TLS: refactor client-start interface
[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 4.93
9 -----------------
10
11 JH/01 OpenSSL: With debug enabled output keying information sufficient, server
12 side, to decode a TLS 1.3 packet capture.
13
14 JH/02 OpenSSL: Suppress the sending of (stateful) TLS1.3 session tickets.
15 Previously the default library behaviour applied, sending two, each in
16 its own TCP segment.
17
18 JH/03 Debug output for ACL now gives the config file name and line number for
19 each verb.
20
21 JH/04 The default received_header_text now uses the RFC 8314 tls cipher clause.
22
23 JH/05 DKIM: ensure that dkim_domain elements are lowercased before use.
24
25 JH/06 Fix buggy handling of autoreply bounce_return_size_limit, and a possible
26 buffer overrun for (non-chunking) other transports.
27
28 JH/07 GnuTLS: Our use of late (post-handshake) certificate verification, under
29 TLS1.3, means that a server rejecting a client certificate is not visible
30 to the client until the first read of encrypted data (typically the
31 response to EHLO). Add detection for that case and treat it as a failed
32 TLS connection attempt, so that the normal retry-in-clear can work (if
33 suitably configured).
34
35 JB/01 Bug 2375: fix expansions of 822 addresses having comments in local-part
36 and/or domain. Found and fixed by Jason Betts.
37
38
39 Exim version 4.92
40 -----------------
41
42 JH/01 Remove code calling the customisable local_scan function, unless a new
43 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
44
45 JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
46 non-signal-safe functions being used.
47
48 JH/03 Bug 2269: When presented with a received message having a stupidly large
49 number of DKIM-Signature headers, disable DKIM verification to avoid
50 a resource-consumption attack. The limit is set at twenty.
51
52 JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
53 report of oldest_pass in ${authres } in consequence, and separate out
54 some descriptions of reasons for verification fail.
55
56 JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
57 files in the spool were present and unlocked. A queue-runner could spot
58 them, resulting in a duplicate delivery. Fix that by doing the unlock
59 after the unlink. Investigation by Tim Stewart. Take the opportunity to
60 add more error-checking on spoolfile handling while that code is being
61 messed with.
62
63 PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
64 No known attacks, no CVE, this is defensive hardening.
65
66 JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
67 a queue-runner could start a delivery while other operations were ongoing.
68 Cutthrough delivery was a common victim, resulting in duplicate delivery.
69 Found and investigated by Tim Stewart. Fix by using the open message data
70 file handle rather than opening another, and not locally closing it (which
71 releases a lock) for that case, while creating the temporary .eml format
72 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
73
74 JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
75 $sender_verify_failure/$recipient_verify_failure to "random".
76
77 JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
78 legitimate.
79
80 JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
81 Previously this would segfault.
82
83 JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
84 segfault.
85
86 JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
87 like zero, since the resolver should be doing this for us, But we need one
88 as a CNAME but no MX presence gets the CNAME returned; we need to check
89 that doesn't point to an MX to declare it "no MX returned" rather than
90 "error, loop". A new main option is added so the older capability of
91 following some limited number of chain links is maintained.
92
93 JH/12 Add client-ip info to non-pass iprev ${authres } lines.
94
95 JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
96 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
97 now-deprecated earlier definitions used only specified the range up to TLS
98 1.2 (in the older-version library docs).
99
100 JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
101
102 JH/15 Rework TLS client-side context management. Stop using a global, and
103 explicitly pass a context around. This enables future use of TLS for
104 connections to service-daemons (eg. malware scanning) while a client smtp
105 connection is using TLS; with cutthrough connections this is quite likely.
106
107 JH/16 Fix ARC verification to do AS checks in reverse order.
108
109 JH/17 Support a "tls" option on the ${readsocket } expansion item.
110
111 JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
112 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
113 Previously the "utf8" would be re-prepended for every additional message.
114
115 JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
116 Previously thery were accepted, resulting in issues when attempting to
117 forward messages to a non-supporting MTA.
118
119 PP/02 Let -n work with printing macros too, not just options.
120
121 JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
122 one parent address was copied, and bogus data was used at delivery-logging
123 time. Either a crash (after delivery) or bogus log data could result.
124 Discovery and analysis by Tim Stewart.
125
126 PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
127 Previously if the string ended mid-character, we did not insert the
128 promised '?' replacement.
129
130 PP/04 Documentation: current string operators work on bytes, not codepoints.
131
132 JH/21 Change as many as possible of the global flags into one-bit bitfields; these
133 should pack well giving a smaller memory footprint so better caching and
134 therefore performance. Group the declarations where this can't be done so
135 that the byte-sized flag variables are not interspersed among pointer
136 variables, giving a better chance of good packing by the compiler.
137
138 JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
139 non-null, to avoid issues with sites running BATV. Previously reports were
140 sent with an empty envelope sender so looked like bounces.
141
142 JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
143 The ignore_error flag wasn't being returned from the filter subprocess so
144 was not set for later routers. Investigation and fix by Matthias Kurz.
145
146 JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
147 and a msg:complete for the whole, when a message is manually removed using
148 -Mrm. Developement by Matthias Kurz, hacked on by JH.
149
150 JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
151 a "Gnu special" function, asprintf() in the DB utility binary builds; I
152 hope that is portable enough.
153
154 JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
155 requiring a known-CA anchor certificate; make it now rely entirely on the
156 TLSA as an anchor. Checking the name on the leaf cert against the name
157 on the A-record for the host is still done for TA (but not for EE mode).
158
159 JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
160 included in delivery lines for non-proxied connections, when compiled with
161 SUPPORT_SOCKS and running with proxy logging enabled.
162
163 JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
164 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
165 move the existing event to fire before the normal logging of message
166 failure so that custom logging is bracketed by normal logging.
167
168 JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
169 msg:fail:internal event. Developement by Matthias Kurz.
170
171 JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
172 far too small for todays use of crypto signatures stored there. Go all
173 the way to the max DNS message size of 64kB, even though this might be
174 overmuch for IOT constrained device use.
175
176 JH/31 Fix a bad use of a copy function, which could be used to pointlessly
177 copy a string over itself. The library routine is documented as not
178 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
179
180 JH/32 For main options check_spool_space and check_inode_space, where the
181 platform supports 64b integers, support more than the previous 2^31 kB
182 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
183 the previous G, M, k.
184
185 JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
186 $authenticated_fail_id variable on authentication failure. Previously
187 it was unset.
188
189 JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
190 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
191 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
192 GNUTLS_SEC_PARAM_MEDIUM.
193
194 JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server
195 side. Previously we would continue as if no SNI had been received.
196
197 JH/36 Harden the handling of string-lists. When a list consisted of a sole
198 "<" character, which should be a list-separator specification, we walked
199 off past the nul-terimation.
200
201 JH/37 Bug 2341: Send "message delayed" warning MDNs (restricted to external
202 causes) even when the retry time is not yet met. Previously they were
203 not, meaning that when (say) an account was over-quota and temp-rejecting,
204 and multiple senders' messages were queued, only one sender would get
205 notified on each configured delay_warning cycle.
206
207 JH/38 Bug 2351: Log failures to extract envelope addresses from message headers.
208
209 JH/39 OpenSSL: clear the error stack after an SSL_accept(). With anon-auth
210 cipher-suites, an error can be left on the stack even for a succeeding
211 accept; this results in impossible error messages when a later operation
212 actually does fail.
213
214 AM/01 Bug 2359: GnuTLS: repeat lowlevel read and write operations while they
215 return error codes indicating retry. Under TLS1.3 this becomes required.
216
217 JH/40 Fix the feature-cache refresh for EXPERIMENTAL_PIPE_CONNECT. Previously
218 it only wrote the new authenticators, resulting in a lack of tracking of
219 peer changes of ESMTP extensions until the next cache flush.
220
221 JH/41 Fix the loop reading a message header line to check for integer overflow,
222 and more-often against header_maxsize. Previously a crafted message could
223 induce a crash of the recive process; now the message is cleanly rejected.
224
225 JH/42 Bug 2366: Fix the behaviour of the dkim_verify_signers option. It had
226 been totally disabled for all of 4.91. Discovery and fix by "Mad Alex".
227
228
229 Exim version 4.91
230 -----------------
231
232 GF/01 DEFER rather than ERROR on redis cluster MOVED response.
233 When redis_servers is set to a list of > 1 element, and the Redis servers
234 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
235 case of MOVED into a DEFER case instead, thus moving the query onto the
236 next server in the list. For a cluster of N elements, all N servers must
237 be defined in redis_servers.
238
239 GF/02 Catch and remove uninitialized value warning in exiqsumm
240 Check for existence of @ARGV before looking at $ARGV[0]
241
242 JH/01 Replace the store_release() internal interface with store_newblock(),
243 which internalises the check required to safely use the old one, plus
244 the allocate and data copy operations duplicated in both (!) of the
245 extant use locations.
246
247 JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
248 modifier. This matches the restriction on the commandline.
249
250 JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
251 Previously only the last row was returned.
252
253 JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
254 we assumed that tags in the header were well-formed, and parsed the
255 element content after inspecting only the first char of the tag.
256 Assumptions at that stage could crash the receive process on malformed
257 input.
258
259 JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
260 While running the DKIM ACL we operate on the Permanent memory pool so that
261 variables created with "set" persist to the DATA ACL. Also (at any time)
262 DNS lookups that fail create cache records using the Permanent pool. But
263 expansions release any allocations made on the current pool - so a dnsdb
264 lookup expansion done in the DKIM ACL releases the memory used for the
265 DNS negative-cache, and bad things result. Solution is to switch to the
266 Main pool for expansions.
267 While we're in that code, add checks on the DNS cache during store_reset,
268 active in the testsuite.
269 Problem spotted, and debugging aided, by Wolfgang Breyha.
270
271 JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
272 When none of the hosts presented to a transport match an already-open
273 connection, close it and proceed with the list. Previously we would
274 queue the message. Spotted by Lena with Yahoo, probably involving
275 round-robin DNS.
276
277 JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
278 Previously a spurious "250 OK id=" response was appended to the proper
279 failure response.
280
281 JH/08 The "support for" informational output now, which built with Content
282 Scanning support, has a line for the malware scanner interfaces compiled
283 in. Interface can be individually included or not at build time.
284
285 JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
286 by the template makefile "src/EDITME". The "STREAM" support for an older
287 ClamAV interface method is removed.
288
289 JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
290 rows affected is given instead).
291
292 JH/11 The runtime Berkeley DB library version is now additionally output by
293 "exim -d -bV". Previously only the compile-time version was shown.
294
295 JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
296 SMTP connection. Previously, when one had more receipients than the
297 first, an abortive onward connection was made. Move to full support for
298 multiple onward connections in sequence, handling cutthrough connection
299 for all multi-message initiating connections.
300
301 JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
302 routers. Previously, a multi-recipient message would fail to match the
303 onward-connection opened for the first recipient, and cause its closure.
304
305 JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
306 a timeout on read on a GnuTLS initiating connection, resulting in the
307 initiating connection being dropped. This mattered most when the callout
308 was marked defer_ok. Fix to keep the two timeout-detection methods
309 separate.
310
311 JH/15 Relax results from ACL control request to enable cutthrough, in
312 unsupported situations, from error to silently (except under debug)
313 ignoring. This covers use with PRDR, frozen messages, queue-only and
314 fake-reject.
315
316 HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
317
318 JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
319 metadata, resulting in a crash in free().
320
321 PP/01 Fix broken Heimdal GSSAPI authenticator integration.
322 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
323 Broken also in d185889f4, with init system revamp.
324
325 JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
326 Previously we abruptly closed the connection after reading a malware-
327 found indication; now we go on to read the "scan ok" response line,
328 and send a quit.
329
330 JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
331 ACL. Previously, a crash would result.
332
333 JH/19 Speed up macro lookups during configuration file read, by skipping non-
334 macro text after a replacement (previously it was only once per line) and
335 by skipping builtin macros when searching for an uppercase lead character.
336
337 JH/20 DANE support moved from Experimental to mainline. The Makefile control
338 for the build is renamed.
339
340 JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
341 was allocated for every new TLS startup, meaning one per message. Fix
342 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
343
344 JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
345 reported the original. Fix to report (as far as possible) the ACL
346 result replacing the original.
347
348 JH/23 Fix memory leak during multi-message connections using STARTTLS under
349 OpenSSL. Certificate information is loaded for every new TLS startup,
350 and the resources needed to be freed.
351
352 JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
353
354 JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
355 was not propagated.
356
357 JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
358 DATA response info to the (existing) per-recipient response info for
359 the "C=" log element. It can have useful tracking info from the
360 destination system. Patch from Simon Arlott.
361
362 JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
363 length value. Previously this would segfault.
364
365 HS/02 Support Avast multiline protoocol, this allows passing flags to
366 newer versions of the scanner.
367
368 JH/28 Ensure that variables possibly set during message acceptance are marked
369 dead before release of memory in the daemon loop. This stops complaints
370 about them when the debug_store option is enabled. Discovered specifically
371 for sender_rate_period, but applies to a whole set of variables.
372 Do the same for the queue-runner and queue-list loops, for variables set
373 from spool message files. Do the same for the SMTP per-message loop, for
374 certain variables indirectly set in ACL operations.
375
376 JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
377 as a multi-recipient message from a mailinglist manager). The coding had
378 an arbitrary cutoff number of characters while checking for more input;
379 enforced by writing a NUL into the buffer. This corrupted long / fast
380 input. The problem was exposed more widely when more pipelineing of SMTP
381 responses was introduced, and one Exim system was feeding another.
382 The symptom is log complaints of SMTP syntax error (NUL chars) on the
383 receiving system, and refused recipients seen by the sending system
384 (propating to people being dropped from mailing lists).
385 Discovered and pinpointed by David Carter.
386
387 JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
388 replaced by the ${authresults } expansion.
389
390 JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
391
392 HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
393 allows proper process termination in container environments.
394
395 JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
396 Previously the "final dot" had a newline after it; ensure it is CR,LF.
397
398 JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
399 and "err_perm", deprecated since 4.83 when the RFC-defined words
400 "temperror" and "permerror" were introduced.
401
402 JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
403 transport-filters or DKIM-signing. The restriction was lost in the
404 consolidation of verify-callout and delivery SMTP handling.
405 Extend the restriction to also cover ARC-signing.
406
407 JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
408 in defer=pass mode supply a 450 to the initiator. Previously the message
409 would be spooled.
410
411 PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
412 tls_require_ciphers is used as before.
413
414 HS/03 Malware Avast: Better match the Avast multiline protocol. Add
415 "pass_unscanned". Only tmpfails from the scanner are written to
416 the paniclog, as they may require admin intervention (permission
417 denied, license issues). Other scanner errors (like decompression
418 bombs) do not cause a paniclog entry.
419
420 JH/36 Fix reinitialisation of DKIM logging variable between messages.
421 Previously it was possible to log spurious information in receive log
422 lines.
423
424 JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
425 triggered odd behaviour from Outlook Express clients.
426
427 PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
428 suffix list.
429
430 JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
431 since the IETF WG has not yet settled on that versus the original
432 "bare" representation.
433
434 JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
435 Previously the millisecond value corrupted the output.
436 Fix also for syslog_pid=no and log_selector +pid, for which the pid
437 corrupted the output.
438
439
440 Exim version 4.90
441 -----------------
442
443 JH/01 Rework error string handling in TLS interface so that the caller in
444 more cases is responsible for logging. This permits library-sourced
445 string to be attached to addresses during delivery, and collapses
446 pairs of long lines into single ones.
447
448 PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
449 during configuration. Wildcards are allowed and expanded.
450
451 JH/02 Rework error string handling in DKIM to pass more info back to callers.
452 This permits better logging.
453
454 JH/03 Rework the transport continued-connection mechanism: when TLS is active,
455 do not close it down and have the child transport start it up again on
456 the passed-on TCP connection. Instead, proxy the child (and any
457 subsequent ones) for TLS via a unix-domain socket channel. Logging is
458 affected: the continued delivery log lines do not have any DNSSEC, TLS
459 Certificate or OCSP information. TLS cipher information is still logged.
460
461 JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
462 identical IP addresses on different listening ports. Will also affect
463 "exiwhat" output.
464
465 PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
466 add noisy ifdef guards to special-case this sillyness.
467 Patch from Bernd Kuhls.
468
469 JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
470 than 255 are no longer allowed.
471
472 JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
473 Disable the session-cache too, which might reduce our load. Since we
474 currrectly use a new context for every connection, both as server and
475 client, there is no benefit for these.
476 GnuTLS appears to not support tickets server-side by default (we don't
477 call gnutls_session_ticket_enable_server()) but client side is enabled
478 by default on recent versions (3.1.3 +) unless the PFS priority string
479 is used (3.2.4 +).
480
481 PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
482 <https://reproducible-builds.org/specs/source-date-epoch/>.
483
484 JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
485 the check for any unsuccessful recipients did not notice the limit, and
486 erroneously found still-pending ones.
