Fix the variables set by gsasl authenticator
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
446415f5
HSHR
1This document describes *changes* to previous versions, that might
2affect Exim's operation, with an unchanged configuration file. For new
3options, and new features, see the NewStuff file next to this ChangeLog.
495ae4b0 4
4c57a40e 5
00b35aee
FG
6Exim version 4.93+fixes
7-----------------------
8This is not an official release. It is just a branch, collecting
9proposed bugfixes. Depending on your environment the fixes may be
10necessary to build and/or run Exim successfully.
11
5cb18fca
JH
12JH/05 Regard command-line receipients as tainted.
13
00b35aee
FG
14JH/07 Bug 2489: Fix crash in the "pam" expansion condition. It seems that the
15 PAM library frees one of the arguments given to it, despite the
16 documentation. Therefore a plain malloc must be used.
17
5169b5fa
JH
18JH/08 Bug 2491: Use tainted buffers for the transport smtp context. Previously
19 on-stack buffers were used, resulting in a taint trap when DSN information
20 copied from a received message was written into the buffer.
21
92a158a6
JH
22JH/09 Bug 2493: Harden ARC verify against Outlook, whick has been seen to mix
23 the ordering of its ARC headers. This caused a crash.
24
2529a7a6
JH
25JH/10 Bug 2492: Use tainted memory for retry record when needed. Previously when
26 a new record was being constructed with information from the peer, a trap
27 was taken.
28
134c037e
JH
29JH/11 Bug 2494: Unset the default for dmarc_tld_file. Previously a naiive
30 installation would get error messages from DMARC verify, when it hit the
31 nonexistent file indicated by the default. Distros wanting DMARC enabled
32 should both provide the file and set the option.
33 Also enforce no DMARC verification for command-line sourced messages.
34
a0f5040c
JH
35JH/12 Fix an uninitialised flag in early-pipelining. Previously connections
36 could, depending on the platform, hang at the STARTTLS response.
37
0445bf50
JH
38JH/13 Bug 2498: Reset a counter used for ARC verify before handling another
39 message on a connection. Previously if one message had ARC headers and
40 the following one did not, a crash could result when adding an
41 Authentication-Results: header.
42
f7be88fd
JH
43JH/14 Bug 2500: Rewind some of the common-coding in string handling between the
44 Exim main code and Exim-related utities. The introduction of taint
45 tracking also did many adjustments to string handling. Since then, eximon
46 frequently terminated with an assert failure.
47
db78a5c4
JH
48JH/16 Fix the variables set by the gsasl authenticator. Previously a pointer to
49 library live data was being used, so the results became garbage. Make
50 copies while it is still usable.
51
00b35aee 52
40ed89b3
JH
53Exim version 4.93
54-----------------
55
8a40db1c
JH
56JH/01 OpenSSL: With debug enabled output keying information sufficient, server
57 side, to decode a TLS 1.3 packet capture.
40ed89b3 58
fc243e94 59JH/02 OpenSSL: Suppress the sending of (stateful) TLS1.3 session tickets.
d7f31bb6
JH
60 Previously the default library behaviour applied, sending two, each in
61 its own TCP segment.
62
897024f1
JH
63JH/03 Debug output for ACL now gives the config file name and line number for
64 each verb.
65
f1be21cf
JH
66JH/04 The default received_header_text now uses the RFC 8314 tls cipher clause.
67
fe12ec88
JH
68JH/05 DKIM: ensure that dkim_domain elements are lowercased before use.
69
05bf16f6
JH
70JH/06 Fix buggy handling of autoreply bounce_return_size_limit, and a possible
71 buffer overrun for (non-chunking) other transports.
72
fc243e94
JH
73JH/07 GnuTLS: Our use of late (post-handshake) certificate verification, under
74 TLS1.3, means that a server rejecting a client certificate is not visible
75 to the client until the first read of encrypted data (typically the
76 response to EHLO). Add detection for that case and treat it as a failed
77 TLS connection attempt, so that the normal retry-in-clear can work (if
78 suitably configured).
79
c05bdbd6 80JB/01 Bug 2375: fix expansions of 822 addresses having comments in local-part
e2ff8e24
JB
81 and/or domain. Found and fixed by Jason Betts.
82
14bc9cf0
JH
83JH/08 Add hardening against SRV & TLSA lookups the hit CNAMEs (a nonvalid
84 configuration). If a CNAME target was not a wellformed name pattern, a
85 crash could result.
86
254f38d1
JH
87JH/09 Logging: Fix initial listening-on line for multiple ports for an IP when
88 the OS reports them interleaved with other addresses.
89
c09dbcfb
JH
90JH/10 OpenSSL: Fix aggregation of messages. Previously, when PIPELINING was
91 used both for input and for a verify callout, both encrypted, SMTP
92 responses being sent by the server could be lost. This resulted in
93 dropped connections and sometimes bounces generated by a peer sending
94 to this system.
254f38d1 95
f9fc9427
JH
96JH/11 Harden plaintext authenticator against a badly misconfigured client-send
97 string. Previously it was possible to cause undefined behaviour in a
98 library routine (usually a crash). Found by "zerons".
99
e6024a5e
JH
100JH/12 Bug 2384: fix "-bP smtp_receive_timeout". Previously it returned no
101 output.
102
1fbf41cd
JH
103JH/13 Bug 2386: Fix builds with Dane under LibreSSL 2.9.0 onward. Some old
104 API was removed, so update to use the newer ones.
105
3c55eef2 106JH/14 Bug 1891: Close the log file if receiving a non-smtp message, without
00c0dd4e 107 any timeout set, is taking a long time. Previously we would hang on to a
3c55eef2
JH
108 rotated logfile "forever" if the input was arriving with long gaps
109 (a previous attempt to fix addressed lack, for a long time, of initial
110 input).
111
cb80814d
HSHR
112HS/01 Bug 2390: Use message_id for tempfile creation to avoid races in a
113 shared (NFS) environment. The length of the tempfile name is now
114 4 + 16 ("hdr.$message_exim_id") which might break on file
115 systems which restrict the file name length to lower values.
116 (It was "hdr.$pid".)
117
7d8d08c4 118HS/02 Bug 2390: Use message_id for tempfile creation to avoid races in a
82a996b1
HSHR
119 shared (NFS) environment.
120
7d8d08c4 121HS/03 Bug 2392: exigrep does case sensitive *option* processing (as it
82a996b1
HSHR
122 did for all versions <4.90). Notably -M, -m, --invert, -I may be
123 affected.
124
bd83c6f9
JH
125JH/15 Use unsigned when creating bitmasks in macros, to avoid build errors
126 on some platforms for bit 31.
127
d9acfc1c
JH
128JH/16 GnuTLS: rework ciphersuite strings under recent library versions. Thanks
129 to changes apparently associated with TLS1.3 handling some of the APIs
130 previously used were either nonfunctional or inappropriate. Strings
131 like TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM__AEAD:256
132 and TLS1.2:ECDHE_SECP256R1__RSA_SHA256__AES_128_CBC__SHA256:128 replace
133 the previous TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256 .
134 This affects log line X= elements, the $tls_{in,out}_cipher variables,
135 and the use of specific cipher names in the encrypted= ACL condition.
136
b10c87b3
JH
137JH/17 OpenSSL: the default openssl_options now disables ssl_v3.
138
7a501c87
JH
139JH/18 GnuTLS: fix $tls_out_ocsp under hosts_request_ocsp. Previously the
140 verification result was not updated unless hosts_require_ocsp applied.
141
e5903596
JH
142JH/19 Bug 2398: fix listing of a named-queue. Previously, even with the option
143 queue_list_requires_admin set to false, non-admin users were denied the
144 facility.
145
12d95aa6
JH
146JH/20 Bug 2389: fix server advertising of usable certificates, under GnuTLS in
147 directory-of-certs mode. Previously they were advertised despite the
148 documentation.
149
96eb7d2a
JH
150JH/21 The smtp transport option "hosts_noproxy_tls" is now unset by default.
151 A single TCP connection by a client will now hold a TLS connection open
152 for multiple message deliveries, by default. Previoud the default was to
153 not do so.
154
59c0959a 155JH/22 The smtp transport option "hosts_try_dane" now enables all hosts by
01603eec
JH
156 default. If built with the facility, DANE will be used. The facility
157 SUPPORT_DANE is now enabled in the prototype build Makefile "EDITME".
158
159JH/23 The build default is now for TLS to be included; the SUPPORT_TLS define
de517fd3
JH
160 is replaced with DISABLE_TLS. Either USE_GNUTLS or (the new) USE_OPENSSL
161 must be defined and you must still, unless you define DISABLE_TLS, manage
162 the the include-dir and library-file requirements that go with that
163 choice. Non-TLS builds are still supported.
59c0959a 164
48519cef
JH
165JH/24 Fix duplicated logging of peer name/address, on a transport connection-
166 reject under TFO.
96eb7d2a 167
efad2f41 168JH/25 The smtp transport option "hosts_try_fastopen" now enables all hosts by
4e48d56c 169 default. If the platform supports and has the facility enabled, it will
efad2f41
JH
170 be requested on all coneections.
171
4e48d56c
JH
172JH/26 The PIPE_CONNECT facility is promoted from experimental status and is now
173 controlled by the build-time option SUPPORT_PIPE_CONNECT.
174
6ee11061 175PP/01 Unbreak heimdal_gssapi, broken in 4.92.
0a5441fc 176
87abcb24
JH
177JH/27 Bug 2404: Use the main-section configuration option "dsn_from" for
178 success-DSN messages. Previously the From: header was always the default
179 one for these; the option was ignored.
6ee11061 180
0a5441fc
JH
181JH/28 Fix the timeout on smtp response to apply to the whole response.
182 Previously it was reset for every read, so a teergrubing peer sending
183 single bytes within the time limit could extend the connection for a
184 long time. Credit to Qualsys Security Advisory Team for the discovery.
185
436bda2a
JH
186JH/29 Fix DSN Final-Recipient: field. Previously it was the post-routing
187 delivery address, which leaked information of the results of local
188 forwarding. Change to the original envelope recipient address, per
189 standards.
190
df98a6ff
JH
191JH/30 Bug 2411: Fix DSN generation when RFC 3461 failure notification is
192 requested. Previously not bounce was generated and a log entry of
193 error ignored was made.
194
21aa0597
JH
195JH/31 Avoid re-expansion in ${sort } expansion. (CVE-2019-13917)
196
f3ebb786
JH
197JH/32 Introduce a general tainting mechanism for values read from the input
198 channel, and values derived from them. Refuse to expand any tainted
199 values, to catch one form of exploit.
200
9fa4d5b4
RJ
201JH/33 Bug 2413: Fix dkim_strict option. Previously the expansion result
202 was unused and the unexpanded text used for the test. Found and
203 fixed by Ruben Jenster.
204
bd231acd
JH
205JH/34 Fix crash after TLS shutdown. When the TCP/SMTP channel was left open,
206 an attempt to use a TLS library read routine dereffed a nul pointer,
207 causing a segfault.
208
7b564712
JH
209JH/35 Bug 2409: filter out-of-spec chars from callout response before using
210 them in our smtp response.
211
9c6881f8 212JH/36 Have the general router option retry_use_local_part default to true when
dbbf21a7
JH
213 any of the restrictive preconditions are set (to anything). Previously it
214 was only for check_local user. The change removes one item of manual
215 configuration which is required for proper retries when a remote router
216 handles a subset of addresses for a domain.
217
9c6881f8
JH
218JH/37 Appendfile: when evaluating quota use (non-quota_size_regex) take the file
219 link count into consideration.
220
7d8d08c4
JH
221HS/04 Fix handling of very log lines in -H files. If a -<key> <value> line
222 caused the extension of big_buffer, the following lines were ignored.
223
224JH/38 Bug 1395: Teach the DNS negative-cache about TTL value from the SOA in
225 accordance with RFC 2308. Previously there was no expiry, so a longlived
226 receive process (eg. due to ACL delays) versus a short SOA value could
227 surprise.
228
c3aefacc
HSHR
229HS/05 Handle trailing backslash gracefully. (CVE-2019-15846)
230
1a2e76e1
JH
231JH/39 Promote DMARC support to mainline.
232
d6c829b9
JH
233JH/40 Bug 2452: Add a References: header to DSNs.
234
49132a3b
JH
235JH/41 With GnuTLS 3.6.0 (and later) do not attempt to manage Diffie-Hellman
236 parameters. The relevant library call is documented as "Deprecated: This
237 function is unnecessary and discouraged on GnuTLS 3.6.0 or later. Since
238 3.6.0, DH parameters are negotiated following RFC7919."
239
ab0e957b 240HS/06 Change the default of dnssec_request_domains to "*"
40ed89b3 241
c5040dfd
JH
242JH/42 Bug 2545: Fix CHUNKING for all RCPT commands rejected. Previously we
243 carried on and emitted a BDAT command, even when PIPELINING was not
244 active.
245
13e70f55
JH
246JH/43 Bug 2465: Fix taint-handling in dsearch lookup. Previously a nontainted
247 buffer was used for the filename, resulting in a trap when tainted
248 arguments (eg. $domain) were used.
249
2043336d
JH
250JH/44 With OpenSSL 1.1.1 (onwards) disable renegotiation for TLS1.2 and below;
251 recommended to avoid a possible server-load attack. The feature can be
252 re-enabled via the openssl_options main cofiguration option.
253
b2d54f83
JH
254JH/45 local_scan API: documented the current smtp_printf() call. This changed
255 for version 4.90 - adding a "more data" boolean to the arguments.
b3317cfa
JH
256 Bumped the ABI version number also, this having been missed previously;
257 release versions 4.90 to 4.92.3 inclusive were effectively broken in
258 respect of usage of smtp_printf() by either local_scan code or libraries
259 accessed via the ${dlfunc } expansion item. Both will need coding
260 adjustment for any calls to smtp_printf() to match the new function
261 signature; a FALSE value for the new argument is always safe.
b2d54f83 262
1bf08084
JH
263JH/46 FreeBSD: fix use of the sendfile() syscall. The shim was not updating
264 the file-offset (which the Linux syscall does, and exim expects); this
265 resulted in an indefinite loop.
266
7af11cd0
JH
267JH/47 ARC: fix crash in signing, triggered when a configuration error failed
268 to do ARC verification. The Authentication-Results: header line added
269 by the configuration then had no ARC item.
270
c5040dfd 271
d99f54e4
JH
272Exim version 4.92
273-----------------
274
9723f966
JH
275JH/01 Remove code calling the customisable local_scan function, unless a new
276 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
277
278JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
64b67b65
JH
279 non-signal-safe functions being used.
280
281JH/03 Bug 2269: When presented with a received message having a stupidly large
282 number of DKIM-Signature headers, disable DKIM verification to avoid
283 a resource-consumption attack. The limit is set at twenty.
9723f966 284
ea7b1f16
JH
285JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
286 report of oldest_pass in ${authres } in consequence, and separate out
287 some descriptions of reasons for verification fail.
288
cfbb0d24
JH
289JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
290 files in the spool were present and unlocked. A queue-runner could spot
291 them, resulting in a duplicate delivery. Fix that by doing the unlock
0488984d
JH
292 after the unlink. Investigation by Tim Stewart. Take the opportunity to
293 add more error-checking on spoolfile handling while that code is being
cfbb0d24
JH
294 messed with.
295
85defcf0
PP
296PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
297 No known attacks, no CVE, this is defensive hardening.
298
1bd642c2
JH
299JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
300 a queue-runner could start a delivery while other operations were ongoing.
301 Cutthrough delivery was a common victim, resulting in duplicate delivery.
302 Found and investigated by Tim Stewart. Fix by using the open message data
303 file handle rather than opening another, and not locally closing it (which
304 releases a lock) for that case, while creating the temporary .eml format
305 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
306
2ddb4094
JH
307JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
308 $sender_verify_failure/$recipient_verify_failure to "random".
309
1613fd68
JH
310JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
311 legitimate.
312
e6057245
JH
313JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
314 Previously this would segfault.
315
7b9822bf
JH
316JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
317 segfault.
318
d8d9f930
JH
319JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
320 like zero, since the resolver should be doing this for us, But we need one
321 as a CNAME but no MX presence gets the CNAME returned; we need to check
322 that doesn't point to an MX to declare it "no MX returned" rather than
323 "error, loop". A new main option is added so the older capability of
324 following some limited number of chain links is maintained.
