More checks on header line length during reception
[exim.git] / doc / doc-txt / ChangeLog
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495ae4b0 1Change log file for Exim from version 4.21
f988ce57 2------------------------------------------
446415f5
HSHR
3This document describes *changes* to previous versions, that might
4affect Exim's operation, with an unchanged configuration file. For new
5options, and new features, see the NewStuff file next to this ChangeLog.
495ae4b0 6
4c57a40e 7
d99f54e4
JH
8Exim version 4.92
9-----------------
10
9723f966
JH
11JH/01 Remove code calling the customisable local_scan function, unless a new
12 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
13
14JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
64b67b65
JH
15 non-signal-safe functions being used.
16
17JH/03 Bug 2269: When presented with a received message having a stupidly large
18 number of DKIM-Signature headers, disable DKIM verification to avoid
19 a resource-consumption attack. The limit is set at twenty.
9723f966 20
ea7b1f16
JH
21JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
22 report of oldest_pass in ${authres } in consequence, and separate out
23 some descriptions of reasons for verification fail.
24
cfbb0d24
JH
25JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
26 files in the spool were present and unlocked. A queue-runner could spot
27 them, resulting in a duplicate delivery. Fix that by doing the unlock
0488984d
JH
28 after the unlink. Investigation by Tim Stewart. Take the opportunity to
29 add more error-checking on spoolfile handling while that code is being
cfbb0d24
JH
30 messed with.
31
85defcf0
PP
32PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
33 No known attacks, no CVE, this is defensive hardening.
34
1bd642c2
JH
35JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
36 a queue-runner could start a delivery while other operations were ongoing.
37 Cutthrough delivery was a common victim, resulting in duplicate delivery.
38 Found and investigated by Tim Stewart. Fix by using the open message data
39 file handle rather than opening another, and not locally closing it (which
40 releases a lock) for that case, while creating the temporary .eml format
41 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
42
2ddb4094
JH
43JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
44 $sender_verify_failure/$recipient_verify_failure to "random".
45
1613fd68
JH
46JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
47 legitimate.
48
e6057245
JH
49JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
50 Previously this would segfault.
51
7b9822bf
JH
52JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
53 segfault.
54
d8d9f930
JH
55JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
56 like zero, since the resolver should be doing this for us, But we need one
57 as a CNAME but no MX presence gets the CNAME returned; we need to check
58 that doesn't point to an MX to declare it "no MX returned" rather than
59 "error, loop". A new main option is added so the older capability of
60 following some limited number of chain links is maintained.
61
61e3f250
JH
62JH/12 Add client-ip info to non-pass iprev ${authres } lines.
63
7a8b9519
JH
64JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
65 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
66 now-deprecated earlier definitions used only specified the range up to TLS
67 1.2 (in the older-version library docs).
68
49e56fb3
JH
69JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
70
74f1a423
JH
71JH/15 Rework TLS client-side context management. Stop using a global, and
72 explicitly pass a context around. This enables future use of TLS for
73 connections to service-daemons (eg. malware scanning) while a client smtp
74 connection is using TLS; with cutthrough connections this is quite likely.
75
5054c4fd 76JH/16 Fix ARC verification to do AS checks in reverse order.
611b1961
JH
77
78JH/17 Support a "tls" option on the ${readsocket } expansion item.
5054c4fd 79
946515bf
JH
80JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
81 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
82 Previously the "utf8" would be re-prepended for every additional message.
83
8c34c611
JH
84JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
85 Previously thery were accepted, resulting in issues when attempting to
86 forward messages to a non-supporting MTA.
87
1bca4f5f
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88PP/02 Let -n work with printing macros too, not just options.
89
8a6b4e02
JH
90JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
91 one parent address was copied, and bogus data was used at delivery-logging
92 time. Either a crash (after delivery) or bogus log data could result.
93 Discovery and analysis by Tim Stewart.
94
0a682b6c
PP
95PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
96 Previously if the string ended mid-character, we did not insert the
97 promised '?' replacement.
98
c2c451ac
PP
99PP/04 Documentation: current string operators work on bytes, not codepoints.
100
8768d548
JH
101JH/21 Change as many as possible of the global flags into one-bit bitfields; these
102 should pack well giving a smaller memory footprint so better caching and
103 therefore performance. Group the declarations where this can't be done so
104 that the byte-sized flag variables are not interspersed among pointer
105 variables, giving a better chance of good packing by the compiler.
106
5455f548
JH
107JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
108 non-null, to avoid issues with sites running BATV. Previously reports were
109 sent with an empty envelope sender so looked like bounces.
110
25beaee4
MK
111JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
112 The ignore_error flag wasn't being returned from the filter subprocess so
113 was not set for later routers. Investigation and fix by Matthias Kurz.
114
7ea1237c 115JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
570cb1bd 116 and a msg:complete for the whole, when a message is manually removed using
7ea1237c
MK
117 -Mrm. Developement by Matthias Kurz, hacked on by JH.
118
ebda598a
JH
119JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
120 a "Gnu special" function, asprintf() in the DB utility binary builds; I
121 hope that is portable enough.
122
570cb1bd
JH
123JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
124 requiring a known-CA anchor certificate; make it now rely entirely on the
125 TLSA as an anchor. Checking the name on the leaf cert against the name
126 on the A-record for the host is still done for TA (but not for EE mode).
127
eb58ddf5
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128JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
129 included in delivery lines for non-proxied connections, when compiled with
130 SUPPORT_SOCKS and running with proxy logging enabled.
131
ffbc20ed
MK
132JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
133 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
134 move the existing event to fire before the normal logging of message
135 failure so that custom logging is bracketed by normal logging.
136
4e928780
MK
137JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
138 msg:fail:internal event. Developement by Matthias Kurz.
139
75c121f0 140JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
059f2ace 141 far too small for todays use of crypto signatures stored there. Go all
75c121f0
JH
142 the way to the max DNS message size of 64kB, even though this might be
143 overmuch for IOT constrained device use.
144
e30f4f43
JH
145JH/31 Fix a bad use of a copy function, which could be used to pointlessly
146 copy a string over itself. The library routine is documented as not
147 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
148
a45431fa
JH
149JH/32 For main options check_spool_space and check_inode_space, where the
150 platform supports 64b integers, support more than the previous 2^31 kB
151 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
152 the previous G, M, k.
153
c0fb53b7
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154JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
155 $authenticated_fail_id variable on authentication failure. Previously
156 it was unset.
157
6aac3239
JH
158JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
159 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
160 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
161 GNUTLS_SEC_PARAM_MEDIUM.
162
5a2a0989
JH
163JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server
164 side. Previously we would continue as if no SNI had been received.
165
de6f74f2 166JH/36 Harden the handling of string-lists. When a list consisted of a sole
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167 "<" character, which should be a list-separator specification, we walked
168 off past the nul-terimation.
169
de6f74f2
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170JH/37 Bug 2341: Send "message delayed" warning MDNs (restricted to external
171 causes) even when the retry time is not yet met. Previously they were
172 not, meaning that when (say) an account was over-quota and temp-rejecting,
173 and multiple senders' messages were queued, only one sender would get
174 notified on each configured delay_warning cycle.
175
aa6e77af 176JH/38 Bug 2351: Log failures to extract envelope addresses from message headers.
aaf3e414 177
25fa0868
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178JH/39 OpenSSL: clear the error stack after an SSL_accept(). With anon-auth
179 cipher-suites, an error can be left on the stack even for a succeeding
180 accept; this results in impossible error messages when a later operation
181 actually does fail.
182
cb6bd80f
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183AM/01 Bug 2359: GnuTLS: repeat lowlevel read and write operations while they
184 return error codes indicating retry. Under TLS1.3 this becomes required.
185
186JH/40 Fix the feature-cache refresh for EXPERIMENTAL_PIPE_CONNECT. Previously
187 it only wrote the new authenticators, resulting in a lack of tracking of
188 peer changes of ESMTP extensions until the next cache flush.
518b70e9 189
56ac062a
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190JH/41 Fix the loop reading a message header line to check for integer overflow,
191 and more-often against header_maxsize. Previously a crafted message could
192 induce a crash of the recive process; now the message is cleanly rejected.
193
9723f966 194
bb264f6b
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195Exim version 4.91
196-----------------
459fca58 197
c39c8870 198GF/01 DEFER rather than ERROR on redis cluster MOVED response.
bb264f6b
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199 When redis_servers is set to a list of > 1 element, and the Redis servers
200 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
201 case of MOVED into a DEFER case instead, thus moving the query onto the
202 next server in the list. For a cluster of N elements, all N servers must
203 be defined in redis_servers.
c39c8870 204
0800ef83
GF
205GF/02 Catch and remove uninitialized value warning in exiqsumm
206 Check for existence of @ARGV before looking at $ARGV[0]
207
459fca58
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208JH/01 Replace the store_release() internal interface with store_newblock(),
209 which internalises the check required to safely use the old one, plus
210 the allocate and data copy operations duplicated in both (!) of the
211 extant use locations.
212
944e8b37
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213JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
214 modifier. This matches the restriction on the commandline.
215
bbfb5dcd
JH
216JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
217 Previously only the last row was returned.
218
a05d3e34
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219JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
220 we assumed that tags in the header were well-formed, and parsed the
221 element content after inspecting only the first char of the tag.
222 Assumptions at that stage could crash the receive process on malformed
223 input.
224
ce93c6d8
JH
225JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
226 While running the DKIM ACL we operate on the Permanent memory pool so that
227 variables created with "set" persist to the DATA ACL. Also (at any time)
228 DNS lookups that fail create cache records using the Permanent pool. But
229 expansions release any allocations made on the current pool - so a dnsdb
230 lookup expansion done in the DKIM ACL releases the memory used for the
231 DNS negative-cache, and bad things result. Solution is to switch to the
232 Main pool for expansions.
233 While we're in that code, add checks on the DNS cache during store_reset,
234 active in the testsuite.
235 Problem spotted, and debugging aided, by Wolfgang Breyha.
236
2577f55f
JH
237JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
238 When none of the hosts presented to a transport match an already-open
239 connection, close it and proceed with the list. Previously we would
240 queue the message. Spotted by Lena with Yahoo, probably involving
241 round-robin DNS.
242
5b6f7658
JH
243JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
244 Previously a spurious "250 OK id=" response was appended to the proper
245 failure response.
246
c11d665d
JH
247JH/08 The "support for" informational output now, which built with Content
248 Scanning support, has a line for the malware scanner interfaces compiled
249 in. Interface can be individually included or not at build time.
e5ba8aa7
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250
251JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
252 by the template makefile "src/EDITME". The "STREAM" support for an older
253 ClamAV interface method is removed.
c11d665d 254
ba0e37b1
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255JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
256 rows affected is given instead).
257
96508de1
JH
258JH/11 The runtime Berkeley DB library version is now additionally output by
259 "exim -d -bV". Previously only the compile-time version was shown.
260
06fdb9f7
JH
261JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
262 SMTP connection. Previously, when one had more receipients than the
263 first, an abortive onward connection was made. Move to full support for
264 multiple onward connections in sequence, handling cutthrough connection
265 for all multi-message initiating connections.
266
f83a760f
JH
267JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
268 routers. Previously, a multi-recipient message would fail to match the
269 onward-connection opened for the first recipient, and cause its closure.
270
f1fed05b
JH
271JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
272 a timeout on read on a GnuTLS initiating connection, resulting in the
273 initiating connection being dropped. This mattered most when the callout
274 was marked defer_ok. Fix to keep the two timeout-detection methods
275 separate.
276
051d5efa
JH
277JH/15 Relax results from ACL control request to enable cutthrough, in
278 unsupported situations, from error to silently (except under debug)
279 ignoring. This covers use with PRDR, frozen messages, queue-only and
280 fake-reject.
281
cf3cd306
HSHR
282HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
283
744976d4
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284JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
285 metadata, resulting in a crash in free().
286
aab9a843 287PP/01 Fix broken Heimdal GSSAPI authenticator integration.
7be14582 288 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
aab9a843 289 Broken also in d185889f4, with init system revamp.
7be14582 290
83d2a861
JH
291JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
292 Previously we abruptly closed the connection after reading a malware-
293 found indication; now we go on to read the "scan ok" response line,
294 and send a quit.
295
6741531c
JH
296JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
297 ACL. Previously, a crash would result.
298
85e03244
JH
299JH/19 Speed up macro lookups during configuration file read, by skipping non-
300 macro text after a replacement (previously it was only once per line) and
301 by skipping builtin macros when searching for an uppercase lead character.
302
c0635b6d
JH
303JH/20 DANE support moved from Experimental to mainline. The Makefile control
304 for the build is renamed.
305
b808677c
JH
306JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
307 was allocated for every new TLS startup, meaning one per message. Fix
308 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
309
6678c382
JH
310JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
311 reported the original. Fix to report (as far as possible) the ACL
312 result replacing the original.
313
dec766a1
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314JH/23 Fix memory leak during multi-message connections using STARTTLS under
315 OpenSSL. Certificate information is loaded for every new TLS startup,
316 and the resources needed to be freed.
317
15ae19f9
JH
318JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
319
e6532c4a
JH
320JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
321 was not propagated.
322
2556b3c6
SA
323JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
324 DATA response info to the (existing) per-recipient response info for
325 the "C=" log element. It can have useful tracking info from the
326 destination system. Patch from Simon Arlott.
327
fc8cd529
JH
328JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
329 length value. Previously this would segfault.
330
71bb51e0
HSHR
331HS/02 Support Avast multiline protoocol, this allows passing flags to
332 newer versions of the scanner.
333
e04bfa34
JH
334JH/28 Ensure that variables possibly set during message acceptance are marked
335 dead before release of memory in the daemon loop. This stops complaints
336 about them when the debug_store option is enabled. Discovered specifically
337 for sender_rate_period, but applies to a whole set of variables.
c232fc99
JH
338 Do the same for the queue-runner and queue-list loops, for variables set
339 from spool message files. Do the same for the SMTP per-message loop, for
340 certain variables indirectly set in ACL operations.
e04bfa34 341
ecce6d9a
JH
342JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
343 as a multi-recipient message from a mailinglist manager). The coding had
344 an arbitrary cutoff number of characters while checking for more input;
345 enforced by writing a NUL into the buffer. This corrupted long / fast
346 input. The problem was exposed more widely when more pipelineing of SMTP
347 responses was introduced, and one Exim system was feeding another.
348 The symptom is log complaints of SMTP syntax error (NUL chars) on the
349 receiving system, and refused recipients seen by the sending system
350 (propating to people being dropped from mailing lists).
351 Discovered and pinpointed by David Carter.
352
c9cf9ac4
JH
353JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
354 replaced by the ${authresults } expansion.
355
b3b37076
JH
356JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
357
830832c9
HSHR
358HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
359 allows proper process termination in container environments.
360
f64e8b5f
JH
361JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
362 Previously the "final dot" had a newline after it; ensure it is CR,LF.
363
8f0776b5
JH
364JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
365 and "err_perm", deprecated since 4.83 when the RFC-defined words
366 "temperror" and "permerror" were introduced.
367
857eaf37
JH
368JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
369 transport-filters or DKIM-signing. The restriction was lost in the
370 consolidation of verify-callout and delivery SMTP handling.
5add7dc4 371 Extend the restriction to also cover ARC-signing.
857eaf37 372
c85476e9
JH
373JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
374 in defer=pass mode supply a 450 to the initiator. Previously the message
375 would be spooled.
376
405074ad
PP
377PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
378 tls_require_ciphers is used as before.
379
eb445b04
HSHR
380HS/03 Malware Avast: Better match the Avast multiline protocol. Add
381 "pass_unscanned". Only tmpfails from the scanner are written to
382 the paniclog, as they may require admin intervention (permission
383 denied, license issues). Other scanner errors (like decompression
384 bombs) do not cause a paniclog entry.
ad93c40f 385
d342446f
JH
386JH/36 Fix reinitialisation of DKIM logging variable between messages.
