Fix timestamp outputs for TAI timezone. Bug 2530
[exim.git] / doc / doc-txt / ChangeLog
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1This document describes *changes* to previous versions, that might
2affect Exim's operation, with an unchanged configuration file. For new
3options, and new features, see the NewStuff file next to this ChangeLog.
495ae4b0 4
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6Exim version 4.94
7-----------------
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8
9JH/01 Avoid costly startup code when not strictly needed. This reduces time
10 for some exim process initialisations. It does mean that the logging
11 of TLS configuration problems is only done for the daemon startup.
12
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13JH/02 Early-pipelining support code is now included unless disabled in Makefile.
14
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15JH/03 DKIM verification defaults no long accept sha1 hashes, to conform to
16 RFC 8301. They can still be enabled, using the dkim_verify_hashes main
17 option.
18
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19JH/04 Support CHUNKING from an smtp transport using a transport_filter, when
20 DKIM signing is being done. Previously a transport_filter would always
21 disable CHUNKING, falling back to traditional DATA.
22
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23JH/05 Regard command-line receipients as tainted.
24
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25JH/06 Bug 340: Remove the daemon pid file on exit, whe due to SIGTERM.
26
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27JH/07 Bug 2489: Fix crash in the "pam" expansion condition. It seems that the
28 PAM library frees one of the arguments given to it, despite the
29 documentation. Therefore a plain malloc must be used.
30
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31JH/08 Bug 2491: Use tainted buffers for the transport smtp context. Previously
32 on-stack buffers were used, resulting in a taint trap when DSN information
33 copied from a received message was written into the buffer.
34
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35JH/09 Bug 2493: Harden ARC verify against Outlook, whick has been seen to mix
36 the ordering of its ARC headers. This caused a crash.
37
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38JH/10 Bug 2492: Use tainted memory for retry record when needed. Previously when
39 a new record was being constructed with information from the peer, a trap
40 was taken.
41
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42JH/11 Bug 2494: Unset the default for dmarc_tld_file. Previously a naiive
43 installation would get error messages from DMARC verify, when it hit the
44 nonexistent file indicated by the default. Distros wanting DMARC enabled
45 should both provide the file and set the option.
46 Also enforce no DMARC verification for command-line sourced messages.
47
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48JH/12 Fix an uninitialised flag in early-pipelining. Previously connections
49 could, depending on the platform, hang at the STARTTLS response.
50
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51JH/13 Bug 2498: Reset a counter used for ARC verify before handling another
52 message on a connection. Previously if one message had ARC headers and
53 the following one did not, a crash could result when adding an
54 Authentication-Results: header.
55
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56JH/14 Bug 2500: Rewind some of the common-coding in string handling between the
57 Exim main code and Exim-related utities. The introduction of taint
58 tracking also did many adjustments to string handling. Since then, eximon
59 frequently terminated with an assert failure.
60
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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
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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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140Exim version 4.93
141-----------------
142
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143JH/01 OpenSSL: With debug enabled output keying information sufficient, server
144 side, to decode a TLS 1.3 packet capture.
40ed89b3 145
fc243e94 146JH/02 OpenSSL: Suppress the sending of (stateful) TLS1.3 session tickets.
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147 Previously the default library behaviour applied, sending two, each in
148 its own TCP segment.
149
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150JH/03 Debug output for ACL now gives the config file name and line number for
151 each verb.
152
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153JH/04 The default received_header_text now uses the RFC 8314 tls cipher clause.
154
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155JH/05 DKIM: ensure that dkim_domain elements are lowercased before use.
156
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157JH/06 Fix buggy handling of autoreply bounce_return_size_limit, and a possible
158 buffer overrun for (non-chunking) other transports.
159
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160JH/07 GnuTLS: Our use of late (post-handshake) certificate verification, under
161 TLS1.3, means that a server rejecting a client certificate is not visible
162 to the client until the first read of encrypted data (typically the
163 response to EHLO). Add detection for that case and treat it as a failed
164 TLS connection attempt, so that the normal retry-in-clear can work (if
165 suitably configured).
166
c05bdbd6 167JB/01 Bug 2375: fix expansions of 822 addresses having comments in local-part
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168 and/or domain. Found and fixed by Jason Betts.
169
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170JH/08 Add hardening against SRV & TLSA lookups the hit CNAMEs (a nonvalid
171 configuration). If a CNAME target was not a wellformed name pattern, a
172 crash could result.
173
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174JH/09 Logging: Fix initial listening-on line for multiple ports for an IP when
175 the OS reports them interleaved with other addresses.
176
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177JH/10 OpenSSL: Fix aggregation of messages. Previously, when PIPELINING was
178 used both for input and for a verify callout, both encrypted, SMTP
179 responses being sent by the server could be lost. This resulted in
180 dropped connections and sometimes bounces generated by a peer sending
181 to this system.
254f38d1 182
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183JH/11 Harden plaintext authenticator against a badly misconfigured client-send
184 string. Previously it was possible to cause undefined behaviour in a
185 library routine (usually a crash). Found by "zerons".
186
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187JH/12 Bug 2384: fix "-bP smtp_receive_timeout". Previously it returned no
188 output.
189
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190JH/13 Bug 2386: Fix builds with Dane under LibreSSL 2.9.0 onward. Some old
191 API was removed, so update to use the newer ones.
192
3c55eef2 193JH/14 Bug 1891: Close the log file if receiving a non-smtp message, without
00c0dd4e 194 any timeout set, is taking a long time. Previously we would hang on to a
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195 rotated logfile "forever" if the input was arriving with long gaps
196 (a previous attempt to fix addressed lack, for a long time, of initial
197 input).
198
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199HS/01 Bug 2390: Use message_id for tempfile creation to avoid races in a
200 shared (NFS) environment. The length of the tempfile name is now
201 4 + 16 ("hdr.$message_exim_id") which might break on file
202 systems which restrict the file name length to lower values.
203 (It was "hdr.$pid".)
204
7d8d08c4 205HS/02 Bug 2390: Use message_id for tempfile creation to avoid races in a
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206 shared (NFS) environment.
207
7d8d08c4 208HS/03 Bug 2392: exigrep does case sensitive *option* processing (as it
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209 did for all versions <4.90). Notably -M, -m, --invert, -I may be
210 affected.
211
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212JH/15 Use unsigned when creating bitmasks in macros, to avoid build errors
213 on some platforms for bit 31.
214
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215JH/16 GnuTLS: rework ciphersuite strings under recent library versions. Thanks
216 to changes apparently associated with TLS1.3 handling some of the APIs
217 previously used were either nonfunctional or inappropriate. Strings
218 like TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM__AEAD:256
219 and TLS1.2:ECDHE_SECP256R1__RSA_SHA256__AES_128_CBC__SHA256:128 replace
220 the previous TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256 .
221 This affects log line X= elements, the $tls_{in,out}_cipher variables,
222 and the use of specific cipher names in the encrypted= ACL condition.
223
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224JH/17 OpenSSL: the default openssl_options now disables ssl_v3.
225
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226JH/18 GnuTLS: fix $tls_out_ocsp under hosts_request_ocsp. Previously the
227 verification result was not updated unless hosts_require_ocsp applied.
228
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229JH/19 Bug 2398: fix listing of a named-queue. Previously, even with the option
230 queue_list_requires_admin set to false, non-admin users were denied the
231 facility.
232
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233JH/20 Bug 2389: fix server advertising of usable certificates, under GnuTLS in
234 directory-of-certs mode. Previously they were advertised despite the
235 documentation.
236
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237JH/21 The smtp transport option "hosts_noproxy_tls" is now unset by default.
238 A single TCP connection by a client will now hold a TLS connection open
239 for multiple message deliveries, by default. Previoud the default was to
240 not do so.
241
59c0959a 242JH/22 The smtp transport option "hosts_try_dane" now enables all hosts by
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243 default. If built with the facility, DANE will be used. The facility
244 SUPPORT_DANE is now enabled in the prototype build Makefile "EDITME".
245
246JH/23 The build default is now for TLS to be included; the SUPPORT_TLS define
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247 is replaced with DISABLE_TLS. Either USE_GNUTLS or (the new) USE_OPENSSL
248 must be defined and you must still, unless you define DISABLE_TLS, manage
249 the the include-dir and library-file requirements that go with that
250 choice. Non-TLS builds are still supported.
59c0959a 251
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252JH/24 Fix duplicated logging of peer name/address, on a transport connection-
253 reject under TFO.
96eb7d2a 254
efad2f41 255JH/25 The smtp transport option "hosts_try_fastopen" now enables all hosts by
4e48d56c 256 default. If the platform supports and has the facility enabled, it will
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257 be requested on all coneections.
258
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259JH/26 The PIPE_CONNECT facility is promoted from experimental status and is now
260 controlled by the build-time option SUPPORT_PIPE_CONNECT.
261
6ee11061 262PP/01 Unbreak heimdal_gssapi, broken in 4.92.
0a5441fc 263
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264JH/27 Bug 2404: Use the main-section configuration option "dsn_from" for
265 success-DSN messages. Previously the From: header was always the default
266 one for these; the option was ignored.
6ee11061 267
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268JH/28 Fix the timeout on smtp response to apply to the whole response.
269 Previously it was reset for every read, so a teergrubing peer sending
270 single bytes within the time limit could extend the connection for a
271 long time. Credit to Qualsys Security Advisory Team for the discovery.
272
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273JH/29 Fix DSN Final-Recipient: field. Previously it was the post-routing
274 delivery address, which leaked information of the results of local
275 forwarding. Change to the original envelope recipient address, per
276 standards.
277
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278JH/30 Bug 2411: Fix DSN generation when RFC 3461 failure notification is
279 requested. Previously not bounce was generated and a log entry of
280 error ignored was made.
281
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282JH/31 Avoid re-expansion in ${sort } expansion. (CVE-2019-13917)
283
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284JH/32 Introduce a general tainting mechanism for values read from the input
285 channel, and values derived from them. Refuse to expand any tainted
286 values, to catch one form of exploit.
287
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288JH/33 Bug 2413: Fix dkim_strict option. Previously the expansion result
289 was unused and the unexpanded text used for the test. Found and
290 fixed by Ruben Jenster.
291
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292JH/34 Fix crash after TLS shutdown. When the TCP/SMTP channel was left open,
293 an attempt to use a TLS library read routine dereffed a nul pointer,
294 causing a segfault.
295
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296JH/35 Bug 2409: filter out-of-spec chars from callout response before using
297 them in our smtp response.
298
9c6881f8 299JH/36 Have the general router option retry_use_local_part default to true when
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300 any of the restrictive preconditions are set (to anything). Previously it
301 was only for check_local user. The change removes one item of manual
302 configuration which is required for proper retries when a remote router
303 handles a subset of addresses for a domain.
304
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305JH/37 Appendfile: when evaluating quota use (non-quota_size_regex) take the file
306 link count into consideration.
307
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308HS/04 Fix handling of very log lines in -H files. If a -<key> <value> line
309 caused the extension of big_buffer, the following lines were ignored.
310
311JH/38 Bug 1395: Teach the DNS negative-cache about TTL value from the SOA in
312 accordance with RFC 2308. Previously there was no expiry, so a longlived
313 receive process (eg. due to ACL delays) versus a short SOA value could
314 surprise.
315
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316HS/05 Handle trailing backslash gracefully. (CVE-2019-15846)
317
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318JH/39 Promote DMARC support to mainline.
319
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320JH/40 Bug 2452: Add a References: header to DSNs.
321
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322JH/41 With GnuTLS 3.6.0 (and later) do not attempt to manage Diffie-Hellman
323 parameters. The relevant library call is documented as "Deprecated: This
324 function is unnecessary and discouraged on GnuTLS 3.6.0 or later. Since
325 3.6.0, DH parameters are negotiated following RFC7919."