325
61e3f250
JH
326JH/12 Add client-ip info to non-pass iprev ${authres } lines.
327
7a8b9519
JH
328JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
329 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
330 now-deprecated earlier definitions used only specified the range up to TLS
331 1.2 (in the older-version library docs).
332
49e56fb3
JH
333JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
334
74f1a423
JH
335JH/15 Rework TLS client-side context management. Stop using a global, and
336 explicitly pass a context around. This enables future use of TLS for
337 connections to service-daemons (eg. malware scanning) while a client smtp
338 connection is using TLS; with cutthrough connections this is quite likely.
339
5054c4fd 340JH/16 Fix ARC verification to do AS checks in reverse order.
611b1961
JH
341
342JH/17 Support a "tls" option on the ${readsocket } expansion item.
5054c4fd 343
946515bf
JH
344JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
345 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
346 Previously the "utf8" would be re-prepended for every additional message.
347
8c34c611
JH
348JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
349 Previously thery were accepted, resulting in issues when attempting to
350 forward messages to a non-supporting MTA.
351
1bca4f5f
PP
352PP/02 Let -n work with printing macros too, not just options.
353
8a6b4e02
JH
354JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
355 one parent address was copied, and bogus data was used at delivery-logging
356 time. Either a crash (after delivery) or bogus log data could result.
357 Discovery and analysis by Tim Stewart.
358
0a682b6c
PP
359PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
360 Previously if the string ended mid-character, we did not insert the
361 promised '?' replacement.
362
c2c451ac
PP
363PP/04 Documentation: current string operators work on bytes, not codepoints.
364
8768d548
JH
365JH/21 Change as many as possible of the global flags into one-bit bitfields; these
366 should pack well giving a smaller memory footprint so better caching and
367 therefore performance. Group the declarations where this can't be done so
368 that the byte-sized flag variables are not interspersed among pointer
369 variables, giving a better chance of good packing by the compiler.
370
5455f548
JH
371JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
372 non-null, to avoid issues with sites running BATV. Previously reports were
373 sent with an empty envelope sender so looked like bounces.
374
25beaee4
MK
375JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
376 The ignore_error flag wasn't being returned from the filter subprocess so
377 was not set for later routers. Investigation and fix by Matthias Kurz.
378
7ea1237c 379JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
570cb1bd 380 and a msg:complete for the whole, when a message is manually removed using
7ea1237c
MK
381 -Mrm. Developement by Matthias Kurz, hacked on by JH.
382
ebda598a
JH
383JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
384 a "Gnu special" function, asprintf() in the DB utility binary builds; I
385 hope that is portable enough.
386
570cb1bd
JH
387JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
388 requiring a known-CA anchor certificate; make it now rely entirely on the
389 TLSA as an anchor. Checking the name on the leaf cert against the name
390 on the A-record for the host is still done for TA (but not for EE mode).
391
eb58ddf5
JH
392JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
393 included in delivery lines for non-proxied connections, when compiled with
394 SUPPORT_SOCKS and running with proxy logging enabled.
395
ffbc20ed
MK
396JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
397 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
398 move the existing event to fire before the normal logging of message
399 failure so that custom logging is bracketed by normal logging.
400
4e928780
MK
401JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
402 msg:fail:internal event. Developement by Matthias Kurz.
403
75c121f0 404JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
059f2ace 405 far too small for todays use of crypto signatures stored there. Go all
75c121f0
JH
406 the way to the max DNS message size of 64kB, even though this might be
407 overmuch for IOT constrained device use.
408
e30f4f43
JH
409JH/31 Fix a bad use of a copy function, which could be used to pointlessly
410 copy a string over itself. The library routine is documented as not
411 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
412
a45431fa
JH
413JH/32 For main options check_spool_space and check_inode_space, where the
414 platform supports 64b integers, support more than the previous 2^31 kB
415 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
416 the previous G, M, k.
417
c0fb53b7
JH
418JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
419 $authenticated_fail_id variable on authentication failure. Previously
420 it was unset.
421
6aac3239
JH
422JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
423 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
424 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
425 GNUTLS_SEC_PARAM_MEDIUM.
426
5a2a0989
JH
427JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server
428 side. Previously we would continue as if no SNI had been received.
429
de6f74f2 430JH/36 Harden the handling of string-lists. When a list consisted of a sole
b72f857f
JH
431 "<" character, which should be a list-separator specification, we walked
432 off past the nul-terimation.
433
de6f74f2
JH
434JH/37 Bug 2341: Send "message delayed" warning MDNs (restricted to external
435 causes) even when the retry time is not yet met. Previously they were
436 not, meaning that when (say) an account was over-quota and temp-rejecting,
437 and multiple senders' messages were queued, only one sender would get
438 notified on each configured delay_warning cycle.
439
aa6e77af 440JH/38 Bug 2351: Log failures to extract envelope addresses from message headers.
aaf3e414 441
25fa0868
JH
442JH/39 OpenSSL: clear the error stack after an SSL_accept(). With anon-auth
443 cipher-suites, an error can be left on the stack even for a succeeding
444 accept; this results in impossible error messages when a later operation
445 actually does fail.
446
cb6bd80f
JH
447AM/01 Bug 2359: GnuTLS: repeat lowlevel read and write operations while they
448 return error codes indicating retry. Under TLS1.3 this becomes required.
449
450JH/40 Fix the feature-cache refresh for EXPERIMENTAL_PIPE_CONNECT. Previously
451 it only wrote the new authenticators, resulting in a lack of tracking of
452 peer changes of ESMTP extensions until the next cache flush.
518b70e9 453
56ac062a
JH
454JH/41 Fix the loop reading a message header line to check for integer overflow,
455 and more-often against header_maxsize. Previously a crafted message could
456 induce a crash of the recive process; now the message is cleanly rejected.
457
ae63862b
MA
458JH/42 Bug 2366: Fix the behaviour of the dkim_verify_signers option. It had
459 been totally disabled for all of 4.91. Discovery and fix by "Mad Alex".
460
9723f966 461
bb264f6b
JH
462Exim version 4.91
463-----------------
459fca58 464
c39c8870 465GF/01 DEFER rather than ERROR on redis cluster MOVED response.
bb264f6b
JH
466 When redis_servers is set to a list of > 1 element, and the Redis servers
467 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
468 case of MOVED into a DEFER case instead, thus moving the query onto the
469 next server in the list. For a cluster of N elements, all N servers must
470 be defined in redis_servers.
c39c8870 471
0800ef83
GF
472GF/02 Catch and remove uninitialized value warning in exiqsumm
473 Check for existence of @ARGV before looking at $ARGV[0]
474
459fca58
JH
475JH/01 Replace the store_release() internal interface with store_newblock(),
476 which internalises the check required to safely use the old one, plus
477 the allocate and data copy operations duplicated in both (!) of the
478 extant use locations.
479
944e8b37
JH
480JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
481 modifier. This matches the restriction on the commandline.
482
bbfb5dcd
JH
483JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
484 Previously only the last row was returned.
485
a05d3e34
JH
486JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
487 we assumed that tags in the header were well-formed, and parsed the
488 element content after inspecting only the first char of the tag.
489 Assumptions at that stage could crash the receive process on malformed
490 input.
491
ce93c6d8
JH
492JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
493 While running the DKIM ACL we operate on the Permanent memory pool so that
494 variables created with "set" persist to the DATA ACL. Also (at any time)
495 DNS lookups that fail create cache records using the Permanent pool. But
496 expansions release any allocations made on the current pool - so a dnsdb
497 lookup expansion done in the DKIM ACL releases the memory used for the
498 DNS negative-cache, and bad things result. Solution is to switch to the
499 Main pool for expansions.
500 While we're in that code, add checks on the DNS cache during store_reset,
501 active in the testsuite.
502 Problem spotted, and debugging aided, by Wolfgang Breyha.
503
2577f55f
JH
504JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
505 When none of the hosts presented to a transport match an already-open
506 connection, close it and proceed with the list. Previously we would
507 queue the message. Spotted by Lena with Yahoo, probably involving
508 round-robin DNS.
509
5b6f7658
JH
510JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
511 Previously a spurious "250 OK id=" response was appended to the proper
512 failure response.
513
c11d665d
JH
514JH/08 The "support for" informational output now, which built with Content
515 Scanning support, has a line for the malware scanner interfaces compiled
516 in. Interface can be individually included or not at build time.
e5ba8aa7
JH
517
518JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
519 by the template makefile "src/EDITME". The "STREAM" support for an older
520 ClamAV interface method is removed.
c11d665d 521
ba0e37b1
JH
522JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
523 rows affected is given instead).
524
96508de1
JH
525JH/11 The runtime Berkeley DB library version is now additionally output by
526 "exim -d -bV". Previously only the compile-time version was shown.
527
06fdb9f7
JH
528JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
529 SMTP connection. Previously, when one had more receipients than the
530 first, an abortive onward connection was made. Move to full support for
531 multiple onward connections in sequence, handling cutthrough connection
532 for all multi-message initiating connections.
533
f83a760f
JH
534JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
535 routers. Previously, a multi-recipient message would fail to match the
536 onward-connection opened for the first recipient, and cause its closure.
537
f1fed05b
JH
538JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
539 a timeout on read on a GnuTLS initiating connection, resulting in the
540 initiating connection being dropped. This mattered most when the callout
541 was marked defer_ok. Fix to keep the two timeout-detection methods
542 separate.
543
051d5efa
JH
544JH/15 Relax results from ACL control request to enable cutthrough, in
545 unsupported situations, from error to silently (except under debug)
546 ignoring. This covers use with PRDR, frozen messages, queue-only and
547 fake-reject.
548
cf3cd306
HSHR
549HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
550
744976d4
JH
551JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
552 metadata, resulting in a crash in free().
553
aab9a843 554PP/01 Fix broken Heimdal GSSAPI authenticator integration.
7be14582 555 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
aab9a843 556 Broken also in d185889f4, with init system revamp.
7be14582 557
83d2a861
JH
558JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
559 Previously we abruptly closed the connection after reading a malware-
560 found indication; now we go on to read the "scan ok" response line,
561 and send a quit.
562
6741531c
JH
563JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
564 ACL. Previously, a crash would result.
565
85e03244
JH
566JH/19 Speed up macro lookups during configuration file read, by skipping non-
567 macro text after a replacement (previously it was only once per line) and
568 by skipping builtin macros when searching for an uppercase lead character.
569
c0635b6d
JH
570JH/20 DANE support moved from Experimental to mainline. The Makefile control
571 for the build is renamed.
572
b808677c
JH
573JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
574 was allocated for every new TLS startup, meaning one per message. Fix
575 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
576
6678c382
JH
577JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
578 reported the original. Fix to report (as far as possible) the ACL
579 result replacing the original.
580
dec766a1
WB
581JH/23 Fix memory leak during multi-message connections using STARTTLS under
582 OpenSSL. Certificate information is loaded for every new TLS startup,
583 and the resources needed to be freed.
584
15ae19f9
JH
585JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
586
e6532c4a
JH
587JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
588 was not propagated.
589
2556b3c6
SA
590JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
591 DATA response info to the (existing) per-recipient response info for
592 the "C=" log element. It can have useful tracking info from the
593 destination system. Patch from Simon Arlott.
594
fc8cd529
JH
595JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
596 length value. Previously this would segfault.
597
71bb51e0
HSHR
598HS/02 Support Avast multiline protoocol, this allows passing flags to
599 newer versions of the scanner.
600
e04bfa34
JH
601JH/28 Ensure that variables possibly set during message acceptance are marked
602 dead before release of memory in the daemon loop. This stops complaints
603 about them when the debug_store option is enabled. Discovered specifically
604 for sender_rate_period, but applies to a whole set of variables.
c232fc99
JH
605 Do the same for the queue-runner and queue-list loops, for variables set
606 from spool message files. Do the same for the SMTP per-message loop, for
607 certain variables indirectly set in ACL operations.
e04bfa34 608
ecce6d9a
JH
609JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
610 as a multi-recipient message from a mailinglist manager). The coding had
611 an arbitrary cutoff number of characters while checking for more input;
612 enforced by writing a NUL into the buffer. This corrupted long / fast
613 input. The problem was exposed more widely when more pipelineing of SMTP
614 responses was introduced, and one Exim system was feeding another.
615 The symptom is log complaints of SMTP syntax error (NUL chars) on the
616 receiving system, and refused recipients seen by the sending system
617 (propating to people being dropped from mailing lists).
618 Discovered and pinpointed by David Carter.
619
c9cf9ac4
JH
620JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
621 replaced by the ${authresults } expansion.
622
b3b37076
JH
623JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
624
830832c9
HSHR
625HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
626 allows proper process termination in container environments.
627
f64e8b5f
JH
628JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
629 Previously the "final dot" had a newline after it; ensure it is CR,LF.
630
8f0776b5
JH
631JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
632 and "err_perm", deprecated since 4.83 when the RFC-defined words
633 "temperror" and "permerror" were introduced.
634
857eaf37
JH
635JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
636 transport-filters or DKIM-signing. The restriction was lost in the
637 consolidation of verify-callout and delivery SMTP handling.
5add7dc4 638 Extend the restriction to also cover ARC-signing.
857eaf37 639
c85476e9
JH
640JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
641 in defer=pass mode supply a 450 to the initiator. Previously the message
642 would be spooled.
643
405074ad
PP
644PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
645 tls_require_ciphers is used as before.
646
eb445b04
HSHR
647HS/03 Malware Avast: Better match the Avast multiline protocol. Add
648 "pass_unscanned". Only tmpfails from the scanner are written to
649 the paniclog, as they may require admin intervention (permission
650 denied, license issues). Other scanner errors (like decompression
651 bombs) do not cause a paniclog entry.
ad93c40f 652
d342446f
JH
653JH/36 Fix reinitialisation of DKIM logging variable between messages.
654 Previously it was possible to log spurious information in receive log
655 lines.
656
a28050f8
JH
657JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
658 triggered odd behaviour from Outlook Express clients.
659
ddd16464
PP
660PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
661 suffix list.
662
321ef002
JH
663JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
664 since the IETF WG has not yet settled on that versus the original
665 "bare" representation.
666
3203e7ba
JH
667JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
668 Previously the millisecond value corrupted the output.
669 Fix also for syslog_pid=no and log_selector +pid, for which the pid
670 corrupted the output.
671
bbfb5dcd 672
acfc18c3
PP
673Exim version 4.90
674-----------------
675
676JH/01 Rework error string handling in TLS interface so that the caller in
677 more cases is responsible for logging. This permits library-sourced
678 string to be attached to addresses during delivery, and collapses
679 pairs of long lines into single ones.
680
856d1e16
PP
681PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
682 during configuration. Wildcards are allowed and expanded.
683
b9df1829
JH
684JH/02 Rework error string handling in DKIM to pass more info back to callers.
685 This permits better logging.
686
875512a3
JH
687JH/03 Rework the transport continued-connection mechanism: when TLS is active,
688 do not close it down and have the child transport start it up again on
689 the passed-on TCP connection. Instead, proxy the child (and any
690 subsequent ones) for TLS via a unix-domain socket channel. Logging is
691 affected: the continued delivery log lines do not have any DNSSEC, TLS
5013d912 692 Certificate or OCSP information. TLS cipher information is still logged.
875512a3 693
fc3f96af
JH
694JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
695 identical IP addresses on different listening ports. Will also affect
696 "exiwhat" output.
697
98913c8e
BK
698PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
699 add noisy ifdef guards to special-case this sillyness.
700 Patch from Bernd Kuhls.
701
8d909960
JH
702JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
703 than 255 are no longer allowed.
704
7006ee24
JH
705JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
706 Disable the session-cache too, which might reduce our load. Since we
707 currrectly use a new context for every connection, both as server and
708 client, there is no benefit for these.
709 GnuTLS appears to not support tickets server-side by default (we don't
710 call gnutls_session_ticket_enable_server()) but client side is enabled
711 by default on recent versions (3.1.3 +) unless the PFS priority string
712 is used (3.2.4 +).
713
6e411084
PP
714PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
715 <https://reproducible-builds.org/specs/source-date-epoch/>.
716
4c2471ca
JH
717JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
718 the check for any unsuccessful recipients did not notice the limit, and
719 erroneously found still-pending ones.
