Fix spurious detection of timeout while writing to transport filter
[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
4c57a40e 5
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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
6ce1ece9
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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
dcbfbada
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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
8aa16eb7
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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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61JH/15 When PIPELINING, synch after every hundred or so RCPT commands sent and
62 check for 452 responses. This slightly helps the inefficieny of doing
63 a large alias-expansion into a recipient-limited target. The max_rcpt
64 transport option still applies (and at the current default, will override
65 the new feature). The check is done for either cause of synch, and forces
66 a fast-retry of all 452'd recipients using a new MAIL FROM on the same
67 connection. The new facility is not tunable at this time.
68
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69JH/16 Fix the variables set by the gsasl authenticator. Previously a pointer to
70 library live data was being used, so the results became garbage. Make
71 copies while it is still usable.
72
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73JH/17 Logging: when the deliver_time selector ise set, include the DT= field
74 on delivery deferred (==) and failed (**) lines (if a delivery was
75 attemtped). Previously it was only on completion (=>) lines.
76
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77JH/18 Authentication: the gsasl driver not provides the $authN variables in time
78 for the expansion of the server_scram_iter and server_scram_salt options.
79
79e5ebf9 80WB/01 SPF: DNS lookups for the obsolete SPF RR type done by the libspf2 library
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81 are now specifically given a NO_DATA response without hitting the system
82 resolver. The library goes on to do the now-standard TXT lookup.
79e5ebf9 83 Use of dnsdb lookups is not affected.
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84
85JH/19 Bug 2507: Modules: on handling a dynamic-module (lookups) open failure,
86 only retrieve the errormessage once. Previously two calls to dlerror()
87 were used, and the second one (for mainlog/paniclog) retrieved null
88 information.
79e5ebf9 89
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90JH/20 Taint checking: disallow use of tainted data for
91 - the appendfile transport file and directory options
92 - the pipe transport command
481e63ca 93 - the autoreply transport file, log and once options
7d99cba1 94 - file names used by the redirect router (including filter files)
ed162055 95 - named-queue names
9214d2e4 96 Previously this was permitted.
0d2e392e 97
7a66b3af
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98JH/21 Bug 2501: Fix init call in the heimdal authenticator. Previously it
99 adjusted the size of a major service buffer; this failed because the
100 buffer was in use at the time. Change to a compile-time increase in the
101 buffer size, when this authenticator is compiled into exim.
102
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103JH/22 Taint-checking: move to safe-mode taint checking on all platforms. The
104 previous fast-mode was untenable in the face of glibs using mmap to
105 support larger malloc requests.
36eb5d3d 106
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107PP/01 Update the openssl_options possible values through OpenSSL 1.1.1c.
108 New values supported, if defined on system where compiled:
109 allow_no_dhe_kex, cryptopro_tlsext_bug, enable_middlebox_compat,
110 no_anti_replay, no_encrypt_then_mac, prioritize_chacha, tlsext_padding
111
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112JH/23 Performance improvement in the initial phase of a two-pass queue run. By
113 running a limited number of proceses in parallel, a benefit is gained. The
114 amount varies with the platform hardware and load. The use of the option
115 queue_run_in_order means we cannot do this, as ordering becomes
116 indeterminate.
117
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118JH/24 Bug 2524: fix the cyrus_sasl auth driver gssapi usage. A previous fix
119 had introduced a string-copy (for ensuring NUL-termination) which was not
120 appropriate for that case, which can include embedded NUL bytes in the
121 block of data. Investigation showed the copy to actually be needless, the
122 data being length-specified.
123
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124JH/25 Fix use of concurrent TLS connections under GnuTLS. When a callout was
125 done during a receiving connection, and both used TLS, global info was
126 used rather than per-connection info for tracking the state of data
127 queued for transmission. This could result in a connection hang.
128
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129JH/26 Fix use of the SIZE parameter on MAIL commands, on continued connections.
130 Previously, when delivering serveral messages down a single connection
131 only the first would provide a SIZE. This was due to the size information
132 not being properly tracked.
133
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134JH/27 Bug 2530: When operating in a timezone with sub-minute offset, such as
135 TAI (at 37 seconds currently), pretend to be in UTC for time-related
136 expansion and logging. Previously, spurious values such as a future
137 minute could be seen.
138
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139JH/28 Bug 2533: Fix expansion of ${tr } item. When called in some situations
140 it could crash from a null-deref. This could also affect the
141 ${addresses: } operator and ${readsock } item.
142
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143JH/29 Bug 2537: Fix $mime_part_count. When a single connection had a non-mime
144 message following a mime one, the variable was not reset.
145
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146JH/30 When an pipelined-connect fails at the first response, assume incorrect
147 cached capability (perhaps the peer reneged?) and immediately retry in
148 non-pipelined mode.
149
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150JH/31 Fix spurious detection of timeout while writing to transport filter.
151
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153Exim version 4.93
154-----------------
155
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156JH/01 OpenSSL: With debug enabled output keying information sufficient, server
157 side, to decode a TLS 1.3 packet capture.
40ed89b3 158
fc243e94 159JH/02 OpenSSL: Suppress the sending of (stateful) TLS1.3 session tickets.
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160 Previously the default library behaviour applied, sending two, each in
161 its own TCP segment.
162
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163JH/03 Debug output for ACL now gives the config file name and line number for
164 each verb.
165
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166JH/04 The default received_header_text now uses the RFC 8314 tls cipher clause.
167
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168JH/05 DKIM: ensure that dkim_domain elements are lowercased before use.
169
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170JH/06 Fix buggy handling of autoreply bounce_return_size_limit, and a possible
171 buffer overrun for (non-chunking) other transports.
172
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173JH/07 GnuTLS: Our use of late (post-handshake) certificate verification, under
174 TLS1.3, means that a server rejecting a client certificate is not visible
175 to the client until the first read of encrypted data (typically the
176 response to EHLO). Add detection for that case and treat it as a failed
177 TLS connection attempt, so that the normal retry-in-clear can work (if
178 suitably configured).
179
c05bdbd6 180JB/01 Bug 2375: fix expansions of 822 addresses having comments in local-part
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181 and/or domain. Found and fixed by Jason Betts.
182
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183JH/08 Add hardening against SRV & TLSA lookups the hit CNAMEs (a nonvalid
184 configuration). If a CNAME target was not a wellformed name pattern, a
185 crash could result.
186
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187JH/09 Logging: Fix initial listening-on line for multiple ports for an IP when
188 the OS reports them interleaved with other addresses.
189
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190JH/10 OpenSSL: Fix aggregation of messages. Previously, when PIPELINING was
191 used both for input and for a verify callout, both encrypted, SMTP
192 responses being sent by the server could be lost. This resulted in
193 dropped connections and sometimes bounces generated by a peer sending
194 to this system.
254f38d1 195
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196JH/11 Harden plaintext authenticator against a badly misconfigured client-send
197 string. Previously it was possible to cause undefined behaviour in a
198 library routine (usually a crash). Found by "zerons".
199
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200JH/12 Bug 2384: fix "-bP smtp_receive_timeout". Previously it returned no
201 output.
202
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203JH/13 Bug 2386: Fix builds with Dane under LibreSSL 2.9.0 onward. Some old
204 API was removed, so update to use the newer ones.
205
3c55eef2 206JH/14 Bug 1891: Close the log file if receiving a non-smtp message, without
00c0dd4e 207 any timeout set, is taking a long time. Previously we would hang on to a
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208 rotated logfile "forever" if the input was arriving with long gaps
209 (a previous attempt to fix addressed lack, for a long time, of initial
210 input).
211
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212HS/01 Bug 2390: Use message_id for tempfile creation to avoid races in a
213 shared (NFS) environment. The length of the tempfile name is now
214 4 + 16 ("hdr.$message_exim_id") which might break on file
215 systems which restrict the file name length to lower values.
216 (It was "hdr.$pid".)
217
7d8d08c4 218HS/02 Bug 2390: Use message_id for tempfile creation to avoid races in a
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219 shared (NFS) environment.
220
7d8d08c4 221HS/03 Bug 2392: exigrep does case sensitive *option* processing (as it
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222 did for all versions <4.90). Notably -M, -m, --invert, -I may be
223 affected.
224
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225JH/15 Use unsigned when creating bitmasks in macros, to avoid build errors
226 on some platforms for bit 31.
227
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228JH/16 GnuTLS: rework ciphersuite strings under recent library versions. Thanks
229 to changes apparently associated with TLS1.3 handling some of the APIs
230 previously used were either nonfunctional or inappropriate. Strings
231 like TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM__AEAD:256
232 and TLS1.2:ECDHE_SECP256R1__RSA_SHA256__AES_128_CBC__SHA256:128 replace
233 the previous TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256 .
234 This affects log line X= elements, the $tls_{in,out}_cipher variables,
235 and the use of specific cipher names in the encrypted= ACL condition.
236
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237JH/17 OpenSSL: the default openssl_options now disables ssl_v3.
238
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239JH/18 GnuTLS: fix $tls_out_ocsp under hosts_request_ocsp. Previously the
240 verification result was not updated unless hosts_require_ocsp applied.
241
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242JH/19 Bug 2398: fix listing of a named-queue. Previously, even with the option
243 queue_list_requires_admin set to false, non-admin users were denied the
244 facility.
245
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246JH/20 Bug 2389: fix server advertising of usable certificates, under GnuTLS in
247 directory-of-certs mode. Previously they were advertised despite the
248 documentation.
249
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250JH/21 The smtp transport option "hosts_noproxy_tls" is now unset by default.
251 A single TCP connection by a client will now hold a TLS connection open
252 for multiple message deliveries, by default. Previoud the default was to
253 not do so.
254
59c0959a 255JH/22 The smtp transport option "hosts_try_dane" now enables all hosts by
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256 default. If built with the facility, DANE will be used. The facility
257 SUPPORT_DANE is now enabled in the prototype build Makefile "EDITME".
258
259JH/23 The build default is now for TLS to be included; the SUPPORT_TLS define
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260 is replaced with DISABLE_TLS. Either USE_GNUTLS or (the new) USE_OPENSSL
261 must be defined and you must still, unless you define DISABLE_TLS, manage
262 the the include-dir and library-file requirements that go with that
263 choice. Non-TLS builds are still supported.
59c0959a 264
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265JH/24 Fix duplicated logging of peer name/address, on a transport connection-
266 reject under TFO.
96eb7d2a 267
efad2f41 268JH/25 The smtp transport option "hosts_try_fastopen" now enables all hosts by
4e48d56c 269 default. If the platform supports and has the facility enabled, it will
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270 be requested on all coneections.
271
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272JH/26 The PIPE_CONNECT facility is promoted from experimental status and is now
273 controlled by the build-time option SUPPORT_PIPE_CONNECT.
274
6ee11061 275PP/01 Unbreak heimdal_gssapi, broken in 4.92.
0a5441fc 276
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277JH/27 Bug 2404: Use the main-section configuration option "dsn_from" for
278 success-DSN messages. Previously the From: header was always the default
279 one for these; the option was ignored.
6ee11061 280
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281JH/28 Fix the timeout on smtp response to apply to the whole response.
282 Previously it was reset for every read, so a teergrubing peer sending
283 single bytes within the time limit could extend the connection for a
284 long time. Credit to Qualsys Security Advisory Team for the discovery.
285
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286JH/29 Fix DSN Final-Recipient: field. Previously it was the post-routing
287 delivery address, which leaked information of the results of local
288 forwarding. Change to the original envelope recipient address, per
289 standards.
290
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291JH/30 Bug 2411: Fix DSN generation when RFC 3461 failure notification is
292 requested. Previously not bounce was generated and a log entry of
293 error ignored was made.
294
21aa0597
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295JH/31 Avoid re-expansion in ${sort } expansion. (CVE-2019-13917)
296
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297JH/32 Introduce a general tainting mechanism for values read from the input
298 channel, and values derived from them. Refuse to expand any tainted
299 values, to catch one form of exploit.
300
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301JH/33 Bug 2413: Fix dkim_strict option. Previously the expansion result
302 was unused and the unexpanded text used for the test. Found and
303 fixed by Ruben Jenster.
304
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305JH/34 Fix crash after TLS shutdown. When the TCP/SMTP channel was left open,
306 an attempt to use a TLS library read routine dereffed a nul pointer,
307 causing a segfault.
308
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309JH/35 Bug 2409: filter out-of-spec chars from callout response before using
310 them in our smtp response.
311
9c6881f8 312JH/36 Have the general router option retry_use_local_part default to true when
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313 any of the restrictive preconditions are set (to anything). Previously it
314 was only for check_local user. The change removes one item of manual
315 configuration which is required for proper retries when a remote router
316 handles a subset of addresses for a domain.
317
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318JH/37 Appendfile: when evaluating quota use (non-quota_size_regex) take the file
319 link count into consideration.
320
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321HS/04 Fix handling of very log lines in -H files. If a -<key> <value> line
322 caused the extension of big_buffer, the following lines were ignored.
323
324JH/38 Bug 1395: Teach the DNS negative-cache about TTL value from the SOA in
325 accordance with RFC 2308. Previously there was no expiry, so a longlived
326 receive process (eg. due to ACL delays) versus a short SOA value could
327 surprise.
328
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329HS/05 Handle trailing backslash gracefully. (CVE-2019-15846)
330
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331JH/39 Promote DMARC support to mainline.
332
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333JH/40 Bug 2452: Add a References: header to DSNs.
334
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335JH/41 With GnuTLS 3.6.0 (and later) do not attempt to manage Diffie-Hellman
336 parameters. The relevant library call is documented as "Deprecated: This
337 function is unnecessary and discouraged on GnuTLS 3.6.0 or later. Since
338 3.6.0, DH parameters are negotiated following RFC7919."
339
ab0e957b 340HS/06 Change the default of dnssec_request_domains to "*"
40ed89b3 341
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342JH/42 Bug 2545: Fix CHUNKING for all RCPT commands rejected. Previously we
343 carried on and emitted a BDAT command, even when PIPELINING was not
344 active.
345
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346JH/43 Bug 2465: Fix taint-handling in dsearch lookup. Previously a nontainted
347 buffer was used for the filename, resulting in a trap when tainted
348 arguments (eg. $domain) were used.
349
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350JH/44 With OpenSSL 1.1.1 (onwards) disable renegotiation for TLS1.2 and below;
351 recommended to avoid a possible server-load attack. The feature can be
352 re-enabled via the openssl_options main cofiguration option.
353
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354JH/45 local_scan API: documented the current smtp_printf() call. This changed
355 for version 4.90 - adding a "more data" boolean to the arguments.
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356 Bumped the ABI version number also, this having been missed previously;
357 release versions 4.90 to 4.92.3 inclusive were effectively broken in
358 respect of usage of smtp_printf() by either local_scan code or libraries
359 accessed via the ${dlfunc } expansion item. Both will need coding
360 adjustment for any calls to smtp_printf() to match the new function
361 signature; a FALSE value for the new argument is always safe.
b2d54f83 362
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363JH/46 FreeBSD: fix use of the sendfile() syscall. The shim was not updating
364 the file-offset (which the Linux syscall does, and exim expects); this
365 resulted in an indefinite loop.
366
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367JH/47 ARC: fix crash in signing, triggered when a configuration error failed
368 to do ARC verification. The Authentication-Results: header line added
369 by the configuration then had no ARC item.
370
c5040dfd 371
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372Exim version 4.92
373-----------------
374
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375JH/01 Remove code calling the customisable local_scan function, unless a new
376 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
377
378JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
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379 non-signal-safe functions being used.
380
381JH/03 Bug 2269: When presented with a received message having a stupidly large
382 number of DKIM-Signature headers, disable DKIM verification to avoid
383 a resource-consumption attack. The limit is set at twenty.
9723f966 384
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385JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
386 report of oldest_pass in ${authres } in consequence, and separate out
387 some descriptions of reasons for verification fail.