387 Previously it was possible to log spurious information in receive log
388 lines.
389
a28050f8
JH
390JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
391 triggered odd behaviour from Outlook Express clients.
392
ddd16464
PP
393PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
394 suffix list.
395
321ef002
JH
396JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
397 since the IETF WG has not yet settled on that versus the original
398 "bare" representation.
399
3203e7ba
JH
400JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
401 Previously the millisecond value corrupted the output.
402 Fix also for syslog_pid=no and log_selector +pid, for which the pid
403 corrupted the output.
404
bbfb5dcd 405
acfc18c3
PP
406Exim version 4.90
407-----------------
408
409JH/01 Rework error string handling in TLS interface so that the caller in
410 more cases is responsible for logging. This permits library-sourced
411 string to be attached to addresses during delivery, and collapses
412 pairs of long lines into single ones.
413
856d1e16
PP
414PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
415 during configuration. Wildcards are allowed and expanded.
416
b9df1829
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417JH/02 Rework error string handling in DKIM to pass more info back to callers.
418 This permits better logging.
419
875512a3
JH
420JH/03 Rework the transport continued-connection mechanism: when TLS is active,
421 do not close it down and have the child transport start it up again on
422 the passed-on TCP connection. Instead, proxy the child (and any
423 subsequent ones) for TLS via a unix-domain socket channel. Logging is
424 affected: the continued delivery log lines do not have any DNSSEC, TLS
5013d912 425 Certificate or OCSP information. TLS cipher information is still logged.
875512a3 426
fc3f96af
JH
427JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
428 identical IP addresses on different listening ports. Will also affect
429 "exiwhat" output.
430
98913c8e
BK
431PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
432 add noisy ifdef guards to special-case this sillyness.
433 Patch from Bernd Kuhls.
434
8d909960
JH
435JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
436 than 255 are no longer allowed.
437
7006ee24
JH
438JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
439 Disable the session-cache too, which might reduce our load. Since we
440 currrectly use a new context for every connection, both as server and
441 client, there is no benefit for these.
442 GnuTLS appears to not support tickets server-side by default (we don't
443 call gnutls_session_ticket_enable_server()) but client side is enabled
444 by default on recent versions (3.1.3 +) unless the PFS priority string
445 is used (3.2.4 +).
446
6e411084
PP
447PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
448 <https://reproducible-builds.org/specs/source-date-epoch/>.
449
4c2471ca
JH
450JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
451 the check for any unsuccessful recipients did not notice the limit, and
452 erroneously found still-pending ones.
453
4e910c01
JH
454JH/08 Pipeline CHUNKING command and data together, on kernels that support
455 MSG_MORE. Only in-clear (not on TLS connections).
456
42055a33
JH
457JH/09 Avoid using a temporary file during transport using dkim. Unless a
458 transport-filter is involved we can buffer the headers in memory for
459 creating the signature, and read the spool data file once for the
460 signature and again for transmission.
461
eeb35890
JH
462JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
463 4.77 as the kernel support then wasn't solid, having issues in 64bit
7d758a6a 464 mode. Now, it's been long enough. Add support for FreeBSD also.
eeb35890 465
b7d3afcf
JH
466JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
467 case where the routing stage had gathered several addresses to send to
468 a host before calling the transport for the first, we previously failed
469 to close down TLS in the old transport process before passing the TCP
470 connection to the new process. The new one sent a STARTTLS command
471 which naturally failed, giving a failed delivery and bloating the retry
472 database. Investigation and fix prototype from Wolfgang Breyha.
473
40525d07
JH
474JH/12 Fix check on SMTP command input synchronisation. Previously there were
475 false-negatives in the check that the sender had not preempted a response
476 or prompt from Exim (running as a server), due to that code's lack of
a5ffa9b4 477 awareness of the SMTP input buffering.
40525d07 478
f33875c3
PP
479PP/04 Add commandline_checks_require_admin option.
480 Exim drops privileges sanely, various checks such as -be aren't a
481 security problem, as long as you trust local users with access to their
482 own account. When invoked by services which pass untrusted data to
483 Exim, this might be an issue. Set this option in main configuration
484 AND make fixes to the calling application, such as using `--` to stop
485 processing options.
486
a5ffa9b4
JH
487JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
488 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
489 responses to those, into a single TLS record each way (this usually means
490 a single packet). As a side issue, smtp_enforce_sync now works on TLS
491 connections.
925ac8e4 492
6600985a
PP
493PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
494 affects you only if you're dancing at the edge of the param size limits.
495 If you are, and this message makes sense to you, then: raise the
496 configured limit or use OpenSSL 1.1. Nothing we can do for older
497 versions.
498
ac4d558b
JH
499JH/14 For the "sock" variant of the malware scanner interface, accept an empty
500 cmdline element to get the documented default one. Previously it was
501 inaccessible.
502
e69636bc
JH
503JH/15 Fix a crash in the smtp transport caused when two hosts in succession
504 are unsuable for non-message-specific reasons - eg. connection timeout,
505 banner-time rejection.
506
a843a57e
JH
507JH/16 Fix logging of delivery remote port, when specified by router, under
508 callout/hold.
509
8e041ae0
PP
510PP/06 Repair manualroute's ability to take options in any order, even if one
511 is the name of a transport.
833c70bc
PP
512 Fixes bug 2140.
513
35a04365
HSHR
514HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
515
4226691b
JH
516JH/17 Change the list-building routines interface to use the expanding-string
517 triplet model, for better allocation and copying behaviour.
518
d185889f
JH
519JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
520 Previously it was constructed the first time a possibly-matching string
521 was met in the configuration file input during startup; now it is done
522 during compilation.
523
0a6c178c
JH
524JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
525 compatible one, to avoid the (poorly documented) possibility of a config
526 file in the working directory redirecting the DB files, possibly correpting
02745400 527 some existing file. CVE-2017-10140 assigned for BDB.
0a6c178c 528
fae8970d
JH
529JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
530 cache-hot. Previously, although the result was properly cached, the
531 initial verify call returned a defer.
532
ad1a76fe 533JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
14de8063
JH
534 the main verify for receipient in uncached-mode.
535
ad1a76fe
JH
536JH/22 Retire historical build files to an "unsupported" subdir. These are
537 defined as "ones for which we have no current evidence of testing".
538
135e9496
JH
539JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
540 if present. Previously it was ignored.
541
f2ed27cf
JH
542JH/24 Start using specified-initialisers in C structure init coding. This is
543 a C99 feature (it's 2017, so now considered safe).
544
7eb0e5d2
JH
545JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
546 if was a fixed-sized field and bitmask ops via macros; it is now more
547 extensible.
548
4f9f4be4
549PP/07 GitHub PR 56: Apply MariaDB build fix.
550 Patch provided by Jaroslav Škarvada.
551
dc4de9cc
PP
552PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
553 during Coverity cleanups [4.87 JH/47]
554 Diagnosis and fix provided by Michael Fischer v. Mollard.
555
ea18931d
JH
556JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
557 the right size to place the terminating semicolon on its own folded
558 line, the header hash was calculated to an incorrect value thanks to
559 the (relaxed) space the fold became.
560
0768462d 561HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
2cee425a
HSHR
562 and confused the parent.
563
848214f7
JH
564JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
565 which could crash as a result. This could lead to undeliverable messages.
566
9e0ed81f
JH
567JH/28 Logging: "next input sent too soon" now shows where input was truncated
568 for log purposes.
569
2540f2f8
JH
570JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
571 matters on fast-turnover and PID-randomising systems, which were getting
572 out-of-order delivery.
573
e5ab0ba9
JH
574JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
575 a possibly-overlapping copy. The symptom was that "Remote host closed
576 connection in response to HELO" was logged instead of the actual 4xx
577 error for the HELO.
578
e99a3a6c
JH
579JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
580 Previously only that bufferd was discarded, resulting in SYMTP command
581 desynchronisation.
582
18067c75
JH
583JH/32 DKIM: when a message has multiple signatures matching an identity given
584 in dkim_verify_signers, run the dkim acl once for each. Previously only
585 one run was done. Bug 2189.
586
72934ba7
JH
587JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
588 "panic the current process" to "deliberately defer". The panic log is
589 still written with the problem list name; the mail and reject logs now
590 get a temp-reject line for the message that was being handled, saying
591 something like "domains check lookup or other defer". The SMTP 451
592 message is still "Temporary local problem".
593
625667b6
JH
594JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
595 A crafted sequence of BDAT commands could result in in-use memory beeing
b488395f
JH
596 freed. CVE-2017-16943.
597
598HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
599 from SMTP input. Previously it was always done; now only done for DATA
600 and not BDAT commands. CVE-2017-16944.
625667b6 601
d21bf202
JH
602JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
603 to the message (such as an overlong header line). Previously this was
604 not done and we did not exit BDAT mode. Followon from the previous item
605 though a different problem.
606
acfc18c3 607
fd047340 608Exim version 4.89
acfc18c3 609-----------------
4c57a40e 610
9427e879 611JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
4c04137d 612 than -2003 did; needs libidn2 in addition to libidn.
fd047340 613
7b283890
JH
614JH/02 The path option on a pipe transport is now expanded before use.
615
4c57a40e
PP
616PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
617 Patch provided by "Björn", documentation fix added too.
618
5d036699
JH
619JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
620 missing a wire-to-host endian conversion.
621
f4630439
JH
622JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
623 close after a BDAT command line could be taken as a following command,
624 giving a synch failure. Fix by only checking for synch immediately
625 before acknowledging the chunk.
626
f988ce57
JS
627PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
628 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
629 macro. Patches provided by Josh Soref.
630
bd8fbe36
JH
631JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
632 Previously we did not; the RFC seems ambiguous and VRFY is not listed
633 by IANA as a service extension. However, John Klensin suggests that we
634 should.
635
636JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
b895f4b2
JH
637 the dkim code may be unix-mode line endings rather than smtp wire-format
638 CRLF, so prepend a CR to any bare LF.
fd047340 639
bd8fbe36 640JH/07 Rationalise the coding for callout smtp conversations and transport ones.
902fbd69
JH
641 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
642
bd8fbe36
JH
643JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
644 the first were themselves being wrongly included in the feed into dkim
645 processing; with most chunk sizes in use this resulted in an incorrect
646 body hash calculated value.
647
eea19017
JH
648JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
649 DKIM signature block, for verification. Although advised against by
650 standards it is specifically not ruled illegal.
651
44e6651b
JH
652JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
653
654JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
655 missing a body hash (the bh= tag).
656
657JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
658 It seems that HAProxy sends the Proxy Protocol information in clear and
659 only then does a TLS startup, so do the same.
660
661JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
662 TCP connections (such as for Spamd) unless the daemon successfully set
663 Fast Open mode on its listening sockets. This fixes breakage seen on
664 too-old kernels or those not configured for Fast Open, at the cost of
665 requiring both directions being enabled for TFO, and TFO never being used
666 by non-daemon-related Exim processes.
667
668JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
669 endings, at least on the first header line. Try to canonify any that get
670 past that check, despite the cost.
671
b6040544
JH
672JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
673 now limited to an arbitrary five deep, while parsing addresses with the
674 strip_excess_angle_brackets option enabled.
675
f700ea4d
PP
676PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
677 instead leave the unprompted TLS handshake in socket buffer for the
678 TLS library to consume.
679
da88acae
PP
680PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
681
f6ef9370
PP
682PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
683
90341c71
JH
684JH/16 Drop variables when they go out of scope. Memory management drops a whole
685 region in one operation, for speed, and this leaves assigned pointers
686 dangling. Add checks run only under the testsuite which checks all
687 variables at a store-reset and panics on a dangling pointer; add code
688 explicitly nulling out all the variables discovered. Fixes one known
689 bug: a transport crash, where a dangling pointer for $sending_ip_address
690 originally assigned in a verify callout, is re-used.
691
1ec2ab36
PP
692PP/06 Drop '.' from @INC in various Perl scripts.
693
694PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
695
696PP/08 Reduce a number of compilation warnings under clang; building with
697 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
698 should be warning-free.
699
8b2b9480
PP
700JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
701
702HS/01 Fix portability problems introduced by PP/08 for platforms where
703 realloc(NULL) is not equivalent to malloc() [SunOS et al].
704
d953610f
HSHR
705HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
706 chunk. This allows us to accept broken chunked messages. We need a more
707 general solution here.
708
7dc5f827
PP
709PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
710 already-broken messages in the queue.
711
4bb432cb
PP
712JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
713
3b1a84c8
PP
714JH/19 Fix reference counting bug in routing-generated-address tracking.
715
902fbd69 716
8d042305
JH
717Exim version 4.88
718-----------------
4c57a40e 719
9094b84b
JH
720JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
721 supports it and a size is available (ie. the sending peer gave us one).
8d042305 722
03d5892b
JH
723JH/02 The obsolete acl condition "demime" is removed (finally, after ten
724 years of being deprecated). The replacements are the ACLs
725 acl_smtp_mime and acl_not_smtp_mime.
726
4b0fe319
JH
727JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
728 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
729 or even an in-clear connection were permitted. Now, if the host lookup
730 was dnssec and dane was requested then the host is only used if the
731 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
732 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
733 if one fails this test.
734 This means that a poorly-configured remote DNS will make it incommunicado;
735 but it protects against a DNS-interception attack on it.
736
789f8a4f
JH
737JH/04 Bug 1810: make continued-use of an open smtp transport connection
738 non-noisy when a race steals the message being considered.
739
23bb6982 740JH/05 If main configuration option tls_certificate is unset, generate a
f59aaaaa 741 self-signed certificate for inbound TLS connections.
23bb6982 742
0bd1b1ed 743JH/06 Bug 165: hide more cases of password exposure - this time in expansions
f42deca9 744 in rewrites and routers.
0bd1b1ed 745
20b9a2dc
JH
746JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
747 and logged a warning sing 4.83; now they are a configuration file error.
748
05392bbc
JH
749JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
750 (lacking @domain). Apply the same qualification processing as RCPT.
751
1a6230a3
JH
752JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
753
cfab9d68
JH
754JH/10 Support ${sha256:} applied to a string (as well as the previous
755 certificate).
756
98c82a3d
JH
757JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
758 a cutthrough deliver is pending, as we always want to make a connection.
759 This also avoids re-routing the message when later placing the cutthrough
760 connection after a verify cache hit.
761 Do not update it with the verify result either.
762
763JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
764 when routing results in more than one destination address.
765
ae8386f0
JH
766JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
767 signing (which inhibits the cutthrough capability). Previously only
768 the presence of an option was tested; now an expansion evaluating as
769 empty is permissible (obviously it should depend only on data available
770 when the cutthrough connection is made).
771
0d9fa8c0
JH
772JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
773 the relevant preceding SMTP command did not note the pipelining mode.
774
3581f321
JH
775JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
776 Previously they were not counted.
777
ef3a1a30
JH
778JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
779 as one having no matching records. Previously we deferred the message
780 that needed the lookup.
781
4c04137d 782JH/17 Fakereject: previously logged as a normal message arrival "<="; now
27b9e5f4
JH
783 distinguished as "(=".
784
1435d4b2
JH
785JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
786 for missing MX records. Previously it only worked for missing A records.
787
eea0defe
JB
788JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
789
790JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
791 after the data-go-ahead and data-ack. Patch from Jason Betts.
860cdda2 792
4c04137d 793JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
72a201e2
TM
794 even for a "none" policy. Patch from Tony Meyer.
795
1c788856
JH
796JH/22 Fix continued use of a connection for further deliveries. If a port was
797 specified by a router, it must also match for the delivery to be
798 compatible.
799
e3b1f624
JH
800JH/23 Bug 1874: fix continued use of a connection for further deliveries.
801 When one of the recipients of a message was unsuitable for the connection
802 (has no matching addresses), we lost track of needing to mark it
803 deferred. As a result mail would be lost.