326
ab0e957b 327HS/06 Change the default of dnssec_request_domains to "*"
40ed89b3 328
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329JH/42 Bug 2545: Fix CHUNKING for all RCPT commands rejected. Previously we
330 carried on and emitted a BDAT command, even when PIPELINING was not
331 active.
332
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333JH/43 Bug 2465: Fix taint-handling in dsearch lookup. Previously a nontainted
334 buffer was used for the filename, resulting in a trap when tainted
335 arguments (eg. $domain) were used.
336
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337JH/44 With OpenSSL 1.1.1 (onwards) disable renegotiation for TLS1.2 and below;
338 recommended to avoid a possible server-load attack. The feature can be
339 re-enabled via the openssl_options main cofiguration option.
340
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341JH/45 local_scan API: documented the current smtp_printf() call. This changed
342 for version 4.90 - adding a "more data" boolean to the arguments.
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343 Bumped the ABI version number also, this having been missed previously;
344 release versions 4.90 to 4.92.3 inclusive were effectively broken in
345 respect of usage of smtp_printf() by either local_scan code or libraries
346 accessed via the ${dlfunc } expansion item. Both will need coding
347 adjustment for any calls to smtp_printf() to match the new function
348 signature; a FALSE value for the new argument is always safe.
b2d54f83 349
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350JH/46 FreeBSD: fix use of the sendfile() syscall. The shim was not updating
351 the file-offset (which the Linux syscall does, and exim expects); this
352 resulted in an indefinite loop.
353
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354JH/47 ARC: fix crash in signing, triggered when a configuration error failed
355 to do ARC verification. The Authentication-Results: header line added
356 by the configuration then had no ARC item.
357
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359Exim version 4.92
360-----------------
361
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362JH/01 Remove code calling the customisable local_scan function, unless a new
363 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
364
365JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
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366 non-signal-safe functions being used.
367
368JH/03 Bug 2269: When presented with a received message having a stupidly large
369 number of DKIM-Signature headers, disable DKIM verification to avoid
370 a resource-consumption attack. The limit is set at twenty.
9723f966 371
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372JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
373 report of oldest_pass in ${authres } in consequence, and separate out
374 some descriptions of reasons for verification fail.
375
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376JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
377 files in the spool were present and unlocked. A queue-runner could spot
378 them, resulting in a duplicate delivery. Fix that by doing the unlock
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379 after the unlink. Investigation by Tim Stewart. Take the opportunity to
380 add more error-checking on spoolfile handling while that code is being
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381 messed with.
382
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383PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
384 No known attacks, no CVE, this is defensive hardening.
385
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386JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
387 a queue-runner could start a delivery while other operations were ongoing.
388 Cutthrough delivery was a common victim, resulting in duplicate delivery.
389 Found and investigated by Tim Stewart. Fix by using the open message data
390 file handle rather than opening another, and not locally closing it (which
391 releases a lock) for that case, while creating the temporary .eml format
392 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
393
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394JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
395 $sender_verify_failure/$recipient_verify_failure to "random".
396
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397JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
398 legitimate.
399
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400JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
401 Previously this would segfault.
402
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403JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
404 segfault.
405
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406JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
407 like zero, since the resolver should be doing this for us, But we need one
408 as a CNAME but no MX presence gets the CNAME returned; we need to check
409 that doesn't point to an MX to declare it "no MX returned" rather than
410 "error, loop". A new main option is added so the older capability of
411 following some limited number of chain links is maintained.
412
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413JH/12 Add client-ip info to non-pass iprev ${authres } lines.
414
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415JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
416 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
417 now-deprecated earlier definitions used only specified the range up to TLS
418 1.2 (in the older-version library docs).
419
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420JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
421
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422JH/15 Rework TLS client-side context management. Stop using a global, and
423 explicitly pass a context around. This enables future use of TLS for
424 connections to service-daemons (eg. malware scanning) while a client smtp
425 connection is using TLS; with cutthrough connections this is quite likely.
426
5054c4fd 427JH/16 Fix ARC verification to do AS checks in reverse order.
611b1961
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428
429JH/17 Support a "tls" option on the ${readsocket } expansion item.
5054c4fd 430
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431JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
432 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
433 Previously the "utf8" would be re-prepended for every additional message.
434
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435JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
436 Previously thery were accepted, resulting in issues when attempting to
437 forward messages to a non-supporting MTA.
438
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439PP/02 Let -n work with printing macros too, not just options.
440
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441JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
442 one parent address was copied, and bogus data was used at delivery-logging
443 time. Either a crash (after delivery) or bogus log data could result.
444 Discovery and analysis by Tim Stewart.
445
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446PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
447 Previously if the string ended mid-character, we did not insert the
448 promised '?' replacement.
449
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450PP/04 Documentation: current string operators work on bytes, not codepoints.
451
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452JH/21 Change as many as possible of the global flags into one-bit bitfields; these
453 should pack well giving a smaller memory footprint so better caching and
454 therefore performance. Group the declarations where this can't be done so
455 that the byte-sized flag variables are not interspersed among pointer
456 variables, giving a better chance of good packing by the compiler.
457
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458JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
459 non-null, to avoid issues with sites running BATV. Previously reports were
460 sent with an empty envelope sender so looked like bounces.
461
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462JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
463 The ignore_error flag wasn't being returned from the filter subprocess so
464 was not set for later routers. Investigation and fix by Matthias Kurz.
465
7ea1237c 466JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
570cb1bd 467 and a msg:complete for the whole, when a message is manually removed using
7ea1237c
MK
468 -Mrm. Developement by Matthias Kurz, hacked on by JH.
469
ebda598a
JH
470JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
471 a "Gnu special" function, asprintf() in the DB utility binary builds; I
472 hope that is portable enough.
473
570cb1bd
JH
474JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
475 requiring a known-CA anchor certificate; make it now rely entirely on the
476 TLSA as an anchor. Checking the name on the leaf cert against the name
477 on the A-record for the host is still done for TA (but not for EE mode).
478
eb58ddf5
JH
479JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
480 included in delivery lines for non-proxied connections, when compiled with
481 SUPPORT_SOCKS and running with proxy logging enabled.
482
ffbc20ed
MK
483JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
484 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
485 move the existing event to fire before the normal logging of message
486 failure so that custom logging is bracketed by normal logging.
487
4e928780
MK
488JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
489 msg:fail:internal event. Developement by Matthias Kurz.
490
75c121f0 491JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
059f2ace 492 far too small for todays use of crypto signatures stored there. Go all
75c121f0
JH
493 the way to the max DNS message size of 64kB, even though this might be
494 overmuch for IOT constrained device use.
495
e30f4f43
JH
496JH/31 Fix a bad use of a copy function, which could be used to pointlessly
497 copy a string over itself. The library routine is documented as not
498 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
499
a45431fa
JH
500JH/32 For main options check_spool_space and check_inode_space, where the
501 platform supports 64b integers, support more than the previous 2^31 kB
502 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
503 the previous G, M, k.
504
c0fb53b7
JH
505JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
506 $authenticated_fail_id variable on authentication failure. Previously
507 it was unset.
508
6aac3239
JH
509JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
510 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
511 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
512 GNUTLS_SEC_PARAM_MEDIUM.
513
5a2a0989
JH
514JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server
515 side. Previously we would continue as if no SNI had been received.
516
de6f74f2 517JH/36 Harden the handling of string-lists. When a list consisted of a sole
b72f857f
JH
518 "<" character, which should be a list-separator specification, we walked
519 off past the nul-terimation.
520
de6f74f2
JH
521JH/37 Bug 2341: Send "message delayed" warning MDNs (restricted to external
522 causes) even when the retry time is not yet met. Previously they were
523 not, meaning that when (say) an account was over-quota and temp-rejecting,
524 and multiple senders' messages were queued, only one sender would get
525 notified on each configured delay_warning cycle.
526
aa6e77af 527JH/38 Bug 2351: Log failures to extract envelope addresses from message headers.
aaf3e414 528
25fa0868
JH
529JH/39 OpenSSL: clear the error stack after an SSL_accept(). With anon-auth
530 cipher-suites, an error can be left on the stack even for a succeeding
531 accept; this results in impossible error messages when a later operation
532 actually does fail.
533
cb6bd80f
JH
534AM/01 Bug 2359: GnuTLS: repeat lowlevel read and write operations while they
535 return error codes indicating retry. Under TLS1.3 this becomes required.
536
537JH/40 Fix the feature-cache refresh for EXPERIMENTAL_PIPE_CONNECT. Previously
538 it only wrote the new authenticators, resulting in a lack of tracking of
539 peer changes of ESMTP extensions until the next cache flush.
518b70e9 540
56ac062a
JH
541JH/41 Fix the loop reading a message header line to check for integer overflow,
542 and more-often against header_maxsize. Previously a crafted message could
543 induce a crash of the recive process; now the message is cleanly rejected.
544
ae63862b
MA
545JH/42 Bug 2366: Fix the behaviour of the dkim_verify_signers option. It had
546 been totally disabled for all of 4.91. Discovery and fix by "Mad Alex".
547
9723f966 548
bb264f6b
JH
549Exim version 4.91
550-----------------
459fca58 551
c39c8870 552GF/01 DEFER rather than ERROR on redis cluster MOVED response.
bb264f6b
JH
553 When redis_servers is set to a list of > 1 element, and the Redis servers
554 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
555 case of MOVED into a DEFER case instead, thus moving the query onto the
556 next server in the list. For a cluster of N elements, all N servers must
557 be defined in redis_servers.
c39c8870 558
0800ef83
GF
559GF/02 Catch and remove uninitialized value warning in exiqsumm
560 Check for existence of @ARGV before looking at $ARGV[0]
561
459fca58
JH
562JH/01 Replace the store_release() internal interface with store_newblock(),
563 which internalises the check required to safely use the old one, plus
564 the allocate and data copy operations duplicated in both (!) of the
565 extant use locations.
566
944e8b37
JH
567JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
568 modifier. This matches the restriction on the commandline.
569
bbfb5dcd
JH
570JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
571 Previously only the last row was returned.
572
a05d3e34
JH
573JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
574 we assumed that tags in the header were well-formed, and parsed the
575 element content after inspecting only the first char of the tag.
576 Assumptions at that stage could crash the receive process on malformed
577 input.
578
ce93c6d8
JH
579JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
580 While running the DKIM ACL we operate on the Permanent memory pool so that
581 variables created with "set" persist to the DATA ACL. Also (at any time)
582 DNS lookups that fail create cache records using the Permanent pool. But
583 expansions release any allocations made on the current pool - so a dnsdb
584 lookup expansion done in the DKIM ACL releases the memory used for the
585 DNS negative-cache, and bad things result. Solution is to switch to the
586 Main pool for expansions.
587 While we're in that code, add checks on the DNS cache during store_reset,
588 active in the testsuite.
589 Problem spotted, and debugging aided, by Wolfgang Breyha.
590
2577f55f
JH
591JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
592 When none of the hosts presented to a transport match an already-open
593 connection, close it and proceed with the list. Previously we would
594 queue the message. Spotted by Lena with Yahoo, probably involving
595 round-robin DNS.
596
5b6f7658
JH
597JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
598 Previously a spurious "250 OK id=" response was appended to the proper
599 failure response.
600
c11d665d
JH
601JH/08 The "support for" informational output now, which built with Content
602 Scanning support, has a line for the malware scanner interfaces compiled
603 in. Interface can be individually included or not at build time.
e5ba8aa7
JH
604
605JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
606 by the template makefile "src/EDITME". The "STREAM" support for an older
607 ClamAV interface method is removed.
c11d665d 608
ba0e37b1
JH
609JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
610 rows affected is given instead).