487
488 JH/08 Pipeline CHUNKING command and data together, on kernels that support
489 MSG_MORE. Only in-clear (not on TLS connections).
490
491 JH/09 Avoid using a temporary file during transport using dkim. Unless a
492 transport-filter is involved we can buffer the headers in memory for
493 creating the signature, and read the spool data file once for the
494 signature and again for transmission.
495
496 JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
497 4.77 as the kernel support then wasn't solid, having issues in 64bit
498 mode. Now, it's been long enough. Add support for FreeBSD also.
499
500 JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
501 case where the routing stage had gathered several addresses to send to
502 a host before calling the transport for the first, we previously failed
503 to close down TLS in the old transport process before passing the TCP
504 connection to the new process. The new one sent a STARTTLS command
505 which naturally failed, giving a failed delivery and bloating the retry
506 database. Investigation and fix prototype from Wolfgang Breyha.
507
508 JH/12 Fix check on SMTP command input synchronisation. Previously there were
509 false-negatives in the check that the sender had not preempted a response
510 or prompt from Exim (running as a server), due to that code's lack of
511 awareness of the SMTP input buffering.
512
513 PP/04 Add commandline_checks_require_admin option.
514 Exim drops privileges sanely, various checks such as -be aren't a
515 security problem, as long as you trust local users with access to their
516 own account. When invoked by services which pass untrusted data to
517 Exim, this might be an issue. Set this option in main configuration
518 AND make fixes to the calling application, such as using `--` to stop
519 processing options.
520
521 JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
522 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
523 responses to those, into a single TLS record each way (this usually means
524 a single packet). As a side issue, smtp_enforce_sync now works on TLS
525 connections.
526
527 PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
528 affects you only if you're dancing at the edge of the param size limits.
529 If you are, and this message makes sense to you, then: raise the
530 configured limit or use OpenSSL 1.1. Nothing we can do for older
531 versions.
532
533 JH/14 For the "sock" variant of the malware scanner interface, accept an empty
534 cmdline element to get the documented default one. Previously it was
535 inaccessible.
536
537 JH/15 Fix a crash in the smtp transport caused when two hosts in succession
538 are unsuable for non-message-specific reasons - eg. connection timeout,
539 banner-time rejection.
540
541 JH/16 Fix logging of delivery remote port, when specified by router, under
542 callout/hold.
543
544 PP/06 Repair manualroute's ability to take options in any order, even if one
545 is the name of a transport.
546 Fixes bug 2140.
547
548 HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
549
550 JH/17 Change the list-building routines interface to use the expanding-string
551 triplet model, for better allocation and copying behaviour.
552
553 JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
554 Previously it was constructed the first time a possibly-matching string
555 was met in the configuration file input during startup; now it is done
556 during compilation.
557
558 JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
559 compatible one, to avoid the (poorly documented) possibility of a config
560 file in the working directory redirecting the DB files, possibly correpting
561 some existing file. CVE-2017-10140 assigned for BDB.
562
563 JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
564 cache-hot. Previously, although the result was properly cached, the
565 initial verify call returned a defer.
566
567 JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
568 the main verify for receipient in uncached-mode.
569
570 JH/22 Retire historical build files to an "unsupported" subdir. These are
571 defined as "ones for which we have no current evidence of testing".
572
573 JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
574 if present. Previously it was ignored.
575
576 JH/24 Start using specified-initialisers in C structure init coding. This is
577 a C99 feature (it's 2017, so now considered safe).
578
579 JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
580 if was a fixed-sized field and bitmask ops via macros; it is now more
581 extensible.
582
583 PP/07 GitHub PR 56: Apply MariaDB build fix.
584 Patch provided by Jaroslav Škarvada.
585
586 PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
587 during Coverity cleanups [4.87 JH/47]
588 Diagnosis and fix provided by Michael Fischer v. Mollard.
589
590 JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
591 the right size to place the terminating semicolon on its own folded
592 line, the header hash was calculated to an incorrect value thanks to
593 the (relaxed) space the fold became.
594
595 HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
596 and confused the parent.
597
598 JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
599 which could crash as a result. This could lead to undeliverable messages.
600
601 JH/28 Logging: "next input sent too soon" now shows where input was truncated
602 for log purposes.
603
604 JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
605 matters on fast-turnover and PID-randomising systems, which were getting
606 out-of-order delivery.
607
608 JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
609 a possibly-overlapping copy. The symptom was that "Remote host closed
610 connection in response to HELO" was logged instead of the actual 4xx
611 error for the HELO.
612
613 JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
614 Previously only that bufferd was discarded, resulting in SYMTP command
615 desynchronisation.
616
617 JH/32 DKIM: when a message has multiple signatures matching an identity given
618 in dkim_verify_signers, run the dkim acl once for each. Previously only
619 one run was done. Bug 2189.
620
621 JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
622 "panic the current process" to "deliberately defer". The panic log is
623 still written with the problem list name; the mail and reject logs now
624 get a temp-reject line for the message that was being handled, saying
625 something like "domains check lookup or other defer". The SMTP 451
626 message is still "Temporary local problem".
627
628 JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
629 A crafted sequence of BDAT commands could result in in-use memory beeing
630 freed. CVE-2017-16943.
631
632 HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
633 from SMTP input. Previously it was always done; now only done for DATA
634 and not BDAT commands. CVE-2017-16944.
635
636 JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
637 to the message (such as an overlong header line). Previously this was
638 not done and we did not exit BDAT mode. Followon from the previous item
639 though a different problem.
640
641
642 Exim version 4.89
643 -----------------
644
645 JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
646 than -2003 did; needs libidn2 in addition to libidn.
647
648 JH/02 The path option on a pipe transport is now expanded before use.
649
650 PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
651 Patch provided by "Björn", documentation fix added too.
652
653 JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
654 missing a wire-to-host endian conversion.
655
656 JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
657 close after a BDAT command line could be taken as a following command,
658 giving a synch failure. Fix by only checking for synch immediately
659 before acknowledging the chunk.
660
661 PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
662 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
663 macro. Patches provided by Josh Soref.
664
665 JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
666 Previously we did not; the RFC seems ambiguous and VRFY is not listed
667 by IANA as a service extension. However, John Klensin suggests that we
668 should.
669
670 JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
671 the dkim code may be unix-mode line endings rather than smtp wire-format
672 CRLF, so prepend a CR to any bare LF.
673
674 JH/07 Rationalise the coding for callout smtp conversations and transport ones.
675 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
676
677 JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
678 the first were themselves being wrongly included in the feed into dkim
679 processing; with most chunk sizes in use this resulted in an incorrect
680 body hash calculated value.
681
682 JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
683 DKIM signature block, for verification. Although advised against by
684 standards it is specifically not ruled illegal.
685
686 JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
687
688 JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
689 missing a body hash (the bh= tag).
690
691 JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
692 It seems that HAProxy sends the Proxy Protocol information in clear and
693 only then does a TLS startup, so do the same.
694
695 JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
696 TCP connections (such as for Spamd) unless the daemon successfully set
697 Fast Open mode on its listening sockets. This fixes breakage seen on
698 too-old kernels or those not configured for Fast Open, at the cost of
699 requiring both directions being enabled for TFO, and TFO never being used
700 by non-daemon-related Exim processes.
701
702 JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
703 endings, at least on the first header line. Try to canonify any that get
704 past that check, despite the cost.
705
706 JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
707 now limited to an arbitrary five deep, while parsing addresses with the
708 strip_excess_angle_brackets option enabled.
709
710 PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
711 instead leave the unprompted TLS handshake in socket buffer for the
712 TLS library to consume.
713
714 PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
715
716 PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
717
718 JH/16 Drop variables when they go out of scope. Memory management drops a whole
719 region in one operation, for speed, and this leaves assigned pointers
720 dangling. Add checks run only under the testsuite which checks all
721 variables at a store-reset and panics on a dangling pointer; add code
722 explicitly nulling out all the variables discovered. Fixes one known
723 bug: a transport crash, where a dangling pointer for $sending_ip_address
724 originally assigned in a verify callout, is re-used.
725
726 PP/06 Drop '.' from @INC in various Perl scripts.
727
728 PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
729
730 PP/08 Reduce a number of compilation warnings under clang; building with
731 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
732 should be warning-free.
733
734 JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
735
736 HS/01 Fix portability problems introduced by PP/08 for platforms where
737 realloc(NULL) is not equivalent to malloc() [SunOS et al].
738
739 HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
740 chunk. This allows us to accept broken chunked messages. We need a more
741 general solution here.
742
743 PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
744 already-broken messages in the queue.
745
746 JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
747
748 JH/19 Fix reference counting bug in routing-generated-address tracking.
749
750
751 Exim version 4.88
752 -----------------
753
754 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
755 supports it and a size is available (ie. the sending peer gave us one).
756
757 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
758 years of being deprecated). The replacements are the ACLs
759 acl_smtp_mime and acl_not_smtp_mime.
760
761 JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
762 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
763 or even an in-clear connection were permitted. Now, if the host lookup
764 was dnssec and dane was requested then the host is only used if the
765 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
766 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
767 if one fails this test.
768 This means that a poorly-configured remote DNS will make it incommunicado;
769 but it protects against a DNS-interception attack on it.
770
771 JH/04 Bug 1810: make continued-use of an open smtp transport connection
772 non-noisy when a race steals the message being considered.
773
774 JH/05 If main configuration option tls_certificate is unset, generate a
775 self-signed certificate for inbound TLS connections.
776
777 JH/06 Bug 165: hide more cases of password exposure - this time in expansions
778 in rewrites and routers.
779
780 JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
781 and logged a warning sing 4.83; now they are a configuration file error.
782
783 JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
784 (lacking @domain). Apply the same qualification processing as RCPT.
785
786 JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
787
788 JH/10 Support ${sha256:} applied to a string (as well as the previous
789 certificate).
790
791 JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
792 a cutthrough deliver is pending, as we always want to make a connection.
793 This also avoids re-routing the message when later placing the cutthrough
794 connection after a verify cache hit.
795 Do not update it with the verify result either.
796
797 JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
798 when routing results in more than one destination address.
799
800 JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
801 signing (which inhibits the cutthrough capability). Previously only
802 the presence of an option was tested; now an expansion evaluating as
803 empty is permissible (obviously it should depend only on data available
804 when the cutthrough connection is made).
805
806 JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
807 the relevant preceding SMTP command did not note the pipelining mode.
808
809 JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
810 Previously they were not counted.
811
812 JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
813 as one having no matching records. Previously we deferred the message
814 that needed the lookup.
815
816 JH/17 Fakereject: previously logged as a normal message arrival "<="; now
817 distinguished as "(=".
818
819 JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
820 for missing MX records. Previously it only worked for missing A records.
821
822 JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
823
824 JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
825 after the data-go-ahead and data-ack. Patch from Jason Betts.
826
827 JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
828 even for a "none" policy. Patch from Tony Meyer.
829
830 JH/22 Fix continued use of a connection for further deliveries. If a port was
831 specified by a router, it must also match for the delivery to be
832 compatible.
833
834 JH/23 Bug 1874: fix continued use of a connection for further deliveries.
835 When one of the recipients of a message was unsuitable for the connection
836 (has no matching addresses), we lost track of needing to mark it
837 deferred. As a result mail would be lost.
838
839 JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
840
841 JH/25 Decoding ACL controls is now done using a binary search; the source code
842 takes up less space and should be simpler to maintain. Merge the ACL
843 condition decode tables also, with similar effect.
844
845 JH/26 Fix problem with one_time used on a redirect router which returned the
846 parent address unchanged. A retry would see the parent address marked as
847 delivered, so not attempt the (identical) child. As a result mail would
848 be lost.
849
850 JH/27 Fix a possible security hole, wherein a process operating with the Exim
851 UID can gain a root shell. Credit to http://www.halfdog.net/ for
852 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
853 itself :(
854
855 JH/28 Enable {spool,log} filesystem space and inode checks as default.
856 Main config options check_{log,spool}_{inodes,space} are now
857 100 inodes, 10MB unless set otherwise in the configuration.
858
859 JH/29 Fix the connection_reject log selector to apply to the connect ACL.
860 Previously it only applied to the main-section connection policy
861 options.
862
863 JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
864
865 PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
866 by me. Added RFC7919 DH primes as an alternative.
867
868 PP/02 Unbreak build via pkg-config with new hash support when crypto headers
869 are not in the system include path.
870
871 JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
872 GnuTLS, when a session startup failed (eg because the client disconnected)
873 Exim did stdio operations after fclose. This was exposed by a recent
874 change which nulled out the file handle after the fclose.
875
876 JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
877 signed directly by the cert-signing cert, rather than an intermediate
878 OCSP-signing cert. This is the model used by LetsEncrypt.
879
880 JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
881
882 HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
883 an incoming connection.
884
885 HS/02 Bug 1802: Do not half-close the connection after sending a request
886 to rspamd.
887
888 HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
889 fallback to "prime256v1".
890
891 JH/34 SECURITY: Use proper copy of DATA command in error message.
892 Could leak key material. Remotely exploitable. CVE-2016-9963.
893
894
895 Exim version 4.87
896 -----------------
897
898 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
899 and 3.4.4 - once the server is enabled to respond to an OCSP request
900 it does even when not requested, resulting in a stapling non-aware
901 client dropping the TLS connection.
902
903 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
904 support variable-length bit vectors. No functional change.
905
906 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
907 The I= interface field on outgoing lines is now after the H= remote
908 host field, same as incoming lines. There is a separate
909 outgoing_interface log selector which allows you to disable the
910 outgoing I= field.
911
912 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
913 If not running log_selector +smtp_connection the mainlog would be held
914 open indefinitely after a "too many connections" event, including to a
915 deleted file after a log rotate. Leave the per net connection logging
916 leaving it open for efficiency as that will be quickly detected by the
917 check on the next write.
918
919 HS/01 Bug 1671: Fix post transport crash.
920 Processing the wait-<transport> messages could crash the delivery
921 process if the message IDs didn't exist for some reason. When
922 using 'split_spool_directory=yes' the construction of the spool
923 file name failed already, exposing the same netto behaviour.
924
925 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
926 mime_regex ACL conditions.
927
928 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
929 to DSN fail messages (bounces): remote IP, remote greeting, remote response
930 to HELO, local diagnostic string.
931
932 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
933 log line to debug. Even when configured with a tls authenticator many
934 client connections are expected to not authenticate in this way, so
935 an authenticate fail is not an error.
936
937 HS/02 Add the Exim version string to the process info. This way exiwhat
938 gives some more detail about the running daemon.
939
940 JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
941 matter for fast-change records such as DNSBLs.
942
943 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
944 retry record, even if constant. There may be multiple transports with
945 different interface settings and the retry behaviour needs to be kept
946 distinct.
947
948 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
949
950 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
951
952 JH/10 Bug 840: fix log_defer_output option of pipe transport
953
954 JH/11 Bug 830: use same host for all RCPTS of a message, even under
955 hosts_randomize. This matters a lot when combined with mua_wrapper.
956
957 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
958 ${quote_pgsql:<string>} operator.
959
960 JH/13 Bug 1708: avoid misaligned access in cached lookup.
961
962 JH/14 Change header file name for freeradius-client. Relevant if compiling
963 with Radius support; from the Gentoo tree and checked under Fedora.
964
965 JH/15 Bug 1712: Introduce $prdr_requested flag variable
966
967 JH/16 Bug 1714: Permit an empty string as expansion result for transport
968 option transport_filter, meaning no filtering.
969
970 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
971
972 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
973 defaults to "*" (all hosts). The variable is now available when not built
974 with TLS, default unset, mainly to enable keeping the testsuite sane.
975 If a server certificate is not supplied (via tls_certificate) an error is
976 logged, and clients will find TLS connections fail on startup. Presumably
977 they will retry in-clear.
978 Packagers of Exim are strongly encouraged to create a server certificate
979 at installation time.
980
981 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
982 with the $config_file variable.
983
984 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
985 in transport context, after the attempt, and per-recipient. The latter type
986 is per host attempted. The event data is the error message, and the errno
987 information encodes the lookup type (A vs. MX) used for the (first) host,
988 and the trailing two digits of the smtp 4xx response.
989
990 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
991 to write to mainlog (or rejectlog, paniclog) in the window between file
992 creation and permissions/ownership being changed. Particularly affects
993 installations where exicyclog is run as root, rather than exim user;
994 result is that the running daemon panics and dies.
995
996 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
997
998 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
999 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
1000 "pri" and "weight". Note that the previous implicit priority given by the
1001 list order is no longer honoured.
1002
1003 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
1004 for DKIM processing.
1005
1006 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
1007 by defining SUPPORT_SOCKS.
1008
1009 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
1010 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
1011 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
1012 variables are renamed to proxy_{local,external}_{address,port}.
1013
1014 JH/27 Move Internationalisation support from Experimental to mainline, enabled
1015 for a build by defining SUPPORT_I18N
1016
1017 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
1018 of the query string, and make ${quote_redis:} do that quoting.
1019
1020 JH/29 Move Events support from Experimental to mainline, enabled by default
1021 and removable for a build by defining DISABLE_EVENT.
