Eximon: fix string-handling. Bug 2500
[exim.git] / doc / doc-txt / ChangeLog
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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
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6Exim version 4.94
7-----------------
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8
9JH/01 Avoid costly startup code when not strictly needed. This reduces time
10 for some exim process initialisations. It does mean that the logging
11 of TLS configuration problems is only done for the daemon startup.
12
81344b40
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13JH/02 Early-pipelining support code is now included unless disabled in Makefile.
14
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15JH/03 DKIM verification defaults no long accept sha1 hashes, to conform to
16 RFC 8301. They can still be enabled, using the dkim_verify_hashes main
17 option.
18
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19JH/04 Support CHUNKING from an smtp transport using a transport_filter, when
20 DKIM signing is being done. Previously a transport_filter would always
21 disable CHUNKING, falling back to traditional DATA.
22
f0fe22cb
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23JH/05 Regard command-line receipients as tainted.
24
01446a56
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25JH/06 Bug 340: Remove the daemon pid file on exit, whe due to SIGTERM.
26
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27JH/07 Bug 2489: Fix crash in the "pam" expansion condition. It seems that the
28 PAM library frees one of the arguments given to it, despite the
29 documentation. Therefore a plain malloc must be used.
30
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31JH/08 Bug 2491: Use tainted buffers for the transport smtp context. Previously
32 on-stack buffers were used, resulting in a taint trap when DSN information
33 copied from a received message was written into the buffer.
34
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35JH/09 Bug 2493: Harden ARC verify against Outlook, whick has been seen to mix
36 the ordering of its ARC headers. This caused a crash.
37
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38JH/10 Bug 2492: Use tainted memory for retry record when needed. Previously when
39 a new record was being constructed with information from the peer, a trap
40 was taken.
41
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42JH/11 Bug 2494: Unset the default for dmarc_tld_file. Previously a naiive
43 installation would get error messages from DMARC verify, when it hit the
44 nonexistent file indicated by the default. Distros wanting DMARC enabled
45 should both provide the file and set the option.
46 Also enforce no DMARC verification for command-line sourced messages.
47
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48JH/12 Fix an uninitialised flag in early-pipelining. Previously connections
49 could, depending on the platform, hang at the STARTTLS response.
50
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51JH/13 Bug 2498: Reset a counter used for ARC verify before handling another
52 message on a connection. Previously if one message had ARC headers and
53 the following one did not, a crash could result when adding an
54 Authentication-Results: header.
55
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56JH/14 Bug 2500: Rewind some of the common-coding in string handling between the
57 Exim main code and Exim-related utities. The introduction of taint
58 tracking also did many adjustments to string handling. Since then, eximon
59 frequently terminated with an assert failure.
60
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62Exim version 4.93
63-----------------
64
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65JH/01 OpenSSL: With debug enabled output keying information sufficient, server
66 side, to decode a TLS 1.3 packet capture.
40ed89b3 67
fc243e94 68JH/02 OpenSSL: Suppress the sending of (stateful) TLS1.3 session tickets.
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69 Previously the default library behaviour applied, sending two, each in
70 its own TCP segment.
71
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72JH/03 Debug output for ACL now gives the config file name and line number for
73 each verb.
74
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75JH/04 The default received_header_text now uses the RFC 8314 tls cipher clause.
76
fe12ec88
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77JH/05 DKIM: ensure that dkim_domain elements are lowercased before use.
78
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79JH/06 Fix buggy handling of autoreply bounce_return_size_limit, and a possible
80 buffer overrun for (non-chunking) other transports.
81
fc243e94
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82JH/07 GnuTLS: Our use of late (post-handshake) certificate verification, under
83 TLS1.3, means that a server rejecting a client certificate is not visible
84 to the client until the first read of encrypted data (typically the
85 response to EHLO). Add detection for that case and treat it as a failed
86 TLS connection attempt, so that the normal retry-in-clear can work (if
87 suitably configured).
88
c05bdbd6 89JB/01 Bug 2375: fix expansions of 822 addresses having comments in local-part
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90 and/or domain. Found and fixed by Jason Betts.
91
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92JH/08 Add hardening against SRV & TLSA lookups the hit CNAMEs (a nonvalid
93 configuration). If a CNAME target was not a wellformed name pattern, a
94 crash could result.
95
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96JH/09 Logging: Fix initial listening-on line for multiple ports for an IP when
97 the OS reports them interleaved with other addresses.
98
c09dbcfb
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99JH/10 OpenSSL: Fix aggregation of messages. Previously, when PIPELINING was
100 used both for input and for a verify callout, both encrypted, SMTP
101 responses being sent by the server could be lost. This resulted in
102 dropped connections and sometimes bounces generated by a peer sending
103 to this system.
254f38d1 104
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105JH/11 Harden plaintext authenticator against a badly misconfigured client-send
106 string. Previously it was possible to cause undefined behaviour in a
107 library routine (usually a crash). Found by "zerons".
108
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109JH/12 Bug 2384: fix "-bP smtp_receive_timeout". Previously it returned no
110 output.
111
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112JH/13 Bug 2386: Fix builds with Dane under LibreSSL 2.9.0 onward. Some old
113 API was removed, so update to use the newer ones.
114
3c55eef2 115JH/14 Bug 1891: Close the log file if receiving a non-smtp message, without
00c0dd4e 116 any timeout set, is taking a long time. Previously we would hang on to a
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117 rotated logfile "forever" if the input was arriving with long gaps
118 (a previous attempt to fix addressed lack, for a long time, of initial
119 input).
120
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121HS/01 Bug 2390: Use message_id for tempfile creation to avoid races in a
122 shared (NFS) environment. The length of the tempfile name is now
123 4 + 16 ("hdr.$message_exim_id") which might break on file
124 systems which restrict the file name length to lower values.
125 (It was "hdr.$pid".)
126
7d8d08c4 127HS/02 Bug 2390: Use message_id for tempfile creation to avoid races in a
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128 shared (NFS) environment.
129
7d8d08c4 130HS/03 Bug 2392: exigrep does case sensitive *option* processing (as it
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131 did for all versions <4.90). Notably -M, -m, --invert, -I may be
132 affected.
133
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134JH/15 Use unsigned when creating bitmasks in macros, to avoid build errors
135 on some platforms for bit 31.
136
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137JH/16 GnuTLS: rework ciphersuite strings under recent library versions. Thanks
138 to changes apparently associated with TLS1.3 handling some of the APIs
139 previously used were either nonfunctional or inappropriate. Strings
140 like TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM__AEAD:256
141 and TLS1.2:ECDHE_SECP256R1__RSA_SHA256__AES_128_CBC__SHA256:128 replace
142 the previous TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256 .
143 This affects log line X= elements, the $tls_{in,out}_cipher variables,
144 and the use of specific cipher names in the encrypted= ACL condition.
145
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146JH/17 OpenSSL: the default openssl_options now disables ssl_v3.
147
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148JH/18 GnuTLS: fix $tls_out_ocsp under hosts_request_ocsp. Previously the
149 verification result was not updated unless hosts_require_ocsp applied.
150
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151JH/19 Bug 2398: fix listing of a named-queue. Previously, even with the option
152 queue_list_requires_admin set to false, non-admin users were denied the
153 facility.
154
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155JH/20 Bug 2389: fix server advertising of usable certificates, under GnuTLS in
156 directory-of-certs mode. Previously they were advertised despite the
157 documentation.
158
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159JH/21 The smtp transport option "hosts_noproxy_tls" is now unset by default.
160 A single TCP connection by a client will now hold a TLS connection open
161 for multiple message deliveries, by default. Previoud the default was to
162 not do so.
163
59c0959a 164JH/22 The smtp transport option "hosts_try_dane" now enables all hosts by
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165 default. If built with the facility, DANE will be used. The facility
166 SUPPORT_DANE is now enabled in the prototype build Makefile "EDITME".
167
168JH/23 The build default is now for TLS to be included; the SUPPORT_TLS define
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169 is replaced with DISABLE_TLS. Either USE_GNUTLS or (the new) USE_OPENSSL
170 must be defined and you must still, unless you define DISABLE_TLS, manage
171 the the include-dir and library-file requirements that go with that
172 choice. Non-TLS builds are still supported.
59c0959a 173
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174JH/24 Fix duplicated logging of peer name/address, on a transport connection-
175 reject under TFO.
96eb7d2a 176
efad2f41 177JH/25 The smtp transport option "hosts_try_fastopen" now enables all hosts by
4e48d56c 178 default. If the platform supports and has the facility enabled, it will
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179 be requested on all coneections.
180
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181JH/26 The PIPE_CONNECT facility is promoted from experimental status and is now
182 controlled by the build-time option SUPPORT_PIPE_CONNECT.
183
6ee11061 184PP/01 Unbreak heimdal_gssapi, broken in 4.92.
0a5441fc 185
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186JH/27 Bug 2404: Use the main-section configuration option "dsn_from" for
187 success-DSN messages. Previously the From: header was always the default
188 one for these; the option was ignored.
6ee11061 189
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190JH/28 Fix the timeout on smtp response to apply to the whole response.
191 Previously it was reset for every read, so a teergrubing peer sending
192 single bytes within the time limit could extend the connection for a
193 long time. Credit to Qualsys Security Advisory Team for the discovery.
194
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195JH/29 Fix DSN Final-Recipient: field. Previously it was the post-routing
196 delivery address, which leaked information of the results of local
197 forwarding. Change to the original envelope recipient address, per
198 standards.
199
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200JH/30 Bug 2411: Fix DSN generation when RFC 3461 failure notification is
201 requested. Previously not bounce was generated and a log entry of
202 error ignored was made.
203
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204JH/31 Avoid re-expansion in ${sort } expansion. (CVE-2019-13917)
205
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206JH/32 Introduce a general tainting mechanism for values read from the input
207 channel, and values derived from them. Refuse to expand any tainted
208 values, to catch one form of exploit.
209
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210JH/33 Bug 2413: Fix dkim_strict option. Previously the expansion result
211 was unused and the unexpanded text used for the test. Found and
212 fixed by Ruben Jenster.
213
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214JH/34 Fix crash after TLS shutdown. When the TCP/SMTP channel was left open,
215 an attempt to use a TLS library read routine dereffed a nul pointer,
216 causing a segfault.
217
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218JH/35 Bug 2409: filter out-of-spec chars from callout response before using
219 them in our smtp response.
220
9c6881f8 221JH/36 Have the general router option retry_use_local_part default to true when
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222 any of the restrictive preconditions are set (to anything). Previously it
223 was only for check_local user. The change removes one item of manual
224 configuration which is required for proper retries when a remote router
225 handles a subset of addresses for a domain.
226
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227JH/37 Appendfile: when evaluating quota use (non-quota_size_regex) take the file
228 link count into consideration.
229
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230HS/04 Fix handling of very log lines in -H files. If a -<key> <value> line
231 caused the extension of big_buffer, the following lines were ignored.
232
233JH/38 Bug 1395: Teach the DNS negative-cache about TTL value from the SOA in
234 accordance with RFC 2308. Previously there was no expiry, so a longlived
235 receive process (eg. due to ACL delays) versus a short SOA value could
236 surprise.
237
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238HS/05 Handle trailing backslash gracefully. (CVE-2019-15846)
239
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240JH/39 Promote DMARC support to mainline.
241
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242JH/40 Bug 2452: Add a References: header to DSNs.
243
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244JH/41 With GnuTLS 3.6.0 (and later) do not attempt to manage Diffie-Hellman
245 parameters. The relevant library call is documented as "Deprecated: This
246 function is unnecessary and discouraged on GnuTLS 3.6.0 or later. Since
247 3.6.0, DH parameters are negotiated following RFC7919."
248
ab0e957b 249HS/06 Change the default of dnssec_request_domains to "*"
40ed89b3 250
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251JH/42 Bug 2545: Fix CHUNKING for all RCPT commands rejected. Previously we
252 carried on and emitted a BDAT command, even when PIPELINING was not
253 active.
254
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255JH/43 Bug 2465: Fix taint-handling in dsearch lookup. Previously a nontainted
256 buffer was used for the filename, resulting in a trap when tainted
257 arguments (eg. $domain) were used.
258
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259JH/44 With OpenSSL 1.1.1 (onwards) disable renegotiation for TLS1.2 and below;
260 recommended to avoid a possible server-load attack. The feature can be
261 re-enabled via the openssl_options main cofiguration option.
262
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263JH/45 local_scan API: documented the current smtp_printf() call. This changed
264 for version 4.90 - adding a "more data" boolean to the arguments.
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265 Bumped the ABI version number also, this having been missed previously;
266 release versions 4.90 to 4.92.3 inclusive were effectively broken in
267 respect of usage of smtp_printf() by either local_scan code or libraries
268 accessed via the ${dlfunc } expansion item. Both will need coding
269 adjustment for any calls to smtp_printf() to match the new function
270 signature; a FALSE value for the new argument is always safe.
b2d54f83 271
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272JH/46 FreeBSD: fix use of the sendfile() syscall. The shim was not updating
273 the file-offset (which the Linux syscall does, and exim expects); this
274 resulted in an indefinite loop.
275
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276JH/47 ARC: fix crash in signing, triggered when a configuration error failed
277 to do ARC verification. The Authentication-Results: header line added
278 by the configuration then had no ARC item.
279
c5040dfd 280
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281Exim version 4.92
282-----------------
283
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284JH/01 Remove code calling the customisable local_scan function, unless a new
285 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
286
287JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
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288 non-signal-safe functions being used.
289
290JH/03 Bug 2269: When presented with a received message having a stupidly large
291 number of DKIM-Signature headers, disable DKIM verification to avoid
292 a resource-consumption attack. The limit is set at twenty.
9723f966 293
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294JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
295 report of oldest_pass in ${authres } in consequence, and separate out
296 some descriptions of reasons for verification fail.
297
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298JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
299 files in the spool were present and unlocked. A queue-runner could spot
300 them, resulting in a duplicate delivery. Fix that by doing the unlock
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301 after the unlink. Investigation by Tim Stewart. Take the opportunity to
302 add more error-checking on spoolfile handling while that code is being
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303 messed with.
304
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305PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
306 No known attacks, no CVE, this is defensive hardening.
307
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308JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
309 a queue-runner could start a delivery while other operations were ongoing.
310 Cutthrough delivery was a common victim, resulting in duplicate delivery.
311 Found and investigated by Tim Stewart. Fix by using the open message data
312 file handle rather than opening another, and not locally closing it (which
313 releases a lock) for that case, while creating the temporary .eml format
314 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
315
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316JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
317 $sender_verify_failure/$recipient_verify_failure to "random".
318
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319JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
320 legitimate.
321
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322JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
323 Previously this would segfault.
324
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325JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
326 segfault.
327
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328JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
329 like zero, since the resolver should be doing this for us, But we need one
330 as a CNAME but no MX presence gets the CNAME returned; we need to check
331 that doesn't point to an MX to declare it "no MX returned" rather than
332 "error, loop". A new main option is added so the older capability of
333 following some limited number of chain links is maintained.
334
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335JH/12 Add client-ip info to non-pass iprev ${authres } lines.
336
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337JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
338 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
339 now-deprecated earlier definitions used only specified the range up to TLS
340 1.2 (in the older-version library docs).
341
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342JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
343
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344JH/15 Rework TLS client-side context management. Stop using a global, and
345 explicitly pass a context around. This enables future use of TLS for
346 connections to service-daemons (eg. malware scanning) while a client smtp
347 connection is using TLS; with cutthrough connections this is quite likely.
348
5054c4fd 349JH/16 Fix ARC verification to do AS checks in reverse order.
611b1961
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350
351JH/17 Support a "tls" option on the ${readsocket } expansion item.
5054c4fd 352
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353JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
354 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
355 Previously the "utf8" would be re-prepended for every additional message.
356
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357JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
358 Previously thery were accepted, resulting in issues when attempting to
359 forward messages to a non-supporting MTA.
360
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361PP/02 Let -n work with printing macros too, not just options.
362
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363JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
364 one parent address was copied, and bogus data was used at delivery-logging
365 time. Either a crash (after delivery) or bogus log data could result.