388
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389JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
390 files in the spool were present and unlocked. A queue-runner could spot
391 them, resulting in a duplicate delivery. Fix that by doing the unlock
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392 after the unlink. Investigation by Tim Stewart. Take the opportunity to
393 add more error-checking on spoolfile handling while that code is being
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394 messed with.
395
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396PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
397 No known attacks, no CVE, this is defensive hardening.
398
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399JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
400 a queue-runner could start a delivery while other operations were ongoing.
401 Cutthrough delivery was a common victim, resulting in duplicate delivery.
402 Found and investigated by Tim Stewart. Fix by using the open message data
403 file handle rather than opening another, and not locally closing it (which
404 releases a lock) for that case, while creating the temporary .eml format
405 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
406
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407JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
408 $sender_verify_failure/$recipient_verify_failure to "random".
409
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410JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
411 legitimate.
412
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413JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
414 Previously this would segfault.
415
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416JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
417 segfault.
418
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419JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
420 like zero, since the resolver should be doing this for us, But we need one
421 as a CNAME but no MX presence gets the CNAME returned; we need to check
422 that doesn't point to an MX to declare it "no MX returned" rather than
423 "error, loop". A new main option is added so the older capability of
424 following some limited number of chain links is maintained.
425
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426JH/12 Add client-ip info to non-pass iprev ${authres } lines.
427
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428JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
429 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
430 now-deprecated earlier definitions used only specified the range up to TLS
431 1.2 (in the older-version library docs).
432
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433JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
434
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435JH/15 Rework TLS client-side context management. Stop using a global, and
436 explicitly pass a context around. This enables future use of TLS for
437 connections to service-daemons (eg. malware scanning) while a client smtp
438 connection is using TLS; with cutthrough connections this is quite likely.
439
5054c4fd 440JH/16 Fix ARC verification to do AS checks in reverse order.
611b1961
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441
442JH/17 Support a "tls" option on the ${readsocket } expansion item.
5054c4fd 443
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444JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
445 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
446 Previously the "utf8" would be re-prepended for every additional message.
447
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448JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
449 Previously thery were accepted, resulting in issues when attempting to
450 forward messages to a non-supporting MTA.
451
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452PP/02 Let -n work with printing macros too, not just options.
453
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454JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
455 one parent address was copied, and bogus data was used at delivery-logging
456 time. Either a crash (after delivery) or bogus log data could result.
457 Discovery and analysis by Tim Stewart.
458
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459PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
460 Previously if the string ended mid-character, we did not insert the
461 promised '?' replacement.
462
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463PP/04 Documentation: current string operators work on bytes, not codepoints.
464
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JH
465JH/21 Change as many as possible of the global flags into one-bit bitfields; these
466 should pack well giving a smaller memory footprint so better caching and
467 therefore performance. Group the declarations where this can't be done so
468 that the byte-sized flag variables are not interspersed among pointer
469 variables, giving a better chance of good packing by the compiler.
470
5455f548
JH
471JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
472 non-null, to avoid issues with sites running BATV. Previously reports were
473 sent with an empty envelope sender so looked like bounces.
474
25beaee4
MK
475JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
476 The ignore_error flag wasn't being returned from the filter subprocess so
477 was not set for later routers. Investigation and fix by Matthias Kurz.
478
7ea1237c 479JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
570cb1bd 480 and a msg:complete for the whole, when a message is manually removed using
7ea1237c
MK
481 -Mrm. Developement by Matthias Kurz, hacked on by JH.
482
ebda598a
JH
483JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
484 a "Gnu special" function, asprintf() in the DB utility binary builds; I
485 hope that is portable enough.
486
570cb1bd
JH
487JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
488 requiring a known-CA anchor certificate; make it now rely entirely on the
489 TLSA as an anchor. Checking the name on the leaf cert against the name
490 on the A-record for the host is still done for TA (but not for EE mode).
491
eb58ddf5
JH
492JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
493 included in delivery lines for non-proxied connections, when compiled with
494 SUPPORT_SOCKS and running with proxy logging enabled.
495
ffbc20ed
MK
496JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
497 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
498 move the existing event to fire before the normal logging of message
499 failure so that custom logging is bracketed by normal logging.
500
4e928780
MK
501JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
502 msg:fail:internal event. Developement by Matthias Kurz.
503
75c121f0 504JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
059f2ace 505 far too small for todays use of crypto signatures stored there. Go all
75c121f0
JH
506 the way to the max DNS message size of 64kB, even though this might be
507 overmuch for IOT constrained device use.
508
e30f4f43
JH
509JH/31 Fix a bad use of a copy function, which could be used to pointlessly
510 copy a string over itself. The library routine is documented as not
511 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
512
a45431fa
JH
513JH/32 For main options check_spool_space and check_inode_space, where the
514 platform supports 64b integers, support more than the previous 2^31 kB
515 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
516 the previous G, M, k.
517
c0fb53b7
JH
518JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
519 $authenticated_fail_id variable on authentication failure. Previously
520 it was unset.
521
6aac3239
JH
522JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
523 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
524 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
525 GNUTLS_SEC_PARAM_MEDIUM.
526
5a2a0989
JH
527JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server
528 side. Previously we would continue as if no SNI had been received.
529
de6f74f2 530JH/36 Harden the handling of string-lists. When a list consisted of a sole
b72f857f
JH
531 "<" character, which should be a list-separator specification, we walked
532 off past the nul-terimation.
533
de6f74f2
JH
534JH/37 Bug 2341: Send "message delayed" warning MDNs (restricted to external
535 causes) even when the retry time is not yet met. Previously they were
536 not, meaning that when (say) an account was over-quota and temp-rejecting,
537 and multiple senders' messages were queued, only one sender would get
538 notified on each configured delay_warning cycle.
539
aa6e77af 540JH/38 Bug 2351: Log failures to extract envelope addresses from message headers.
aaf3e414 541
25fa0868
JH
542JH/39 OpenSSL: clear the error stack after an SSL_accept(). With anon-auth
543 cipher-suites, an error can be left on the stack even for a succeeding
544 accept; this results in impossible error messages when a later operation
545 actually does fail.
546
cb6bd80f
JH
547AM/01 Bug 2359: GnuTLS: repeat lowlevel read and write operations while they
548 return error codes indicating retry. Under TLS1.3 this becomes required.
549
550JH/40 Fix the feature-cache refresh for EXPERIMENTAL_PIPE_CONNECT. Previously
551 it only wrote the new authenticators, resulting in a lack of tracking of
552 peer changes of ESMTP extensions until the next cache flush.
518b70e9 553
56ac062a
JH
554JH/41 Fix the loop reading a message header line to check for integer overflow,
555 and more-often against header_maxsize. Previously a crafted message could
556 induce a crash of the recive process; now the message is cleanly rejected.
557
ae63862b
MA
558JH/42 Bug 2366: Fix the behaviour of the dkim_verify_signers option. It had
559 been totally disabled for all of 4.91. Discovery and fix by "Mad Alex".
560
9723f966 561
bb264f6b
JH
562Exim version 4.91
563-----------------
459fca58 564
c39c8870 565GF/01 DEFER rather than ERROR on redis cluster MOVED response.
bb264f6b
JH
566 When redis_servers is set to a list of > 1 element, and the Redis servers
567 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
568 case of MOVED into a DEFER case instead, thus moving the query onto the
569 next server in the list. For a cluster of N elements, all N servers must
570 be defined in redis_servers.
c39c8870 571
0800ef83
GF
572GF/02 Catch and remove uninitialized value warning in exiqsumm
573 Check for existence of @ARGV before looking at $ARGV[0]
574
459fca58
JH
575JH/01 Replace the store_release() internal interface with store_newblock(),
576 which internalises the check required to safely use the old one, plus
577 the allocate and data copy operations duplicated in both (!) of the
578 extant use locations.
579
944e8b37
JH
580JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
581 modifier. This matches the restriction on the commandline.
582
bbfb5dcd
JH
583JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
584 Previously only the last row was returned.
585
a05d3e34
JH
586JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
587 we assumed that tags in the header were well-formed, and parsed the
588 element content after inspecting only the first char of the tag.
589 Assumptions at that stage could crash the receive process on malformed
590 input.
591
ce93c6d8
JH
592JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
593 While running the DKIM ACL we operate on the Permanent memory pool so that
594 variables created with "set" persist to the DATA ACL. Also (at any time)
595 DNS lookups that fail create cache records using the Permanent pool. But
596 expansions release any allocations made on the current pool - so a dnsdb
597 lookup expansion done in the DKIM ACL releases the memory used for the
598 DNS negative-cache, and bad things result. Solution is to switch to the
599 Main pool for expansions.
600 While we're in that code, add checks on the DNS cache during store_reset,
601 active in the testsuite.
602 Problem spotted, and debugging aided, by Wolfgang Breyha.
603
2577f55f
JH
604JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
605 When none of the hosts presented to a transport match an already-open
606 connection, close it and proceed with the list. Previously we would
607 queue the message. Spotted by Lena with Yahoo, probably involving
608 round-robin DNS.
609
5b6f7658
JH
610JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
611 Previously a spurious "250 OK id=" response was appended to the proper
612 failure response.
613
c11d665d
JH
614JH/08 The "support for" informational output now, which built with Content
615 Scanning support, has a line for the malware scanner interfaces compiled
616 in. Interface can be individually included or not at build time.
e5ba8aa7
JH
617
618JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
619 by the template makefile "src/EDITME". The "STREAM" support for an older
620 ClamAV interface method is removed.
c11d665d 621
ba0e37b1
JH
622JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
623 rows affected is given instead).
624
96508de1
JH
625JH/11 The runtime Berkeley DB library version is now additionally output by
626 "exim -d -bV". Previously only the compile-time version was shown.
627
06fdb9f7
JH
628JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
629 SMTP connection. Previously, when one had more receipients than the
630 first, an abortive onward connection was made. Move to full support for
631 multiple onward connections in sequence, handling cutthrough connection
632 for all multi-message initiating connections.
633
f83a760f
JH
634JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
635 routers. Previously, a multi-recipient message would fail to match the
636 onward-connection opened for the first recipient, and cause its closure.
637
f1fed05b
JH
638JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
639 a timeout on read on a GnuTLS initiating connection, resulting in the
640 initiating connection being dropped. This mattered most when the callout
641 was marked defer_ok. Fix to keep the two timeout-detection methods
642 separate.
643
051d5efa
JH
644JH/15 Relax results from ACL control request to enable cutthrough, in
645 unsupported situations, from error to silently (except under debug)
646 ignoring. This covers use with PRDR, frozen messages, queue-only and
647 fake-reject.
648
cf3cd306
HSHR
649HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
650
744976d4
JH
651JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
652 metadata, resulting in a crash in free().
653
aab9a843 654PP/01 Fix broken Heimdal GSSAPI authenticator integration.
7be14582 655 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
aab9a843 656 Broken also in d185889f4, with init system revamp.
7be14582 657
83d2a861
JH
658JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
659 Previously we abruptly closed the connection after reading a malware-
660 found indication; now we go on to read the "scan ok" response line,
661 and send a quit.
662
6741531c
JH
663JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
664 ACL. Previously, a crash would result.
665
85e03244
JH
666JH/19 Speed up macro lookups during configuration file read, by skipping non-
667 macro text after a replacement (previously it was only once per line) and
668 by skipping builtin macros when searching for an uppercase lead character.
669
c0635b6d
JH
670JH/20 DANE support moved from Experimental to mainline. The Makefile control
671 for the build is renamed.
672
b808677c
JH
673JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
674 was allocated for every new TLS startup, meaning one per message. Fix
675 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
676
6678c382
JH
677JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
678 reported the original. Fix to report (as far as possible) the ACL
679 result replacing the original.
680
dec766a1
WB
681JH/23 Fix memory leak during multi-message connections using STARTTLS under
682 OpenSSL. Certificate information is loaded for every new TLS startup,
683 and the resources needed to be freed.
684
15ae19f9
JH
685JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
686
e6532c4a
JH
687JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
688 was not propagated.
689
2556b3c6
SA
690JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
691 DATA response info to the (existing) per-recipient response info for
692 the "C=" log element. It can have useful tracking info from the
693 destination system. Patch from Simon Arlott.
694
fc8cd529
JH
695JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
696 length value. Previously this would segfault.
697
71bb51e0
HSHR
698HS/02 Support Avast multiline protoocol, this allows passing flags to
699 newer versions of the scanner.
700
e04bfa34
JH
701JH/28 Ensure that variables possibly set during message acceptance are marked
702 dead before release of memory in the daemon loop. This stops complaints
703 about them when the debug_store option is enabled. Discovered specifically
704 for sender_rate_period, but applies to a whole set of variables.
c232fc99
JH
705 Do the same for the queue-runner and queue-list loops, for variables set
706 from spool message files. Do the same for the SMTP per-message loop, for
707 certain variables indirectly set in ACL operations.
e04bfa34 708
ecce6d9a
JH
709JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
710 as a multi-recipient message from a mailinglist manager). The coding had
711 an arbitrary cutoff number of characters while checking for more input;
712 enforced by writing a NUL into the buffer. This corrupted long / fast
713 input. The problem was exposed more widely when more pipelineing of SMTP
714 responses was introduced, and one Exim system was feeding another.
715 The symptom is log complaints of SMTP syntax error (NUL chars) on the
716 receiving system, and refused recipients seen by the sending system
717 (propating to people being dropped from mailing lists).
718 Discovered and pinpointed by David Carter.
719
c9cf9ac4
JH
720JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
721 replaced by the ${authresults } expansion.
722
b3b37076
JH
723JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
724
830832c9
HSHR
725HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
726 allows proper process termination in container environments.
727
f64e8b5f
JH
728JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
729 Previously the "final dot" had a newline after it; ensure it is CR,LF.
730
8f0776b5
JH
731JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
732 and "err_perm", deprecated since 4.83 when the RFC-defined words
733 "temperror" and "permerror" were introduced.
734
857eaf37
JH
735JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
736 transport-filters or DKIM-signing. The restriction was lost in the
737 consolidation of verify-callout and delivery SMTP handling.
5add7dc4 738 Extend the restriction to also cover ARC-signing.
857eaf37 739
c85476e9
JH
740JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
741 in defer=pass mode supply a 450 to the initiator. Previously the message
742 would be spooled.
743
405074ad
PP
744PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
745 tls_require_ciphers is used as before.
746
eb445b04
HSHR
747HS/03 Malware Avast: Better match the Avast multiline protocol. Add
748 "pass_unscanned". Only tmpfails from the scanner are written to
749 the paniclog, as they may require admin intervention (permission
750 denied, license issues). Other scanner errors (like decompression
751 bombs) do not cause a paniclog entry.
ad93c40f 752
d342446f
JH
753JH/36 Fix reinitialisation of DKIM logging variable between messages.
754 Previously it was possible to log spurious information in receive log
755 lines.
756
a28050f8
JH
757JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
758 triggered odd behaviour from Outlook Express clients.
759
ddd16464
PP
760PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
761 suffix list.
762
321ef002
JH
763JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
764 since the IETF WG has not yet settled on that versus the original
765 "bare" representation.
766
3203e7ba
JH
767JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
768 Previously the millisecond value corrupted the output.
769 Fix also for syslog_pid=no and log_selector +pid, for which the pid
770 corrupted the output.
771
bbfb5dcd 772
acfc18c3
PP
773Exim version 4.90
774-----------------
775
776JH/01 Rework error string handling in TLS interface so that the caller in
777 more cases is responsible for logging. This permits library-sourced
778 string to be attached to addresses during delivery, and collapses
779 pairs of long lines into single ones.
780
856d1e16
PP
781PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
782 during configuration. Wildcards are allowed and expanded.
783
b9df1829
JH
784JH/02 Rework error string handling in DKIM to pass more info back to callers.
785 This permits better logging.
786
875512a3
JH
787JH/03 Rework the transport continued-connection mechanism: when TLS is active,
788 do not close it down and have the child transport start it up again on
789 the passed-on TCP connection. Instead, proxy the child (and any
790 subsequent ones) for TLS via a unix-domain socket channel. Logging is
791 affected: the continued delivery log lines do not have any DNSSEC, TLS
5013d912 792 Certificate or OCSP information. TLS cipher information is still logged.