1022
1023 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
1024
1025 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
1026 cached by the daemon.
1027
1028 JH/32 Move Redis support from Experimental to mainline, enabled for a build
1029 by defining LOOKUP_REDIS. The libhiredis library is required.
1030
1031 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
1032 keys are given for lookup.
1033
1034 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
1035 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
1036 only supported when built with TLS support. The PolarSSL SHA routines
1037 are still used when the TLS library is too old for convenient support.
1038
1039 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
1040 openssl_options), for security. OpenSSL forces this from version 1.1.0
1041 server-side so match that on older versions.
1042
1043 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
1044 allocation for $value could be released as the expansion processing
1045 concluded, but leaving the global pointer active for it.
1046
1047 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
1048 and to use the domains and local_parts ACL conditions.
1049
1050 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
1051 incorrectly not doubled on cutthrough transmission, hence seen as a
1052 body-termination at the receiving system - resulting in truncated mails.
1053 Commonly the sender saw a TCP-level error, and retransmitted the message
1054 via the normal store-and-forward channel. This could result in duplicates
1055 received - but deduplicating mailstores were liable to retain only the
1056 initial truncated version.
1057
1058 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
1059
1060 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1061
1062 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1063 we're in there, support oversigning also; bug 1309.
1064
1065 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1066
1067 HS/04 Add support for keep_environment and add_environment options.
1068
1069 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1070 either intentional arithmetic overflow during PRNG, or testing config-
1071 induced overflows.
1072
1073 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1074 delivery resulted in actual delivery. Cancel cutthrough before DATA
1075 stage.
1076
1077 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1078 rejects a recipient: pass the reject to the originator.
1079
1080 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1081 Many were false-positives and ignorable, but it's worth fixing the
1082 former class.
1083
1084 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1085 for the new environment-manipulation done at startup. Move the routines
1086 from being local to tls.c to being global via the os.c file.
1087
1088 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1089 an extract embedded as result-arg for a map, the first arg for extract
1090 is unavailable so we cannot tell if this is a numbered or keyed
1091 extraction. Accept either.
1092
1093
1094 Exim version 4.86
1095 -----------------
1096
1097 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1098 expanded.
1099
1100 JH/02 The smtp transport option "multi_domain" is now expanded.
1101
1102 JH/03 The smtp transport now requests PRDR by default, if the server offers
1103 it.
1104
1105 JH/04 Certificate name checking on server certificates, when exim is a client,
1106 is now done by default. The transport option tls_verify_cert_hostnames
1107 can be used to disable this per-host. The build option
1108 EXPERIMENTAL_CERTNAMES is withdrawn.
1109
1110 JH/05 The value of the tls_verify_certificates smtp transport and main options
1111 default to the word "system" to access the system default CA bundle.
1112 For GnuTLS, only version 3.0.20 or later.
1113
1114 JH/06 Verification of the server certificate for a TLS connection is now tried
1115 (but not required) by default. The verification status is now logged by
1116 default, for both outbound TLS and client-certificate supplying inbound
1117 TLS connections
1118
1119 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1120 sites use this now.
1121
1122 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1123 Status Notification (bounce) messages are now MIME format per RFC 3464.
1124 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1125 under the control of the dsn_advertise_hosts option, and routers may
1126 have a dsn_lasthop option.
1127
1128 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1129 default, modifiable by a malware= option. The list separator for
1130 the options can now be changed in the usual way. Bug 68.
1131
1132 JH/10 The smtp_receive_timeout main option is now expanded before use.
1133
1134 JH/11 The incoming_interface log option now also enables logging of the
1135 local interface on delivery outgoing connections.
1136
1137 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1138 if the interface and destination host and port all match.
1139
1140 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1141 /defer_ok option.
1142
1143 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1144 Patch from Andrew Lewis.
1145
1146 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
1147 now supports optional time-restrictions, weighting, and priority
1148 modifiers per server. Patch originally by <rommer@active.by>.
1149
1150 JH/16 The spamd_address main option now supports a mixed list of local
1151 and remote servers. Remote servers can be IPv6 addresses, and
1152 specify a port-range.
1153
1154 JH/17 Bug 68: The spamd_address main option now supports an optional
1155 timeout value per server.
1156
1157 JH/18 Bug 1581: Router and transport options headers_add/remove can
1158 now have the list separator specified.
1159
1160 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
1161 option values.
1162
1163 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
1164 under OpenSSL.
1165
1166 JH/21 Support for the A6 type of dns record is withdrawn.
1167
1168 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1169 rather than the verbs used.
1170
1171 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1172 from 255 to 1024 chars.
1173
1174 JH/24 Verification callouts now attempt to use TLS by default.
1175
1176 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
1177 are generic router options now. The defaults didn't change.
1178
1179 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1180 Original patch from Alexander Shikoff, worked over by JH.
1181
1182 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1183 files if ZCAT_COMMAND is not executable.
1184
1185 JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
1186
1187 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1188
1189 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1190 Normally benign, it bites when the pair was led to by a CNAME;
1191 modern usage is to not canonicalize the domain to a CNAME target
1192 (and we were inconsistent anyway for A-only vs AAAA+A).
1193
1194 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1195
1196 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1197 when evaluating $sender_host_dnssec.
1198
1199 JH/31 Check the HELO verification lookup for DNSSEC, adding new
1200 $sender_helo_dnssec variable.
1201
1202 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1203
1204 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1205
1206 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1207
1208 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1209 documented as working, but never had. Support all but $spam_report.
1210
1211 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1212 added for tls authenticator.
1213
1214 HS/03 Add perl_taintmode main config option
1215
1216
1217 Exim version 4.85
1218 -----------------
1219
1220 TL/01 When running the test suite, the README says that variables such as
1221 no_msglog_check are global and can be placed anywhere in a specific
1222 test's script, however it was observed that placement needed to be near
1223 the beginning for it to behave that way. Changed the runtest perl
1224 script to read through the entire script once to detect and set these
1225 variables, reset to the beginning of the script, and then run through
1226 the script parsing/test process like normal.
1227
1228 TL/02 The BSD's have an arc4random API. One of the functions to induce
1229 adding randomness was arc4random_stir(), but it has been removed in
1230 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1231 function when detected.
1232
1233 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1234 cause callback expansion.
1235
1236 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1237 syntax errors in an expansion can be treated as a string instead of
1238 logging or causing an error, due to the internal use of bool_lax
1239 instead of bool when processing it.
1240
1241 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
1242 server certificates when making smtp deliveries.
1243
1244 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1245
1246 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1247
1248 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1249
1250 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1251 Merged patch from Sebastian Wiedenroth.
1252
1253 JH/05 Fix results-pipe from transport process. Several recipients, combined
1254 with certificate use, exposed issues where response data items split
1255 over buffer boundaries were not parsed properly. This eventually
1256 resulted in duplicates being sent. This issue only became common enough
1257 to notice due to the introduction of connection certificate information,
1258 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1259
1260 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1261 size buffer was used, resulting in syntax errors when an expansion
1262 exceeded it.
1263
1264 JH/07 Add support for directories of certificates when compiled with a GnuTLS
1265 version 3.3.6 or later.
1266
1267 JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
1268 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1269 both become "event_action", the variables become $event_name, $event_data
1270 and $event_defer_errno. There is a new variable $verify_mode, usable in
1271 routers, transports and related events. The tls:cert event is now also
1272 raised for inbound connections, if the main configuration event_action
1273 option is defined.
1274
1275 TL/06 In test suite, disable OCSP for old versions of openssl which contained
1276 early OCSP support, but no stapling (appears to be less than 1.0.0).
1277
1278 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1279 server certificate names available under the smtp transport option
1280 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1281 matches.
1282
1283 JH/10 Time-related extraction expansions from certificates now use the main
1284 option "timezone" setting for output formatting, and are consistent
1285 between OpenSSL and GnuTLS compilations. Bug 1541.
1286
1287 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1288 encoded parameter in the incoming message. Bug 1558.
1289
1290 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1291 include certificate info, eximon was claiming there were spoolfile
1292 syntax errors.
1293
1294 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
1295
1296 JH/14 Log delivery-related information more consistently, using the sequence
1297 "H=<name> [<ip>]" wherever possible.
1298
1299 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1300 are problematic for Debian distribution, omit them from the release
1301 tarball.
1302
1303 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1304
1305 JH/16 Fix string representation of time values on 64bit time_t architectures.
1306 Bug 1561.
1307
1308 JH/17 Fix a null-indirection in certextract expansions when a nondefault
1309 output list separator was used.
1310
1311
1312 Exim version 4.84
1313 -----------------
1314 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1315 checkers that were complaining about end of non-void function with no
1316 return.
1317
1318 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
1319 This was a regression introduced in 4.83 by another bugfix.
1320
1321 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1322
1323 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
1324 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
1325
1326
1327 Exim version 4.83
1328 -----------------
1329
1330 TF/01 Correctly close the server side of TLS when forking for delivery.
1331
1332 When a message was received over SMTP with TLS, Exim failed to clear up
1333 the incoming connection properly after forking off the child process to
1334 deliver the message. In some situations the subsequent outgoing
1335 delivery connection happened to have the same fd number as the incoming
1336 connection previously had. Exim would try to use TLS and fail, logging
1337 a "Bad file descriptor" error.
1338
1339 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1340 utilities have not been installed.
1341
1342 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1343 temporary space as the ACL may create new global variables.
1344
1345 TL/01 LDAP support uses per connection or global context settings, depending
1346 upon the detected version of the libraries at build time.
1347
1348 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1349 to extract and use the src ip:port in logging and expansions as if it
1350 were a direct connection from the outside internet. PPv2 support was
1351 updated based on HAProxy spec change in May 2014.
1352
1353 JH/02 Add ${listextract {number}{list}{success}{fail}}.
1354
1355 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1356 Properly escape header and check for NULL return.
1357
1358 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1359 not dns_use_dnssec.
1360
1361 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1362
1363 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1364 characters in header names, implemented as a verify condition.
1365 Contributed by Michael Fischer v. Mollard.
1366
1367 TL/05 Rename SPF condition results err_perm and err_temp to standardized
1368 results permerror and temperror. Previous values are deprecated but
1369 still accepted. In a future release, err_perm and err_temp will be
1370 completely removed, which will be a backward incompatibility if the
1371 ACL tests for either of these two old results. Patch contributed by
1372 user bes-internal on the mailing list.
1373
1374 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1375
1376 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1377 selectors, in both main and reject logs.
1378
1379 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1380 failed delivery.
1381
1382 JH/07 Add malware type "sock" for talking to simple daemon.
1383
1384 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
1385
1386 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1387 routers/transports under cutthrough routing.
1388
1389 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1390 numbers. Touch up "bool" conditional to keep the same definition.
1391
1392 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1393
1394 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1395
1396 JH/12 Expand items in router/transport headers_add or headers_remove lists
1397 individually rather than the list as a whole. Bug 1452.
1398
1399 Required for reasonable handling of multiple headers_ options when
1400 they may be empty; requires that headers_remove items with embedded
1401 colons must have them doubled (or the list-separator changed).
1402
1403 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1404 view the policy declared in the DMARC record. Currently, $dmarc_status
1405 is a combined value of both the record presence and the result of the
1406 analysis.
1407
1408 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1409
1410 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
1411 dnslookup router and the smtp transport (applying to the forward
1412 lookup).
1413
1414 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1415 of ldap servers used for a specific lookup. Patch provided by Heiko
1416 Schlichting.
1417
1418 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
1419 New variable $lookup_dnssec_authenticated for observability.
1420
1421 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1422 Patch submitted by Lars Timman.
1423
1424 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1425
1426 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1427 Requires trusted mode and valid format message id, aborts otherwise.
1428 Patch contributed by Heiko Schlichting.
1429
1430 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1431 certextract with support for various fields. Bug 1358.
1432
1433 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1434 is requested by default, modifiable by smtp transport option
1435 hosts_request_ocsp.
1436
1437 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
1438 operate on certificate variables to give certificate fingerprints
1439 Also new ${sha256:cert_variable}.
1440
1441 JH/23 The PRDR feature is moved from being Experimental into the mainline.
1442
1443 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1444 Christian Aistleitner.
1445
1446 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1447
1448 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1449 file. Patch from Wolfgang Breyha.
1450
1451 JH/25 Expand the coverage of the delivery $host and $host_address to
1452 client authenticators run in verify callout. Bug 1476.
1453
1454 JH/26 Port service names are now accepted for tls_on_connect_ports, to
1455 align with daemon_smtp_ports. Bug 72.
1456
1457 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1458 support and error reporting did not work properly.
1459
1460 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1461 and is readable. Patch from Andrew Colin Kissa.
1462
1463 TL/14 Enhance documentation of ${run expansion and how it parses the
1464 commandline after expansion, particularly in the case when an
1465 unquoted variable expansion results in an empty value.
1466
1467 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1468
1469 PP/02 Fix internal collision of T_APL on systems which support RFC3123
1470 by renaming away from it. Addresses GH issue 15, reported by
1471 Jasper Wallace.
1472
1473 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1474
1475 TL/15 SECURITY: prevent double expansion in math comparison functions
1476 (can expand unsanitized data). Not remotely exploitable.
1477 CVE-2014-2972
1478
1479
1480 Exim version 4.82
1481 -----------------
1482
1483 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1484
1485 PP/02 Make -n do something, by making it not do something.
1486 When combined with -bP, the name of an option is not output.
1487
1488 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1489 by GnuTLS.
1490
1491 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1492 $sender_host_name and config options to manage this, and basic check
1493 routines.
1494
1495 PP/05 DSCP support for outbound connections and control modifier for inbound.
1496
1497 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
1498 (Only plugin which currently uses this is kerberos4, which nobody should
1499 be using, but we should make it available and other future plugins might
1500 conceivably use it, even though it would break NAT; stuff *should* be
1501 using channel bindings instead).
1502
1503 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
1504 name; added for Sendmail compatibility; requires admin caller.
1505 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1506 just ignore it); requires trusted caller.
1507 Also parse but ignore: -Ac -Am -X<logfile>
1508 Bugzilla 1117.
1509
1510 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
1511
1512 TL/02 Add +smtp_confirmation as a default logging option.
1513
1514 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1515 Patch by Magnus Holmgren from 2007-02-20.
1516
1517 TL/04 Bugzilla 1281 - Spec typo.
1518 Bugzilla 1283 - Spec typo.
1519 Bugzilla 1290 - Spec grammar fixes.
1520
1521 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
1522
1523 TL/06 Add Experimental DMARC support using libopendmarc libraries.
1524
1525 TL/07 Fix an out of order global option causing a segfault. Reported to dev
1526 mailing list by by Dmitry Isaikin.
1527
1528 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1529
1530 JH/02 Support "G" suffix to numbers in ${if comparisons.
1531
1532 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1533
1534 NM/01 Bugzilla 1197 - Spec typo
1535 Bugzilla 1196 - Spec examples corrections
1536
1537 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
1538
1539 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1540 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1541 function.
1542
1543 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1544 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1545
1546 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1547 "acl {{name}{arg}...}", and optional args on acl condition
1548 "acl = name arg..."
1549
1550 JH/05 Permit multiple router/transport headers_add/remove lines.
1551
1552 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1553
1554 JH/07 Avoid using a waiting database for a single-message-only transport.
1555 Performance patch from Paul Fisher. Bugzilla 1262.
1556
1557 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1558 Bugzilla 884.
1559
1560 JH/09 Add $headers_added variable, with content from use of ACL modifier
1561 add_header (but not yet added to the message). Bugzilla 199.
1562
1563 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1564 Pulled from Bugzilla 817 by Wolfgang Breyha.
1565
1566 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1567 CVE-2012-5671
1568 (nb: this is the same fix as in Exim 4.80.1)
1569
1570 JH/11 Add A= logging on delivery lines, and a client_set_id option on
1571 authenticators.
1572
1573 JH/12 Add optional authenticated_sender logging to A= and a log_selector
1574 for control.
1575
1576 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1577
1578 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1579 advertise SMTP AUTH mechanism to us, instead of a generic
1580 protocol violation error. Also, make Exim more robust to bad
1581 data from the Dovecot auth socket.
1582
1583 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1584
1585 When a queue runner is handling a message, Exim first routes the
1586 recipient addresses, during which it prunes them based on the retry
1587 hints database. After that it attempts to deliver the message to
1588 any remaining recipients. It then updates the hints database using
1589 the retry rules.
1590
1591 So if a recipient address works intermittently, it can get repeatedly
1592 deferred at routing time. The retry hints record remains fresh so the
1593 address never reaches the final cutoff time.
1594
1595 This is a fairly common occurrence when a user is bumping up against
1596 their storage quota. Exim had some logic in its local delivery code
1597 to deal with this. However it did not apply to per-recipient defers
1598 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1599
1600 This change adds a proper retry rule check during routing so that the
1601 final cutoff time is checked against the message's age. We only do
1602 this check if there is an address retry record and there is not a
1603 domain retry record; this implies that previous attempts to handle
1604 the address had the retry_use_local_parts option turned on. We use
1605 this as an approximation for the destination being like a local
1606 delivery, as in LMTP.