366 Discovery and analysis by Tim Stewart.
367
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368PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
369 Previously if the string ended mid-character, we did not insert the
370 promised '?' replacement.
371
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372PP/04 Documentation: current string operators work on bytes, not codepoints.
373
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374JH/21 Change as many as possible of the global flags into one-bit bitfields; these
375 should pack well giving a smaller memory footprint so better caching and
376 therefore performance. Group the declarations where this can't be done so
377 that the byte-sized flag variables are not interspersed among pointer
378 variables, giving a better chance of good packing by the compiler.
379
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380JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
381 non-null, to avoid issues with sites running BATV. Previously reports were
382 sent with an empty envelope sender so looked like bounces.
383
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384JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
385 The ignore_error flag wasn't being returned from the filter subprocess so
386 was not set for later routers. Investigation and fix by Matthias Kurz.
387
7ea1237c 388JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
570cb1bd 389 and a msg:complete for the whole, when a message is manually removed using
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390 -Mrm. Developement by Matthias Kurz, hacked on by JH.
391
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392JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
393 a "Gnu special" function, asprintf() in the DB utility binary builds; I
394 hope that is portable enough.
395
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396JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
397 requiring a known-CA anchor certificate; make it now rely entirely on the
398 TLSA as an anchor. Checking the name on the leaf cert against the name
399 on the A-record for the host is still done for TA (but not for EE mode).
400
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401JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
402 included in delivery lines for non-proxied connections, when compiled with
403 SUPPORT_SOCKS and running with proxy logging enabled.
404
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405JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
406 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
407 move the existing event to fire before the normal logging of message
408 failure so that custom logging is bracketed by normal logging.
409
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410JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
411 msg:fail:internal event. Developement by Matthias Kurz.
412
75c121f0 413JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
059f2ace 414 far too small for todays use of crypto signatures stored there. Go all
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415 the way to the max DNS message size of 64kB, even though this might be
416 overmuch for IOT constrained device use.
417
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418JH/31 Fix a bad use of a copy function, which could be used to pointlessly
419 copy a string over itself. The library routine is documented as not
420 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
421
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422JH/32 For main options check_spool_space and check_inode_space, where the
423 platform supports 64b integers, support more than the previous 2^31 kB
424 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
425 the previous G, M, k.
426
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427JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
428 $authenticated_fail_id variable on authentication failure. Previously
429 it was unset.
430
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431JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
432 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
433 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
434 GNUTLS_SEC_PARAM_MEDIUM.
435
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436JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server
437 side. Previously we would continue as if no SNI had been received.
438
de6f74f2 439JH/36 Harden the handling of string-lists. When a list consisted of a sole
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440 "<" character, which should be a list-separator specification, we walked
441 off past the nul-terimation.
442
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443JH/37 Bug 2341: Send "message delayed" warning MDNs (restricted to external
444 causes) even when the retry time is not yet met. Previously they were
445 not, meaning that when (say) an account was over-quota and temp-rejecting,
446 and multiple senders' messages were queued, only one sender would get
447 notified on each configured delay_warning cycle.
448
aa6e77af 449JH/38 Bug 2351: Log failures to extract envelope addresses from message headers.
aaf3e414 450
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451JH/39 OpenSSL: clear the error stack after an SSL_accept(). With anon-auth
452 cipher-suites, an error can be left on the stack even for a succeeding
453 accept; this results in impossible error messages when a later operation
454 actually does fail.
455
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456AM/01 Bug 2359: GnuTLS: repeat lowlevel read and write operations while they
457 return error codes indicating retry. Under TLS1.3 this becomes required.
458
459JH/40 Fix the feature-cache refresh for EXPERIMENTAL_PIPE_CONNECT. Previously
460 it only wrote the new authenticators, resulting in a lack of tracking of
461 peer changes of ESMTP extensions until the next cache flush.
518b70e9 462
56ac062a
JH
463JH/41 Fix the loop reading a message header line to check for integer overflow,
464 and more-often against header_maxsize. Previously a crafted message could
465 induce a crash of the recive process; now the message is cleanly rejected.
466
ae63862b
MA
467JH/42 Bug 2366: Fix the behaviour of the dkim_verify_signers option. It had
468 been totally disabled for all of 4.91. Discovery and fix by "Mad Alex".
469
9723f966 470
bb264f6b
JH
471Exim version 4.91
472-----------------
459fca58 473
c39c8870 474GF/01 DEFER rather than ERROR on redis cluster MOVED response.
bb264f6b
JH
475 When redis_servers is set to a list of > 1 element, and the Redis servers
476 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
477 case of MOVED into a DEFER case instead, thus moving the query onto the
478 next server in the list. For a cluster of N elements, all N servers must
479 be defined in redis_servers.
c39c8870 480
0800ef83
GF
481GF/02 Catch and remove uninitialized value warning in exiqsumm
482 Check for existence of @ARGV before looking at $ARGV[0]
483
459fca58
JH
484JH/01 Replace the store_release() internal interface with store_newblock(),
485 which internalises the check required to safely use the old one, plus
486 the allocate and data copy operations duplicated in both (!) of the
487 extant use locations.
488
944e8b37
JH
489JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
490 modifier. This matches the restriction on the commandline.
491
bbfb5dcd
JH
492JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
493 Previously only the last row was returned.
494
a05d3e34
JH
495JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
496 we assumed that tags in the header were well-formed, and parsed the
497 element content after inspecting only the first char of the tag.
498 Assumptions at that stage could crash the receive process on malformed
499 input.
500
ce93c6d8
JH
501JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
502 While running the DKIM ACL we operate on the Permanent memory pool so that
503 variables created with "set" persist to the DATA ACL. Also (at any time)
504 DNS lookups that fail create cache records using the Permanent pool. But
505 expansions release any allocations made on the current pool - so a dnsdb
506 lookup expansion done in the DKIM ACL releases the memory used for the
507 DNS negative-cache, and bad things result. Solution is to switch to the
508 Main pool for expansions.
509 While we're in that code, add checks on the DNS cache during store_reset,
510 active in the testsuite.
511 Problem spotted, and debugging aided, by Wolfgang Breyha.
512
2577f55f
JH
513JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
514 When none of the hosts presented to a transport match an already-open
515 connection, close it and proceed with the list. Previously we would
516 queue the message. Spotted by Lena with Yahoo, probably involving
517 round-robin DNS.
518
5b6f7658
JH
519JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
520 Previously a spurious "250 OK id=" response was appended to the proper
521 failure response.
522
c11d665d
JH
523JH/08 The "support for" informational output now, which built with Content
524 Scanning support, has a line for the malware scanner interfaces compiled
525 in. Interface can be individually included or not at build time.
e5ba8aa7
JH
526
527JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
528 by the template makefile "src/EDITME". The "STREAM" support for an older
529 ClamAV interface method is removed.
c11d665d 530
ba0e37b1
JH
531JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
532 rows affected is given instead).
533
96508de1
JH
534JH/11 The runtime Berkeley DB library version is now additionally output by
535 "exim -d -bV". Previously only the compile-time version was shown.
536
06fdb9f7
JH
537JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
538 SMTP connection. Previously, when one had more receipients than the
539 first, an abortive onward connection was made. Move to full support for
540 multiple onward connections in sequence, handling cutthrough connection
541 for all multi-message initiating connections.
542
f83a760f
JH
543JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
544 routers. Previously, a multi-recipient message would fail to match the
545 onward-connection opened for the first recipient, and cause its closure.
546
f1fed05b
JH
547JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
548 a timeout on read on a GnuTLS initiating connection, resulting in the
549 initiating connection being dropped. This mattered most when the callout
550 was marked defer_ok. Fix to keep the two timeout-detection methods
551 separate.
552
051d5efa
JH
553JH/15 Relax results from ACL control request to enable cutthrough, in
554 unsupported situations, from error to silently (except under debug)
555 ignoring. This covers use with PRDR, frozen messages, queue-only and
556 fake-reject.
557
cf3cd306
HSHR
558HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
559
744976d4
JH
560JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
561 metadata, resulting in a crash in free().
562
aab9a843 563PP/01 Fix broken Heimdal GSSAPI authenticator integration.
7be14582 564 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
aab9a843 565 Broken also in d185889f4, with init system revamp.
7be14582 566
83d2a861
JH
567JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
568 Previously we abruptly closed the connection after reading a malware-
569 found indication; now we go on to read the "scan ok" response line,
570 and send a quit.
571
6741531c
JH
572JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
573 ACL. Previously, a crash would result.
574
85e03244
JH
575JH/19 Speed up macro lookups during configuration file read, by skipping non-
576 macro text after a replacement (previously it was only once per line) and
577 by skipping builtin macros when searching for an uppercase lead character.
578
c0635b6d
JH
579JH/20 DANE support moved from Experimental to mainline. The Makefile control
580 for the build is renamed.
581
b808677c
JH
582JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
583 was allocated for every new TLS startup, meaning one per message. Fix
584 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
585
6678c382
JH
586JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
587 reported the original. Fix to report (as far as possible) the ACL
588 result replacing the original.
589
dec766a1
WB
590JH/23 Fix memory leak during multi-message connections using STARTTLS under
591 OpenSSL. Certificate information is loaded for every new TLS startup,
592 and the resources needed to be freed.
593
15ae19f9
JH
594JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
595
e6532c4a
JH
596JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
597 was not propagated.
598
2556b3c6
SA
599JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
600 DATA response info to the (existing) per-recipient response info for
601 the "C=" log element. It can have useful tracking info from the
602 destination system. Patch from Simon Arlott.
603
fc8cd529
JH
604JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
605 length value. Previously this would segfault.
606
71bb51e0
HSHR
607HS/02 Support Avast multiline protoocol, this allows passing flags to
608 newer versions of the scanner.
609
e04bfa34
JH
610JH/28 Ensure that variables possibly set during message acceptance are marked
611 dead before release of memory in the daemon loop. This stops complaints
612 about them when the debug_store option is enabled. Discovered specifically
613 for sender_rate_period, but applies to a whole set of variables.
c232fc99
JH
614 Do the same for the queue-runner and queue-list loops, for variables set
615 from spool message files. Do the same for the SMTP per-message loop, for
616 certain variables indirectly set in ACL operations.
e04bfa34 617
ecce6d9a
JH
618JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
619 as a multi-recipient message from a mailinglist manager). The coding had
620 an arbitrary cutoff number of characters while checking for more input;
621 enforced by writing a NUL into the buffer. This corrupted long / fast
622 input. The problem was exposed more widely when more pipelineing of SMTP
623 responses was introduced, and one Exim system was feeding another.
624 The symptom is log complaints of SMTP syntax error (NUL chars) on the
625 receiving system, and refused recipients seen by the sending system
626 (propating to people being dropped from mailing lists).
627 Discovered and pinpointed by David Carter.
628
c9cf9ac4
JH
629JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
630 replaced by the ${authresults } expansion.
631
b3b37076
JH
632JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
633
830832c9
HSHR
634HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
635 allows proper process termination in container environments.
636
f64e8b5f
JH
637JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
638 Previously the "final dot" had a newline after it; ensure it is CR,LF.
639
8f0776b5
JH
640JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
641 and "err_perm", deprecated since 4.83 when the RFC-defined words
642 "temperror" and "permerror" were introduced.
643
857eaf37
JH
644JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
645 transport-filters or DKIM-signing. The restriction was lost in the
646 consolidation of verify-callout and delivery SMTP handling.
5add7dc4 647 Extend the restriction to also cover ARC-signing.
857eaf37 648
c85476e9
JH
649JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
650 in defer=pass mode supply a 450 to the initiator. Previously the message
651 would be spooled.
652
405074ad
PP
653PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
654 tls_require_ciphers is used as before.
655
eb445b04
HSHR
656HS/03 Malware Avast: Better match the Avast multiline protocol. Add
657 "pass_unscanned". Only tmpfails from the scanner are written to
658 the paniclog, as they may require admin intervention (permission
659 denied, license issues). Other scanner errors (like decompression
660 bombs) do not cause a paniclog entry.
ad93c40f 661
d342446f
JH
662JH/36 Fix reinitialisation of DKIM logging variable between messages.
663 Previously it was possible to log spurious information in receive log
664 lines.
665
a28050f8
JH
666JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
667 triggered odd behaviour from Outlook Express clients.
668
ddd16464
PP
669PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
670 suffix list.
671
321ef002
JH
672JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
673 since the IETF WG has not yet settled on that versus the original
674 "bare" representation.
675
3203e7ba
JH
676JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
677 Previously the millisecond value corrupted the output.
678 Fix also for syslog_pid=no and log_selector +pid, for which the pid
679 corrupted the output.
680
bbfb5dcd 681
acfc18c3
PP
682Exim version 4.90
683-----------------
684
685JH/01 Rework error string handling in TLS interface so that the caller in
686 more cases is responsible for logging. This permits library-sourced
687 string to be attached to addresses during delivery, and collapses
688 pairs of long lines into single ones.
689
856d1e16
PP
690PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
691 during configuration. Wildcards are allowed and expanded.
692
b9df1829
JH
693JH/02 Rework error string handling in DKIM to pass more info back to callers.
694 This permits better logging.
695
875512a3
JH
696JH/03 Rework the transport continued-connection mechanism: when TLS is active,
697 do not close it down and have the child transport start it up again on
698 the passed-on TCP connection. Instead, proxy the child (and any
699 subsequent ones) for TLS via a unix-domain socket channel. Logging is
700 affected: the continued delivery log lines do not have any DNSSEC, TLS
5013d912 701 Certificate or OCSP information. TLS cipher information is still logged.
875512a3 702
fc3f96af
JH
703JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
704 identical IP addresses on different listening ports. Will also affect
705 "exiwhat" output.
706
98913c8e
BK
707PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
708 add noisy ifdef guards to special-case this sillyness.
709 Patch from Bernd Kuhls.
710
8d909960
JH
711JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
712 than 255 are no longer allowed.
713
7006ee24
JH
714JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
715 Disable the session-cache too, which might reduce our load. Since we
716 currrectly use a new context for every connection, both as server and
717 client, there is no benefit for these.
718 GnuTLS appears to not support tickets server-side by default (we don't
719 call gnutls_session_ticket_enable_server()) but client side is enabled
720 by default on recent versions (3.1.3 +) unless the PFS priority string
721 is used (3.2.4 +).
722
6e411084
PP
723PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
724 <https://reproducible-builds.org/specs/source-date-epoch/>.
725
4c2471ca
JH
726JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
727 the check for any unsuccessful recipients did not notice the limit, and
728 erroneously found still-pending ones.
729
4e910c01
JH
730JH/08 Pipeline CHUNKING command and data together, on kernels that support
731 MSG_MORE. Only in-clear (not on TLS connections).
732
42055a33
JH
733JH/09 Avoid using a temporary file during transport using dkim. Unless a
734 transport-filter is involved we can buffer the headers in memory for
735 creating the signature, and read the spool data file once for the
736 signature and again for transmission.
737
eeb35890
JH
738JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
739 4.77 as the kernel support then wasn't solid, having issues in 64bit
7d758a6a 740 mode. Now, it's been long enough. Add support for FreeBSD also.
eeb35890 741
b7d3afcf
JH
742JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
743 case where the routing stage had gathered several addresses to send to
744 a host before calling the transport for the first, we previously failed
745 to close down TLS in the old transport process before passing the TCP
746 connection to the new process. The new one sent a STARTTLS command
747 which naturally failed, giving a failed delivery and bloating the retry
748 database. Investigation and fix prototype from Wolfgang Breyha.
749
40525d07
JH
750JH/12 Fix check on SMTP command input synchronisation. Previously there were
751 false-negatives in the check that the sender had not preempted a response
752 or prompt from Exim (running as a server), due to that code's lack of
a5ffa9b4 753 awareness of the SMTP input buffering.
40525d07 754
f33875c3
PP
755PP/04 Add commandline_checks_require_admin option.
756 Exim drops privileges sanely, various checks such as -be aren't a
757 security problem, as long as you trust local users with access to their
758 own account. When invoked by services which pass untrusted data to
759 Exim, this might be an issue. Set this option in main configuration
760 AND make fixes to the calling application, such as using `--` to stop
761 processing options.