875512a3 793
fc3f96af
JH
794JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
795 identical IP addresses on different listening ports. Will also affect
796 "exiwhat" output.
797
98913c8e
BK
798PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
799 add noisy ifdef guards to special-case this sillyness.
800 Patch from Bernd Kuhls.
801
8d909960
JH
802JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
803 than 255 are no longer allowed.
804
7006ee24
JH
805JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
806 Disable the session-cache too, which might reduce our load. Since we
807 currrectly use a new context for every connection, both as server and
808 client, there is no benefit for these.
809 GnuTLS appears to not support tickets server-side by default (we don't
810 call gnutls_session_ticket_enable_server()) but client side is enabled
811 by default on recent versions (3.1.3 +) unless the PFS priority string
812 is used (3.2.4 +).
813
6e411084
PP
814PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
815 <https://reproducible-builds.org/specs/source-date-epoch/>.
816
4c2471ca
JH
817JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
818 the check for any unsuccessful recipients did not notice the limit, and
819 erroneously found still-pending ones.
820
4e910c01
JH
821JH/08 Pipeline CHUNKING command and data together, on kernels that support
822 MSG_MORE. Only in-clear (not on TLS connections).
823
42055a33
JH
824JH/09 Avoid using a temporary file during transport using dkim. Unless a
825 transport-filter is involved we can buffer the headers in memory for
826 creating the signature, and read the spool data file once for the
827 signature and again for transmission.
828
eeb35890
JH
829JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
830 4.77 as the kernel support then wasn't solid, having issues in 64bit
7d758a6a 831 mode. Now, it's been long enough. Add support for FreeBSD also.
eeb35890 832
b7d3afcf
JH
833JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
834 case where the routing stage had gathered several addresses to send to
835 a host before calling the transport for the first, we previously failed
836 to close down TLS in the old transport process before passing the TCP
837 connection to the new process. The new one sent a STARTTLS command
838 which naturally failed, giving a failed delivery and bloating the retry
839 database. Investigation and fix prototype from Wolfgang Breyha.
840
40525d07
JH
841JH/12 Fix check on SMTP command input synchronisation. Previously there were
842 false-negatives in the check that the sender had not preempted a response
843 or prompt from Exim (running as a server), due to that code's lack of
a5ffa9b4 844 awareness of the SMTP input buffering.
40525d07 845
f33875c3
PP
846PP/04 Add commandline_checks_require_admin option.
847 Exim drops privileges sanely, various checks such as -be aren't a
848 security problem, as long as you trust local users with access to their
849 own account. When invoked by services which pass untrusted data to
850 Exim, this might be an issue. Set this option in main configuration
851 AND make fixes to the calling application, such as using `--` to stop
852 processing options.
853
a5ffa9b4
JH
854JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
855 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
856 responses to those, into a single TLS record each way (this usually means
857 a single packet). As a side issue, smtp_enforce_sync now works on TLS
858 connections.
925ac8e4 859
6600985a
PP
860PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
861 affects you only if you're dancing at the edge of the param size limits.
862 If you are, and this message makes sense to you, then: raise the
863 configured limit or use OpenSSL 1.1. Nothing we can do for older
864 versions.
865
ac4d558b
JH
866JH/14 For the "sock" variant of the malware scanner interface, accept an empty
867 cmdline element to get the documented default one. Previously it was
868 inaccessible.
869
e69636bc
JH
870JH/15 Fix a crash in the smtp transport caused when two hosts in succession
871 are unsuable for non-message-specific reasons - eg. connection timeout,
872 banner-time rejection.
873
a843a57e
JH
874JH/16 Fix logging of delivery remote port, when specified by router, under
875 callout/hold.
876
8e041ae0
PP
877PP/06 Repair manualroute's ability to take options in any order, even if one
878 is the name of a transport.
833c70bc
PP
879 Fixes bug 2140.
880
35a04365
HSHR
881HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
882
4226691b
JH
883JH/17 Change the list-building routines interface to use the expanding-string
884 triplet model, for better allocation and copying behaviour.
885
d185889f
JH
886JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
887 Previously it was constructed the first time a possibly-matching string
888 was met in the configuration file input during startup; now it is done
889 during compilation.
890
0a6c178c
JH
891JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
892 compatible one, to avoid the (poorly documented) possibility of a config
893 file in the working directory redirecting the DB files, possibly correpting
02745400 894 some existing file. CVE-2017-10140 assigned for BDB.
0a6c178c 895
fae8970d
JH
896JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
897 cache-hot. Previously, although the result was properly cached, the
898 initial verify call returned a defer.
899
ad1a76fe 900JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
14de8063
JH
901 the main verify for receipient in uncached-mode.
902
ad1a76fe
JH
903JH/22 Retire historical build files to an "unsupported" subdir. These are
904 defined as "ones for which we have no current evidence of testing".
905
135e9496
JH
906JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
907 if present. Previously it was ignored.
908
f2ed27cf
JH
909JH/24 Start using specified-initialisers in C structure init coding. This is
910 a C99 feature (it's 2017, so now considered safe).
911
7eb0e5d2
JH
912JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
913 if was a fixed-sized field and bitmask ops via macros; it is now more
914 extensible.
915
4f9f4be4
916PP/07 GitHub PR 56: Apply MariaDB build fix.
917 Patch provided by Jaroslav Škarvada.
918
dc4de9cc
PP
919PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
920 during Coverity cleanups [4.87 JH/47]
921 Diagnosis and fix provided by Michael Fischer v. Mollard.
922
ea18931d
JH
923JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
924 the right size to place the terminating semicolon on its own folded
925 line, the header hash was calculated to an incorrect value thanks to
926 the (relaxed) space the fold became.
927
0768462d 928HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
2cee425a
HSHR
929 and confused the parent.
930
848214f7
JH
931JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
932 which could crash as a result. This could lead to undeliverable messages.
933
9e0ed81f
JH
934JH/28 Logging: "next input sent too soon" now shows where input was truncated
935 for log purposes.
936
2540f2f8
JH
937JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
938 matters on fast-turnover and PID-randomising systems, which were getting
939 out-of-order delivery.
940
e5ab0ba9
JH
941JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
942 a possibly-overlapping copy. The symptom was that "Remote host closed
943 connection in response to HELO" was logged instead of the actual 4xx
944 error for the HELO.
945
e99a3a6c
JH
946JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
947 Previously only that bufferd was discarded, resulting in SYMTP command
948 desynchronisation.
949
18067c75
JH
950JH/32 DKIM: when a message has multiple signatures matching an identity given
951 in dkim_verify_signers, run the dkim acl once for each. Previously only
952 one run was done. Bug 2189.
953
72934ba7
JH
954JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
955 "panic the current process" to "deliberately defer". The panic log is
956 still written with the problem list name; the mail and reject logs now
957 get a temp-reject line for the message that was being handled, saying
958 something like "domains check lookup or other defer". The SMTP 451
959 message is still "Temporary local problem".
960
625667b6
JH
961JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
962 A crafted sequence of BDAT commands could result in in-use memory beeing
b488395f
JH
963 freed. CVE-2017-16943.
964
965HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
966 from SMTP input. Previously it was always done; now only done for DATA
967 and not BDAT commands. CVE-2017-16944.
625667b6 968
d21bf202
JH
969JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
970 to the message (such as an overlong header line). Previously this was
971 not done and we did not exit BDAT mode. Followon from the previous item
972 though a different problem.
973
acfc18c3 974
fd047340 975Exim version 4.89
acfc18c3 976-----------------
4c57a40e 977
9427e879 978JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
4c04137d 979 than -2003 did; needs libidn2 in addition to libidn.
fd047340 980
7b283890
JH
981JH/02 The path option on a pipe transport is now expanded before use.
982
4c57a40e
PP
983PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
984 Patch provided by "Björn", documentation fix added too.
985
5d036699
JH
986JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
987 missing a wire-to-host endian conversion.
988
f4630439
JH
989JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
990 close after a BDAT command line could be taken as a following command,
991 giving a synch failure. Fix by only checking for synch immediately
992 before acknowledging the chunk.
993
f988ce57
JS
994PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
995 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
996 macro. Patches provided by Josh Soref.
997
bd8fbe36
JH
998JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
999 Previously we did not; the RFC seems ambiguous and VRFY is not listed
1000 by IANA as a service extension. However, John Klensin suggests that we
1001 should.
1002
1003JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
b895f4b2
JH
1004 the dkim code may be unix-mode line endings rather than smtp wire-format
1005 CRLF, so prepend a CR to any bare LF.
fd047340 1006
bd8fbe36 1007JH/07 Rationalise the coding for callout smtp conversations and transport ones.
902fbd69
JH
1008 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
1009
bd8fbe36
JH
1010JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
1011 the first were themselves being wrongly included in the feed into dkim
1012 processing; with most chunk sizes in use this resulted in an incorrect
1013 body hash calculated value.
1014
eea19017
JH
1015JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
1016 DKIM signature block, for verification. Although advised against by
1017 standards it is specifically not ruled illegal.
1018
44e6651b
JH
1019JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
1020
1021JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
1022 missing a body hash (the bh= tag).
1023
1024JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
1025 It seems that HAProxy sends the Proxy Protocol information in clear and
1026 only then does a TLS startup, so do the same.
1027
1028JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
1029 TCP connections (such as for Spamd) unless the daemon successfully set
1030 Fast Open mode on its listening sockets. This fixes breakage seen on
1031 too-old kernels or those not configured for Fast Open, at the cost of
1032 requiring both directions being enabled for TFO, and TFO never being used
1033 by non-daemon-related Exim processes.
1034
1035JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
1036 endings, at least on the first header line. Try to canonify any that get
1037 past that check, despite the cost.
1038
b6040544
JH
1039JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
1040 now limited to an arbitrary five deep, while parsing addresses with the
1041 strip_excess_angle_brackets option enabled.
1042
f700ea4d
PP
1043PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
1044 instead leave the unprompted TLS handshake in socket buffer for the
1045 TLS library to consume.
1046
da88acae
PP
1047PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
1048
f6ef9370
PP
1049PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
1050
90341c71
JH
1051JH/16 Drop variables when they go out of scope. Memory management drops a whole
1052 region in one operation, for speed, and this leaves assigned pointers
1053 dangling. Add checks run only under the testsuite which checks all
1054 variables at a store-reset and panics on a dangling pointer; add code
1055 explicitly nulling out all the variables discovered. Fixes one known
1056 bug: a transport crash, where a dangling pointer for $sending_ip_address
1057 originally assigned in a verify callout, is re-used.
1058
1ec2ab36
PP
1059PP/06 Drop '.' from @INC in various Perl scripts.
1060
1061PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
1062
1063PP/08 Reduce a number of compilation warnings under clang; building with
1064 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
1065 should be warning-free.
1066
8b2b9480
PP
1067JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
1068
1069HS/01 Fix portability problems introduced by PP/08 for platforms where
1070 realloc(NULL) is not equivalent to malloc() [SunOS et al].
1071
d953610f
HSHR
1072HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
1073 chunk. This allows us to accept broken chunked messages. We need a more
1074 general solution here.
1075
7dc5f827
PP
1076PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
1077 already-broken messages in the queue.
1078
4bb432cb
PP
1079JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
1080
3b1a84c8
PP
1081JH/19 Fix reference counting bug in routing-generated-address tracking.
1082
902fbd69 1083
8d042305
JH
1084Exim version 4.88
1085-----------------
4c57a40e 1086
9094b84b
JH
1087JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
1088 supports it and a size is available (ie. the sending peer gave us one).
8d042305 1089
03d5892b
JH
1090JH/02 The obsolete acl condition "demime" is removed (finally, after ten
1091 years of being deprecated). The replacements are the ACLs
1092 acl_smtp_mime and acl_not_smtp_mime.
1093
4b0fe319
JH
1094JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
1095 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
1096 or even an in-clear connection were permitted. Now, if the host lookup
1097 was dnssec and dane was requested then the host is only used if the
1098 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
1099 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
1100 if one fails this test.
1101 This means that a poorly-configured remote DNS will make it incommunicado;
1102 but it protects against a DNS-interception attack on it.
1103
789f8a4f
JH
1104JH/04 Bug 1810: make continued-use of an open smtp transport connection
1105 non-noisy when a race steals the message being considered.
1106
23bb6982 1107JH/05 If main configuration option tls_certificate is unset, generate a
f59aaaaa 1108 self-signed certificate for inbound TLS connections.
23bb6982 1109
0bd1b1ed 1110JH/06 Bug 165: hide more cases of password exposure - this time in expansions
f42deca9 1111 in rewrites and routers.
0bd1b1ed 1112
20b9a2dc
JH
1113JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
1114 and logged a warning sing 4.83; now they are a configuration file error.
1115
05392bbc
JH
1116JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
1117 (lacking @domain). Apply the same qualification processing as RCPT.
1118
1a6230a3
JH
1119JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
1120
cfab9d68
JH
1121JH/10 Support ${sha256:} applied to a string (as well as the previous
1122 certificate).
1123
98c82a3d
JH
1124JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
1125 a cutthrough deliver is pending, as we always want to make a connection.
1126 This also avoids re-routing the message when later placing the cutthrough
1127 connection after a verify cache hit.
1128 Do not update it with the verify result either.
1129
1130JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
1131 when routing results in more than one destination address.
1132
ae8386f0
JH
1133JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
1134 signing (which inhibits the cutthrough capability). Previously only
1135 the presence of an option was tested; now an expansion evaluating as
1136 empty is permissible (obviously it should depend only on data available
1137 when the cutthrough connection is made).
1138
0d9fa8c0
JH
1139JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
1140 the relevant preceding SMTP command did not note the pipelining mode.
1141
3581f321
JH
1142JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
1143 Previously they were not counted.
1144
ef3a1a30
JH
1145JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
1146 as one having no matching records. Previously we deferred the message
1147 that needed the lookup.
1148
4c04137d 1149JH/17 Fakereject: previously logged as a normal message arrival "<="; now
27b9e5f4
JH
1150 distinguished as "(=".
1151
1435d4b2
JH
1152JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
1153 for missing MX records. Previously it only worked for missing A records.
1154
eea0defe
JB
1155JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
1156
1157JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
1158 after the data-go-ahead and data-ack. Patch from Jason Betts.
860cdda2 1159
4c04137d 1160JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
72a201e2
TM
1161 even for a "none" policy. Patch from Tony Meyer.
1162
1c788856
JH
1163JH/22 Fix continued use of a connection for further deliveries. If a port was
1164 specified by a router, it must also match for the delivery to be
1165 compatible.
1166
e3b1f624
JH
1167JH/23 Bug 1874: fix continued use of a connection for further deliveries.
1168 When one of the recipients of a message was unsuitable for the connection
1169 (has no matching addresses), we lost track of needing to mark it
1170 deferred. As a result mail would be lost.
1171
a57ce043
JH
1172JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
1173
f59aaaaa 1174JH/25 Decoding ACL controls is now done using a binary search; the source code
2d009132
JH
1175 takes up less space and should be simpler to maintain. Merge the ACL
1176 condition decode tables also, with similar effect.
d7bed771 1177
d1f9fb42
JH
1178JH/26 Fix problem with one_time used on a redirect router which returned the
1179 parent address unchanged. A retry would see the parent address marked as
1180 delivered, so not attempt the (identical) child. As a result mail would
1181 be lost.
1182
92b0827a
JH
1183JH/27 Fix a possible security hole, wherein a process operating with the Exim
1184 UID can gain a root shell. Credit to http://www.halfdog.net/ for
1185 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
1186 itself :(
1187
ddf1b11a
JH
1188JH/28 Enable {spool,log} filesystem space and inode checks as default.
1189 Main config options check_{log,spool}_{inodes,space} are now
1190 100 inodes, 10MB unless set otherwise in the configuration.
1191
3cc3f762
JH
1192JH/29 Fix the connection_reject log selector to apply to the connect ACL.
1193 Previously it only applied to the main-section connection policy
1194 options.