1607
1608 I suspect this new check makes the old local delivery cutoff check
1609 redundant, but I have not verified this so I left the code in place.
1610
1611 TF/02 Correct gecos expansion when From: is a prefix of the username.
1612
1613 Test 0254 submits a message to Exim with the header
1614
1615 Resent-From: f
1616
1617 When I ran the test suite under the user fanf2, Exim expanded
1618 the header to contain my full name, whereas it should have added
1619 a Resent-Sender: header. It erroneously treats any prefix of the
1620 username as equal to the username.
1621
1622 This change corrects that bug.
1623
1624 GF/01 DCC debug and logging tidyup
1625 Error conditions log to paniclog rather than rejectlog.
1626 Debug lines prefixed by "DCC: " to remove any ambiguity.
1627
1628 TF/03 Avoid unnecessary rebuilds of lookup-related code.
1629
1630 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1631 Bug spotted by Jeremy Harris; was flawed since initial commit.
1632 Would have resulted in OCSP responses post-SNI triggering an Exim
1633 NULL dereference and crash.
1634
1635 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1636
1637 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1638 Bug detection, analysis and fix by Samuel Thibault.
1639 Bugzilla 1331, Debian bug #698092.
1640
1641 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1642
1643 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1644 Server implementation by Todd Lyons, client by JH.
1645 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1646 config variable "prdr_enable" controls whether the server
1647 advertises the facility. If the client requests PRDR a new
1648 acl_data_smtp_prdr ACL is called once for each recipient, after
1649 the body content is received and before the acl_smtp_data ACL.
1650 The client is controlled by both of: a hosts_try_prdr option
1651 on the smtp transport, and the server advertisement.
1652 Default client logging of deliveries and rejections involving
1653 PRDR are flagged with the string "PRDR".
1654
1655 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1656 fclose(). Diagnosis by Todd Lyons.
1657
1658 PP/17 Update configure.default to handle IPv6 localhost better.
1659 Patch by Alain Williams (plus minor tweaks).
1660 Bugzilla 880.
1661
1662 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1663 This is now consistent with GnuTLS, and is now documented: the
1664 previous undocumented portable approach to treating the option as
1665 unset was to force an expansion failure. That still works, and
1666 an empty string is now equivalent.
1667
1668 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1669 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1670 not performing validation itself.
1671
1672 PP/20 Added force_command boolean option to pipe transport.
1673 Patch from Nick Koston, of cPanel Inc.
1674
1675 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1676 Bugzilla 321, 823.
1677
1678 TF/04 Added udpsend ACL modifier and hexquote expansion operator
1679
1680 PP/21 Fix eximon continuous updating with timestamped log-files.
1681 Broken in a format-string cleanup in 4.80, missed when I repaired the
1682 other false fix of the same issue.
1683 Report and fix from Heiko Schlichting.
1684 Bugzilla 1363.
1685
1686 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1687 Report from Prashanth Katuri.
1688
1689 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1690 It's SecureTransport, so affects any MacOS clients which use the
1691 system-integrated TLS libraries, including email clients.
1692
1693 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1694 using a MIME ACL for non-SMTP local injection.
1695 Report and assistance in diagnosis by Warren Baker.
1696
1697 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1698
1699 JH/16 Fix comparisons for 64b. Bugzilla 1385.
1700
1701 TL/09 Add expansion variable $authenticated_fail_id to keep track of
1702 last id that failed so it may be referenced in subsequent ACL's.
1703
1704 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1705 Alexander Miroch.
1706
1707 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1708 ldap library initialization, allowing self-signed CA's to be
1709 used. Also properly sets require_cert option later in code by
1710 using NULL (global ldap config) instead of ldap handle (per
1711 session). Bug diagnosis and testing by alxgomz.
1712
1713 TL/12 Enhanced documentation in the ratelimit.pl script provided in
1714 the src/util/ subdirectory.
1715
1716 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1717 renamed to Transport Post Delivery Action by Jeremy Harris, as
1718 EXPERIMENTAL_TPDA.
1719
1720 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1721 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1722 redis_servers = needs to be configured which will be used by the redis
1723 lookup. Patch from Warren Baker, of The Packet Hub.
1724
1725 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1726
1727 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1728 hostname or reverse DNS when processing a host list. Used suggestions
1729 from multiple comments on this bug.
1730
1731 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1732
1733 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1734 Missed a few lines, added it to make the runtest require no keyboard
1735 interaction.
1736
1737 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1738 contains upper case chars. Make router use caseful_local_part.
1739
1740 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1741 support when GnuTLS has been built with p11-kit.
1742
1743
1744 Exim version 4.80.1
1745 -------------------
1746
1747 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1748 CVE-2012-5671
1749 This, or similar/improved, will also be change PP/11 of 4.82.
1750
1751
1752 Exim version 4.80
1753 -----------------
1754
1755 PP/01 Handle short writes when writing local log-files.
1756 In practice, only affects FreeBSD (8 onwards).
1757 Bugzilla 1053, with thanks to Dmitry Isaikin.
1758
1759 NM/01 Bugzilla 949 - Documentation tweak
1760
1761 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1762 improved.
1763
1764 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1765
1766 PP/02 Implemented gsasl authenticator.
1767
1768 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1769
1770 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1771 `pkg-config foo` for cflags/libs.
1772
1773 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1774 with rest of GSASL and with heimdal_gssapi.
1775
1776 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1777 `pkg-config foo` for cflags/libs for the TLS implementation.
1778
1779 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
1780 properties get this fed in as external SSF. A number of robustness
1781 and debugging improvements to the cyrus_sasl authenticator.
1782
1783 PP/08 cyrus_sasl server now expands the server_realm option.
1784
1785 PP/09 Bugzilla 1214 - Log authentication information in reject log.
1786 Patch by Jeremy Harris.
1787
1788 PP/10 Added dbmjz lookup type.
1789
1790 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
1791
1792 PP/12 MAIL args handles TAB as well as SP, for better interop with
1793 non-compliant senders.
1794 Analysis and variant patch by Todd Lyons.
1795
1796 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
1797 Bug report from Lars Müller <lars@samba.org> (via SUSE),
1798 Patch from Dirk Mueller <dmueller@suse.com>
1799
1800 PP/13 tls_peerdn now print-escaped for spool files.
1801 Observed some $tls_peerdn in wild which contained \n, which resulted
1802 in spool file corruption.
1803
1804 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1805 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1806 or write after TLS renegotiation, which otherwise led to messages
1807 "Got SSL error 2".
1808
1809 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1810 as a tracking header (ie: a signed header comes before the signature).
1811 Patch from Wolfgang Breyha.
1812
1813 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1814 comma-sep list; embedded commas doubled.
1815
1816 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1817
1818 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1819 diagnostics.
1820 Report and patch from Dmitry Banschikov.
1821
1822 PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
1823 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1824 failures. We appear to now support TLS1.1+ with Exim.
1825
1826 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1827 lets Exim select keys and certificates based upon TLS SNI from client.
1828 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1829 before an outbound SMTP session. New log_selector, +tls_sni.
1830
1831 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1832 NULL dereference. Report and patch from Alun Jones.
1833
1834 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1835 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1836 Not seeing resolver debug output on NetBSD, but suspect this is a
1837 resolver implementation change.
1838
1839 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1840 Left warnings. Added "eximon gdb" invocation mode.
1841
1842 PP/21 Defaulting "accept_8bitmime" to true, not false.
1843
1844 PP/22 Added -bw for inetd wait mode support.
1845
1846 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1847 locate the relevant includes and libraries. Made this the default.
1848
1849 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1850 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1851
1852 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
1853 This may cause build issues on older platforms.
1854
1855 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1856 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1857 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1858 Added SNI support via GnuTLS too.
1859 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
1860
1861 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
1862
1863 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
1864 Applied second patch from Janne, implementing suggestion to default
1865 multiple-strings-in-record handling to match SPF spec.
1866
1867 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
1868
1869 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1870 read-only, out of scope).
1871 Patch from Wolfgang Breyha, report from Stuart Northfield.
1872
1873 PP/29 Fix three issues highlighted by clang analyser static analysis.
1874 Only crash-plausible issue would require the Cambridge-specific
1875 iplookup router and a misconfiguration.
1876 Report from Marcin Mirosław.
1877
1878 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1879
1880 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1881 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1882 As part of this, removing so much warning spew let me fix some minor
1883 real issues in debug logging.
1884
1885 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1886 assignment on my part. Fixed.
1887
1888 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1889 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1890 Janne Snabb (who went above and beyond: thank you).
1891
1892 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1893 string otherwise requires a connection and a bunch more work and it's
1894 relatively easy to get wrong. Should also expose TLS library linkage
1895 problems.
1896
1897 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1898 64-bit ${eval} (JH/03).
1899
1900 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
1901 GNU libc to support some of the 64-bit stuff, should not lead to
1902 conflicts. Defined before os.h is pulled in, so if a given platform
1903 needs to override this, it can.
1904
1905 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1906 protection layer was required, which is not implemented.
1907 Bugzilla 1254, patch from Wolfgang Breyha.
1908
1909 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1910 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1911 tls_dhparam take prime identifiers. Also unbreak combination of
1912 OpenSSL+DH_params+TLSSNI.
1913
1914 PP/39 Disable SSLv2 by default in OpenSSL support.
1915
1916
1917 Exim version 4.77
1918 -----------------
1919
1920 PP/01 Solaris build fix for Oracle's LDAP libraries.
1921 Bugzilla 1109, patch from Stephen Usher.
1922
1923 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1924
1925 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1926 whitespace trailer
1927
1928 TF/02 Fix a couple more cases where we did not log the error message
1929 when unlink() failed. See also change 4.74-TF/03.
1930
1931 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1932 lock up or crash if it happened to be inside a call to libc when it
1933 got a SIGUSR1 from exiwhat.
1934
1935 The SIGUSR1 handler appends the current process status to the process
1936 log which is later printed by exiwhat. It used to use the general
1937 purpose logging code to do this, but several functions it calls are
1938 not safe for signals.
1939
1940 The new output code in the SIGUSR1 handler is specific to the process
1941 log, and simple enough that it's easy to inspect for signal safety.
1942 Removing some special cases also simplifies the general logging code.
1943 Removing the spurious timestamps from the process log simplifies
1944 exiwhat.
1945
1946 TF/04 Improved ratelimit ACL condition.
1947
1948 The /noupdate option has been deprecated in favour of /readonly which
1949 has clearer semantics. The /leaky, /strict, and /readonly update modes
1950 are mutually exclusive. The update mode is no longer included in the
1951 database key; it just determines when the database is updated. (This
1952 means that when you upgrade Exim will forget old rate measurements.)
1953
1954 Exim now checks that the per_* options are used with an update mode that
1955 makes sense for the current ACL. For example, when Exim is processing a
1956 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1957 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1958 must specify per_mail/readonly. If you omit the update mode it defaults to
1959 /leaky where that makes sense (as before) or /readonly where required.
1960
1961 The /noupdate option is now undocumented but still supported for
1962 backwards compatibility. It is equivalent to /readonly except that in
1963 ACLs where /readonly is required you may specify /leaky/noupdate or
1964 /strict/noupdate which are treated the same as /readonly.
1965
1966 A useful new feature is the /count= option. This is a generalization
1967 of the per_byte option, so that you can measure the throughput of other
1968 aggregate values. For example, the per_byte option is now equivalent
1969 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1970
1971 The per_rcpt option has been generalized using the /count= mechanism
1972 (though it's more complicated than the per_byte equivalence). When it is
1973 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1974 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1975 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1976 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1977 Note that using per_rcpt with a non-readonly update mode in more than
1978 one ACL will cause the recipients to be double-counted. (The per_mail
1979 and per_byte options don't have this problem.)
1980
1981 The handling of very low rates has changed slightly. If the computed rate
1982 is less than the event's count (usually one) then this event is the first
1983 after a long gap. In this case the rate is set to the same as this event's
1984 count, so that the first message of a spam run is counted properly.
1985
1986 The major new feature is a mechanism for counting the rate of unique
1987 events. The new per_addr option counts the number of different
1988 recipients that someone has sent messages to in the last time period. It
1989 behaves like per_rcpt if all the recipient addresses are different, but
1990 duplicate recipient addresses do not increase the measured rate. Like
1991 the /count= option this is a general mechanism, so the per_addr option
1992 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1993 example, measure the rate that a client uses different sender addresses
1994 with the options per_mail/unique=$sender_address. There are further
1995 details in the main documentation.
1996
1997 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1998
1999 TF/06 Removed a few PCRE remnants.
2000
2001 TF/07 Automatically extract Exim's version number from tags in the git
2002 repository when doing development or release builds.
2003
2004 PP/02 Raise smtp_cmd_buffer_size to 16kB.
2005 Bugzilla 879. Patch from Paul Fisher.
2006
2007 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
2008 Heavily based on revision 40f9a89a from Simon Arlott's tree.
2009 Bugzilla 97.
2010
2011 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
2012
2013 PP/05 Variable $av_failed, true if the AV scanner deferred.
2014 Bugzilla 1078. Patch from John Horne.
2015
2016 PP/06 Stop make process more reliably on build failure.
2017 Bugzilla 1087. Patch from Heiko Schlittermann.
2018
2019 PP/07 Make maildir_use_size_file an _expandable_ boolean.
2020 Bugzilla 1089. Patch from Heiko Schlittermann.
2021
2022 PP/08 Handle ${run} returning more data than OS pipe buffer size.
2023 Bugzilla 1131. Patch from Holger Weiß.
2024
2025 PP/09 Handle IPv6 addresses with SPF.
2026 Bugzilla 860. Patch from Wolfgang Breyha.
2027
2028 PP/10 GnuTLS: support TLS 1.2 & 1.1.
2029 Bugzilla 1156.
2030 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
2031 Bugzilla 1095.
2032
2033 PP/11 match_* no longer expand right-hand-side by default.
2034 New compile-time build option, EXPAND_LISTMATCH_RHS.
2035 New expansion conditions, "inlist", "inlisti".
2036
2037 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
2038
2039 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
2040
2041 PP/14 fix log_write() format string regression from TF/03.
2042 Bugzilla 1152. Patch from Dmitry Isaikin.
2043
2044
2045 Exim version 4.76
2046 -----------------
2047
2048 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
2049
2050 PP/02 Harmonised TLS library version reporting; only show if debugging.
2051 Layout now matches that introduced for other libraries in 4.74 PP/03.
2052
2053 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
2054
2055 PP/04 New "dns_use_edns0" global option.
2056
2057 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2058 Bugzilla 1098.
2059
2060 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2061 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
2062
2063 TK/01 Updated PolarSSL code to 0.14.2.
2064 Bugzilla 1097. Patch from Andreas Metzler.
2065
2066 PP/07 Catch divide-by-zero in ${eval:...}.
2067 Fixes bugzilla 1102.
2068
2069 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2070 Bugzilla 1104.
2071
2072 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
2073 format-string attack -- SECURITY: remote arbitrary code execution.
2074
2075 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2076 time unintentionally subject to list matching rules, letting the header
2077 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2078 arbitrary string expansion). This allowed for information disclosure.
2079
2080 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2081 INT_MIN/-1 -- value coerced to INT_MAX.
2082
2083
2084 Exim version 4.75
2085 -----------------
2086
2087 NM/01 Workaround for PCRE version dependency in version reporting
2088 Bugzilla 1073
2089
2090 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2091 This fixes portability to compilers other than gcc, notably
2092 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2093
2094 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2095 makefiles for portability to HP-UX and POSIX correctness.
2096
2097 PP/01 Permit LOOKUP_foo enabling on the make command-line.
2098 Also via indented variable definition in the Makefile.
2099 (Debugging by Oliver Heesakkers).
2100
2101 PP/02 Restore caching of spamd results with expanded spamd_address.
2102 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2103
2104 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2105 Improves build reliability. Fix from: Frank Elsner
2106
2107 NM/02 Fix wide character breakage in the rfc2047 coding
2108 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2109
2110 NM/03 Allow underscore in dnslist lookups
2111 Fixes bug 1026. Patch from Graeme Fowler
2112
2113 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2114 Code patches from Adam Ciarcinski of NetBSD.
2115
2116 NM/04 Fixed exiqgrep to cope with mailq missing size issue
2117 Fixes bug 943.
2118
2119 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2120 is logged, to avoid truncation. Patch from John Horne.
2121
2122 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2123 Patch from Jakob Hirsch.
2124
2125 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2126 SQL string expansion failure details.
2127 Patch from Andrey Oktyabrski.
2128
2129 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2130 Patch from Simon Arlott.
2131
2132 PP/09 New lookups functionality failed to compile on old gcc which rejects
2133 extern declarations in function scope.
2134 Patch from Oliver Fleischmann
2135
2136 PP/10 Use sig_atomic_t for flags set from signal handlers.
2137 Check getgroups() return and improve debugging.
2138 Fixed developed for diagnosis in bug 927 (which turned out to be
2139 a kernel bug).