804
a57ce043
JH
805JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
806
f59aaaaa 807JH/25 Decoding ACL controls is now done using a binary search; the source code
2d009132
JH
808 takes up less space and should be simpler to maintain. Merge the ACL
809 condition decode tables also, with similar effect.
d7bed771 810
d1f9fb42
JH
811JH/26 Fix problem with one_time used on a redirect router which returned the
812 parent address unchanged. A retry would see the parent address marked as
813 delivered, so not attempt the (identical) child. As a result mail would
814 be lost.
815
92b0827a
JH
816JH/27 Fix a possible security hole, wherein a process operating with the Exim
817 UID can gain a root shell. Credit to http://www.halfdog.net/ for
818 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
819 itself :(
820
ddf1b11a
JH
821JH/28 Enable {spool,log} filesystem space and inode checks as default.
822 Main config options check_{log,spool}_{inodes,space} are now
823 100 inodes, 10MB unless set otherwise in the configuration.
824
3cc3f762
JH
825JH/29 Fix the connection_reject log selector to apply to the connect ACL.
826 Previously it only applied to the main-section connection policy
827 options.
828
ae5afa61
JH
829JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
830
317e40ac
PP
831PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
832 by me. Added RFC7919 DH primes as an alternative.
833
8b0fb68e
PP
834PP/02 Unbreak build via pkg-config with new hash support when crypto headers
835 are not in the system include path.
836
ad7fc6eb 837JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
f59aaaaa 838 GnuTLS, when a session startup failed (eg because the client disconnected)
ad7fc6eb
JH
839 Exim did stdio operations after fclose. This was exposed by a recent
840 change which nulled out the file handle after the fclose.
ad7fc6eb 841
ee5b1e28
JH
842JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
843 signed directly by the cert-signing cert, rather than an intermediate
844 OCSP-signing cert. This is the model used by LetsEncrypt.
845
5ddc9771
JH
846JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
847
8d73599f
JH
848HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
849 an incoming connection.
850
446415f5
HSHR
851HS/02 Bug 1802: Do not half-close the connection after sending a request
852 to rspamd.
853
8e53a4fc
HSHR
854HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
855 fallback to "prime256v1".
8d042305 856
87cb4a16 857JH/34 SECURITY: Use proper copy of DATA command in error message.
4c57a40e 858 Could leak key material. Remotely exploitable. CVE-2016-9963.
87cb4a16
JH
859
860
0d9b78be
JH
861Exim version 4.87
862-----------------
4c57a40e 863
82d14d6a
JH
864JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
865 and 3.4.4 - once the server is enabled to respond to an OCSP request
866 it does even when not requested, resulting in a stapling non-aware
867 client dropping the TLS connection.
0d9b78be 868
6c6d6e48
TF
869TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
870 support variable-length bit vectors. No functional change.
871
ac881e27
TF
872TF/02 Improve the consistency of logging incoming and outgoing interfaces.
873 The I= interface field on outgoing lines is now after the H= remote
874 host field, same as incoming lines. There is a separate
875 outgoing_interface log selector which allows you to disable the
876 outgoing I= field.
877
c8899c20
JH
878JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
879 If not running log_selector +smtp_connection the mainlog would be held
880 open indefinitely after a "too many connections" event, including to a
881 deleted file after a log rotate. Leave the per net connection logging
882 leaving it open for efficiency as that will be quickly detected by the
883 check on the next write.
884
f1b81d81
HSHR
885HS/01 Bug 1671: Fix post transport crash.
886 Processing the wait-<transport> messages could crash the delivery
887 process if the message IDs didn't exist for some reason. When
888 using 'split_spool_directory=yes' the construction of the spool
889 file name failed already, exposing the same netto behaviour.
890
f38917cc
JH
891JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
892 mime_regex ACL conditions.
893
895fbaf2
JH
894JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
895 to DSN fail messages (bounces): remote IP, remote greeting, remote response
896 to HELO, local diagnostic string.
897
805bb5c3
JH
898JH/05 Downgrade message for a TLS-certificate-based authentication fail from
899 log line to debug. Even when configured with a tls authenticator many
900 client connections are expected to not authenticate in this way, so
901 an authenticate fail is not an error.
902
56c2a7be
HSHR
903HS/02 Add the Exim version string to the process info. This way exiwhat
904 gives some more detail about the running daemon.
905
4c04137d 906JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
14b3c5bc
JH
907 matter for fast-change records such as DNSBLs.
908
6f6dedcc
JH
909JH/07 Bug 1678: Always record an interface option value, if set, as part of a
910 retry record, even if constant. There may be multiple transports with
911 different interface settings and the retry behaviour needs to be kept
912 distinct.
913
0f557e90
JH
914JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
915
916JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
917
ec0eb1a3
JH
918JH/10 Bug 840: fix log_defer_output option of pipe transport
919
41e93589
JH
920JH/11 Bug 830: use same host for all RCPTS of a message, even under
921 hosts_randomize. This matters a lot when combined with mua_wrapper.
922
98b98887 923JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
376d2ec0
JH
924 ${quote_pgsql:<string>} operator.
925
98b98887
JH
926JH/13 Bug 1708: avoid misaligned access in cached lookup.
927
858e91c2
JH
928JH/14 Change header file name for freeradius-client. Relevant if compiling
929 with Radius support; from the Gentoo tree and checked under Fedora.
930
931JH/15 Bug 1712: Introduce $prdr_requested flag variable
932
6ff55e50
JH
933JH/16 Bug 1714: Permit an empty string as expansion result for transport
934 option transport_filter, meaning no filtering.
935
3b957582
JB
936JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
937
23f3dc67
JH
938JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
939 defaults to "*" (all hosts). The variable is now available when not built
4c04137d 940 with TLS, default unset, mainly to enable keeping the testsuite sane.
23f3dc67
JH
941 If a server certificate is not supplied (via tls_certificate) an error is
942 logged, and clients will find TLS connections fail on startup. Presumably
943 they will retry in-clear.
944 Packagers of Exim are strongly encouraged to create a server certificate
945 at installation time.
946
240c288f
JH
947HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
948 with the $config_file variable.
949
5ef5dd52
JB
950JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
951 in transport context, after the attempt, and per-recipient. The latter type
952 is per host attempted. The event data is the error message, and the errno
953 information encodes the lookup type (A vs. MX) used for the (first) host,
4c04137d 954 and the trailing two digits of the smtp 4xx response.
5ef5dd52 955
e161710d
GF
956GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
957 to write to mainlog (or rejectlog, paniclog) in the window between file
958 creation and permissions/ownership being changed. Particularly affects
959 installations where exicyclog is run as root, rather than exim user;
960 result is that the running daemon panics and dies.
961
a159f203
JH
962JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
963
7f06582c
JH
964JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
965 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
966 "pri" and "weight". Note that the previous implicit priority given by the
967 list order is no longer honoured.
968
4c04137d 969JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
abe1010c
JH
970 for DKIM processing.
971
f0989ec0
JH
972JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
973 by defining SUPPORT_SOCKS.
74f150bf 974
cee5f132
JH
975JH/26 Move PROXY support from Experimental to mainline, enabled for a build
976 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
e6d2a989
JH
977 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
978 variables are renamed to proxy_{local,external}_{address,port}.
cee5f132 979
8c5d388a
JH
980JH/27 Move Internationalisation support from Experimental to mainline, enabled
981 for a build by defining SUPPORT_I18N
982
2d8d625b
JH
983JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
984 of the query string, and make ${quote_redis:} do that quoting.
985
0cbf2b82
JH
986JH/29 Move Events support from Experimental to mainline, enabled by default
987 and removable for a build by defining DISABLE_EVENT.
988
f2f2c91b
JH
989JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
990
ce325893
JH
991JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
992 cached by the daemon.
993
de78e2d5
JH
994JH/32 Move Redis support from Experimental to mainline, enabled for a build
995 by defining LOOKUP_REDIS. The libhiredis library is required.
996
379ba7d0
JH
997JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
998 keys are given for lookup.
999
f444c2c7
JH
1000JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
1001 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
07c73177
JH
1002 only supported when built with TLS support. The PolarSSL SHA routines
1003 are still used when the TLS library is too old for convenient support.
f444c2c7 1004
a57b6200
JH
1005JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
1006 openssl_options), for security. OpenSSL forces this from version 1.1.0
1007 server-side so match that on older versions.
1008
07c73177 1009JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
fa01e4f8 1010 allocation for $value could be released as the expansion processing
07c73177 1011 concluded, but leaving the global pointer active for it.
fa01e4f8 1012
4f6ae5c3
JH
1013JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
1014 and to use the domains and local_parts ACL conditions.
1015
1bc460a6
JH
1016JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
1017 incorrectly not doubled on cutthrough transmission, hence seen as a
1018 body-termination at the receiving system - resulting in truncated mails.
62ac2eb7 1019 Commonly the sender saw a TCP-level error, and retransmitted the message
1bc460a6
JH
1020 via the normal store-and-forward channel. This could result in duplicates
1021 received - but deduplicating mailstores were liable to retain only the
1022 initial truncated version.
1023
ab9152ff 1024JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
df3def24 1025
67e87fcf
JH
1026JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1027
ab9152ff
JH
1028JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1029 we're in there, support oversigning also; bug 1309.
1030
af483912
JH
1031JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1032
bc3c7bb7 1033HS/04 Add support for keep_environment and add_environment options.
df3def24 1034
13559da6
JH
1035JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1036 either intentional arithmetic overflow during PRNG, or testing config-
1037 induced overflows.
1038
59eaad2b
JH
1039JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1040 delivery resulted in actual delivery. Cancel cutthrough before DATA
1041 stage.
1042
f9334a28
JH
1043JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1044 rejects a recipient: pass the reject to the originator.
1045
dc8091e7
JH
1046JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1047 Many were false-positives and ignorable, but it's worth fixing the
1048 former class.
1049
dfe7d917
JH
1050JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1051 for the new environment-manipulation done at startup. Move the routines
1052 from being local to tls.c to being global via the os.c file.
1053
93cc2d6e
JH
1054JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1055 an extract embedded as result-arg for a map, the first arg for extract
1056 is unavailable so we cannot tell if this is a numbered or keyed
1057 extraction. Accept either.
1058
13559da6 1059
9c695f6d
JH
1060Exim version 4.86
1061-----------------
4c57a40e 1062
9c695f6d
JH
1063JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1064 expanded.
1065
506900af
JH
1066JH/02 The smtp transport option "multi_domain" is now expanded.
1067
ad07e9ad
JH
1068JH/03 The smtp transport now requests PRDR by default, if the server offers
1069 it.
1070
01a4a5c5 1071JH/04 Certificate name checking on server certificates, when exim is a client,
b3ef41c9 1072 is now done by default. The transport option tls_verify_cert_hostnames
01a4a5c5
JH
1073 can be used to disable this per-host. The build option
1074 EXPERIMENTAL_CERTNAMES is withdrawn.
1075
cb1d7830 1076JH/05 The value of the tls_verify_certificates smtp transport and main options
0e0f3f56 1077 default to the word "system" to access the system default CA bundle.
cb1d7830
JH
1078 For GnuTLS, only version 3.0.20 or later.
1079
610ff438 1080JH/06 Verification of the server certificate for a TLS connection is now tried
6d580f19
JH
1081 (but not required) by default. The verification status is now logged by
1082 default, for both outbound TLS and client-certificate supplying inbound
1083 TLS connections
610ff438 1084
f926e272
JH
1085JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1086 sites use this now.
1087
50dc7409
JH
1088JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1089 Status Notification (bounce) messages are now MIME format per RFC 3464.
1090 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1091 under the control of the dsn_advertise_hosts option, and routers may
1092 have a dsn_lasthop option.
1093
0f0c8159
JH
1094JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1095 default, modifiable by a malware= option. The list separator for
23763898 1096 the options can now be changed in the usual way. Bug 68.
4e71661f 1097
1ad6489e
JH
1098JH/10 The smtp_receive_timeout main option is now expanded before use.
1099
aeaf5db3
JH
1100JH/11 The incoming_interface log option now also enables logging of the
1101 local interface on delivery outgoing connections.
1102
5032d1cf
JH
1103JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1104 if the interface and destination host and port all match.
1105
7e8360e6
JH
1106JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1107 /defer_ok option.
1108
c5f280e2
AL
1109JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1110 Patch from Andrew Lewis.
1111
fd4d8871 1112JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
dc7b3d36 1113 now supports optional time-restrictions, weighting, and priority
fd4d8871
R
1114 modifiers per server. Patch originally by <rommer@active.by>.
1115
1116JH/16 The spamd_address main option now supports a mixed list of local
2aad5761
JH
1117 and remote servers. Remote servers can be IPv6 addresses, and
1118 specify a port-range.
fd4d8871 1119
23763898
JH
1120JH/17 Bug 68: The spamd_address main option now supports an optional
1121 timeout value per server.
1122
2ad78978
JH
1123JH/18 Bug 1581: Router and transport options headers_add/remove can
1124 now have the list separator specified.
1125
8a512ed5 1126JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
cfab9d68 1127 option values.
8a512ed5 1128
82c0c8ea 1129JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
f69979cf
JH
1130 under OpenSSL.
1131
cc00f4af
JH
1132JH/21 Support for the A6 type of dns record is withdrawn.
1133
82c0c8ea
JH
1134JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1135 rather than the verbs used.
1136
b980ed83
JH
1137JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1138 from 255 to 1024 chars.
1139
6c9ed72e
JH
1140JH/24 Verification callouts now attempt to use TLS by default.
1141
cfab9d68 1142HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
99c1bb4e 1143 are generic router options now. The defaults didn't change.
50dc7409 1144
f846c8f5
JH
1145JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1146 Original patch from Alexander Shikoff, worked over by JH.
1147
fd4c285c
HSHR
1148HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1149 files if ZCAT_COMMAND is not executable.
1150
4c04137d 1151JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
fd7f7910 1152
d2a2c69b
JH
1153JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1154
8241d8dd
JH
1155JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1156 Normally benign, it bites when the pair was led to by a CNAME;
4c04137d 1157 modern usage is to not canonicalize the domain to a CNAME target
8241d8dd
JH
1158 (and we were inconsistent anyway for A-only vs AAAA+A).
1159
1f12df4d
JH
1160JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1161
1f155f8e
JH
1162JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1163 when evaluating $sender_host_dnssec.
1164
1705dd20
JH
1165JH/31 Check the HELO verification lookup for DNSSEC, adding new
1166 $sender_helo_dnssec variable.
1167
038597d2
PP
1168JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1169
474f71bf
JH
1170JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1171
7137ca4b
JH
1172JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1173
dcb1095c
JH
1174JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1175 documented as working, but never had. Support all but $spam_report.
1176
2f460950
JH
1177JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1178 added for tls authenticator.
1179
2f680c0c
HSHR
1180HS/03 Add perl_taintmode main config option
1181
9c695f6d 1182
e449c3b0
TL
1183Exim version 4.85
1184-----------------
4c57a40e 1185
e449c3b0
TL
1186TL/01 When running the test suite, the README says that variables such as
1187 no_msglog_check are global and can be placed anywhere in a specific
1188 test's script, however it was observed that placement needed to be near
1189 the beginning for it to behave that way. Changed the runtest perl
1190 script to read through the entire script once to detect and set these
1191 variables, reset to the beginning of the script, and then run through
1192 the script parsing/test process like normal.
1193
ac20058f
TL
1194TL/02 The BSD's have an arc4random API. One of the functions to induce
1195 adding randomness was arc4random_stir(), but it has been removed in
1196 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1197 function when detected.
1198
a9b8ec8b
JH
1199JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1200 cause callback expansion.
1201
6286d7c4
TL
1202TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1203 syntax errors in an expansion can be treated as a string instead of
1204 logging or causing an error, due to the internal use of bool_lax
1205 instead of bool when processing it.
1206
0f06b4f2 1207JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
d567a64d
JH
1208 server certificates when making smtp deliveries.