1195
ae5afa61
JH
1196JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
1197
317e40ac
PP
1198PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
1199 by me. Added RFC7919 DH primes as an alternative.
1200
8b0fb68e
PP
1201PP/02 Unbreak build via pkg-config with new hash support when crypto headers
1202 are not in the system include path.
1203
ad7fc6eb 1204JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
f59aaaaa 1205 GnuTLS, when a session startup failed (eg because the client disconnected)
ad7fc6eb
JH
1206 Exim did stdio operations after fclose. This was exposed by a recent
1207 change which nulled out the file handle after the fclose.
ad7fc6eb 1208
ee5b1e28
JH
1209JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
1210 signed directly by the cert-signing cert, rather than an intermediate
1211 OCSP-signing cert. This is the model used by LetsEncrypt.
1212
5ddc9771
JH
1213JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
1214
8d73599f
JH
1215HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
1216 an incoming connection.
1217
446415f5
HSHR
1218HS/02 Bug 1802: Do not half-close the connection after sending a request
1219 to rspamd.
1220
8e53a4fc
HSHR
1221HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
1222 fallback to "prime256v1".
8d042305 1223
87cb4a16 1224JH/34 SECURITY: Use proper copy of DATA command in error message.
4c57a40e 1225 Could leak key material. Remotely exploitable. CVE-2016-9963.
87cb4a16
JH
1226
1227
0d9b78be
JH
1228Exim version 4.87
1229-----------------
4c57a40e 1230
82d14d6a
JH
1231JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
1232 and 3.4.4 - once the server is enabled to respond to an OCSP request
1233 it does even when not requested, resulting in a stapling non-aware
1234 client dropping the TLS connection.
0d9b78be 1235
6c6d6e48
TF
1236TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
1237 support variable-length bit vectors. No functional change.
1238
ac881e27
TF
1239TF/02 Improve the consistency of logging incoming and outgoing interfaces.
1240 The I= interface field on outgoing lines is now after the H= remote
1241 host field, same as incoming lines. There is a separate
1242 outgoing_interface log selector which allows you to disable the
1243 outgoing I= field.
1244
c8899c20
JH
1245JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
1246 If not running log_selector +smtp_connection the mainlog would be held
1247 open indefinitely after a "too many connections" event, including to a
1248 deleted file after a log rotate. Leave the per net connection logging
1249 leaving it open for efficiency as that will be quickly detected by the
1250 check on the next write.
1251
f1b81d81
HSHR
1252HS/01 Bug 1671: Fix post transport crash.
1253 Processing the wait-<transport> messages could crash the delivery
1254 process if the message IDs didn't exist for some reason. When
1255 using 'split_spool_directory=yes' the construction of the spool
1256 file name failed already, exposing the same netto behaviour.
1257
f38917cc
JH
1258JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
1259 mime_regex ACL conditions.
1260
895fbaf2
JH
1261JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
1262 to DSN fail messages (bounces): remote IP, remote greeting, remote response
1263 to HELO, local diagnostic string.
1264
805bb5c3
JH
1265JH/05 Downgrade message for a TLS-certificate-based authentication fail from
1266 log line to debug. Even when configured with a tls authenticator many
1267 client connections are expected to not authenticate in this way, so
1268 an authenticate fail is not an error.
1269
56c2a7be
HSHR
1270HS/02 Add the Exim version string to the process info. This way exiwhat
1271 gives some more detail about the running daemon.
1272
4c04137d 1273JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
14b3c5bc
JH
1274 matter for fast-change records such as DNSBLs.
1275
6f6dedcc
JH
1276JH/07 Bug 1678: Always record an interface option value, if set, as part of a
1277 retry record, even if constant. There may be multiple transports with
1278 different interface settings and the retry behaviour needs to be kept
1279 distinct.
1280
0f557e90
JH
1281JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
1282
1283JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
1284
ec0eb1a3
JH
1285JH/10 Bug 840: fix log_defer_output option of pipe transport
1286
41e93589
JH
1287JH/11 Bug 830: use same host for all RCPTS of a message, even under
1288 hosts_randomize. This matters a lot when combined with mua_wrapper.
1289
98b98887 1290JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
376d2ec0
JH
1291 ${quote_pgsql:<string>} operator.
1292
98b98887
JH
1293JH/13 Bug 1708: avoid misaligned access in cached lookup.
1294
858e91c2
JH
1295JH/14 Change header file name for freeradius-client. Relevant if compiling
1296 with Radius support; from the Gentoo tree and checked under Fedora.
1297
1298JH/15 Bug 1712: Introduce $prdr_requested flag variable
1299
6ff55e50
JH
1300JH/16 Bug 1714: Permit an empty string as expansion result for transport
1301 option transport_filter, meaning no filtering.
1302
3b957582
JB
1303JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
1304
23f3dc67
JH
1305JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
1306 defaults to "*" (all hosts). The variable is now available when not built
4c04137d 1307 with TLS, default unset, mainly to enable keeping the testsuite sane.
23f3dc67
JH
1308 If a server certificate is not supplied (via tls_certificate) an error is
1309 logged, and clients will find TLS connections fail on startup. Presumably
1310 they will retry in-clear.
1311 Packagers of Exim are strongly encouraged to create a server certificate
1312 at installation time.
1313
240c288f
JH
1314HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
1315 with the $config_file variable.
1316
5ef5dd52
JB
1317JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
1318 in transport context, after the attempt, and per-recipient. The latter type
1319 is per host attempted. The event data is the error message, and the errno
1320 information encodes the lookup type (A vs. MX) used for the (first) host,
4c04137d 1321 and the trailing two digits of the smtp 4xx response.
5ef5dd52 1322
e161710d
GF
1323GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
1324 to write to mainlog (or rejectlog, paniclog) in the window between file
1325 creation and permissions/ownership being changed. Particularly affects
1326 installations where exicyclog is run as root, rather than exim user;
1327 result is that the running daemon panics and dies.
1328
a159f203
JH
1329JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
1330
7f06582c
JH
1331JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
1332 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
1333 "pri" and "weight". Note that the previous implicit priority given by the
1334 list order is no longer honoured.
1335
4c04137d 1336JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
abe1010c
JH
1337 for DKIM processing.
1338
f0989ec0
JH
1339JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
1340 by defining SUPPORT_SOCKS.
74f150bf 1341
cee5f132
JH
1342JH/26 Move PROXY support from Experimental to mainline, enabled for a build
1343 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
e6d2a989
JH
1344 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
1345 variables are renamed to proxy_{local,external}_{address,port}.
cee5f132 1346
8c5d388a
JH
1347JH/27 Move Internationalisation support from Experimental to mainline, enabled
1348 for a build by defining SUPPORT_I18N
1349
2d8d625b
JH
1350JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
1351 of the query string, and make ${quote_redis:} do that quoting.
1352
0cbf2b82
JH
1353JH/29 Move Events support from Experimental to mainline, enabled by default
1354 and removable for a build by defining DISABLE_EVENT.
1355
f2f2c91b
JH
1356JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
1357
ce325893
JH
1358JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
1359 cached by the daemon.
1360
de78e2d5
JH
1361JH/32 Move Redis support from Experimental to mainline, enabled for a build
1362 by defining LOOKUP_REDIS. The libhiredis library is required.
1363
379ba7d0
JH
1364JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
1365 keys are given for lookup.
1366
f444c2c7
JH
1367JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
1368 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
07c73177
JH
1369 only supported when built with TLS support. The PolarSSL SHA routines
1370 are still used when the TLS library is too old for convenient support.
f444c2c7 1371
a57b6200
JH
1372JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
1373 openssl_options), for security. OpenSSL forces this from version 1.1.0
1374 server-side so match that on older versions.
1375
07c73177 1376JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
fa01e4f8 1377 allocation for $value could be released as the expansion processing
07c73177 1378 concluded, but leaving the global pointer active for it.
fa01e4f8 1379
4f6ae5c3
JH
1380JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
1381 and to use the domains and local_parts ACL conditions.
1382
1bc460a6
JH
1383JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
1384 incorrectly not doubled on cutthrough transmission, hence seen as a
1385 body-termination at the receiving system - resulting in truncated mails.
62ac2eb7 1386 Commonly the sender saw a TCP-level error, and retransmitted the message
1bc460a6
JH
1387 via the normal store-and-forward channel. This could result in duplicates
1388 received - but deduplicating mailstores were liable to retain only the
1389 initial truncated version.
1390
ab9152ff 1391JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
df3def24 1392
67e87fcf
JH
1393JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1394
ab9152ff
JH
1395JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1396 we're in there, support oversigning also; bug 1309.
1397
af483912
JH
1398JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1399
bc3c7bb7 1400HS/04 Add support for keep_environment and add_environment options.
df3def24 1401
13559da6
JH
1402JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1403 either intentional arithmetic overflow during PRNG, or testing config-
1404 induced overflows.
1405
59eaad2b
JH
1406JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1407 delivery resulted in actual delivery. Cancel cutthrough before DATA
1408 stage.
1409
f9334a28
JH
1410JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1411 rejects a recipient: pass the reject to the originator.
1412
dc8091e7
JH
1413JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1414 Many were false-positives and ignorable, but it's worth fixing the
1415 former class.
1416
dfe7d917
JH
1417JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1418 for the new environment-manipulation done at startup. Move the routines
1419 from being local to tls.c to being global via the os.c file.
1420
93cc2d6e
JH
1421JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1422 an extract embedded as result-arg for a map, the first arg for extract
1423 is unavailable so we cannot tell if this is a numbered or keyed
1424 extraction. Accept either.
1425
13559da6 1426
9c695f6d
JH
1427Exim version 4.86
1428-----------------
4c57a40e 1429
9c695f6d
JH
1430JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1431 expanded.
1432
506900af
JH
1433JH/02 The smtp transport option "multi_domain" is now expanded.
1434
ad07e9ad
JH
1435JH/03 The smtp transport now requests PRDR by default, if the server offers
1436 it.
1437
01a4a5c5 1438JH/04 Certificate name checking on server certificates, when exim is a client,
b3ef41c9 1439 is now done by default. The transport option tls_verify_cert_hostnames
01a4a5c5
JH
1440 can be used to disable this per-host. The build option
1441 EXPERIMENTAL_CERTNAMES is withdrawn.
1442
cb1d7830 1443JH/05 The value of the tls_verify_certificates smtp transport and main options
0e0f3f56 1444 default to the word "system" to access the system default CA bundle.
cb1d7830
JH
1445 For GnuTLS, only version 3.0.20 or later.
1446
610ff438 1447JH/06 Verification of the server certificate for a TLS connection is now tried
6d580f19
JH
1448 (but not required) by default. The verification status is now logged by
1449 default, for both outbound TLS and client-certificate supplying inbound
1450 TLS connections
610ff438 1451
f926e272
JH
1452JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1453 sites use this now.
1454
50dc7409
JH
1455JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1456 Status Notification (bounce) messages are now MIME format per RFC 3464.
1457 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1458 under the control of the dsn_advertise_hosts option, and routers may
1459 have a dsn_lasthop option.
1460
0f0c8159
JH
1461JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1462 default, modifiable by a malware= option. The list separator for
23763898 1463 the options can now be changed in the usual way. Bug 68.
4e71661f 1464
1ad6489e
JH
1465JH/10 The smtp_receive_timeout main option is now expanded before use.
1466
aeaf5db3
JH
1467JH/11 The incoming_interface log option now also enables logging of the
1468 local interface on delivery outgoing connections.
1469
5032d1cf
JH
1470JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1471 if the interface and destination host and port all match.
1472
7e8360e6
JH
1473JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1474 /defer_ok option.
1475
c5f280e2
AL
1476JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1477 Patch from Andrew Lewis.
1478
fd4d8871 1479JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
dc7b3d36 1480 now supports optional time-restrictions, weighting, and priority
fd4d8871
R
1481 modifiers per server. Patch originally by <rommer@active.by>.
1482
1483JH/16 The spamd_address main option now supports a mixed list of local
2aad5761
JH
1484 and remote servers. Remote servers can be IPv6 addresses, and
1485 specify a port-range.
fd4d8871 1486
23763898
JH
1487JH/17 Bug 68: The spamd_address main option now supports an optional
1488 timeout value per server.
1489
2ad78978
JH
1490JH/18 Bug 1581: Router and transport options headers_add/remove can
1491 now have the list separator specified.
1492
8a512ed5 1493JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
cfab9d68 1494 option values.
8a512ed5 1495
82c0c8ea 1496JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
f69979cf
JH
1497 under OpenSSL.
1498
cc00f4af
JH
1499JH/21 Support for the A6 type of dns record is withdrawn.
1500
82c0c8ea
JH
1501JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1502 rather than the verbs used.
1503
b980ed83
JH
1504JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1505 from 255 to 1024 chars.
1506
6c9ed72e
JH
1507JH/24 Verification callouts now attempt to use TLS by default.
1508
cfab9d68 1509HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
99c1bb4e 1510 are generic router options now. The defaults didn't change.
50dc7409 1511
f846c8f5
JH
1512JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1513 Original patch from Alexander Shikoff, worked over by JH.
1514
fd4c285c
HSHR
1515HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1516 files if ZCAT_COMMAND is not executable.
1517
4c04137d 1518JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
fd7f7910 1519
d2a2c69b
JH
1520JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1521
8241d8dd
JH
1522JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1523 Normally benign, it bites when the pair was led to by a CNAME;
4c04137d 1524 modern usage is to not canonicalize the domain to a CNAME target
8241d8dd
JH
1525 (and we were inconsistent anyway for A-only vs AAAA+A).
1526
1f12df4d
JH
1527JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1528
1f155f8e
JH
1529JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1530 when evaluating $sender_host_dnssec.
1531
1705dd20
JH
1532JH/31 Check the HELO verification lookup for DNSSEC, adding new
1533 $sender_helo_dnssec variable.
1534
038597d2
PP
1535JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1536
474f71bf
JH
1537JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1538
7137ca4b
JH
1539JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1540
dcb1095c
JH
1541JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1542 documented as working, but never had. Support all but $spam_report.
1543
2f460950
JH
1544JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1545 added for tls authenticator.
1546
2f680c0c
HSHR
1547HS/03 Add perl_taintmode main config option
1548
9c695f6d 1549
e449c3b0
TL
1550Exim version 4.85
1551-----------------
4c57a40e 1552
e449c3b0
TL
1553TL/01 When running the test suite, the README says that variables such as
1554 no_msglog_check are global and can be placed anywhere in a specific
1555 test's script, however it was observed that placement needed to be near
1556 the beginning for it to behave that way. Changed the runtest perl
1557 script to read through the entire script once to detect and set these
1558 variables, reset to the beginning of the script, and then run through
1559 the script parsing/test process like normal.
1560
ac20058f
TL
1561TL/02 The BSD's have an arc4random API. One of the functions to induce
1562 adding randomness was arc4random_stir(), but it has been removed in
1563 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1564 function when detected.
1565
a9b8ec8b
JH
1566JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1567 cause callback expansion.
1568
6286d7c4
TL
1569TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1570 syntax errors in an expansion can be treated as a string instead of
1571 logging or causing an error, due to the internal use of bool_lax
1572 instead of bool when processing it.
1573
0f06b4f2 1574JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
d567a64d
JH
1575 server certificates when making smtp deliveries.
1576
be36e572
JH
1577JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1578
ac4ef9bd
JH
1579JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1580
0eb51736
TL
1581TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1582
c713ca4b
TL
1583TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1584 Merged patch from Sebastian Wiedenroth.
e449c3b0 1585
bd21a787
WB
1586JH/05 Fix results-pipe from transport process. Several recipients, combined
1587 with certificate use, exposed issues where response data items split
1588 over buffer boundaries were not parsed properly. This eventually
1589 resulted in duplicates being sent. This issue only became common enough
4c04137d 1590 to notice due to the introduction of connection certificate information,
bd21a787
WB
1591 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1592
8bc732e8
JH
1593JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1594 size buffer was used, resulting in syntax errors when an expansion
1595 exceeded it.