762
a5ffa9b4
JH
763JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
764 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
765 responses to those, into a single TLS record each way (this usually means
766 a single packet). As a side issue, smtp_enforce_sync now works on TLS
767 connections.
925ac8e4 768
6600985a
PP
769PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
770 affects you only if you're dancing at the edge of the param size limits.
771 If you are, and this message makes sense to you, then: raise the
772 configured limit or use OpenSSL 1.1. Nothing we can do for older
773 versions.
774
ac4d558b
JH
775JH/14 For the "sock" variant of the malware scanner interface, accept an empty
776 cmdline element to get the documented default one. Previously it was
777 inaccessible.
778
e69636bc
JH
779JH/15 Fix a crash in the smtp transport caused when two hosts in succession
780 are unsuable for non-message-specific reasons - eg. connection timeout,
781 banner-time rejection.
782
a843a57e
JH
783JH/16 Fix logging of delivery remote port, when specified by router, under
784 callout/hold.
785
8e041ae0
PP
786PP/06 Repair manualroute's ability to take options in any order, even if one
787 is the name of a transport.
833c70bc
PP
788 Fixes bug 2140.
789
35a04365
HSHR
790HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
791
4226691b
JH
792JH/17 Change the list-building routines interface to use the expanding-string
793 triplet model, for better allocation and copying behaviour.
794
d185889f
JH
795JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
796 Previously it was constructed the first time a possibly-matching string
797 was met in the configuration file input during startup; now it is done
798 during compilation.
799
0a6c178c
JH
800JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
801 compatible one, to avoid the (poorly documented) possibility of a config
802 file in the working directory redirecting the DB files, possibly correpting
02745400 803 some existing file. CVE-2017-10140 assigned for BDB.
0a6c178c 804
fae8970d
JH
805JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
806 cache-hot. Previously, although the result was properly cached, the
807 initial verify call returned a defer.
808
ad1a76fe 809JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
14de8063
JH
810 the main verify for receipient in uncached-mode.
811
ad1a76fe
JH
812JH/22 Retire historical build files to an "unsupported" subdir. These are
813 defined as "ones for which we have no current evidence of testing".
814
135e9496
JH
815JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
816 if present. Previously it was ignored.
817
f2ed27cf
JH
818JH/24 Start using specified-initialisers in C structure init coding. This is
819 a C99 feature (it's 2017, so now considered safe).
820
7eb0e5d2
JH
821JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
822 if was a fixed-sized field and bitmask ops via macros; it is now more
823 extensible.
824
4f9f4be4
825PP/07 GitHub PR 56: Apply MariaDB build fix.
826 Patch provided by Jaroslav Škarvada.
827
dc4de9cc
PP
828PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
829 during Coverity cleanups [4.87 JH/47]
830 Diagnosis and fix provided by Michael Fischer v. Mollard.
831
ea18931d
JH
832JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
833 the right size to place the terminating semicolon on its own folded
834 line, the header hash was calculated to an incorrect value thanks to
835 the (relaxed) space the fold became.
836
0768462d 837HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
2cee425a
HSHR
838 and confused the parent.
839
848214f7
JH
840JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
841 which could crash as a result. This could lead to undeliverable messages.
842
9e0ed81f
JH
843JH/28 Logging: "next input sent too soon" now shows where input was truncated
844 for log purposes.
845
2540f2f8
JH
846JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
847 matters on fast-turnover and PID-randomising systems, which were getting
848 out-of-order delivery.
849
e5ab0ba9
JH
850JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
851 a possibly-overlapping copy. The symptom was that "Remote host closed
852 connection in response to HELO" was logged instead of the actual 4xx
853 error for the HELO.
854
e99a3a6c
JH
855JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
856 Previously only that bufferd was discarded, resulting in SYMTP command
857 desynchronisation.
858
18067c75
JH
859JH/32 DKIM: when a message has multiple signatures matching an identity given
860 in dkim_verify_signers, run the dkim acl once for each. Previously only
861 one run was done. Bug 2189.
862
72934ba7
JH
863JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
864 "panic the current process" to "deliberately defer". The panic log is
865 still written with the problem list name; the mail and reject logs now
866 get a temp-reject line for the message that was being handled, saying
867 something like "domains check lookup or other defer". The SMTP 451
868 message is still "Temporary local problem".
869
625667b6
JH
870JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
871 A crafted sequence of BDAT commands could result in in-use memory beeing
b488395f
JH
872 freed. CVE-2017-16943.
873
874HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
875 from SMTP input. Previously it was always done; now only done for DATA
876 and not BDAT commands. CVE-2017-16944.
625667b6 877
d21bf202
JH
878JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
879 to the message (such as an overlong header line). Previously this was
880 not done and we did not exit BDAT mode. Followon from the previous item
881 though a different problem.
882
acfc18c3 883
fd047340 884Exim version 4.89
acfc18c3 885-----------------
4c57a40e 886
9427e879 887JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
4c04137d 888 than -2003 did; needs libidn2 in addition to libidn.
fd047340 889
7b283890
JH
890JH/02 The path option on a pipe transport is now expanded before use.
891
4c57a40e
PP
892PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
893 Patch provided by "Björn", documentation fix added too.
894
5d036699
JH
895JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
896 missing a wire-to-host endian conversion.
897
f4630439
JH
898JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
899 close after a BDAT command line could be taken as a following command,
900 giving a synch failure. Fix by only checking for synch immediately
901 before acknowledging the chunk.
902
f988ce57
JS
903PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
904 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
905 macro. Patches provided by Josh Soref.
906
bd8fbe36
JH
907JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
908 Previously we did not; the RFC seems ambiguous and VRFY is not listed
909 by IANA as a service extension. However, John Klensin suggests that we
910 should.
911
912JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
b895f4b2
JH
913 the dkim code may be unix-mode line endings rather than smtp wire-format
914 CRLF, so prepend a CR to any bare LF.
fd047340 915
bd8fbe36 916JH/07 Rationalise the coding for callout smtp conversations and transport ones.
902fbd69
JH
917 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
918
bd8fbe36
JH
919JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
920 the first were themselves being wrongly included in the feed into dkim
921 processing; with most chunk sizes in use this resulted in an incorrect
922 body hash calculated value.
923
eea19017
JH
924JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
925 DKIM signature block, for verification. Although advised against by
926 standards it is specifically not ruled illegal.
927
44e6651b
JH
928JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
929
930JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
931 missing a body hash (the bh= tag).
932
933JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
934 It seems that HAProxy sends the Proxy Protocol information in clear and
935 only then does a TLS startup, so do the same.
936
937JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
938 TCP connections (such as for Spamd) unless the daemon successfully set
939 Fast Open mode on its listening sockets. This fixes breakage seen on
940 too-old kernels or those not configured for Fast Open, at the cost of
941 requiring both directions being enabled for TFO, and TFO never being used
942 by non-daemon-related Exim processes.
943
944JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
945 endings, at least on the first header line. Try to canonify any that get
946 past that check, despite the cost.
947
b6040544
JH
948JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
949 now limited to an arbitrary five deep, while parsing addresses with the
950 strip_excess_angle_brackets option enabled.
951
f700ea4d
PP
952PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
953 instead leave the unprompted TLS handshake in socket buffer for the
954 TLS library to consume.
955
da88acae
PP
956PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
957
f6ef9370
PP
958PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
959
90341c71
JH
960JH/16 Drop variables when they go out of scope. Memory management drops a whole
961 region in one operation, for speed, and this leaves assigned pointers
962 dangling. Add checks run only under the testsuite which checks all
963 variables at a store-reset and panics on a dangling pointer; add code
964 explicitly nulling out all the variables discovered. Fixes one known
965 bug: a transport crash, where a dangling pointer for $sending_ip_address
966 originally assigned in a verify callout, is re-used.
967
1ec2ab36
PP
968PP/06 Drop '.' from @INC in various Perl scripts.
969
970PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
971
972PP/08 Reduce a number of compilation warnings under clang; building with
973 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
974 should be warning-free.
975
8b2b9480
PP
976JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
977
978HS/01 Fix portability problems introduced by PP/08 for platforms where
979 realloc(NULL) is not equivalent to malloc() [SunOS et al].
980
d953610f
HSHR
981HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
982 chunk. This allows us to accept broken chunked messages. We need a more
983 general solution here.
984
7dc5f827
PP
985PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
986 already-broken messages in the queue.
987
4bb432cb
PP
988JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
989
3b1a84c8
PP
990JH/19 Fix reference counting bug in routing-generated-address tracking.
991
902fbd69 992
8d042305
JH
993Exim version 4.88
994-----------------
4c57a40e 995
9094b84b
JH
996JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
997 supports it and a size is available (ie. the sending peer gave us one).
8d042305 998
03d5892b
JH
999JH/02 The obsolete acl condition "demime" is removed (finally, after ten
1000 years of being deprecated). The replacements are the ACLs
1001 acl_smtp_mime and acl_not_smtp_mime.
1002
4b0fe319
JH
1003JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
1004 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
1005 or even an in-clear connection were permitted. Now, if the host lookup
1006 was dnssec and dane was requested then the host is only used if the
1007 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
1008 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
1009 if one fails this test.
1010 This means that a poorly-configured remote DNS will make it incommunicado;
1011 but it protects against a DNS-interception attack on it.
1012
789f8a4f
JH
1013JH/04 Bug 1810: make continued-use of an open smtp transport connection
1014 non-noisy when a race steals the message being considered.
1015
23bb6982 1016JH/05 If main configuration option tls_certificate is unset, generate a
f59aaaaa 1017 self-signed certificate for inbound TLS connections.
23bb6982 1018
0bd1b1ed 1019JH/06 Bug 165: hide more cases of password exposure - this time in expansions
f42deca9 1020 in rewrites and routers.
0bd1b1ed 1021
20b9a2dc
JH
1022JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
1023 and logged a warning sing 4.83; now they are a configuration file error.
1024
05392bbc
JH
1025JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
1026 (lacking @domain). Apply the same qualification processing as RCPT.
1027
1a6230a3
JH
1028JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
1029
cfab9d68
JH
1030JH/10 Support ${sha256:} applied to a string (as well as the previous
1031 certificate).
1032
98c82a3d
JH
1033JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
1034 a cutthrough deliver is pending, as we always want to make a connection.
1035 This also avoids re-routing the message when later placing the cutthrough
1036 connection after a verify cache hit.
1037 Do not update it with the verify result either.
1038
1039JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
1040 when routing results in more than one destination address.
1041
ae8386f0
JH
1042JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
1043 signing (which inhibits the cutthrough capability). Previously only
1044 the presence of an option was tested; now an expansion evaluating as
1045 empty is permissible (obviously it should depend only on data available
1046 when the cutthrough connection is made).
1047
0d9fa8c0
JH
1048JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
1049 the relevant preceding SMTP command did not note the pipelining mode.
1050
3581f321
JH
1051JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
1052 Previously they were not counted.
1053
ef3a1a30
JH
1054JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
1055 as one having no matching records. Previously we deferred the message
1056 that needed the lookup.
1057
4c04137d 1058JH/17 Fakereject: previously logged as a normal message arrival "<="; now
27b9e5f4
JH
1059 distinguished as "(=".
1060
1435d4b2
JH
1061JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
1062 for missing MX records. Previously it only worked for missing A records.
1063
eea0defe
JB
1064JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
1065
1066JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
1067 after the data-go-ahead and data-ack. Patch from Jason Betts.
860cdda2 1068
4c04137d 1069JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
72a201e2
TM
1070 even for a "none" policy. Patch from Tony Meyer.
1071
1c788856
JH
1072JH/22 Fix continued use of a connection for further deliveries. If a port was
1073 specified by a router, it must also match for the delivery to be
1074 compatible.
1075
e3b1f624
JH
1076JH/23 Bug 1874: fix continued use of a connection for further deliveries.
1077 When one of the recipients of a message was unsuitable for the connection
1078 (has no matching addresses), we lost track of needing to mark it
1079 deferred. As a result mail would be lost.
1080
a57ce043
JH
1081JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
1082
f59aaaaa 1083JH/25 Decoding ACL controls is now done using a binary search; the source code
2d009132
JH
1084 takes up less space and should be simpler to maintain. Merge the ACL
1085 condition decode tables also, with similar effect.
d7bed771 1086
d1f9fb42
JH
1087JH/26 Fix problem with one_time used on a redirect router which returned the
1088 parent address unchanged. A retry would see the parent address marked as
1089 delivered, so not attempt the (identical) child. As a result mail would
1090 be lost.
1091
92b0827a
JH
1092JH/27 Fix a possible security hole, wherein a process operating with the Exim
1093 UID can gain a root shell. Credit to http://www.halfdog.net/ for
1094 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
1095 itself :(
1096
ddf1b11a
JH
1097JH/28 Enable {spool,log} filesystem space and inode checks as default.
1098 Main config options check_{log,spool}_{inodes,space} are now
1099 100 inodes, 10MB unless set otherwise in the configuration.
1100
3cc3f762
JH
1101JH/29 Fix the connection_reject log selector to apply to the connect ACL.
1102 Previously it only applied to the main-section connection policy
1103 options.
1104
ae5afa61
JH
1105JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
1106
317e40ac
PP
1107PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
1108 by me. Added RFC7919 DH primes as an alternative.
1109
8b0fb68e
PP
1110PP/02 Unbreak build via pkg-config with new hash support when crypto headers
1111 are not in the system include path.
1112
ad7fc6eb 1113JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
f59aaaaa 1114 GnuTLS, when a session startup failed (eg because the client disconnected)
ad7fc6eb
JH
1115 Exim did stdio operations after fclose. This was exposed by a recent
1116 change which nulled out the file handle after the fclose.
ad7fc6eb 1117
ee5b1e28
JH
1118JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
1119 signed directly by the cert-signing cert, rather than an intermediate
1120 OCSP-signing cert. This is the model used by LetsEncrypt.
1121
5ddc9771
JH
1122JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
1123
8d73599f
JH
1124HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
1125 an incoming connection.
1126
446415f5
HSHR
1127HS/02 Bug 1802: Do not half-close the connection after sending a request
1128 to rspamd.
1129
8e53a4fc
HSHR
1130HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
1131 fallback to "prime256v1".
8d042305 1132
87cb4a16 1133JH/34 SECURITY: Use proper copy of DATA command in error message.
4c57a40e 1134 Could leak key material. Remotely exploitable. CVE-2016-9963.
87cb4a16
JH
1135
1136
0d9b78be
JH
1137Exim version 4.87
1138-----------------
4c57a40e 1139
82d14d6a
JH
1140JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
1141 and 3.4.4 - once the server is enabled to respond to an OCSP request
1142 it does even when not requested, resulting in a stapling non-aware
1143 client dropping the TLS connection.
0d9b78be 1144
6c6d6e48
TF
1145TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
1146 support variable-length bit vectors. No functional change.
1147
ac881e27
TF
1148TF/02 Improve the consistency of logging incoming and outgoing interfaces.
1149 The I= interface field on outgoing lines is now after the H= remote
1150 host field, same as incoming lines. There is a separate
1151 outgoing_interface log selector which allows you to disable the
1152 outgoing I= field.
1153
c8899c20
JH
1154JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
1155 If not running log_selector +smtp_connection the mainlog would be held
1156 open indefinitely after a "too many connections" event, including to a
1157 deleted file after a log rotate. Leave the per net connection logging
1158 leaving it open for efficiency as that will be quickly detected by the
1159 check on the next write.
1160
f1b81d81
HSHR
1161HS/01 Bug 1671: Fix post transport crash.
1162 Processing the wait-<transport> messages could crash the delivery
1163 process if the message IDs didn't exist for some reason. When
1164 using 'split_spool_directory=yes' the construction of the spool
1165 file name failed already, exposing the same netto behaviour.
1166
f38917cc
JH
1167JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
1168 mime_regex ACL conditions.
1169
895fbaf2
JH
1170JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
1171 to DSN fail messages (bounces): remote IP, remote greeting, remote response
1172 to HELO, local diagnostic string.