1209
be36e572
JH
1210JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1211
ac4ef9bd
JH
1212JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1213
0eb51736
TL
1214TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1215
c713ca4b
TL
1216TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1217 Merged patch from Sebastian Wiedenroth.
e449c3b0 1218
bd21a787
WB
1219JH/05 Fix results-pipe from transport process. Several recipients, combined
1220 with certificate use, exposed issues where response data items split
1221 over buffer boundaries were not parsed properly. This eventually
1222 resulted in duplicates being sent. This issue only became common enough
4c04137d 1223 to notice due to the introduction of connection certificate information,
bd21a787
WB
1224 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1225
8bc732e8
JH
1226JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1227 size buffer was used, resulting in syntax errors when an expansion
1228 exceeded it.
1229
a7fec7a7
JH
1230JH/07 Add support for directories of certificates when compiled with a GnuTLS
1231 version 3.3.6 or later.
1232
4c04137d 1233JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
774ef2d7
JH
1234 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1235 both become "event_action", the variables become $event_name, $event_data
aec45841 1236 and $event_defer_errno. There is a new variable $verify_mode, usable in
723fe533
JH
1237 routers, transports and related events. The tls:cert event is now also
1238 raised for inbound connections, if the main configuration event_action
1239 option is defined.
774ef2d7 1240
eca4debb
TL
1241TL/06 In test suite, disable OCSP for old versions of openssl which contained
1242 early OCSP support, but no stapling (appears to be less than 1.0.0).
1243
8d692470
JH
1244JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1245 server certificate names available under the smtp transport option
1246 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1247 matches.
1248
e9477a08
JH
1249JH/10 Time-related extraction expansions from certificates now use the main
1250 option "timezone" setting for output formatting, and are consistent
1251 between OpenSSL and GnuTLS compilations. Bug 1541.
1252
ad4c5ff9
JH
1253JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1254 encoded parameter in the incoming message. Bug 1558.
8dea5edf
JH
1255
1256JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1257 include certificate info, eximon was claiming there were spoolfile
1258 syntax errors.
1259
3394b36a 1260JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
8dea5edf
JH
1261
1262JH/14 Log delivery-related information more consistently, using the sequence
1263 "H=<name> [<ip>]" wherever possible.
1264
3394b36a
TL
1265TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1266 are problematic for Debian distribution, omit them from the release
1267 tarball.
1268
ad4c5ff9
JH
1269JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1270
4c04137d 1271JH/16 Fix string representation of time values on 64bit time_t architectures.
ad4c5ff9
JH
1272 Bug 1561.
1273
1274JH/17 Fix a null-indirection in certextract expansions when a nondefault
1275 output list separator was used.
1276
8bc732e8 1277
1f0ebb98
TL
1278Exim version 4.84
1279-----------------
09728d20
TL
1280TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1281 checkers that were complaining about end of non-void function with no
1282 return.
1f0ebb98 1283
a612424f 1284JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
4c04137d 1285 This was a regression introduced in 4.83 by another bugfix.
a612424f
JH
1286
1287JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1288
1289TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
a9b8ec8b 1290 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
a612424f 1291
1f0ebb98 1292
c0e56233
TF
1293Exim version 4.83
1294-----------------
1295
1296TF/01 Correctly close the server side of TLS when forking for delivery.
1297
1298 When a message was received over SMTP with TLS, Exim failed to clear up
1299 the incoming connection properly after forking off the child process to
1300 deliver the message. In some situations the subsequent outgoing
1301 delivery connection happened to have the same fd number as the incoming
1302 connection previously had. Exim would try to use TLS and fail, logging
1303 a "Bad file descriptor" error.
1304
7245734e
TF
1305TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1306 utilities have not been installed.
1307
fd5dad68
JH
1308JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1309 temporary space as the ACL may create new global variables.
1310
5428a946
TL
1311TL/01 LDAP support uses per connection or global context settings, depending
1312 upon the detected version of the libraries at build time.
1313
a3c86431
TL
1314TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1315 to extract and use the src ip:port in logging and expansions as if it
8ded8589
TL
1316 were a direct connection from the outside internet. PPv2 support was
1317 updated based on HAProxy spec change in May 2014.
a3c86431 1318
aa26e137
JH
1319JH/02 Add ${listextract {number}{list}{success}{fail}}.
1320
5a1b8443
WB
1321TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1322 Properly escape header and check for NULL return.
1323
72c9e342
PP
1324PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1325 not dns_use_dnssec.
1326
76f44207
WB
1327JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1328
770747fd
MFM
1329TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1330 characters in header names, implemented as a verify condition.
1331 Contributed by Michael Fischer v. Mollard.
1332
8ddef691 1333TL/05 Rename SPF condition results err_perm and err_temp to standardized
982650ec
TL
1334 results permerror and temperror. Previous values are deprecated but
1335 still accepted. In a future release, err_perm and err_temp will be
1336 completely removed, which will be a backward incompatibility if the
1337 ACL tests for either of these two old results. Patch contributed by
8ddef691 1338 user bes-internal on the mailing list.
c0e56233 1339
b9c2e32f
AR
1340JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1341
e45a1c37
JH
1342JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1343 selectors, in both main and reject logs.
1344
67d81c10
JH
1345JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1346 failed delivery.
1347
b1f8e4f8
JH
1348JH/07 Add malware type "sock" for talking to simple daemon.
1349
511a6c14 1350JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
511a6c14
JH
1351
1352JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1353 routers/transports under cutthrough routing.
214042d2 1354
51c7471d
JH
1355JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1356 numbers. Touch up "bool" conditional to keep the same definition.
1357
3695be34
TL
1358TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1359
1e06383a
TL
1360JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1361
76146973
JH
1362JH/12 Expand items in router/transport headers_add or headers_remove lists
1363 individually rather than the list as a whole. Bug 1452.
1364
1365 Required for reasonable handling of multiple headers_ options when
1366 they may be empty; requires that headers_remove items with embedded
1367 colons must have them doubled (or the list-separator changed).
1368
8c8b8274
TL
1369TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1370 view the policy declared in the DMARC record. Currently, $dmarc_status
1371 is a combined value of both the record presence and the result of the
1372 analysis.
b1f8e4f8 1373
35aba663
JH
1374JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1375
8c51eead 1376JH/14 New options dnssec_request_domains, dnssec_require_domains on the
578897ea
JH
1377 dnslookup router and the smtp transport (applying to the forward
1378 lookup).
8c51eead 1379
deae092e
HS
1380TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1381 of ldap servers used for a specific lookup. Patch provided by Heiko
1382 Schlichting.
35aba663 1383
fd3b6a4a 1384JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
4e0983dc 1385 New variable $lookup_dnssec_authenticated for observability.
fd3b6a4a 1386
8d91c6dc
LT
1387TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1388 Patch submitted by Lars Timman.
1389
2b4a568d
JH
1390JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1391
d2af03f4
HS
1392TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1393 Requires trusted mode and valid format message id, aborts otherwise.
1394 Patch contributed by Heiko Schlichting.
1395
9d1c15ef
JH
1396JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1397 certextract with support for various fields. Bug 1358.
1398
44662487
JH
1399JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1400 is requested by default, modifiable by smtp transport option
6a8a60e0
JH
1401 hosts_request_ocsp.
1402
ed3bba5f 1403JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
6a8a60e0 1404 operate on certificate variables to give certificate fingerprints
9ef9101c 1405 Also new ${sha256:cert_variable}.
44662487 1406
8ccd00b1
JH
1407JH/23 The PRDR feature is moved from being Experimental into the mainline.
1408
8ded8589
TL
1409TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1410 Christian Aistleitner.
1411
f2de3a33
JH
1412JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1413
6eb02f88
TL
1414TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1415 file. Patch from Wolfgang Breyha.
1416
00bff6f6
JH
1417JH/25 Expand the coverage of the delivery $host and $host_address to
1418 client authenticators run in verify callout. Bug 1476.
1419
071c51f7
JH
1420JH/26 Port service names are now accepted for tls_on_connect_ports, to
1421 align with daemon_smtp_ports. Bug 72.
1422
a6d4c44e
TF
1423TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1424 support and error reporting did not work properly.
1425
3ae173e7
ACK
1426TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1427 and is readable. Patch from Andrew Colin Kissa.
1428
c13d09b8
TL
1429TL/14 Enhance documentation of ${run expansion and how it parses the
1430 commandline after expansion, particularly in the case when an
1431 unquoted variable expansion results in an empty value.
1432
0df4ab80
JH
1433JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1434
66be95e0
PP
1435PP/02 Fix internal collision of T_APL on systems which support RFC3123
1436 by renaming away from it. Addresses GH issue 15, reported by
1437 Jasper Wallace.
1438
1bd0d12b
JH
1439JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1440
0de7239e
TL
1441TL/15 SECURITY: prevent double expansion in math comparison functions
1442 (can expand unsanitized data). Not remotely exploitable.
1443 CVE-2014-2972
1444
fd3b6a4a 1445
2c422e6f 1446Exim version 4.82
98a90c36
PP
1447-----------------
1448
1449PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1450
12f69989
PP
1451PP/02 Make -n do something, by making it not do something.
1452 When combined with -bP, the name of an option is not output.
1453
54c90be1
PP
1454PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1455 by GnuTLS.
1456
1f4a55da
PP
1457PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1458 $sender_host_name and config options to manage this, and basic check
1459 routines.
1460
13363eba 1461PP/05 DSCP support for outbound connections and control modifier for inbound.
36a3ae5f 1462
66645890 1463PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
e402235f
PP
1464 (Only plugin which currently uses this is kerberos4, which nobody should
1465 be using, but we should make it available and other future plugins might
1466 conceivably use it, even though it would break NAT; stuff *should* be
1467 using channel bindings instead).
66645890 1468
a3fb9793 1469PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
f4ee74ac
PP
1470 name; added for Sendmail compatibility; requires admin caller.
1471 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1472 just ignore it); requires trusted caller.
a3fb9793 1473 Also parse but ignore: -Ac -Am -X<logfile>
f4ee74ac 1474 Bugzilla 1117.
a3fb9793 1475
d27f98fe 1476TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
98a90c36 1477
6822b909
TL
1478TL/02 Add +smtp_confirmation as a default logging option.
1479
e7568d51
TL
1480TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1481 Patch by Magnus Holmgren from 2007-02-20.
1482
ae0e32ee 1483TL/04 Bugzilla 1281 - Spec typo.
ca0ff207 1484 Bugzilla 1283 - Spec typo.
97f42f10 1485 Bugzilla 1290 - Spec grammar fixes.
ca0ff207
TL
1486
1487TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
ae0e32ee 1488
e2658fff
TL
1489TL/06 Add Experimental DMARC support using libopendmarc libraries.
1490
83712b39
TL
1491TL/07 Fix an out of order global option causing a segfault. Reported to dev
1492 mailing list by by Dmitry Isaikin.
1493
976b7e9f
JH
1494JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1495
be4a1376
JH
1496JH/02 Support "G" suffix to numbers in ${if comparisons.
1497
ec4b68e5
PP
1498PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1499
d7148a07
NM
1500NM/01 Bugzilla 1197 - Spec typo
1501 Bugzilla 1196 - Spec examples corrections
ec4b68e5 1502
585121e2 1503JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
ec4b68e5 1504
2519e60d
TL
1505PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1506 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1507 function.
a5f239e4 1508
13d08c90
PP
1509PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1510 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1511
bef3ea7f
JH
1512JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1513 "acl {{name}{arg}...}", and optional args on acl condition
1514 "acl = name arg..."
a5f239e4 1515
846726c5
JH
1516JH/05 Permit multiple router/transport headers_add/remove lines.
1517
3a796370
JH
1518JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1519
ea722490 1520JH/07 Avoid using a waiting database for a single-message-only transport.
8b260705
PP
1521 Performance patch from Paul Fisher. Bugzilla 1262.
1522
b1b05573
JH
1523JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1524 Bugzilla 884.
1525
362145b5
JH
1526JH/09 Add $headers_added variable, with content from use of ACL modifier
1527 add_header (but not yet added to the message). Bugzilla 199.
1528
3c0a92dc
JH
1529JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1530 Pulled from Bugzilla 817 by Wolfgang Breyha.
1531
6d7c6175
PP
1532PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1533 CVE-2012-5671
e78e6ecf 1534 (nb: this is the same fix as in Exim 4.80.1)
6d7c6175 1535
6f123593
JH
1536JH/11 Add A= logging on delivery lines, and a client_set_id option on
1537 authenticators.
1538
c8e2fc1e
JH
1539JH/12 Add optional authenticated_sender logging to A= and a log_selector
1540 for control.
1541
005ac57f
PP
1542PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1543
3f1df0e3
PP
1544PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1545 advertise SMTP AUTH mechanism to us, instead of a generic
1546 protocol violation error. Also, make Exim more robust to bad
1547 data from the Dovecot auth socket.
1548
67bd1ab3
TF
1549TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1550
1551 When a queue runner is handling a message, Exim first routes the
1552 recipient addresses, during which it prunes them based on the retry
1553 hints database. After that it attempts to deliver the message to
1554 any remaining recipients. It then updates the hints database using
1555 the retry rules.
1556
1557 So if a recipient address works intermittently, it can get repeatedly
1558 deferred at routing time. The retry hints record remains fresh so the
1559 address never reaches the final cutoff time.
1560
1561 This is a fairly common occurrence when a user is bumping up against
1562 their storage quota. Exim had some logic in its local delivery code
1563 to deal with this. However it did not apply to per-recipient defers
1564 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1565
1ddeb334
TF
1566 This change adds a proper retry rule check during routing so that the
1567 final cutoff time is checked against the message's age. We only do
1568 this check if there is an address retry record and there is not a
1569 domain retry record; this implies that previous attempts to handle
1570 the address had the retry_use_local_parts option turned on. We use
1571 this as an approximation for the destination being like a local
1572 delivery, as in LMTP.
67bd1ab3
TF
1573
1574 I suspect this new check makes the old local delivery cutoff check
1575 redundant, but I have not verified this so I left the code in place.
1576
326cdc37
TF
1577TF/02 Correct gecos expansion when From: is a prefix of the username.
1578
1579 Test 0254 submits a message to Exim with the header
1580
1581 Resent-From: f
1582
1583 When I ran the test suite under the user fanf2, Exim expanded
1584 the header to contain my full name, whereas it should have added
1585 a Resent-Sender: header. It erroneously treats any prefix of the
1586 username as equal to the username.
1587
1588 This change corrects that bug.
1589
f62514b3
GF
1590GF/01 DCC debug and logging tidyup
1591 Error conditions log to paniclog rather than rejectlog.
1592 Debug lines prefixed by "DCC: " to remove any ambiguity.
1593
eb505532
TF
1594TF/03 Avoid unnecessary rebuilds of lookup-related code.
1595
14c7b357
PP
1596PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1597 Bug spotted by Jeremy Harris; was flawed since initial commit.
1598 Would have resulted in OCSP responses post-SNI triggering an Exim
1599 NULL dereference and crash.
1600
94eaf700
PP
1601JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1602
6f5a440a
PP
1603PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1604 Bug detection, analysis and fix by Samuel Thibault.
1605 Bugzilla 1331, Debian bug #698092.
1606
514ee161
SC
1607SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1608
fd98a5c6
JH
1609JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1610 Server implementation by Todd Lyons, client by JH.
1611 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1612 config variable "prdr_enable" controls whether the server
1613 advertises the facility. If the client requests PRDR a new
1614 acl_data_smtp_prdr ACL is called once for each recipient, after
1615 the body content is received and before the acl_smtp_data ACL.
4c04137d 1616 The client is controlled by both of: a hosts_try_prdr option
fd98a5c6
JH
1617 on the smtp transport, and the server advertisement.
1618 Default client logging of deliveries and rejections involving
1619 PRDR are flagged with the string "PRDR".
1620
035c7f1e
PP
1621PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1622 fclose(). Diagnosis by Todd Lyons.
