hosts, and "hosts" in the smtp transport.
4039
4040 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
4041 host errors such as "Connection refused".
4042
4043 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
4044 authentication with radiusclient 0.4.9:
4045
4046 - Error returned from rc_read_config was caught wrongly
4047 - Username/password not passed on to radius server due to wrong length.
4048
4049 The presumption is that some radiusclient API changes for 4.51/PH/17
4050 were not taken care of correctly. The code is still untested by me (my
4051 Linux distribution still has 0.3.2 of radiusclient), but it was
4052 contributed by a Radius user.
4053
4054 PH/24 When doing a callout, the value of $domain wasn't set correctly when
4055 expanding the "port" option of the smtp transport.
4056
4057 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
4058 while reading a MIME header. Thanks to Tom Hughes for a patch.
4059
4060 PH/24 Include config.h inside local_scan.h so that configuration settings are
4061 available.
4062
4063 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
4064 that in an ACL for RCPT (for example), you can examine exactly what was
4065 received.
4066
4067 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
4068 commands, but it was not correctly comparing the address with the actual
4069 client host address. Thus, it would show the EHLO address in Received:
4070 header lines when this was not necessary.
4071
4072 PH/27 Added the % operator to ${eval:}.
4073
4074 PH/28 Exim tries to create and chdir to its spool directory when it starts;
4075 it should be ignoring failures (because with -C, for example, it has lost
4076 privilege). It wasn't ignoring creation failures other than "already
4077 exists".
4078
4079 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
4080 -bV or -d is used.
4081
4082 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
4083 because an input line was too long, either on its own, or by virtue of
4084 too many continuations, the temporary file was not being removed, and the
4085 return code was incorrect.
4086
4087 PH/31 Missing "BOOL" in function definition in filtertest.c.
4088
4089 PH/32 Applied Sieve patches from the maintainer.
4090
4091 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
4092
4093 PH/33 Added "verify = not_blind".
4094
4095 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
4096 Local/Makefile (with some defaults set). These are used in built scripts
4097 such as exicyclog, but they have never been used in the exim_install
4098 script (though there are many overriding facilities there). I have
4099 arranged that the exim_install script now takes note of these two
4100 settings.
4101
4102 PH/35 Installed configuration files for Dragonfly.
4103
4104 PH/36 When a locally submitted message by a trusted user did not contain a
4105 From: header, and the sender address was obtained from -f or from an SMTP
4106 MAIL command, and the trusted user did not use -F to supply a sender
4107 name, $originator_name was incorrectly used when constructing a From:
4108 header. Furthermore, $originator_name was used for submission mode
4109 messages from external hosts without From: headers in a similar way,
4110 which is clearly wrong.
4111
4112 PH/37 Added control=suppress_local_fixups.
4113
4114 PH/38 When log_selector = +received_sender was set, and the addition of the
4115 sender made the log line's construction buffer exactly full, or one byte
4116 less than full, an overflow happened when the terminating "\n" was
4117 subsequently added.
4118
4119 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
4120 when the result of a list match is failure because a DNS lookup failed.
4121
4122 PH/40 RM_COMMAND is now used in the building process.
4123
4124 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
4125 the "build-* directories that it finds.
4126
4127 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
4128 address in a domain literal was a prefix of an interface address.
4129
4130 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
4131 when verifying a sender address, unless rewrite_headers is false.
4132
4133 PH/44 Wrote a long comment about why errors_to addresses are verified as
4134 recipients, not senders.
4135
4136 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
4137 the ratelimit ACL was added.
4138
4139 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
4140
4141 PH/46 Added extra information about PostgreSQL errors to the error string.
4142
4143 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
4144 avoiding the need to install special zones in a real server. This is
4145 backwards compatible; if it can't find the fake resolver, it drops back.
4146 Thus, both old and new test suites can be run.
4147
4148 TF/02 Added util/ratelimit.pl
4149
4150 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
4151 clock is set back in time.
4152
4153 TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
4154 Candler <B.Candler@pobox.com>.
4155
4156 TF/05 The fix for PH/43 was not completely correct; widen_domains is always
4157 OK for addresses that are the result of redirections.
4158
4159 PH/48 A number of further additions for the benefit of the new test suite,
4160 including a fake gethostbyname() that interfaces to the fake DNS resolver
4161 (see PH/47 above).
4162
4163 TF/06 The fix for widen_domains has also been applied to qualify_single and
4164 search_parents which are the other dnslookup options that can cause
4165 header rewrites.