1173
805bb5c3
JH
1174JH/05 Downgrade message for a TLS-certificate-based authentication fail from
1175 log line to debug. Even when configured with a tls authenticator many
1176 client connections are expected to not authenticate in this way, so
1177 an authenticate fail is not an error.
1178
56c2a7be
HSHR
1179HS/02 Add the Exim version string to the process info. This way exiwhat
1180 gives some more detail about the running daemon.
1181
4c04137d 1182JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
14b3c5bc
JH
1183 matter for fast-change records such as DNSBLs.
1184
6f6dedcc
JH
1185JH/07 Bug 1678: Always record an interface option value, if set, as part of a
1186 retry record, even if constant. There may be multiple transports with
1187 different interface settings and the retry behaviour needs to be kept
1188 distinct.
1189
0f557e90
JH
1190JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
1191
1192JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
1193
ec0eb1a3
JH
1194JH/10 Bug 840: fix log_defer_output option of pipe transport
1195
41e93589
JH
1196JH/11 Bug 830: use same host for all RCPTS of a message, even under
1197 hosts_randomize. This matters a lot when combined with mua_wrapper.
1198
98b98887 1199JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
376d2ec0
JH
1200 ${quote_pgsql:<string>} operator.
1201
98b98887
JH
1202JH/13 Bug 1708: avoid misaligned access in cached lookup.
1203
858e91c2
JH
1204JH/14 Change header file name for freeradius-client. Relevant if compiling
1205 with Radius support; from the Gentoo tree and checked under Fedora.
1206
1207JH/15 Bug 1712: Introduce $prdr_requested flag variable
1208
6ff55e50
JH
1209JH/16 Bug 1714: Permit an empty string as expansion result for transport
1210 option transport_filter, meaning no filtering.
1211
3b957582
JB
1212JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
1213
23f3dc67
JH
1214JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
1215 defaults to "*" (all hosts). The variable is now available when not built
4c04137d 1216 with TLS, default unset, mainly to enable keeping the testsuite sane.
23f3dc67
JH
1217 If a server certificate is not supplied (via tls_certificate) an error is
1218 logged, and clients will find TLS connections fail on startup. Presumably
1219 they will retry in-clear.
1220 Packagers of Exim are strongly encouraged to create a server certificate
1221 at installation time.
1222
240c288f
JH
1223HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
1224 with the $config_file variable.
1225
5ef5dd52
JB
1226JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
1227 in transport context, after the attempt, and per-recipient. The latter type
1228 is per host attempted. The event data is the error message, and the errno
1229 information encodes the lookup type (A vs. MX) used for the (first) host,
4c04137d 1230 and the trailing two digits of the smtp 4xx response.
5ef5dd52 1231
e161710d
GF
1232GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
1233 to write to mainlog (or rejectlog, paniclog) in the window between file
1234 creation and permissions/ownership being changed. Particularly affects
1235 installations where exicyclog is run as root, rather than exim user;
1236 result is that the running daemon panics and dies.
1237
a159f203
JH
1238JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
1239
7f06582c
JH
1240JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
1241 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
1242 "pri" and "weight". Note that the previous implicit priority given by the
1243 list order is no longer honoured.
1244
4c04137d 1245JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
abe1010c
JH
1246 for DKIM processing.
1247
f0989ec0
JH
1248JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
1249 by defining SUPPORT_SOCKS.
74f150bf 1250
cee5f132
JH
1251JH/26 Move PROXY support from Experimental to mainline, enabled for a build
1252 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
e6d2a989
JH
1253 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
1254 variables are renamed to proxy_{local,external}_{address,port}.
cee5f132 1255
8c5d388a
JH
1256JH/27 Move Internationalisation support from Experimental to mainline, enabled
1257 for a build by defining SUPPORT_I18N
1258
2d8d625b
JH
1259JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
1260 of the query string, and make ${quote_redis:} do that quoting.
1261
0cbf2b82
JH
1262JH/29 Move Events support from Experimental to mainline, enabled by default
1263 and removable for a build by defining DISABLE_EVENT.
1264
f2f2c91b
JH
1265JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
1266
ce325893
JH
1267JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
1268 cached by the daemon.
1269
de78e2d5
JH
1270JH/32 Move Redis support from Experimental to mainline, enabled for a build
1271 by defining LOOKUP_REDIS. The libhiredis library is required.
1272
379ba7d0
JH
1273JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
1274 keys are given for lookup.
1275
f444c2c7
JH
1276JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
1277 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
07c73177
JH
1278 only supported when built with TLS support. The PolarSSL SHA routines
1279 are still used when the TLS library is too old for convenient support.
f444c2c7 1280
a57b6200
JH
1281JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
1282 openssl_options), for security. OpenSSL forces this from version 1.1.0
1283 server-side so match that on older versions.
1284
07c73177 1285JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
fa01e4f8 1286 allocation for $value could be released as the expansion processing
07c73177 1287 concluded, but leaving the global pointer active for it.
fa01e4f8 1288
4f6ae5c3
JH
1289JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
1290 and to use the domains and local_parts ACL conditions.
1291
1bc460a6
JH
1292JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
1293 incorrectly not doubled on cutthrough transmission, hence seen as a
1294 body-termination at the receiving system - resulting in truncated mails.
62ac2eb7 1295 Commonly the sender saw a TCP-level error, and retransmitted the message
1bc460a6
JH
1296 via the normal store-and-forward channel. This could result in duplicates
1297 received - but deduplicating mailstores were liable to retain only the
1298 initial truncated version.
1299
ab9152ff 1300JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
df3def24 1301
67e87fcf
JH
1302JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1303
ab9152ff
JH
1304JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1305 we're in there, support oversigning also; bug 1309.
1306
af483912
JH
1307JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1308
bc3c7bb7 1309HS/04 Add support for keep_environment and add_environment options.
df3def24 1310
13559da6
JH
1311JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1312 either intentional arithmetic overflow during PRNG, or testing config-
1313 induced overflows.
1314
59eaad2b
JH
1315JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1316 delivery resulted in actual delivery. Cancel cutthrough before DATA
1317 stage.
1318
f9334a28
JH
1319JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1320 rejects a recipient: pass the reject to the originator.
1321
dc8091e7
JH
1322JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1323 Many were false-positives and ignorable, but it's worth fixing the
1324 former class.
1325
dfe7d917
JH
1326JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1327 for the new environment-manipulation done at startup. Move the routines
1328 from being local to tls.c to being global via the os.c file.
1329
93cc2d6e
JH
1330JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1331 an extract embedded as result-arg for a map, the first arg for extract
1332 is unavailable so we cannot tell if this is a numbered or keyed
1333 extraction. Accept either.
1334
13559da6 1335
9c695f6d
JH
1336Exim version 4.86
1337-----------------
4c57a40e 1338
9c695f6d
JH
1339JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1340 expanded.
1341
506900af
JH
1342JH/02 The smtp transport option "multi_domain" is now expanded.
1343
ad07e9ad
JH
1344JH/03 The smtp transport now requests PRDR by default, if the server offers
1345 it.
1346
01a4a5c5 1347JH/04 Certificate name checking on server certificates, when exim is a client,
b3ef41c9 1348 is now done by default. The transport option tls_verify_cert_hostnames
01a4a5c5
JH
1349 can be used to disable this per-host. The build option
1350 EXPERIMENTAL_CERTNAMES is withdrawn.
1351
cb1d7830 1352JH/05 The value of the tls_verify_certificates smtp transport and main options
0e0f3f56 1353 default to the word "system" to access the system default CA bundle.
cb1d7830
JH
1354 For GnuTLS, only version 3.0.20 or later.
1355
610ff438 1356JH/06 Verification of the server certificate for a TLS connection is now tried
6d580f19
JH
1357 (but not required) by default. The verification status is now logged by
1358 default, for both outbound TLS and client-certificate supplying inbound
1359 TLS connections
610ff438 1360
f926e272
JH
1361JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1362 sites use this now.
1363
50dc7409
JH
1364JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1365 Status Notification (bounce) messages are now MIME format per RFC 3464.
1366 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1367 under the control of the dsn_advertise_hosts option, and routers may
1368 have a dsn_lasthop option.
1369
0f0c8159
JH
1370JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1371 default, modifiable by a malware= option. The list separator for
23763898 1372 the options can now be changed in the usual way. Bug 68.
4e71661f 1373
1ad6489e
JH
1374JH/10 The smtp_receive_timeout main option is now expanded before use.
1375
aeaf5db3
JH
1376JH/11 The incoming_interface log option now also enables logging of the
1377 local interface on delivery outgoing connections.
1378
5032d1cf
JH
1379JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1380 if the interface and destination host and port all match.
1381
7e8360e6
JH
1382JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1383 /defer_ok option.
1384
c5f280e2
AL
1385JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1386 Patch from Andrew Lewis.
1387
fd4d8871 1388JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
dc7b3d36 1389 now supports optional time-restrictions, weighting, and priority
fd4d8871
R
1390 modifiers per server. Patch originally by <rommer@active.by>.
1391
1392JH/16 The spamd_address main option now supports a mixed list of local
2aad5761
JH
1393 and remote servers. Remote servers can be IPv6 addresses, and
1394 specify a port-range.
fd4d8871 1395
23763898
JH
1396JH/17 Bug 68: The spamd_address main option now supports an optional
1397 timeout value per server.
1398
2ad78978
JH
1399JH/18 Bug 1581: Router and transport options headers_add/remove can
1400 now have the list separator specified.
1401
8a512ed5 1402JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
cfab9d68 1403 option values.
8a512ed5 1404
82c0c8ea 1405JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
f69979cf
JH
1406 under OpenSSL.
1407
cc00f4af
JH
1408JH/21 Support for the A6 type of dns record is withdrawn.
1409
82c0c8ea
JH
1410JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1411 rather than the verbs used.
1412
b980ed83
JH
1413JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1414 from 255 to 1024 chars.
1415
6c9ed72e
JH
1416JH/24 Verification callouts now attempt to use TLS by default.
1417
cfab9d68 1418HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
99c1bb4e 1419 are generic router options now. The defaults didn't change.
50dc7409 1420
f846c8f5
JH
1421JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1422 Original patch from Alexander Shikoff, worked over by JH.
1423
fd4c285c
HSHR
1424HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1425 files if ZCAT_COMMAND is not executable.
1426
4c04137d 1427JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
fd7f7910 1428
d2a2c69b
JH
1429JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1430
8241d8dd
JH
1431JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1432 Normally benign, it bites when the pair was led to by a CNAME;
4c04137d 1433 modern usage is to not canonicalize the domain to a CNAME target
8241d8dd
JH
1434 (and we were inconsistent anyway for A-only vs AAAA+A).
1435
1f12df4d
JH
1436JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1437
1f155f8e
JH
1438JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1439 when evaluating $sender_host_dnssec.
1440
1705dd20
JH
1441JH/31 Check the HELO verification lookup for DNSSEC, adding new
1442 $sender_helo_dnssec variable.
1443
038597d2
PP
1444JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1445
474f71bf
JH
1446JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1447
7137ca4b
JH
1448JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1449
dcb1095c
JH
1450JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1451 documented as working, but never had. Support all but $spam_report.
1452
2f460950
JH
1453JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1454 added for tls authenticator.
1455
2f680c0c
HSHR
1456HS/03 Add perl_taintmode main config option
1457
9c695f6d 1458
e449c3b0
TL
1459Exim version 4.85
1460-----------------
4c57a40e 1461
e449c3b0
TL
1462TL/01 When running the test suite, the README says that variables such as
1463 no_msglog_check are global and can be placed anywhere in a specific
1464 test's script, however it was observed that placement needed to be near
1465 the beginning for it to behave that way. Changed the runtest perl
1466 script to read through the entire script once to detect and set these
1467 variables, reset to the beginning of the script, and then run through
1468 the script parsing/test process like normal.
1469
ac20058f
TL
1470TL/02 The BSD's have an arc4random API. One of the functions to induce
1471 adding randomness was arc4random_stir(), but it has been removed in
1472 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1473 function when detected.
1474
a9b8ec8b
JH
1475JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1476 cause callback expansion.
1477
6286d7c4
TL
1478TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1479 syntax errors in an expansion can be treated as a string instead of
1480 logging or causing an error, due to the internal use of bool_lax
1481 instead of bool when processing it.
1482
0f06b4f2 1483JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
d567a64d
JH
1484 server certificates when making smtp deliveries.
1485
be36e572
JH
1486JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1487
ac4ef9bd
JH
1488JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1489
0eb51736
TL
1490TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1491
c713ca4b
TL
1492TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1493 Merged patch from Sebastian Wiedenroth.
e449c3b0 1494
bd21a787
WB
1495JH/05 Fix results-pipe from transport process. Several recipients, combined
1496 with certificate use, exposed issues where response data items split
1497 over buffer boundaries were not parsed properly. This eventually
1498 resulted in duplicates being sent. This issue only became common enough
4c04137d 1499 to notice due to the introduction of connection certificate information,
bd21a787
WB
1500 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1501
8bc732e8
JH
1502JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1503 size buffer was used, resulting in syntax errors when an expansion
1504 exceeded it.
1505
a7fec7a7
JH
1506JH/07 Add support for directories of certificates when compiled with a GnuTLS
1507 version 3.3.6 or later.
1508
4c04137d 1509JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
774ef2d7
JH
1510 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1511 both become "event_action", the variables become $event_name, $event_data
aec45841 1512 and $event_defer_errno. There is a new variable $verify_mode, usable in
723fe533
JH
1513 routers, transports and related events. The tls:cert event is now also
1514 raised for inbound connections, if the main configuration event_action
1515 option is defined.
774ef2d7 1516
eca4debb
TL
1517TL/06 In test suite, disable OCSP for old versions of openssl which contained
1518 early OCSP support, but no stapling (appears to be less than 1.0.0).
1519
8d692470
JH
1520JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1521 server certificate names available under the smtp transport option
1522 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1523 matches.
1524
e9477a08
JH
1525JH/10 Time-related extraction expansions from certificates now use the main
1526 option "timezone" setting for output formatting, and are consistent
1527 between OpenSSL and GnuTLS compilations. Bug 1541.
1528
ad4c5ff9
JH
1529JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1530 encoded parameter in the incoming message. Bug 1558.
8dea5edf
JH
1531
1532JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1533 include certificate info, eximon was claiming there were spoolfile
1534 syntax errors.
1535
3394b36a 1536JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
8dea5edf
JH
1537
1538JH/14 Log delivery-related information more consistently, using the sequence
1539 "H=<name> [<ip>]" wherever possible.
1540
3394b36a
TL
1541TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1542 are problematic for Debian distribution, omit them from the release
1543 tarball.
1544
ad4c5ff9
JH
1545JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1546
4c04137d 1547JH/16 Fix string representation of time values on 64bit time_t architectures.
ad4c5ff9
JH
1548 Bug 1561.
1549
1550JH/17 Fix a null-indirection in certextract expansions when a nondefault
1551 output list separator was used.
1552
8bc732e8 1553
1f0ebb98
TL
1554Exim version 4.84
1555-----------------
09728d20
TL
1556TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1557 checkers that were complaining about end of non-void function with no
1558 return.
1f0ebb98 1559
a612424f 1560JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
4c04137d 1561 This was a regression introduced in 4.83 by another bugfix.
a612424f
JH
1562
1563JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1564
1565TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
a9b8ec8b 1566 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
a612424f 1567
1f0ebb98 1568
c0e56233
TF
1569Exim version 4.83
1570-----------------
1571
1572TF/01 Correctly close the server side of TLS when forking for delivery.
1573
1574 When a message was received over SMTP with TLS, Exim failed to clear up
1575 the incoming connection properly after forking off the child process to
1576 deliver the message. In some situations the subsequent outgoing
1577 delivery connection happened to have the same fd number as the incoming
1578 connection previously had. Exim would try to use TLS and fail, logging
1579 a "Bad file descriptor" error.
1580
7245734e
TF
1581TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1582 utilities have not been installed.
1583
fd5dad68
JH
1584JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1585 temporary space as the ACL may create new global variables.
1586
5428a946
TL
1587TL/01 LDAP support uses per connection or global context settings, depending
1588 upon the detected version of the libraries at build time.