2140
2141 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2142 Patch from Mark Zealey.
2143
2144 PP/12 Bugzilla 1056: Improved spamd server selection.
2145 Patch from Mark Zealey.
2146
2147 PP/13 Bugzilla 1086: Deal with maildir quota file races.
2148 Based on patch from Heiko Schlittermann.
2149
2150 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2151 Patch from Uwe Doering, sign-off by Michael Haardt.
2152
2153 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2154 variable declaration deep within a block. Bug and patch from
2155 Dennis Davis.
2156
2157 PP/15 lookups-Makefile IRIX compatibility coercion.
2158
2159 PP/16 Make DISABLE_DKIM build knob functional.
2160
2161 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2162 Patch by Simon Arlott
2163
2164 TF/03 Fix valgrind.h portability to C89 compilers that do not support
2165 variable argument macros. Our copy now differs from upstream.
2166
2167
2168 Exim version 4.74
2169 -----------------
2170
2171 TF/01 Failure to get a lock on a hints database can have serious
2172 consequences so log it to the panic log.
2173
2174 TF/02 Log LMTP confirmation messages in the same way as SMTP,
2175 controlled using the smtp_confirmation log selector.
2176
2177 TF/03 Include the error message when we fail to unlink a spool file.
2178
2179 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2180 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2181 for maintaining out-of-tree patches for some time.
2182
2183 PP/01 Bugzilla 139: Documentation and portability issues.
2184 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2185 Handle per-OS dynamic-module compilation flags.
2186
2187 PP/02 Let /dev/null have normal permissions.
2188 The 4.73 fixes were a little too stringent and complained about the
2189 permissions on /dev/null. Exempt it from some checks.
2190 Reported by Andreas M. Kirchwitz.
2191
2192 PP/03 Report version information for many libraries, including
2193 Exim version information for dynamically loaded libraries. Created
2194 version.h, now support a version extension string for distributors
2195 who patch heavily. Dynamic module ABI change.
2196
2197 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2198 privilege escalation vulnerability whereby the Exim run-time user
2199 can cause root to append content of the attacker's choosing to
2200 arbitrary files.
2201
2202 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2203 (Wolfgang Breyha)
2204
2205 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2206 If dropping privileges for untrusted macros, we disabled normal logging
2207 on the basis that it would fail; for the Exim run-time user, this is not
2208 the case, and it resulted in successful deliveries going unlogged.
2209 Fixed. Reported by Andreas Metzler.
2210
2211
2212 Exim version 4.73
2213 -----------------
2214
2215 PP/01 Date: & Message-Id: revert to normally being appended to a message,
2216 only prepend for the Resent-* case. Fixes regression introduced in
2217 Exim 4.70 by NM/22 for Bugzilla 607.
2218
2219 PP/02 Include check_rfc2047_length in configure.default because we're seeing
2220 increasing numbers of administrators be bitten by this.
2221
2222 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2223
2224 PP/03 Bugzilla 994: added openssl_options main configuration option.
2225
2226 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2227
2228 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
2229
2230 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2231
2232 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
2233 without a peer certificate, leading to a segfault because of an
2234 assumption that peers always have certificates. Be a little more
2235 paranoid. Problem reported by Martin Tscholak.
2236
2237 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2238 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2239 NB: ClamAV planning to remove STREAM in "middle of 2010".
2240 CL also introduces -bmalware, various -d+acl logging additions and
2241 more caution in buffer sizes.
2242
2243 PP/09 Implemented reverse_ip expansion operator.
2244
2245 PP/10 Bugzilla 937: provide a "debug" ACL control.
2246
2247 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2248
2249 PP/12 Bugzilla 973: Implement --version.
2250
2251 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2252
2253 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2254
2255 PP/15 Bugzilla 816: support multiple condition rules on Routers.
2256
2257 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
2258 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2259 ignore trailing whitespace.
2260
2261 JJ/02 prevent non-panic DKIM error from being sent to paniclog
2262
2263 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2264 "exim" to be used
2265
2266 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2267 Notification from Dr Andrew Aitchison.
2268
2269 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2270 ExtendedDetectionInfo response format.
2271 Notification from John Horne.
2272
2273 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2274 compatible.
2275
2276 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2277 XSL and documented dependency on system catalogs, with examples of how
2278 it normally works.
2279
2280 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2281 access.
2282
2283 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2284 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2285 configuration file which is writeable by the Exim user or group.
2286
2287 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2288 of configuration files to cover files specified with the -C option if
2289 they are going to be used with root privileges, not just the default
2290 configuration file.
2291
2292 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2293 option (effectively making it always true).
2294
2295 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2296 files to be used while preserving root privileges.
2297
2298 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2299 that rogue child processes cannot use them.
2300
2301 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2302 run-time user, instead of root.
2303
2304 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2305 Exim run-time user without dropping privileges.
2306
2307 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2308 result string, instead of calling string_vformat() twice with the same
2309 arguments.
2310
2311 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2312 for other users. Others should always drop root privileges if they use
2313 -C on the command line, even for a whitelisted configure file.
2314
2315 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2316
2317 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2318
2319
2320 Exim version 4.72
2321 -----------------
2322
2323 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2324 $data_path, and $header_path variables; fixed documentation bugs and
2325 typos
2326
2327 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2328 exipick to access non-standard spools, including the "frozen" queue
2329 (Finput)
2330
2331 NM/01 Bugzilla 965: Support mysql stored procedures.
2332 Patch from Alain Williams
2333
2334 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2335
2336 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2337 Patch from Andreas Metzler
2338
2339 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2340 Patch from Kirill Miazine
2341
2342 NM/05 Bugzilla 671: Added umask to procmail example.
2343
2344 JJ/03 installed exipick 20100323.0, fixing doc bug
2345
2346 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
2347 directory. Notification and patch from Dan Rosenberg.
2348
2349 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2350
2351 TK/02 Improve log output when DKIM signing operation fails.
2352
2353 MH/01 Treat the transport option dkim_domain as a colon separated
2354 list, not as a single string, and sign the message with each element,
2355 omitting multiple occurences of the same signer.
2356
2357 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2358 Bugzilla 985, 986. Patch by Simon Arlott
2359
2360 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
2361 Patch by Simon Arlott
2362
2363 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
2364 MBX locking. Notification from Dan Rosenberg.
2365
2366
2367 Exim version 4.71
2368 -----------------
2369
2370 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
2371
2372 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2373
2374 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2375
2376 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2377
2378 NM/04 Bugzilla 915: Flag broken perl installation during build.
2379
2380
2381 Exim version 4.70
2382 -----------------
2383
2384 TK/01 Added patch by Johannes Berg that expands the main option
2385 "spamd_address" if it starts with a dollar sign.
2386
2387 TK/02 Write list of recipients to X-Envelope-Sender header when building
2388 the mbox-format spool file for content scanning (suggested by Jakob
2389 Hirsch).
2390
2391 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2392 (http://www.dcc-servers.net/) support via dccifd. Activated by
2393 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
2394
2395 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2396 by Mark Daniel Reidel <mr@df.eu>.
2397
2398 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2399 When building exim an external PCRE library is now needed -
2400 PCRE is a system library on the majority of modern systems.
2401 See entry on PCRE_LIBS in EDITME file.
2402
2403 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2404 conversation. Added nologin parameter to request.
2405 Patch contributed by Kirill Miazine.
2406
2407 TF/01 Do not log submission mode rewrites if they do not change the address.
2408
2409 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2410
2411 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
2412 log files in place. Contributed by Roberto Lima.
2413
2414 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
2415
2416 TF/03 Bugzilla 615: When checking the local_parts router precondition
2417 after a local_part_suffix or local_part_prefix option, Exim now
2418 does not use the address's named list lookup cache, since this
2419 contains cached lookups for the whole local part.
2420
2421 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
2422 Robert Millan. Documentation is in experimental-spec.txt.
2423
2424 TF/04 Bugzilla 668: Fix parallel build (make -j).
2425
2426 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
2427
2428 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
2429 Patch provided by Jan Srzednicki.
2430
2431 TF/05 Leading white space used to be stripped from $spam_report which
2432 wrecked the formatting. Now it is preserved.
2433
2434 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2435 that they are available at delivery time.
2436
2437 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2438
2439 TF/08 TLS error reporting now respects the incoming_interface and
2440 incoming_port log selectors.
2441
2442 TF/09 Produce a more useful error message if an SMTP transport's hosts
2443 setting expands to an empty string.
2444
2445 NM/06 Bugzilla 744: EXPN did not work under TLS.
2446 Patch provided by Phil Pennock.
2447
2448 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
2449 Patch provided by Richard Godbee.
2450
2451 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
2452 acl_smtp_notquit, added index entry.
2453
2454 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2455 Patch provided by Eugene Bujak.
2456
2457 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2458 accept(). Patch provided by Maxim Dounin.
2459
2460 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
2461 Patch provided by Phil Pennock.
2462
2463 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2464
2465 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
2466 Patch provided by Brad "anomie" Jorsch.
2467
2468 NM/14 Bugzilla 622: Added timeout setting to transport filter.
2469 Patch provided by Dean Brooks.
2470
2471 TK/05 Add native DKIM support (does not depend on external libraries).
2472
2473 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
2474 Patch provided by Graeme Fowler.
2475
2476 NM/16 Bugzilla 851: Documentation example syntax fix.
2477
2478 NM/17 Changed NOTICE file to remove references to embedded PCRE.
2479
2480 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2481 lsearch.
2482
2483 NM/19 Bugzilla 745: TLS version reporting.
2484 Patch provided by Phil Pennock.
2485
2486 NM/20 Bugzilla 167: bool: condition support.
2487 Patch provided by Phil Pennock.
2488
2489 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2490 clients. Patch provided by Phil Pennock.
2491
2492 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2493 Patch provided by Brad "anomie" Jorsch.
2494
2495 NM/23 Bugzilla 687: Fix misparses in eximstats.
2496 Patch provided by Heiko Schlittermann.
2497
2498 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2499 Patch provided by Heiko Schlittermann.
2500
2501 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
2502 plus update to original patch.
2503
2504 NM/26 Bugzilla 799: Documentation correction for ratelimit.
2505
2506 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2507 Patch provided by David Brownlee.
2508
2509 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
2510
2511 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
2512
2513 NM/30 Bugzilla 888: TLS documentation bugfixes.
2514
2515 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
2516
2517 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
2518 Unlike the original bugzilla I have changed all shell scripts in src tree.
2519
2520 NM/33 Bugzilla 898: Transport filter timeout fix.
2521 Patch by Todd Rinaldo.
2522
2523 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
2524 Patch by Serge Demonchaux.
2525
2526 NM/35 Bugzilla 39: Base64 decode bug fixes.
2527 Patch by Jakob Hirsch.
2528
2529 NM/36 Bugzilla 909: Correct connect() call in dcc code.
2530
2531 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
2532
2533 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
2534
2535 NM/39 Bugzilla 911: Fixed MakeLinks build script.
2536
2537
2538 Exim version 4.69
2539 -----------------
2540
2541 TK/01 Add preliminary DKIM support. Currently requires a forked version of
2542 ALT-N's libdkim that I have put here:
2543 http://duncanthrax.net/exim-experimental/
2544
2545 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2546 were called 'true' and it seems that C99 defines that as a reserved
2547 keyword to be used with 'bool' variable types. That means you could
2548 not include C99-style headers which use bools without triggering
2549 build errors in sieve.c.
2550
2551 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2552 as mailq or other aliases. Changed the --help handling significantly
2553 to do whats expected. exim_usage() emits usage/help information.
2554
2555 SC/01 Added the -bylocaldomain option to eximstats.
2556
2557 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
2558
2559 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
2560
2561 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
2562
2563
2564 Exim version 4.68
2565 -----------------
2566
2567 PH/01 Another patch from the Sieve maintainer.
2568
2569 PH/02 When an IPv6 address is converted to a string for single-key lookup
2570 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2571 dots are used instead of colons so that keys in lsearch files need not
2572 contain colons. This was done some time before quoting was made available
2573 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2574 (notated using the quote facility) so as to distinguish them from IPv4
2575 keys. This meant that lookups for IP addresses in host lists did not work
2576 for iplsearch lookups.
2577
2578 This has been fixed by arranging for IPv6 addresses to be expressed with
2579 colons if the lookup type is iplsearch. This is not incompatible, because
2580 previously such lookups could never work.
2581
2582 The situation is now rather anomalous, since one *can* have colons in
2583 ordinary lsearch keys. However, making the change in all cases is
2584 incompatible and would probably break a number of configurations.
2585
2586 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2587 version.
2588
2589 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2590 conversion specification without a maximum field width, thereby enabling
2591 a rogue spamd server to cause a buffer overflow. While nobody in their
2592 right mind would setup Exim to query an untrusted spamd server, an
2593 attacker that gains access to a server running spamd could potentially
2594 exploit this vulnerability to run arbitrary code as the Exim user.
2595
2596 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2597 $primary_hostname instead of what libspf2 thinks the hosts name is.
2598
2599 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2600 a directory entry by the name of the lookup key. Previously, if a
2601 symlink pointed to a non-existing file or a file in a directory that
2602 Exim lacked permissions to read, a lookup for a key matching that
2603 symlink would fail. Now it is enough that a matching directory entry
2604 exists, symlink or not. (Bugzilla 503.)
2605
2606 PH/03 The body_linecount and body_zerocount variables are now exported in the
2607 local_scan API.
2608
2609 PH/04 Added the $dnslist_matched variable.
2610
2611 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2612 This means they are set thereafter only if the connection becomes
2613 encrypted.
2614
2615 PH/06 Added the client_condition to authenticators so that some can be skipped
2616 by clients under certain conditions.
2617
2618 PH/07 The error message for a badly-placed control=no_multiline_responses left
2619 "_responses" off the end of the name.
2620
2621 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2622
2623 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2624 (without spaces) instead of just copying the configuration text.
2625
2626 PH/10 Added the /noupdate option to the ratelimit ACL condition.
2627
2628 PH/11 Added $max_received_linelength.
2629
2630 PH/12 Added +ignore_defer and +include_defer to host lists.
2631
2632 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2633 way in which PCRE > 7.0 is built.
2634
2635 PH/14 Implemented queue_only_load_latch.
2636
2637 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2638 MAIL command. The effect was to mangle the value on 64-bit systems.
2639
2640 PH/16 Another patch from the Sieve maintainer.
2641
2642 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2643
2644 PH/18 If a system quota error occurred while trying to create the file for
2645 a maildir delivery, the message "Mailbox is full" was not appended to the
2646 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2647 only to a quota excession during the actual writing of the file.
2648
2649 PH/19 It seems that peer DN values may contain newlines (and other non-printing
2650 characters?) which causes problems in log lines. The DN values are now
2651 passed through string_printing() before being added to log lines.
2652
2653 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
2654 and InterBase are left for another time.)
2655
2656 PH/21 Added message_body_newlines option.
2657
2658 PH/22 Guard against possible overflow in moan_check_errorcopy().
2659
2660 PH/23 POSIX allows open() to be a macro; guard against that.
2661
2662 PH/24 If the recipient of an error message contained an @ in the local part
2663 (suitably quoted, of course), incorrect values were put in $domain and
2664 $local_part during the evaluation of errors_copy.
2665
2666
2667 Exim version 4.67
2668 -----------------
2669
2670 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2671 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2672 Jan Srzednicki.
2673
2674 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2675 issue a MAIL command.
2676
2677 PH/02 In an ACL statement such as
2678
2679 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2680
2681 if a client was not listed at all, or was listed with a value other than
2682 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2683 the condition was not true (as it should be), so access was not denied.
2684 The bug was that the ! inversion was incorrectly passed on to the second
2685 item. This has been fixed.
2686
2687 PH/03 Added additional dnslists conditions == and =& which are different from
2688 = and & when the dns lookup returns more than one IP address.
2689
2690 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2691 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2692
2693 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2694 FSYNC, which compiles an option called disable_fsync that allows for
2695 bypassing fsync(). The documentation is heavily laced with warnings.
2696
2697 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2698
2699 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2700 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2701 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2702 including adding "make clean"; (3) Added -fPIC when compiling the test
2703 dynamically loaded module, to get rid of a warning.
2704
2705 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2706 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2707 = 0s. The bug is otherwise harmless.
2708
2709 PH/07 There was a bug in the dovecot authenticator such that the value of
2710 $auth1 could be overwritten, and so not correctly preserved, after a
2711 successful authentication. This usually meant that the value preserved by
2712 the server_setid option was incorrect.
2713
2714 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2715
2716 PH/09 Installed PCRE release 7.0.
2717
2718 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2719 run for batched SMTP input. It is now run at the start of every message
2720 in the batch. While fixing this I discovered that the process information
2721 (output by running exiwhat) was not always getting set for -bs and -bS
2722 input. This is fixed, and it now also says "batched" for BSMTP.
2723
2724 PH/11 Added control=no_pipelining.
2725
2726 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2727 patch, slightly modified), and move the expansion of helo_data till after
2728 the connection is made in the smtp transport (so it can use these
2729 values).