720
4e910c01
JH
721JH/08 Pipeline CHUNKING command and data together, on kernels that support
722 MSG_MORE. Only in-clear (not on TLS connections).
723
42055a33
JH
724JH/09 Avoid using a temporary file during transport using dkim. Unless a
725 transport-filter is involved we can buffer the headers in memory for
726 creating the signature, and read the spool data file once for the
727 signature and again for transmission.
728
eeb35890
JH
729JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
730 4.77 as the kernel support then wasn't solid, having issues in 64bit
7d758a6a 731 mode. Now, it's been long enough. Add support for FreeBSD also.
eeb35890 732
b7d3afcf
JH
733JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
734 case where the routing stage had gathered several addresses to send to
735 a host before calling the transport for the first, we previously failed
736 to close down TLS in the old transport process before passing the TCP
737 connection to the new process. The new one sent a STARTTLS command
738 which naturally failed, giving a failed delivery and bloating the retry
739 database. Investigation and fix prototype from Wolfgang Breyha.
740
40525d07
JH
741JH/12 Fix check on SMTP command input synchronisation. Previously there were
742 false-negatives in the check that the sender had not preempted a response
743 or prompt from Exim (running as a server), due to that code's lack of
a5ffa9b4 744 awareness of the SMTP input buffering.
40525d07 745
f33875c3
PP
746PP/04 Add commandline_checks_require_admin option.
747 Exim drops privileges sanely, various checks such as -be aren't a
748 security problem, as long as you trust local users with access to their
749 own account. When invoked by services which pass untrusted data to
750 Exim, this might be an issue. Set this option in main configuration
751 AND make fixes to the calling application, such as using `--` to stop
752 processing options.
753
a5ffa9b4
JH
754JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
755 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
756 responses to those, into a single TLS record each way (this usually means
757 a single packet). As a side issue, smtp_enforce_sync now works on TLS
758 connections.
925ac8e4 759
6600985a
PP
760PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
761 affects you only if you're dancing at the edge of the param size limits.
762 If you are, and this message makes sense to you, then: raise the
763 configured limit or use OpenSSL 1.1. Nothing we can do for older
764 versions.
765
ac4d558b
JH
766JH/14 For the "sock" variant of the malware scanner interface, accept an empty
767 cmdline element to get the documented default one. Previously it was
768 inaccessible.
769
e69636bc
JH
770JH/15 Fix a crash in the smtp transport caused when two hosts in succession
771 are unsuable for non-message-specific reasons - eg. connection timeout,
772 banner-time rejection.
773
a843a57e
JH
774JH/16 Fix logging of delivery remote port, when specified by router, under
775 callout/hold.
776
8e041ae0
PP
777PP/06 Repair manualroute's ability to take options in any order, even if one
778 is the name of a transport.
833c70bc
PP
779 Fixes bug 2140.
780
35a04365
HSHR
781HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
782
4226691b
JH
783JH/17 Change the list-building routines interface to use the expanding-string
784 triplet model, for better allocation and copying behaviour.
785
d185889f
JH
786JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
787 Previously it was constructed the first time a possibly-matching string
788 was met in the configuration file input during startup; now it is done
789 during compilation.
790
0a6c178c
JH
791JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
792 compatible one, to avoid the (poorly documented) possibility of a config
793 file in the working directory redirecting the DB files, possibly correpting
02745400 794 some existing file. CVE-2017-10140 assigned for BDB.
0a6c178c 795
fae8970d
JH
796JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
797 cache-hot. Previously, although the result was properly cached, the
798 initial verify call returned a defer.
799
ad1a76fe 800JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
14de8063
JH
801 the main verify for receipient in uncached-mode.
802
ad1a76fe
JH
803JH/22 Retire historical build files to an "unsupported" subdir. These are
804 defined as "ones for which we have no current evidence of testing".
805
135e9496
JH
806JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
807 if present. Previously it was ignored.
808
f2ed27cf
JH
809JH/24 Start using specified-initialisers in C structure init coding. This is
810 a C99 feature (it's 2017, so now considered safe).
811
7eb0e5d2
JH
812JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
813 if was a fixed-sized field and bitmask ops via macros; it is now more
814 extensible.
815
4f9f4be4
816PP/07 GitHub PR 56: Apply MariaDB build fix.
817 Patch provided by Jaroslav Škarvada.
818
dc4de9cc
PP
819PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
820 during Coverity cleanups [4.87 JH/47]
821 Diagnosis and fix provided by Michael Fischer v. Mollard.
822
ea18931d
JH
823JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
824 the right size to place the terminating semicolon on its own folded
825 line, the header hash was calculated to an incorrect value thanks to
826 the (relaxed) space the fold became.
827
0768462d 828HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
2cee425a
HSHR
829 and confused the parent.
830
848214f7
JH
831JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
832 which could crash as a result. This could lead to undeliverable messages.
833
9e0ed81f
JH
834JH/28 Logging: "next input sent too soon" now shows where input was truncated
835 for log purposes.
836
2540f2f8
JH
837JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
838 matters on fast-turnover and PID-randomising systems, which were getting
839 out-of-order delivery.
840
e5ab0ba9
JH
841JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
842 a possibly-overlapping copy. The symptom was that "Remote host closed
843 connection in response to HELO" was logged instead of the actual 4xx
844 error for the HELO.
845
e99a3a6c
JH
846JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
847 Previously only that bufferd was discarded, resulting in SYMTP command
848 desynchronisation.
849
18067c75
JH
850JH/32 DKIM: when a message has multiple signatures matching an identity given
851 in dkim_verify_signers, run the dkim acl once for each. Previously only
852 one run was done. Bug 2189.
853
72934ba7
JH
854JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
855 "panic the current process" to "deliberately defer". The panic log is
856 still written with the problem list name; the mail and reject logs now
857 get a temp-reject line for the message that was being handled, saying
858 something like "domains check lookup or other defer". The SMTP 451
859 message is still "Temporary local problem".
860
625667b6
JH
861JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
862 A crafted sequence of BDAT commands could result in in-use memory beeing
b488395f
JH
863 freed. CVE-2017-16943.
864
865HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
866 from SMTP input. Previously it was always done; now only done for DATA
867 and not BDAT commands. CVE-2017-16944.
625667b6 868
d21bf202
JH
869JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
870 to the message (such as an overlong header line). Previously this was
871 not done and we did not exit BDAT mode. Followon from the previous item
872 though a different problem.
873
acfc18c3 874
fd047340 875Exim version 4.89
acfc18c3 876-----------------
4c57a40e 877
9427e879 878JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
4c04137d 879 than -2003 did; needs libidn2 in addition to libidn.
fd047340 880
7b283890
JH
881JH/02 The path option on a pipe transport is now expanded before use.
882
4c57a40e
PP
883PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
884 Patch provided by "Björn", documentation fix added too.
885
5d036699
JH
886JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
887 missing a wire-to-host endian conversion.
888
f4630439
JH
889JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
890 close after a BDAT command line could be taken as a following command,
891 giving a synch failure. Fix by only checking for synch immediately
892 before acknowledging the chunk.
893
f988ce57
JS
894PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
895 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
896 macro. Patches provided by Josh Soref.
897
bd8fbe36
JH
898JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
899 Previously we did not; the RFC seems ambiguous and VRFY is not listed
900 by IANA as a service extension. However, John Klensin suggests that we
901 should.
902
903JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
b895f4b2
JH
904 the dkim code may be unix-mode line endings rather than smtp wire-format
905 CRLF, so prepend a CR to any bare LF.
fd047340 906
bd8fbe36 907JH/07 Rationalise the coding for callout smtp conversations and transport ones.
902fbd69
JH
908 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
909
bd8fbe36
JH
910JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
911 the first were themselves being wrongly included in the feed into dkim
912 processing; with most chunk sizes in use this resulted in an incorrect
913 body hash calculated value.
914
eea19017
JH
915JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
916 DKIM signature block, for verification. Although advised against by
917 standards it is specifically not ruled illegal.
918
44e6651b
JH
919JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
920
921JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
922 missing a body hash (the bh= tag).
923
924JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
925 It seems that HAProxy sends the Proxy Protocol information in clear and
926 only then does a TLS startup, so do the same.
927
928JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
929 TCP connections (such as for Spamd) unless the daemon successfully set
930 Fast Open mode on its listening sockets. This fixes breakage seen on
931 too-old kernels or those not configured for Fast Open, at the cost of
932 requiring both directions being enabled for TFO, and TFO never being used
933 by non-daemon-related Exim processes.
934
935JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
936 endings, at least on the first header line. Try to canonify any that get
937 past that check, despite the cost.
938
b6040544
JH
939JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
940 now limited to an arbitrary five deep, while parsing addresses with the
941 strip_excess_angle_brackets option enabled.
942
f700ea4d
PP
943PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
944 instead leave the unprompted TLS handshake in socket buffer for the
945 TLS library to consume.
946
da88acae
PP
947PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
948
f6ef9370
PP
949PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
950
90341c71
JH
951JH/16 Drop variables when they go out of scope. Memory management drops a whole
952 region in one operation, for speed, and this leaves assigned pointers
953 dangling. Add checks run only under the testsuite which checks all
954 variables at a store-reset and panics on a dangling pointer; add code
955 explicitly nulling out all the variables discovered. Fixes one known
956 bug: a transport crash, where a dangling pointer for $sending_ip_address
957 originally assigned in a verify callout, is re-used.
958
1ec2ab36
PP
959PP/06 Drop '.' from @INC in various Perl scripts.
960
961PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
962
963PP/08 Reduce a number of compilation warnings under clang; building with
964 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
965 should be warning-free.
966
8b2b9480
PP
967JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
968
969HS/01 Fix portability problems introduced by PP/08 for platforms where
970 realloc(NULL) is not equivalent to malloc() [SunOS et al].
971
d953610f
HSHR
972HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
973 chunk. This allows us to accept broken chunked messages. We need a more
974 general solution here.
975
7dc5f827
PP
976PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
977 already-broken messages in the queue.
978
4bb432cb
PP
979JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
980
3b1a84c8
PP
981JH/19 Fix reference counting bug in routing-generated-address tracking.
982
902fbd69 983
8d042305
JH
984Exim version 4.88
985-----------------
4c57a40e 986
9094b84b
JH
987JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
988 supports it and a size is available (ie. the sending peer gave us one).
8d042305 989
03d5892b
JH
990JH/02 The obsolete acl condition "demime" is removed (finally, after ten
991 years of being deprecated). The replacements are the ACLs
992 acl_smtp_mime and acl_not_smtp_mime.
993
4b0fe319
JH
994JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
995 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
996 or even an in-clear connection were permitted. Now, if the host lookup
997 was dnssec and dane was requested then the host is only used if the
998 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
999 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
1000 if one fails this test.
1001 This means that a poorly-configured remote DNS will make it incommunicado;
1002 but it protects against a DNS-interception attack on it.
1003
789f8a4f
JH
1004JH/04 Bug 1810: make continued-use of an open smtp transport connection
1005 non-noisy when a race steals the message being considered.
1006
23bb6982 1007JH/05 If main configuration option tls_certificate is unset, generate a
f59aaaaa 1008 self-signed certificate for inbound TLS connections.
23bb6982 1009
0bd1b1ed 1010JH/06 Bug 165: hide more cases of password exposure - this time in expansions
f42deca9 1011 in rewrites and routers.
0bd1b1ed 1012
20b9a2dc
JH
1013JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
1014 and logged a warning sing 4.83; now they are a configuration file error.
1015
05392bbc
JH
1016JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
1017 (lacking @domain). Apply the same qualification processing as RCPT.
1018
1a6230a3
JH
1019JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
1020
cfab9d68
JH
1021JH/10 Support ${sha256:} applied to a string (as well as the previous
1022 certificate).
1023
98c82a3d
JH
1024JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
1025 a cutthrough deliver is pending, as we always want to make a connection.
1026 This also avoids re-routing the message when later placing the cutthrough
1027 connection after a verify cache hit.
1028 Do not update it with the verify result either.
1029
1030JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
1031 when routing results in more than one destination address.
1032
ae8386f0
JH
1033JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
1034 signing (which inhibits the cutthrough capability). Previously only
1035 the presence of an option was tested; now an expansion evaluating as
1036 empty is permissible (obviously it should depend only on data available
1037 when the cutthrough connection is made).
1038
0d9fa8c0
JH
1039JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
1040 the relevant preceding SMTP command did not note the pipelining mode.
1041
3581f321
JH
1042JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
1043 Previously they were not counted.
1044
ef3a1a30
JH
1045JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
1046 as one having no matching records. Previously we deferred the message
1047 that needed the lookup.
1048
4c04137d 1049JH/17 Fakereject: previously logged as a normal message arrival "<="; now
27b9e5f4
JH
1050 distinguished as "(=".
1051
1435d4b2
JH
1052JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
1053 for missing MX records. Previously it only worked for missing A records.
1054
eea0defe
JB
1055JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
1056
1057JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
1058 after the data-go-ahead and data-ack. Patch from Jason Betts.
860cdda2 1059
4c04137d 1060JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
72a201e2
TM
1061 even for a "none" policy. Patch from Tony Meyer.
1062
1c788856
JH
1063JH/22 Fix continued use of a connection for further deliveries. If a port was
1064 specified by a router, it must also match for the delivery to be
1065 compatible.
1066
e3b1f624
JH
1067JH/23 Bug 1874: fix continued use of a connection for further deliveries.
1068 When one of the recipients of a message was unsuitable for the connection
1069 (has no matching addresses), we lost track of needing to mark it
1070 deferred. As a result mail would be lost.
1071
a57ce043
JH
1072JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
1073
f59aaaaa 1074JH/25 Decoding ACL controls is now done using a binary search; the source code
2d009132
JH
1075 takes up less space and should be simpler to maintain. Merge the ACL
1076 condition decode tables also, with similar effect.
d7bed771 1077
d1f9fb42
JH
1078JH/26 Fix problem with one_time used on a redirect router which returned the
1079 parent address unchanged. A retry would see the parent address marked as
1080 delivered, so not attempt the (identical) child. As a result mail would
1081 be lost.
1082
92b0827a
JH
1083JH/27 Fix a possible security hole, wherein a process operating with the Exim
1084 UID can gain a root shell. Credit to http://www.halfdog.net/ for
1085 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
1086 itself :(
1087
ddf1b11a
JH
1088JH/28 Enable {spool,log} filesystem space and inode checks as default.
1089 Main config options check_{log,spool}_{inodes,space} are now
1090 100 inodes, 10MB unless set otherwise in the configuration.
1091
3cc3f762
JH
1092JH/29 Fix the connection_reject log selector to apply to the connect ACL.
1093 Previously it only applied to the main-section connection policy
1094 options.
1095
ae5afa61
JH
1096JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
1097
317e40ac
PP
1098PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
1099 by me. Added RFC7919 DH primes as an alternative.
1100
8b0fb68e
PP
1101PP/02 Unbreak build via pkg-config with new hash support when crypto headers
1102 are not in the system include path.
1103
ad7fc6eb 1104JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
f59aaaaa 1105 GnuTLS, when a session startup failed (eg because the client disconnected)
ad7fc6eb
JH
1106 Exim did stdio operations after fclose. This was exposed by a recent
1107 change which nulled out the file handle after the fclose.
ad7fc6eb 1108
ee5b1e28
JH
1109JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
1110 signed directly by the cert-signing cert, rather than an intermediate
1111 OCSP-signing cert. This is the model used by LetsEncrypt.
1112
5ddc9771
JH
1113JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
1114
8d73599f
JH
1115HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
1116 an incoming connection.
1117
446415f5
HSHR
1118HS/02 Bug 1802: Do not half-close the connection after sending a request
1119 to rspamd.
1120
8e53a4fc
HSHR
1121HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
1122 fallback to "prime256v1".
8d042305 1123
87cb4a16 1124JH/34 SECURITY: Use proper copy of DATA command in error message.
4c57a40e 1125 Could leak key material. Remotely exploitable. CVE-2016-9963.
87cb4a16
JH
1126
1127
0d9b78be
JH
1128Exim version 4.87
1129-----------------
4c57a40e 1130
82d14d6a
JH
1131JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
1132 and 3.4.4 - once the server is enabled to respond to an OCSP request
1133 it does even when not requested, resulting in a stapling non-aware
1134 client dropping the TLS connection.
0d9b78be 1135
6c6d6e48
TF
1136TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
1137 support variable-length bit vectors. No functional change.
1138
ac881e27
TF
1139TF/02 Improve the consistency of logging incoming and outgoing interfaces.