1623
ff284120
PP
1624PP/17 Update configure.default to handle IPv6 localhost better.
1625 Patch by Alain Williams (plus minor tweaks).
1626 Bugzilla 880.
1627
26e72755
PP
1628PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1629 This is now consistent with GnuTLS, and is now documented: the
1630 previous undocumented portable approach to treating the option as
1631 unset was to force an expansion failure. That still works, and
1632 an empty string is now equivalent.
1633
0fbd9bff
PP
1634PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1635 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1636 not performing validation itself.
1637
700d22f3
PP
1638PP/20 Added force_command boolean option to pipe transport.
1639 Patch from Nick Koston, of cPanel Inc.
1640
fcc8e047
JH
1641JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1642 Bugzilla 321, 823.
1643
4c04137d 1644TF/04 Added udpsend ACL modifier and hexquote expansion operator
7142daca 1645
8c020188
PP
1646PP/21 Fix eximon continuous updating with timestamped log-files.
1647 Broken in a format-string cleanup in 4.80, missed when I repaired the
1648 other false fix of the same issue.
1649 Report and fix from Heiko Schlichting.
1650 Bugzilla 1363.
1651
d13cdd30
PP
1652PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1653 Report from Prashanth Katuri.
1654
e2fbf4a2
PP
1655PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1656 It's SecureTransport, so affects any MacOS clients which use the
1657 system-integrated TLS libraries, including email clients.
1658
f4c1088b
PP
1659PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1660 using a MIME ACL for non-SMTP local injection.
1661 Report and assistance in diagnosis by Warren Baker.
1662
c5c2182f
PP
1663TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1664
73431ca9
JH
1665JH/16 Fix comparisons for 64b. Bugzilla 1385.
1666
2d07a215
TL
1667TL/09 Add expansion variable $authenticated_fail_id to keep track of
1668 last id that failed so it may be referenced in subsequent ACL's.
1669
a30a8861
TL
1670TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1671 Alexander Miroch.
1672
33382dd9
TL
1673TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1674 ldap library initialization, allowing self-signed CA's to be
1675 used. Also properly sets require_cert option later in code by
1676 using NULL (global ldap config) instead of ldap handle (per
1677 session). Bug diagnosis and testing by alxgomz.
6d7c6175 1678
046172e6
TL
1679TL/12 Enhanced documentation in the ratelimit.pl script provided in
1680 the src/util/ subdirectory.
1681
581d7bee 1682TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1a7b746d 1683 renamed to Transport Post Delivery Action by Jeremy Harris, as
9bdd29ad
TL
1684 EXPERIMENTAL_TPDA.
1685
1686TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1687 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1688 redis_servers = needs to be configured which will be used by the redis
1689 lookup. Patch from Warren Baker, of The Packet Hub.
1690
237b2cf2
TL
1691TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1692
9fc5a352
TL
1693TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1694 hostname or reverse DNS when processing a host list. Used suggestions
1695 from multiple comments on this bug.
1a7b746d 1696
b10e4ec2
TL
1697TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1698
e2cebd74
TL
1699TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1700 Missed a few lines, added it to make the runtest require no keyboard
1701 interaction.
1702
1703TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1704 contains upper case chars. Make router use caseful_local_part.
1705
2519e60d
TL
1706TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1707 support when GnuTLS has been built with p11-kit.
1708
e78e6ecf 1709
4263f395
PP
1710Exim version 4.80.1
1711-------------------
1712
1713PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1714 CVE-2012-5671
2c422e6f 1715 This, or similar/improved, will also be change PP/11 of 4.82.
3c0a92dc 1716
ea722490 1717
b1770b6e 1718Exim version 4.80
0599f9cf
PP
1719-----------------
1720
1721PP/01 Handle short writes when writing local log-files.
1722 In practice, only affects FreeBSD (8 onwards).
1723 Bugzilla 1053, with thanks to Dmitry Isaikin.
1724
23c7e742
NM
1725NM/01 Bugzilla 949 - Documentation tweak
1726
b322aac8
NM
1727NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1728 improved.
1729
4a891427
NM
1730NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1731
c1e794ba 1732PP/02 Implemented gsasl authenticator.
b322aac8 1733
97753960
PP
1734PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1735
1736PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1737 `pkg-config foo` for cflags/libs.
1738
df6303fa
PP
1739PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1740 with rest of GSASL and with heimdal_gssapi.
1741
7e6a8985
PP
1742PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1743 `pkg-config foo` for cflags/libs for the TLS implementation.
1744
f1e05cc7 1745PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
20aa9dbd
PP
1746 properties get this fed in as external SSF. A number of robustness
1747 and debugging improvements to the cyrus_sasl authenticator.
b322aac8 1748
4c287009
PP
1749PP/08 cyrus_sasl server now expands the server_realm option.
1750
b98bb9ac
PP
1751PP/09 Bugzilla 1214 - Log authentication information in reject log.
1752 Patch by Jeremy Harris.
1753
4a6a987a
PP
1754PP/10 Added dbmjz lookup type.
1755
c45dd180 1756PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
c7955b11 1757
7db8d074
PP
1758PP/12 MAIL args handles TAB as well as SP, for better interop with
1759 non-compliant senders.
1760 Analysis and variant patch by Todd Lyons.
1761
eae0036b 1762NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
cfab9d68 1763 Bug report from Lars Müller <lars@samba.org> (via SUSE),
e0df1c83
DM
1764 Patch from Dirk Mueller <dmueller@suse.com>
1765
dec5017e
PP
1766PP/13 tls_peerdn now print-escaped for spool files.
1767 Observed some $tls_peerdn in wild which contained \n, which resulted
1768 in spool file corruption.
1769
c80c5570
PP
1770PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1771 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1772 or write after TLS renegotiation, which otherwise led to messages
1773 "Got SSL error 2".
1774
076b11e2
PP
1775TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1776 as a tracking header (ie: a signed header comes before the signature).
1777 Patch from Wolfgang Breyha.
1778
5407bfff
JH
1779JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1780 comma-sep list; embedded commas doubled.
1781
9e45c72b
PP
1782JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1783
e74376d8
PP
1784PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1785 diagnostics.
1786 Report and patch from Dmitry Banschikov.
1787
4c04137d 1788PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
da3ad30d
PP
1789 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1790 failures. We appear to now support TLS1.1+ with Exim.
1791
7be682ca
PP
1792PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1793 lets Exim select keys and certificates based upon TLS SNI from client.
3f0945ff
PP
1794 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1795 before an outbound SMTP session. New log_selector, +tls_sni.
7be682ca 1796
ef840681
PP
1797PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1798 NULL dereference. Report and patch from Alun Jones.
1799
5bfb4cdf
PP
1800PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1801 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1802 Not seeing resolver debug output on NetBSD, but suspect this is a
1803 resolver implementation change.
1804
c6e95d22
PP
1805PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1806 Left warnings. Added "eximon gdb" invocation mode.
1807
9cbad13b
PP
1808PP/21 Defaulting "accept_8bitmime" to true, not false.
1809
9ee44efb
PP
1810PP/22 Added -bw for inetd wait mode support.
1811
6a6084f8
PP
1812PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1813 locate the relevant includes and libraries. Made this the default.
1814
12dd53c7
PP
1815PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1816 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1817
9e45c72b 1818JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
97d17305
JH
1819 This may cause build issues on older platforms.
1820
17c76198
PP
1821PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1822 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1823 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1824 Added SNI support via GnuTLS too.
af3498d6 1825 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
17c76198 1826
53947857 1827PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
3f7eeb86 1828
eae0036b 1829PP/27 Applied dnsdb SPF support patch from Janne Snabb.
8ee4b30e
PP
1830 Applied second patch from Janne, implementing suggestion to default
1831 multiple-strings-in-record handling to match SPF spec.
eae0036b 1832
9e45c72b 1833JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
2605c55b 1834
7390e768
PP
1835PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1836 read-only, out of scope).
1837 Patch from Wolfgang Breyha, report from Stuart Northfield.
1838
08488c86
PP
1839PP/29 Fix three issues highlighted by clang analyser static analysis.
1840 Only crash-plausible issue would require the Cambridge-specific
1841 iplookup router and a misconfiguration.
1842 Report from Marcin Mirosław.
1843
6475bd82
PP
1844PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1845
81f91683
PP
1846PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1847 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1848 As part of this, removing so much warning spew let me fix some minor
1849 real issues in debug logging.
1850
5779e6aa
PP
1851PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1852 assignment on my part. Fixed.
1853
3375e053
PP
1854PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1855 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1856 Janne Snabb (who went above and beyond: thank you).
1857
1858PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1859 string otherwise requires a connection and a bunch more work and it's
78e0c7a3
PP
1860 relatively easy to get wrong. Should also expose TLS library linkage
1861 problems.
3375e053 1862
9d26b8c0
PP
1863PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1864 64-bit ${eval} (JH/03).
1865
57eb9e91 1866PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
b87a6e0e
PP
1867 GNU libc to support some of the 64-bit stuff, should not lead to
1868 conflicts. Defined before os.h is pulled in, so if a given platform
1869 needs to override this, it can.
1870
16880d1a
PP
1871PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1872 protection layer was required, which is not implemented.
1873 Bugzilla 1254, patch from Wolfgang Breyha.
1874
a799883d
PP
1875PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1876 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1877 tls_dhparam take prime identifiers. Also unbreak combination of
1878 OpenSSL+DH_params+TLSSNI.
1879
3ecab157 1880PP/39 Disable SSLv2 by default in OpenSSL support.
f0f5a555 1881
0599f9cf 1882
867fcbf5
PP
1883Exim version 4.77
1884-----------------
1885
1886PP/01 Solaris build fix for Oracle's LDAP libraries.
1887 Bugzilla 1109, patch from Stephen Usher.
1888
f1a29782
TF
1889TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1890
ab42bd23
TK
1891TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1892 whitespace trailer
867fcbf5 1893
0ca0cf52
TF
1894TF/02 Fix a couple more cases where we did not log the error message
1895 when unlink() failed. See also change 4.74-TF/03.
1896
921b12ca
TF
1897TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1898 lock up or crash if it happened to be inside a call to libc when it
1899 got a SIGUSR1 from exiwhat.
1900
1901 The SIGUSR1 handler appends the current process status to the process
1902 log which is later printed by exiwhat. It used to use the general
1903 purpose logging code to do this, but several functions it calls are
1904 not safe for signals.
1905
1906 The new output code in the SIGUSR1 handler is specific to the process
1907 log, and simple enough that it's easy to inspect for signal safety.
1908 Removing some special cases also simplifies the general logging code.
1909 Removing the spurious timestamps from the process log simplifies
1910 exiwhat.
1911
c99ce5c9
TF
1912TF/04 Improved ratelimit ACL condition.
1913
1914 The /noupdate option has been deprecated in favour of /readonly which
1915 has clearer semantics. The /leaky, /strict, and /readonly update modes
1916 are mutually exclusive. The update mode is no longer included in the
1917 database key; it just determines when the database is updated. (This
4c04137d 1918 means that when you upgrade Exim will forget old rate measurements.)
c99ce5c9
TF
1919
1920 Exim now checks that the per_* options are used with an update mode that
1921 makes sense for the current ACL. For example, when Exim is processing a
1922 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1923 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1924 must specify per_mail/readonly. If you omit the update mode it defaults to
1925 /leaky where that makes sense (as before) or /readonly where required.
1926
1927 The /noupdate option is now undocumented but still supported for
1928 backwards compatibility. It is equivalent to /readonly except that in
1929 ACLs where /readonly is required you may specify /leaky/noupdate or
1930 /strict/noupdate which are treated the same as /readonly.
1931
1932 A useful new feature is the /count= option. This is a generalization
1933 of the per_byte option, so that you can measure the throughput of other
1934 aggregate values. For example, the per_byte option is now equivalent
1935 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1936
1937 The per_rcpt option has been generalized using the /count= mechanism
1938 (though it's more complicated than the per_byte equivalence). When it is
1939 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1940 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1941 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1942 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1943 Note that using per_rcpt with a non-readonly update mode in more than
1944 one ACL will cause the recipients to be double-counted. (The per_mail
1945 and per_byte options don't have this problem.)
1946
1947 The handling of very low rates has changed slightly. If the computed rate
1948 is less than the event's count (usually one) then this event is the first
1949 after a long gap. In this case the rate is set to the same as this event's
1950 count, so that the first message of a spam run is counted properly.
1951
1952 The major new feature is a mechanism for counting the rate of unique
1953 events. The new per_addr option counts the number of different
1954 recipients that someone has sent messages to in the last time period. It
1955 behaves like per_rcpt if all the recipient addresses are different, but
1956 duplicate recipient addresses do not increase the measured rate. Like
1957 the /count= option this is a general mechanism, so the per_addr option
1958 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1959 example, measure the rate that a client uses different sender addresses
1960 with the options per_mail/unique=$sender_address. There are further
1961 details in the main documentation.
1962
3634fc25
TF
1963TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1964
792e8a19
TF
1965TF/06 Removed a few PCRE remnants.
1966
5901f0ab
TF
1967TF/07 Automatically extract Exim's version number from tags in the git
1968 repository when doing development or release builds.
1969
7f2a2a43
PP
1970PP/02 Raise smtp_cmd_buffer_size to 16kB.
1971 Bugzilla 879. Patch from Paul Fisher.
e2ca7082 1972
061b7ebd
PP
1973PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1974 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1975 Bugzilla 97.
1976
e12f8c32
PP
1977PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
1978
9e949f00 1979PP/05 Variable $av_failed, true if the AV scanner deferred.
7f2a2a43
PP
1980 Bugzilla 1078. Patch from John Horne.
1981
1982PP/06 Stop make process more reliably on build failure.
1983 Bugzilla 1087. Patch from Heiko Schlittermann.
9e949f00 1984
555ae6af 1985PP/07 Make maildir_use_size_file an _expandable_ boolean.
ac53fcda
PP
1986 Bugzilla 1089. Patch from Heiko Schlittermann.
1987
1988PP/08 Handle ${run} returning more data than OS pipe buffer size.
1989 Bugzilla 1131. Patch from Holger Weiß.
555ae6af 1990
6f7fe114
PP
1991PP/09 Handle IPv6 addresses with SPF.
1992 Bugzilla 860. Patch from Wolfgang Breyha.
1993
c566dd90
PP
1994PP/10 GnuTLS: support TLS 1.2 & 1.1.
1995 Bugzilla 1156.
89f897c3
PP
1996 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1997 Bugzilla 1095.
c566dd90 1998
d6cc7c78 1999PP/11 match_* no longer expand right-hand-side by default.
39257585
PP
2000 New compile-time build option, EXPAND_LISTMATCH_RHS.
2001 New expansion conditions, "inlist", "inlisti".
2002
0d0e4455
PP
2003PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
2004
3399bb60 2005PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
d690cbdc
PP
2006
2007PP/14 fix log_write() format string regression from TF/03.
2008 Bugzilla 1152. Patch from Dmitry Isaikin.
2009
0ca0cf52 2010
10906672
PP
2011Exim version 4.76
2012-----------------
2013
2014PP/01 The new ldap_require_cert option would segfault if used. Fixed.
2015
754a0503
PP
2016PP/02 Harmonised TLS library version reporting; only show if debugging.
2017 Layout now matches that introduced for other libraries in 4.74 PP/03.
2018
c0c7b2da
PP
2019PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
2020
e97d1f08
PP
2021PP/04 New "dns_use_edns0" global option.
2022
084c1d8c
PP
2023PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2024 Bugzilla 1098.
2025
4e7ee012
PP
2026PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2027 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
da80c2a8 2028
c8d52a00
PP
2029TK/01 Updated PolarSSL code to 0.14.2.
2030 Bugzilla 1097. Patch from Andreas Metzler.
2031
54e7ce4a
PP
2032PP/07 Catch divide-by-zero in ${eval:...}.
2033 Fixes bugzilla 1102.
2034
5ee6f336
PP
2035PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2036 Bugzilla 1104.