2730
2731 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2732
2733 PH/14 Added log_selector = +pid.
2734
2735 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2736
2737 PH/16 Add ${if forany and ${if forall.
2738
2739 PH/17 Added dsn_from option to vary the From: line in DSNs.
2740
2741 PH/18 Flush SMTP output before performing a callout, unless control =
2742 no_callout_flush is set.
2743
2744 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2745 was true (the default) a successful delivery failed to delete the retry
2746 item, thus causing premature timeout of the address. The bug is now
2747 fixed.
2748
2749 PH/20 Added hosts_avoid_pipelining to the smtp transport.
2750
2751 PH/21 Long custom messages for fakedefer and fakereject are now split up
2752 into multiline responses in the same way that messages for "deny" and
2753 other ACL rejections are.
2754
2755 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2756 with slight modification.
2757
2758 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2759 draft, changing the syntax and factoring some duplicate code".
2760
2761 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2762 for deliveries of the second and subsequent messages over the same SMTP
2763 connection.
2764
2765 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2766 ${reduce, with only minor "tidies".
2767
2768 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2769
2770 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2771 expansion side effects.
2772
2773 PH/27 When a message times out after an over-quota error from an Exim-imposed
2774 quota, the bounce message says "mailbox is full". This message was not
2775 being given when it was a system quota that was exceeded. It now should
2776 be the same.
2777
2778 MH/03 Made $recipients available in local_scan(). local_scan() already has
2779 better access to the recipient list through recipients_list[], but
2780 $recipients can be useful in postmaster-provided expansion strings.
2781
2782 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2783 in the case of a MAIL command with additional options following the
2784 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2785 were accidentally chopped off.
2786
2787 PH/29 SMTP synchronization checks are implemented when a command is read -
2788 there is a check that no more input is waiting when there shouldn't be
2789 any. However, for some commands, a delay in an ACL can mean that it is
2790 some time before the response is written. In this time, more input might
2791 arrive, invalidly. So now there are extra checks after an ACL has run for
2792 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2793 pipelining has not been advertised.
2794
2795 PH/30 MH's patch to allow iscntrl() characters to be list separators.
2796
2797 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2798 returned in the SMTP response when smtp_return_error_details was false.
2799 This has been fixed.
2800
2801 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2802 instead of the C I/O that was originally supplied, because problems were
2803 reported on Solaris.
2804
2805 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2806 Exim which did not show up earlier: it was assuming that a call to
2807 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2808 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2809 was a macro that became an assignment, so it seemed to work. This has
2810 changed to a proper function call with a void return, hence the compile
2811 error. Exim's code has been fixed.
2812
2813 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2814 cpus.
2815
2816 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2817
2818 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2819
2820 PH/37 If a message is not accepted after it has had an id assigned (e.g.
2821 because it turns out to be too big or there is a timeout) there is no
2822 "Completed" line in the log. When some messages of this type were
2823 selected by exigrep, they were listed as "not completed". Others were
2824 picked up by some special patterns. I have improved the selection
2825 criteria to be more general.
2826
2827 PH/38 The host_find_failed option in the manualroute router can now be set
2828 to "ignore", to completely ignore a host whose IP address cannot be
2829 found. If all hosts are ignored, the behaviour is controlled by the new
2830 host_all_ignored option.
2831
2832 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2833 homing or because of multiple MX records with /mx) generated more than
2834 one IP address, and the following item turned out to be the local host,
2835 all the secondary addresses of the first item were incorrectly removed
2836 from the list, along with the local host and any following hosts (which
2837 is what is supposed to happen).
2838
2839 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2840 whoever called Exim into the -H file. In the case of the daemon it was
2841 behaving confusingly. When first started, it used values for whoever
2842 started the daemon, but after a SIGHUP it used the Exim user (because it
2843 calls itself on a restart). I have changed the code so that it now always
2844 uses the Exim user.
2845
2846 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2847 message are rejected with the same error (e.g. no authentication or bad
2848 sender address), and a DATA command is nevertheless sent (as can happen
2849 with PIPELINING or a stupid MUA), the error message that was given to the
2850 RCPT commands is included in the rejection of the DATA command. This is
2851 intended to be helpful for MUAs that show only the final error to their
2852 users.
2853
2854 PH/42 Another patch from the Sieve maintainer.
2855
2856 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2857 Eximstats - Fixed some broken HTML links and added missing column headers
2858 (Jez Hancock).
2859 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2860 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2861
2862 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2863
2864 PH/43 Yet another patch from the Sieve maintainer.
2865
2866 PH/44 I found a way to check for a TCP/IP connection going away before sending
2867 the response to the final '.' that terminates a message, but only in the
2868 case where the client has not sent further data following the '.'
2869 (unfortunately, this is allowed). However, in many cases there won't be
2870 any further data because there won't be any more messages to send. A call
2871 to select() can be used: if it shows that the input is "ready", there is
2872 either input waiting, or the socket has been closed. An attempt to read
2873 the next input character can distinguish the two cases. Previously, Exim
2874 would have sent an OK response which the client would never have see.
2875 This could lead to message repetition. This fix should cure that, at
2876 least in a lot of common cases.
2877
2878 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2879 advertised in response to EHLO.
2880
2881
2882 Exim version 4.66
2883 -----------------
2884
2885 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2886 fixed by 4.65/MH/01 (is this a record?) are fixed:
2887
2888 (i) An empty string was always treated as zero by the numeric comparison
2889 operators. This behaviour has been restored.
2890
2891 (ii) It is documented that the numeric comparison operators always treat
2892 their arguments as decimal numbers. This was broken in that numbers
2893 starting with 0 were being interpreted as octal.
2894
2895 While fixing these problems I realized that there was another issue that
2896 hadn't been noticed. Values of message_size_limit (both the global option
2897 and the transport option) were treated as octal if they started with 0.
2898 The documentation was vague. These values are now always treated as
2899 decimal, and I will make that clear in the documentation.
2900
2901
2902 Exim version 4.65
2903 -----------------
2904
2905 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2906 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2907 versions. (#438)
2908
2909 MH/01 Don't check that the operands of numeric comparison operators are
2910 integers when their expansion is in "skipping" mode (fixes bug
2911 introduced by 4.64-PH/07).
2912
2913 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2914 child addresses, Exim now panics and dies. Previously, because the count
2915 is held in a short int, deliveries were likely to be lost. As such a
2916 large number of recipients for a single message is ridiculous
2917 (performance will be very, very poor), I have chosen to impose a limit
2918 rather than extend the field.
2919
2920
2921 Exim version 4.64
2922 -----------------
2923
2924 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2925 leftover -K file (the existence of which was triggered by #402).
2926 While we were at it, introduced process PID as part of the -K
2927 filename. This should rule out race conditions when creating
2928 these files.
2929
2930 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2931 processing considerably. Previous code took too long for large mails,
2932 triggering a timeout which in turn triggers #401.
2933
2934 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2935 in the DK code in transports.c. sendfile() is not really portable,
2936 hence the _LINUX specificness.
2937
2938 TF/01 In the add_headers option to the mail command in an Exim filter,
2939 there was a bug that Exim would claim a syntax error in any
2940 header after the first one which had an odd number of characters
2941 in the field name.
2942
2943 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2944 callout verification, Exim cached a "reject" for the entire domain. This
2945 is correct for most verifications, but it is not correct for a recipient
2946 verification with use_sender or use_postmaster set, because in that case
2947 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2948 case of MAIL FROM:<> rejection from other early rejections (e.g.
2949 rejection of HELO). When verifying a recipient using a non-null MAIL
2950 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2951 Whatever the result of the callout, the value of the domain cache is
2952 left unchanged (for any other kind of callout, getting as far as trying
2953 RCPT means that the domain itself is ok).
2954
2955 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2956 gcc 4.1.1 threw up.
2957
2958 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2959 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2960 session, the daemon ignores ECONNECT errors and logs others; it now
2961 ignores EPIPE as well.
2962
2963 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2964 (quoted-printable decoding).
2965
2966 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
2967 later the small subsequent patch to fix an introduced bug.
2968
2969 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2970
2971 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2972
2973 PH/08 An error is now given if message_size_limit is specified negative.
2974
2975 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
2976 to be given (somewhat) arbitrary names.
2977
2978 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2979 in 4.64-PH/09.
2980
2981 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2982 miscellaneous code fixes
2983
2984 PH/10 Added the log_reject_target ACL modifier to specify where to log
2985 rejections.
2986
2987 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2988 hostname. This is wrong, because it relates to the incoming message (and
2989 probably the interface on which it is arriving) and not to the outgoing
2990 callout (which could be using a different interface). This has been
2991 changed to use the value of the helo_data option from the smtp transport
2992 instead - this is what is used when a message is actually being sent. If
2993 there is no remote transport (possible with a router that sets up host
2994 addresses), $smtp_active_hostname is used.
2995
2996 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
2997 tweaks were necessary in order to get it to work (see also 21 below):
2998 (a) The code assumed that strncpy() returns a negative number on buffer
2999 overflow, which isn't the case. Replaced with Exim's string_format()
3000 function.
3001 (b) There were several signed/unsigned issues. I just did the minimum
3002 hacking in of casts. There is scope for a larger refactoring.
3003 (c) The code used strcasecmp() which is not a standard C function.
3004 Replaced with Exim's strcmpic() function.
3005 (d) The code set only $1; it now sets $auth1 as well.
3006 (e) A simple test gave the error "authentication client didn't specify
3007 service in request". It would seem that Dovecot has changed its
3008 interface. Fortunately there's a specification; I followed it and
3009 changed what the client sends and it appears to be working now.
3010
3011 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
3012 decoding.
3013
3014 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
3015 address A is aliased to B and C, where B exists and C does not. Without
3016 -v the output is "A verified" because verification stops after a
3017 successful redirection if more than one address is generated. However,
3018 with -v the child addresses are also verified. Exim was outputting "A
3019 failed to verify" and then showing the successful verification for C,
3020 with its parentage. It now outputs "B failed to verify", showing B's
3021 parentage before showing the successful verification of C.
3022
3023 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
3024 look up a TXT record in a specific list after matching in a combined
3025 list.
3026
3027 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
3028 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
3029 they consult the DNS. I had assumed they would set it the way they
3030 wanted; and indeed my experiments on Linux seem to show that in some
3031 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
3032 To be on the safe side, however, I have now made the interface to
3033 host_find_byname() similar to host_find_bydns(), with an argument
3034 containing the DNS resolver options. The host_find_byname() function now
3035 sets these options at its start, just as host_find_bydns() does. The smtp
3036 transport options dns_qualify_single and dns_search_parents are passed to
3037 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
3038 of host_find_byname() use the default settings of RES_DEFNAMES
3039 (qualify_single) but not RES_DNSRCH (search_parents).
3040
3041 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
3042 spool_read_header() do less string testing, by means of a preliminary
3043 switch on the second character of optional "-foo" lines. (This is
3044 overdue, caused by the large number of possibilities that now exist.
3045 Originally there were few.) While I was there, I also converted the
3046 str(n)cmp tests so they don't re-test the leading "-" and the first
3047 character, in the hope this might squeeze out yet more improvement.
3048
3049 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
3050 flag allowing group syntax was set by the header_syntax check but not
3051 turned off, possible causing trouble later; (2) The flag was not being
3052 set at all for the header_verify test, causing "group"-style headers to
3053 be rejected. I have now set it in this case, and also caused header_
3054 verify to ignore an empty address taken from a group. While doing this, I
3055 came across some other cases where the code for allowing group syntax
3056 while scanning a header line wasn't quite right (mostly, not resetting
3057 the flag correctly in the right place). These bugs could have caused
3058 trouble for malformed header lines. I hope it is now all correct.
3059
3060 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
3061 with the "reply" argument non-NULL. The code, however (which originally
3062 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
3063 but it didn't always do it. This confused somebody who was copying the
3064 code for some other use. I have removed all the tests.
3065
3066 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
3067 feature that was used to support insecure browsers during the U.S. crypto
3068 embargo. It requires special client support, and Exim is probably the
3069 only MTA that supported it -- and would never use it because real RSA is
3070 always available. This code has been removed, because it had the bad
3071 effect of slowing Exim down by computing (never used) parameters for the
3072 RSA_EXPORT functionality.
3073
3074 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
3075 authenticator to fail if there's a tab character in the incoming data
3076 (there should never be unless someone is messing about, as it's supposed
3077 to be base64-encoded). Also added, on Timo's advice, the "secured" option
3078 if the connection is using TLS or if the remote IP is the same as the
3079 local IP, and the "valid-client-cert option" if a client certificate has
3080 been verified.
3081
3082 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
3083 authenticators. This can be used for authorization after authentication
3084 succeeds. (In the case of plaintext, it servers for both authentication
3085 and authorization.)
3086
3087 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
3088 if any retry times were supplied.
3089
3090 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
3091 connection, where there is no client IP address to check. In this
3092 situation, the verify now always succeeds.
3093
3094 PH/25 Applied John Jetmore's -Mset patch.
3095
3096 PH/26 Added -bem to be like -Mset, but loading a message from a file.
3097
3098 PH/27 In a string expansion for a processed (not raw) header when multiple
3099 headers of the same name were present, leading whitespace was being
3100 removed from all of them, but trailing whitespace was being removed only
3101 from the last one. Now trailing whitespace is removed from each header
3102 before concatenation. Completely empty headers in a concatenation (as
3103 before) are ignored.
3104
3105 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
3106 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
3107
3108 PH/29 [Removed. This was a change that I later backed out, and forgot to
3109 correct the ChangeLog entry (that I had efficiently created) before
3110 committing the later change.]
3111
3112 PH/30 Exim was sometimes attempting to deliver messages that had suffered
3113 address errors (4xx response to RCPT) over the same connection as other
3114 messages routed to the same hosts. Such deliveries are always "forced",
3115 so retry times are not inspected. This resulted in far too many retries
3116 for the affected addresses. The effect occurred only when there were more
3117 hosts than the hosts_max_try setting in the smtp transport when it had
3118 the 4xx errors. Those hosts that it had tried were not added to the list
3119 of hosts for which the message was waiting, so if all were tried, there
3120 was no problem. Two fixes have been applied:
3121
3122 (i) If there are any address or message errors in an SMTP delivery, none
3123 of the hosts (tried or untried) are now added to the list of hosts
3124 for which the message is waiting, so the message should not be a
3125 candidate for sending over the same connection that was used for a
3126 successful delivery of some other message. This seems entirely
3127 reasonable: after all the message is NOT "waiting for some host".
3128 This is so "obvious" that I'm not sure why it wasn't done
3129 previously. Hope I haven't missed anything, but it can't do any
3130 harm, as the worst effect is to miss an optimization.
3131
3132 (ii) If, despite (i), such a delivery is accidentally attempted, the
3133 routing retry time is respected, so at least it doesn't keep
3134 hammering the server.
3135
3136 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
3137 in ${readsocket because some servers need this prod.
3138
3139 PH/32 Added some extra debug output when updating a wait-xxx database.
3140
3141 PH/33 The hint "could be header name not terminated by colon", which has been
3142 given for certain expansion errors for a long time, was not being given
3143 for the ${if def:h_colon_omitted{... case.
3144
3145 PH/34 The spec says: "With one important exception, whenever a domain list is
3146 being scanned, $domain contains the subject domain." There was at least
3147 one case where this was not true.
3148
3149 PH/35 The error "getsockname() failed: connection reset by peer" was being
3150 written to the panic log as well as the main log, but it isn't really
3151 panic-worthy as it just means the connection died rather early on. I have
3152 removed the panic log writing for the ECONNRESET error when getsockname()
3153 fails.
3154
3155 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
3156 runs only) independently of the message's sender address. This meant
3157 that, if the 4xx error was in fact related to the sender, a different
3158 message to the same recipient with a different sender could confuse
3159 things. In particular, this can happen when sending to a greylisting
3160 server, but other circumstances could also provoke similar problems.
3161 I have changed the default so that the retry time for these errors is now
3162 based a combination of the sender and recipient addresses. This change
3163 can be overridden by setting address_retry_include_sender=false in the
3164 smtp transport.
3165
3166 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
3167 remote server are returned as part of bounce messages. This was not
3168 happening for LMTP over a pipe (the lmtp transport), but now it is the
3169 same for both kinds of LMTP.
3170
3171 PH/38 Despite being documented as not happening, Exim was rewriting addresses
3172 in header lines that were in fact CNAMEs. This is no longer the case.
3173
3174 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
3175 and queue runs started by the daemon processed all messages. This has
3176 been fixed so that -R and -S can now usefully be given with -q<time>.
3177
3178 PH/40 Import PCRE release 6.7 (fixes some bugs).
3179
3180 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
3181
3182 PH/42 Give an error if -q is specified more than once.
3183
3184 PH/43 Renamed the variables $interface_address and $interface_port as
3185 $received_ip_address and $received_port, to make it clear that these
3186 values apply to message reception, and not to the outgoing interface when
3187 a message is delivered. (The old names remain recognized, of course.)