611
96508de1
JH
612JH/11 The runtime Berkeley DB library version is now additionally output by
613 "exim -d -bV". Previously only the compile-time version was shown.
614
06fdb9f7
JH
615JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
616 SMTP connection. Previously, when one had more receipients than the
617 first, an abortive onward connection was made. Move to full support for
618 multiple onward connections in sequence, handling cutthrough connection
619 for all multi-message initiating connections.
620
f83a760f
JH
621JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
622 routers. Previously, a multi-recipient message would fail to match the
623 onward-connection opened for the first recipient, and cause its closure.
624
f1fed05b
JH
625JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
626 a timeout on read on a GnuTLS initiating connection, resulting in the
627 initiating connection being dropped. This mattered most when the callout
628 was marked defer_ok. Fix to keep the two timeout-detection methods
629 separate.
630
051d5efa
JH
631JH/15 Relax results from ACL control request to enable cutthrough, in
632 unsupported situations, from error to silently (except under debug)
633 ignoring. This covers use with PRDR, frozen messages, queue-only and
634 fake-reject.
635
cf3cd306
HSHR
636HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
637
744976d4
JH
638JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
639 metadata, resulting in a crash in free().
640
aab9a843 641PP/01 Fix broken Heimdal GSSAPI authenticator integration.
7be14582 642 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
aab9a843 643 Broken also in d185889f4, with init system revamp.
7be14582 644
83d2a861
JH
645JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
646 Previously we abruptly closed the connection after reading a malware-
647 found indication; now we go on to read the "scan ok" response line,
648 and send a quit.
649
6741531c
JH
650JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
651 ACL. Previously, a crash would result.
652
85e03244
JH
653JH/19 Speed up macro lookups during configuration file read, by skipping non-
654 macro text after a replacement (previously it was only once per line) and
655 by skipping builtin macros when searching for an uppercase lead character.
656
c0635b6d
JH
657JH/20 DANE support moved from Experimental to mainline. The Makefile control
658 for the build is renamed.
659
b808677c
JH
660JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
661 was allocated for every new TLS startup, meaning one per message. Fix
662 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
663
6678c382
JH
664JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
665 reported the original. Fix to report (as far as possible) the ACL
666 result replacing the original.
667
dec766a1
WB
668JH/23 Fix memory leak during multi-message connections using STARTTLS under
669 OpenSSL. Certificate information is loaded for every new TLS startup,
670 and the resources needed to be freed.
671
15ae19f9
JH
672JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
673
e6532c4a
JH
674JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
675 was not propagated.
676
2556b3c6
SA
677JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
678 DATA response info to the (existing) per-recipient response info for
679 the "C=" log element. It can have useful tracking info from the
680 destination system. Patch from Simon Arlott.
681
fc8cd529
JH
682JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
683 length value. Previously this would segfault.
684
71bb51e0
HSHR
685HS/02 Support Avast multiline protoocol, this allows passing flags to
686 newer versions of the scanner.
687
e04bfa34
JH
688JH/28 Ensure that variables possibly set during message acceptance are marked
689 dead before release of memory in the daemon loop. This stops complaints
690 about them when the debug_store option is enabled. Discovered specifically
691 for sender_rate_period, but applies to a whole set of variables.
c232fc99
JH
692 Do the same for the queue-runner and queue-list loops, for variables set
693 from spool message files. Do the same for the SMTP per-message loop, for
694 certain variables indirectly set in ACL operations.
e04bfa34 695
ecce6d9a
JH
696JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
697 as a multi-recipient message from a mailinglist manager). The coding had
698 an arbitrary cutoff number of characters while checking for more input;
699 enforced by writing a NUL into the buffer. This corrupted long / fast
700 input. The problem was exposed more widely when more pipelineing of SMTP
701 responses was introduced, and one Exim system was feeding another.
702 The symptom is log complaints of SMTP syntax error (NUL chars) on the
703 receiving system, and refused recipients seen by the sending system
704 (propating to people being dropped from mailing lists).
705 Discovered and pinpointed by David Carter.
706
c9cf9ac4
JH
707JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
708 replaced by the ${authresults } expansion.
709
b3b37076
JH
710JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
711
830832c9
HSHR
712HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
713 allows proper process termination in container environments.
714
f64e8b5f
JH
715JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
716 Previously the "final dot" had a newline after it; ensure it is CR,LF.
717
8f0776b5
JH
718JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
719 and "err_perm", deprecated since 4.83 when the RFC-defined words
720 "temperror" and "permerror" were introduced.
721
857eaf37
JH
722JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
723 transport-filters or DKIM-signing. The restriction was lost in the
724 consolidation of verify-callout and delivery SMTP handling.
5add7dc4 725 Extend the restriction to also cover ARC-signing.
857eaf37 726
c85476e9
JH
727JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
728 in defer=pass mode supply a 450 to the initiator. Previously the message
729 would be spooled.
730
405074ad
PP
731PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
732 tls_require_ciphers is used as before.
733
eb445b04
HSHR
734HS/03 Malware Avast: Better match the Avast multiline protocol. Add
735 "pass_unscanned". Only tmpfails from the scanner are written to
736 the paniclog, as they may require admin intervention (permission
737 denied, license issues). Other scanner errors (like decompression
738 bombs) do not cause a paniclog entry.
ad93c40f 739
d342446f
JH
740JH/36 Fix reinitialisation of DKIM logging variable between messages.
741 Previously it was possible to log spurious information in receive log
742 lines.
743
a28050f8
JH
744JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
745 triggered odd behaviour from Outlook Express clients.
746
ddd16464
PP
747PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
748 suffix list.
749
321ef002
JH
750JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
751 since the IETF WG has not yet settled on that versus the original
752 "bare" representation.
753
3203e7ba
JH
754JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
755 Previously the millisecond value corrupted the output.
756 Fix also for syslog_pid=no and log_selector +pid, for which the pid
757 corrupted the output.
758
bbfb5dcd 759
acfc18c3
PP
760Exim version 4.90
761-----------------
762
763JH/01 Rework error string handling in TLS interface so that the caller in
764 more cases is responsible for logging. This permits library-sourced
765 string to be attached to addresses during delivery, and collapses
766 pairs of long lines into single ones.
767
856d1e16
PP
768PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
769 during configuration. Wildcards are allowed and expanded.
770
b9df1829
JH
771JH/02 Rework error string handling in DKIM to pass more info back to callers.
772 This permits better logging.
773
875512a3
JH
774JH/03 Rework the transport continued-connection mechanism: when TLS is active,
775 do not close it down and have the child transport start it up again on
776 the passed-on TCP connection. Instead, proxy the child (and any
777 subsequent ones) for TLS via a unix-domain socket channel. Logging is
778 affected: the continued delivery log lines do not have any DNSSEC, TLS
5013d912 779 Certificate or OCSP information. TLS cipher information is still logged.
875512a3 780
fc3f96af
JH
781JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
782 identical IP addresses on different listening ports. Will also affect
783 "exiwhat" output.
784
98913c8e
BK
785PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
786 add noisy ifdef guards to special-case this sillyness.
787 Patch from Bernd Kuhls.
788
8d909960
JH
789JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
790 than 255 are no longer allowed.
791
7006ee24
JH
792JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
793 Disable the session-cache too, which might reduce our load. Since we
794 currrectly use a new context for every connection, both as server and
795 client, there is no benefit for these.
796 GnuTLS appears to not support tickets server-side by default (we don't
797 call gnutls_session_ticket_enable_server()) but client side is enabled
798 by default on recent versions (3.1.3 +) unless the PFS priority string
799 is used (3.2.4 +).
800
6e411084
PP
801PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
802 <https://reproducible-builds.org/specs/source-date-epoch/>.
803
4c2471ca
JH
804JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
805 the check for any unsuccessful recipients did not notice the limit, and
806 erroneously found still-pending ones.
807
4e910c01
JH
808JH/08 Pipeline CHUNKING command and data together, on kernels that support
809 MSG_MORE. Only in-clear (not on TLS connections).
810
42055a33
JH
811JH/09 Avoid using a temporary file during transport using dkim. Unless a
812 transport-filter is involved we can buffer the headers in memory for
813 creating the signature, and read the spool data file once for the
814 signature and again for transmission.
815
eeb35890
JH
816JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
817 4.77 as the kernel support then wasn't solid, having issues in 64bit
7d758a6a 818 mode. Now, it's been long enough. Add support for FreeBSD also.
eeb35890 819
b7d3afcf
JH
820JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
821 case where the routing stage had gathered several addresses to send to
822 a host before calling the transport for the first, we previously failed
823 to close down TLS in the old transport process before passing the TCP
824 connection to the new process. The new one sent a STARTTLS command
825 which naturally failed, giving a failed delivery and bloating the retry
826 database. Investigation and fix prototype from Wolfgang Breyha.
827
40525d07
JH
828JH/12 Fix check on SMTP command input synchronisation. Previously there were
829 false-negatives in the check that the sender had not preempted a response
830 or prompt from Exim (running as a server), due to that code's lack of
a5ffa9b4 831 awareness of the SMTP input buffering.
40525d07 832
f33875c3
PP
833PP/04 Add commandline_checks_require_admin option.
834 Exim drops privileges sanely, various checks such as -be aren't a
835 security problem, as long as you trust local users with access to their
836 own account. When invoked by services which pass untrusted data to
837 Exim, this might be an issue. Set this option in main configuration
838 AND make fixes to the calling application, such as using `--` to stop
839 processing options.
840
a5ffa9b4
JH
841JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
842 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
843 responses to those, into a single TLS record each way (this usually means
844 a single packet). As a side issue, smtp_enforce_sync now works on TLS
845 connections.
925ac8e4 846
6600985a
PP
847PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
848 affects you only if you're dancing at the edge of the param size limits.
849 If you are, and this message makes sense to you, then: raise the
850 configured limit or use OpenSSL 1.1. Nothing we can do for older
851 versions.
852
ac4d558b
JH
853JH/14 For the "sock" variant of the malware scanner interface, accept an empty
854 cmdline element to get the documented default one. Previously it was
855 inaccessible.
856
e69636bc
JH
857JH/15 Fix a crash in the smtp transport caused when two hosts in succession
858 are unsuable for non-message-specific reasons - eg. connection timeout,
859 banner-time rejection.
860
a843a57e
JH
861JH/16 Fix logging of delivery remote port, when specified by router, under
862 callout/hold.
863
8e041ae0
PP
864PP/06 Repair manualroute's ability to take options in any order, even if one
865 is the name of a transport.
833c70bc
PP
866 Fixes bug 2140.
867
35a04365
HSHR
868HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
869
4226691b
JH
870JH/17 Change the list-building routines interface to use the expanding-string
871 triplet model, for better allocation and copying behaviour.
872
d185889f
JH
873JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
874 Previously it was constructed the first time a possibly-matching string
875 was met in the configuration file input during startup; now it is done
876 during compilation.
877
0a6c178c
JH
878JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
879 compatible one, to avoid the (poorly documented) possibility of a config
880 file in the working directory redirecting the DB files, possibly correpting
02745400 881 some existing file. CVE-2017-10140 assigned for BDB.
0a6c178c 882
fae8970d
JH
883JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
884 cache-hot. Previously, although the result was properly cached, the
885 initial verify call returned a defer.
886
ad1a76fe 887JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
14de8063
JH
888 the main verify for receipient in uncached-mode.
889
ad1a76fe
JH
890JH/22 Retire historical build files to an "unsupported" subdir. These are
891 defined as "ones for which we have no current evidence of testing".