2037
c8d52a00 2038TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
6ea4a851
PP
2039 format-string attack -- SECURITY: remote arbitrary code execution.
2040
2041TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2042 time unintentionally subject to list matching rules, letting the header
2043 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2044 arbitrary string expansion). This allowed for information disclosure.
2045
2046PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2047 INT_MIN/-1 -- value coerced to INT_MAX.
c8d52a00 2048
10906672 2049
aa097c4c
NM
2050Exim version 4.75
2051-----------------
2052
4c04137d 2053NM/01 Workaround for PCRE version dependency in version reporting
aa097c4c
NM
2054 Bugzilla 1073
2055
7f3d9eff
TF
2056TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2057 This fixes portability to compilers other than gcc, notably
2058 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2059
159f52d2
TF
2060TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2061 makefiles for portability to HP-UX and POSIX correctness.
2062
0cc9542a
PP
2063PP/01 Permit LOOKUP_foo enabling on the make command-line.
2064 Also via indented variable definition in the Makefile.
2065 (Debugging by Oliver Heesakkers).
2066
f7274286
PP
2067PP/02 Restore caching of spamd results with expanded spamd_address.
2068 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2069
7b797365
PP
2070PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2071 Improves build reliability. Fix from: Frank Elsner
2072
caacae52
NM
2073NM/02 Fix wide character breakage in the rfc2047 coding
2074 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2075
09dcaba9
NM
2076NM/03 Allow underscore in dnslist lookups
2077 Fixes bug 1026. Patch from Graeme Fowler
2078
bc19a55b
PP
2079PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2080 Code patches from Adam Ciarcinski of NetBSD.
caacae52 2081
bd4c9759
NM
2082NM/04 Fixed exiqgrep to cope with mailq missing size issue
2083 Fixes bug 943.
2084
b72aab72
PP
2085PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2086 is logged, to avoid truncation. Patch from John Horne.
2087
2fe76745
PP
2088PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2089 Patch from Jakob Hirsch.
2090
76aa570c
PP
2091PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2092 SQL string expansion failure details.
2093 Patch from Andrey Oktyabrski.
2094
f1e5fef5
PP
2095PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2096 Patch from Simon Arlott.
2097
4d805ee9
PP
2098PP/09 New lookups functionality failed to compile on old gcc which rejects
2099 extern declarations in function scope.
2100 Patch from Oliver Fleischmann
2101
cd59ab18
PP
2102PP/10 Use sig_atomic_t for flags set from signal handlers.
2103 Check getgroups() return and improve debugging.
2104 Fixed developed for diagnosis in bug 927 (which turned out to be
2105 a kernel bug).
2106
332f5cf3
PP
2107PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2108 Patch from Mark Zealey.
2109
29cfeb94
PP
2110PP/12 Bugzilla 1056: Improved spamd server selection.
2111 Patch from Mark Zealey.
2112
660242ad
PP
2113PP/13 Bugzilla 1086: Deal with maildir quota file races.
2114 Based on patch from Heiko Schlittermann.
2115
bc4bc4c5
PP
2116PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2117 Patch from Uwe Doering, sign-off by Michael Haardt.
2118
2e64baa9
NM
2119NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2120 variable declaration deep within a block. Bug and patch from
2121 Dennis Davis.
2122
4c04137d 2123PP/15 lookups-Makefile IRIX compatibility coercion.
bddd7526 2124
6bac1a9a
PP
2125PP/16 Make DISABLE_DKIM build knob functional.
2126
552193f0
NM
2127NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2128 Patch by Simon Arlott
baeee2c1 2129
1b587e48
TF
2130TF/03 Fix valgrind.h portability to C89 compilers that do not support
2131 variable argument macros. Our copy now differs from upstream.
2132
aa097c4c 2133
8c07b69f
TF
2134Exim version 4.74
2135-----------------
2136
2137TF/01 Failure to get a lock on a hints database can have serious
2138 consequences so log it to the panic log.
2139
c0ea85ab
TF
2140TF/02 Log LMTP confirmation messages in the same way as SMTP,
2141 controlled using the smtp_confirmation log selector.
2142
0761d44e
TF
2143TF/03 Include the error message when we fail to unlink a spool file.
2144
0a349494
PP
2145DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2146 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2147 for maintaining out-of-tree patches for some time.
2148
2149PP/01 Bugzilla 139: Documentation and portability issues.
2150 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2151 Handle per-OS dynamic-module compilation flags.
2152
fea24b2e
PP
2153PP/02 Let /dev/null have normal permissions.
2154 The 4.73 fixes were a little too stringent and complained about the
2155 permissions on /dev/null. Exempt it from some checks.
2156 Reported by Andreas M. Kirchwitz.
2157
6545de78
PP
2158PP/03 Report version information for many libraries, including
2159 Exim version information for dynamically loaded libraries. Created
2160 version.h, now support a version extension string for distributors
2161 who patch heavily. Dynamic module ABI change.
2162
1670ef10
PP
2163PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2164 privilege escalation vulnerability whereby the Exim run-time user
2165 can cause root to append content of the attacker's choosing to
2166 arbitrary files.
2167
c0886197
PP
2168PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2169 (Wolfgang Breyha)
2170
b7487bce
PP
2171PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2172 If dropping privileges for untrusted macros, we disabled normal logging
2173 on the basis that it would fail; for the Exim run-time user, this is not
2174 the case, and it resulted in successful deliveries going unlogged.
2175 Fixed. Reported by Andreas Metzler.
2176
8c07b69f 2177
97fd1e48 2178Exim version 4.73
ed7f7860 2179-----------------
97fd1e48
PP
2180
2181PP/01 Date: & Message-Id: revert to normally being appended to a message,
2182 only prepend for the Resent-* case. Fixes regression introduced in
2183 Exim 4.70 by NM/22 for Bugzilla 607.
2184
6901c596
PP
2185PP/02 Include check_rfc2047_length in configure.default because we're seeing
2186 increasing numbers of administrators be bitten by this.
2187
a8c8d6b5
JJ
2188JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2189
77bb000f
PP
2190PP/03 Bugzilla 994: added openssl_options main configuration option.
2191
a29e5231
PP
2192PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2193
ec5a0394 2194PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
a29e5231 2195
55c75993
PP
2196PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2197
453a6645 2198PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
ec5a0394
PP
2199 without a peer certificate, leading to a segfault because of an
2200 assumption that peers always have certificates. Be a little more
453a6645
PP
2201 paranoid. Problem reported by Martin Tscholak.
2202
8544e77a
PP
2203PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2204 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2205 NB: ClamAV planning to remove STREAM in "middle of 2010".
3346ab01
PP
2206 CL also introduces -bmalware, various -d+acl logging additions and
2207 more caution in buffer sizes.
8544e77a 2208
83e029d5
PP
2209PP/09 Implemented reverse_ip expansion operator.
2210
ed7f7860
PP
2211PP/10 Bugzilla 937: provide a "debug" ACL control.
2212
7d9f747b
PP
2213PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2214
4b2241d2
PP
2215PP/12 Bugzilla 973: Implement --version.
2216
10385c15
PP
2217PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2218
dbc4b90d
PP
2219PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2220
532be449
PP
2221PP/15 Bugzilla 816: support multiple condition rules on Routers.
2222
6a8de854 2223PP/16 Add bool_lax{} expansion operator and use that for combining multiple
71265ae9
PP
2224 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2225 ignore trailing whitespace.
6a8de854 2226
5dc43717
JJ
2227JJ/02 prevent non-panic DKIM error from being sent to paniclog
2228
2229JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2230 "exim" to be used
55c75993 2231
3346ab01
PP
2232PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2233 Notification from Dr Andrew Aitchison.
2234
491fab4c
PP
2235PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2236 ExtendedDetectionInfo response format.
2237 Notification from John Horne.
2238
13eb9497
PP
2239PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2240 compatible.
2241
2242PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2243 XSL and documented dependency on system catalogs, with examples of how
2244 it normally works.
2245
7f36d675
DW
2246DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2247 access.
2248
c1d94452
DW
2249DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2250 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2251 configuration file which is writeable by the Exim user or group.
2252
e2f5dc15
DW
2253DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2254 of configuration files to cover files specified with the -C option if
2255 they are going to be used with root privileges, not just the default
2256 configuration file.
2257
cd25e41d
DW
2258DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2259 option (effectively making it always true).
2260
261dc43e
DW
2261DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2262 files to be used while preserving root privileges.
2263
fa32850b
DW
2264DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2265 that rogue child processes cannot use them.
2266
79d4bc3d
PP
2267PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2268 run-time user, instead of root.
2269
43236f35 2270PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2cfd3221
PP
2271 Exim run-time user without dropping privileges.
2272
fb08281f
DW
2273DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2274 result string, instead of calling string_vformat() twice with the same
2275 arguments.
3346ab01 2276
74935b98
DW
2277DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2278 for other users. Others should always drop root privileges if they use
2279 -C on the command line, even for a whitelisted configure file.
2280
90b6341f
DW
2281DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2282
57730b52
ML
2283NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2284
66581d1e 2285
465e92cf
JJ
2286Exim version 4.72
2287-----------------
2288
453a6645
PP
2289JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2290 $data_path, and $header_path variables; fixed documentation bugs and
2291 typos
465e92cf 2292
453a6645
PP
2293JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2294 exipick to access non-standard spools, including the "frozen" queue
2295 (Finput)
edae0343 2296
9bd3e22c
NM
2297NM/01 Bugzilla 965: Support mysql stored procedures.
2298 Patch from Alain Williams
2299
bb576ff7
NM
2300NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2301
5a1a5845
NM
2302NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2303 Patch from Andreas Metzler
2304
981a9fad
NM
2305NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2306 Patch from Kirill Miazine
2307
7fc497ee
NM
2308NM/05 Bugzilla 671: Added umask to procmail example.
2309
1a41defa
JJ
2310JJ/03 installed exipick 20100323.0, fixing doc bug
2311
a466095c 2312NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
b26eacf1 2313 directory. Notification and patch from Dan Rosenberg.
a466095c 2314
94a6bd0b
NM
2315TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2316
2317TK/02 Improve log output when DKIM signing operation fails.
2318
2319MH/01 Treat the transport option dkim_domain as a colon separated
2320 list, not as a single string, and sign the message with each element,
2321 omitting multiple occurences of the same signer.
2322
c1b141a8
NM
2323NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2324 Bugzilla 985, 986. Patch by Simon Arlott
94a6bd0b 2325
b26eacf1 2326NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
0d0c6357
NM
2327 Patch by Simon Arlott
2328
179c5980 2329PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
b26eacf1 2330 MBX locking. Notification from Dan Rosenberg.
179c5980 2331
9bd3e22c 2332
7c6d71af
NM
2333Exim version 4.71
2334-----------------
2335
7d9f747b 2336TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
7c6d71af 2337
f013fb92
NM
2338NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2339
0eb8eedd
NM
2340NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2341
663ee6d9
NM
2342NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2343
177ebd9b
NM
2344NM/04 Bugzilla 915: Flag broken perl installation during build.
2345
7c6d71af 2346
210f147e
NM
2347Exim version 4.70
2348-----------------
2349
cdd3bb85 2350TK/01 Added patch by Johannes Berg that expands the main option
e739e3d9 2351 "spamd_address" if it starts with a dollar sign.
cdd3bb85
TK
2352
2353TK/02 Write list of recipients to X-Envelope-Sender header when building
2354 the mbox-format spool file for content scanning (suggested by Jakob
7d9f747b 2355 Hirsch).
cdd3bb85
TK
2356
2357TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2358 (http://www.dcc-servers.net/) support via dccifd. Activated by
e739e3d9 2359 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
cdd3bb85
TK
2360
2361TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2362 by Mark Daniel Reidel <mr@df.eu>.
2363
210f147e
NM
2364NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2365 When building exim an external PCRE library is now needed -
2366 PCRE is a system library on the majority of modern systems.
2367 See entry on PCRE_LIBS in EDITME file.
2368
deafd5b3
NM
2369NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2370 conversation. Added nologin parameter to request.
7d9f747b 2371 Patch contributed by Kirill Miazine.
deafd5b3 2372
089793a4
TF
2373TF/01 Do not log submission mode rewrites if they do not change the address.
2374
5f16ca82
TF
2375TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2376
dae9d94e 2377NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
7d9f747b 2378 log files in place. Contributed by Roberto Lima.
dae9d94e 2379
7d9f747b 2380NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
3f0da4d0 2381
06864c44
TF
2382TF/03 Bugzilla 615: When checking the local_parts router precondition
2383 after a local_part_suffix or local_part_prefix option, Exim now
2384 does not use the address's named list lookup cache, since this
2385 contains cached lookups for the whole local part.
2386
65a7d8c3 2387NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
7d9f747b 2388 Robert Millan. Documentation is in experimental-spec.txt.
65a7d8c3 2389
23510047 2390TF/04 Bugzilla 668: Fix parallel build (make -j).
65a7d8c3 2391
7d9f747b 2392NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
5f28a6e8 2393
7d8eec3a 2394NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
7d9f747b 2395 Patch provided by Jan Srzednicki.
6c588e74 2396
89dec7b6
TF
2397TF/05 Leading white space used to be stripped from $spam_report which
2398 wrecked the formatting. Now it is preserved.
5f28a6e8 2399
a99de90c
TF
2400TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2401 that they are available at delivery time.
2402
e2803e40
TF
2403TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2404
7199e1ee
TF
2405TF/08 TLS error reporting now respects the incoming_interface and
2406 incoming_port log selectors.
2407
e276e04b
TF
2408TF/09 Produce a more useful error message if an SMTP transport's hosts
2409 setting expands to an empty string.
2410
ce552449 2411NM/06 Bugzilla 744: EXPN did not work under TLS.
7d9f747b 2412 Patch provided by Phil Pennock.
ce552449 2413
e765a0f1 2414NM/07 Bugzilla 769: Extraneous comma in usage fprintf
7d9f747b 2415 Patch provided by Richard Godbee.
e765a0f1 2416
4f054c63 2417NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
447de4b0 2418 acl_smtp_notquit, added index entry.
4f054c63 2419
7d9f747b
PP
2420NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2421 Patch provided by Eugene Bujak.
24c929a2 2422
7d9f747b
PP
2423NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2424 accept(). Patch provided by Maxim Dounin.
cf73943b 2425
b52bc06e 2426NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
7d9f747b 2427 Patch provided by Phil Pennock.
b52bc06e 2428
447de4b0
NM
2429NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2430
4c69d561 2431NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
7d9f747b 2432 Patch provided by Brad "anomie" Jorsch.
4c69d561 2433
d5c39246 2434NM/14 Bugzilla 622: Added timeout setting to transport filter.
7d9f747b 2435 Patch provided by Dean Brooks.
9b989985 2436
0b23848a
TK
2437TK/05 Add native DKIM support (does not depend on external libraries).
2438
8f3414a1 2439NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
7d9f747b 2440 Patch provided by Graeme Fowler.
e2aacdfd 2441
fb6f955d
NM
2442NM/16 Bugzilla 851: Documentation example syntax fix.
2443
2444NM/17 Changed NOTICE file to remove references to embedded PCRE.
8f3414a1 2445
7d9f747b
PP
2446NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2447 lsearch.
dbb0bf41 2448
7d9f747b
PP
2449NM/19 Bugzilla 745: TLS version reporting.
2450 Patch provided by Phil Pennock.
f3766eb5 2451
7d9f747b
PP
2452NM/20 Bugzilla 167: bool: condition support.
2453 Patch provided by Phil Pennock.
36f12725 2454
7d9f747b
PP
2455NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2456 clients. Patch provided by Phil Pennock.
e6060e2c 2457
7d9f747b
PP
2458NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2459 Patch provided by Brad "anomie" Jorsch.
5eb690a1 2460
7d9f747b
PP
2461NM/23 Bugzilla 687: Fix misparses in eximstats.