1140 The I= interface field on outgoing lines is now after the H= remote
1141 host field, same as incoming lines. There is a separate
1142 outgoing_interface log selector which allows you to disable the
1143 outgoing I= field.
1144
c8899c20
JH
1145JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
1146 If not running log_selector +smtp_connection the mainlog would be held
1147 open indefinitely after a "too many connections" event, including to a
1148 deleted file after a log rotate. Leave the per net connection logging
1149 leaving it open for efficiency as that will be quickly detected by the
1150 check on the next write.
1151
f1b81d81
HSHR
1152HS/01 Bug 1671: Fix post transport crash.
1153 Processing the wait-<transport> messages could crash the delivery
1154 process if the message IDs didn't exist for some reason. When
1155 using 'split_spool_directory=yes' the construction of the spool
1156 file name failed already, exposing the same netto behaviour.
1157
f38917cc
JH
1158JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
1159 mime_regex ACL conditions.
1160
895fbaf2
JH
1161JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
1162 to DSN fail messages (bounces): remote IP, remote greeting, remote response
1163 to HELO, local diagnostic string.
1164
805bb5c3
JH
1165JH/05 Downgrade message for a TLS-certificate-based authentication fail from
1166 log line to debug. Even when configured with a tls authenticator many
1167 client connections are expected to not authenticate in this way, so
1168 an authenticate fail is not an error.
1169
56c2a7be
HSHR
1170HS/02 Add the Exim version string to the process info. This way exiwhat
1171 gives some more detail about the running daemon.
1172
4c04137d 1173JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
14b3c5bc
JH
1174 matter for fast-change records such as DNSBLs.
1175
6f6dedcc
JH
1176JH/07 Bug 1678: Always record an interface option value, if set, as part of a
1177 retry record, even if constant. There may be multiple transports with
1178 different interface settings and the retry behaviour needs to be kept
1179 distinct.
1180
0f557e90
JH
1181JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
1182
1183JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
1184
ec0eb1a3
JH
1185JH/10 Bug 840: fix log_defer_output option of pipe transport
1186
41e93589
JH
1187JH/11 Bug 830: use same host for all RCPTS of a message, even under
1188 hosts_randomize. This matters a lot when combined with mua_wrapper.
1189
98b98887 1190JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
376d2ec0
JH
1191 ${quote_pgsql:<string>} operator.
1192
98b98887
JH
1193JH/13 Bug 1708: avoid misaligned access in cached lookup.
1194
858e91c2
JH
1195JH/14 Change header file name for freeradius-client. Relevant if compiling
1196 with Radius support; from the Gentoo tree and checked under Fedora.
1197
1198JH/15 Bug 1712: Introduce $prdr_requested flag variable
1199
6ff55e50
JH
1200JH/16 Bug 1714: Permit an empty string as expansion result for transport
1201 option transport_filter, meaning no filtering.
1202
3b957582
JB
1203JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
1204
23f3dc67
JH
1205JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
1206 defaults to "*" (all hosts). The variable is now available when not built
4c04137d 1207 with TLS, default unset, mainly to enable keeping the testsuite sane.
23f3dc67
JH
1208 If a server certificate is not supplied (via tls_certificate) an error is
1209 logged, and clients will find TLS connections fail on startup. Presumably
1210 they will retry in-clear.
1211 Packagers of Exim are strongly encouraged to create a server certificate
1212 at installation time.
1213
240c288f
JH
1214HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
1215 with the $config_file variable.
1216
5ef5dd52
JB
1217JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
1218 in transport context, after the attempt, and per-recipient. The latter type
1219 is per host attempted. The event data is the error message, and the errno
1220 information encodes the lookup type (A vs. MX) used for the (first) host,
4c04137d 1221 and the trailing two digits of the smtp 4xx response.
5ef5dd52 1222
e161710d
GF
1223GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
1224 to write to mainlog (or rejectlog, paniclog) in the window between file
1225 creation and permissions/ownership being changed. Particularly affects
1226 installations where exicyclog is run as root, rather than exim user;
1227 result is that the running daemon panics and dies.
1228
a159f203
JH
1229JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
1230
7f06582c
JH
1231JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
1232 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
1233 "pri" and "weight". Note that the previous implicit priority given by the
1234 list order is no longer honoured.
1235
4c04137d 1236JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
abe1010c
JH
1237 for DKIM processing.
1238
f0989ec0
JH
1239JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
1240 by defining SUPPORT_SOCKS.
74f150bf 1241
cee5f132
JH
1242JH/26 Move PROXY support from Experimental to mainline, enabled for a build
1243 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
e6d2a989
JH
1244 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
1245 variables are renamed to proxy_{local,external}_{address,port}.
cee5f132 1246
8c5d388a
JH
1247JH/27 Move Internationalisation support from Experimental to mainline, enabled
1248 for a build by defining SUPPORT_I18N
1249
2d8d625b
JH
1250JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
1251 of the query string, and make ${quote_redis:} do that quoting.
1252
0cbf2b82
JH
1253JH/29 Move Events support from Experimental to mainline, enabled by default
1254 and removable for a build by defining DISABLE_EVENT.
1255
f2f2c91b
JH
1256JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
1257
ce325893
JH
1258JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
1259 cached by the daemon.
1260
de78e2d5
JH
1261JH/32 Move Redis support from Experimental to mainline, enabled for a build
1262 by defining LOOKUP_REDIS. The libhiredis library is required.
1263
379ba7d0
JH
1264JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
1265 keys are given for lookup.
1266
f444c2c7
JH
1267JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
1268 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
07c73177
JH
1269 only supported when built with TLS support. The PolarSSL SHA routines
1270 are still used when the TLS library is too old for convenient support.
f444c2c7 1271
a57b6200
JH
1272JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
1273 openssl_options), for security. OpenSSL forces this from version 1.1.0
1274 server-side so match that on older versions.
1275
07c73177 1276JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
fa01e4f8 1277 allocation for $value could be released as the expansion processing
07c73177 1278 concluded, but leaving the global pointer active for it.
fa01e4f8 1279
4f6ae5c3
JH
1280JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
1281 and to use the domains and local_parts ACL conditions.
1282
1bc460a6
JH
1283JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
1284 incorrectly not doubled on cutthrough transmission, hence seen as a
1285 body-termination at the receiving system - resulting in truncated mails.
62ac2eb7 1286 Commonly the sender saw a TCP-level error, and retransmitted the message
1bc460a6
JH
1287 via the normal store-and-forward channel. This could result in duplicates
1288 received - but deduplicating mailstores were liable to retain only the
1289 initial truncated version.
1290
ab9152ff 1291JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
df3def24 1292
67e87fcf
JH
1293JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1294
ab9152ff
JH
1295JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1296 we're in there, support oversigning also; bug 1309.
1297
af483912
JH
1298JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1299
bc3c7bb7 1300HS/04 Add support for keep_environment and add_environment options.
df3def24 1301
13559da6
JH
1302JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1303 either intentional arithmetic overflow during PRNG, or testing config-
1304 induced overflows.
1305
59eaad2b
JH
1306JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1307 delivery resulted in actual delivery. Cancel cutthrough before DATA
1308 stage.
1309
f9334a28
JH
1310JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1311 rejects a recipient: pass the reject to the originator.
1312
dc8091e7
JH
1313JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1314 Many were false-positives and ignorable, but it's worth fixing the
1315 former class.
1316
dfe7d917
JH
1317JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1318 for the new environment-manipulation done at startup. Move the routines
1319 from being local to tls.c to being global via the os.c file.
1320
93cc2d6e
JH
1321JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1322 an extract embedded as result-arg for a map, the first arg for extract
1323 is unavailable so we cannot tell if this is a numbered or keyed
1324 extraction. Accept either.
1325
13559da6 1326
9c695f6d
JH
1327Exim version 4.86
1328-----------------
4c57a40e 1329
9c695f6d
JH
1330JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1331 expanded.
1332
506900af
JH
1333JH/02 The smtp transport option "multi_domain" is now expanded.
1334
ad07e9ad
JH
1335JH/03 The smtp transport now requests PRDR by default, if the server offers
1336 it.
1337
01a4a5c5 1338JH/04 Certificate name checking on server certificates, when exim is a client,
b3ef41c9 1339 is now done by default. The transport option tls_verify_cert_hostnames
01a4a5c5
JH
1340 can be used to disable this per-host. The build option
1341 EXPERIMENTAL_CERTNAMES is withdrawn.
1342
cb1d7830 1343JH/05 The value of the tls_verify_certificates smtp transport and main options
0e0f3f56 1344 default to the word "system" to access the system default CA bundle.
cb1d7830
JH
1345 For GnuTLS, only version 3.0.20 or later.
1346
610ff438 1347JH/06 Verification of the server certificate for a TLS connection is now tried
6d580f19
JH
1348 (but not required) by default. The verification status is now logged by
1349 default, for both outbound TLS and client-certificate supplying inbound
1350 TLS connections
610ff438 1351
f926e272
JH
1352JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1353 sites use this now.
1354
50dc7409
JH
1355JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1356 Status Notification (bounce) messages are now MIME format per RFC 3464.
1357 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1358 under the control of the dsn_advertise_hosts option, and routers may
1359 have a dsn_lasthop option.
1360
0f0c8159
JH
1361JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1362 default, modifiable by a malware= option. The list separator for
23763898 1363 the options can now be changed in the usual way. Bug 68.
4e71661f 1364
1ad6489e
JH
1365JH/10 The smtp_receive_timeout main option is now expanded before use.
1366
aeaf5db3
JH
1367JH/11 The incoming_interface log option now also enables logging of the
1368 local interface on delivery outgoing connections.
1369
5032d1cf
JH
1370JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1371 if the interface and destination host and port all match.
1372
7e8360e6
JH
1373JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1374 /defer_ok option.
1375
c5f280e2
AL
1376JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1377 Patch from Andrew Lewis.
1378
fd4d8871 1379JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
dc7b3d36 1380 now supports optional time-restrictions, weighting, and priority
fd4d8871
R
1381 modifiers per server. Patch originally by <rommer@active.by>.
1382
1383JH/16 The spamd_address main option now supports a mixed list of local
2aad5761
JH
1384 and remote servers. Remote servers can be IPv6 addresses, and
1385 specify a port-range.
fd4d8871 1386
23763898
JH
1387JH/17 Bug 68: The spamd_address main option now supports an optional
1388 timeout value per server.
1389
2ad78978
JH
1390JH/18 Bug 1581: Router and transport options headers_add/remove can
1391 now have the list separator specified.
1392
8a512ed5 1393JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
cfab9d68 1394 option values.
8a512ed5 1395
82c0c8ea 1396JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
f69979cf
JH
1397 under OpenSSL.
1398
cc00f4af
JH
1399JH/21 Support for the A6 type of dns record is withdrawn.
1400
82c0c8ea
JH
1401JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1402 rather than the verbs used.
1403
b980ed83
JH
1404JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1405 from 255 to 1024 chars.
1406
6c9ed72e
JH
1407JH/24 Verification callouts now attempt to use TLS by default.
1408
cfab9d68 1409HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
99c1bb4e 1410 are generic router options now. The defaults didn't change.
50dc7409 1411
f846c8f5
JH
1412JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1413 Original patch from Alexander Shikoff, worked over by JH.
1414
fd4c285c
HSHR
1415HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1416 files if ZCAT_COMMAND is not executable.
1417
4c04137d 1418JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
fd7f7910 1419
d2a2c69b
JH
1420JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1421
8241d8dd
JH
1422JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1423 Normally benign, it bites when the pair was led to by a CNAME;
4c04137d 1424 modern usage is to not canonicalize the domain to a CNAME target
8241d8dd
JH
1425 (and we were inconsistent anyway for A-only vs AAAA+A).
1426
1f12df4d
JH
1427JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1428
1f155f8e
JH
1429JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1430 when evaluating $sender_host_dnssec.
1431
1705dd20
JH
1432JH/31 Check the HELO verification lookup for DNSSEC, adding new
1433 $sender_helo_dnssec variable.
1434
038597d2
PP
1435JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1436
474f71bf
JH
1437JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1438
7137ca4b
JH
1439JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1440
dcb1095c
JH
1441JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1442 documented as working, but never had. Support all but $spam_report.
1443
2f460950
JH
1444JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1445 added for tls authenticator.
1446
2f680c0c
HSHR
1447HS/03 Add perl_taintmode main config option
1448
9c695f6d 1449
e449c3b0
TL
1450Exim version 4.85
1451-----------------
4c57a40e 1452
e449c3b0
TL
1453TL/01 When running the test suite, the README says that variables such as
1454 no_msglog_check are global and can be placed anywhere in a specific
1455 test's script, however it was observed that placement needed to be near
1456 the beginning for it to behave that way. Changed the runtest perl
1457 script to read through the entire script once to detect and set these
1458 variables, reset to the beginning of the script, and then run through
1459 the script parsing/test process like normal.
1460
ac20058f
TL
1461TL/02 The BSD's have an arc4random API. One of the functions to induce
1462 adding randomness was arc4random_stir(), but it has been removed in
1463 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1464 function when detected.
1465
a9b8ec8b
JH
1466JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1467 cause callback expansion.
1468
6286d7c4
TL
1469TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1470 syntax errors in an expansion can be treated as a string instead of
1471 logging or causing an error, due to the internal use of bool_lax
1472 instead of bool when processing it.
1473
0f06b4f2 1474JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
d567a64d
JH
1475 server certificates when making smtp deliveries.
1476
be36e572
JH
1477JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1478
ac4ef9bd
JH
1479JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1480
0eb51736
TL
1481TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1482
c713ca4b
TL
1483TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1484 Merged patch from Sebastian Wiedenroth.
e449c3b0 1485
bd21a787
WB
1486JH/05 Fix results-pipe from transport process. Several recipients, combined
1487 with certificate use, exposed issues where response data items split
1488 over buffer boundaries were not parsed properly. This eventually
1489 resulted in duplicates being sent. This issue only became common enough
4c04137d 1490 to notice due to the introduction of connection certificate information,
bd21a787
WB
1491 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1492
8bc732e8
JH
1493JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1494 size buffer was used, resulting in syntax errors when an expansion
1495 exceeded it.
1496
a7fec7a7
JH
1497JH/07 Add support for directories of certificates when compiled with a GnuTLS
1498 version 3.3.6 or later.
1499
4c04137d 1500JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
774ef2d7
JH
1501 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1502 both become "event_action", the variables become $event_name, $event_data
aec45841 1503 and $event_defer_errno. There is a new variable $verify_mode, usable in
723fe533
JH
1504 routers, transports and related events. The tls:cert event is now also
1505 raised for inbound connections, if the main configuration event_action
1506 option is defined.
774ef2d7 1507
eca4debb
TL
1508TL/06 In test suite, disable OCSP for old versions of openssl which contained
1509 early OCSP support, but no stapling (appears to be less than 1.0.0).
1510
8d692470
JH
1511JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1512 server certificate names available under the smtp transport option
1513 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1514 matches.
1515
e9477a08
JH
1516JH/10 Time-related extraction expansions from certificates now use the main
1517 option "timezone" setting for output formatting, and are consistent
1518 between OpenSSL and GnuTLS compilations. Bug 1541.
1519
ad4c5ff9
JH
1520JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1521 encoded parameter in the incoming message. Bug 1558.
8dea5edf
JH
1522
1523JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1524 include certificate info, eximon was claiming there were spoolfile
1525 syntax errors.
1526
3394b36a 1527JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
8dea5edf
JH
1528
1529JH/14 Log delivery-related information more consistently, using the sequence
1530 "H=<name> [<ip>]" wherever possible.
1531
3394b36a
TL
1532TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1533 are problematic for Debian distribution, omit them from the release
1534 tarball.
1535
ad4c5ff9
JH
1536JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1537
4c04137d 1538JH/16 Fix string representation of time values on 64bit time_t architectures.
ad4c5ff9
JH
1539 Bug 1561.
1540
1541JH/17 Fix a null-indirection in certextract expansions when a nondefault
1542 output list separator was used.
1543
8bc732e8 1544
1f0ebb98
TL
1545Exim version 4.84
1546-----------------
09728d20
TL
1547TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1548 checkers that were complaining about end of non-void function with no
1549 return.
1f0ebb98 1550
a612424f 1551JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
4c04137d 1552 This was a regression introduced in 4.83 by another bugfix.
a612424f
JH
1553
1554JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1555
1556TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
a9b8ec8b 1557 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
a612424f 1558
1f0ebb98 1559
c0e56233
TF
1560Exim version 4.83
1561-----------------
1562
1563TF/01 Correctly close the server side of TLS when forking for delivery.