1589
a3c86431
TL
1590TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1591 to extract and use the src ip:port in logging and expansions as if it
8ded8589
TL
1592 were a direct connection from the outside internet. PPv2 support was
1593 updated based on HAProxy spec change in May 2014.
a3c86431 1594
aa26e137
JH
1595JH/02 Add ${listextract {number}{list}{success}{fail}}.
1596
5a1b8443
WB
1597TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1598 Properly escape header and check for NULL return.
1599
72c9e342
PP
1600PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1601 not dns_use_dnssec.
1602
76f44207
WB
1603JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1604
770747fd
MFM
1605TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1606 characters in header names, implemented as a verify condition.
1607 Contributed by Michael Fischer v. Mollard.
1608
8ddef691 1609TL/05 Rename SPF condition results err_perm and err_temp to standardized
982650ec
TL
1610 results permerror and temperror. Previous values are deprecated but
1611 still accepted. In a future release, err_perm and err_temp will be
1612 completely removed, which will be a backward incompatibility if the
1613 ACL tests for either of these two old results. Patch contributed by
8ddef691 1614 user bes-internal on the mailing list.
c0e56233 1615
b9c2e32f
AR
1616JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1617
e45a1c37
JH
1618JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1619 selectors, in both main and reject logs.
1620
67d81c10
JH
1621JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1622 failed delivery.
1623
b1f8e4f8
JH
1624JH/07 Add malware type "sock" for talking to simple daemon.
1625
511a6c14 1626JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
511a6c14
JH
1627
1628JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1629 routers/transports under cutthrough routing.
214042d2 1630
51c7471d
JH
1631JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1632 numbers. Touch up "bool" conditional to keep the same definition.
1633
3695be34
TL
1634TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1635
1e06383a
TL
1636JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1637
76146973
JH
1638JH/12 Expand items in router/transport headers_add or headers_remove lists
1639 individually rather than the list as a whole. Bug 1452.
1640
1641 Required for reasonable handling of multiple headers_ options when
1642 they may be empty; requires that headers_remove items with embedded
1643 colons must have them doubled (or the list-separator changed).
1644
8c8b8274
TL
1645TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1646 view the policy declared in the DMARC record. Currently, $dmarc_status
1647 is a combined value of both the record presence and the result of the
1648 analysis.
b1f8e4f8 1649
35aba663
JH
1650JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1651
8c51eead 1652JH/14 New options dnssec_request_domains, dnssec_require_domains on the
578897ea
JH
1653 dnslookup router and the smtp transport (applying to the forward
1654 lookup).
8c51eead 1655
deae092e
HS
1656TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1657 of ldap servers used for a specific lookup. Patch provided by Heiko
1658 Schlichting.
35aba663 1659
fd3b6a4a 1660JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
4e0983dc 1661 New variable $lookup_dnssec_authenticated for observability.
fd3b6a4a 1662
8d91c6dc
LT
1663TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1664 Patch submitted by Lars Timman.
1665
2b4a568d
JH
1666JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1667
d2af03f4
HS
1668TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1669 Requires trusted mode and valid format message id, aborts otherwise.
1670 Patch contributed by Heiko Schlichting.
1671
9d1c15ef
JH
1672JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1673 certextract with support for various fields. Bug 1358.
1674
44662487
JH
1675JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1676 is requested by default, modifiable by smtp transport option
6a8a60e0
JH
1677 hosts_request_ocsp.
1678
ed3bba5f 1679JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
6a8a60e0 1680 operate on certificate variables to give certificate fingerprints
9ef9101c 1681 Also new ${sha256:cert_variable}.
44662487 1682
8ccd00b1
JH
1683JH/23 The PRDR feature is moved from being Experimental into the mainline.
1684
8ded8589
TL
1685TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1686 Christian Aistleitner.
1687
f2de3a33
JH
1688JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1689
6eb02f88
TL
1690TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1691 file. Patch from Wolfgang Breyha.
1692
00bff6f6
JH
1693JH/25 Expand the coverage of the delivery $host and $host_address to
1694 client authenticators run in verify callout. Bug 1476.
1695
071c51f7
JH
1696JH/26 Port service names are now accepted for tls_on_connect_ports, to
1697 align with daemon_smtp_ports. Bug 72.
1698
a6d4c44e
TF
1699TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1700 support and error reporting did not work properly.
1701
3ae173e7
ACK
1702TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1703 and is readable. Patch from Andrew Colin Kissa.
1704
c13d09b8
TL
1705TL/14 Enhance documentation of ${run expansion and how it parses the
1706 commandline after expansion, particularly in the case when an
1707 unquoted variable expansion results in an empty value.
1708
0df4ab80
JH
1709JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1710
66be95e0
PP
1711PP/02 Fix internal collision of T_APL on systems which support RFC3123
1712 by renaming away from it. Addresses GH issue 15, reported by
1713 Jasper Wallace.
1714
1bd0d12b
JH
1715JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1716
0de7239e
TL
1717TL/15 SECURITY: prevent double expansion in math comparison functions
1718 (can expand unsanitized data). Not remotely exploitable.
1719 CVE-2014-2972
1720
fd3b6a4a 1721
2c422e6f 1722Exim version 4.82
98a90c36
PP
1723-----------------
1724
1725PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1726
12f69989
PP
1727PP/02 Make -n do something, by making it not do something.
1728 When combined with -bP, the name of an option is not output.
1729
54c90be1
PP
1730PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1731 by GnuTLS.
1732
1f4a55da
PP
1733PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1734 $sender_host_name and config options to manage this, and basic check
1735 routines.
1736
13363eba 1737PP/05 DSCP support for outbound connections and control modifier for inbound.
36a3ae5f 1738
66645890 1739PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
e402235f
PP
1740 (Only plugin which currently uses this is kerberos4, which nobody should
1741 be using, but we should make it available and other future plugins might
1742 conceivably use it, even though it would break NAT; stuff *should* be
1743 using channel bindings instead).
66645890 1744
a3fb9793 1745PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
f4ee74ac
PP
1746 name; added for Sendmail compatibility; requires admin caller.
1747 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1748 just ignore it); requires trusted caller.
a3fb9793 1749 Also parse but ignore: -Ac -Am -X<logfile>
f4ee74ac 1750 Bugzilla 1117.
a3fb9793 1751
d27f98fe 1752TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
98a90c36 1753
6822b909
TL
1754TL/02 Add +smtp_confirmation as a default logging option.
1755
e7568d51
TL
1756TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1757 Patch by Magnus Holmgren from 2007-02-20.
1758
ae0e32ee 1759TL/04 Bugzilla 1281 - Spec typo.
ca0ff207 1760 Bugzilla 1283 - Spec typo.
97f42f10 1761 Bugzilla 1290 - Spec grammar fixes.
ca0ff207
TL
1762
1763TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
ae0e32ee 1764
e2658fff
TL
1765TL/06 Add Experimental DMARC support using libopendmarc libraries.
1766
83712b39
TL
1767TL/07 Fix an out of order global option causing a segfault. Reported to dev
1768 mailing list by by Dmitry Isaikin.
1769
976b7e9f
JH
1770JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1771
be4a1376
JH
1772JH/02 Support "G" suffix to numbers in ${if comparisons.
1773
ec4b68e5
PP
1774PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1775
d7148a07
NM
1776NM/01 Bugzilla 1197 - Spec typo
1777 Bugzilla 1196 - Spec examples corrections
ec4b68e5 1778
585121e2 1779JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
ec4b68e5 1780
2519e60d
TL
1781PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1782 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1783 function.
a5f239e4 1784
13d08c90
PP
1785PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1786 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1787
bef3ea7f
JH
1788JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1789 "acl {{name}{arg}...}", and optional args on acl condition
1790 "acl = name arg..."
a5f239e4 1791
846726c5
JH
1792JH/05 Permit multiple router/transport headers_add/remove lines.
1793
3a796370
JH
1794JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1795
ea722490 1796JH/07 Avoid using a waiting database for a single-message-only transport.
8b260705
PP
1797 Performance patch from Paul Fisher. Bugzilla 1262.
1798
b1b05573
JH
1799JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1800 Bugzilla 884.
1801
362145b5
JH
1802JH/09 Add $headers_added variable, with content from use of ACL modifier
1803 add_header (but not yet added to the message). Bugzilla 199.
1804
3c0a92dc
JH
1805JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1806 Pulled from Bugzilla 817 by Wolfgang Breyha.
1807
6d7c6175
PP
1808PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1809 CVE-2012-5671
e78e6ecf 1810 (nb: this is the same fix as in Exim 4.80.1)
6d7c6175 1811
6f123593
JH
1812JH/11 Add A= logging on delivery lines, and a client_set_id option on
1813 authenticators.
1814
c8e2fc1e
JH
1815JH/12 Add optional authenticated_sender logging to A= and a log_selector
1816 for control.
1817
005ac57f
PP
1818PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1819
3f1df0e3
PP
1820PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1821 advertise SMTP AUTH mechanism to us, instead of a generic
1822 protocol violation error. Also, make Exim more robust to bad
1823 data from the Dovecot auth socket.
1824
67bd1ab3
TF
1825TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1826
1827 When a queue runner is handling a message, Exim first routes the
1828 recipient addresses, during which it prunes them based on the retry
1829 hints database. After that it attempts to deliver the message to
1830 any remaining recipients. It then updates the hints database using
1831 the retry rules.
1832
1833 So if a recipient address works intermittently, it can get repeatedly
1834 deferred at routing time. The retry hints record remains fresh so the
1835 address never reaches the final cutoff time.
1836
1837 This is a fairly common occurrence when a user is bumping up against
1838 their storage quota. Exim had some logic in its local delivery code
1839 to deal with this. However it did not apply to per-recipient defers
1840 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1841
1ddeb334
TF
1842 This change adds a proper retry rule check during routing so that the
1843 final cutoff time is checked against the message's age. We only do
1844 this check if there is an address retry record and there is not a
1845 domain retry record; this implies that previous attempts to handle
1846 the address had the retry_use_local_parts option turned on. We use
1847 this as an approximation for the destination being like a local
1848 delivery, as in LMTP.
67bd1ab3
TF
1849
1850 I suspect this new check makes the old local delivery cutoff check
1851 redundant, but I have not verified this so I left the code in place.
1852
326cdc37
TF
1853TF/02 Correct gecos expansion when From: is a prefix of the username.
1854
1855 Test 0254 submits a message to Exim with the header
1856
1857 Resent-From: f
1858
1859 When I ran the test suite under the user fanf2, Exim expanded
1860 the header to contain my full name, whereas it should have added
1861 a Resent-Sender: header. It erroneously treats any prefix of the
1862 username as equal to the username.
1863
1864 This change corrects that bug.
1865
f62514b3
GF
1866GF/01 DCC debug and logging tidyup
1867 Error conditions log to paniclog rather than rejectlog.
1868 Debug lines prefixed by "DCC: " to remove any ambiguity.
1869
eb505532
TF
1870TF/03 Avoid unnecessary rebuilds of lookup-related code.
1871
14c7b357
PP
1872PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1873 Bug spotted by Jeremy Harris; was flawed since initial commit.
1874 Would have resulted in OCSP responses post-SNI triggering an Exim
1875 NULL dereference and crash.
1876
94eaf700
PP
1877JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1878
6f5a440a
PP
1879PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1880 Bug detection, analysis and fix by Samuel Thibault.
1881 Bugzilla 1331, Debian bug #698092.
1882
514ee161
SC
1883SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1884
fd98a5c6
JH
1885JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1886 Server implementation by Todd Lyons, client by JH.
1887 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1888 config variable "prdr_enable" controls whether the server
1889 advertises the facility. If the client requests PRDR a new
1890 acl_data_smtp_prdr ACL is called once for each recipient, after
1891 the body content is received and before the acl_smtp_data ACL.
4c04137d 1892 The client is controlled by both of: a hosts_try_prdr option
fd98a5c6
JH
1893 on the smtp transport, and the server advertisement.
1894 Default client logging of deliveries and rejections involving
1895 PRDR are flagged with the string "PRDR".
1896
035c7f1e
PP
1897PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1898 fclose(). Diagnosis by Todd Lyons.
1899
ff284120
PP
1900PP/17 Update configure.default to handle IPv6 localhost better.
1901 Patch by Alain Williams (plus minor tweaks).
1902 Bugzilla 880.
1903
26e72755
PP
1904PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1905 This is now consistent with GnuTLS, and is now documented: the
1906 previous undocumented portable approach to treating the option as
1907 unset was to force an expansion failure. That still works, and
1908 an empty string is now equivalent.
1909
0fbd9bff
PP
1910PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1911 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1912 not performing validation itself.
1913
700d22f3
PP
1914PP/20 Added force_command boolean option to pipe transport.
1915 Patch from Nick Koston, of cPanel Inc.
1916
fcc8e047
JH
1917JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1918 Bugzilla 321, 823.
1919
4c04137d 1920TF/04 Added udpsend ACL modifier and hexquote expansion operator
7142daca 1921
8c020188
PP
1922PP/21 Fix eximon continuous updating with timestamped log-files.
1923 Broken in a format-string cleanup in 4.80, missed when I repaired the
1924 other false fix of the same issue.
1925 Report and fix from Heiko Schlichting.
1926 Bugzilla 1363.
1927
d13cdd30
PP
1928PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1929 Report from Prashanth Katuri.
1930
e2fbf4a2
PP
1931PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1932 It's SecureTransport, so affects any MacOS clients which use the
1933 system-integrated TLS libraries, including email clients.
1934
f4c1088b
PP
1935PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1936 using a MIME ACL for non-SMTP local injection.
1937 Report and assistance in diagnosis by Warren Baker.
1938
c5c2182f
PP
1939TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1940
73431ca9
JH
1941JH/16 Fix comparisons for 64b. Bugzilla 1385.
1942
2d07a215
TL
1943TL/09 Add expansion variable $authenticated_fail_id to keep track of
1944 last id that failed so it may be referenced in subsequent ACL's.
1945
a30a8861
TL
1946TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1947 Alexander Miroch.
1948
33382dd9
TL
1949TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1950 ldap library initialization, allowing self-signed CA's to be
1951 used. Also properly sets require_cert option later in code by
1952 using NULL (global ldap config) instead of ldap handle (per
1953 session). Bug diagnosis and testing by alxgomz.
6d7c6175 1954
046172e6
TL
1955TL/12 Enhanced documentation in the ratelimit.pl script provided in
1956 the src/util/ subdirectory.
1957
581d7bee 1958TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1a7b746d 1959 renamed to Transport Post Delivery Action by Jeremy Harris, as
9bdd29ad
TL
1960 EXPERIMENTAL_TPDA.
1961
1962TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1963 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1964 redis_servers = needs to be configured which will be used by the redis
1965 lookup. Patch from Warren Baker, of The Packet Hub.
1966
237b2cf2
TL
1967TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1968
9fc5a352
TL
1969TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1970 hostname or reverse DNS when processing a host list. Used suggestions
1971 from multiple comments on this bug.
1a7b746d 1972
b10e4ec2
TL
1973TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1974
e2cebd74
TL
1975TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1976 Missed a few lines, added it to make the runtest require no keyboard
1977 interaction.
1978
1979TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1980 contains upper case chars. Make router use caseful_local_part.
1981
2519e60d
TL
1982TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1983 support when GnuTLS has been built with p11-kit.
1984
e78e6ecf 1985
4263f395
PP
1986Exim version 4.80.1
1987-------------------
1988
1989PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1990 CVE-2012-5671
2c422e6f 1991 This, or similar/improved, will also be change PP/11 of 4.82.
3c0a92dc 1992
ea722490 1993
b1770b6e 1994Exim version 4.80
0599f9cf
PP
1995-----------------
1996
1997PP/01 Handle short writes when writing local log-files.
1998 In practice, only affects FreeBSD (8 onwards).
1999 Bugzilla 1053, with thanks to Dmitry Isaikin.
2000
23c7e742
NM
2001NM/01 Bugzilla 949 - Documentation tweak
2002
b322aac8
NM
2003NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
2004 improved.