3188
3189 PH/44 There was no timeout on the connect() call when using a Unix domain
3190 socket in the ${readsocket expansion. There now is.
3191
3192 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
3193 be meaningful with "accept".
3194
3195 SC/01 Eximstats V1.43
3196 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
3197
3198 SC/02 Eximstats V1.44
3199 Use a glob alias rather than an array ref in the generated
3200 parser. This improves both readability and performance.
3201
3202 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
3203 Collect SpamAssassin and rejection statistics.
3204 Don't display local sender or destination tables unless
3205 there is data to show.
3206 Added average volumes into the top table text output.
3207
3208 SC/04 Eximstats V1.46
3209 Collect data on the number of addresses (recipients)
3210 as well as the number of messages.
3211
3212 SC/05 Eximstats V1.47
3213 Added 'Message too big' to the list of mail rejection
3214 reasons (thanks to Marco Gaiarin).
3215
3216 SC/06 Eximstats V1.48
3217 Mainlog lines which have GMT offsets and are too short to
3218 have a flag are now skipped.
3219
3220 SC/07 Eximstats V1.49 (Alain Williams)
3221 Added the -emptyok flag.
3222
3223 SC/08 Eximstats V1.50
3224 Fixes for obtaining the IP address from reject messages.
3225
3226 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
3227 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
3228 whitespace changes from 4.64-PH/27
3229
3230 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
3231 match 4.64-PH/13
3232
3233 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
3234 are found, allow negative numbers in numeric criteria)
3235
3236 JJ/06 exipick.20061117.2, added new $message_body_missing variable
3237
3238 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
3239 to match changes made in 4.64-PH/43
3240
3241 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
3242
3243 PH/47 Put in an explicit test for a DNS lookup of an address record where the
3244 "domain" is actually an IP address, and force a failure. This locks out
3245 those revolvers/nameservers that support "A-for-A" lookups, in
3246 contravention of the specifications.
3247
3248 PH/48 When a host name was looked up from an IP address, and the subsequent
3249 forward lookup of the name timed out, the host name was left in
3250 $sender_host_name, contrary to the specification.
3251
3252 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
3253 restricted to single-key lookups, Exim was not diagnosing an error if
3254 * or *@ was used with a query-style lookup.
3255
3256 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
3257
3258 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
3259 long ago, but noone interested enough thought of it. Let's just say that
3260 the "1.1" means that there are some new functions that weren't there at
3261 some point in the past.
3262
3263 PH/51 Error processing for expansion failure of helo_data from an smtp
3264 transport during callout processing was broken.
3265
3266 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
3267 tested/used via the -bh/-bhc/-bs options.
3268
3269 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
3270 bug, fixed in subsequent PCRE releases).
3271
3272 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
3273 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
3274
3275 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
3276
3277
3278 Exim version 4.63
3279 -----------------
3280
3281 SC/01 Use a glob alias rather than an array ref in eximstats generated
3282 parser. This improves both readability and performance.
3283
3284 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
3285 Don't display local sender or destination tables in eximstats unless
3286 there is data to show.
3287 Added average volumes into the eximstats top table text output.
3288
3289 SC/03 Collect data on the number of addresses (recipients) as well
3290 as the number of messages in eximstats.
3291
3292 TF/01 Correct an error in the documentation for the redirect router. Exim
3293 does (usually) call initgroups() when daemonizing.
3294
3295 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
3296 with consistent privilege compared to when running as a daemon.
3297
3298 TF/03 Note in the spec that $authenticated_id is not set for local
3299 submissions from trusted users.
3300
3301 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
3302 Thanks to Dean Brooks <dean@iglou.com> for the patch.
3303
3304 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
3305 by adding some example configuration directives to the default
3306 configuration file. A little bit of work is required to uncomment the
3307 directives and define how usernames and passwords are checked, but
3308 there is now a framework to start from.
3309
3310 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
3311 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
3312 without this. I don't know how relevant this is to other LDAP libraries.
3313
3314 PH/02 Add the verb name to the "unknown ACL verb" error.
3315
3316 PH/03 Magnus Holmgren's patch for filter_prepend_home.
3317
3318 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
3319
3320 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
3321 directory not expanded when it should be if an expanded home directory
3322 was set for the address (which is overridden by the transport).
3323
3324 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
3325 libradius.
3326
3327 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
3328 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
3329 because it is too late at that time, and has no effect.
3330
3331 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
3332 security issue with \' (bugzilla #107). I could not use the
3333 PQescapeStringConn() function, because it needs a PGconn value as one of
3334 its arguments.
3335
3336 PH/08 When testing addresses using -bt, indicate those final addresses that
3337 are duplicates that would not cause an additional delivery. At least one
3338 person was confused, thinking that -bt output corresponded to deliveries.
3339 (Suppressing duplicates isn't a good idea as you lose the information
3340 about possibly different redirections that led to the duplicates.)
3341
3342 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
3343 systems where poll() doesn't work, in particular OS X.
3344
3345 PH/10 Added more information to debugging output for retry time not reached.
3346
3347 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
3348 operations in malware.c.
3349
3350 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
3351 signatures.
3352
3353 PH/13 If write_rejectlog was set false when logging was sent to syslog with
3354 syslog_duplication set false, log lines that would normally be written
3355 both the the main log and to the reject log were not written to syslog at
3356 all.
3357
3358 PH/14 In the default configuration, change the use of "message" in ACL warn
3359 statements to "add_header".
3360
3361 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
3362 not followed by a command (e.g. "seen endif").
3363
3364 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
3365 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
3366 latter.
3367
3368 PH/17 Added extra conditions to the default value of delay_warning_condition
3369 so that it is now:
3370
3371 ${if or { \
3372 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
3373 { match{$h_precedence:}{(?i)bulk|list|junk} } \
3374 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
3375 }{no}{yes}}
3376
3377 The Auto-Submitted: and various List- headers are standardised, whereas I
3378 don't think Precedence: ever was.
3379
3380 PH/18 Refactored debugging code in route_finduser() to show more information,
3381 in particular, the error code if getpwnam() issues one.
3382
3383 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
3384 This is apparently needed in addition to the PH/07 change above to avoid
3385 any possible encoding problems.
3386
3387 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
3388 but not after initializing Perl.
3389
3390 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
3391 output them only if debugging. By default they are written stderr,
3392 apparently, which is not desirable.
3393
3394 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
3395 queries.
3396
3397 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
3398 --not options
3399
3400 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
3401
3402 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
3403 authenticated or an ident call has been made. Suppress the default
3404 values for $authenticated_id and $authenticated_sender (but permit -oMai
3405 and -oMas) when testing with -bh.
3406
3407 PH/24 Re-jigged the order of the tests in the default configuration so that the
3408 tests for valid domains and recipients precede the DNS black list and CSA
3409 tests, on the grounds that those ones are more expensive.
3410
3411 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
3412 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
3413 This bug exists in every version of Exim that I still have, right back to
3414 0.12.
3415
3416 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
3417 However, an attempt to turn on case-sensitivity in a regex key by
3418 including (?-i) didn't work because the subject string was already
3419 lowercased, and the effects were non-intuitive. It turns out that a
3420 one-line patch can be used to allow (?-i) to work as expected.
3421
3422
3423 Exim version 4.62
3424 -----------------
3425
3426 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
3427 other effects) broke the use of negated acl sub-conditions.
3428
3429 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
3430 patch).
3431
3432 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
3433 "Deny" causes Exim to reject the incoming connection with a 554 error.
3434 Unfortunately, if there is a major crisis, such as a disk failure,
3435 tcp-wrappers gives "deny", whereas what one would like would be some
3436 kind of temporary error. A kludge has been added to help with this.
3437 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
3438 554 error is used if errno is still zero or contains ENOENT (which occurs
3439 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
3440 451 error is used.
3441
3442 PH/03 Add -lutil to the default FreeBSD LIBS setting.
3443
3444 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
3445 errors. Otherwise a message that provokes a temporary error (when other
3446 messages do not) can cause a whole host to time out.
3447
3448 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
3449 addresses were routed directly to files or pipes from a redirect router.
3450 File deliveries just didn't batch; pipe deliveries might have suffered
3451 odd errors.
3452
3453 PH/06 A failure to get a lock for a hints database would erroneously always say
3454 "Failed to get write lock", even when it was really a read lock.
3455
3456 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
3457 of 0600. This has been changed to use the value of the lockfile_mode
3458 option (which defaults to 0600).
3459
3460 PH/08 Applied small patch from the Sieve maintainer.
3461
3462 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
3463 folder from quota calculations, a direct delivery into this folder messed
3464 up the contents of the maildirsize file. This was because the regex was
3465 used only to exclude .Trash (or whatever) when the size of the mailbox
3466 was calculated. There was no check that a delivery was happening into an
3467 excluded directory. This bug has been fixed by ignoring all quota
3468 processing for deliveries into excluded directories.
3469
3470 PH/10 Added the maildirfolder_create_regex option to appendfile.
3471
3472
3473 Exim version 4.61
3474 -----------------
3475
3476 PH/01 The code for finding all the local interface addresses on a FreeBSD
3477 system running IPv6 was broken. This may well have applied to all BSD
3478 systems, as well as to others that have similar system calls. The broken
3479 code found IPv4 interfaces correctly, but gave incorrect values for the
3480 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
3481 that it would not match correctly against @[] and not recognize the IPv6
3482 addresses as local.
3483
3484 PH/02 The ipliteral router was not recognizing addresses of the form user@
3485 [ipv6:....] because it didn't know about the "ipv6:" prefix.
3486
3487 PH/03 Added disable_ipv6.
3488
3489 PH/04 Changed $reply_address to use the raw form of the headers instead of the
3490 decoded form, because it is most often used to construct To: headers
3491 lines in autoreplies, and the decoded form may well be syntactically
3492 invalid. However, $reply_address has leading white space removed, and all
3493 newlines turned into spaces so that the autoreply transport does not
3494 grumble.
3495
3496 PH/05 If group was specified without a user on a router, and no group or user
3497 was specified on a transport, the group from the router was ignored.
3498
3499 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
3500 for visible compile-time settings that can be used to change these
3501 numbers, for those that want even more. Backwards compatibility with old
3502 spool files has been maintained. However, going back to a previous Exim
3503 release will lost any variables that are in spool files.
3504
3505 PH/07 Two small changes when running in the test harness: increase delay when
3506 passing a TCP/IP connection to a new process, in case the original
3507 process has to generate a bounce, and remove special handling of
3508 127.0.0.2 (sic), which is no longer necessary.
3509
3510 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
3511 be the same on different OS.
3512
3513 PH/09 Moved a debug statement in filter processing to avoid a race problem when
3514 testing.
3515
3516 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
3517 whether --show-vars was specified or not
3518
3519 JJ/02 exipick: Added support for new ACL variable spool format introduced
3520 in 4.61-PH/06
3521
3522 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
3523 syntactically invalid From: or Reply-to: line, and a filter used this to
3524 generate an autoreply, and therefore failed to obtain an address for the
3525 autoreply, Exim could try to deliver to a non-existent relative file
3526 name, causing unrelated and misleading errors. What now happens is that
3527 it logs this as a hard delivery error, but does not attempt to create a
3528 bounce message.
3529
3530 PH/11 The exinext utility has a -C option for testing purposes, but although
3531 the given file was scanned by exinext itself; it wasn't being passed on
3532 when Exim was called.
3533
3534 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
3535 an end-of-file indication when reading a command response.
3536
3537 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
3538 compiled. In many other places in Exim, IPv6 addresses are always
3539 recognized, so I have changed this. It also means that IPv4 domain
3540 literals of the form [IPV4:n.n.n.n] are now always recognized.
3541
3542 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
3543 used if the router is not running as root, for example, when verifying at
3544 ACL time, or when using -bh. The debugging output from this situation was
3545 non-existent - all you got was a failure to exec. I have made two
3546 changes:
3547
3548 (a) Failures to set uid/gid, the current directory, or a process leader
3549 in a subprocess such as that created by queryprogram now generate
3550 suitable debugging output when -d is set.
3551
3552 (b) The queryprogram router detects when it is not running as root,
3553 outputs suitable debugging information if -d is set, and then runs
3554 the subprocess without attempting to change uid/gid.
3555
3556 PH/15 Minor change to Makefile for building test_host (undocumented testing
3557 feature).
3558
3559 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
3560 additional section of a DNS packet that returns MX or SRV records.
3561 Instead, it always explicitly searches for A/AAAA records. This avoids
3562 major problems that occur when a DNS server includes only records of one
3563 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
3564 fixed another bug: if SRV records were looked up and the corresponding
3565 address records were *not* found in the additional section, the port
3566 values from the SRV records were lost.
3567
3568 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
3569 using the correct key (the original address) when searching the retry
3570 rules in order to find which one to use for generating the retry hint.
3571
3572 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
3573 adding the default one. Similarly, if it contains a Reply-To: header, the
3574 errors_reply_to option, if set, is not used.
3575
3576 PH/19 When calculating a retry time, Exim used to measure the "time since
3577 failure" by looking at the "first failed" field in the retry record. Now
3578 it does not use this if it is later than than the arrival time of the
3579 message. Instead it uses the arrival time. This makes for better
3580 behaviour in cases where some deliveries succeed, thus re-setting the
3581 "first failed" field. An example is a quota failure for a huge message
3582 when small messages continue to be delivered. Without this change, the
3583 "time since failure" will always be short, possible causing more frequent
3584 delivery attempts for the huge message than are intended.
3585 [Note: This change was subsequently modified - see PH/04 for 4.62.]
3586
3587 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
3588 $1, $2, $3) because the numerical variables can be reset during some
3589 expansion items (e.g. "match"), thereby losing the authentication data.
3590
3591 PH/21 Make -bV show the size of off_t variables so that the test suite can
3592 decide whether to run tests for quotas > 2G.
3593
3594 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
3595 mailbox_size, and mailbox_filecount in the appendfile transport. If a
3596 filecount value is greater than 2G or if a quota value is greater than 2G
3597 on a system where the size of off_t is not greater than 4, a panic error
3598 is given.
3599
3600 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
3601 never match. The debug and -bh output now contains an explicit error
3602 message indicating a malformed IPv4 address or mask.
3603
3604 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
3605 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
3606 PH/23 above applies.
3607
3608 PH/25 Do not write to syslog when running in the test harness. The only
3609 occasion when this arises is a failure to open the main or panic logs
3610 (for which there is an explicit test).
3611
3612 PH/26 Added the /no_tell option to "control=freeze".
3613
3614 PH/27 If a host name lookup failed very early in a connection, for example, if
3615 the IP address matched host_lookup and the reverse lookup yielded a name
3616 that did not have a forward lookup, an error message of the form "no IP
3617 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
3618 could be logged. Now it outputs the IP address instead of "NULL".
3619
3620 PH/28 An enabling patch from MH: add new function child_open_exim2() which
3621 allows the sender and the authenticated sender to be set when
3622 submitting a message from within Exim. Since child_open_exim() is
3623 documented for local_scan(), the new function should be too.
3624
3625 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
3626 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
3627 results in an empty string is now treated as unset.
3628
3629 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
3630
3631 PH/31 Added sender_verify_fail logging option.
3632
3633 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
3634 needed by RFC 822 but not by RFC 2822 was commented out. I have now
3635 tidied the source and removed it altogether.
3636
3637 PH/33 When a queue run was abandoned because the load average was too high, a
3638 log line was always written; now it is written only if the queue_run log
3639 selector is set. In addition, the log line for abandonment now contains
3640 information about the queue run such as the pid. This is always present
3641 in "start" and "stop" lines but was omitted from the "abandon" line.
3642
3643 PH/34 Omit spaces between a header name and the colon in the error message that
3644 is given when verify = headers_syntax fails (if there are lots of them,
3645 the message gets confusing).
3646
3647 PH/35 Change the default for dns_check_names_pattern to allow slashes within
3648 names, as there are now some PTR records that contain slashes. This check
3649 is only to protect against broken name servers that fall over on strange
3650 characters, so the fact that it applies to all lookups doesn't matter.
3651
3652 PH/36 Now that the new test suite is complete, we can remove some of the
3653 special code in Exim that was needed for the old test suite. For example,
3654 sorting DNS records because real resolvers return them in an arbitrary
3655 order. The new test suite's fake resolver always returns records in the
3656 same order.
3657
3658 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
3659 bounces) except when queue_only is set, to avoid logging races between
3660 the different processes.
3661
3662 PH/38 Panic-die if .include specifies a non-absolute path.
3663
3664 PH/39 A tweak to the "H" retry rule from its user.
3665
3666 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
3667 a label. They prevented compilation on older perls.
3668
3669 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
3670 a warning to be raised on newish perls.
3671
3672 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
3673 on queue. Changes to match documented behaviour of showing count of
3674 messages matching specified criteria.
3675
3676 PH/40 Changed the default ident timeout from 30s to 5s.
3677
3678 PH/41 Added support for the use of login_cap features, on those BSD systems
3679 that have them, for controlling the resources used by pipe deliveries.