1564
1565 When a message was received over SMTP with TLS, Exim failed to clear up
1566 the incoming connection properly after forking off the child process to
1567 deliver the message. In some situations the subsequent outgoing
1568 delivery connection happened to have the same fd number as the incoming
1569 connection previously had. Exim would try to use TLS and fail, logging
1570 a "Bad file descriptor" error.
1571
7245734e
TF
1572TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1573 utilities have not been installed.
1574
fd5dad68
JH
1575JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1576 temporary space as the ACL may create new global variables.
1577
5428a946
TL
1578TL/01 LDAP support uses per connection or global context settings, depending
1579 upon the detected version of the libraries at build time.
1580
a3c86431
TL
1581TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1582 to extract and use the src ip:port in logging and expansions as if it
8ded8589
TL
1583 were a direct connection from the outside internet. PPv2 support was
1584 updated based on HAProxy spec change in May 2014.
a3c86431 1585
aa26e137
JH
1586JH/02 Add ${listextract {number}{list}{success}{fail}}.
1587
5a1b8443
WB
1588TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1589 Properly escape header and check for NULL return.
1590
72c9e342
PP
1591PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1592 not dns_use_dnssec.
1593
76f44207
WB
1594JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1595
770747fd
MFM
1596TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1597 characters in header names, implemented as a verify condition.
1598 Contributed by Michael Fischer v. Mollard.
1599
8ddef691 1600TL/05 Rename SPF condition results err_perm and err_temp to standardized
982650ec
TL
1601 results permerror and temperror. Previous values are deprecated but
1602 still accepted. In a future release, err_perm and err_temp will be
1603 completely removed, which will be a backward incompatibility if the
1604 ACL tests for either of these two old results. Patch contributed by
8ddef691 1605 user bes-internal on the mailing list.
c0e56233 1606
b9c2e32f
AR
1607JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1608
e45a1c37
JH
1609JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1610 selectors, in both main and reject logs.
1611
67d81c10
JH
1612JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1613 failed delivery.
1614
b1f8e4f8
JH
1615JH/07 Add malware type "sock" for talking to simple daemon.
1616
511a6c14 1617JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
511a6c14
JH
1618
1619JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1620 routers/transports under cutthrough routing.
214042d2 1621
51c7471d
JH
1622JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1623 numbers. Touch up "bool" conditional to keep the same definition.
1624
3695be34
TL
1625TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1626
1e06383a
TL
1627JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1628
76146973
JH
1629JH/12 Expand items in router/transport headers_add or headers_remove lists
1630 individually rather than the list as a whole. Bug 1452.
1631
1632 Required for reasonable handling of multiple headers_ options when
1633 they may be empty; requires that headers_remove items with embedded
1634 colons must have them doubled (or the list-separator changed).
1635
8c8b8274
TL
1636TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1637 view the policy declared in the DMARC record. Currently, $dmarc_status
1638 is a combined value of both the record presence and the result of the
1639 analysis.
b1f8e4f8 1640
35aba663
JH
1641JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1642
8c51eead 1643JH/14 New options dnssec_request_domains, dnssec_require_domains on the
578897ea
JH
1644 dnslookup router and the smtp transport (applying to the forward
1645 lookup).
8c51eead 1646
deae092e
HS
1647TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1648 of ldap servers used for a specific lookup. Patch provided by Heiko
1649 Schlichting.
35aba663 1650
fd3b6a4a 1651JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
4e0983dc 1652 New variable $lookup_dnssec_authenticated for observability.
fd3b6a4a 1653
8d91c6dc
LT
1654TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1655 Patch submitted by Lars Timman.
1656
2b4a568d
JH
1657JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1658
d2af03f4
HS
1659TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1660 Requires trusted mode and valid format message id, aborts otherwise.
1661 Patch contributed by Heiko Schlichting.
1662
9d1c15ef
JH
1663JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1664 certextract with support for various fields. Bug 1358.
1665
44662487
JH
1666JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1667 is requested by default, modifiable by smtp transport option
6a8a60e0
JH
1668 hosts_request_ocsp.
1669
ed3bba5f 1670JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
6a8a60e0 1671 operate on certificate variables to give certificate fingerprints
9ef9101c 1672 Also new ${sha256:cert_variable}.
44662487 1673
8ccd00b1
JH
1674JH/23 The PRDR feature is moved from being Experimental into the mainline.
1675
8ded8589
TL
1676TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1677 Christian Aistleitner.
1678
f2de3a33
JH
1679JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1680
6eb02f88
TL
1681TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1682 file. Patch from Wolfgang Breyha.
1683
00bff6f6
JH
1684JH/25 Expand the coverage of the delivery $host and $host_address to
1685 client authenticators run in verify callout. Bug 1476.
1686
071c51f7
JH
1687JH/26 Port service names are now accepted for tls_on_connect_ports, to
1688 align with daemon_smtp_ports. Bug 72.
1689
a6d4c44e
TF
1690TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1691 support and error reporting did not work properly.
1692
3ae173e7
ACK
1693TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1694 and is readable. Patch from Andrew Colin Kissa.
1695
c13d09b8
TL
1696TL/14 Enhance documentation of ${run expansion and how it parses the
1697 commandline after expansion, particularly in the case when an
1698 unquoted variable expansion results in an empty value.
1699
0df4ab80
JH
1700JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1701
66be95e0
PP
1702PP/02 Fix internal collision of T_APL on systems which support RFC3123
1703 by renaming away from it. Addresses GH issue 15, reported by
1704 Jasper Wallace.
1705
1bd0d12b
JH
1706JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1707
0de7239e
TL
1708TL/15 SECURITY: prevent double expansion in math comparison functions
1709 (can expand unsanitized data). Not remotely exploitable.
1710 CVE-2014-2972
1711
fd3b6a4a 1712
2c422e6f 1713Exim version 4.82
98a90c36
PP
1714-----------------
1715
1716PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1717
12f69989
PP
1718PP/02 Make -n do something, by making it not do something.
1719 When combined with -bP, the name of an option is not output.
1720
54c90be1
PP
1721PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1722 by GnuTLS.
1723
1f4a55da
PP
1724PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1725 $sender_host_name and config options to manage this, and basic check
1726 routines.
1727
13363eba 1728PP/05 DSCP support for outbound connections and control modifier for inbound.
36a3ae5f 1729
66645890 1730PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
e402235f
PP
1731 (Only plugin which currently uses this is kerberos4, which nobody should
1732 be using, but we should make it available and other future plugins might
1733 conceivably use it, even though it would break NAT; stuff *should* be
1734 using channel bindings instead).
66645890 1735
a3fb9793 1736PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
f4ee74ac
PP
1737 name; added for Sendmail compatibility; requires admin caller.
1738 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1739 just ignore it); requires trusted caller.
a3fb9793 1740 Also parse but ignore: -Ac -Am -X<logfile>
f4ee74ac 1741 Bugzilla 1117.
a3fb9793 1742
d27f98fe 1743TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
98a90c36 1744
6822b909
TL
1745TL/02 Add +smtp_confirmation as a default logging option.
1746
e7568d51
TL
1747TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1748 Patch by Magnus Holmgren from 2007-02-20.
1749
ae0e32ee 1750TL/04 Bugzilla 1281 - Spec typo.
ca0ff207 1751 Bugzilla 1283 - Spec typo.
97f42f10 1752 Bugzilla 1290 - Spec grammar fixes.
ca0ff207
TL
1753
1754TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
ae0e32ee 1755
e2658fff
TL
1756TL/06 Add Experimental DMARC support using libopendmarc libraries.
1757
83712b39
TL
1758TL/07 Fix an out of order global option causing a segfault. Reported to dev
1759 mailing list by by Dmitry Isaikin.
1760
976b7e9f
JH
1761JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1762
be4a1376
JH
1763JH/02 Support "G" suffix to numbers in ${if comparisons.
1764
ec4b68e5
PP
1765PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1766
d7148a07
NM
1767NM/01 Bugzilla 1197 - Spec typo
1768 Bugzilla 1196 - Spec examples corrections
ec4b68e5 1769
585121e2 1770JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
ec4b68e5 1771
2519e60d
TL
1772PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1773 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1774 function.
a5f239e4 1775
13d08c90
PP
1776PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1777 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1778
bef3ea7f
JH
1779JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1780 "acl {{name}{arg}...}", and optional args on acl condition
1781 "acl = name arg..."
a5f239e4 1782
846726c5
JH
1783JH/05 Permit multiple router/transport headers_add/remove lines.
1784
3a796370
JH
1785JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1786
ea722490 1787JH/07 Avoid using a waiting database for a single-message-only transport.
8b260705
PP
1788 Performance patch from Paul Fisher. Bugzilla 1262.
1789
b1b05573
JH
1790JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1791 Bugzilla 884.
1792
362145b5
JH
1793JH/09 Add $headers_added variable, with content from use of ACL modifier
1794 add_header (but not yet added to the message). Bugzilla 199.
1795
3c0a92dc
JH
1796JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1797 Pulled from Bugzilla 817 by Wolfgang Breyha.
1798
6d7c6175
PP
1799PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1800 CVE-2012-5671
e78e6ecf 1801 (nb: this is the same fix as in Exim 4.80.1)
6d7c6175 1802
6f123593
JH
1803JH/11 Add A= logging on delivery lines, and a client_set_id option on
1804 authenticators.
1805
c8e2fc1e
JH
1806JH/12 Add optional authenticated_sender logging to A= and a log_selector
1807 for control.
1808
005ac57f
PP
1809PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1810
3f1df0e3
PP
1811PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1812 advertise SMTP AUTH mechanism to us, instead of a generic
1813 protocol violation error. Also, make Exim more robust to bad
1814 data from the Dovecot auth socket.
1815
67bd1ab3
TF
1816TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1817
1818 When a queue runner is handling a message, Exim first routes the
1819 recipient addresses, during which it prunes them based on the retry
1820 hints database. After that it attempts to deliver the message to
1821 any remaining recipients. It then updates the hints database using
1822 the retry rules.
1823
1824 So if a recipient address works intermittently, it can get repeatedly
1825 deferred at routing time. The retry hints record remains fresh so the
1826 address never reaches the final cutoff time.
1827
1828 This is a fairly common occurrence when a user is bumping up against
1829 their storage quota. Exim had some logic in its local delivery code
1830 to deal with this. However it did not apply to per-recipient defers
1831 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1832
1ddeb334
TF
1833 This change adds a proper retry rule check during routing so that the
1834 final cutoff time is checked against the message's age. We only do
1835 this check if there is an address retry record and there is not a
1836 domain retry record; this implies that previous attempts to handle
1837 the address had the retry_use_local_parts option turned on. We use
1838 this as an approximation for the destination being like a local
1839 delivery, as in LMTP.
67bd1ab3
TF
1840
1841 I suspect this new check makes the old local delivery cutoff check
1842 redundant, but I have not verified this so I left the code in place.
1843
326cdc37
TF
1844TF/02 Correct gecos expansion when From: is a prefix of the username.
1845
1846 Test 0254 submits a message to Exim with the header
1847
1848 Resent-From: f
1849
1850 When I ran the test suite under the user fanf2, Exim expanded
1851 the header to contain my full name, whereas it should have added
1852 a Resent-Sender: header. It erroneously treats any prefix of the
1853 username as equal to the username.
1854
1855 This change corrects that bug.
1856
f62514b3
GF
1857GF/01 DCC debug and logging tidyup
1858 Error conditions log to paniclog rather than rejectlog.
1859 Debug lines prefixed by "DCC: " to remove any ambiguity.
1860
eb505532
TF
1861TF/03 Avoid unnecessary rebuilds of lookup-related code.
1862
14c7b357
PP
1863PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1864 Bug spotted by Jeremy Harris; was flawed since initial commit.
1865 Would have resulted in OCSP responses post-SNI triggering an Exim
1866 NULL dereference and crash.
1867
94eaf700
PP
1868JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1869
6f5a440a
PP
1870PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1871 Bug detection, analysis and fix by Samuel Thibault.
1872 Bugzilla 1331, Debian bug #698092.
1873
514ee161
SC
1874SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1875
fd98a5c6
JH
1876JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1877 Server implementation by Todd Lyons, client by JH.
1878 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1879 config variable "prdr_enable" controls whether the server
1880 advertises the facility. If the client requests PRDR a new
1881 acl_data_smtp_prdr ACL is called once for each recipient, after
1882 the body content is received and before the acl_smtp_data ACL.
4c04137d 1883 The client is controlled by both of: a hosts_try_prdr option
fd98a5c6
JH
1884 on the smtp transport, and the server advertisement.
1885 Default client logging of deliveries and rejections involving
1886 PRDR are flagged with the string "PRDR".
1887
035c7f1e
PP
1888PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1889 fclose(). Diagnosis by Todd Lyons.
1890
ff284120
PP
1891PP/17 Update configure.default to handle IPv6 localhost better.
1892 Patch by Alain Williams (plus minor tweaks).
1893 Bugzilla 880.
1894
26e72755
PP
1895PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1896 This is now consistent with GnuTLS, and is now documented: the
1897 previous undocumented portable approach to treating the option as
1898 unset was to force an expansion failure. That still works, and
1899 an empty string is now equivalent.
1900
0fbd9bff
PP
1901PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1902 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1903 not performing validation itself.
1904
700d22f3
PP
1905PP/20 Added force_command boolean option to pipe transport.
1906 Patch from Nick Koston, of cPanel Inc.
1907
fcc8e047
JH
1908JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1909 Bugzilla 321, 823.
1910
4c04137d 1911TF/04 Added udpsend ACL modifier and hexquote expansion operator
7142daca 1912
8c020188
PP
1913PP/21 Fix eximon continuous updating with timestamped log-files.
1914 Broken in a format-string cleanup in 4.80, missed when I repaired the
1915 other false fix of the same issue.
1916 Report and fix from Heiko Schlichting.
1917 Bugzilla 1363.
1918
d13cdd30
PP
1919PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1920 Report from Prashanth Katuri.
1921
e2fbf4a2
PP
1922PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1923 It's SecureTransport, so affects any MacOS clients which use the
1924 system-integrated TLS libraries, including email clients.
1925
f4c1088b
PP
1926PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1927 using a MIME ACL for non-SMTP local injection.
1928 Report and assistance in diagnosis by Warren Baker.
1929
c5c2182f
PP
1930TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1931
73431ca9
JH
1932JH/16 Fix comparisons for 64b. Bugzilla 1385.
1933
2d07a215
TL
1934TL/09 Add expansion variable $authenticated_fail_id to keep track of
1935 last id that failed so it may be referenced in subsequent ACL's.
1936
a30a8861
TL
1937TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1938 Alexander Miroch.
1939
33382dd9
TL
1940TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1941 ldap library initialization, allowing self-signed CA's to be
1942 used. Also properly sets require_cert option later in code by
1943 using NULL (global ldap config) instead of ldap handle (per
1944 session). Bug diagnosis and testing by alxgomz.
6d7c6175 1945
046172e6
TL
1946TL/12 Enhanced documentation in the ratelimit.pl script provided in
1947 the src/util/ subdirectory.
1948
581d7bee 1949TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1a7b746d 1950 renamed to Transport Post Delivery Action by Jeremy Harris, as
9bdd29ad
TL
1951 EXPERIMENTAL_TPDA.
1952
1953TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1954 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1955 redis_servers = needs to be configured which will be used by the redis
1956 lookup. Patch from Warren Baker, of The Packet Hub.
1957
237b2cf2
TL
1958TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1959
9fc5a352
TL
1960TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1961 hostname or reverse DNS when processing a host list. Used suggestions
1962 from multiple comments on this bug.
1a7b746d 1963
b10e4ec2
TL
1964TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1965
e2cebd74
TL
1966TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1967 Missed a few lines, added it to make the runtest require no keyboard
1968 interaction.
1969
1970TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1971 contains upper case chars. Make router use caseful_local_part.
1972
2519e60d
TL
1973TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1974 support when GnuTLS has been built with p11-kit.
1975
e78e6ecf 1976
4263f395
PP
1977Exim version 4.80.1
1978-------------------
1979
1980PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1981 CVE-2012-5671
2c422e6f 1982 This, or similar/improved, will also be change PP/11 of 4.82.