2005
4a891427
NM
2006NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
2007
c1e794ba 2008PP/02 Implemented gsasl authenticator.
b322aac8 2009
97753960
PP
2010PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
2011
2012PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
2013 `pkg-config foo` for cflags/libs.
2014
df6303fa
PP
2015PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
2016 with rest of GSASL and with heimdal_gssapi.
2017
7e6a8985
PP
2018PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
2019 `pkg-config foo` for cflags/libs for the TLS implementation.
2020
f1e05cc7 2021PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
20aa9dbd
PP
2022 properties get this fed in as external SSF. A number of robustness
2023 and debugging improvements to the cyrus_sasl authenticator.
b322aac8 2024
4c287009
PP
2025PP/08 cyrus_sasl server now expands the server_realm option.
2026
b98bb9ac
PP
2027PP/09 Bugzilla 1214 - Log authentication information in reject log.
2028 Patch by Jeremy Harris.
2029
4a6a987a
PP
2030PP/10 Added dbmjz lookup type.
2031
c45dd180 2032PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
c7955b11 2033
7db8d074
PP
2034PP/12 MAIL args handles TAB as well as SP, for better interop with
2035 non-compliant senders.
2036 Analysis and variant patch by Todd Lyons.
2037
eae0036b 2038NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
cfab9d68 2039 Bug report from Lars Müller <lars@samba.org> (via SUSE),
e0df1c83
DM
2040 Patch from Dirk Mueller <dmueller@suse.com>
2041
dec5017e
PP
2042PP/13 tls_peerdn now print-escaped for spool files.
2043 Observed some $tls_peerdn in wild which contained \n, which resulted
2044 in spool file corruption.
2045
c80c5570
PP
2046PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
2047 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
2048 or write after TLS renegotiation, which otherwise led to messages
2049 "Got SSL error 2".
2050
076b11e2
PP
2051TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
2052 as a tracking header (ie: a signed header comes before the signature).
2053 Patch from Wolfgang Breyha.
2054
5407bfff
JH
2055JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
2056 comma-sep list; embedded commas doubled.
2057
9e45c72b
PP
2058JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
2059
e74376d8
PP
2060PP/15 LDAP: Check for errors of TLS initialisation, to give correct
2061 diagnostics.
2062 Report and patch from Dmitry Banschikov.
2063
4c04137d 2064PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
da3ad30d
PP
2065 Removed SSL_clear() after SSL_new() which led to protocol negotiation
2066 failures. We appear to now support TLS1.1+ with Exim.
2067
7be682ca
PP
2068PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
2069 lets Exim select keys and certificates based upon TLS SNI from client.
3f0945ff
PP
2070 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
2071 before an outbound SMTP session. New log_selector, +tls_sni.
7be682ca 2072
ef840681
PP
2073PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
2074 NULL dereference. Report and patch from Alun Jones.
2075
5bfb4cdf
PP
2076PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
2077 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
2078 Not seeing resolver debug output on NetBSD, but suspect this is a
2079 resolver implementation change.
2080
c6e95d22
PP
2081PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
2082 Left warnings. Added "eximon gdb" invocation mode.
2083
9cbad13b
PP
2084PP/21 Defaulting "accept_8bitmime" to true, not false.
2085
9ee44efb
PP
2086PP/22 Added -bw for inetd wait mode support.
2087
6a6084f8
PP
2088PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
2089 locate the relevant includes and libraries. Made this the default.
2090
12dd53c7
PP
2091PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
2092 Bugzilla 1246, report and most of solution from Tomasz Kusy.
2093
9e45c72b 2094JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
97d17305
JH
2095 This may cause build issues on older platforms.
2096
17c76198
PP
2097PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
2098 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
2099 gnutls_require_mac & gnutls_require_protocols (no longer supported).
2100 Added SNI support via GnuTLS too.
af3498d6 2101 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
17c76198 2102
53947857 2103PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
3f7eeb86 2104
eae0036b 2105PP/27 Applied dnsdb SPF support patch from Janne Snabb.
8ee4b30e
PP
2106 Applied second patch from Janne, implementing suggestion to default
2107 multiple-strings-in-record handling to match SPF spec.
eae0036b 2108
9e45c72b 2109JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
2605c55b 2110
7390e768
PP
2111PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
2112 read-only, out of scope).
2113 Patch from Wolfgang Breyha, report from Stuart Northfield.
2114
08488c86
PP
2115PP/29 Fix three issues highlighted by clang analyser static analysis.
2116 Only crash-plausible issue would require the Cambridge-specific
2117 iplookup router and a misconfiguration.
2118 Report from Marcin Mirosław.
2119
6475bd82
PP
2120PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
2121
81f91683
PP
2122PP/31 %D in printf continues to cause issues (-Wformat=security), so for
2123 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
2124 As part of this, removing so much warning spew let me fix some minor
2125 real issues in debug logging.
2126
5779e6aa
PP
2127PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
2128 assignment on my part. Fixed.
2129
3375e053
PP
2130PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
2131 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
2132 Janne Snabb (who went above and beyond: thank you).
2133
2134PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
2135 string otherwise requires a connection and a bunch more work and it's
78e0c7a3
PP
2136 relatively easy to get wrong. Should also expose TLS library linkage
2137 problems.
3375e053 2138
9d26b8c0
PP
2139PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
2140 64-bit ${eval} (JH/03).
2141
57eb9e91 2142PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
b87a6e0e
PP
2143 GNU libc to support some of the 64-bit stuff, should not lead to
2144 conflicts. Defined before os.h is pulled in, so if a given platform
2145 needs to override this, it can.
2146
16880d1a
PP
2147PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
2148 protection layer was required, which is not implemented.
2149 Bugzilla 1254, patch from Wolfgang Breyha.
2150
a799883d
PP
2151PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
2152 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
2153 tls_dhparam take prime identifiers. Also unbreak combination of
2154 OpenSSL+DH_params+TLSSNI.
2155
3ecab157 2156PP/39 Disable SSLv2 by default in OpenSSL support.
f0f5a555 2157
0599f9cf 2158
867fcbf5
PP
2159Exim version 4.77
2160-----------------
2161
2162PP/01 Solaris build fix for Oracle's LDAP libraries.
2163 Bugzilla 1109, patch from Stephen Usher.
2164
f1a29782
TF
2165TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
2166
ab42bd23
TK
2167TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
2168 whitespace trailer
867fcbf5 2169
0ca0cf52
TF
2170TF/02 Fix a couple more cases where we did not log the error message
2171 when unlink() failed. See also change 4.74-TF/03.
2172
921b12ca
TF
2173TF/03 Make the exiwhat support code safe for signals. Previously Exim might
2174 lock up or crash if it happened to be inside a call to libc when it
2175 got a SIGUSR1 from exiwhat.
2176
2177 The SIGUSR1 handler appends the current process status to the process
2178 log which is later printed by exiwhat. It used to use the general
2179 purpose logging code to do this, but several functions it calls are
2180 not safe for signals.
2181
2182 The new output code in the SIGUSR1 handler is specific to the process
2183 log, and simple enough that it's easy to inspect for signal safety.
2184 Removing some special cases also simplifies the general logging code.
2185 Removing the spurious timestamps from the process log simplifies
2186 exiwhat.
2187
c99ce5c9
TF
2188TF/04 Improved ratelimit ACL condition.
2189
2190 The /noupdate option has been deprecated in favour of /readonly which
2191 has clearer semantics. The /leaky, /strict, and /readonly update modes
2192 are mutually exclusive. The update mode is no longer included in the
2193 database key; it just determines when the database is updated. (This
4c04137d 2194 means that when you upgrade Exim will forget old rate measurements.)
c99ce5c9
TF
2195
2196 Exim now checks that the per_* options are used with an update mode that
2197 makes sense for the current ACL. For example, when Exim is processing a
2198 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
2199 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
2200 must specify per_mail/readonly. If you omit the update mode it defaults to
2201 /leaky where that makes sense (as before) or /readonly where required.
2202
2203 The /noupdate option is now undocumented but still supported for
2204 backwards compatibility. It is equivalent to /readonly except that in
2205 ACLs where /readonly is required you may specify /leaky/noupdate or
2206 /strict/noupdate which are treated the same as /readonly.
2207
2208 A useful new feature is the /count= option. This is a generalization
2209 of the per_byte option, so that you can measure the throughput of other
2210 aggregate values. For example, the per_byte option is now equivalent
2211 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
2212
2213 The per_rcpt option has been generalized using the /count= mechanism
2214 (though it's more complicated than the per_byte equivalence). When it is
2215 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
2216 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
2217 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
2218 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
2219 Note that using per_rcpt with a non-readonly update mode in more than
2220 one ACL will cause the recipients to be double-counted. (The per_mail
2221 and per_byte options don't have this problem.)
2222
2223 The handling of very low rates has changed slightly. If the computed rate
2224 is less than the event's count (usually one) then this event is the first
2225 after a long gap. In this case the rate is set to the same as this event's
2226 count, so that the first message of a spam run is counted properly.
2227
2228 The major new feature is a mechanism for counting the rate of unique
2229 events. The new per_addr option counts the number of different
2230 recipients that someone has sent messages to in the last time period. It
2231 behaves like per_rcpt if all the recipient addresses are different, but
2232 duplicate recipient addresses do not increase the measured rate. Like
2233 the /count= option this is a general mechanism, so the per_addr option
2234 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
2235 example, measure the rate that a client uses different sender addresses
2236 with the options per_mail/unique=$sender_address. There are further
2237 details in the main documentation.
2238
3634fc25
TF
2239TF/05 Removed obsolete $Cambridge$ CVS revision strings.
2240
792e8a19
TF
2241TF/06 Removed a few PCRE remnants.
2242
5901f0ab
TF
2243TF/07 Automatically extract Exim's version number from tags in the git
2244 repository when doing development or release builds.
2245
7f2a2a43
PP
2246PP/02 Raise smtp_cmd_buffer_size to 16kB.
2247 Bugzilla 879. Patch from Paul Fisher.
e2ca7082 2248
061b7ebd
PP
2249PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
2250 Heavily based on revision 40f9a89a from Simon Arlott's tree.
2251 Bugzilla 97.
2252
e12f8c32
PP
2253PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
2254
9e949f00 2255PP/05 Variable $av_failed, true if the AV scanner deferred.
7f2a2a43
PP
2256 Bugzilla 1078. Patch from John Horne.
2257
2258PP/06 Stop make process more reliably on build failure.
2259 Bugzilla 1087. Patch from Heiko Schlittermann.
9e949f00 2260
555ae6af 2261PP/07 Make maildir_use_size_file an _expandable_ boolean.
ac53fcda
PP
2262 Bugzilla 1089. Patch from Heiko Schlittermann.
2263
2264PP/08 Handle ${run} returning more data than OS pipe buffer size.
2265 Bugzilla 1131. Patch from Holger Weiß.
555ae6af 2266
6f7fe114
PP
2267PP/09 Handle IPv6 addresses with SPF.
2268 Bugzilla 860. Patch from Wolfgang Breyha.
2269
c566dd90
PP
2270PP/10 GnuTLS: support TLS 1.2 & 1.1.
2271 Bugzilla 1156.
89f897c3
PP
2272 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
2273 Bugzilla 1095.
c566dd90 2274
d6cc7c78 2275PP/11 match_* no longer expand right-hand-side by default.
39257585
PP
2276 New compile-time build option, EXPAND_LISTMATCH_RHS.
2277 New expansion conditions, "inlist", "inlisti".
2278
0d0e4455
PP
2279PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
2280
3399bb60 2281PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
d690cbdc
PP
2282
2283PP/14 fix log_write() format string regression from TF/03.
2284 Bugzilla 1152. Patch from Dmitry Isaikin.
2285
0ca0cf52 2286
10906672
PP
2287Exim version 4.76
2288-----------------
2289
2290PP/01 The new ldap_require_cert option would segfault if used. Fixed.
2291
754a0503
PP
2292PP/02 Harmonised TLS library version reporting; only show if debugging.
2293 Layout now matches that introduced for other libraries in 4.74 PP/03.
2294
c0c7b2da
PP
2295PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
2296
e97d1f08
PP
2297PP/04 New "dns_use_edns0" global option.
2298
084c1d8c
PP
2299PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2300 Bugzilla 1098.
2301
4e7ee012
PP
2302PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2303 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
da80c2a8 2304
c8d52a00
PP
2305TK/01 Updated PolarSSL code to 0.14.2.
2306 Bugzilla 1097. Patch from Andreas Metzler.
2307
54e7ce4a
PP
2308PP/07 Catch divide-by-zero in ${eval:...}.
2309 Fixes bugzilla 1102.
2310
5ee6f336
PP
2311PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2312 Bugzilla 1104.
2313
c8d52a00 2314TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
6ea4a851
PP
2315 format-string attack -- SECURITY: remote arbitrary code execution.
2316
2317TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2318 time unintentionally subject to list matching rules, letting the header
2319 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2320 arbitrary string expansion). This allowed for information disclosure.
2321
2322PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2323 INT_MIN/-1 -- value coerced to INT_MAX.
c8d52a00 2324
10906672 2325
aa097c4c
NM
2326Exim version 4.75
2327-----------------
2328
4c04137d 2329NM/01 Workaround for PCRE version dependency in version reporting
aa097c4c
NM
2330 Bugzilla 1073
2331
7f3d9eff
TF
2332TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2333 This fixes portability to compilers other than gcc, notably
2334 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2335
159f52d2
TF
2336TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2337 makefiles for portability to HP-UX and POSIX correctness.
2338
0cc9542a
PP
2339PP/01 Permit LOOKUP_foo enabling on the make command-line.
2340 Also via indented variable definition in the Makefile.
2341 (Debugging by Oliver Heesakkers).
2342
f7274286
PP
2343PP/02 Restore caching of spamd results with expanded spamd_address.
2344 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2345
7b797365
PP
2346PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2347 Improves build reliability. Fix from: Frank Elsner
2348
caacae52
NM
2349NM/02 Fix wide character breakage in the rfc2047 coding
2350 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2351
09dcaba9
NM
2352NM/03 Allow underscore in dnslist lookups
2353 Fixes bug 1026. Patch from Graeme Fowler
2354
bc19a55b
PP
2355PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2356 Code patches from Adam Ciarcinski of NetBSD.
caacae52 2357
bd4c9759
NM
2358NM/04 Fixed exiqgrep to cope with mailq missing size issue
2359 Fixes bug 943.
2360
b72aab72
PP
2361PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2362 is logged, to avoid truncation. Patch from John Horne.
2363
2fe76745
PP
2364PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2365 Patch from Jakob Hirsch.
2366
76aa570c
PP
2367PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2368 SQL string expansion failure details.
2369 Patch from Andrey Oktyabrski.
2370
f1e5fef5
PP
2371PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2372 Patch from Simon Arlott.
2373
4d805ee9
PP
2374PP/09 New lookups functionality failed to compile on old gcc which rejects
2375 extern declarations in function scope.
2376 Patch from Oliver Fleischmann
2377
cd59ab18
PP
2378PP/10 Use sig_atomic_t for flags set from signal handlers.
2379 Check getgroups() return and improve debugging.
2380 Fixed developed for diagnosis in bug 927 (which turned out to be
2381 a kernel bug).
2382
332f5cf3
PP
2383PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2384 Patch from Mark Zealey.
2385
29cfeb94
PP
2386PP/12 Bugzilla 1056: Improved spamd server selection.
2387 Patch from Mark Zealey.
2388
660242ad
PP
2389PP/13 Bugzilla 1086: Deal with maildir quota file races.
2390 Based on patch from Heiko Schlittermann.
2391
bc4bc4c5
PP
2392PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2393 Patch from Uwe Doering, sign-off by Michael Haardt.
2394
2e64baa9
NM
2395NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2396 variable declaration deep within a block. Bug and patch from
2397 Dennis Davis.
2398
4c04137d 2399PP/15 lookups-Makefile IRIX compatibility coercion.
bddd7526 2400
6bac1a9a
PP
2401PP/16 Make DISABLE_DKIM build knob functional.
2402
552193f0
NM
2403NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2404 Patch by Simon Arlott
baeee2c1 2405
1b587e48
TF
2406TF/03 Fix valgrind.h portability to C89 compilers that do not support
2407 variable argument macros. Our copy now differs from upstream.