3680
3681 PH/42 The content-scanning code uses fopen() to create files in which to put
3682 message data. Previously it was not paying any attention to the mode of
3683 the files. Exim runs with umask(0) because the rest of the code creates
3684 files with open(), and sets the required mode explicitly. Thus, these
3685 files were ending up world-writeable. This was not a big issue, because,
3686 being within the spool directory, they were not world-accessible. I have
3687 created a function called modefopen, which takes an additional mode
3688 argument. It sets umask(777), creates the file, chmods it to the required
3689 mode, then resets the umask. All the relevant calls to fopen() in the
3690 content scanning code have been changed to use this function.
3691
3692 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
3693 to 24 hours. This avoids potential overflow problems when processing G
3694 and H retry rules. I suspect nobody ever tinkers with this value.
3695
3696 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
3697
3698 PH/45 When the plaintext authenticator is running as a client, the server's
3699 challenges are checked to ensure they are valid base64 strings. By
3700 default, the authentication attempt is cancelled if an invalid string is
3701 received. Setting client_ignore_invalid_base64 true ignores these errors.
3702 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
3703 they are received. Thus, the responses can be made to depend on the
3704 challenges. If an invalid string is ignored, an empty string is placed in
3705 the variable.
3706
3707 PH/46 Messages that are created by the autoreply transport now contains a
3708 References: header, in accordance with RFCs 2822 and 3834.
3709
3710 PH/47 Added authenticated_sender_force to the smtp transport.
3711
3712 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
3713
3714 PH/49 Installed latest patch from the Sieve maintainer.
3715
3716 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
3717 was also set, the appendfile transport was unnecessarily scanning a
3718 directory of message files (e.g. for maildir delivery) to find the count
3719 of files (along with the size), even though it did not need this
3720 information. It now does the scan only if it needs to find either the
3721 size of the count of files.
3722
3723 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
3724
3725 PH/52 Two bugs concerned with error handling when the smtp transport is
3726 used in LMTP mode:
3727
3728 (i) Exim was not creating retry information for temporary errors given
3729 for individual recipients after the DATA command when the smtp transport
3730 was used in LMTP mode. This meant that they could be retried too
3731 frequently, and not timed out correctly.
3732
3733 (ii) Exim was setting the flag that allows error details to be returned
3734 for LMTP errors on RCPT commands, but not for LMTP errors for individual
3735 recipients that were returned after the DATA command.
3736
3737 PH/53 This is related to PH/52, but is more general: for any failing address,
3738 when detailed error information was permitted to be returned to the
3739 sender, but the error was temporary, then after the final timeout, only
3740 "retry timeout exceeded" was returned. Now it returns the full error as
3741 well as "retry timeout exceeded".
3742
3743 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
3744 do this, and (what is worse) MTAs that accept it.
3745
3746 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
3747 will now be deprecated.
3748
3749 PH/56 New os.c-cygwin from the Cygwin maintainer.
3750
3751 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
3752 formats (previously only available in exim formats via -bpr, -bpru,
3753 and -bpra. Now also available in native and exiqgrep formats)
3754
3755 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
3756 with very large, slow to parse queues
3757
3758 JJ/08 exipick: added ! as generic prefix to negate any criteria format
3759
3760 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
3761
3762 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
3763 responses to authentication challenges, though it was showing the
3764 challenges; (ii) I've removed the CR characters from the debug output for
3765 SMTP output lines.
3766
3767 PH/58 Allow for the insertion of a newline as well as a space when a string
3768 is turned into more than one encoded-word during RFC 2047 encoding. The
3769 Sieve code now uses this.
3770
3771 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
3772 data_4xx, lost_connection, tls_required.
3773
3774 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
3775 message was being sent as an SMTP response.
3776
3777 PH/61 Add -l and -k options to exicyclog.
3778
3779 PH/62 When verifying, if an address was redirected to one new address, so that
3780 verification continued, and the new address failed or deferred after
3781 having set something in $address_data, the value of $address_data was not
3782 passed back to the ACL. This was different to the case when no
3783 redirection occurred. The value is now passed back in both cases.
3784
3785 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
3786 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
3787 use login_cap.h, so on its own it isn't the distinguishing feature. The
3788 new name refers directly to the setclassresources() function.
3789
3790 PH/65 Added configuration files for NetBSD3.
3791
3792 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
3793
3794 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
3795 is preferred over IPv4.
3796
3797 PH/68 The bounce_return_message and bounce_return_body options were not being
3798 honoured for bounces generated during the reception of non-SMTP messages.
3799 In particular, this applied to messages rejected by the ACL. This bug has
3800 been fixed. However, if bounce_return_message is true and bounce_return_
3801 body is false, the headers that are returned for a non-SMTP message
3802 include only those that have been read before the error was detected.
3803 (In the case of an ACL rejection, they have all been read.)
3804
3805 PH/69 The HTML version of the specification is now built in a directory called
3806 spec_html instead of spec.html, because the latter looks like a path with
3807 a MIME-type, and this confuses some software.
3808
3809 PH/70 Catch two compiler warnings in sieve.c.
3810
3811 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
3812 function verify_get_ident() calls ip_connect() to connect a socket, but
3813 if the "connect()" function timed out, ip_connect() used to close the
3814 socket. However, verify_get_ident() also closes the socket later, and in
3815 between Exim writes to the log, which may get opened at this point. When
3816 the socket was closed in ip_connect(), the log could get the same file
3817 descriptor number as the socket. This naturally causes chaos. The fix is
3818 not to close the socket in ip_connect(); the socket should be closed by
3819 the function that creates it. There was only one place in the code where
3820 this was missing, in the iplookup router, which I don't think anybody now
3821 uses, but I've fixed it anyway.
3822
3823 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
3824 well as to direct DNS lookups. Otherwise the handling of names in host
3825 lists is inconsistent and therefore confusing.
3826
3827
3828 Exim version 4.60
3829 -----------------
3830
3831 PH/01 Two changes to the default runtime configuration:
3832
3833 (1) Move the checks for relay_from_hosts and authenticated clients from
3834 after to before the (commented out) DNS black list checks.
3835
3836 (2) Add control=submission to the relay_from_hosts and authenticated
3837 clients checks, on the grounds that messages accepted by these
3838 statements are most likely to be submissions.
3839
3840 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
3841
3842 (1) Generate an error if the third argument for the ${prvs expansion is
3843 not a single digit.
3844
3845 (2) Treat a missing third argument of ${prvscheck as if it were an empty
3846 string.
3847
3848 (3) Reset the variables that are obtained from the first argument of
3849 ${prvscheck and used in the second argument before leaving the code,
3850 because their memory is reclaimed, so using them afterwards may do
3851 silly things.
3852
3853 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
3854 one (it's much easier than Tom thought :-).
3855
3856 (5) Because of (4), we can now allow for the use of $prvscheck_result
3857 inside the third argument.
3858
3859 PH/03 For some reason, the default setting of PATH when running a command from
3860 a pipe transport was just "/usr/bin". I have changed it to
3861 "/bin:/usr/bin".
3862
3863 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
3864 anything to be listed in the output from -bV.
3865
3866 PH/05 When a filter generated an autoreply, the entire To: header line was
3867 quoted in the delivery log line, like this:
3868
3869 => >A.N.Other <ano@some.domain> <original@ddress> ...
3870
3871 This has been changed so that it extracts the operative address. There
3872 may be more than one such address. If so, they are comma-separated, like
3873 this:
3874
3875 => >ano@some.domain,ona@other.domain <original@ddress> ...
3876
3877 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
3878 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
3879 not being looked up in the rDNS to get a host name, Exim was showing the
3880 IP address twice in Received: lines, even though the IP addresses were
3881 identical. For example:
3882
3883 Received: from [1.2.3.4] (helo=[1.2.3.4])
3884
3885 However, if the real host name was known, it was omitting the HELO data
3886 if it matched the actual IP address. This has been tidied up so that it
3887 doesn't show the same IP address twice.
3888
3889 PH/07 When both +timestamp and +memory debugging was on, the value given by
3890 $tod_xxx expansions could be wrong, because the tod_stamp() function was
3891 called by the debug printing, thereby overwriting the timestamp buffer.
3892 Debugging no longer uses the tod_stamp() function when +timestamp is set.
3893
3894 PH/08 When the original message was included in an autoreply transport, it
3895 always said "this is a copy of the message, including all the headers",
3896 even if body_only or headers_only was set. It now gives an appropriate
3897 message.
3898
3899 PH/09 Applied a patch from the Sieve maintainer which:
3900
3901 o fixes some comments
3902 o adds the (disabled) notify extension core
3903 o adds some debug output for the result of if/elsif tests
3904 o points to the current vacation draft in the documentation
3905 and documents the missing references header update
3906
3907 and most important:
3908
3909 o fixes a bug in processing the envelope test (when testing
3910 multiple envelope elements, the last element determined the
3911 result)
3912
3913 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
3914 Electronic Mail") by including:
3915
3916 Auto-submitted: auto-generated
3917
3918 in the messages that it generates (bounce messages and others, such as
3919 warnings). In the case of bounce messages for non-SMTP messages, there was
3920 also a typo: it was using "Auto_submitted" (underscore instead of
3921 hyphen). Since every message generated by Exim is necessarily in response
3922 to another message, thes have all been changed to:
3923
3924 Auto-Submitted: auto-replied
3925
3926 in accordance with these statements in the RFC:
3927
3928 The auto-replied keyword:
3929
3930 - SHOULD be used on messages sent in direct response to another
3931 message by an automatic process,
3932
3933 - MUST NOT be used on manually-generated messages,
3934
3935 - MAY be used on Delivery Status Notifications (DSNs) and Message
3936 Disposition Notifications (MDNs),
3937
3938 - MUST NOT be used on messages generated by automatic or periodic
3939 processes, except for messages which are automatic responses to
3940 other messages.
3941
3942 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
3943 to the default Received: header definition.
3944
3945 PH/12 Added log selector acl_warn_skipped (default on).
3946
3947 PH/13 After a successful wildlsearch lookup, discard the values of numeric
3948 variables because (a) they are in the wrong storage pool and (b) even if
3949 they were copied, it wouldn't work properly because of the caching.
3950
3951 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
3952 checking when decoding. Apparently there are clients that generate
3953 overlong encoded strings. Why am I not surprised?
3954
3955 PH/15 If the first argument of "${if match_address" was not empty, but did not
3956 contain an "@" character, Exim crashed. Now it writes a panic log message
3957 and treats the condition as false.
3958
3959 PH/16 In autoreply, treat an empty string for "once" the same as unset.
3960
3961 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
3962 extension "envelope-auth". The code is finished and in agreement with
3963 other implementations, but there is no documentation so far and in fact,
3964 nobody wrote the draft yet. This extension is currently #undef'ed, thus
3965 not changing the active code.
3966
3967 Print executed "if" and "elsif" statements when debugging is used. This
3968 helps a great deal to understand what a filter does.
3969
3970 Document more things not specified clearly in RFC3028. I had all this
3971 sorted out, when out of a sudden new issues came to my mind. Oops."
3972
3973 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
3974 (Bugzilla #53).
3975
3976 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
3977 canonical form (as documented). However, after a host name lookup from
3978 the IP address, check_host() was doing a simple string comparison with
3979 addresses acquired from the DNS when checking that the found name did
3980 have the original IP as one of its addresses. Since any found IPv6
3981 addresses are likely to be in abbreviated form, the comparison could
3982 fail. Luckily, there already exists a function for doing the comparison
3983 by converting both addresses to binary, so now that is used instead of
3984 the text comparison.
3985
3986 PH/20 There was another similar case to PH/19, when a complete host name was
3987 given in a host list; looking up its IP address could give an abbreviated
3988 form, whereas the current host's name might or might not be abbreviated.
3989 The same fix has been applied.
3990
3991
3992 Exim version 4.54
3993 -----------------
3994
3995 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
3996 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
3997 It now does.
3998
3999 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
4000 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
4001
4002 PH/03 Typo: missing ".o" in src/pcre/Makefile.
4003
4004 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
4005 header line, restrict the check to what is listed in RFCs 2369 and 2929.
4006 Also, for "Auto-Submitted", treat anything other than "no" as
4007 non-personal, in accordance with RFC 3834. (Previously it treated
4008 anything starting "auto-" as non-personal.)
4009
4010 TF/01 The control=submission/name=... option had a problem with syntax
4011 errors if the name included a slash character. The /name= option
4012 now slurps the rest of the string, so it can include any characters
4013 but it must come last in the list of options (after /sender_retain
4014 or /domain=).
4015
4016 PH/05 Some modifications to the interface to the fake nameserver for the new
4017 testing suite.
4018
4019
4020
4021 Exim version 4.53
4022 -----------------
4023
4024 TK/01 Added the "success_on_redirect" address verification option. See
4025 NewStuff for rationale and an example.
4026
4027 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
4028
4029 PH/02 Patch to exigrep to allow it to work on syslog lines.
4030
4031 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
4032 fread() to skip over the body file's header line, because in Cygwin the
4033 header line is locked and is inaccessible.
4034
4035 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
4036 co-exist for some time) to make it clear that it is the Exim ID that is
4037 referenced, not the Message-ID: header line.
4038
4039 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
4040 string_format() function, because snprintf() does not exist on all
4041 operating systems.
4042
4043 PH/06 The use of forbid_filter_existstest now also locks out the use of the
4044 ${stat: expansion item.
4045
4046 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
4047 protocol synchronization error", to keep the pedants happy.
4048
4049 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
4050 well as for IRIX systems, when gcc is being used. See the host.c source
4051 file for comments.
4052
4053 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
4054
4055 PH/10 Named domain lists were not working if used in a queue_smtp_domains
4056 setting.
4057
4058 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
4059 transport and to the smtp transport in LMTP mode.
4060
4061 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
4062
4063 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
4064 run a filter in a subprocess. This could lead to confusion in subsequent
4065 lookups in the parent process. There should also be a search_tidyup() at
4066 the end of the subprocess.
4067
4068 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
4069 only if the host matched helo_try_verify_hosts, which caused the
4070 verification to occur when the EHLO/HELO command was issued. The ACL just
4071 tested the remembered result. Now, if a previous verification attempt has
4072 not happened, "verify = helo" does it there and then.
4073
4074 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
4075
4076 TK/03 Fix log output including CR from clamd.
4077
4078 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
4079 exist provoked a memory error which could cause a segfault.
4080
4081 PH/15 Installed PCRE 6.2
4082
4083 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
4084
4085 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
4086 of the problem. Specifically, suggested +O2 rather than +O1 for the
4087 HP-UX compiler.
4088
4089 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
4090
4091 PH/20 If a delivery was routed to a non-standard port by means of an SRV
4092 record, the port was not correctly logged when the outgoing_port log
4093 selector was set (it logged the transort's default port).
4094
4095 PH/21 Added support for host-specific ports to manualroute, queryprogram,
4096 fallback_hosts, and "hosts" in the smtp transport.
4097
4098 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
4099 host errors such as "Connection refused".
4100
4101 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
4102 authentication with radiusclient 0.4.9:
4103
4104 - Error returned from rc_read_config was caught wrongly
4105 - Username/password not passed on to radius server due to wrong length.
4106
4107 The presumption is that some radiusclient API changes for 4.51/PH/17
4108 were not taken care of correctly. The code is still untested by me (my
4109 Linux distribution still has 0.3.2 of radiusclient), but it was
4110 contributed by a Radius user.
4111
4112 PH/24 When doing a callout, the value of $domain wasn't set correctly when
4113 expanding the "port" option of the smtp transport.
4114
4115 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
4116 while reading a MIME header. Thanks to Tom Hughes for a patch.
4117
4118 PH/24 Include config.h inside local_scan.h so that configuration settings are
4119 available.
4120
4121 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
4122 that in an ACL for RCPT (for example), you can examine exactly what was
4123 received.
4124
4125 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
4126 commands, but it was not correctly comparing the address with the actual
4127 client host address. Thus, it would show the EHLO address in Received:
4128 header lines when this was not necessary.
4129
4130 PH/27 Added the % operator to ${eval:}.
4131
4132 PH/28 Exim tries to create and chdir to its spool directory when it starts;
4133 it should be ignoring failures (because with -C, for example, it has lost
4134 privilege). It wasn't ignoring creation failures other than "already
4135 exists".
4136
4137 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
4138 -bV or -d is used.
4139
4140 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
4141 because an input line was too long, either on its own, or by virtue of
4142 too many continuations, the temporary file was not being removed, and the
4143 return code was incorrect.
4144
4145 PH/31 Missing "BOOL" in function definition in filtertest.c.
4146
4147 PH/32 Applied Sieve patches from the maintainer.
4148
4149 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
4150
4151 PH/33 Added "verify = not_blind".
4152
4153 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
4154 Local/Makefile (with some defaults set). These are used in built scripts
4155 such as exicyclog, but they have never been used in the exim_install
4156 script (though there are many overriding facilities there). I have
4157 arranged that the exim_install script now takes note of these two
4158 settings.
4159
4160 PH/35 Installed configuration files for Dragonfly.