1596
a7fec7a7
JH
1597JH/07 Add support for directories of certificates when compiled with a GnuTLS
1598 version 3.3.6 or later.
1599
4c04137d 1600JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
774ef2d7
JH
1601 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1602 both become "event_action", the variables become $event_name, $event_data
aec45841 1603 and $event_defer_errno. There is a new variable $verify_mode, usable in
723fe533
JH
1604 routers, transports and related events. The tls:cert event is now also
1605 raised for inbound connections, if the main configuration event_action
1606 option is defined.
774ef2d7 1607
eca4debb
TL
1608TL/06 In test suite, disable OCSP for old versions of openssl which contained
1609 early OCSP support, but no stapling (appears to be less than 1.0.0).
1610
8d692470
JH
1611JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1612 server certificate names available under the smtp transport option
1613 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1614 matches.
1615
e9477a08
JH
1616JH/10 Time-related extraction expansions from certificates now use the main
1617 option "timezone" setting for output formatting, and are consistent
1618 between OpenSSL and GnuTLS compilations. Bug 1541.
1619
ad4c5ff9
JH
1620JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1621 encoded parameter in the incoming message. Bug 1558.
8dea5edf
JH
1622
1623JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1624 include certificate info, eximon was claiming there were spoolfile
1625 syntax errors.
1626
3394b36a 1627JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
8dea5edf
JH
1628
1629JH/14 Log delivery-related information more consistently, using the sequence
1630 "H=<name> [<ip>]" wherever possible.
1631
3394b36a
TL
1632TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1633 are problematic for Debian distribution, omit them from the release
1634 tarball.
1635
ad4c5ff9
JH
1636JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1637
4c04137d 1638JH/16 Fix string representation of time values on 64bit time_t architectures.
ad4c5ff9
JH
1639 Bug 1561.
1640
1641JH/17 Fix a null-indirection in certextract expansions when a nondefault
1642 output list separator was used.
1643
8bc732e8 1644
1f0ebb98
TL
1645Exim version 4.84
1646-----------------
09728d20
TL
1647TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1648 checkers that were complaining about end of non-void function with no
1649 return.
1f0ebb98 1650
a612424f 1651JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
4c04137d 1652 This was a regression introduced in 4.83 by another bugfix.
a612424f
JH
1653
1654JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1655
1656TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
a9b8ec8b 1657 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
a612424f 1658
1f0ebb98 1659
c0e56233
TF
1660Exim version 4.83
1661-----------------
1662
1663TF/01 Correctly close the server side of TLS when forking for delivery.
1664
1665 When a message was received over SMTP with TLS, Exim failed to clear up
1666 the incoming connection properly after forking off the child process to
1667 deliver the message. In some situations the subsequent outgoing
1668 delivery connection happened to have the same fd number as the incoming
1669 connection previously had. Exim would try to use TLS and fail, logging
1670 a "Bad file descriptor" error.
1671
7245734e
TF
1672TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1673 utilities have not been installed.
1674
fd5dad68
JH
1675JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1676 temporary space as the ACL may create new global variables.
1677
5428a946
TL
1678TL/01 LDAP support uses per connection or global context settings, depending
1679 upon the detected version of the libraries at build time.
1680
a3c86431
TL
1681TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1682 to extract and use the src ip:port in logging and expansions as if it
8ded8589
TL
1683 were a direct connection from the outside internet. PPv2 support was
1684 updated based on HAProxy spec change in May 2014.
a3c86431 1685
aa26e137
JH
1686JH/02 Add ${listextract {number}{list}{success}{fail}}.
1687
5a1b8443
WB
1688TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1689 Properly escape header and check for NULL return.
1690
72c9e342
PP
1691PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1692 not dns_use_dnssec.
1693
76f44207
WB
1694JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1695
770747fd
MFM
1696TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1697 characters in header names, implemented as a verify condition.
1698 Contributed by Michael Fischer v. Mollard.
1699
8ddef691 1700TL/05 Rename SPF condition results err_perm and err_temp to standardized
982650ec
TL
1701 results permerror and temperror. Previous values are deprecated but
1702 still accepted. In a future release, err_perm and err_temp will be
1703 completely removed, which will be a backward incompatibility if the
1704 ACL tests for either of these two old results. Patch contributed by
8ddef691 1705 user bes-internal on the mailing list.
c0e56233 1706
b9c2e32f
AR
1707JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1708
e45a1c37
JH
1709JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1710 selectors, in both main and reject logs.
1711
67d81c10
JH
1712JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1713 failed delivery.
1714
b1f8e4f8
JH
1715JH/07 Add malware type "sock" for talking to simple daemon.
1716
511a6c14 1717JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
511a6c14
JH
1718
1719JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1720 routers/transports under cutthrough routing.
214042d2 1721
51c7471d
JH
1722JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1723 numbers. Touch up "bool" conditional to keep the same definition.
1724
3695be34
TL
1725TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1726
1e06383a
TL
1727JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1728
76146973
JH
1729JH/12 Expand items in router/transport headers_add or headers_remove lists
1730 individually rather than the list as a whole. Bug 1452.
1731
1732 Required for reasonable handling of multiple headers_ options when
1733 they may be empty; requires that headers_remove items with embedded
1734 colons must have them doubled (or the list-separator changed).
1735
8c8b8274
TL
1736TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1737 view the policy declared in the DMARC record. Currently, $dmarc_status
1738 is a combined value of both the record presence and the result of the
1739 analysis.
b1f8e4f8 1740
35aba663
JH
1741JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1742
8c51eead 1743JH/14 New options dnssec_request_domains, dnssec_require_domains on the
578897ea
JH
1744 dnslookup router and the smtp transport (applying to the forward
1745 lookup).
8c51eead 1746
deae092e
HS
1747TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1748 of ldap servers used for a specific lookup. Patch provided by Heiko
1749 Schlichting.
35aba663 1750
fd3b6a4a 1751JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
4e0983dc 1752 New variable $lookup_dnssec_authenticated for observability.
fd3b6a4a 1753
8d91c6dc
LT
1754TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1755 Patch submitted by Lars Timman.
1756
2b4a568d
JH
1757JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1758
d2af03f4
HS
1759TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1760 Requires trusted mode and valid format message id, aborts otherwise.
1761 Patch contributed by Heiko Schlichting.
1762
9d1c15ef
JH
1763JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1764 certextract with support for various fields. Bug 1358.
1765
44662487
JH
1766JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1767 is requested by default, modifiable by smtp transport option
6a8a60e0
JH
1768 hosts_request_ocsp.
1769
ed3bba5f 1770JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
6a8a60e0 1771 operate on certificate variables to give certificate fingerprints
9ef9101c 1772 Also new ${sha256:cert_variable}.
44662487 1773
8ccd00b1
JH
1774JH/23 The PRDR feature is moved from being Experimental into the mainline.
1775
8ded8589
TL
1776TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1777 Christian Aistleitner.
1778
f2de3a33
JH
1779JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1780
6eb02f88
TL
1781TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1782 file. Patch from Wolfgang Breyha.
1783
00bff6f6
JH
1784JH/25 Expand the coverage of the delivery $host and $host_address to
1785 client authenticators run in verify callout. Bug 1476.
1786
071c51f7
JH
1787JH/26 Port service names are now accepted for tls_on_connect_ports, to
1788 align with daemon_smtp_ports. Bug 72.
1789
a6d4c44e
TF
1790TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1791 support and error reporting did not work properly.
1792
3ae173e7
ACK
1793TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1794 and is readable. Patch from Andrew Colin Kissa.
1795
c13d09b8
TL
1796TL/14 Enhance documentation of ${run expansion and how it parses the
1797 commandline after expansion, particularly in the case when an
1798 unquoted variable expansion results in an empty value.
1799
0df4ab80
JH
1800JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1801
66be95e0
PP
1802PP/02 Fix internal collision of T_APL on systems which support RFC3123
1803 by renaming away from it. Addresses GH issue 15, reported by
1804 Jasper Wallace.
1805
1bd0d12b
JH
1806JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1807
0de7239e
TL
1808TL/15 SECURITY: prevent double expansion in math comparison functions
1809 (can expand unsanitized data). Not remotely exploitable.
1810 CVE-2014-2972
1811
fd3b6a4a 1812
2c422e6f 1813Exim version 4.82
98a90c36
PP
1814-----------------
1815
1816PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1817
12f69989
PP
1818PP/02 Make -n do something, by making it not do something.
1819 When combined with -bP, the name of an option is not output.
1820
54c90be1
PP
1821PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1822 by GnuTLS.
1823
1f4a55da
PP
1824PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1825 $sender_host_name and config options to manage this, and basic check
1826 routines.
1827
13363eba 1828PP/05 DSCP support for outbound connections and control modifier for inbound.
36a3ae5f 1829
66645890 1830PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
e402235f
PP
1831 (Only plugin which currently uses this is kerberos4, which nobody should
1832 be using, but we should make it available and other future plugins might
1833 conceivably use it, even though it would break NAT; stuff *should* be
1834 using channel bindings instead).
66645890 1835
a3fb9793 1836PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
f4ee74ac
PP
1837 name; added for Sendmail compatibility; requires admin caller.
1838 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1839 just ignore it); requires trusted caller.
a3fb9793 1840 Also parse but ignore: -Ac -Am -X<logfile>
f4ee74ac 1841 Bugzilla 1117.
a3fb9793 1842
d27f98fe 1843TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
98a90c36 1844
6822b909
TL
1845TL/02 Add +smtp_confirmation as a default logging option.
1846
e7568d51
TL
1847TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1848 Patch by Magnus Holmgren from 2007-02-20.
1849
ae0e32ee 1850TL/04 Bugzilla 1281 - Spec typo.
ca0ff207 1851 Bugzilla 1283 - Spec typo.
97f42f10 1852 Bugzilla 1290 - Spec grammar fixes.
ca0ff207
TL
1853
1854TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
ae0e32ee 1855
e2658fff
TL
1856TL/06 Add Experimental DMARC support using libopendmarc libraries.
1857
83712b39
TL
1858TL/07 Fix an out of order global option causing a segfault. Reported to dev
1859 mailing list by by Dmitry Isaikin.
1860
976b7e9f
JH
1861JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1862
be4a1376
JH
1863JH/02 Support "G" suffix to numbers in ${if comparisons.
1864
ec4b68e5
PP
1865PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1866
d7148a07
NM
1867NM/01 Bugzilla 1197 - Spec typo
1868 Bugzilla 1196 - Spec examples corrections
ec4b68e5 1869
585121e2 1870JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
ec4b68e5 1871
2519e60d
TL
1872PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1873 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1874 function.
a5f239e4 1875
13d08c90
PP
1876PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1877 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1878
bef3ea7f
JH
1879JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1880 "acl {{name}{arg}...}", and optional args on acl condition
1881 "acl = name arg..."
a5f239e4 1882
846726c5
JH
1883JH/05 Permit multiple router/transport headers_add/remove lines.
1884
3a796370
JH
1885JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1886
ea722490 1887JH/07 Avoid using a waiting database for a single-message-only transport.
8b260705
PP
1888 Performance patch from Paul Fisher. Bugzilla 1262.
1889
b1b05573
JH
1890JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1891 Bugzilla 884.
1892
362145b5
JH
1893JH/09 Add $headers_added variable, with content from use of ACL modifier
1894 add_header (but not yet added to the message). Bugzilla 199.
1895
3c0a92dc
JH
1896JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1897 Pulled from Bugzilla 817 by Wolfgang Breyha.
1898
6d7c6175
PP
1899PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1900 CVE-2012-5671
e78e6ecf 1901 (nb: this is the same fix as in Exim 4.80.1)
6d7c6175 1902
6f123593
JH
1903JH/11 Add A= logging on delivery lines, and a client_set_id option on
1904 authenticators.
1905
c8e2fc1e
JH
1906JH/12 Add optional authenticated_sender logging to A= and a log_selector
1907 for control.
1908
005ac57f
PP
1909PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1910
3f1df0e3
PP
1911PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1912 advertise SMTP AUTH mechanism to us, instead of a generic
1913 protocol violation error. Also, make Exim more robust to bad
1914 data from the Dovecot auth socket.
1915
67bd1ab3
TF
1916TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1917
1918 When a queue runner is handling a message, Exim first routes the
1919 recipient addresses, during which it prunes them based on the retry
1920 hints database. After that it attempts to deliver the message to
1921 any remaining recipients. It then updates the hints database using
1922 the retry rules.
1923
1924 So if a recipient address works intermittently, it can get repeatedly
1925 deferred at routing time. The retry hints record remains fresh so the
1926 address never reaches the final cutoff time.
1927
1928 This is a fairly common occurrence when a user is bumping up against
1929 their storage quota. Exim had some logic in its local delivery code
1930 to deal with this. However it did not apply to per-recipient defers
1931 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1932
1ddeb334
TF
1933 This change adds a proper retry rule check during routing so that the
1934 final cutoff time is checked against the message's age. We only do
1935 this check if there is an address retry record and there is not a
1936 domain retry record; this implies that previous attempts to handle
1937 the address had the retry_use_local_parts option turned on. We use
1938 this as an approximation for the destination being like a local
1939 delivery, as in LMTP.
67bd1ab3
TF
1940
1941 I suspect this new check makes the old local delivery cutoff check
1942 redundant, but I have not verified this so I left the code in place.
1943
326cdc37
TF
1944TF/02 Correct gecos expansion when From: is a prefix of the username.
1945
1946 Test 0254 submits a message to Exim with the header
1947
1948 Resent-From: f
1949
1950 When I ran the test suite under the user fanf2, Exim expanded
1951 the header to contain my full name, whereas it should have added
1952 a Resent-Sender: header. It erroneously treats any prefix of the
1953 username as equal to the username.
1954
1955 This change corrects that bug.
1956
f62514b3
GF
1957GF/01 DCC debug and logging tidyup
1958 Error conditions log to paniclog rather than rejectlog.
1959 Debug lines prefixed by "DCC: " to remove any ambiguity.
1960
eb505532
TF
1961TF/03 Avoid unnecessary rebuilds of lookup-related code.
1962
14c7b357
PP
1963PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1964 Bug spotted by Jeremy Harris; was flawed since initial commit.
1965 Would have resulted in OCSP responses post-SNI triggering an Exim
1966 NULL dereference and crash.
1967
94eaf700
PP
1968JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1969
6f5a440a
PP
1970PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1971 Bug detection, analysis and fix by Samuel Thibault.
1972 Bugzilla 1331, Debian bug #698092.
1973
514ee161
SC
1974SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1975
fd98a5c6
JH
1976JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1977 Server implementation by Todd Lyons, client by JH.
1978 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1979 config variable "prdr_enable" controls whether the server
1980 advertises the facility. If the client requests PRDR a new
1981 acl_data_smtp_prdr ACL is called once for each recipient, after
1982 the body content is received and before the acl_smtp_data ACL.
4c04137d 1983 The client is controlled by both of: a hosts_try_prdr option
fd98a5c6
JH
1984 on the smtp transport, and the server advertisement.
1985 Default client logging of deliveries and rejections involving
1986 PRDR are flagged with the string "PRDR".
1987
035c7f1e
PP
1988PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1989 fclose(). Diagnosis by Todd Lyons.
1990
ff284120
PP
1991PP/17 Update configure.default to handle IPv6 localhost better.
1992 Patch by Alain Williams (plus minor tweaks).
1993 Bugzilla 880.
1994
26e72755
PP
1995PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1996 This is now consistent with GnuTLS, and is now documented: the
1997 previous undocumented portable approach to treating the option as
1998 unset was to force an expansion failure. That still works, and
1999 an empty string is now equivalent.
2000
0fbd9bff
PP
2001PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
2002 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
2003 not performing validation itself.
2004
700d22f3
PP
2005PP/20 Added force_command boolean option to pipe transport.