2408
aa097c4c 2409
8c07b69f
TF
2410Exim version 4.74
2411-----------------
2412
2413TF/01 Failure to get a lock on a hints database can have serious
2414 consequences so log it to the panic log.
2415
c0ea85ab
TF
2416TF/02 Log LMTP confirmation messages in the same way as SMTP,
2417 controlled using the smtp_confirmation log selector.
2418
0761d44e
TF
2419TF/03 Include the error message when we fail to unlink a spool file.
2420
0a349494
PP
2421DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2422 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2423 for maintaining out-of-tree patches for some time.
2424
2425PP/01 Bugzilla 139: Documentation and portability issues.
2426 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2427 Handle per-OS dynamic-module compilation flags.
2428
fea24b2e
PP
2429PP/02 Let /dev/null have normal permissions.
2430 The 4.73 fixes were a little too stringent and complained about the
2431 permissions on /dev/null. Exempt it from some checks.
2432 Reported by Andreas M. Kirchwitz.
2433
6545de78
PP
2434PP/03 Report version information for many libraries, including
2435 Exim version information for dynamically loaded libraries. Created
2436 version.h, now support a version extension string for distributors
2437 who patch heavily. Dynamic module ABI change.
2438
1670ef10
PP
2439PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2440 privilege escalation vulnerability whereby the Exim run-time user
2441 can cause root to append content of the attacker's choosing to
2442 arbitrary files.
2443
c0886197
PP
2444PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2445 (Wolfgang Breyha)
2446
b7487bce
PP
2447PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2448 If dropping privileges for untrusted macros, we disabled normal logging
2449 on the basis that it would fail; for the Exim run-time user, this is not
2450 the case, and it resulted in successful deliveries going unlogged.
2451 Fixed. Reported by Andreas Metzler.
2452
8c07b69f 2453
97fd1e48 2454Exim version 4.73
ed7f7860 2455-----------------
97fd1e48
PP
2456
2457PP/01 Date: & Message-Id: revert to normally being appended to a message,
2458 only prepend for the Resent-* case. Fixes regression introduced in
2459 Exim 4.70 by NM/22 for Bugzilla 607.
2460
6901c596
PP
2461PP/02 Include check_rfc2047_length in configure.default because we're seeing
2462 increasing numbers of administrators be bitten by this.
2463
a8c8d6b5
JJ
2464JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2465
77bb000f
PP
2466PP/03 Bugzilla 994: added openssl_options main configuration option.
2467
a29e5231
PP
2468PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2469
ec5a0394 2470PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
a29e5231 2471
55c75993
PP
2472PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2473
453a6645 2474PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
ec5a0394
PP
2475 without a peer certificate, leading to a segfault because of an
2476 assumption that peers always have certificates. Be a little more
453a6645
PP
2477 paranoid. Problem reported by Martin Tscholak.
2478
8544e77a
PP
2479PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2480 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2481 NB: ClamAV planning to remove STREAM in "middle of 2010".
3346ab01
PP
2482 CL also introduces -bmalware, various -d+acl logging additions and
2483 more caution in buffer sizes.
8544e77a 2484
83e029d5
PP
2485PP/09 Implemented reverse_ip expansion operator.
2486
ed7f7860
PP
2487PP/10 Bugzilla 937: provide a "debug" ACL control.
2488
7d9f747b
PP
2489PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2490
4b2241d2
PP
2491PP/12 Bugzilla 973: Implement --version.
2492
10385c15
PP
2493PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2494
dbc4b90d
PP
2495PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2496
532be449
PP
2497PP/15 Bugzilla 816: support multiple condition rules on Routers.
2498
6a8de854 2499PP/16 Add bool_lax{} expansion operator and use that for combining multiple
71265ae9
PP
2500 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2501 ignore trailing whitespace.
6a8de854 2502
5dc43717
JJ
2503JJ/02 prevent non-panic DKIM error from being sent to paniclog
2504
2505JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2506 "exim" to be used
55c75993 2507
3346ab01
PP
2508PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2509 Notification from Dr Andrew Aitchison.
2510
491fab4c
PP
2511PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2512 ExtendedDetectionInfo response format.
2513 Notification from John Horne.
2514
13eb9497
PP
2515PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2516 compatible.
2517
2518PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2519 XSL and documented dependency on system catalogs, with examples of how
2520 it normally works.
2521
7f36d675
DW
2522DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2523 access.
2524
c1d94452
DW
2525DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2526 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2527 configuration file which is writeable by the Exim user or group.
2528
e2f5dc15
DW
2529DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2530 of configuration files to cover files specified with the -C option if
2531 they are going to be used with root privileges, not just the default
2532 configuration file.
2533
cd25e41d
DW
2534DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2535 option (effectively making it always true).
2536
261dc43e
DW
2537DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2538 files to be used while preserving root privileges.
2539
fa32850b
DW
2540DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2541 that rogue child processes cannot use them.
2542
79d4bc3d
PP
2543PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2544 run-time user, instead of root.
2545
43236f35 2546PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2cfd3221
PP
2547 Exim run-time user without dropping privileges.
2548
fb08281f
DW
2549DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2550 result string, instead of calling string_vformat() twice with the same
2551 arguments.
3346ab01 2552
74935b98
DW
2553DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2554 for other users. Others should always drop root privileges if they use
2555 -C on the command line, even for a whitelisted configure file.
2556
90b6341f
DW
2557DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2558
57730b52
ML
2559NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2560
66581d1e 2561
465e92cf
JJ
2562Exim version 4.72
2563-----------------
2564
453a6645
PP
2565JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2566 $data_path, and $header_path variables; fixed documentation bugs and
2567 typos
465e92cf 2568
453a6645
PP
2569JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2570 exipick to access non-standard spools, including the "frozen" queue
2571 (Finput)
edae0343 2572
9bd3e22c
NM
2573NM/01 Bugzilla 965: Support mysql stored procedures.
2574 Patch from Alain Williams
2575
bb576ff7
NM
2576NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2577
5a1a5845
NM
2578NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2579 Patch from Andreas Metzler
2580
981a9fad
NM
2581NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2582 Patch from Kirill Miazine
2583
7fc497ee
NM
2584NM/05 Bugzilla 671: Added umask to procmail example.
2585
1a41defa
JJ
2586JJ/03 installed exipick 20100323.0, fixing doc bug
2587
a466095c 2588NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
b26eacf1 2589 directory. Notification and patch from Dan Rosenberg.
a466095c 2590
94a6bd0b
NM
2591TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2592
2593TK/02 Improve log output when DKIM signing operation fails.
2594
2595MH/01 Treat the transport option dkim_domain as a colon separated
2596 list, not as a single string, and sign the message with each element,
2597 omitting multiple occurences of the same signer.
2598
c1b141a8
NM
2599NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2600 Bugzilla 985, 986. Patch by Simon Arlott
94a6bd0b 2601
b26eacf1 2602NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
0d0c6357
NM
2603 Patch by Simon Arlott
2604
179c5980 2605PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
b26eacf1 2606 MBX locking. Notification from Dan Rosenberg.
179c5980 2607
9bd3e22c 2608
7c6d71af
NM
2609Exim version 4.71
2610-----------------
2611
7d9f747b 2612TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
7c6d71af 2613
f013fb92
NM
2614NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2615
0eb8eedd
NM
2616NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2617
663ee6d9
NM
2618NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2619
177ebd9b
NM
2620NM/04 Bugzilla 915: Flag broken perl installation during build.
2621
7c6d71af 2622
210f147e
NM
2623Exim version 4.70
2624-----------------
2625
cdd3bb85 2626TK/01 Added patch by Johannes Berg that expands the main option
e739e3d9 2627 "spamd_address" if it starts with a dollar sign.
cdd3bb85
TK
2628
2629TK/02 Write list of recipients to X-Envelope-Sender header when building
2630 the mbox-format spool file for content scanning (suggested by Jakob
7d9f747b 2631 Hirsch).
cdd3bb85
TK
2632
2633TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2634 (http://www.dcc-servers.net/) support via dccifd. Activated by
e739e3d9 2635 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
cdd3bb85
TK
2636
2637TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2638 by Mark Daniel Reidel <mr@df.eu>.
2639
210f147e
NM
2640NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2641 When building exim an external PCRE library is now needed -
2642 PCRE is a system library on the majority of modern systems.
2643 See entry on PCRE_LIBS in EDITME file.
2644
deafd5b3
NM
2645NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2646 conversation. Added nologin parameter to request.
7d9f747b 2647 Patch contributed by Kirill Miazine.
deafd5b3 2648
089793a4
TF
2649TF/01 Do not log submission mode rewrites if they do not change the address.
2650
5f16ca82
TF
2651TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2652
dae9d94e 2653NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
7d9f747b 2654 log files in place. Contributed by Roberto Lima.
dae9d94e 2655
7d9f747b 2656NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
3f0da4d0 2657
06864c44
TF
2658TF/03 Bugzilla 615: When checking the local_parts router precondition
2659 after a local_part_suffix or local_part_prefix option, Exim now
2660 does not use the address's named list lookup cache, since this
2661 contains cached lookups for the whole local part.
2662
65a7d8c3 2663NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
7d9f747b 2664 Robert Millan. Documentation is in experimental-spec.txt.
65a7d8c3 2665
23510047 2666TF/04 Bugzilla 668: Fix parallel build (make -j).
65a7d8c3 2667
7d9f747b 2668NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
5f28a6e8 2669
7d8eec3a 2670NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
7d9f747b 2671 Patch provided by Jan Srzednicki.
6c588e74 2672
89dec7b6
TF
2673TF/05 Leading white space used to be stripped from $spam_report which
2674 wrecked the formatting. Now it is preserved.
5f28a6e8 2675
a99de90c
TF
2676TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2677 that they are available at delivery time.
2678
e2803e40
TF
2679TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2680
7199e1ee
TF
2681TF/08 TLS error reporting now respects the incoming_interface and
2682 incoming_port log selectors.
2683
e276e04b
TF
2684TF/09 Produce a more useful error message if an SMTP transport's hosts
2685 setting expands to an empty string.
2686
ce552449 2687NM/06 Bugzilla 744: EXPN did not work under TLS.
7d9f747b 2688 Patch provided by Phil Pennock.
ce552449 2689
e765a0f1 2690NM/07 Bugzilla 769: Extraneous comma in usage fprintf
7d9f747b 2691 Patch provided by Richard Godbee.
e765a0f1 2692
4f054c63 2693NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
447de4b0 2694 acl_smtp_notquit, added index entry.
4f054c63 2695
7d9f747b
PP
2696NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2697 Patch provided by Eugene Bujak.
24c929a2 2698
7d9f747b
PP
2699NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2700 accept(). Patch provided by Maxim Dounin.
cf73943b 2701
b52bc06e 2702NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
7d9f747b 2703 Patch provided by Phil Pennock.
b52bc06e 2704
447de4b0
NM
2705NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2706
4c69d561 2707NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
7d9f747b 2708 Patch provided by Brad "anomie" Jorsch.
4c69d561 2709
d5c39246 2710NM/14 Bugzilla 622: Added timeout setting to transport filter.
7d9f747b 2711 Patch provided by Dean Brooks.
9b989985 2712
0b23848a
TK
2713TK/05 Add native DKIM support (does not depend on external libraries).
2714
8f3414a1 2715NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
7d9f747b 2716 Patch provided by Graeme Fowler.
e2aacdfd 2717
fb6f955d
NM
2718NM/16 Bugzilla 851: Documentation example syntax fix.
2719
2720NM/17 Changed NOTICE file to remove references to embedded PCRE.
8f3414a1 2721
7d9f747b
PP
2722NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2723 lsearch.
dbb0bf41 2724
7d9f747b
PP
2725NM/19 Bugzilla 745: TLS version reporting.
2726 Patch provided by Phil Pennock.
f3766eb5 2727
7d9f747b
PP
2728NM/20 Bugzilla 167: bool: condition support.
2729 Patch provided by Phil Pennock.
36f12725 2730
7d9f747b
PP
2731NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2732 clients. Patch provided by Phil Pennock.
e6060e2c 2733
7d9f747b
PP
2734NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2735 Patch provided by Brad "anomie" Jorsch.
5eb690a1 2736
7d9f747b
PP
2737NM/23 Bugzilla 687: Fix misparses in eximstats.
2738 Patch provided by Heiko Schlittermann.
d5c13d66 2739
7d9f747b
PP
2740NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2741 Patch provided by Heiko Schlittermann.
b2335c0b 2742
7d9f747b 2743NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1da77999 2744 plus update to original patch.
f4cd9433 2745
7d9f747b 2746NM/26 Bugzilla 799: Documentation correction for ratelimit.
dc988b7e 2747
7d9f747b
PP
2748NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2749 Patch provided by David Brownlee.
8dc71ab3 2750
7d9f747b 2751NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
400eda43 2752
7d9f747b 2753NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
ec5a421b 2754
7d9f747b 2755NM/30 Bugzilla 888: TLS documentation bugfixes.
07af267e 2756
7d9f747b 2757NM/31 Bugzilla 896: Dovecot buffer overrun fix.
51473862 2758
17792b53 2759NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
7d9f747b 2760 Unlike the original bugzilla I have changed all shell scripts in src tree.
17792b53 2761
7d9f747b
PP
2762NM/33 Bugzilla 898: Transport filter timeout fix.
2763 Patch by Todd Rinaldo.
52383f8f 2764
91576cec 2765NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
7d9f747b 2766 Patch by Serge Demonchaux.
5ca6d115 2767
7d9f747b
PP
2768NM/35 Bugzilla 39: Base64 decode bug fixes.
2769 Patch by Jakob Hirsch.
baee9eee 2770
7d9f747b 2771NM/36 Bugzilla 909: Correct connect() call in dcc code.
e93a964c 2772
7d9f747b 2773NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
9bf3d68f 2774
7d9f747b 2775NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
96535b98 2776
7d9f747b 2777NM/39 Bugzilla 911: Fixed MakeLinks build script.
30339e0f 2778
deafd5b3 2779
47db1125
NM
2780Exim version 4.69
2781-----------------
2782
4b3504d0
TK
2783TK/01 Add preliminary DKIM support. Currently requires a forked version of
2784 ALT-N's libdkim that I have put here:
2785 http://duncanthrax.net/exim-experimental/
2786
2787 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2788 were called 'true' and it seems that C99 defines that as a reserved
2789 keyword to be used with 'bool' variable types. That means you could
2790 not include C99-style headers which use bools without triggering
2791 build errors in sieve.c.
2792
81ea09ca
NM
2793NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2794 as mailq or other aliases. Changed the --help handling significantly
2795 to do whats expected. exim_usage() emits usage/help information.
2796
f13cddcb
SC
2797SC/01 Added the -bylocaldomain option to eximstats.
2798
7d9f747b 2799NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
8ad076b2 2800
7d9f747b 2801NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
a843aaa6 2802
7d9f747b 2803NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
47db1125
NM
2804
2805
eb4c0de6
PH
2806Exim version 4.68
2807-----------------
2808
2809PH/01 Another patch from the Sieve maintainer.
2810
6a3bceb1
PH
2811PH/02 When an IPv6 address is converted to a string for single-key lookup
2812 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2813 dots are used instead of colons so that keys in lsearch files need not
2814 contain colons. This was done some time before quoting was made available
2815 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2816 (notated using the quote facility) so as to distinguish them from IPv4
2817 keys. This meant that lookups for IP addresses in host lists did not work
2818 for iplsearch lookups.
2819
2820 This has been fixed by arranging for IPv6 addresses to be expressed with
2821 colons if the lookup type is iplsearch. This is not incompatible, because
2822 previously such lookups could never work.
2823
4c04137d 2824 The situation is now rather anomalous, since one *can* have colons in
6a3bceb1
PH
2825 ordinary lsearch keys. However, making the change in all cases is
2826 incompatible and would probably break a number of configurations.
2827
2e30fa9d
TK
2828TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2829 version.