892
135e9496
JH
893JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
894 if present. Previously it was ignored.
895
f2ed27cf
JH
896JH/24 Start using specified-initialisers in C structure init coding. This is
897 a C99 feature (it's 2017, so now considered safe).
898
7eb0e5d2
JH
899JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
900 if was a fixed-sized field and bitmask ops via macros; it is now more
901 extensible.
902
4f9f4be4
903PP/07 GitHub PR 56: Apply MariaDB build fix.
904 Patch provided by Jaroslav Škarvada.
905
dc4de9cc
PP
906PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
907 during Coverity cleanups [4.87 JH/47]
908 Diagnosis and fix provided by Michael Fischer v. Mollard.
909
ea18931d
JH
910JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
911 the right size to place the terminating semicolon on its own folded
912 line, the header hash was calculated to an incorrect value thanks to
913 the (relaxed) space the fold became.
914
0768462d 915HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
2cee425a
HSHR
916 and confused the parent.
917
848214f7
JH
918JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
919 which could crash as a result. This could lead to undeliverable messages.
920
9e0ed81f
JH
921JH/28 Logging: "next input sent too soon" now shows where input was truncated
922 for log purposes.
923
2540f2f8
JH
924JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
925 matters on fast-turnover and PID-randomising systems, which were getting
926 out-of-order delivery.
927
e5ab0ba9
JH
928JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
929 a possibly-overlapping copy. The symptom was that "Remote host closed
930 connection in response to HELO" was logged instead of the actual 4xx
931 error for the HELO.
932
e99a3a6c
JH
933JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
934 Previously only that bufferd was discarded, resulting in SYMTP command
935 desynchronisation.
936
18067c75
JH
937JH/32 DKIM: when a message has multiple signatures matching an identity given
938 in dkim_verify_signers, run the dkim acl once for each. Previously only
939 one run was done. Bug 2189.
940
72934ba7
JH
941JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
942 "panic the current process" to "deliberately defer". The panic log is
943 still written with the problem list name; the mail and reject logs now
944 get a temp-reject line for the message that was being handled, saying
945 something like "domains check lookup or other defer". The SMTP 451
946 message is still "Temporary local problem".
947
625667b6
JH
948JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
949 A crafted sequence of BDAT commands could result in in-use memory beeing
b488395f
JH
950 freed. CVE-2017-16943.
951
952HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
953 from SMTP input. Previously it was always done; now only done for DATA
954 and not BDAT commands. CVE-2017-16944.
625667b6 955
d21bf202
JH
956JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
957 to the message (such as an overlong header line). Previously this was
958 not done and we did not exit BDAT mode. Followon from the previous item
959 though a different problem.
960
acfc18c3 961
fd047340 962Exim version 4.89
acfc18c3 963-----------------
4c57a40e 964
9427e879 965JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
4c04137d 966 than -2003 did; needs libidn2 in addition to libidn.
fd047340 967
7b283890
JH
968JH/02 The path option on a pipe transport is now expanded before use.
969
4c57a40e
PP
970PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
971 Patch provided by "Björn", documentation fix added too.
972
5d036699
JH
973JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
974 missing a wire-to-host endian conversion.
975
f4630439
JH
976JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
977 close after a BDAT command line could be taken as a following command,
978 giving a synch failure. Fix by only checking for synch immediately
979 before acknowledging the chunk.
980
f988ce57
JS
981PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
982 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
983 macro. Patches provided by Josh Soref.
984
bd8fbe36
JH
985JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
986 Previously we did not; the RFC seems ambiguous and VRFY is not listed
987 by IANA as a service extension. However, John Klensin suggests that we
988 should.
989
990JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
b895f4b2
JH
991 the dkim code may be unix-mode line endings rather than smtp wire-format
992 CRLF, so prepend a CR to any bare LF.
fd047340 993
bd8fbe36 994JH/07 Rationalise the coding for callout smtp conversations and transport ones.
902fbd69
JH
995 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
996
bd8fbe36
JH
997JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
998 the first were themselves being wrongly included in the feed into dkim
999 processing; with most chunk sizes in use this resulted in an incorrect
1000 body hash calculated value.
1001
eea19017
JH
1002JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
1003 DKIM signature block, for verification. Although advised against by
1004 standards it is specifically not ruled illegal.
1005
44e6651b
JH
1006JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
1007
1008JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
1009 missing a body hash (the bh= tag).
1010
1011JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
1012 It seems that HAProxy sends the Proxy Protocol information in clear and
1013 only then does a TLS startup, so do the same.
1014
1015JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
1016 TCP connections (such as for Spamd) unless the daemon successfully set
1017 Fast Open mode on its listening sockets. This fixes breakage seen on
1018 too-old kernels or those not configured for Fast Open, at the cost of
1019 requiring both directions being enabled for TFO, and TFO never being used
1020 by non-daemon-related Exim processes.
1021
1022JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
1023 endings, at least on the first header line. Try to canonify any that get
1024 past that check, despite the cost.
1025
b6040544
JH
1026JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
1027 now limited to an arbitrary five deep, while parsing addresses with the
1028 strip_excess_angle_brackets option enabled.
1029
f700ea4d
PP
1030PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
1031 instead leave the unprompted TLS handshake in socket buffer for the
1032 TLS library to consume.
1033
da88acae
PP
1034PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
1035
f6ef9370
PP
1036PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
1037
90341c71
JH
1038JH/16 Drop variables when they go out of scope. Memory management drops a whole
1039 region in one operation, for speed, and this leaves assigned pointers
1040 dangling. Add checks run only under the testsuite which checks all
1041 variables at a store-reset and panics on a dangling pointer; add code
1042 explicitly nulling out all the variables discovered. Fixes one known
1043 bug: a transport crash, where a dangling pointer for $sending_ip_address
1044 originally assigned in a verify callout, is re-used.
1045
1ec2ab36
PP
1046PP/06 Drop '.' from @INC in various Perl scripts.
1047
1048PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
1049
1050PP/08 Reduce a number of compilation warnings under clang; building with
1051 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
1052 should be warning-free.
1053
8b2b9480
PP
1054JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
1055
1056HS/01 Fix portability problems introduced by PP/08 for platforms where
1057 realloc(NULL) is not equivalent to malloc() [SunOS et al].
1058
d953610f
HSHR
1059HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
1060 chunk. This allows us to accept broken chunked messages. We need a more
1061 general solution here.
1062
7dc5f827
PP
1063PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
1064 already-broken messages in the queue.
1065
4bb432cb
PP
1066JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
1067
3b1a84c8
PP
1068JH/19 Fix reference counting bug in routing-generated-address tracking.
1069
902fbd69 1070
8d042305
JH
1071Exim version 4.88
1072-----------------
4c57a40e 1073
9094b84b
JH
1074JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
1075 supports it and a size is available (ie. the sending peer gave us one).
8d042305 1076
03d5892b
JH
1077JH/02 The obsolete acl condition "demime" is removed (finally, after ten
1078 years of being deprecated). The replacements are the ACLs
1079 acl_smtp_mime and acl_not_smtp_mime.
1080
4b0fe319
JH
1081JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
1082 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
1083 or even an in-clear connection were permitted. Now, if the host lookup
1084 was dnssec and dane was requested then the host is only used if the
1085 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
1086 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
1087 if one fails this test.
1088 This means that a poorly-configured remote DNS will make it incommunicado;
1089 but it protects against a DNS-interception attack on it.
1090
789f8a4f
JH
1091JH/04 Bug 1810: make continued-use of an open smtp transport connection
1092 non-noisy when a race steals the message being considered.
1093
23bb6982 1094JH/05 If main configuration option tls_certificate is unset, generate a
f59aaaaa 1095 self-signed certificate for inbound TLS connections.
23bb6982 1096
0bd1b1ed 1097JH/06 Bug 165: hide more cases of password exposure - this time in expansions
f42deca9 1098 in rewrites and routers.
0bd1b1ed 1099
20b9a2dc
JH
1100JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
1101 and logged a warning sing 4.83; now they are a configuration file error.
1102
05392bbc
JH
1103JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
1104 (lacking @domain). Apply the same qualification processing as RCPT.
1105
1a6230a3
JH
1106JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
1107
cfab9d68
JH
1108JH/10 Support ${sha256:} applied to a string (as well as the previous
1109 certificate).
1110
98c82a3d
JH
1111JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
1112 a cutthrough deliver is pending, as we always want to make a connection.
1113 This also avoids re-routing the message when later placing the cutthrough
1114 connection after a verify cache hit.
1115 Do not update it with the verify result either.
1116
1117JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
1118 when routing results in more than one destination address.
1119
ae8386f0
JH
1120JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
1121 signing (which inhibits the cutthrough capability). Previously only
1122 the presence of an option was tested; now an expansion evaluating as
1123 empty is permissible (obviously it should depend only on data available
1124 when the cutthrough connection is made).
1125
0d9fa8c0
JH
1126JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
1127 the relevant preceding SMTP command did not note the pipelining mode.
1128
3581f321
JH
1129JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
1130 Previously they were not counted.
1131
ef3a1a30
JH
1132JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
1133 as one having no matching records. Previously we deferred the message
1134 that needed the lookup.
1135
4c04137d 1136JH/17 Fakereject: previously logged as a normal message arrival "<="; now
27b9e5f4
JH
1137 distinguished as "(=".
1138
1435d4b2
JH
1139JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
1140 for missing MX records. Previously it only worked for missing A records.
1141
eea0defe
JB
1142JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
1143
1144JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
1145 after the data-go-ahead and data-ack. Patch from Jason Betts.
860cdda2 1146
4c04137d 1147JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
72a201e2
TM
1148 even for a "none" policy. Patch from Tony Meyer.
1149
1c788856
JH
1150JH/22 Fix continued use of a connection for further deliveries. If a port was
1151 specified by a router, it must also match for the delivery to be
1152 compatible.
1153
e3b1f624
JH
1154JH/23 Bug 1874: fix continued use of a connection for further deliveries.
1155 When one of the recipients of a message was unsuitable for the connection
1156 (has no matching addresses), we lost track of needing to mark it
1157 deferred. As a result mail would be lost.
1158
a57ce043
JH
1159JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
1160
f59aaaaa 1161JH/25 Decoding ACL controls is now done using a binary search; the source code
2d009132
JH
1162 takes up less space and should be simpler to maintain. Merge the ACL
1163 condition decode tables also, with similar effect.
d7bed771 1164
d1f9fb42
JH
1165JH/26 Fix problem with one_time used on a redirect router which returned the
1166 parent address unchanged. A retry would see the parent address marked as
1167 delivered, so not attempt the (identical) child. As a result mail would
1168 be lost.
1169
92b0827a
JH
1170JH/27 Fix a possible security hole, wherein a process operating with the Exim
1171 UID can gain a root shell. Credit to http://www.halfdog.net/ for
1172 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
1173 itself :(
1174
ddf1b11a
JH
1175JH/28 Enable {spool,log} filesystem space and inode checks as default.
1176 Main config options check_{log,spool}_{inodes,space} are now
1177 100 inodes, 10MB unless set otherwise in the configuration.
1178
3cc3f762
JH
1179JH/29 Fix the connection_reject log selector to apply to the connect ACL.
1180 Previously it only applied to the main-section connection policy
1181 options.
1182
ae5afa61
JH
1183JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
1184
317e40ac
PP
1185PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
1186 by me. Added RFC7919 DH primes as an alternative.
1187
8b0fb68e
PP
1188PP/02 Unbreak build via pkg-config with new hash support when crypto headers
1189 are not in the system include path.