3c0a92dc 1983
ea722490 1984
b1770b6e 1985Exim version 4.80
0599f9cf
PP
1986-----------------
1987
1988PP/01 Handle short writes when writing local log-files.
1989 In practice, only affects FreeBSD (8 onwards).
1990 Bugzilla 1053, with thanks to Dmitry Isaikin.
1991
23c7e742
NM
1992NM/01 Bugzilla 949 - Documentation tweak
1993
b322aac8
NM
1994NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1995 improved.
1996
4a891427
NM
1997NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1998
c1e794ba 1999PP/02 Implemented gsasl authenticator.
b322aac8 2000
97753960
PP
2001PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
2002
2003PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
2004 `pkg-config foo` for cflags/libs.
2005
df6303fa
PP
2006PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
2007 with rest of GSASL and with heimdal_gssapi.
2008
7e6a8985
PP
2009PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
2010 `pkg-config foo` for cflags/libs for the TLS implementation.
2011
f1e05cc7 2012PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
20aa9dbd
PP
2013 properties get this fed in as external SSF. A number of robustness
2014 and debugging improvements to the cyrus_sasl authenticator.
b322aac8 2015
4c287009
PP
2016PP/08 cyrus_sasl server now expands the server_realm option.
2017
b98bb9ac
PP
2018PP/09 Bugzilla 1214 - Log authentication information in reject log.
2019 Patch by Jeremy Harris.
2020
4a6a987a
PP
2021PP/10 Added dbmjz lookup type.
2022
c45dd180 2023PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
c7955b11 2024
7db8d074
PP
2025PP/12 MAIL args handles TAB as well as SP, for better interop with
2026 non-compliant senders.
2027 Analysis and variant patch by Todd Lyons.
2028
eae0036b 2029NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
cfab9d68 2030 Bug report from Lars Müller <lars@samba.org> (via SUSE),
e0df1c83
DM
2031 Patch from Dirk Mueller <dmueller@suse.com>
2032
dec5017e
PP
2033PP/13 tls_peerdn now print-escaped for spool files.
2034 Observed some $tls_peerdn in wild which contained \n, which resulted
2035 in spool file corruption.
2036
c80c5570
PP
2037PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
2038 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
2039 or write after TLS renegotiation, which otherwise led to messages
2040 "Got SSL error 2".
2041
076b11e2
PP
2042TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
2043 as a tracking header (ie: a signed header comes before the signature).
2044 Patch from Wolfgang Breyha.
2045
5407bfff
JH
2046JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
2047 comma-sep list; embedded commas doubled.
2048
9e45c72b
PP
2049JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
2050
e74376d8
PP
2051PP/15 LDAP: Check for errors of TLS initialisation, to give correct
2052 diagnostics.
2053 Report and patch from Dmitry Banschikov.
2054
4c04137d 2055PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
da3ad30d
PP
2056 Removed SSL_clear() after SSL_new() which led to protocol negotiation
2057 failures. We appear to now support TLS1.1+ with Exim.
2058
7be682ca
PP
2059PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
2060 lets Exim select keys and certificates based upon TLS SNI from client.
3f0945ff
PP
2061 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
2062 before an outbound SMTP session. New log_selector, +tls_sni.
7be682ca 2063
ef840681
PP
2064PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
2065 NULL dereference. Report and patch from Alun Jones.
2066
5bfb4cdf
PP
2067PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
2068 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
2069 Not seeing resolver debug output on NetBSD, but suspect this is a
2070 resolver implementation change.
2071
c6e95d22
PP
2072PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
2073 Left warnings. Added "eximon gdb" invocation mode.
2074
9cbad13b
PP
2075PP/21 Defaulting "accept_8bitmime" to true, not false.
2076
9ee44efb
PP
2077PP/22 Added -bw for inetd wait mode support.
2078
6a6084f8
PP
2079PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
2080 locate the relevant includes and libraries. Made this the default.
2081
12dd53c7
PP
2082PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
2083 Bugzilla 1246, report and most of solution from Tomasz Kusy.
2084
9e45c72b 2085JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
97d17305
JH
2086 This may cause build issues on older platforms.
2087
17c76198
PP
2088PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
2089 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
2090 gnutls_require_mac & gnutls_require_protocols (no longer supported).
2091 Added SNI support via GnuTLS too.
af3498d6 2092 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
17c76198 2093
53947857 2094PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
3f7eeb86 2095
eae0036b 2096PP/27 Applied dnsdb SPF support patch from Janne Snabb.
8ee4b30e
PP
2097 Applied second patch from Janne, implementing suggestion to default
2098 multiple-strings-in-record handling to match SPF spec.
eae0036b 2099
9e45c72b 2100JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
2605c55b 2101
7390e768
PP
2102PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
2103 read-only, out of scope).
2104 Patch from Wolfgang Breyha, report from Stuart Northfield.
2105
08488c86
PP
2106PP/29 Fix three issues highlighted by clang analyser static analysis.
2107 Only crash-plausible issue would require the Cambridge-specific
2108 iplookup router and a misconfiguration.
2109 Report from Marcin Mirosław.
2110
6475bd82
PP
2111PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
2112
81f91683
PP
2113PP/31 %D in printf continues to cause issues (-Wformat=security), so for
2114 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
2115 As part of this, removing so much warning spew let me fix some minor
2116 real issues in debug logging.
2117
5779e6aa
PP
2118PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
2119 assignment on my part. Fixed.
2120
3375e053
PP
2121PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
2122 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
2123 Janne Snabb (who went above and beyond: thank you).
2124
2125PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
2126 string otherwise requires a connection and a bunch more work and it's
78e0c7a3
PP
2127 relatively easy to get wrong. Should also expose TLS library linkage
2128 problems.
3375e053 2129
9d26b8c0
PP
2130PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
2131 64-bit ${eval} (JH/03).
2132
57eb9e91 2133PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
b87a6e0e
PP
2134 GNU libc to support some of the 64-bit stuff, should not lead to
2135 conflicts. Defined before os.h is pulled in, so if a given platform
2136 needs to override this, it can.
2137
16880d1a
PP
2138PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
2139 protection layer was required, which is not implemented.
2140 Bugzilla 1254, patch from Wolfgang Breyha.
2141
a799883d
PP
2142PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
2143 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
2144 tls_dhparam take prime identifiers. Also unbreak combination of
2145 OpenSSL+DH_params+TLSSNI.
2146
3ecab157 2147PP/39 Disable SSLv2 by default in OpenSSL support.
f0f5a555 2148
0599f9cf 2149
867fcbf5
PP
2150Exim version 4.77
2151-----------------
2152
2153PP/01 Solaris build fix for Oracle's LDAP libraries.
2154 Bugzilla 1109, patch from Stephen Usher.
2155
f1a29782
TF
2156TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
2157
ab42bd23
TK
2158TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
2159 whitespace trailer
867fcbf5 2160
0ca0cf52
TF
2161TF/02 Fix a couple more cases where we did not log the error message
2162 when unlink() failed. See also change 4.74-TF/03.
2163
921b12ca
TF
2164TF/03 Make the exiwhat support code safe for signals. Previously Exim might
2165 lock up or crash if it happened to be inside a call to libc when it
2166 got a SIGUSR1 from exiwhat.
2167
2168 The SIGUSR1 handler appends the current process status to the process
2169 log which is later printed by exiwhat. It used to use the general
2170 purpose logging code to do this, but several functions it calls are
2171 not safe for signals.
2172
2173 The new output code in the SIGUSR1 handler is specific to the process
2174 log, and simple enough that it's easy to inspect for signal safety.
2175 Removing some special cases also simplifies the general logging code.
2176 Removing the spurious timestamps from the process log simplifies
2177 exiwhat.
2178
c99ce5c9
TF
2179TF/04 Improved ratelimit ACL condition.
2180
2181 The /noupdate option has been deprecated in favour of /readonly which
2182 has clearer semantics. The /leaky, /strict, and /readonly update modes
2183 are mutually exclusive. The update mode is no longer included in the
2184 database key; it just determines when the database is updated. (This
4c04137d 2185 means that when you upgrade Exim will forget old rate measurements.)
c99ce5c9
TF
2186
2187 Exim now checks that the per_* options are used with an update mode that
2188 makes sense for the current ACL. For example, when Exim is processing a
2189 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
2190 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
2191 must specify per_mail/readonly. If you omit the update mode it defaults to
2192 /leaky where that makes sense (as before) or /readonly where required.
2193
2194 The /noupdate option is now undocumented but still supported for
2195 backwards compatibility. It is equivalent to /readonly except that in
2196 ACLs where /readonly is required you may specify /leaky/noupdate or
2197 /strict/noupdate which are treated the same as /readonly.
2198
2199 A useful new feature is the /count= option. This is a generalization
2200 of the per_byte option, so that you can measure the throughput of other
2201 aggregate values. For example, the per_byte option is now equivalent
2202 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
2203
2204 The per_rcpt option has been generalized using the /count= mechanism
2205 (though it's more complicated than the per_byte equivalence). When it is
2206 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
2207 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
2208 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
2209 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
2210 Note that using per_rcpt with a non-readonly update mode in more than
2211 one ACL will cause the recipients to be double-counted. (The per_mail
2212 and per_byte options don't have this problem.)
2213
2214 The handling of very low rates has changed slightly. If the computed rate
2215 is less than the event's count (usually one) then this event is the first
2216 after a long gap. In this case the rate is set to the same as this event's
2217 count, so that the first message of a spam run is counted properly.
2218
2219 The major new feature is a mechanism for counting the rate of unique
2220 events. The new per_addr option counts the number of different
2221 recipients that someone has sent messages to in the last time period. It
2222 behaves like per_rcpt if all the recipient addresses are different, but
2223 duplicate recipient addresses do not increase the measured rate. Like
2224 the /count= option this is a general mechanism, so the per_addr option
2225 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
2226 example, measure the rate that a client uses different sender addresses
2227 with the options per_mail/unique=$sender_address. There are further
2228 details in the main documentation.
2229
3634fc25
TF
2230TF/05 Removed obsolete $Cambridge$ CVS revision strings.
2231
792e8a19
TF
2232TF/06 Removed a few PCRE remnants.
2233
5901f0ab
TF
2234TF/07 Automatically extract Exim's version number from tags in the git
2235 repository when doing development or release builds.
2236
7f2a2a43
PP
2237PP/02 Raise smtp_cmd_buffer_size to 16kB.
2238 Bugzilla 879. Patch from Paul Fisher.
e2ca7082 2239
061b7ebd
PP
2240PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
2241 Heavily based on revision 40f9a89a from Simon Arlott's tree.
2242 Bugzilla 97.
2243
e12f8c32
PP
2244PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
2245
9e949f00 2246PP/05 Variable $av_failed, true if the AV scanner deferred.
7f2a2a43
PP
2247 Bugzilla 1078. Patch from John Horne.
2248
2249PP/06 Stop make process more reliably on build failure.
2250 Bugzilla 1087. Patch from Heiko Schlittermann.
9e949f00 2251
555ae6af 2252PP/07 Make maildir_use_size_file an _expandable_ boolean.
ac53fcda
PP
2253 Bugzilla 1089. Patch from Heiko Schlittermann.
2254
2255PP/08 Handle ${run} returning more data than OS pipe buffer size.
2256 Bugzilla 1131. Patch from Holger Weiß.
555ae6af 2257
6f7fe114
PP
2258PP/09 Handle IPv6 addresses with SPF.
2259 Bugzilla 860. Patch from Wolfgang Breyha.
2260
c566dd90
PP
2261PP/10 GnuTLS: support TLS 1.2 & 1.1.
2262 Bugzilla 1156.
89f897c3
PP
2263 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
2264 Bugzilla 1095.
c566dd90 2265
d6cc7c78 2266PP/11 match_* no longer expand right-hand-side by default.
39257585
PP
2267 New compile-time build option, EXPAND_LISTMATCH_RHS.
2268 New expansion conditions, "inlist", "inlisti".
2269
0d0e4455
PP
2270PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
2271
3399bb60 2272PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
d690cbdc
PP
2273
2274PP/14 fix log_write() format string regression from TF/03.
2275 Bugzilla 1152. Patch from Dmitry Isaikin.
2276
0ca0cf52 2277
10906672
PP
2278Exim version 4.76
2279-----------------
2280
2281PP/01 The new ldap_require_cert option would segfault if used. Fixed.
2282
754a0503
PP
2283PP/02 Harmonised TLS library version reporting; only show if debugging.
2284 Layout now matches that introduced for other libraries in 4.74 PP/03.
2285
c0c7b2da
PP
2286PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
2287
e97d1f08
PP
2288PP/04 New "dns_use_edns0" global option.
2289
084c1d8c
PP
2290PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2291 Bugzilla 1098.
2292
4e7ee012
PP
2293PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2294 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
da80c2a8 2295
c8d52a00
PP
2296TK/01 Updated PolarSSL code to 0.14.2.
2297 Bugzilla 1097. Patch from Andreas Metzler.
2298
54e7ce4a
PP
2299PP/07 Catch divide-by-zero in ${eval:...}.
2300 Fixes bugzilla 1102.
2301
5ee6f336
PP
2302PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2303 Bugzilla 1104.
2304
c8d52a00 2305TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
6ea4a851
PP
2306 format-string attack -- SECURITY: remote arbitrary code execution.
2307
2308TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2309 time unintentionally subject to list matching rules, letting the header
2310 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2311 arbitrary string expansion). This allowed for information disclosure.
2312
2313PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2314 INT_MIN/-1 -- value coerced to INT_MAX.
c8d52a00 2315
10906672 2316
aa097c4c
NM
2317Exim version 4.75
2318-----------------
2319
4c04137d 2320NM/01 Workaround for PCRE version dependency in version reporting
aa097c4c
NM
2321 Bugzilla 1073
2322
7f3d9eff
TF
2323TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2324 This fixes portability to compilers other than gcc, notably
2325 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2326
159f52d2
TF
2327TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2328 makefiles for portability to HP-UX and POSIX correctness.
2329
0cc9542a
PP
2330PP/01 Permit LOOKUP_foo enabling on the make command-line.
2331 Also via indented variable definition in the Makefile.
2332 (Debugging by Oliver Heesakkers).
2333
f7274286
PP
2334PP/02 Restore caching of spamd results with expanded spamd_address.
2335 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2336
7b797365
PP
2337PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2338 Improves build reliability. Fix from: Frank Elsner
2339
caacae52
NM
2340NM/02 Fix wide character breakage in the rfc2047 coding
2341 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2342
09dcaba9
NM
2343NM/03 Allow underscore in dnslist lookups
2344 Fixes bug 1026. Patch from Graeme Fowler
2345
bc19a55b
PP
2346PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2347 Code patches from Adam Ciarcinski of NetBSD.
caacae52 2348
bd4c9759
NM
2349NM/04 Fixed exiqgrep to cope with mailq missing size issue
2350 Fixes bug 943.
2351
b72aab72
PP
2352PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2353 is logged, to avoid truncation. Patch from John Horne.
2354
2fe76745
PP
2355PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2356 Patch from Jakob Hirsch.
2357
76aa570c
PP
2358PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2359 SQL string expansion failure details.
2360 Patch from Andrey Oktyabrski.
2361
f1e5fef5
PP
2362PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2363 Patch from Simon Arlott.
2364
4d805ee9
PP
2365PP/09 New lookups functionality failed to compile on old gcc which rejects
2366 extern declarations in function scope.
2367 Patch from Oliver Fleischmann
2368
cd59ab18
PP
2369PP/10 Use sig_atomic_t for flags set from signal handlers.
2370 Check getgroups() return and improve debugging.
2371 Fixed developed for diagnosis in bug 927 (which turned out to be
2372 a kernel bug).
2373
332f5cf3
PP
2374PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2375 Patch from Mark Zealey.
2376
29cfeb94
PP
2377PP/12 Bugzilla 1056: Improved spamd server selection.
2378 Patch from Mark Zealey.
2379
660242ad
PP
2380PP/13 Bugzilla 1086: Deal with maildir quota file races.
2381 Based on patch from Heiko Schlittermann.
2382
bc4bc4c5
PP
2383PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2384 Patch from Uwe Doering, sign-off by Michael Haardt.
2385
2e64baa9
NM
2386NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2387 variable declaration deep within a block. Bug and patch from
2388 Dennis Davis.
2389
4c04137d 2390PP/15 lookups-Makefile IRIX compatibility coercion.
bddd7526 2391
6bac1a9a
PP
2392PP/16 Make DISABLE_DKIM build knob functional.