2462 Patch provided by Heiko Schlittermann.
d5c13d66 2463
7d9f747b
PP
2464NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2465 Patch provided by Heiko Schlittermann.
b2335c0b 2466
7d9f747b 2467NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1da77999 2468 plus update to original patch.
f4cd9433 2469
7d9f747b 2470NM/26 Bugzilla 799: Documentation correction for ratelimit.
dc988b7e 2471
7d9f747b
PP
2472NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2473 Patch provided by David Brownlee.
8dc71ab3 2474
7d9f747b 2475NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
400eda43 2476
7d9f747b 2477NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
ec5a421b 2478
7d9f747b 2479NM/30 Bugzilla 888: TLS documentation bugfixes.
07af267e 2480
7d9f747b 2481NM/31 Bugzilla 896: Dovecot buffer overrun fix.
51473862 2482
17792b53 2483NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
7d9f747b 2484 Unlike the original bugzilla I have changed all shell scripts in src tree.
17792b53 2485
7d9f747b
PP
2486NM/33 Bugzilla 898: Transport filter timeout fix.
2487 Patch by Todd Rinaldo.
52383f8f 2488
91576cec 2489NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
7d9f747b 2490 Patch by Serge Demonchaux.
5ca6d115 2491
7d9f747b
PP
2492NM/35 Bugzilla 39: Base64 decode bug fixes.
2493 Patch by Jakob Hirsch.
baee9eee 2494
7d9f747b 2495NM/36 Bugzilla 909: Correct connect() call in dcc code.
e93a964c 2496
7d9f747b 2497NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
9bf3d68f 2498
7d9f747b 2499NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
96535b98 2500
7d9f747b 2501NM/39 Bugzilla 911: Fixed MakeLinks build script.
30339e0f 2502
deafd5b3 2503
47db1125
NM
2504Exim version 4.69
2505-----------------
2506
4b3504d0
TK
2507TK/01 Add preliminary DKIM support. Currently requires a forked version of
2508 ALT-N's libdkim that I have put here:
2509 http://duncanthrax.net/exim-experimental/
2510
2511 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2512 were called 'true' and it seems that C99 defines that as a reserved
2513 keyword to be used with 'bool' variable types. That means you could
2514 not include C99-style headers which use bools without triggering
2515 build errors in sieve.c.
2516
81ea09ca
NM
2517NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2518 as mailq or other aliases. Changed the --help handling significantly
2519 to do whats expected. exim_usage() emits usage/help information.
2520
f13cddcb
SC
2521SC/01 Added the -bylocaldomain option to eximstats.
2522
7d9f747b 2523NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
8ad076b2 2524
7d9f747b 2525NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
a843aaa6 2526
7d9f747b 2527NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
47db1125
NM
2528
2529
eb4c0de6
PH
2530Exim version 4.68
2531-----------------
2532
2533PH/01 Another patch from the Sieve maintainer.
2534
6a3bceb1
PH
2535PH/02 When an IPv6 address is converted to a string for single-key lookup
2536 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2537 dots are used instead of colons so that keys in lsearch files need not
2538 contain colons. This was done some time before quoting was made available
2539 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2540 (notated using the quote facility) so as to distinguish them from IPv4
2541 keys. This meant that lookups for IP addresses in host lists did not work
2542 for iplsearch lookups.
2543
2544 This has been fixed by arranging for IPv6 addresses to be expressed with
2545 colons if the lookup type is iplsearch. This is not incompatible, because
2546 previously such lookups could never work.
2547
4c04137d 2548 The situation is now rather anomalous, since one *can* have colons in
6a3bceb1
PH
2549 ordinary lsearch keys. However, making the change in all cases is
2550 incompatible and would probably break a number of configurations.
2551
2e30fa9d
TK
2552TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2553 version.
2554
0806a9c5
MH
2555MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2556 conversion specification without a maximum field width, thereby enabling
2557 a rogue spamd server to cause a buffer overflow. While nobody in their
2558 right mind would setup Exim to query an untrusted spamd server, an
2559 attacker that gains access to a server running spamd could potentially
2560 exploit this vulnerability to run arbitrary code as the Exim user.
2561
ae276964
TK
2562TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2563 $primary_hostname instead of what libspf2 thinks the hosts name is.
2564
0f2cbd1b
MH
2565MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2566 a directory entry by the name of the lookup key. Previously, if a
2567 symlink pointed to a non-existing file or a file in a directory that
2568 Exim lacked permissions to read, a lookup for a key matching that
2569 symlink would fail. Now it is enough that a matching directory entry
2570 exists, symlink or not. (Bugzilla 503.)
2571
2b85bce7
PH
2572PH/03 The body_linecount and body_zerocount variables are now exported in the
2573 local_scan API.
2574
93655c46
PH
2575PH/04 Added the $dnslist_matched variable.
2576
6c512171
PH
2577PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2578 This means they are set thereafter only if the connection becomes
2579 encrypted.
2580
2581PH/06 Added the client_condition to authenticators so that some can be skipped
2582 by clients under certain conditions.
2583
aa6dc513
PH
2584PH/07 The error message for a badly-placed control=no_multiline_responses left
2585 "_responses" off the end of the name.
2586
a96603a0
PH
2587PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2588
8f240103
PH
2589PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2590 (without spaces) instead of just copying the configuration text.
2591
2592PH/10 Added the /noupdate option to the ratelimit ACL condition.
2593
d677b2f2
PH
2594PH/11 Added $max_received_linelength.
2595
d52120f2
PH
2596PH/12 Added +ignore_defer and +include_defer to host lists.
2597
64f2600a
PH
2598PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2599 way in which PCRE > 7.0 is built.
2600
8669f003
PH
2601PH/14 Implemented queue_only_load_latch.
2602
a4dc33a8
PH
2603PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2604 MAIL command. The effect was to mangle the value on 64-bit systems.
2605
d6a60c0f
PH
2606PH/16 Another patch from the Sieve maintainer.
2607
8f128379
PH
2608PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2609
8932dffe
PH
2610PH/18 If a system quota error occurred while trying to create the file for
2611 a maildir delivery, the message "Mailbox is full" was not appended to the
2612 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2613 only to a quota excession during the actual writing of the file.
d6a60c0f 2614
ddea74fa 2615PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
2616 characters?) which causes problems in log lines. The DN values are now
2617 passed through string_printing() before being added to log lines.
2618
ddea74fa 2619PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
2620 and InterBase are left for another time.)
2621
ddea74fa
PH
2622PH/21 Added message_body_newlines option.
2623
ce9f225c
PH
2624PH/22 Guard against possible overflow in moan_check_errorcopy().
2625
19897d52
PH
2626PH/23 POSIX allows open() to be a macro; guard against that.
2627
bc64a74d
PH
2628PH/24 If the recipient of an error message contained an @ in the local part
2629 (suitably quoted, of course), incorrect values were put in $domain and
2630 $local_part during the evaluation of errors_copy.
2631
eb4c0de6 2632
b4ed4da0
PH
2633Exim version 4.67
2634-----------------
2635
22ad45c9
MH
2636MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2637 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2638 Jan Srzednicki.
2639
b4ed4da0
PH
2640PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2641 issue a MAIL command.
2642
431b7361
PH
2643PH/02 In an ACL statement such as
2644
2645 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2646
2647 if a client was not listed at all, or was listed with a value other than
2648 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2649 the condition was not true (as it should be), so access was not denied.
2650 The bug was that the ! inversion was incorrectly passed on to the second
2651 item. This has been fixed.
2652
2653PH/03 Added additional dnslists conditions == and =& which are different from
2654 = and & when the dns lookup returns more than one IP address.
2655
83da1223
PH
2656PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2657 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2658
54fc8428
PH
2659PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2660 FSYNC, which compiles an option called disable_fsync that allows for
2661 bypassing fsync(). The documentation is heavily laced with warnings.
2662
34c5e8dd
SC
2663SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2664
bbe15da8
PH
2665PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2666 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2667 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2668 including adding "make clean"; (3) Added -fPIC when compiling the test
2669 dynamically loaded module, to get rid of a warning.
2670
0e8a9471
MH
2671MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2672 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2673 = 0s. The bug is otherwise harmless.
2674
f0872424
PH
2675PH/07 There was a bug in the dovecot authenticator such that the value of
2676 $auth1 could be overwritten, and so not correctly preserved, after a
2677 successful authentication. This usually meant that the value preserved by
2678 the server_setid option was incorrect.
2679
b01dd148
PH
2680PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2681
6bf342e1
PH
2682PH/09 Installed PCRE release 7.0.
2683
273f34d0
PH
2684PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2685 run for batched SMTP input. It is now run at the start of every message
2686 in the batch. While fixing this I discovered that the process information
2687 (output by running exiwhat) was not always getting set for -bs and -bS
2688 input. This is fixed, and it now also says "batched" for BSMTP.
2689
cf8b11a5
PH
2690PH/11 Added control=no_pipelining.
2691
41c7c167
PH
2692PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2693 patch, slightly modified), and move the expansion of helo_data till after
2694 the connection is made in the smtp transport (so it can use these
2695 values).
2696
9c57cbc0
PH
2697PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2698
f3f065bb
PH
2699PH/14 Added log_selector = +pid.
2700
047bdd8c
PH
2701PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2702
0ce9abe6
PH
2703PH/16 Add ${if forany and ${if forall.
2704
0e22dfd1
PH
2705PH/17 Added dsn_from option to vary the From: line in DSNs.
2706
4c590bd1
PH
2707PH/18 Flush SMTP output before performing a callout, unless control =
2708 no_callout_flush is set.
2709
09945f1e
PH
2710PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2711 was true (the default) a successful delivery failed to delete the retry
2712 item, thus causing premature timeout of the address. The bug is now
2713 fixed.
2714
c51b8e75
PH
2715PH/20 Added hosts_avoid_pipelining to the smtp transport.
2716
e28326d8 2717PH/21 Long custom messages for fakedefer and fakereject are now split up
4c04137d 2718 into multiline responses in the same way that messages for "deny" and
e28326d8
PH
2719 other ACL rejections are.
2720
75b1493f
PH
2721PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2722 with slight modification.
2723
7c5214ec
PH
2724PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2725 draft, changing the syntax and factoring some duplicate code".
2726
4311097e
PH
2727PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2728 for deliveries of the second and subsequent messages over the same SMTP
2729 connection.
2730
29f89cad
PH
2731PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2732 ${reduce, with only minor "tidies".
2733
5e687460
SC
2734SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2735
c3611384
PH
2736PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2737 expansion side effects.
2738
5a11a7b4
PH
2739PH/27 When a message times out after an over-quota error from an Exim-imposed
2740 quota, the bounce message says "mailbox is full". This message was not
2741 being given when it was a system quota that was exceeded. It now should
2742 be the same.
2743
0e20aff9
MH
2744MH/03 Made $recipients available in local_scan(). local_scan() already has
2745 better access to the recipient list through recipients_list[], but
2746 $recipients can be useful in postmaster-provided expansion strings.
2747
ca86f471
PH
2748PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2749 in the case of a MAIL command with additional options following the
2750 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2751 were accidentally chopped off.
2752
a14e5636
PH
2753PH/29 SMTP synchronization checks are implemented when a command is read -
2754 there is a check that no more input is waiting when there shouldn't be
2755 any. However, for some commands, a delay in an ACL can mean that it is
2756 some time before the response is written. In this time, more input might
2757 arrive, invalidly. So now there are extra checks after an ACL has run for
2758 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2759 pipelining has not been advertised.
2760
ec95d1a6
PH
2761PH/30 MH's patch to allow iscntrl() characters to be list separators.
2762
42855d71
PH
2763PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2764 returned in the SMTP response when smtp_return_error_details was false.
2765 This has been fixed.
2766
57c2c631
PH
2767PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2768 instead of the C I/O that was originally supplied, because problems were
2769 reported on Solaris.
2770
58c01c94
PH
2771PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2772 Exim which did not show up earlier: it was assuming that a call to
2773 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2774 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2775 was a macro that became an assignment, so it seemed to work. This has
2776 changed to a proper function call with a void return, hence the compile
2777 error. Exim's code has been fixed.
2778
dee5a20a
PH
2779PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2780 cpus.
2781
d2ee6114
PH
2782PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2783
b2d5182b
PH
2784PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2785
79749a79
PH
2786PH/37 If a message is not accepted after it has had an id assigned (e.g.
2787 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
2788 "Completed" line in the log. When some messages of this type were
2789 selected by exigrep, they were listed as "not completed". Others were
2790 picked up by some special patterns. I have improved the selection
2791 criteria to be more general.
79749a79 2792
c456d9bb
PH
2793PH/38 The host_find_failed option in the manualroute router can now be set
2794 to "ignore", to completely ignore a host whose IP address cannot be
2795 found. If all hosts are ignored, the behaviour is controlled by the new
2796 host_all_ignored option.
2797
cd9868ec
PH
2798PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2799 homing or because of multiple MX records with /mx) generated more than
2800 one IP address, and the following item turned out to be the local host,
2801 all the secondary addresses of the first item were incorrectly removed
2802 from the list, along with the local host and any following hosts (which
2803 is what is supposed to happen).
2804
ebeaf996
PH
2805PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2806 whoever called Exim into the -H file. In the case of the daemon it was
2807 behaving confusingly. When first started, it used values for whoever
2808 started the daemon, but after a SIGHUP it used the Exim user (because it
2809 calls itself on a restart). I have changed the code so that it now always
2810 uses the Exim user.
2811
2679d413
PH
2812PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2813 message are rejected with the same error (e.g. no authentication or bad
2814 sender address), and a DATA command is nevertheless sent (as can happen
2815 with PIPELINING or a stupid MUA), the error message that was given to the
2816 RCPT commands is included in the rejection of the DATA command. This is
2817 intended to be helpful for MUAs that show only the final error to their
2818 users.
2819
84024b72
PH
2820PH/42 Another patch from the Sieve maintainer.
2821
8005d38e
SC
2822SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2823 Eximstats - Fixed some broken HTML links and added missing column headers
2824 (Jez Hancock).
2825 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2826 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2827
3298c6c6
SC
2828SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2829
a43a27c5
PH
2830PH/43 Yet another patch from the Sieve maintainer.
2831
58eb016e 2832PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
2833 the response to the final '.' that terminates a message, but only in the
2834 case where the client has not sent further data following the '.'
2835 (unfortunately, this is allowed). However, in many cases there won't be
2836 any further data because there won't be any more messages to send. A call
2837 to select() can be used: if it shows that the input is "ready", there is
2838 either input waiting, or the socket has been closed. An attempt to read
2839 the next input character can distinguish the two cases. Previously, Exim
58eb016e 2840 would have sent an OK response which the client would never have see.
563b63fa
PH
2841 This could lead to message repetition. This fix should cure that, at
2842 least in a lot of common cases.
58eb016e 2843
b43a74ea
PH
2844PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2845 advertised in response to EHLO.
2846
b4ed4da0 2847
5dd1517f
PH
2848Exim version 4.66
2849-----------------
2850
2851PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2852 fixed by 4.65/MH/01 (is this a record?) are fixed:
2853
2854 (i) An empty string was always treated as zero by the numeric comparison
2855 operators. This behaviour has been restored.
2856
2857 (ii) It is documented that the numeric comparison operators always treat
2858 their arguments as decimal numbers. This was broken in that numbers
2859 starting with 0 were being interpreted as octal.
2860
2861 While fixing these problems I realized that there was another issue that
2862 hadn't been noticed. Values of message_size_limit (both the global option
2863 and the transport option) were treated as octal if they started with 0.
2864 The documentation was vague. These values are now always treated as
2865 decimal, and I will make that clear in the documentation.
2866
2867
93cfa765
TK
2868Exim version 4.65
2869-----------------
2870
2871TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2872 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2873 versions. (#438)
2874
d6066548
MH
2875MH/01 Don't check that the operands of numeric comparison operators are
2876 integers when their expansion is in "skipping" mode (fixes bug
2877 introduced by 4.64-PH/07).