1190
ad7fc6eb 1191JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
f59aaaaa 1192 GnuTLS, when a session startup failed (eg because the client disconnected)
ad7fc6eb
JH
1193 Exim did stdio operations after fclose. This was exposed by a recent
1194 change which nulled out the file handle after the fclose.
ad7fc6eb 1195
ee5b1e28
JH
1196JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
1197 signed directly by the cert-signing cert, rather than an intermediate
1198 OCSP-signing cert. This is the model used by LetsEncrypt.
1199
5ddc9771
JH
1200JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
1201
8d73599f
JH
1202HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
1203 an incoming connection.
1204
446415f5
HSHR
1205HS/02 Bug 1802: Do not half-close the connection after sending a request
1206 to rspamd.
1207
8e53a4fc
HSHR
1208HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
1209 fallback to "prime256v1".
8d042305 1210
87cb4a16 1211JH/34 SECURITY: Use proper copy of DATA command in error message.
4c57a40e 1212 Could leak key material. Remotely exploitable. CVE-2016-9963.
87cb4a16
JH
1213
1214
0d9b78be
JH
1215Exim version 4.87
1216-----------------
4c57a40e 1217
82d14d6a
JH
1218JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
1219 and 3.4.4 - once the server is enabled to respond to an OCSP request
1220 it does even when not requested, resulting in a stapling non-aware
1221 client dropping the TLS connection.
0d9b78be 1222
6c6d6e48
TF
1223TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
1224 support variable-length bit vectors. No functional change.
1225
ac881e27
TF
1226TF/02 Improve the consistency of logging incoming and outgoing interfaces.
1227 The I= interface field on outgoing lines is now after the H= remote
1228 host field, same as incoming lines. There is a separate
1229 outgoing_interface log selector which allows you to disable the
1230 outgoing I= field.
1231
c8899c20
JH
1232JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
1233 If not running log_selector +smtp_connection the mainlog would be held
1234 open indefinitely after a "too many connections" event, including to a
1235 deleted file after a log rotate. Leave the per net connection logging
1236 leaving it open for efficiency as that will be quickly detected by the
1237 check on the next write.
1238
f1b81d81
HSHR
1239HS/01 Bug 1671: Fix post transport crash.
1240 Processing the wait-<transport> messages could crash the delivery
1241 process if the message IDs didn't exist for some reason. When
1242 using 'split_spool_directory=yes' the construction of the spool
1243 file name failed already, exposing the same netto behaviour.
1244
f38917cc
JH
1245JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
1246 mime_regex ACL conditions.
1247
895fbaf2
JH
1248JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
1249 to DSN fail messages (bounces): remote IP, remote greeting, remote response
1250 to HELO, local diagnostic string.
1251
805bb5c3
JH
1252JH/05 Downgrade message for a TLS-certificate-based authentication fail from
1253 log line to debug. Even when configured with a tls authenticator many
1254 client connections are expected to not authenticate in this way, so
1255 an authenticate fail is not an error.
1256
56c2a7be
HSHR
1257HS/02 Add the Exim version string to the process info. This way exiwhat
1258 gives some more detail about the running daemon.
1259
4c04137d 1260JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
14b3c5bc
JH
1261 matter for fast-change records such as DNSBLs.
1262
6f6dedcc
JH
1263JH/07 Bug 1678: Always record an interface option value, if set, as part of a
1264 retry record, even if constant. There may be multiple transports with
1265 different interface settings and the retry behaviour needs to be kept
1266 distinct.
1267
0f557e90
JH
1268JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
1269
1270JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
1271
ec0eb1a3
JH
1272JH/10 Bug 840: fix log_defer_output option of pipe transport
1273
41e93589
JH
1274JH/11 Bug 830: use same host for all RCPTS of a message, even under
1275 hosts_randomize. This matters a lot when combined with mua_wrapper.
1276
98b98887 1277JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
376d2ec0
JH
1278 ${quote_pgsql:<string>} operator.
1279
98b98887
JH
1280JH/13 Bug 1708: avoid misaligned access in cached lookup.
1281
858e91c2
JH
1282JH/14 Change header file name for freeradius-client. Relevant if compiling
1283 with Radius support; from the Gentoo tree and checked under Fedora.
1284
1285JH/15 Bug 1712: Introduce $prdr_requested flag variable
1286
6ff55e50
JH
1287JH/16 Bug 1714: Permit an empty string as expansion result for transport
1288 option transport_filter, meaning no filtering.
1289
3b957582
JB
1290JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
1291
23f3dc67
JH
1292JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
1293 defaults to "*" (all hosts). The variable is now available when not built
4c04137d 1294 with TLS, default unset, mainly to enable keeping the testsuite sane.
23f3dc67
JH
1295 If a server certificate is not supplied (via tls_certificate) an error is
1296 logged, and clients will find TLS connections fail on startup. Presumably
1297 they will retry in-clear.
1298 Packagers of Exim are strongly encouraged to create a server certificate
1299 at installation time.
1300
240c288f
JH
1301HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
1302 with the $config_file variable.
1303
5ef5dd52
JB
1304JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
1305 in transport context, after the attempt, and per-recipient. The latter type
1306 is per host attempted. The event data is the error message, and the errno
1307 information encodes the lookup type (A vs. MX) used for the (first) host,
4c04137d 1308 and the trailing two digits of the smtp 4xx response.
5ef5dd52 1309
e161710d
GF
1310GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
1311 to write to mainlog (or rejectlog, paniclog) in the window between file
1312 creation and permissions/ownership being changed. Particularly affects
1313 installations where exicyclog is run as root, rather than exim user;
1314 result is that the running daemon panics and dies.
1315
a159f203
JH
1316JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
1317
7f06582c
JH
1318JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
1319 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
1320 "pri" and "weight". Note that the previous implicit priority given by the
1321 list order is no longer honoured.
1322
4c04137d 1323JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
abe1010c
JH
1324 for DKIM processing.
1325
f0989ec0
JH
1326JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
1327 by defining SUPPORT_SOCKS.
74f150bf 1328
cee5f132
JH
1329JH/26 Move PROXY support from Experimental to mainline, enabled for a build
1330 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
e6d2a989
JH
1331 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
1332 variables are renamed to proxy_{local,external}_{address,port}.
cee5f132 1333
8c5d388a
JH
1334JH/27 Move Internationalisation support from Experimental to mainline, enabled
1335 for a build by defining SUPPORT_I18N
1336
2d8d625b
JH
1337JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
1338 of the query string, and make ${quote_redis:} do that quoting.
1339
0cbf2b82
JH
1340JH/29 Move Events support from Experimental to mainline, enabled by default
1341 and removable for a build by defining DISABLE_EVENT.
1342
f2f2c91b
JH
1343JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
1344
ce325893
JH
1345JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
1346 cached by the daemon.
1347
de78e2d5
JH
1348JH/32 Move Redis support from Experimental to mainline, enabled for a build
1349 by defining LOOKUP_REDIS. The libhiredis library is required.
1350
379ba7d0
JH
1351JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
1352 keys are given for lookup.
1353
f444c2c7
JH
1354JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
1355 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
07c73177
JH
1356 only supported when built with TLS support. The PolarSSL SHA routines
1357 are still used when the TLS library is too old for convenient support.
f444c2c7 1358
a57b6200
JH
1359JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
1360 openssl_options), for security. OpenSSL forces this from version 1.1.0
1361 server-side so match that on older versions.
1362
07c73177 1363JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
fa01e4f8 1364 allocation for $value could be released as the expansion processing
07c73177 1365 concluded, but leaving the global pointer active for it.
fa01e4f8 1366
4f6ae5c3
JH
1367JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
1368 and to use the domains and local_parts ACL conditions.
1369
1bc460a6
JH
1370JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
1371 incorrectly not doubled on cutthrough transmission, hence seen as a
1372 body-termination at the receiving system - resulting in truncated mails.
62ac2eb7 1373 Commonly the sender saw a TCP-level error, and retransmitted the message
1bc460a6
JH
1374 via the normal store-and-forward channel. This could result in duplicates
1375 received - but deduplicating mailstores were liable to retain only the
1376 initial truncated version.
1377
ab9152ff 1378JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
df3def24 1379
67e87fcf
JH
1380JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1381
ab9152ff
JH
1382JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1383 we're in there, support oversigning also; bug 1309.
1384
af483912
JH
1385JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1386
bc3c7bb7 1387HS/04 Add support for keep_environment and add_environment options.
df3def24 1388
13559da6
JH
1389JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1390 either intentional arithmetic overflow during PRNG, or testing config-
1391 induced overflows.
1392
59eaad2b
JH
1393JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1394 delivery resulted in actual delivery. Cancel cutthrough before DATA
1395 stage.
1396
f9334a28
JH
1397JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1398 rejects a recipient: pass the reject to the originator.
1399
dc8091e7
JH
1400JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1401 Many were false-positives and ignorable, but it's worth fixing the
1402 former class.
1403
dfe7d917
JH
1404JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1405 for the new environment-manipulation done at startup. Move the routines
1406 from being local to tls.c to being global via the os.c file.
1407
93cc2d6e
JH
1408JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1409 an extract embedded as result-arg for a map, the first arg for extract
1410 is unavailable so we cannot tell if this is a numbered or keyed
1411 extraction. Accept either.
1412
13559da6 1413
9c695f6d
JH
1414Exim version 4.86
1415-----------------
4c57a40e 1416
9c695f6d
JH
1417JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1418 expanded.
1419
506900af
JH
1420JH/02 The smtp transport option "multi_domain" is now expanded.
1421
ad07e9ad
JH
1422JH/03 The smtp transport now requests PRDR by default, if the server offers
1423 it.
1424
01a4a5c5 1425JH/04 Certificate name checking on server certificates, when exim is a client,
b3ef41c9 1426 is now done by default. The transport option tls_verify_cert_hostnames
01a4a5c5
JH
1427 can be used to disable this per-host. The build option
1428 EXPERIMENTAL_CERTNAMES is withdrawn.
1429
cb1d7830 1430JH/05 The value of the tls_verify_certificates smtp transport and main options
0e0f3f56 1431 default to the word "system" to access the system default CA bundle.
cb1d7830
JH
1432 For GnuTLS, only version 3.0.20 or later.
1433
610ff438 1434JH/06 Verification of the server certificate for a TLS connection is now tried
6d580f19
JH
1435 (but not required) by default. The verification status is now logged by
1436 default, for both outbound TLS and client-certificate supplying inbound
1437 TLS connections
610ff438 1438
f926e272
JH
1439JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1440 sites use this now.
1441
50dc7409
JH
1442JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1443 Status Notification (bounce) messages are now MIME format per RFC 3464.
1444 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1445 under the control of the dsn_advertise_hosts option, and routers may
1446 have a dsn_lasthop option.
1447
0f0c8159
JH
1448JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1449 default, modifiable by a malware= option. The list separator for
23763898 1450 the options can now be changed in the usual way. Bug 68.
4e71661f 1451
1ad6489e
JH
1452JH/10 The smtp_receive_timeout main option is now expanded before use.
1453
aeaf5db3
JH
1454JH/11 The incoming_interface log option now also enables logging of the
1455 local interface on delivery outgoing connections.
1456
5032d1cf
JH
1457JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1458 if the interface and destination host and port all match.
1459
7e8360e6
JH
1460JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1461 /defer_ok option.
1462
c5f280e2
AL
1463JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1464 Patch from Andrew Lewis.
1465
fd4d8871 1466JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
dc7b3d36 1467 now supports optional time-restrictions, weighting, and priority
fd4d8871
R
1468 modifiers per server. Patch originally by <rommer@active.by>.