2393
552193f0
NM
2394NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2395 Patch by Simon Arlott
baeee2c1 2396
1b587e48
TF
2397TF/03 Fix valgrind.h portability to C89 compilers that do not support
2398 variable argument macros. Our copy now differs from upstream.
2399
aa097c4c 2400
8c07b69f
TF
2401Exim version 4.74
2402-----------------
2403
2404TF/01 Failure to get a lock on a hints database can have serious
2405 consequences so log it to the panic log.
2406
c0ea85ab
TF
2407TF/02 Log LMTP confirmation messages in the same way as SMTP,
2408 controlled using the smtp_confirmation log selector.
2409
0761d44e
TF
2410TF/03 Include the error message when we fail to unlink a spool file.
2411
0a349494
PP
2412DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2413 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2414 for maintaining out-of-tree patches for some time.
2415
2416PP/01 Bugzilla 139: Documentation and portability issues.
2417 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2418 Handle per-OS dynamic-module compilation flags.
2419
fea24b2e
PP
2420PP/02 Let /dev/null have normal permissions.
2421 The 4.73 fixes were a little too stringent and complained about the
2422 permissions on /dev/null. Exempt it from some checks.
2423 Reported by Andreas M. Kirchwitz.
2424
6545de78
PP
2425PP/03 Report version information for many libraries, including
2426 Exim version information for dynamically loaded libraries. Created
2427 version.h, now support a version extension string for distributors
2428 who patch heavily. Dynamic module ABI change.
2429
1670ef10
PP
2430PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2431 privilege escalation vulnerability whereby the Exim run-time user
2432 can cause root to append content of the attacker's choosing to
2433 arbitrary files.
2434
c0886197
PP
2435PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2436 (Wolfgang Breyha)
2437
b7487bce
PP
2438PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2439 If dropping privileges for untrusted macros, we disabled normal logging
2440 on the basis that it would fail; for the Exim run-time user, this is not
2441 the case, and it resulted in successful deliveries going unlogged.
2442 Fixed. Reported by Andreas Metzler.
2443
8c07b69f 2444
97fd1e48 2445Exim version 4.73
ed7f7860 2446-----------------
97fd1e48
PP
2447
2448PP/01 Date: & Message-Id: revert to normally being appended to a message,
2449 only prepend for the Resent-* case. Fixes regression introduced in
2450 Exim 4.70 by NM/22 for Bugzilla 607.
2451
6901c596
PP
2452PP/02 Include check_rfc2047_length in configure.default because we're seeing
2453 increasing numbers of administrators be bitten by this.
2454
a8c8d6b5
JJ
2455JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2456
77bb000f
PP
2457PP/03 Bugzilla 994: added openssl_options main configuration option.
2458
a29e5231
PP
2459PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2460
ec5a0394 2461PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
a29e5231 2462
55c75993
PP
2463PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2464
453a6645 2465PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
ec5a0394
PP
2466 without a peer certificate, leading to a segfault because of an
2467 assumption that peers always have certificates. Be a little more
453a6645
PP
2468 paranoid. Problem reported by Martin Tscholak.
2469
8544e77a
PP
2470PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2471 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2472 NB: ClamAV planning to remove STREAM in "middle of 2010".
3346ab01
PP
2473 CL also introduces -bmalware, various -d+acl logging additions and
2474 more caution in buffer sizes.
8544e77a 2475
83e029d5
PP
2476PP/09 Implemented reverse_ip expansion operator.
2477
ed7f7860
PP
2478PP/10 Bugzilla 937: provide a "debug" ACL control.
2479
7d9f747b
PP
2480PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2481
4b2241d2
PP
2482PP/12 Bugzilla 973: Implement --version.
2483
10385c15
PP
2484PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2485
dbc4b90d
PP
2486PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2487
532be449
PP
2488PP/15 Bugzilla 816: support multiple condition rules on Routers.
2489
6a8de854 2490PP/16 Add bool_lax{} expansion operator and use that for combining multiple
71265ae9
PP
2491 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2492 ignore trailing whitespace.
6a8de854 2493
5dc43717
JJ
2494JJ/02 prevent non-panic DKIM error from being sent to paniclog
2495
2496JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2497 "exim" to be used
55c75993 2498
3346ab01
PP
2499PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2500 Notification from Dr Andrew Aitchison.
2501
491fab4c
PP
2502PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2503 ExtendedDetectionInfo response format.
2504 Notification from John Horne.
2505
13eb9497
PP
2506PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2507 compatible.
2508
2509PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2510 XSL and documented dependency on system catalogs, with examples of how
2511 it normally works.
2512
7f36d675
DW
2513DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2514 access.
2515
c1d94452
DW
2516DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2517 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2518 configuration file which is writeable by the Exim user or group.
2519
e2f5dc15
DW
2520DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2521 of configuration files to cover files specified with the -C option if
2522 they are going to be used with root privileges, not just the default
2523 configuration file.
2524
cd25e41d
DW
2525DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2526 option (effectively making it always true).
2527
261dc43e
DW
2528DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2529 files to be used while preserving root privileges.
2530
fa32850b
DW
2531DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2532 that rogue child processes cannot use them.
2533
79d4bc3d
PP
2534PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2535 run-time user, instead of root.
2536
43236f35 2537PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2cfd3221
PP
2538 Exim run-time user without dropping privileges.
2539
fb08281f
DW
2540DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2541 result string, instead of calling string_vformat() twice with the same
2542 arguments.
3346ab01 2543
74935b98
DW
2544DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2545 for other users. Others should always drop root privileges if they use
2546 -C on the command line, even for a whitelisted configure file.
2547
90b6341f
DW
2548DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2549
57730b52
ML
2550NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2551
66581d1e 2552
465e92cf
JJ
2553Exim version 4.72
2554-----------------
2555
453a6645
PP
2556JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2557 $data_path, and $header_path variables; fixed documentation bugs and
2558 typos
465e92cf 2559
453a6645
PP
2560JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2561 exipick to access non-standard spools, including the "frozen" queue
2562 (Finput)
edae0343 2563
9bd3e22c
NM
2564NM/01 Bugzilla 965: Support mysql stored procedures.
2565 Patch from Alain Williams
2566
bb576ff7
NM
2567NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2568
5a1a5845
NM
2569NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2570 Patch from Andreas Metzler
2571
981a9fad
NM
2572NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2573 Patch from Kirill Miazine
2574
7fc497ee
NM
2575NM/05 Bugzilla 671: Added umask to procmail example.
2576
1a41defa
JJ
2577JJ/03 installed exipick 20100323.0, fixing doc bug
2578
a466095c 2579NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
b26eacf1 2580 directory. Notification and patch from Dan Rosenberg.
a466095c 2581
94a6bd0b
NM
2582TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2583
2584TK/02 Improve log output when DKIM signing operation fails.
2585
2586MH/01 Treat the transport option dkim_domain as a colon separated
2587 list, not as a single string, and sign the message with each element,
2588 omitting multiple occurences of the same signer.
2589
c1b141a8
NM
2590NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2591 Bugzilla 985, 986. Patch by Simon Arlott
94a6bd0b 2592
b26eacf1 2593NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
0d0c6357
NM
2594 Patch by Simon Arlott
2595
179c5980 2596PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
b26eacf1 2597 MBX locking. Notification from Dan Rosenberg.
179c5980 2598
9bd3e22c 2599
7c6d71af
NM
2600Exim version 4.71
2601-----------------
2602
7d9f747b 2603TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
7c6d71af 2604
f013fb92
NM
2605NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2606
0eb8eedd
NM
2607NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2608
663ee6d9
NM
2609NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2610
177ebd9b
NM
2611NM/04 Bugzilla 915: Flag broken perl installation during build.
2612
7c6d71af 2613
210f147e
NM
2614Exim version 4.70
2615-----------------
2616
cdd3bb85 2617TK/01 Added patch by Johannes Berg that expands the main option
e739e3d9 2618 "spamd_address" if it starts with a dollar sign.
cdd3bb85
TK
2619
2620TK/02 Write list of recipients to X-Envelope-Sender header when building
2621 the mbox-format spool file for content scanning (suggested by Jakob
7d9f747b 2622 Hirsch).
cdd3bb85
TK
2623
2624TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2625 (http://www.dcc-servers.net/) support via dccifd. Activated by
e739e3d9 2626 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
cdd3bb85
TK
2627
2628TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2629 by Mark Daniel Reidel <mr@df.eu>.
2630
210f147e
NM
2631NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2632 When building exim an external PCRE library is now needed -
2633 PCRE is a system library on the majority of modern systems.
2634 See entry on PCRE_LIBS in EDITME file.
2635
deafd5b3
NM
2636NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2637 conversation. Added nologin parameter to request.
7d9f747b 2638 Patch contributed by Kirill Miazine.
deafd5b3 2639
089793a4
TF
2640TF/01 Do not log submission mode rewrites if they do not change the address.
2641
5f16ca82
TF
2642TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2643
dae9d94e 2644NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
7d9f747b 2645 log files in place. Contributed by Roberto Lima.
dae9d94e 2646
7d9f747b 2647NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
3f0da4d0 2648
06864c44
TF
2649TF/03 Bugzilla 615: When checking the local_parts router precondition
2650 after a local_part_suffix or local_part_prefix option, Exim now
2651 does not use the address's named list lookup cache, since this
2652 contains cached lookups for the whole local part.
2653
65a7d8c3 2654NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
7d9f747b 2655 Robert Millan. Documentation is in experimental-spec.txt.
65a7d8c3 2656
23510047 2657TF/04 Bugzilla 668: Fix parallel build (make -j).
65a7d8c3 2658
7d9f747b 2659NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
5f28a6e8 2660
7d8eec3a 2661NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
7d9f747b 2662 Patch provided by Jan Srzednicki.
6c588e74 2663
89dec7b6
TF
2664TF/05 Leading white space used to be stripped from $spam_report which
2665 wrecked the formatting. Now it is preserved.
5f28a6e8 2666
a99de90c
TF
2667TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2668 that they are available at delivery time.
2669
e2803e40
TF
2670TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2671
7199e1ee
TF
2672TF/08 TLS error reporting now respects the incoming_interface and
2673 incoming_port log selectors.
2674
e276e04b
TF
2675TF/09 Produce a more useful error message if an SMTP transport's hosts
2676 setting expands to an empty string.
2677
ce552449 2678NM/06 Bugzilla 744: EXPN did not work under TLS.
7d9f747b 2679 Patch provided by Phil Pennock.
ce552449 2680
e765a0f1 2681NM/07 Bugzilla 769: Extraneous comma in usage fprintf
7d9f747b 2682 Patch provided by Richard Godbee.
e765a0f1 2683
4f054c63 2684NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
447de4b0 2685 acl_smtp_notquit, added index entry.
4f054c63 2686
7d9f747b
PP
2687NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2688 Patch provided by Eugene Bujak.
24c929a2 2689
7d9f747b
PP
2690NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2691 accept(). Patch provided by Maxim Dounin.
cf73943b 2692
b52bc06e 2693NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
7d9f747b 2694 Patch provided by Phil Pennock.
b52bc06e 2695
447de4b0
NM
2696NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2697
4c69d561 2698NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
7d9f747b 2699 Patch provided by Brad "anomie" Jorsch.
4c69d561 2700
d5c39246 2701NM/14 Bugzilla 622: Added timeout setting to transport filter.
7d9f747b 2702 Patch provided by Dean Brooks.
9b989985 2703
0b23848a
TK
2704TK/05 Add native DKIM support (does not depend on external libraries).
2705
8f3414a1 2706NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
7d9f747b 2707 Patch provided by Graeme Fowler.
e2aacdfd 2708
fb6f955d
NM
2709NM/16 Bugzilla 851: Documentation example syntax fix.
2710
2711NM/17 Changed NOTICE file to remove references to embedded PCRE.
8f3414a1 2712
7d9f747b
PP
2713NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2714 lsearch.
dbb0bf41 2715
7d9f747b
PP
2716NM/19 Bugzilla 745: TLS version reporting.
2717 Patch provided by Phil Pennock.
f3766eb5 2718
7d9f747b
PP
2719NM/20 Bugzilla 167: bool: condition support.
2720 Patch provided by Phil Pennock.
36f12725 2721
7d9f747b
PP
2722NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2723 clients. Patch provided by Phil Pennock.
e6060e2c 2724
7d9f747b
PP
2725NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2726 Patch provided by Brad "anomie" Jorsch.
5eb690a1 2727
7d9f747b
PP
2728NM/23 Bugzilla 687: Fix misparses in eximstats.
2729 Patch provided by Heiko Schlittermann.
d5c13d66 2730
7d9f747b
PP
2731NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2732 Patch provided by Heiko Schlittermann.
b2335c0b 2733
7d9f747b 2734NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1da77999 2735 plus update to original patch.
f4cd9433 2736
7d9f747b 2737NM/26 Bugzilla 799: Documentation correction for ratelimit.
dc988b7e 2738
7d9f747b
PP
2739NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2740 Patch provided by David Brownlee.
8dc71ab3 2741
7d9f747b 2742NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
400eda43 2743
7d9f747b 2744NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
ec5a421b 2745
7d9f747b 2746NM/30 Bugzilla 888: TLS documentation bugfixes.
07af267e 2747
7d9f747b 2748NM/31 Bugzilla 896: Dovecot buffer overrun fix.
51473862 2749
17792b53 2750NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
7d9f747b 2751 Unlike the original bugzilla I have changed all shell scripts in src tree.
17792b53 2752
7d9f747b
PP
2753NM/33 Bugzilla 898: Transport filter timeout fix.
2754 Patch by Todd Rinaldo.
52383f8f 2755
91576cec 2756NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
7d9f747b 2757 Patch by Serge Demonchaux.
5ca6d115 2758
7d9f747b
PP
2759NM/35 Bugzilla 39: Base64 decode bug fixes.
2760 Patch by Jakob Hirsch.
baee9eee 2761
7d9f747b 2762NM/36 Bugzilla 909: Correct connect() call in dcc code.
e93a964c 2763
7d9f747b 2764NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
9bf3d68f 2765
7d9f747b 2766NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
96535b98 2767
7d9f747b 2768NM/39 Bugzilla 911: Fixed MakeLinks build script.
30339e0f 2769
deafd5b3 2770
47db1125
NM
2771Exim version 4.69
2772-----------------
2773
4b3504d0
TK
2774TK/01 Add preliminary DKIM support. Currently requires a forked version of
2775 ALT-N's libdkim that I have put here:
2776 http://duncanthrax.net/exim-experimental/
2777
2778 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2779 were called 'true' and it seems that C99 defines that as a reserved
2780 keyword to be used with 'bool' variable types. That means you could
2781 not include C99-style headers which use bools without triggering
2782 build errors in sieve.c.
2783
81ea09ca
NM
2784NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2785 as mailq or other aliases. Changed the --help handling significantly
2786 to do whats expected. exim_usage() emits usage/help information.
2787
f13cddcb
SC
2788SC/01 Added the -bylocaldomain option to eximstats.
2789
7d9f747b 2790NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
8ad076b2 2791
7d9f747b 2792NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
a843aaa6 2793
7d9f747b 2794NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
47db1125
NM
2795
2796
eb4c0de6
PH
2797Exim version 4.68
2798-----------------
2799
2800PH/01 Another patch from the Sieve maintainer.
2801
6a3bceb1
PH
2802PH/02 When an IPv6 address is converted to a string for single-key lookup
2803 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2804 dots are used instead of colons so that keys in lsearch files need not
2805 contain colons. This was done some time before quoting was made available
2806 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2807 (notated using the quote facility) so as to distinguish them from IPv4
2808 keys. This meant that lookups for IP addresses in host lists did not work
2809 for iplsearch lookups.
2810
2811 This has been fixed by arranging for IPv6 addresses to be expressed with
2812 colons if the lookup type is iplsearch. This is not incompatible, because
2813 previously such lookups could never work.
2814
4c04137d 2815 The situation is now rather anomalous, since one *can* have colons in
6a3bceb1
PH
2816 ordinary lsearch keys. However, making the change in all cases is
2817 incompatible and would probably break a number of configurations.
2818
2e30fa9d
TK
2819TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2820 version.