2830
0806a9c5
MH
2831MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2832 conversion specification without a maximum field width, thereby enabling
2833 a rogue spamd server to cause a buffer overflow. While nobody in their
2834 right mind would setup Exim to query an untrusted spamd server, an
2835 attacker that gains access to a server running spamd could potentially
2836 exploit this vulnerability to run arbitrary code as the Exim user.
2837
ae276964
TK
2838TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2839 $primary_hostname instead of what libspf2 thinks the hosts name is.
2840
0f2cbd1b
MH
2841MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2842 a directory entry by the name of the lookup key. Previously, if a
2843 symlink pointed to a non-existing file or a file in a directory that
2844 Exim lacked permissions to read, a lookup for a key matching that
2845 symlink would fail. Now it is enough that a matching directory entry
2846 exists, symlink or not. (Bugzilla 503.)
2847
2b85bce7
PH
2848PH/03 The body_linecount and body_zerocount variables are now exported in the
2849 local_scan API.
2850
93655c46
PH
2851PH/04 Added the $dnslist_matched variable.
2852
6c512171
PH
2853PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2854 This means they are set thereafter only if the connection becomes
2855 encrypted.
2856
2857PH/06 Added the client_condition to authenticators so that some can be skipped
2858 by clients under certain conditions.
2859
aa6dc513
PH
2860PH/07 The error message for a badly-placed control=no_multiline_responses left
2861 "_responses" off the end of the name.
2862
a96603a0
PH
2863PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2864
8f240103
PH
2865PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2866 (without spaces) instead of just copying the configuration text.
2867
2868PH/10 Added the /noupdate option to the ratelimit ACL condition.
2869
d677b2f2
PH
2870PH/11 Added $max_received_linelength.
2871
d52120f2
PH
2872PH/12 Added +ignore_defer and +include_defer to host lists.
2873
64f2600a
PH
2874PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2875 way in which PCRE > 7.0 is built.
2876
8669f003
PH
2877PH/14 Implemented queue_only_load_latch.
2878
a4dc33a8
PH
2879PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2880 MAIL command. The effect was to mangle the value on 64-bit systems.
2881
d6a60c0f
PH
2882PH/16 Another patch from the Sieve maintainer.
2883
8f128379
PH
2884PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2885
8932dffe
PH
2886PH/18 If a system quota error occurred while trying to create the file for
2887 a maildir delivery, the message "Mailbox is full" was not appended to the
2888 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2889 only to a quota excession during the actual writing of the file.
d6a60c0f 2890
ddea74fa 2891PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
2892 characters?) which causes problems in log lines. The DN values are now
2893 passed through string_printing() before being added to log lines.
2894
ddea74fa 2895PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
2896 and InterBase are left for another time.)
2897
ddea74fa
PH
2898PH/21 Added message_body_newlines option.
2899
ce9f225c
PH
2900PH/22 Guard against possible overflow in moan_check_errorcopy().
2901
19897d52
PH
2902PH/23 POSIX allows open() to be a macro; guard against that.
2903
bc64a74d
PH
2904PH/24 If the recipient of an error message contained an @ in the local part
2905 (suitably quoted, of course), incorrect values were put in $domain and
2906 $local_part during the evaluation of errors_copy.
2907
eb4c0de6 2908
b4ed4da0
PH
2909Exim version 4.67
2910-----------------
2911
22ad45c9
MH
2912MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2913 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2914 Jan Srzednicki.
2915
b4ed4da0
PH
2916PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2917 issue a MAIL command.
2918
431b7361
PH
2919PH/02 In an ACL statement such as
2920
2921 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2922
2923 if a client was not listed at all, or was listed with a value other than
2924 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2925 the condition was not true (as it should be), so access was not denied.
2926 The bug was that the ! inversion was incorrectly passed on to the second
2927 item. This has been fixed.
2928
2929PH/03 Added additional dnslists conditions == and =& which are different from
2930 = and & when the dns lookup returns more than one IP address.
2931
83da1223
PH
2932PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2933 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2934
54fc8428
PH
2935PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2936 FSYNC, which compiles an option called disable_fsync that allows for
2937 bypassing fsync(). The documentation is heavily laced with warnings.
2938
34c5e8dd
SC
2939SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2940
bbe15da8
PH
2941PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2942 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2943 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2944 including adding "make clean"; (3) Added -fPIC when compiling the test
2945 dynamically loaded module, to get rid of a warning.
2946
0e8a9471
MH
2947MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2948 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2949 = 0s. The bug is otherwise harmless.
2950
f0872424
PH
2951PH/07 There was a bug in the dovecot authenticator such that the value of
2952 $auth1 could be overwritten, and so not correctly preserved, after a
2953 successful authentication. This usually meant that the value preserved by
2954 the server_setid option was incorrect.
2955
b01dd148
PH
2956PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2957
6bf342e1
PH
2958PH/09 Installed PCRE release 7.0.
2959
273f34d0
PH
2960PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2961 run for batched SMTP input. It is now run at the start of every message
2962 in the batch. While fixing this I discovered that the process information
2963 (output by running exiwhat) was not always getting set for -bs and -bS
2964 input. This is fixed, and it now also says "batched" for BSMTP.
2965
cf8b11a5
PH
2966PH/11 Added control=no_pipelining.
2967
41c7c167
PH
2968PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2969 patch, slightly modified), and move the expansion of helo_data till after
2970 the connection is made in the smtp transport (so it can use these
2971 values).
2972
9c57cbc0
PH
2973PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2974
f3f065bb
PH
2975PH/14 Added log_selector = +pid.
2976
047bdd8c
PH
2977PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2978
0ce9abe6
PH
2979PH/16 Add ${if forany and ${if forall.
2980
0e22dfd1
PH
2981PH/17 Added dsn_from option to vary the From: line in DSNs.
2982
4c590bd1
PH
2983PH/18 Flush SMTP output before performing a callout, unless control =
2984 no_callout_flush is set.
2985
09945f1e
PH
2986PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2987 was true (the default) a successful delivery failed to delete the retry
2988 item, thus causing premature timeout of the address. The bug is now
2989 fixed.
2990
c51b8e75
PH
2991PH/20 Added hosts_avoid_pipelining to the smtp transport.
2992
e28326d8 2993PH/21 Long custom messages for fakedefer and fakereject are now split up
4c04137d 2994 into multiline responses in the same way that messages for "deny" and
e28326d8
PH
2995 other ACL rejections are.
2996
75b1493f
PH
2997PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2998 with slight modification.
2999
7c5214ec
PH
3000PH/23 Applied sieve patches from the maintainer "tracking the latest notify
3001 draft, changing the syntax and factoring some duplicate code".
3002
4311097e
PH
3003PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
3004 for deliveries of the second and subsequent messages over the same SMTP
3005 connection.
3006
29f89cad
PH
3007PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
3008 ${reduce, with only minor "tidies".
3009
5e687460
SC
3010SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
3011
c3611384
PH
3012PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
3013 expansion side effects.
3014
5a11a7b4
PH
3015PH/27 When a message times out after an over-quota error from an Exim-imposed
3016 quota, the bounce message says "mailbox is full". This message was not
3017 being given when it was a system quota that was exceeded. It now should
3018 be the same.
3019
0e20aff9
MH
3020MH/03 Made $recipients available in local_scan(). local_scan() already has
3021 better access to the recipient list through recipients_list[], but
3022 $recipients can be useful in postmaster-provided expansion strings.
3023
ca86f471
PH
3024PH/28 The $smtp_command and $smtp_command_argument variables were not correct
3025 in the case of a MAIL command with additional options following the
3026 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
3027 were accidentally chopped off.
3028
a14e5636
PH
3029PH/29 SMTP synchronization checks are implemented when a command is read -
3030 there is a check that no more input is waiting when there shouldn't be
3031 any. However, for some commands, a delay in an ACL can mean that it is
3032 some time before the response is written. In this time, more input might
3033 arrive, invalidly. So now there are extra checks after an ACL has run for
3034 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
3035 pipelining has not been advertised.
3036
ec95d1a6
PH
3037PH/30 MH's patch to allow iscntrl() characters to be list separators.
3038
42855d71
PH
3039PH/31 Unlike :fail:, a custom message specified with :defer: was not being
3040 returned in the SMTP response when smtp_return_error_details was false.
3041 This has been fixed.
3042
57c2c631
PH
3043PH/32 Change the Dovecot authenticator to use read() and write() on the socket
3044 instead of the C I/O that was originally supplied, because problems were
3045 reported on Solaris.
3046
58c01c94
PH
3047PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
3048 Exim which did not show up earlier: it was assuming that a call to
3049 SSL_CTX_set_info_callback() might give an error value. In fact, there is
3050 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
3051 was a macro that became an assignment, so it seemed to work. This has
3052 changed to a proper function call with a void return, hence the compile
3053 error. Exim's code has been fixed.
3054
dee5a20a
PH
3055PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
3056 cpus.
3057
d2ee6114
PH
3058PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
3059
b2d5182b
PH
3060PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
3061
79749a79
PH
3062PH/37 If a message is not accepted after it has had an id assigned (e.g.
3063 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
3064 "Completed" line in the log. When some messages of this type were
3065 selected by exigrep, they were listed as "not completed". Others were
3066 picked up by some special patterns. I have improved the selection
3067 criteria to be more general.
79749a79 3068
c456d9bb
PH
3069PH/38 The host_find_failed option in the manualroute router can now be set
3070 to "ignore", to completely ignore a host whose IP address cannot be
3071 found. If all hosts are ignored, the behaviour is controlled by the new
3072 host_all_ignored option.
3073
cd9868ec
PH
3074PH/39 In a list of hosts for manualroute, if one item (either because of multi-
3075 homing or because of multiple MX records with /mx) generated more than
3076 one IP address, and the following item turned out to be the local host,
3077 all the secondary addresses of the first item were incorrectly removed
3078 from the list, along with the local host and any following hosts (which
3079 is what is supposed to happen).
3080
ebeaf996
PH
3081PH/40 When Exim receives a message, it writes the login name, uid, and gid of
3082 whoever called Exim into the -H file. In the case of the daemon it was
3083 behaving confusingly. When first started, it used values for whoever
3084 started the daemon, but after a SIGHUP it used the Exim user (because it
3085 calls itself on a restart). I have changed the code so that it now always
3086 uses the Exim user.
3087
2679d413
PH
3088PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
3089 message are rejected with the same error (e.g. no authentication or bad
3090 sender address), and a DATA command is nevertheless sent (as can happen
3091 with PIPELINING or a stupid MUA), the error message that was given to the
3092 RCPT commands is included in the rejection of the DATA command. This is
3093 intended to be helpful for MUAs that show only the final error to their
3094 users.
3095
84024b72
PH
3096PH/42 Another patch from the Sieve maintainer.
3097
8005d38e
SC
3098SC/02 Eximstats - Differentiate between permanent and temporary rejects.
3099 Eximstats - Fixed some broken HTML links and added missing column headers
3100 (Jez Hancock).
3101 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
3102 columns for Rejects, Temp Rejects, Ham, and Spam rows.
3103
3298c6c6
SC
3104SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
3105
a43a27c5
PH
3106PH/43 Yet another patch from the Sieve maintainer.
3107
58eb016e 3108PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
3109 the response to the final '.' that terminates a message, but only in the
3110 case where the client has not sent further data following the '.'
3111 (unfortunately, this is allowed). However, in many cases there won't be
3112 any further data because there won't be any more messages to send. A call
3113 to select() can be used: if it shows that the input is "ready", there is
3114 either input waiting, or the socket has been closed. An attempt to read
3115 the next input character can distinguish the two cases. Previously, Exim
58eb016e 3116 would have sent an OK response which the client would never have see.
563b63fa
PH
3117 This could lead to message repetition. This fix should cure that, at
3118 least in a lot of common cases.
58eb016e 3119
b43a74ea
PH
3120PH/45 Do not advertise STARTTLS in response to HELP unless it would be
3121 advertised in response to EHLO.
3122
b4ed4da0 3123
5dd1517f
PH
3124Exim version 4.66
3125-----------------
3126
3127PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
3128 fixed by 4.65/MH/01 (is this a record?) are fixed:
3129
3130 (i) An empty string was always treated as zero by the numeric comparison
3131 operators. This behaviour has been restored.
3132
3133 (ii) It is documented that the numeric comparison operators always treat
3134 their arguments as decimal numbers. This was broken in that numbers
3135 starting with 0 were being interpreted as octal.
3136
3137 While fixing these problems I realized that there was another issue that
3138 hadn't been noticed. Values of message_size_limit (both the global option
3139 and the transport option) were treated as octal if they started with 0.
3140 The documentation was vague. These values are now always treated as
3141 decimal, and I will make that clear in the documentation.
3142
3143
93cfa765
TK
3144Exim version 4.65
3145-----------------
3146
3147TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
3148 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
3149 versions. (#438)
3150
d6066548
MH
3151MH/01 Don't check that the operands of numeric comparison operators are
3152 integers when their expansion is in "skipping" mode (fixes bug
3153 introduced by 4.64-PH/07).
3154
4362ff0d
PH
3155PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
3156 child addresses, Exim now panics and dies. Previously, because the count
3157 is held in a short int, deliveries were likely to be lost. As such a
3158 large number of recipients for a single message is ridiculous
3159 (performance will be very, very poor), I have chosen to impose a limit
3160 rather than extend the field.
3161
93cfa765 3162
944e9e9c
TF
3163Exim version 4.64
3164-----------------
aa41d2de 3165
21d74bd9
TK
3166TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
3167 leftover -K file (the existence of which was triggered by #402).
3168 While we were at it, introduced process PID as part of the -K
3169 filename. This should rule out race conditions when creating
3170 these files.
3171
3172TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
3173 processing considerably. Previous code took too long for large mails,
3174 triggering a timeout which in turn triggers #401.
3175
3176TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
3177 in the DK code in transports.c. sendfile() is not really portable,
3178 hence the _LINUX specificness.
944e9e9c
TF
3179
3180TF/01 In the add_headers option to the mail command in an Exim filter,
3181 there was a bug that Exim would claim a syntax error in any
3182 header after the first one which had an odd number of characters
3183 in the field name.
3184
2b1c6e3a
PH
3185PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
3186 callout verification, Exim cached a "reject" for the entire domain. This
3187 is correct for most verifications, but it is not correct for a recipient
3188 verification with use_sender or use_postmaster set, because in that case
3189 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
3190 case of MAIL FROM:<> rejection from other early rejections (e.g.
3191 rejection of HELO). When verifying a recipient using a non-null MAIL
3192 address, the cache is ignored if it shows MAIL FROM:<> rejection.
3193 Whatever the result of the callout, the value of the domain cache is
3194 left unchanged (for any other kind of callout, getting as far as trying
3195 RCPT means that the domain itself is ok).
3196
1f872c80
PH
3197PH/02 Tidied a number of unused variable and signed/unsigned warnings that
3198 gcc 4.1.1 threw up.
3199
3200PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
3201 manifest itself as EPIPE rather than ECONNECT. When tidying away a
3202 session, the daemon ignores ECONNECT errors and logs others; it now
3203 ignores EPIPE as well.
3204
d203e649
PH
3205PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
3206 (quoted-printable decoding).
3207
cc2ed8f7 3208PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 3209 later the small subsequent patch to fix an introduced bug.
f951fd57 3210
ddfcd446
PH
3211PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
3212
d45b1de8
PH
3213PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
3214
3215PH/08 An error is now given if message_size_limit is specified negative.
3216
38a0a95f 3217PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 3218 to be given (somewhat) arbitrary names.
38a0a95f 3219
a2405d83
JJ
3220JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
3221 in 4.64-PH/09.
3222
3223JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
3224 miscellaneous code fixes
3225
6ea85e9a
PH
3226PH/10 Added the log_reject_target ACL modifier to specify where to log
3227 rejections.
3228
26da7e20
PH
3229PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
3230 hostname. This is wrong, because it relates to the incoming message (and
3231 probably the interface on which it is arriving) and not to the outgoing
3232 callout (which could be using a different interface). This has been
3233 changed to use the value of the helo_data option from the smtp transport
3234 instead - this is what is used when a message is actually being sent. If
3235 there is no remote transport (possible with a router that sets up host