1469
1470JH/16 The spamd_address main option now supports a mixed list of local
2aad5761
JH
1471 and remote servers. Remote servers can be IPv6 addresses, and
1472 specify a port-range.
fd4d8871 1473
23763898
JH
1474JH/17 Bug 68: The spamd_address main option now supports an optional
1475 timeout value per server.
1476
2ad78978
JH
1477JH/18 Bug 1581: Router and transport options headers_add/remove can
1478 now have the list separator specified.
1479
8a512ed5 1480JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
cfab9d68 1481 option values.
8a512ed5 1482
82c0c8ea 1483JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
f69979cf
JH
1484 under OpenSSL.
1485
cc00f4af
JH
1486JH/21 Support for the A6 type of dns record is withdrawn.
1487
82c0c8ea
JH
1488JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1489 rather than the verbs used.
1490
b980ed83
JH
1491JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1492 from 255 to 1024 chars.
1493
6c9ed72e
JH
1494JH/24 Verification callouts now attempt to use TLS by default.
1495
cfab9d68 1496HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
99c1bb4e 1497 are generic router options now. The defaults didn't change.
50dc7409 1498
f846c8f5
JH
1499JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1500 Original patch from Alexander Shikoff, worked over by JH.
1501
fd4c285c
HSHR
1502HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1503 files if ZCAT_COMMAND is not executable.
1504
4c04137d 1505JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
fd7f7910 1506
d2a2c69b
JH
1507JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1508
8241d8dd
JH
1509JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1510 Normally benign, it bites when the pair was led to by a CNAME;
4c04137d 1511 modern usage is to not canonicalize the domain to a CNAME target
8241d8dd
JH
1512 (and we were inconsistent anyway for A-only vs AAAA+A).
1513
1f12df4d
JH
1514JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1515
1f155f8e
JH
1516JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1517 when evaluating $sender_host_dnssec.
1518
1705dd20
JH
1519JH/31 Check the HELO verification lookup for DNSSEC, adding new
1520 $sender_helo_dnssec variable.
1521
038597d2
PP
1522JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1523
474f71bf
JH
1524JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1525
7137ca4b
JH
1526JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1527
dcb1095c
JH
1528JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1529 documented as working, but never had. Support all but $spam_report.
1530
2f460950
JH
1531JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1532 added for tls authenticator.
1533
2f680c0c
HSHR
1534HS/03 Add perl_taintmode main config option
1535
9c695f6d 1536
e449c3b0
TL
1537Exim version 4.85
1538-----------------
4c57a40e 1539
e449c3b0
TL
1540TL/01 When running the test suite, the README says that variables such as
1541 no_msglog_check are global and can be placed anywhere in a specific
1542 test's script, however it was observed that placement needed to be near
1543 the beginning for it to behave that way. Changed the runtest perl
1544 script to read through the entire script once to detect and set these
1545 variables, reset to the beginning of the script, and then run through
1546 the script parsing/test process like normal.
1547
ac20058f
TL
1548TL/02 The BSD's have an arc4random API. One of the functions to induce
1549 adding randomness was arc4random_stir(), but it has been removed in
1550 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1551 function when detected.
1552
a9b8ec8b
JH
1553JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1554 cause callback expansion.
1555
6286d7c4
TL
1556TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1557 syntax errors in an expansion can be treated as a string instead of
1558 logging or causing an error, due to the internal use of bool_lax
1559 instead of bool when processing it.
1560
0f06b4f2 1561JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
d567a64d
JH
1562 server certificates when making smtp deliveries.
1563
be36e572
JH
1564JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1565
ac4ef9bd
JH
1566JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1567
0eb51736
TL
1568TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1569
c713ca4b
TL
1570TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1571 Merged patch from Sebastian Wiedenroth.
e449c3b0 1572
bd21a787
WB
1573JH/05 Fix results-pipe from transport process. Several recipients, combined
1574 with certificate use, exposed issues where response data items split
1575 over buffer boundaries were not parsed properly. This eventually
1576 resulted in duplicates being sent. This issue only became common enough
4c04137d 1577 to notice due to the introduction of connection certificate information,
bd21a787
WB
1578 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1579
8bc732e8
JH
1580JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1581 size buffer was used, resulting in syntax errors when an expansion
1582 exceeded it.
1583
a7fec7a7
JH
1584JH/07 Add support for directories of certificates when compiled with a GnuTLS
1585 version 3.3.6 or later.
1586
4c04137d 1587JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
774ef2d7
JH
1588 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1589 both become "event_action", the variables become $event_name, $event_data
aec45841 1590 and $event_defer_errno. There is a new variable $verify_mode, usable in
723fe533
JH
1591 routers, transports and related events. The tls:cert event is now also
1592 raised for inbound connections, if the main configuration event_action
1593 option is defined.
774ef2d7 1594
eca4debb
TL
1595TL/06 In test suite, disable OCSP for old versions of openssl which contained
1596 early OCSP support, but no stapling (appears to be less than 1.0.0).
1597
8d692470
JH
1598JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1599 server certificate names available under the smtp transport option
1600 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1601 matches.
1602
e9477a08
JH
1603JH/10 Time-related extraction expansions from certificates now use the main
1604 option "timezone" setting for output formatting, and are consistent
1605 between OpenSSL and GnuTLS compilations. Bug 1541.
1606
ad4c5ff9
JH
1607JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1608 encoded parameter in the incoming message. Bug 1558.
8dea5edf
JH
1609
1610JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1611 include certificate info, eximon was claiming there were spoolfile
1612 syntax errors.
1613
3394b36a 1614JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
8dea5edf
JH
1615
1616JH/14 Log delivery-related information more consistently, using the sequence
1617 "H=<name> [<ip>]" wherever possible.
1618
3394b36a
TL
1619TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1620 are problematic for Debian distribution, omit them from the release
1621 tarball.
1622
ad4c5ff9
JH
1623JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1624
4c04137d 1625JH/16 Fix string representation of time values on 64bit time_t architectures.
ad4c5ff9
JH
1626 Bug 1561.
1627
1628JH/17 Fix a null-indirection in certextract expansions when a nondefault
1629 output list separator was used.
1630
8bc732e8 1631
1f0ebb98
TL
1632Exim version 4.84
1633-----------------
09728d20
TL
1634TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1635 checkers that were complaining about end of non-void function with no
1636 return.
1f0ebb98 1637
a612424f 1638JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
4c04137d 1639 This was a regression introduced in 4.83 by another bugfix.
a612424f
JH
1640
1641JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1642
1643TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
a9b8ec8b 1644 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
a612424f 1645
1f0ebb98 1646
c0e56233
TF
1647Exim version 4.83
1648-----------------
1649
1650TF/01 Correctly close the server side of TLS when forking for delivery.
1651
1652 When a message was received over SMTP with TLS, Exim failed to clear up
1653 the incoming connection properly after forking off the child process to
1654 deliver the message. In some situations the subsequent outgoing
1655 delivery connection happened to have the same fd number as the incoming
1656 connection previously had. Exim would try to use TLS and fail, logging
1657 a "Bad file descriptor" error.
1658
7245734e
TF
1659TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1660 utilities have not been installed.
1661
fd5dad68
JH
1662JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1663 temporary space as the ACL may create new global variables.
1664
5428a946
TL
1665TL/01 LDAP support uses per connection or global context settings, depending
1666 upon the detected version of the libraries at build time.
1667
a3c86431
TL
1668TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1669 to extract and use the src ip:port in logging and expansions as if it
8ded8589
TL
1670 were a direct connection from the outside internet. PPv2 support was
1671 updated based on HAProxy spec change in May 2014.
a3c86431 1672
aa26e137
JH
1673JH/02 Add ${listextract {number}{list}{success}{fail}}.
1674
5a1b8443
WB
1675TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1676 Properly escape header and check for NULL return.
1677
72c9e342
PP
1678PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1679 not dns_use_dnssec.
1680
76f44207
WB
1681JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1682
770747fd
MFM
1683TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1684 characters in header names, implemented as a verify condition.
1685 Contributed by Michael Fischer v. Mollard.
1686
8ddef691 1687TL/05 Rename SPF condition results err_perm and err_temp to standardized
982650ec
TL
1688 results permerror and temperror. Previous values are deprecated but
1689 still accepted. In a future release, err_perm and err_temp will be
1690 completely removed, which will be a backward incompatibility if the
1691 ACL tests for either of these two old results. Patch contributed by
8ddef691 1692 user bes-internal on the mailing list.
c0e56233 1693
b9c2e32f
AR
1694JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1695
e45a1c37
JH
1696JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1697 selectors, in both main and reject logs.
1698
67d81c10
JH
1699JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1700 failed delivery.
1701
b1f8e4f8
JH
1702JH/07 Add malware type "sock" for talking to simple daemon.
1703
511a6c14 1704JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
511a6c14
JH
1705
1706JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1707 routers/transports under cutthrough routing.
214042d2 1708
51c7471d
JH
1709JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1710 numbers. Touch up "bool" conditional to keep the same definition.
1711
3695be34
TL
1712TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1713
1e06383a
TL
1714JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1715
76146973
JH
1716JH/12 Expand items in router/transport headers_add or headers_remove lists
1717 individually rather than the list as a whole. Bug 1452.
1718
1719 Required for reasonable handling of multiple headers_ options when
1720 they may be empty; requires that headers_remove items with embedded
1721 colons must have them doubled (or the list-separator changed).
1722
8c8b8274
TL
1723TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1724 view the policy declared in the DMARC record. Currently, $dmarc_status
1725 is a combined value of both the record presence and the result of the
1726 analysis.
b1f8e4f8 1727
35aba663
JH
1728JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1729
8c51eead 1730JH/14 New options dnssec_request_domains, dnssec_require_domains on the
578897ea
JH
1731 dnslookup router and the smtp transport (applying to the forward
1732 lookup).
8c51eead 1733
deae092e
HS
1734TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1735 of ldap servers used for a specific lookup. Patch provided by Heiko
1736 Schlichting.
35aba663 1737
fd3b6a4a 1738JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
4e0983dc 1739 New variable $lookup_dnssec_authenticated for observability.
fd3b6a4a 1740
8d91c6dc
LT
1741TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1742 Patch submitted by Lars Timman.
1743
2b4a568d
JH
1744JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1745
d2af03f4
HS
1746TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1747 Requires trusted mode and valid format message id, aborts otherwise.
1748 Patch contributed by Heiko Schlichting.
1749
9d1c15ef
JH
1750JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1751 certextract with support for various fields. Bug 1358.
1752
44662487
JH
1753JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1754 is requested by default, modifiable by smtp transport option
6a8a60e0
JH
1755 hosts_request_ocsp.
1756
ed3bba5f 1757JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
6a8a60e0 1758 operate on certificate variables to give certificate fingerprints
9ef9101c 1759 Also new ${sha256:cert_variable}.
44662487 1760
8ccd00b1
JH
1761JH/23 The PRDR feature is moved from being Experimental into the mainline.
1762
8ded8589
TL
1763TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1764 Christian Aistleitner.
1765
f2de3a33
JH
1766JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1767
6eb02f88
TL
1768TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1769 file. Patch from Wolfgang Breyha.
1770
00bff6f6
JH
1771JH/25 Expand the coverage of the delivery $host and $host_address to
1772 client authenticators run in verify callout. Bug 1476.
1773
071c51f7
JH
1774JH/26 Port service names are now accepted for tls_on_connect_ports, to
1775 align with daemon_smtp_ports. Bug 72.
1776
a6d4c44e
TF
1777TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1778 support and error reporting did not work properly.
1779
3ae173e7
ACK
1780TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1781 and is readable. Patch from Andrew Colin Kissa.