2821
0806a9c5
MH
2822MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2823 conversion specification without a maximum field width, thereby enabling
2824 a rogue spamd server to cause a buffer overflow. While nobody in their
2825 right mind would setup Exim to query an untrusted spamd server, an
2826 attacker that gains access to a server running spamd could potentially
2827 exploit this vulnerability to run arbitrary code as the Exim user.
2828
ae276964
TK
2829TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2830 $primary_hostname instead of what libspf2 thinks the hosts name is.
2831
0f2cbd1b
MH
2832MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2833 a directory entry by the name of the lookup key. Previously, if a
2834 symlink pointed to a non-existing file or a file in a directory that
2835 Exim lacked permissions to read, a lookup for a key matching that
2836 symlink would fail. Now it is enough that a matching directory entry
2837 exists, symlink or not. (Bugzilla 503.)
2838
2b85bce7
PH
2839PH/03 The body_linecount and body_zerocount variables are now exported in the
2840 local_scan API.
2841
93655c46
PH
2842PH/04 Added the $dnslist_matched variable.
2843
6c512171
PH
2844PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2845 This means they are set thereafter only if the connection becomes
2846 encrypted.
2847
2848PH/06 Added the client_condition to authenticators so that some can be skipped
2849 by clients under certain conditions.
2850
aa6dc513
PH
2851PH/07 The error message for a badly-placed control=no_multiline_responses left
2852 "_responses" off the end of the name.
2853
a96603a0
PH
2854PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2855
8f240103
PH
2856PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2857 (without spaces) instead of just copying the configuration text.
2858
2859PH/10 Added the /noupdate option to the ratelimit ACL condition.
2860
d677b2f2
PH
2861PH/11 Added $max_received_linelength.
2862
d52120f2
PH
2863PH/12 Added +ignore_defer and +include_defer to host lists.
2864
64f2600a
PH
2865PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2866 way in which PCRE > 7.0 is built.
2867
8669f003
PH
2868PH/14 Implemented queue_only_load_latch.
2869
a4dc33a8
PH
2870PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2871 MAIL command. The effect was to mangle the value on 64-bit systems.
2872
d6a60c0f
PH
2873PH/16 Another patch from the Sieve maintainer.
2874
8f128379
PH
2875PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2876
8932dffe
PH
2877PH/18 If a system quota error occurred while trying to create the file for
2878 a maildir delivery, the message "Mailbox is full" was not appended to the
2879 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2880 only to a quota excession during the actual writing of the file.
d6a60c0f 2881
ddea74fa 2882PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
2883 characters?) which causes problems in log lines. The DN values are now
2884 passed through string_printing() before being added to log lines.
2885
ddea74fa 2886PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
2887 and InterBase are left for another time.)
2888
ddea74fa
PH
2889PH/21 Added message_body_newlines option.
2890
ce9f225c
PH
2891PH/22 Guard against possible overflow in moan_check_errorcopy().
2892
19897d52
PH
2893PH/23 POSIX allows open() to be a macro; guard against that.
2894
bc64a74d
PH
2895PH/24 If the recipient of an error message contained an @ in the local part
2896 (suitably quoted, of course), incorrect values were put in $domain and
2897 $local_part during the evaluation of errors_copy.
2898
eb4c0de6 2899
b4ed4da0
PH
2900Exim version 4.67
2901-----------------
2902
22ad45c9
MH
2903MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2904 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2905 Jan Srzednicki.
2906
b4ed4da0
PH
2907PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2908 issue a MAIL command.
2909
431b7361
PH
2910PH/02 In an ACL statement such as
2911
2912 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2913
2914 if a client was not listed at all, or was listed with a value other than
2915 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2916 the condition was not true (as it should be), so access was not denied.
2917 The bug was that the ! inversion was incorrectly passed on to the second
2918 item. This has been fixed.
2919
2920PH/03 Added additional dnslists conditions == and =& which are different from
2921 = and & when the dns lookup returns more than one IP address.
2922
83da1223
PH
2923PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2924 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2925
54fc8428
PH
2926PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2927 FSYNC, which compiles an option called disable_fsync that allows for
2928 bypassing fsync(). The documentation is heavily laced with warnings.
2929
34c5e8dd
SC
2930SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2931
bbe15da8
PH
2932PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2933 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2934 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2935 including adding "make clean"; (3) Added -fPIC when compiling the test
2936 dynamically loaded module, to get rid of a warning.
2937
0e8a9471
MH
2938MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2939 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2940 = 0s. The bug is otherwise harmless.
2941
f0872424
PH
2942PH/07 There was a bug in the dovecot authenticator such that the value of
2943 $auth1 could be overwritten, and so not correctly preserved, after a
2944 successful authentication. This usually meant that the value preserved by
2945 the server_setid option was incorrect.
2946
b01dd148
PH
2947PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2948
6bf342e1
PH
2949PH/09 Installed PCRE release 7.0.
2950
273f34d0
PH
2951PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2952 run for batched SMTP input. It is now run at the start of every message
2953 in the batch. While fixing this I discovered that the process information
2954 (output by running exiwhat) was not always getting set for -bs and -bS
2955 input. This is fixed, and it now also says "batched" for BSMTP.
2956
cf8b11a5
PH
2957PH/11 Added control=no_pipelining.
2958
41c7c167
PH
2959PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2960 patch, slightly modified), and move the expansion of helo_data till after
2961 the connection is made in the smtp transport (so it can use these
2962 values).
2963
9c57cbc0
PH
2964PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2965
f3f065bb
PH
2966PH/14 Added log_selector = +pid.
2967
047bdd8c
PH
2968PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2969
0ce9abe6
PH
2970PH/16 Add ${if forany and ${if forall.
2971
0e22dfd1
PH
2972PH/17 Added dsn_from option to vary the From: line in DSNs.
2973
4c590bd1
PH
2974PH/18 Flush SMTP output before performing a callout, unless control =
2975 no_callout_flush is set.
2976
09945f1e
PH
2977PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2978 was true (the default) a successful delivery failed to delete the retry
2979 item, thus causing premature timeout of the address. The bug is now
2980 fixed.
2981
c51b8e75
PH
2982PH/20 Added hosts_avoid_pipelining to the smtp transport.
2983
e28326d8 2984PH/21 Long custom messages for fakedefer and fakereject are now split up
4c04137d 2985 into multiline responses in the same way that messages for "deny" and
e28326d8
PH
2986 other ACL rejections are.
2987
75b1493f
PH
2988PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2989 with slight modification.
2990
7c5214ec
PH
2991PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2992 draft, changing the syntax and factoring some duplicate code".
2993
4311097e
PH
2994PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2995 for deliveries of the second and subsequent messages over the same SMTP
2996 connection.
2997
29f89cad
PH
2998PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2999 ${reduce, with only minor "tidies".
3000
5e687460
SC
3001SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
3002
c3611384
PH
3003PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
3004 expansion side effects.
3005
5a11a7b4
PH
3006PH/27 When a message times out after an over-quota error from an Exim-imposed
3007 quota, the bounce message says "mailbox is full". This message was not
3008 being given when it was a system quota that was exceeded. It now should
3009 be the same.
3010
0e20aff9
MH
3011MH/03 Made $recipients available in local_scan(). local_scan() already has
3012 better access to the recipient list through recipients_list[], but
3013 $recipients can be useful in postmaster-provided expansion strings.
3014
ca86f471
PH
3015PH/28 The $smtp_command and $smtp_command_argument variables were not correct
3016 in the case of a MAIL command with additional options following the
3017 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
3018 were accidentally chopped off.
3019
a14e5636
PH
3020PH/29 SMTP synchronization checks are implemented when a command is read -
3021 there is a check that no more input is waiting when there shouldn't be
3022 any. However, for some commands, a delay in an ACL can mean that it is
3023 some time before the response is written. In this time, more input might
3024 arrive, invalidly. So now there are extra checks after an ACL has run for
3025 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
3026 pipelining has not been advertised.
3027
ec95d1a6
PH
3028PH/30 MH's patch to allow iscntrl() characters to be list separators.
3029
42855d71
PH
3030PH/31 Unlike :fail:, a custom message specified with :defer: was not being
3031 returned in the SMTP response when smtp_return_error_details was false.
3032 This has been fixed.
3033
57c2c631
PH
3034PH/32 Change the Dovecot authenticator to use read() and write() on the socket
3035 instead of the C I/O that was originally supplied, because problems were
3036 reported on Solaris.
3037
58c01c94
PH
3038PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
3039 Exim which did not show up earlier: it was assuming that a call to
3040 SSL_CTX_set_info_callback() might give an error value. In fact, there is
3041 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
3042 was a macro that became an assignment, so it seemed to work. This has
3043 changed to a proper function call with a void return, hence the compile
3044 error. Exim's code has been fixed.
3045
dee5a20a
PH
3046PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
3047 cpus.
3048
d2ee6114
PH
3049PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
3050
b2d5182b
PH
3051PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
3052
79749a79
PH
3053PH/37 If a message is not accepted after it has had an id assigned (e.g.
3054 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
3055 "Completed" line in the log. When some messages of this type were
3056 selected by exigrep, they were listed as "not completed". Others were
3057 picked up by some special patterns. I have improved the selection
3058 criteria to be more general.
79749a79 3059
c456d9bb
PH
3060PH/38 The host_find_failed option in the manualroute router can now be set
3061 to "ignore", to completely ignore a host whose IP address cannot be
3062 found. If all hosts are ignored, the behaviour is controlled by the new
3063 host_all_ignored option.
3064
cd9868ec
PH
3065PH/39 In a list of hosts for manualroute, if one item (either because of multi-
3066 homing or because of multiple MX records with /mx) generated more than
3067 one IP address, and the following item turned out to be the local host,
3068 all the secondary addresses of the first item were incorrectly removed
3069 from the list, along with the local host and any following hosts (which
3070 is what is supposed to happen).
3071
ebeaf996
PH
3072PH/40 When Exim receives a message, it writes the login name, uid, and gid of
3073 whoever called Exim into the -H file. In the case of the daemon it was
3074 behaving confusingly. When first started, it used values for whoever
3075 started the daemon, but after a SIGHUP it used the Exim user (because it
3076 calls itself on a restart). I have changed the code so that it now always
3077 uses the Exim user.
3078
2679d413
PH
3079PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
3080 message are rejected with the same error (e.g. no authentication or bad
3081 sender address), and a DATA command is nevertheless sent (as can happen
3082 with PIPELINING or a stupid MUA), the error message that was given to the
3083 RCPT commands is included in the rejection of the DATA command. This is
3084 intended to be helpful for MUAs that show only the final error to their
3085 users.
3086
84024b72
PH
3087PH/42 Another patch from the Sieve maintainer.
3088
8005d38e
SC
3089SC/02 Eximstats - Differentiate between permanent and temporary rejects.
3090 Eximstats - Fixed some broken HTML links and added missing column headers
3091 (Jez Hancock).
3092 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
3093 columns for Rejects, Temp Rejects, Ham, and Spam rows.
3094
3298c6c6
SC
3095SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
3096
a43a27c5
PH
3097PH/43 Yet another patch from the Sieve maintainer.
3098
58eb016e 3099PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
3100 the response to the final '.' that terminates a message, but only in the
3101 case where the client has not sent further data following the '.'
3102 (unfortunately, this is allowed). However, in many cases there won't be
3103 any further data because there won't be any more messages to send. A call
3104 to select() can be used: if it shows that the input is "ready", there is
3105 either input waiting, or the socket has been closed. An attempt to read
3106 the next input character can distinguish the two cases. Previously, Exim
58eb016e 3107 would have sent an OK response which the client would never have see.
563b63fa
PH
3108 This could lead to message repetition. This fix should cure that, at
3109 least in a lot of common cases.
58eb016e 3110
b43a74ea
PH
3111PH/45 Do not advertise STARTTLS in response to HELP unless it would be
3112 advertised in response to EHLO.
3113
b4ed4da0 3114
5dd1517f
PH
3115Exim version 4.66
3116-----------------
3117
3118PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
3119 fixed by 4.65/MH/01 (is this a record?) are fixed:
3120
3121 (i) An empty string was always treated as zero by the numeric comparison
3122 operators. This behaviour has been restored.
3123
3124 (ii) It is documented that the numeric comparison operators always treat
3125 their arguments as decimal numbers. This was broken in that numbers
3126 starting with 0 were being interpreted as octal.
3127
3128 While fixing these problems I realized that there was another issue that
3129 hadn't been noticed. Values of message_size_limit (both the global option
3130 and the transport option) were treated as octal if they started with 0.
3131 The documentation was vague. These values are now always treated as
3132 decimal, and I will make that clear in the documentation.
3133
3134
93cfa765
TK
3135Exim version 4.65
3136-----------------
3137
3138TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
3139 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
3140 versions. (#438)
3141
d6066548
MH
3142MH/01 Don't check that the operands of numeric comparison operators are
3143 integers when their expansion is in "skipping" mode (fixes bug
3144 introduced by 4.64-PH/07).
3145
4362ff0d
PH
3146PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
3147 child addresses, Exim now panics and dies. Previously, because the count
3148 is held in a short int, deliveries were likely to be lost. As such a
3149 large number of recipients for a single message is ridiculous
3150 (performance will be very, very poor), I have chosen to impose a limit
3151 rather than extend the field.
3152
93cfa765 3153
944e9e9c
TF
3154Exim version 4.64
3155-----------------
aa41d2de 3156
21d74bd9
TK
3157TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
3158 leftover -K file (the existence of which was triggered by #402).
3159 While we were at it, introduced process PID as part of the -K
3160 filename. This should rule out race conditions when creating
3161 these files.
3162
3163TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
3164 processing considerably. Previous code took too long for large mails,
3165 triggering a timeout which in turn triggers #401.
3166
3167TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
3168 in the DK code in transports.c. sendfile() is not really portable,
3169 hence the _LINUX specificness.
944e9e9c
TF
3170
3171TF/01 In the add_headers option to the mail command in an Exim filter,
3172 there was a bug that Exim would claim a syntax error in any
3173 header after the first one which had an odd number of characters
3174 in the field name.
3175
2b1c6e3a
PH
3176PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
3177 callout verification, Exim cached a "reject" for the entire domain. This
3178 is correct for most verifications, but it is not correct for a recipient
3179 verification with use_sender or use_postmaster set, because in that case
3180 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
3181 case of MAIL FROM:<> rejection from other early rejections (e.g.
3182 rejection of HELO). When verifying a recipient using a non-null MAIL
3183 address, the cache is ignored if it shows MAIL FROM:<> rejection.
3184 Whatever the result of the callout, the value of the domain cache is
3185 left unchanged (for any other kind of callout, getting as far as trying
3186 RCPT means that the domain itself is ok).
3187
1f872c80
PH
3188PH/02 Tidied a number of unused variable and signed/unsigned warnings that
3189 gcc 4.1.1 threw up.
3190
3191PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
3192 manifest itself as EPIPE rather than ECONNECT. When tidying away a
3193 session, the daemon ignores ECONNECT errors and logs others; it now
3194 ignores EPIPE as well.
3195
d203e649
PH
3196PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
3197 (quoted-printable decoding).
3198
cc2ed8f7 3199PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 3200 later the small subsequent patch to fix an introduced bug.
f951fd57 3201
ddfcd446
PH
3202PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
3203
d45b1de8
PH
3204PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
3205
3206PH/08 An error is now given if message_size_limit is specified negative.
3207
38a0a95f 3208PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 3209 to be given (somewhat) arbitrary names.
38a0a95f 3210
a2405d83
JJ
3211JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
3212 in 4.64-PH/09.
3213
3214JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
3215 miscellaneous code fixes
3216
6ea85e9a
PH
3217PH/10 Added the log_reject_target ACL modifier to specify where to log
3218 rejections.
3219
26da7e20
PH
3220PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
3221 hostname. This is wrong, because it relates to the incoming message (and
3222 probably the interface on which it is arriving) and not to the outgoing
3223 callout (which could be using a different interface). This has been
3224 changed to use the value of the helo_data option from the smtp transport
3225 instead - this is what is used when a message is actually being sent. If
3226 there is no remote transport (possible with a router that sets up host
3227 addresses), $smtp_active_hostname is used.
6ea85e9a 3228
14aa5a05 3229PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 3230 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
3231 (a) The code assumed that strncpy() returns a negative number on buffer
3232 overflow, which isn't the case. Replaced with Exim's string_format()
3233 function.
3234 (b) There were several signed/unsigned issues. I just did the minimum
3235 hacking in of casts. There is scope for a larger refactoring.