2006 Patch from Nick Koston, of cPanel Inc.
2007
fcc8e047
JH
2008JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
2009 Bugzilla 321, 823.
2010
4c04137d 2011TF/04 Added udpsend ACL modifier and hexquote expansion operator
7142daca 2012
8c020188
PP
2013PP/21 Fix eximon continuous updating with timestamped log-files.
2014 Broken in a format-string cleanup in 4.80, missed when I repaired the
2015 other false fix of the same issue.
2016 Report and fix from Heiko Schlichting.
2017 Bugzilla 1363.
2018
d13cdd30
PP
2019PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
2020 Report from Prashanth Katuri.
2021
e2fbf4a2
PP
2022PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
2023 It's SecureTransport, so affects any MacOS clients which use the
2024 system-integrated TLS libraries, including email clients.
2025
f4c1088b
PP
2026PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
2027 using a MIME ACL for non-SMTP local injection.
2028 Report and assistance in diagnosis by Warren Baker.
2029
c5c2182f
PP
2030TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
2031
73431ca9
JH
2032JH/16 Fix comparisons for 64b. Bugzilla 1385.
2033
2d07a215
TL
2034TL/09 Add expansion variable $authenticated_fail_id to keep track of
2035 last id that failed so it may be referenced in subsequent ACL's.
2036
a30a8861
TL
2037TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
2038 Alexander Miroch.
2039
33382dd9
TL
2040TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
2041 ldap library initialization, allowing self-signed CA's to be
2042 used. Also properly sets require_cert option later in code by
2043 using NULL (global ldap config) instead of ldap handle (per
2044 session). Bug diagnosis and testing by alxgomz.
6d7c6175 2045
046172e6
TL
2046TL/12 Enhanced documentation in the ratelimit.pl script provided in
2047 the src/util/ subdirectory.
2048
581d7bee 2049TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1a7b746d 2050 renamed to Transport Post Delivery Action by Jeremy Harris, as
9bdd29ad
TL
2051 EXPERIMENTAL_TPDA.
2052
2053TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
2054 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
2055 redis_servers = needs to be configured which will be used by the redis
2056 lookup. Patch from Warren Baker, of The Packet Hub.
2057
237b2cf2
TL
2058TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
2059
9fc5a352
TL
2060TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
2061 hostname or reverse DNS when processing a host list. Used suggestions
2062 from multiple comments on this bug.
1a7b746d 2063
b10e4ec2
TL
2064TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
2065
e2cebd74
TL
2066TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
2067 Missed a few lines, added it to make the runtest require no keyboard
2068 interaction.
2069
2070TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
2071 contains upper case chars. Make router use caseful_local_part.
2072
2519e60d
TL
2073TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
2074 support when GnuTLS has been built with p11-kit.
2075
e78e6ecf 2076
4263f395
PP
2077Exim version 4.80.1
2078-------------------
2079
2080PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
2081 CVE-2012-5671
2c422e6f 2082 This, or similar/improved, will also be change PP/11 of 4.82.
3c0a92dc 2083
ea722490 2084
b1770b6e 2085Exim version 4.80
0599f9cf
PP
2086-----------------
2087
2088PP/01 Handle short writes when writing local log-files.
2089 In practice, only affects FreeBSD (8 onwards).
2090 Bugzilla 1053, with thanks to Dmitry Isaikin.
2091
23c7e742
NM
2092NM/01 Bugzilla 949 - Documentation tweak
2093
b322aac8
NM
2094NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
2095 improved.
2096
4a891427
NM
2097NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
2098
c1e794ba 2099PP/02 Implemented gsasl authenticator.
b322aac8 2100
97753960
PP
2101PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
2102
2103PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
2104 `pkg-config foo` for cflags/libs.
2105
df6303fa
PP
2106PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
2107 with rest of GSASL and with heimdal_gssapi.
2108
7e6a8985
PP
2109PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
2110 `pkg-config foo` for cflags/libs for the TLS implementation.
2111
f1e05cc7 2112PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
20aa9dbd
PP
2113 properties get this fed in as external SSF. A number of robustness
2114 and debugging improvements to the cyrus_sasl authenticator.
b322aac8 2115
4c287009
PP
2116PP/08 cyrus_sasl server now expands the server_realm option.
2117
b98bb9ac
PP
2118PP/09 Bugzilla 1214 - Log authentication information in reject log.
2119 Patch by Jeremy Harris.
2120
4a6a987a
PP
2121PP/10 Added dbmjz lookup type.
2122
c45dd180 2123PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
c7955b11 2124
7db8d074
PP
2125PP/12 MAIL args handles TAB as well as SP, for better interop with
2126 non-compliant senders.
2127 Analysis and variant patch by Todd Lyons.
2128
eae0036b 2129NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
cfab9d68 2130 Bug report from Lars Müller <lars@samba.org> (via SUSE),
e0df1c83
DM
2131 Patch from Dirk Mueller <dmueller@suse.com>
2132
dec5017e
PP
2133PP/13 tls_peerdn now print-escaped for spool files.
2134 Observed some $tls_peerdn in wild which contained \n, which resulted
2135 in spool file corruption.
2136
c80c5570
PP
2137PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
2138 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
2139 or write after TLS renegotiation, which otherwise led to messages
2140 "Got SSL error 2".
2141
076b11e2
PP
2142TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
2143 as a tracking header (ie: a signed header comes before the signature).
2144 Patch from Wolfgang Breyha.
2145
5407bfff
JH
2146JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
2147 comma-sep list; embedded commas doubled.
2148
9e45c72b
PP
2149JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
2150
e74376d8
PP
2151PP/15 LDAP: Check for errors of TLS initialisation, to give correct
2152 diagnostics.
2153 Report and patch from Dmitry Banschikov.
2154
4c04137d 2155PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
da3ad30d
PP
2156 Removed SSL_clear() after SSL_new() which led to protocol negotiation
2157 failures. We appear to now support TLS1.1+ with Exim.
2158
7be682ca
PP
2159PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
2160 lets Exim select keys and certificates based upon TLS SNI from client.
3f0945ff
PP
2161 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
2162 before an outbound SMTP session. New log_selector, +tls_sni.
7be682ca 2163
ef840681
PP
2164PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
2165 NULL dereference. Report and patch from Alun Jones.
2166
5bfb4cdf
PP
2167PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
2168 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
2169 Not seeing resolver debug output on NetBSD, but suspect this is a
2170 resolver implementation change.
2171
c6e95d22
PP
2172PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
2173 Left warnings. Added "eximon gdb" invocation mode.
2174
9cbad13b
PP
2175PP/21 Defaulting "accept_8bitmime" to true, not false.
2176
9ee44efb
PP
2177PP/22 Added -bw for inetd wait mode support.
2178
6a6084f8
PP
2179PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
2180 locate the relevant includes and libraries. Made this the default.
2181
12dd53c7
PP
2182PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
2183 Bugzilla 1246, report and most of solution from Tomasz Kusy.
2184
9e45c72b 2185JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
97d17305
JH
2186 This may cause build issues on older platforms.
2187
17c76198
PP
2188PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
2189 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
2190 gnutls_require_mac & gnutls_require_protocols (no longer supported).
2191 Added SNI support via GnuTLS too.
af3498d6 2192 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
17c76198 2193
53947857 2194PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
3f7eeb86 2195
eae0036b 2196PP/27 Applied dnsdb SPF support patch from Janne Snabb.
8ee4b30e
PP
2197 Applied second patch from Janne, implementing suggestion to default
2198 multiple-strings-in-record handling to match SPF spec.
eae0036b 2199
9e45c72b 2200JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
2605c55b 2201
7390e768
PP
2202PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
2203 read-only, out of scope).
2204 Patch from Wolfgang Breyha, report from Stuart Northfield.
2205
08488c86
PP
2206PP/29 Fix three issues highlighted by clang analyser static analysis.
2207 Only crash-plausible issue would require the Cambridge-specific
2208 iplookup router and a misconfiguration.
2209 Report from Marcin Mirosław.
2210
6475bd82
PP
2211PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
2212
81f91683
PP
2213PP/31 %D in printf continues to cause issues (-Wformat=security), so for
2214 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
2215 As part of this, removing so much warning spew let me fix some minor
2216 real issues in debug logging.
2217
5779e6aa
PP
2218PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
2219 assignment on my part. Fixed.
2220
3375e053
PP
2221PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
2222 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
2223 Janne Snabb (who went above and beyond: thank you).
2224
2225PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
2226 string otherwise requires a connection and a bunch more work and it's
78e0c7a3
PP
2227 relatively easy to get wrong. Should also expose TLS library linkage
2228 problems.
3375e053 2229
9d26b8c0
PP
2230PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
2231 64-bit ${eval} (JH/03).
2232
57eb9e91 2233PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
b87a6e0e
PP
2234 GNU libc to support some of the 64-bit stuff, should not lead to
2235 conflicts. Defined before os.h is pulled in, so if a given platform
2236 needs to override this, it can.
2237
16880d1a
PP
2238PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
2239 protection layer was required, which is not implemented.
2240 Bugzilla 1254, patch from Wolfgang Breyha.
2241
a799883d
PP
2242PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
2243 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
2244 tls_dhparam take prime identifiers. Also unbreak combination of
2245 OpenSSL+DH_params+TLSSNI.
2246
3ecab157 2247PP/39 Disable SSLv2 by default in OpenSSL support.
f0f5a555 2248
0599f9cf 2249
867fcbf5
PP
2250Exim version 4.77
2251-----------------
2252
2253PP/01 Solaris build fix for Oracle's LDAP libraries.
2254 Bugzilla 1109, patch from Stephen Usher.
2255
f1a29782
TF
2256TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
2257
ab42bd23
TK
2258TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
2259 whitespace trailer
867fcbf5 2260
0ca0cf52
TF
2261TF/02 Fix a couple more cases where we did not log the error message
2262 when unlink() failed. See also change 4.74-TF/03.
2263
921b12ca
TF
2264TF/03 Make the exiwhat support code safe for signals. Previously Exim might
2265 lock up or crash if it happened to be inside a call to libc when it
2266 got a SIGUSR1 from exiwhat.
2267
2268 The SIGUSR1 handler appends the current process status to the process
2269 log which is later printed by exiwhat. It used to use the general
2270 purpose logging code to do this, but several functions it calls are
2271 not safe for signals.
2272
2273 The new output code in the SIGUSR1 handler is specific to the process
2274 log, and simple enough that it's easy to inspect for signal safety.
2275 Removing some special cases also simplifies the general logging code.
2276 Removing the spurious timestamps from the process log simplifies
2277 exiwhat.
2278
c99ce5c9
TF
2279TF/04 Improved ratelimit ACL condition.
2280
2281 The /noupdate option has been deprecated in favour of /readonly which
2282 has clearer semantics. The /leaky, /strict, and /readonly update modes
2283 are mutually exclusive. The update mode is no longer included in the
2284 database key; it just determines when the database is updated. (This
4c04137d 2285 means that when you upgrade Exim will forget old rate measurements.)
c99ce5c9
TF
2286
2287 Exim now checks that the per_* options are used with an update mode that
2288 makes sense for the current ACL. For example, when Exim is processing a
2289 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
2290 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
2291 must specify per_mail/readonly. If you omit the update mode it defaults to
2292 /leaky where that makes sense (as before) or /readonly where required.
2293
2294 The /noupdate option is now undocumented but still supported for
2295 backwards compatibility. It is equivalent to /readonly except that in
2296 ACLs where /readonly is required you may specify /leaky/noupdate or
2297 /strict/noupdate which are treated the same as /readonly.
2298
2299 A useful new feature is the /count= option. This is a generalization
2300 of the per_byte option, so that you can measure the throughput of other
2301 aggregate values. For example, the per_byte option is now equivalent
2302 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
2303
2304 The per_rcpt option has been generalized using the /count= mechanism
2305 (though it's more complicated than the per_byte equivalence). When it is
2306 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
2307 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
2308 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
2309 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
2310 Note that using per_rcpt with a non-readonly update mode in more than
2311 one ACL will cause the recipients to be double-counted. (The per_mail
2312 and per_byte options don't have this problem.)
2313
2314 The handling of very low rates has changed slightly. If the computed rate
2315 is less than the event's count (usually one) then this event is the first
2316 after a long gap. In this case the rate is set to the same as this event's
2317 count, so that the first message of a spam run is counted properly.
2318
2319 The major new feature is a mechanism for counting the rate of unique
2320 events. The new per_addr option counts the number of different
2321 recipients that someone has sent messages to in the last time period. It
2322 behaves like per_rcpt if all the recipient addresses are different, but
2323 duplicate recipient addresses do not increase the measured rate. Like
2324 the /count= option this is a general mechanism, so the per_addr option
2325 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
2326 example, measure the rate that a client uses different sender addresses
2327 with the options per_mail/unique=$sender_address. There are further
2328 details in the main documentation.
2329
3634fc25
TF
2330TF/05 Removed obsolete $Cambridge$ CVS revision strings.
2331
792e8a19
TF
2332TF/06 Removed a few PCRE remnants.
2333
5901f0ab
TF
2334TF/07 Automatically extract Exim's version number from tags in the git
2335 repository when doing development or release builds.
2336
7f2a2a43
PP
2337PP/02 Raise smtp_cmd_buffer_size to 16kB.
2338 Bugzilla 879. Patch from Paul Fisher.
e2ca7082 2339
061b7ebd
PP
2340PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
2341 Heavily based on revision 40f9a89a from Simon Arlott's tree.
2342 Bugzilla 97.
2343
e12f8c32
PP
2344PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
2345
9e949f00 2346PP/05 Variable $av_failed, true if the AV scanner deferred.
7f2a2a43
PP
2347 Bugzilla 1078. Patch from John Horne.
2348
2349PP/06 Stop make process more reliably on build failure.
2350 Bugzilla 1087. Patch from Heiko Schlittermann.
9e949f00 2351
555ae6af 2352PP/07 Make maildir_use_size_file an _expandable_ boolean.
ac53fcda
PP
2353 Bugzilla 1089. Patch from Heiko Schlittermann.
2354
2355PP/08 Handle ${run} returning more data than OS pipe buffer size.
2356 Bugzilla 1131. Patch from Holger Weiß.
555ae6af 2357
6f7fe114
PP
2358PP/09 Handle IPv6 addresses with SPF.
2359 Bugzilla 860. Patch from Wolfgang Breyha.
2360
c566dd90
PP
2361PP/10 GnuTLS: support TLS 1.2 & 1.1.
2362 Bugzilla 1156.
89f897c3
PP
2363 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
2364 Bugzilla 1095.
c566dd90 2365
d6cc7c78 2366PP/11 match_* no longer expand right-hand-side by default.
39257585
PP
2367 New compile-time build option, EXPAND_LISTMATCH_RHS.
2368 New expansion conditions, "inlist", "inlisti".
2369
0d0e4455
PP
2370PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
2371
3399bb60 2372PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
d690cbdc
PP
2373
2374PP/14 fix log_write() format string regression from TF/03.
2375 Bugzilla 1152. Patch from Dmitry Isaikin.
2376
0ca0cf52 2377
10906672
PP
2378Exim version 4.76
2379-----------------
2380
2381PP/01 The new ldap_require_cert option would segfault if used. Fixed.
2382
754a0503
PP
2383PP/02 Harmonised TLS library version reporting; only show if debugging.
2384 Layout now matches that introduced for other libraries in 4.74 PP/03.
2385
c0c7b2da
PP
2386PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
2387
e97d1f08
PP
2388PP/04 New "dns_use_edns0" global option.
2389
084c1d8c
PP
2390PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2391 Bugzilla 1098.
2392
4e7ee012
PP
2393PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2394 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
da80c2a8 2395
c8d52a00
PP
2396TK/01 Updated PolarSSL code to 0.14.2.
2397 Bugzilla 1097. Patch from Andreas Metzler.
2398
54e7ce4a
PP
2399PP/07 Catch divide-by-zero in ${eval:...}.
2400 Fixes bugzilla 1102.
2401
5ee6f336
PP
2402PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2403 Bugzilla 1104.
2404
c8d52a00 2405TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
6ea4a851
PP
2406 format-string attack -- SECURITY: remote arbitrary code execution.