1782
c13d09b8
TL
1783TL/14 Enhance documentation of ${run expansion and how it parses the
1784 commandline after expansion, particularly in the case when an
1785 unquoted variable expansion results in an empty value.
1786
0df4ab80
JH
1787JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1788
66be95e0
PP
1789PP/02 Fix internal collision of T_APL on systems which support RFC3123
1790 by renaming away from it. Addresses GH issue 15, reported by
1791 Jasper Wallace.
1792
1bd0d12b
JH
1793JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1794
0de7239e
TL
1795TL/15 SECURITY: prevent double expansion in math comparison functions
1796 (can expand unsanitized data). Not remotely exploitable.
1797 CVE-2014-2972
1798
fd3b6a4a 1799
2c422e6f 1800Exim version 4.82
98a90c36
PP
1801-----------------
1802
1803PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1804
12f69989
PP
1805PP/02 Make -n do something, by making it not do something.
1806 When combined with -bP, the name of an option is not output.
1807
54c90be1
PP
1808PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1809 by GnuTLS.
1810
1f4a55da
PP
1811PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1812 $sender_host_name and config options to manage this, and basic check
1813 routines.
1814
13363eba 1815PP/05 DSCP support for outbound connections and control modifier for inbound.
36a3ae5f 1816
66645890 1817PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
e402235f
PP
1818 (Only plugin which currently uses this is kerberos4, which nobody should
1819 be using, but we should make it available and other future plugins might
1820 conceivably use it, even though it would break NAT; stuff *should* be
1821 using channel bindings instead).
66645890 1822
a3fb9793 1823PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
f4ee74ac
PP
1824 name; added for Sendmail compatibility; requires admin caller.
1825 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1826 just ignore it); requires trusted caller.
a3fb9793 1827 Also parse but ignore: -Ac -Am -X<logfile>
f4ee74ac 1828 Bugzilla 1117.
a3fb9793 1829
d27f98fe 1830TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
98a90c36 1831
6822b909
TL
1832TL/02 Add +smtp_confirmation as a default logging option.
1833
e7568d51
TL
1834TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1835 Patch by Magnus Holmgren from 2007-02-20.
1836
ae0e32ee 1837TL/04 Bugzilla 1281 - Spec typo.
ca0ff207 1838 Bugzilla 1283 - Spec typo.
97f42f10 1839 Bugzilla 1290 - Spec grammar fixes.
ca0ff207
TL
1840
1841TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
ae0e32ee 1842
e2658fff
TL
1843TL/06 Add Experimental DMARC support using libopendmarc libraries.
1844
83712b39
TL
1845TL/07 Fix an out of order global option causing a segfault. Reported to dev
1846 mailing list by by Dmitry Isaikin.
1847
976b7e9f
JH
1848JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1849
be4a1376
JH
1850JH/02 Support "G" suffix to numbers in ${if comparisons.
1851
ec4b68e5
PP
1852PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1853
d7148a07
NM
1854NM/01 Bugzilla 1197 - Spec typo
1855 Bugzilla 1196 - Spec examples corrections
ec4b68e5 1856
585121e2 1857JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
ec4b68e5 1858
2519e60d
TL
1859PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1860 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1861 function.
a5f239e4 1862
13d08c90
PP
1863PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1864 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1865
bef3ea7f
JH
1866JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1867 "acl {{name}{arg}...}", and optional args on acl condition
1868 "acl = name arg..."
a5f239e4 1869
846726c5
JH
1870JH/05 Permit multiple router/transport headers_add/remove lines.
1871
3a796370
JH
1872JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1873
ea722490 1874JH/07 Avoid using a waiting database for a single-message-only transport.
8b260705
PP
1875 Performance patch from Paul Fisher. Bugzilla 1262.
1876
b1b05573
JH
1877JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1878 Bugzilla 884.
1879
362145b5
JH
1880JH/09 Add $headers_added variable, with content from use of ACL modifier
1881 add_header (but not yet added to the message). Bugzilla 199.
1882
3c0a92dc
JH
1883JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1884 Pulled from Bugzilla 817 by Wolfgang Breyha.
1885
6d7c6175
PP
1886PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1887 CVE-2012-5671
e78e6ecf 1888 (nb: this is the same fix as in Exim 4.80.1)
6d7c6175 1889
6f123593
JH
1890JH/11 Add A= logging on delivery lines, and a client_set_id option on
1891 authenticators.
1892
c8e2fc1e
JH
1893JH/12 Add optional authenticated_sender logging to A= and a log_selector
1894 for control.
1895
005ac57f
PP
1896PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1897
3f1df0e3
PP
1898PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1899 advertise SMTP AUTH mechanism to us, instead of a generic
1900 protocol violation error. Also, make Exim more robust to bad
1901 data from the Dovecot auth socket.
1902
67bd1ab3
TF
1903TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1904
1905 When a queue runner is handling a message, Exim first routes the
1906 recipient addresses, during which it prunes them based on the retry
1907 hints database. After that it attempts to deliver the message to
1908 any remaining recipients. It then updates the hints database using
1909 the retry rules.
1910
1911 So if a recipient address works intermittently, it can get repeatedly
1912 deferred at routing time. The retry hints record remains fresh so the
1913 address never reaches the final cutoff time.
1914
1915 This is a fairly common occurrence when a user is bumping up against
1916 their storage quota. Exim had some logic in its local delivery code
1917 to deal with this. However it did not apply to per-recipient defers
1918 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1919
1ddeb334
TF
1920 This change adds a proper retry rule check during routing so that the
1921 final cutoff time is checked against the message's age. We only do
1922 this check if there is an address retry record and there is not a
1923 domain retry record; this implies that previous attempts to handle
1924 the address had the retry_use_local_parts option turned on. We use
1925 this as an approximation for the destination being like a local
1926 delivery, as in LMTP.
67bd1ab3
TF
1927
1928 I suspect this new check makes the old local delivery cutoff check
1929 redundant, but I have not verified this so I left the code in place.
1930
326cdc37
TF
1931TF/02 Correct gecos expansion when From: is a prefix of the username.
1932
1933 Test 0254 submits a message to Exim with the header
1934
1935 Resent-From: f
1936
1937 When I ran the test suite under the user fanf2, Exim expanded
1938 the header to contain my full name, whereas it should have added
1939 a Resent-Sender: header. It erroneously treats any prefix of the
1940 username as equal to the username.
1941
1942 This change corrects that bug.
1943
f62514b3
GF
1944GF/01 DCC debug and logging tidyup
1945 Error conditions log to paniclog rather than rejectlog.
1946 Debug lines prefixed by "DCC: " to remove any ambiguity.
1947
eb505532
TF
1948TF/03 Avoid unnecessary rebuilds of lookup-related code.
1949
14c7b357
PP
1950PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1951 Bug spotted by Jeremy Harris; was flawed since initial commit.
1952 Would have resulted in OCSP responses post-SNI triggering an Exim
1953 NULL dereference and crash.
1954
94eaf700
PP
1955JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1956
6f5a440a
PP
1957PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1958 Bug detection, analysis and fix by Samuel Thibault.
1959 Bugzilla 1331, Debian bug #698092.
1960
514ee161
SC
1961SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1962
fd98a5c6
JH
1963JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1964 Server implementation by Todd Lyons, client by JH.
1965 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1966 config variable "prdr_enable" controls whether the server
1967 advertises the facility. If the client requests PRDR a new
1968 acl_data_smtp_prdr ACL is called once for each recipient, after
1969 the body content is received and before the acl_smtp_data ACL.
4c04137d 1970 The client is controlled by both of: a hosts_try_prdr option
fd98a5c6
JH
1971 on the smtp transport, and the server advertisement.
1972 Default client logging of deliveries and rejections involving
1973 PRDR are flagged with the string "PRDR".
1974
035c7f1e
PP
1975PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1976 fclose(). Diagnosis by Todd Lyons.
1977
ff284120
PP
1978PP/17 Update configure.default to handle IPv6 localhost better.
1979 Patch by Alain Williams (plus minor tweaks).
1980 Bugzilla 880.
1981
26e72755
PP
1982PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1983 This is now consistent with GnuTLS, and is now documented: the
1984 previous undocumented portable approach to treating the option as
1985 unset was to force an expansion failure. That still works, and
1986 an empty string is now equivalent.
1987
0fbd9bff
PP
1988PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1989 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1990 not performing validation itself.
1991
700d22f3
PP
1992PP/20 Added force_command boolean option to pipe transport.
1993 Patch from Nick Koston, of cPanel Inc.
1994
fcc8e047
JH
1995JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1996 Bugzilla 321, 823.
1997
4c04137d 1998TF/04 Added udpsend ACL modifier and hexquote expansion operator
7142daca 1999
8c020188
PP
2000PP/21 Fix eximon continuous updating with timestamped log-files.
2001 Broken in a format-string cleanup in 4.80, missed when I repaired the
2002 other false fix of the same issue.
2003 Report and fix from Heiko Schlichting.
2004 Bugzilla 1363.
2005
d13cdd30
PP
2006PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
2007 Report from Prashanth Katuri.
2008
e2fbf4a2
PP
2009PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
2010 It's SecureTransport, so affects any MacOS clients which use the
2011 system-integrated TLS libraries, including email clients.
2012
f4c1088b
PP
2013PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
2014 using a MIME ACL for non-SMTP local injection.
2015 Report and assistance in diagnosis by Warren Baker.
2016
c5c2182f
PP
2017TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
2018
73431ca9
JH
2019JH/16 Fix comparisons for 64b. Bugzilla 1385.
2020
2d07a215
TL
2021TL/09 Add expansion variable $authenticated_fail_id to keep track of
2022 last id that failed so it may be referenced in subsequent ACL's.
2023
a30a8861
TL
2024TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
2025 Alexander Miroch.
2026
33382dd9
TL
2027TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
2028 ldap library initialization, allowing self-signed CA's to be
2029 used. Also properly sets require_cert option later in code by
2030 using NULL (global ldap config) instead of ldap handle (per
2031 session). Bug diagnosis and testing by alxgomz.
6d7c6175 2032
046172e6
TL
2033TL/12 Enhanced documentation in the ratelimit.pl script provided in
2034 the src/util/ subdirectory.
2035
581d7bee 2036TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1a7b746d 2037 renamed to Transport Post Delivery Action by Jeremy Harris, as
9bdd29ad
TL
2038 EXPERIMENTAL_TPDA.
2039
2040TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
2041 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
2042 redis_servers = needs to be configured which will be used by the redis
2043 lookup. Patch from Warren Baker, of The Packet Hub.
2044
237b2cf2
TL
2045TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
2046
9fc5a352
TL
2047TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
2048 hostname or reverse DNS when processing a host list. Used suggestions
2049 from multiple comments on this bug.
1a7b746d 2050
b10e4ec2
TL
2051TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
2052
e2cebd74
TL
2053TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
2054 Missed a few lines, added it to make the runtest require no keyboard
2055 interaction.
2056
2057TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
2058 contains upper case chars. Make router use caseful_local_part.
2059
2519e60d
TL
2060TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
2061 support when GnuTLS has been built with p11-kit.
2062
e78e6ecf 2063
4263f395
PP
2064Exim version 4.80.1
2065-------------------
2066
2067PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
2068 CVE-2012-5671
2c422e6f 2069 This, or similar/improved, will also be change PP/11 of 4.82.
3c0a92dc 2070
ea722490 2071
b1770b6e 2072Exim version 4.80
0599f9cf
PP
2073-----------------
2074
2075PP/01 Handle short writes when writing local log-files.
2076 In practice, only affects FreeBSD (8 onwards).
2077 Bugzilla 1053, with thanks to Dmitry Isaikin.
2078
23c7e742
NM
2079NM/01 Bugzilla 949 - Documentation tweak
2080
b322aac8
NM
2081NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
2082 improved.