2878
4362ff0d
PH
2879PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2880 child addresses, Exim now panics and dies. Previously, because the count
2881 is held in a short int, deliveries were likely to be lost. As such a
2882 large number of recipients for a single message is ridiculous
2883 (performance will be very, very poor), I have chosen to impose a limit
2884 rather than extend the field.
2885
93cfa765 2886
944e9e9c
TF
2887Exim version 4.64
2888-----------------
aa41d2de 2889
21d74bd9
TK
2890TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2891 leftover -K file (the existence of which was triggered by #402).
2892 While we were at it, introduced process PID as part of the -K
2893 filename. This should rule out race conditions when creating
2894 these files.
2895
2896TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2897 processing considerably. Previous code took too long for large mails,
2898 triggering a timeout which in turn triggers #401.
2899
2900TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2901 in the DK code in transports.c. sendfile() is not really portable,
2902 hence the _LINUX specificness.
944e9e9c
TF
2903
2904TF/01 In the add_headers option to the mail command in an Exim filter,
2905 there was a bug that Exim would claim a syntax error in any
2906 header after the first one which had an odd number of characters
2907 in the field name.
2908
2b1c6e3a
PH
2909PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2910 callout verification, Exim cached a "reject" for the entire domain. This
2911 is correct for most verifications, but it is not correct for a recipient
2912 verification with use_sender or use_postmaster set, because in that case
2913 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2914 case of MAIL FROM:<> rejection from other early rejections (e.g.
2915 rejection of HELO). When verifying a recipient using a non-null MAIL
2916 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2917 Whatever the result of the callout, the value of the domain cache is
2918 left unchanged (for any other kind of callout, getting as far as trying
2919 RCPT means that the domain itself is ok).
2920
1f872c80
PH
2921PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2922 gcc 4.1.1 threw up.
2923
2924PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2925 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2926 session, the daemon ignores ECONNECT errors and logs others; it now
2927 ignores EPIPE as well.
2928
d203e649
PH
2929PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2930 (quoted-printable decoding).
2931
cc2ed8f7 2932PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 2933 later the small subsequent patch to fix an introduced bug.
f951fd57 2934
ddfcd446
PH
2935PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2936
d45b1de8
PH
2937PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2938
2939PH/08 An error is now given if message_size_limit is specified negative.
2940
38a0a95f 2941PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 2942 to be given (somewhat) arbitrary names.
38a0a95f 2943
a2405d83
JJ
2944JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2945 in 4.64-PH/09.
2946
2947JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2948 miscellaneous code fixes
2949
6ea85e9a
PH
2950PH/10 Added the log_reject_target ACL modifier to specify where to log
2951 rejections.
2952
26da7e20
PH
2953PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2954 hostname. This is wrong, because it relates to the incoming message (and
2955 probably the interface on which it is arriving) and not to the outgoing
2956 callout (which could be using a different interface). This has been
2957 changed to use the value of the helo_data option from the smtp transport
2958 instead - this is what is used when a message is actually being sent. If
2959 there is no remote transport (possible with a router that sets up host
2960 addresses), $smtp_active_hostname is used.
6ea85e9a 2961
14aa5a05 2962PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 2963 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
2964 (a) The code assumed that strncpy() returns a negative number on buffer
2965 overflow, which isn't the case. Replaced with Exim's string_format()
2966 function.
2967 (b) There were several signed/unsigned issues. I just did the minimum
2968 hacking in of casts. There is scope for a larger refactoring.
2969 (c) The code used strcasecmp() which is not a standard C function.
2970 Replaced with Exim's strcmpic() function.
2971 (d) The code set only $1; it now sets $auth1 as well.
2972 (e) A simple test gave the error "authentication client didn't specify
2973 service in request". It would seem that Dovecot has changed its
2974 interface. Fortunately there's a specification; I followed it and
2975 changed what the client sends and it appears to be working now.
2976
ff75a1f7
PH
2977PH/13 Added $message_headers_raw to provide the headers without RFC 2047
2978 decoding.
2979
e6f6568e
PH
2980PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
2981 address A is aliased to B and C, where B exists and C does not. Without
2982 -v the output is "A verified" because verification stops after a
2983 successful redirection if more than one address is generated. However,
2984 with -v the child addresses are also verified. Exim was outputting "A
2985 failed to verify" and then showing the successful verification for C,
2986 with its parentage. It now outputs "B failed to verify", showing B's
2987 parentage before showing the successful verification of C.
2988
d6f6e0dc
PH
2989PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
2990 look up a TXT record in a specific list after matching in a combined
2991 list.
2992
322050c2
PH
2993PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2994 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2995 they consult the DNS. I had assumed they would set it the way they
2996 wanted; and indeed my experiments on Linux seem to show that in some
2997 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2998 To be on the safe side, however, I have now made the interface to
2999 host_find_byname() similar to host_find_bydns(), with an argument
3000 containing the DNS resolver options. The host_find_byname() function now
3001 sets these options at its start, just as host_find_bydns() does. The smtp
3002 transport options dns_qualify_single and dns_search_parents are passed to
3003 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
3004 of host_find_byname() use the default settings of RES_DEFNAMES
3005 (qualify_single) but not RES_DNSRCH (search_parents).
3006
08955dd3
PH
3007PH/17 Applied (a modified version of) Nico Erfurth's patch to make
3008 spool_read_header() do less string testing, by means of a preliminary
3009 switch on the second character of optional "-foo" lines. (This is
3010 overdue, caused by the large number of possibilities that now exist.
3011 Originally there were few.) While I was there, I also converted the
3012 str(n)cmp tests so they don't re-test the leading "-" and the first
3013 character, in the hope this might squeeze out yet more improvement.
3014
1eccaa59
PH
3015PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
3016 flag allowing group syntax was set by the header_syntax check but not
3017 turned off, possible causing trouble later; (2) The flag was not being
3018 set at all for the header_verify test, causing "group"-style headers to
3019 be rejected. I have now set it in this case, and also caused header_
3020 verify to ignore an empty address taken from a group. While doing this, I
3021 came across some other cases where the code for allowing group syntax
3022 while scanning a header line wasn't quite right (mostly, not resetting
3023 the flag correctly in the right place). These bugs could have caused
3024 trouble for malformed header lines. I hope it is now all correct.
3025
602e59e5
PH
3026PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
3027 with the "reply" argument non-NULL. The code, however (which originally
3028 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
3029 but it didn't always do it. This confused somebody who was copying the
3030 code for some other use. I have removed all the tests.
3031
411ef850
PH
3032PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
3033 feature that was used to support insecure browsers during the U.S. crypto
3034 embargo. It requires special client support, and Exim is probably the
3035 only MTA that supported it -- and would never use it because real RSA is
3036 always available. This code has been removed, because it had the bad
3037 effect of slowing Exim down by computing (never used) parameters for the
3038 RSA_EXPORT functionality.
3039
7befa435
PH
3040PH/21 On the advice of Timo Sirainen, added a check to the dovecot
3041 authenticator to fail if there's a tab character in the incoming data
3042 (there should never be unless someone is messing about, as it's supposed
3043 to be base64-encoded). Also added, on Timo's advice, the "secured" option
3044 if the connection is using TLS or if the remote IP is the same as the
3045 local IP, and the "valid-client-cert option" if a client certificate has
3046 been verified.
3047
48da4259 3048PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
3049 authenticators. This can be used for authorization after authentication
3050 succeeds. (In the case of plaintext, it servers for both authentication
3051 and authorization.)
3052
48da4259
PH
3053PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
3054 if any retry times were supplied.
3055
d1d5595c
PH
3056PH/24 Exim crashed if verify=helo was activated during an incoming -bs
3057 connection, where there is no client IP address to check. In this
3058 situation, the verify now always succeeds.
3059
0ef732d9
PH
3060PH/25 Applied John Jetmore's -Mset patch.
3061
328895cc
PH
3062PH/26 Added -bem to be like -Mset, but loading a message from a file.
3063
fd700877
PH
3064PH/27 In a string expansion for a processed (not raw) header when multiple
3065 headers of the same name were present, leading whitespace was being
3066 removed from all of them, but trailing whitespace was being removed only
3067 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
3068 before concatenation. Completely empty headers in a concatenation (as
3069 before) are ignored.
fd700877 3070
8dce1a6f
PH
3071PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
3072 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
3073
17af4a17
PH
3074PH/29 [Removed. This was a change that I later backed out, and forgot to
3075 correct the ChangeLog entry (that I had efficiently created) before
3076 committing the later change.]
f6c332bd
PH
3077
3078PH/30 Exim was sometimes attempting to deliver messages that had suffered
3079 address errors (4xx response to RCPT) over the same connection as other
3080 messages routed to the same hosts. Such deliveries are always "forced",
3081 so retry times are not inspected. This resulted in far too many retries
3082 for the affected addresses. The effect occurred only when there were more
3083 hosts than the hosts_max_try setting in the smtp transport when it had
3084 the 4xx errors. Those hosts that it had tried were not added to the list
3085 of hosts for which the message was waiting, so if all were tried, there
3086 was no problem. Two fixes have been applied:
3087
3088 (i) If there are any address or message errors in an SMTP delivery, none
3089 of the hosts (tried or untried) are now added to the list of hosts
3090 for which the message is waiting, so the message should not be a
3091 candidate for sending over the same connection that was used for a
3092 successful delivery of some other message. This seems entirely
3093 reasonable: after all the message is NOT "waiting for some host".
3094 This is so "obvious" that I'm not sure why it wasn't done
3095 previously. Hope I haven't missed anything, but it can't do any
3096 harm, as the worst effect is to miss an optimization.
3097
3098 (ii) If, despite (i), such a delivery is accidentally attempted, the
3099 routing retry time is respected, so at least it doesn't keep
3100 hammering the server.
3101
c1114884
PH
3102PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
3103 in ${readsocket because some servers need this prod.
3104
7a0743eb
PH
3105PH/32 Added some extra debug output when updating a wait-xxx database.
3106
0d85fa3f
PH
3107PH/33 The hint "could be header name not terminated by colon", which has been
3108 given for certain expansion errors for a long time, was not being given
3109 for the ${if def:h_colon_omitted{... case.
3110
1bf43b78
PH
3111PH/34 The spec says: "With one important exception, whenever a domain list is
3112 being scanned, $domain contains the subject domain." There was at least
3113 one case where this was not true.
3114
520de300
PH
3115PH/35 The error "getsockname() failed: connection reset by peer" was being
3116 written to the panic log as well as the main log, but it isn't really
3117 panic-worthy as it just means the connection died rather early on. I have
3118 removed the panic log writing for the ECONNRESET error when getsockname()
3119 fails.
3120
48c7f9e2
PH
3121PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
3122 runs only) independently of the message's sender address. This meant
3123 that, if the 4xx error was in fact related to the sender, a different
3124 message to the same recipient with a different sender could confuse
4c04137d 3125 things. In particular, this can happen when sending to a greylisting
48c7f9e2
PH
3126 server, but other circumstances could also provoke similar problems.
3127 I have changed the default so that the retry time for these errors is now
3128 based a combination of the sender and recipient addresses. This change
3129 can be overridden by setting address_retry_include_sender=false in the
3130 smtp transport.
3131
99ea1c86
PH
3132PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
3133 remote server are returned as part of bounce messages. This was not
3134 happening for LMTP over a pipe (the lmtp transport), but now it is the
3135 same for both kinds of LMTP.
3136
a2042e78
PH
3137PH/38 Despite being documented as not happening, Exim was rewriting addresses
3138 in header lines that were in fact CNAMEs. This is no longer the case.
3139
4fbcfc2e
PH
3140PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
3141 and queue runs started by the daemon processed all messages. This has
3142 been fixed so that -R and -S can now usefully be given with -q<time>.
3143
aa41d2de
PH
3144PH/40 Import PCRE release 6.7 (fixes some bugs).
3145
af561417
PH
3146PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
3147
3cc66b45
PH
3148PH/42 Give an error if -q is specified more than once.
3149
194cc0e4
PH
3150PH/43 Renamed the variables $interface_address and $interface_port as
3151 $received_ip_address and $received_port, to make it clear that these
3152 values apply to message reception, and not to the outgoing interface when
3153 a message is delivered. (The old names remain recognized, of course.)
3154
a401ddaa
PH
3155PH/44 There was no timeout on the connect() call when using a Unix domain
3156 socket in the ${readsocket expansion. There now is.
3157
4e88a19f
PH
3158PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
3159 be meaningful with "accept".
3160
d7d7b289
SC
3161SC/01 Eximstats V1.43
3162 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
3163
3164SC/02 Eximstats V1.44
3165 Use a glob alias rather than an array ref in the generated
3166 parser. This improves both readability and performance.
3167
3168SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
3169 Collect SpamAssassin and rejection statistics.
3170 Don't display local sender or destination tables unless
3171 there is data to show.
3172 Added average volumes into the top table text output.
3173
3174SC/04 Eximstats V1.46
3175 Collect data on the number of addresses (recipients)
3176 as well as the number of messages.
3177
3178SC/05 Eximstats V1.47
3179 Added 'Message too big' to the list of mail rejection
3180 reasons (thanks to Marco Gaiarin).
3181
3182SC/06 Eximstats V1.48
3183 Mainlog lines which have GMT offsets and are too short to
3184 have a flag are now skipped.
3185
3186SC/07 Eximstats V1.49 (Alain Williams)
3187 Added the -emptyok flag.
3188
3189SC/08 Eximstats V1.50
3190 Fixes for obtaining the IP address from reject messages.
3191
0ea2a468
JJ
3192JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
3193 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
4c04137d 3194 whitespace changes from 4.64-PH/27
0ea2a468
JJ
3195
3196JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
3197 match 4.64-PH/13
3198
3199JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
3200 are found, allow negative numbers in numeric criteria)
3201
3202JJ/06 exipick.20061117.2, added new $message_body_missing variable
3203
3204JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
3205 to match changes made in 4.64-PH/43
3206
8a10f5a4
PH
3207PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
3208
30e18802
PH
3209PH/47 Put in an explicit test for a DNS lookup of an address record where the
3210 "domain" is actually an IP address, and force a failure. This locks out
3211 those revolvers/nameservers that support "A-for-A" lookups, in
3212 contravention of the specifications.
3213
55728a4f
PH
3214PH/48 When a host name was looked up from an IP address, and the subsequent
3215 forward lookup of the name timed out, the host name was left in
3216 $sender_host_name, contrary to the specification.
d7d7b289 3217
d7837193
PH
3218PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
3219 restricted to single-key lookups, Exim was not diagnosing an error if
3220 * or *@ was used with a query-style lookup.
3221
87054a31
PH
3222PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
3223
ea2c01d2
MH
3224MH/01 local_scan ABI version incremented to 1.1. It should have been updated
3225 long ago, but noone interested enough thought of it. Let's just say that
3226 the "1.1" means that there are some new functions that weren't there at
3227 some point in the past.
3228
e4fa6968
PH
3229PH/51 Error processing for expansion failure of helo_data from an smtp
3230 transport during callout processing was broken.
3231
56f5d9bd
PH
3232PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
3233 tested/used via the -bh/-bhc/-bs options.
3234
922e1c28
PH
3235PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
3236 bug, fixed in subsequent PCRE releases).
3237
21eb6e72
PH
3238PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
3239 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
3240
a0540757
PH
3241PH/55 Check for a ridiculously long file name in exim_dbmbuild.
3242
944e9e9c 3243
478be7b0
SC
3244Exim version 4.63
3245-----------------
3246
3247SC/01 Use a glob alias rather than an array ref in eximstats generated
3248 parser. This improves both readability and performance.
3249
3250SC/02 Collect SpamAssassin and rejection statistics in eximstats.
3251 Don't display local sender or destination tables in eximstats unless
3252 there is data to show.
3253 Added average volumes into the eximstats top table text output.
3254