2407
2408TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2409 time unintentionally subject to list matching rules, letting the header
2410 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2411 arbitrary string expansion). This allowed for information disclosure.
2412
2413PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2414 INT_MIN/-1 -- value coerced to INT_MAX.
c8d52a00 2415
10906672 2416
aa097c4c
NM
2417Exim version 4.75
2418-----------------
2419
4c04137d 2420NM/01 Workaround for PCRE version dependency in version reporting
aa097c4c
NM
2421 Bugzilla 1073
2422
7f3d9eff
TF
2423TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2424 This fixes portability to compilers other than gcc, notably
2425 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2426
159f52d2
TF
2427TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2428 makefiles for portability to HP-UX and POSIX correctness.
2429
0cc9542a
PP
2430PP/01 Permit LOOKUP_foo enabling on the make command-line.
2431 Also via indented variable definition in the Makefile.
2432 (Debugging by Oliver Heesakkers).
2433
f7274286
PP
2434PP/02 Restore caching of spamd results with expanded spamd_address.
2435 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2436
7b797365
PP
2437PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2438 Improves build reliability. Fix from: Frank Elsner
2439
caacae52
NM
2440NM/02 Fix wide character breakage in the rfc2047 coding
2441 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2442
09dcaba9
NM
2443NM/03 Allow underscore in dnslist lookups
2444 Fixes bug 1026. Patch from Graeme Fowler
2445
bc19a55b
PP
2446PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2447 Code patches from Adam Ciarcinski of NetBSD.
caacae52 2448
bd4c9759
NM
2449NM/04 Fixed exiqgrep to cope with mailq missing size issue
2450 Fixes bug 943.
2451
b72aab72
PP
2452PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2453 is logged, to avoid truncation. Patch from John Horne.
2454
2fe76745
PP
2455PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2456 Patch from Jakob Hirsch.
2457
76aa570c
PP
2458PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2459 SQL string expansion failure details.
2460 Patch from Andrey Oktyabrski.
2461
f1e5fef5
PP
2462PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2463 Patch from Simon Arlott.
2464
4d805ee9
PP
2465PP/09 New lookups functionality failed to compile on old gcc which rejects
2466 extern declarations in function scope.
2467 Patch from Oliver Fleischmann
2468
cd59ab18
PP
2469PP/10 Use sig_atomic_t for flags set from signal handlers.
2470 Check getgroups() return and improve debugging.
2471 Fixed developed for diagnosis in bug 927 (which turned out to be
2472 a kernel bug).
2473
332f5cf3
PP
2474PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2475 Patch from Mark Zealey.
2476
29cfeb94
PP
2477PP/12 Bugzilla 1056: Improved spamd server selection.
2478 Patch from Mark Zealey.
2479
660242ad
PP
2480PP/13 Bugzilla 1086: Deal with maildir quota file races.
2481 Based on patch from Heiko Schlittermann.
2482
bc4bc4c5
PP
2483PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2484 Patch from Uwe Doering, sign-off by Michael Haardt.
2485
2e64baa9
NM
2486NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2487 variable declaration deep within a block. Bug and patch from
2488 Dennis Davis.
2489
4c04137d 2490PP/15 lookups-Makefile IRIX compatibility coercion.
bddd7526 2491
6bac1a9a
PP
2492PP/16 Make DISABLE_DKIM build knob functional.
2493
552193f0
NM
2494NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2495 Patch by Simon Arlott
baeee2c1 2496
1b587e48
TF
2497TF/03 Fix valgrind.h portability to C89 compilers that do not support
2498 variable argument macros. Our copy now differs from upstream.
2499
aa097c4c 2500
8c07b69f
TF
2501Exim version 4.74
2502-----------------
2503
2504TF/01 Failure to get a lock on a hints database can have serious
2505 consequences so log it to the panic log.
2506
c0ea85ab
TF
2507TF/02 Log LMTP confirmation messages in the same way as SMTP,
2508 controlled using the smtp_confirmation log selector.
2509
0761d44e
TF
2510TF/03 Include the error message when we fail to unlink a spool file.
2511
0a349494
PP
2512DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2513 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2514 for maintaining out-of-tree patches for some time.
2515
2516PP/01 Bugzilla 139: Documentation and portability issues.
2517 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2518 Handle per-OS dynamic-module compilation flags.
2519
fea24b2e
PP
2520PP/02 Let /dev/null have normal permissions.
2521 The 4.73 fixes were a little too stringent and complained about the
2522 permissions on /dev/null. Exempt it from some checks.
2523 Reported by Andreas M. Kirchwitz.
2524
6545de78
PP
2525PP/03 Report version information for many libraries, including
2526 Exim version information for dynamically loaded libraries. Created
2527 version.h, now support a version extension string for distributors
2528 who patch heavily. Dynamic module ABI change.
2529
1670ef10
PP
2530PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2531 privilege escalation vulnerability whereby the Exim run-time user
2532 can cause root to append content of the attacker's choosing to
2533 arbitrary files.
2534
c0886197
PP
2535PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2536 (Wolfgang Breyha)
2537
b7487bce
PP
2538PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2539 If dropping privileges for untrusted macros, we disabled normal logging
2540 on the basis that it would fail; for the Exim run-time user, this is not
2541 the case, and it resulted in successful deliveries going unlogged.
2542 Fixed. Reported by Andreas Metzler.
2543
8c07b69f 2544
97fd1e48 2545Exim version 4.73
ed7f7860 2546-----------------
97fd1e48
PP
2547
2548PP/01 Date: & Message-Id: revert to normally being appended to a message,
2549 only prepend for the Resent-* case. Fixes regression introduced in
2550 Exim 4.70 by NM/22 for Bugzilla 607.
2551
6901c596
PP
2552PP/02 Include check_rfc2047_length in configure.default because we're seeing
2553 increasing numbers of administrators be bitten by this.
2554
a8c8d6b5
JJ
2555JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2556
77bb000f
PP
2557PP/03 Bugzilla 994: added openssl_options main configuration option.
2558
a29e5231
PP
2559PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2560
ec5a0394 2561PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
a29e5231 2562
55c75993
PP
2563PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2564
453a6645 2565PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
ec5a0394
PP
2566 without a peer certificate, leading to a segfault because of an
2567 assumption that peers always have certificates. Be a little more
453a6645
PP
2568 paranoid. Problem reported by Martin Tscholak.
2569
8544e77a
PP
2570PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2571 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2572 NB: ClamAV planning to remove STREAM in "middle of 2010".
3346ab01
PP
2573 CL also introduces -bmalware, various -d+acl logging additions and
2574 more caution in buffer sizes.
8544e77a 2575
83e029d5
PP
2576PP/09 Implemented reverse_ip expansion operator.
2577
ed7f7860
PP
2578PP/10 Bugzilla 937: provide a "debug" ACL control.
2579
7d9f747b
PP
2580PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2581
4b2241d2
PP
2582PP/12 Bugzilla 973: Implement --version.
2583
10385c15
PP
2584PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2585
dbc4b90d
PP
2586PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2587
532be449
PP
2588PP/15 Bugzilla 816: support multiple condition rules on Routers.
2589
6a8de854 2590PP/16 Add bool_lax{} expansion operator and use that for combining multiple
71265ae9
PP
2591 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2592 ignore trailing whitespace.
6a8de854 2593
5dc43717
JJ
2594JJ/02 prevent non-panic DKIM error from being sent to paniclog
2595
2596JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2597 "exim" to be used
55c75993 2598
3346ab01
PP
2599PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2600 Notification from Dr Andrew Aitchison.
2601
491fab4c
PP
2602PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2603 ExtendedDetectionInfo response format.
2604 Notification from John Horne.
2605
13eb9497
PP
2606PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2607 compatible.
2608
2609PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2610 XSL and documented dependency on system catalogs, with examples of how
2611 it normally works.
2612
7f36d675
DW
2613DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2614 access.
2615
c1d94452
DW
2616DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2617 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2618 configuration file which is writeable by the Exim user or group.
2619
e2f5dc15
DW
2620DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2621 of configuration files to cover files specified with the -C option if
2622 they are going to be used with root privileges, not just the default
2623 configuration file.
2624
cd25e41d
DW
2625DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2626 option (effectively making it always true).
2627
261dc43e
DW
2628DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2629 files to be used while preserving root privileges.
2630
fa32850b
DW
2631DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2632 that rogue child processes cannot use them.
2633
79d4bc3d
PP
2634PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2635 run-time user, instead of root.
2636
43236f35 2637PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2cfd3221
PP
2638 Exim run-time user without dropping privileges.
2639
fb08281f
DW
2640DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2641 result string, instead of calling string_vformat() twice with the same
2642 arguments.
3346ab01 2643
74935b98
DW
2644DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2645 for other users. Others should always drop root privileges if they use
2646 -C on the command line, even for a whitelisted configure file.
2647
90b6341f
DW
2648DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2649
57730b52
ML
2650NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2651
66581d1e 2652
465e92cf
JJ
2653Exim version 4.72
2654-----------------
2655
453a6645
PP
2656JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2657 $data_path, and $header_path variables; fixed documentation bugs and
2658 typos
465e92cf 2659
453a6645
PP
2660JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2661 exipick to access non-standard spools, including the "frozen" queue
2662 (Finput)
edae0343 2663
9bd3e22c
NM
2664NM/01 Bugzilla 965: Support mysql stored procedures.
2665 Patch from Alain Williams
2666
bb576ff7
NM
2667NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2668
5a1a5845
NM
2669NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2670 Patch from Andreas Metzler
2671
981a9fad
NM
2672NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2673 Patch from Kirill Miazine
2674
7fc497ee
NM
2675NM/05 Bugzilla 671: Added umask to procmail example.
2676
1a41defa
JJ
2677JJ/03 installed exipick 20100323.0, fixing doc bug
2678
a466095c 2679NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
b26eacf1 2680 directory. Notification and patch from Dan Rosenberg.
a466095c 2681
94a6bd0b
NM
2682TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2683
2684TK/02 Improve log output when DKIM signing operation fails.
2685
2686MH/01 Treat the transport option dkim_domain as a colon separated
2687 list, not as a single string, and sign the message with each element,
2688 omitting multiple occurences of the same signer.
2689
c1b141a8
NM
2690NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2691 Bugzilla 985, 986. Patch by Simon Arlott
94a6bd0b 2692
b26eacf1 2693NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
0d0c6357
NM
2694 Patch by Simon Arlott
2695
179c5980 2696PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
b26eacf1 2697 MBX locking. Notification from Dan Rosenberg.
179c5980 2698
9bd3e22c 2699
7c6d71af
NM
2700Exim version 4.71
2701-----------------
2702
7d9f747b 2703TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
7c6d71af 2704
f013fb92
NM
2705NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2706
0eb8eedd
NM
2707NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2708
663ee6d9
NM
2709NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2710
177ebd9b
NM
2711NM/04 Bugzilla 915: Flag broken perl installation during build.
2712
7c6d71af 2713
210f147e
NM
2714Exim version 4.70
2715-----------------
2716
cdd3bb85 2717TK/01 Added patch by Johannes Berg that expands the main option
e739e3d9 2718 "spamd_address" if it starts with a dollar sign.
cdd3bb85
TK
2719
2720TK/02 Write list of recipients to X-Envelope-Sender header when building
2721 the mbox-format spool file for content scanning (suggested by Jakob
7d9f747b 2722 Hirsch).
cdd3bb85
TK
2723
2724TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2725 (http://www.dcc-servers.net/) support via dccifd. Activated by
e739e3d9 2726 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
cdd3bb85
TK
2727
2728TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2729 by Mark Daniel Reidel <mr@df.eu>.
2730
210f147e
NM
2731NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2732 When building exim an external PCRE library is now needed -
2733 PCRE is a system library on the majority of modern systems.
2734 See entry on PCRE_LIBS in EDITME file.
2735
deafd5b3
NM
2736NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2737 conversation. Added nologin parameter to request.
7d9f747b 2738 Patch contributed by Kirill Miazine.
deafd5b3 2739
089793a4
TF
2740TF/01 Do not log submission mode rewrites if they do not change the address.
2741
5f16ca82
TF
2742TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2743
dae9d94e 2744NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
7d9f747b 2745 log files in place. Contributed by Roberto Lima.
dae9d94e 2746
7d9f747b 2747NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
3f0da4d0 2748
06864c44
TF
2749TF/03 Bugzilla 615: When checking the local_parts router precondition
2750 after a local_part_suffix or local_part_prefix option, Exim now
2751 does not use the address's named list lookup cache, since this
2752 contains cached lookups for the whole local part.
2753
65a7d8c3 2754NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
7d9f747b 2755 Robert Millan. Documentation is in experimental-spec.txt.
65a7d8c3 2756
23510047 2757TF/04 Bugzilla 668: Fix parallel build (make -j).
65a7d8c3 2758
7d9f747b 2759NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
5f28a6e8 2760
7d8eec3a 2761NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
7d9f747b 2762 Patch provided by Jan Srzednicki.
6c588e74 2763
89dec7b6
TF
2764TF/05 Leading white space used to be stripped from $spam_report which
2765 wrecked the formatting. Now it is preserved.
5f28a6e8 2766
a99de90c
TF
2767TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2768 that they are available at delivery time.
2769
e2803e40
TF
2770TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2771
7199e1ee
TF
2772TF/08 TLS error reporting now respects the incoming_interface and
2773 incoming_port log selectors.
2774
e276e04b
TF
2775TF/09 Produce a more useful error message if an SMTP transport's hosts
2776 setting expands to an empty string.
2777
ce552449 2778NM/06 Bugzilla 744: EXPN did not work under TLS.
7d9f747b 2779 Patch provided by Phil Pennock.
ce552449 2780
e765a0f1 2781NM/07 Bugzilla 769: Extraneous comma in usage fprintf
7d9f747b 2782 Patch provided by Richard Godbee.
e765a0f1 2783
4f054c63 2784NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
447de4b0 2785 acl_smtp_notquit, added index entry.
4f054c63 2786
7d9f747b
PP
2787NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2788 Patch provided by Eugene Bujak.
24c929a2 2789
7d9f747b
PP
2790NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2791 accept(). Patch provided by Maxim Dounin.
cf73943b 2792
b52bc06e 2793NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
7d9f747b 2794 Patch provided by Phil Pennock.
b52bc06e 2795
447de4b0
NM
2796NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2797
4c69d561 2798NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
7d9f747b 2799 Patch provided by Brad "anomie" Jorsch.
4c69d561 2800
d5c39246 2801NM/14 Bugzilla 622: Added timeout setting to transport filter.
7d9f747b 2802 Patch provided by Dean Brooks.
9b989985 2803
0b23848a
TK
2804TK/05 Add native DKIM support (does not depend on external libraries).
2805
8f3414a1 2806NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
7d9f747b 2807 Patch provided by Graeme Fowler.
e2aacdfd 2808
fb6f955d
NM
2809NM/16 Bugzilla 851: Documentation example syntax fix.
2810
2811NM/17 Changed NOTICE file to remove references to embedded PCRE.
8f3414a1 2812
7d9f747b
PP
2813NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2814 lsearch.
dbb0bf41 2815
7d9f747b
PP
2816NM/19 Bugzilla 745: TLS version reporting.
2817 Patch provided by Phil Pennock.
f3766eb5 2818
7d9f747b
PP
2819NM/20 Bugzilla 167: bool: condition support.
2820 Patch provided by Phil Pennock.
36f12725 2821
7d9f747b
PP
2822NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2823 clients. Patch provided by Phil Pennock.
e6060e2c 2824
7d9f747b
PP
2825NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2826 Patch provided by Brad "anomie" Jorsch.
5eb690a1 2827
7d9f747b
PP
2828NM/23 Bugzilla 687: Fix misparses in eximstats.
2829 Patch provided by Heiko Schlittermann.
d5c13d66 2830
7d9f747b
PP
2831NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2832 Patch provided by Heiko Schlittermann.
b2335c0b 2833
7d9f747b 2834NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1da77999 2835 plus update to original patch.
f4cd9433 2836
7d9f747b 2837NM/26 Bugzilla 799: Documentation correction for ratelimit.
dc988b7e 2838
7d9f747b
PP
2839NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2840 Patch provided by David Brownlee.
8dc71ab3 2841
7d9f747b 2842NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
400eda43 2843
7d9f747b 2844NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
ec5a421b 2845
7d9f747b 2846NM/30 Bugzilla 888: TLS documentation bugfixes.
07af267e 2847
7d9f747b 2848NM/31 Bugzilla 896: Dovecot buffer overrun fix.
51473862 2849
17792b53 2850NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
7d9f747b 2851 Unlike the original bugzilla I have changed all shell scripts in src tree.
17792b53 2852
7d9f747b
PP
2853NM/33 Bugzilla 898: Transport filter timeout fix.
2854 Patch by Todd Rinaldo.
52383f8f 2855
91576cec 2856NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
7d9f747b 2857 Patch by Serge Demonchaux.
5ca6d115 2858
7d9f747b
PP
2859NM/35 Bugzilla 39: Base64 decode bug fixes.
2860 Patch by Jakob Hirsch.
baee9eee 2861
7d9f747b 2862NM/36 Bugzilla 909: Correct connect() call in dcc code.
e93a964c 2863
7d9f747b 2864NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
9bf3d68f 2865
7d9f747b 2866NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
96535b98 2867
7d9f747b 2868NM/39 Bugzilla 911: Fixed MakeLinks build script.
30339e0f 2869
deafd5b3 2870
47db1125
NM
2871Exim version 4.69
2872-----------------
2873
4b3504d0
TK
2874TK/01 Add preliminary DKIM support. Currently requires a forked version of
2875 ALT-N's libdkim that I have put here:
2876 http://duncanthrax.net/exim-experimental/
2877
2878 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2879 were called 'true' and it seems that C99 defines that as a reserved
2880 keyword to be used with 'bool' variable types. That means you could
2881 not include C99-style headers which use bools without triggering
2882 build errors in sieve.c.
2883
81ea09ca
NM
2884NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2885 as mailq or other aliases. Changed the --help handling significantly
2886 to do whats expected. exim_usage() emits usage/help information.
2887
f13cddcb
SC
2888SC/01 Added the -bylocaldomain option to eximstats.
2889
7d9f747b 2890NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
8ad076b2 2891
7d9f747b 2892NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
a843aaa6 2893
7d9f747b 2894NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
47db1125
NM
2895
2896
eb4c0de6
PH
2897Exim version 4.68
2898-----------------
2899
2900PH/01 Another patch from the Sieve maintainer.
2901
6a3bceb1
PH
2902PH/02 When an IPv6 address is converted to a string for single-key lookup
2903 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2904 dots are used instead of colons so that keys in lsearch files need not
2905 contain colons. This was done some time before quoting was made available
2906 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2907 (notated using the quote facility) so as to distinguish them from IPv4
2908 keys. This meant that lookups for IP addresses in host lists did not work
2909 for iplsearch lookups.
2910
2911 This has been fixed by arranging for IPv6 addresses to be expressed with
2912 colons if the lookup type is iplsearch. This is not incompatible, because
2913 previously such lookups could never work.
2914
4c04137d 2915 The situation is now rather anomalous, since one *can* have colons in
6a3bceb1
PH
2916 ordinary lsearch keys. However, making the change in all cases is
2917 incompatible and would probably break a number of configurations.
2918
2e30fa9d
TK
2919TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2920 version.
2921
0806a9c5
MH
2922MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2923 conversion specification without a maximum field width, thereby enabling
2924 a rogue spamd server to cause a buffer overflow. While nobody in their
2925 right mind would setup Exim to query an untrusted spamd server, an
2926 attacker that gains access to a server running spamd could potentially
2927 exploit this vulnerability to run arbitrary code as the Exim user.
2928
ae276964
TK
2929TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2930 $primary_hostname instead of what libspf2 thinks the hosts name is.
2931
0f2cbd1b
MH
2932MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2933 a directory entry by the name of the lookup key. Previously, if a
2934 symlink pointed to a non-existing file or a file in a directory that
2935 Exim lacked permissions to read, a lookup for a key matching that
2936 symlink would fail. Now it is enough that a matching directory entry
2937 exists, symlink or not. (Bugzilla 503.)
2938
2b85bce7
PH
2939PH/03 The body_linecount and body_zerocount variables are now exported in the
2940 local_scan API.
2941
93655c46
PH
2942PH/04 Added the $dnslist_matched variable.
2943
6c512171
PH
2944PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2945 This means they are set thereafter only if the connection becomes
2946 encrypted.
2947
2948PH/06 Added the client_condition to authenticators so that some can be skipped
2949 by clients under certain conditions.
2950
aa6dc513
PH
2951PH/07 The error message for a badly-placed control=no_multiline_responses left
2952 "_responses" off the end of the name.
2953
a96603a0
PH
2954PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2955
8f240103
PH
2956PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2957 (without spaces) instead of just copying the configuration text.
2958
2959PH/10 Added the /noupdate option to the ratelimit ACL condition.
2960
d677b2f2
PH
2961PH/11 Added $max_received_linelength.
2962
d52120f2
PH
2963PH/12 Added +ignore_defer and +include_defer to host lists.
2964
64f2600a
PH
2965PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2966 way in which PCRE > 7.0 is built.
2967
8669f003
PH
2968PH/14 Implemented queue_only_load_latch.
2969
a4dc33a8
PH
2970PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2971 MAIL command. The effect was to mangle the value on 64-bit systems.
2972
d6a60c0f
PH
2973PH/16 Another patch from the Sieve maintainer.
2974
8f128379
PH
2975PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2976
8932dffe
PH
2977PH/18 If a system quota error occurred while trying to create the file for
2978 a maildir delivery, the message "Mailbox is full" was not appended to the
2979 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2980 only to a quota excession during the actual writing of the file.
d6a60c0f 2981
ddea74fa 2982PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
2983 characters?) which causes problems in log lines. The DN values are now
2984 passed through string_printing() before being added to log lines.
2985
ddea74fa 2986PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
2987 and InterBase are left for another time.)
2988
ddea74fa
PH
2989PH/21 Added message_body_newlines option.
2990
ce9f225c
PH
2991PH/22 Guard against possible overflow in moan_check_errorcopy().
2992
19897d52
PH
2993PH/23 POSIX allows open() to be a macro; guard against that.
2994
bc64a74d
PH
2995PH/24 If the recipient of an error message contained an @ in the local part
2996 (suitably quoted, of course), incorrect values were put in $domain and
2997 $local_part during the evaluation of errors_copy.
2998
eb4c0de6 2999
b4ed4da0
PH
3000Exim version 4.67
3001-----------------
3002
22ad45c9
MH
3003MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
3004 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
3005 Jan Srzednicki.
3006
b4ed4da0
PH
3007PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
3008 issue a MAIL command.
3009
431b7361
PH
3010PH/02 In an ACL statement such as
3011
3012 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
3013
3014 if a client was not listed at all, or was listed with a value other than
3015 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
3016 the condition was not true (as it should be), so access was not denied.
3017 The bug was that the ! inversion was incorrectly passed on to the second
3018 item. This has been fixed.
3019
3020PH/03 Added additional dnslists conditions == and =& which are different from
3021 = and & when the dns lookup returns more than one IP address.
3022
83da1223
PH
3023PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
3024 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
3025
54fc8428
PH
3026PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
3027 FSYNC, which compiles an option called disable_fsync that allows for
3028 bypassing fsync(). The documentation is heavily laced with warnings.
3029
34c5e8dd
SC
3030SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
3031
bbe15da8
PH
3032PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
3033 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
3034 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
3035 including adding "make clean"; (3) Added -fPIC when compiling the test
3036 dynamically loaded module, to get rid of a warning.
3037
0e8a9471
MH
3038MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
3039 message fails, move_frozen_messages = true and ignore_bounce_errors_after
3040 = 0s. The bug is otherwise harmless.
3041
f0872424
PH
3042PH/07 There was a bug in the dovecot authenticator such that the value of
3043 $auth1 could be overwritten, and so not correctly preserved, after a
3044 successful authentication. This usually meant that the value preserved by
3045 the server_setid option was incorrect.
3046
b01dd148
PH
3047PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
3048
6bf342e1
PH
3049PH/09 Installed PCRE release 7.0.
3050
273f34d0
PH
3051PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
3052 run for batched SMTP input. It is now run at the start of every message
3053 in the batch. While fixing this I discovered that the process information
3054 (output by running exiwhat) was not always getting set for -bs and -bS
3055 input. This is fixed, and it now also says "batched" for BSMTP.
3056
cf8b11a5
PH
3057PH/11 Added control=no_pipelining.
3058
41c7c167
PH
3059PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
3060 patch, slightly modified), and move the expansion of helo_data till after
3061 the connection is made in the smtp transport (so it can use these
3062 values).
3063
9c57cbc0
PH
3064PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
3065
f3f065bb
PH
3066PH/14 Added log_selector = +pid.
3067
047bdd8c
PH
3068PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
3069
0ce9abe6
PH
3070PH/16 Add ${if forany and ${if forall.
3071
0e22dfd1
PH
3072PH/17 Added dsn_from option to vary the From: line in DSNs.
3073
4c590bd1
PH
3074PH/18 Flush SMTP output before performing a callout, unless control =
3075 no_callout_flush is set.
3076
09945f1e
PH
3077PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
3078 was true (the default) a successful delivery failed to delete the retry
3079 item, thus causing premature timeout of the address. The bug is now
3080 fixed.
3081
c51b8e75
PH
3082PH/20 Added hosts_avoid_pipelining to the smtp transport.
3083
e28326d8 3084PH/21 Long custom messages for fakedefer and fakereject are now split up
4c04137d 3085 into multiline responses in the same way that messages for "deny" and
e28326d8
PH
3086 other ACL rejections are.
3087
75b1493f
PH
3088PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
3089 with slight modification.
3090
7c5214ec
PH
3091PH/23 Applied sieve patches from the maintainer "tracking the latest notify
3092 draft, changing the syntax and factoring some duplicate code".
3093
4311097e
PH
3094PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
3095 for deliveries of the second and subsequent messages over the same SMTP
3096 connection.
3097
29f89cad
PH
3098PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
3099 ${reduce, with only minor "tidies".
3100
5e687460
SC
3101SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
3102
c3611384
PH
3103PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
3104 expansion side effects.
3105
5a11a7b4
PH
3106PH/27 When a message times out after an over-quota error from an Exim-imposed
3107 quota, the bounce message says "mailbox is full". This message was not
3108 being given when it was a system quota that was exceeded. It now should
3109 be the same.
3110
0e20aff9
MH
3111MH/03 Made $recipients available in local_scan(). local_scan() already has
3112 better access to the recipient list through recipients_list[], but
3113 $recipients can be useful in postmaster-provided expansion strings.
3114
ca86f471
PH
3115PH/28 The $smtp_command and $smtp_command_argument variables were not correct
3116 in the case of a MAIL command with additional options following the
3117 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
3118 were accidentally chopped off.
3119
a14e5636
PH
3120PH/29 SMTP synchronization checks are implemented when a command is read -
3121 there is a check that no more input is waiting when there shouldn't be
3122 any. However, for some commands, a delay in an ACL can mean that it is
3123 some time before the response is written. In this time, more input might
3124 arrive, invalidly. So now there are extra checks after an ACL has run for
3125 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
3126 pipelining has not been advertised.
3127
ec95d1a6
PH
3128PH/30 MH's patch to allow iscntrl() characters to be list separators.
3129
42855d71
PH
3130PH/31 Unlike :fail:, a custom message specified with :defer: was not being
3131 returned in the SMTP response when smtp_return_error_details was false.
3132 This has been fixed.
3133
57c2c631
PH
3134PH/32 Change the Dovecot authenticator to use read() and write() on the socket
3135 instead of the C I/O that was originally supplied, because problems were
3136 reported on Solaris.
3137
58c01c94
PH
3138PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
3139 Exim which did not show up earlier: it was assuming that a call to
3140 SSL_CTX_set_info_callback() might give an error value. In fact, there is
3141 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
3142 was a macro that became an assignment, so it seemed to work. This has
3143 changed to a proper function call with a void return, hence the compile
3144 error. Exim's code has been fixed.
3145
dee5a20a
PH
3146PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
3147 cpus.
3148
d2ee6114
PH
3149PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
3150
b2d5182b
PH
3151PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
3152
79749a79
PH
3153PH/37 If a message is not accepted after it has had an id assigned (e.g.
3154 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
3155 "Completed" line in the log. When some messages of this type were
3156 selected by exigrep, they were listed as "not completed". Others were
3157 picked up by some special patterns. I have improved the selection
3158 criteria to be more general.
79749a79 3159
c456d9bb
PH
3160PH/38 The host_find_failed option in the manualroute router can now be set
3161 to "ignore", to completely ignore a host whose IP address cannot be
3162 found. If all hosts are ignored, the behaviour is controlled by the new
3163 host_all_ignored option.
3164
cd9868ec
PH
3165PH/39 In a list of hosts for manualroute, if one item (either because of multi-
3166 homing or because of multiple MX records with /mx) generated more than
3167 one IP address, and the following item turned out to be the local host,
3168 all the secondary addresses of the first item were incorrectly removed
3169 from the list, along with the local host and any following hosts (which
3170 is what is supposed to happen).
3171
ebeaf996
PH
3172PH/40 When Exim receives a message, it writes the login name, uid, and gid of
3173 whoever called Exim into the -H file. In the case of the daemon it was
3174 behaving confusingly. When first started, it used values for whoever
3175 started the daemon, but after a SIGHUP it used the Exim user (because it
3176 calls itself on a restart). I have changed the code so that it now always
3177 uses the Exim user.
3178
2679d413
PH
3179PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
3180 message are rejected with the same error (e.g. no authentication or bad
3181 sender address), and a DATA command is nevertheless sent (as can happen
3182 with PIPELINING or a stupid MUA), the error message that was given to the
3183 RCPT commands is included in the rejection of the DATA command. This is
3184 intended to be helpful for MUAs that show only the final error to their
3185 users.
3186
84024b72
PH
3187PH/42 Another patch from the Sieve maintainer.
3188
8005d38e
SC
3189SC/02 Eximstats - Differentiate between permanent and temporary rejects.
3190 Eximstats - Fixed some broken HTML links and added missing column headers
3191 (Jez Hancock).
3192 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
3193 columns for Rejects, Temp Rejects, Ham, and Spam rows.
3194
3298c6c6
SC
3195SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
3196
a43a27c5
PH
3197PH/43 Yet another patch from the Sieve maintainer.
3198
58eb016e 3199PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
3200 the response to the final '.' that terminates a message, but only in the
3201 case where the client has not sent further data following the '.'
3202 (unfortunately, this is allowed). However, in many cases there won't be
3203 any further data because there won't be any more messages to send. A call
3204 to select() can be used: if it shows that the input is "ready", there is
3205 either input waiting, or the socket has been closed. An attempt to read
3206 the next input character can distinguish the two cases. Previously, Exim
58eb016e 3207 would have sent an OK response which the client would never have see.
563b63fa
PH
3208 This could lead to message repetition. This fix should cure that, at
3209 least in a lot of common cases.
58eb016e 3210
b43a74ea
PH
3211PH/45 Do not advertise STARTTLS in response to HELP unless it would be
3212 advertised in response to EHLO.
3213
b4ed4da0 3214
5dd1517f
PH
3215Exim version 4.66
3216-----------------
3217
3218PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
3219 fixed by 4.65/MH/01 (is this a record?) are fixed:
3220
3221 (i) An empty string was always treated as zero by the numeric comparison
3222 operators. This behaviour has been restored.
3223
3224 (ii) It is documented that the numeric comparison operators always treat
3225 their arguments as decimal numbers. This was broken in that numbers
3226 starting with 0 were being interpreted as octal.
3227
3228 While fixing these problems I realized that there was another issue that