2083
4a891427
NM
2084NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
2085
c1e794ba 2086PP/02 Implemented gsasl authenticator.
b322aac8 2087
97753960
PP
2088PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
2089
2090PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
2091 `pkg-config foo` for cflags/libs.
2092
df6303fa
PP
2093PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
2094 with rest of GSASL and with heimdal_gssapi.
2095
7e6a8985
PP
2096PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
2097 `pkg-config foo` for cflags/libs for the TLS implementation.
2098
f1e05cc7 2099PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
20aa9dbd
PP
2100 properties get this fed in as external SSF. A number of robustness
2101 and debugging improvements to the cyrus_sasl authenticator.
b322aac8 2102
4c287009
PP
2103PP/08 cyrus_sasl server now expands the server_realm option.
2104
b98bb9ac
PP
2105PP/09 Bugzilla 1214 - Log authentication information in reject log.
2106 Patch by Jeremy Harris.
2107
4a6a987a
PP
2108PP/10 Added dbmjz lookup type.
2109
c45dd180 2110PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
c7955b11 2111
7db8d074
PP
2112PP/12 MAIL args handles TAB as well as SP, for better interop with
2113 non-compliant senders.
2114 Analysis and variant patch by Todd Lyons.
2115
eae0036b 2116NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
cfab9d68 2117 Bug report from Lars Müller <lars@samba.org> (via SUSE),
e0df1c83
DM
2118 Patch from Dirk Mueller <dmueller@suse.com>
2119
dec5017e
PP
2120PP/13 tls_peerdn now print-escaped for spool files.
2121 Observed some $tls_peerdn in wild which contained \n, which resulted
2122 in spool file corruption.
2123
c80c5570
PP
2124PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
2125 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
2126 or write after TLS renegotiation, which otherwise led to messages
2127 "Got SSL error 2".
2128
076b11e2
PP
2129TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
2130 as a tracking header (ie: a signed header comes before the signature).
2131 Patch from Wolfgang Breyha.
2132
5407bfff
JH
2133JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
2134 comma-sep list; embedded commas doubled.
2135
9e45c72b
PP
2136JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
2137
e74376d8
PP
2138PP/15 LDAP: Check for errors of TLS initialisation, to give correct
2139 diagnostics.
2140 Report and patch from Dmitry Banschikov.
2141
4c04137d 2142PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
da3ad30d
PP
2143 Removed SSL_clear() after SSL_new() which led to protocol negotiation
2144 failures. We appear to now support TLS1.1+ with Exim.
2145
7be682ca
PP
2146PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
2147 lets Exim select keys and certificates based upon TLS SNI from client.
3f0945ff
PP
2148 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
2149 before an outbound SMTP session. New log_selector, +tls_sni.
7be682ca 2150
ef840681
PP
2151PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
2152 NULL dereference. Report and patch from Alun Jones.
2153
5bfb4cdf
PP
2154PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
2155 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
2156 Not seeing resolver debug output on NetBSD, but suspect this is a
2157 resolver implementation change.
2158
c6e95d22
PP
2159PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
2160 Left warnings. Added "eximon gdb" invocation mode.
2161
9cbad13b
PP
2162PP/21 Defaulting "accept_8bitmime" to true, not false.
2163
9ee44efb
PP
2164PP/22 Added -bw for inetd wait mode support.
2165
6a6084f8
PP
2166PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
2167 locate the relevant includes and libraries. Made this the default.
2168
12dd53c7
PP
2169PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
2170 Bugzilla 1246, report and most of solution from Tomasz Kusy.
2171
9e45c72b 2172JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
97d17305
JH
2173 This may cause build issues on older platforms.
2174
17c76198
PP
2175PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
2176 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
2177 gnutls_require_mac & gnutls_require_protocols (no longer supported).
2178 Added SNI support via GnuTLS too.
af3498d6 2179 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
17c76198 2180
53947857 2181PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
3f7eeb86 2182
eae0036b 2183PP/27 Applied dnsdb SPF support patch from Janne Snabb.
8ee4b30e
PP
2184 Applied second patch from Janne, implementing suggestion to default
2185 multiple-strings-in-record handling to match SPF spec.
eae0036b 2186
9e45c72b 2187JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
2605c55b 2188
7390e768
PP
2189PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
2190 read-only, out of scope).
2191 Patch from Wolfgang Breyha, report from Stuart Northfield.
2192
08488c86
PP
2193PP/29 Fix three issues highlighted by clang analyser static analysis.
2194 Only crash-plausible issue would require the Cambridge-specific
2195 iplookup router and a misconfiguration.
2196 Report from Marcin Mirosław.
2197
6475bd82
PP
2198PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
2199
81f91683
PP
2200PP/31 %D in printf continues to cause issues (-Wformat=security), so for
2201 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
2202 As part of this, removing so much warning spew let me fix some minor
2203 real issues in debug logging.
2204
5779e6aa
PP
2205PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
2206 assignment on my part. Fixed.
2207
3375e053
PP
2208PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
2209 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
2210 Janne Snabb (who went above and beyond: thank you).
2211
2212PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
2213 string otherwise requires a connection and a bunch more work and it's
78e0c7a3
PP
2214 relatively easy to get wrong. Should also expose TLS library linkage
2215 problems.
3375e053 2216
9d26b8c0
PP
2217PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
2218 64-bit ${eval} (JH/03).
2219
57eb9e91 2220PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
b87a6e0e
PP
2221 GNU libc to support some of the 64-bit stuff, should not lead to
2222 conflicts. Defined before os.h is pulled in, so if a given platform
2223 needs to override this, it can.
2224
16880d1a
PP
2225PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
2226 protection layer was required, which is not implemented.
2227 Bugzilla 1254, patch from Wolfgang Breyha.
2228
a799883d
PP
2229PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
2230 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
2231 tls_dhparam take prime identifiers. Also unbreak combination of
2232 OpenSSL+DH_params+TLSSNI.
2233
3ecab157 2234PP/39 Disable SSLv2 by default in OpenSSL support.
f0f5a555 2235
0599f9cf 2236
867fcbf5
PP
2237Exim version 4.77
2238-----------------
2239
2240PP/01 Solaris build fix for Oracle's LDAP libraries.
2241 Bugzilla 1109, patch from Stephen Usher.
2242
f1a29782
TF
2243TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
2244
ab42bd23
TK
2245TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
2246 whitespace trailer
867fcbf5 2247
0ca0cf52
TF
2248TF/02 Fix a couple more cases where we did not log the error message
2249 when unlink() failed. See also change 4.74-TF/03.
2250
921b12ca
TF
2251TF/03 Make the exiwhat support code safe for signals. Previously Exim might
2252 lock up or crash if it happened to be inside a call to libc when it
2253 got a SIGUSR1 from exiwhat.
2254
2255 The SIGUSR1 handler appends the current process status to the process
2256 log which is later printed by exiwhat. It used to use the general
2257 purpose logging code to do this, but several functions it calls are
2258 not safe for signals.
2259
2260 The new output code in the SIGUSR1 handler is specific to the process
2261 log, and simple enough that it's easy to inspect for signal safety.
2262 Removing some special cases also simplifies the general logging code.
2263 Removing the spurious timestamps from the process log simplifies
2264 exiwhat.
2265
c99ce5c9
TF
2266TF/04 Improved ratelimit ACL condition.
2267
2268 The /noupdate option has been deprecated in favour of /readonly which
2269 has clearer semantics. The /leaky, /strict, and /readonly update modes
2270 are mutually exclusive. The update mode is no longer included in the
2271 database key; it just determines when the database is updated. (This
4c04137d 2272 means that when you upgrade Exim will forget old rate measurements.)
c99ce5c9
TF
2273
2274 Exim now checks that the per_* options are used with an update mode that
2275 makes sense for the current ACL. For example, when Exim is processing a
2276 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
2277 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
2278 must specify per_mail/readonly. If you omit the update mode it defaults to
2279 /leaky where that makes sense (as before) or /readonly where required.
2280
2281 The /noupdate option is now undocumented but still supported for
2282 backwards compatibility. It is equivalent to /readonly except that in
2283 ACLs where /readonly is required you may specify /leaky/noupdate or
2284 /strict/noupdate which are treated the same as /readonly.
2285
2286 A useful new feature is the /count= option. This is a generalization
2287 of the per_byte option, so that you can measure the throughput of other
2288 aggregate values. For example, the per_byte option is now equivalent
2289 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
2290
2291 The per_rcpt option has been generalized using the /count= mechanism
2292 (though it's more complicated than the per_byte equivalence). When it is
2293 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
2294 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
2295 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
2296 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
2297 Note that using per_rcpt with a non-readonly update mode in more than
2298 one ACL will cause the recipients to be double-counted. (The per_mail
2299 and per_byte options don't have this problem.)
2300
2301 The handling of very low rates has changed slightly. If the computed rate
2302 is less than the event's count (usually one) then this event is the first
2303 after a long gap. In this case the rate is set to the same as this event's
2304 count, so that the first message of a spam run is counted properly.
2305
2306 The major new feature is a mechanism for counting the rate of unique
2307 events. The new per_addr option counts the number of different
2308 recipients that someone has sent messages to in the last time period. It
2309 behaves like per_rcpt if all the recipient addresses are different, but
2310 duplicate recipient addresses do not increase the measured rate. Like
2311 the /count= option this is a general mechanism, so the per_addr option
2312 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
2313 example, measure the rate that a client uses different sender addresses
2314 with the options per_mail/unique=$sender_address. There are further
2315 details in the main documentation.
2316
3634fc25
TF
2317TF/05 Removed obsolete $Cambridge$ CVS revision strings.
2318
792e8a19
TF
2319TF/06 Removed a few PCRE remnants.
2320
5901f0ab
TF
2321TF/07 Automatically extract Exim's version number from tags in the git
2322 repository when doing development or release builds.
2323
7f2a2a43
PP
2324PP/02 Raise smtp_cmd_buffer_size to 16kB.
2325 Bugzilla 879. Patch from Paul Fisher.
e2ca7082 2326
061b7ebd
PP
2327PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
2328 Heavily based on revision 40f9a89a from Simon Arlott's tree.
2329 Bugzilla 97.
2330
e12f8c32
PP
2331PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
2332
9e949f00 2333PP/05 Variable $av_failed, true if the AV scanner deferred.
7f2a2a43
PP
2334 Bugzilla 1078. Patch from John Horne.
2335
2336PP/06 Stop make process more reliably on build failure.
2337 Bugzilla 1087. Patch from Heiko Schlittermann.
9e949f00 2338
555ae6af 2339PP/07 Make maildir_use_size_file an _expandable_ boolean.
ac53fcda
PP
2340 Bugzilla 1089. Patch from Heiko Schlittermann.
2341
2342PP/08 Handle ${run} returning more data than OS pipe buffer size.
2343 Bugzilla 1131. Patch from Holger Weiß.
555ae6af 2344
6f7fe114
PP
2345PP/09 Handle IPv6 addresses with SPF.
2346 Bugzilla 860. Patch from Wolfgang Breyha.
2347
c566dd90
PP
2348PP/10 GnuTLS: support TLS 1.2 & 1.1.
2349 Bugzilla 1156.
89f897c3
PP
2350 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
2351 Bugzilla 1095.
c566dd90 2352
d6cc7c78 2353PP/11 match_* no longer expand right-hand-side by default.
39257585
PP
2354 New compile-time build option, EXPAND_LISTMATCH_RHS.
2355 New expansion conditions, "inlist", "inlisti".
2356
0d0e4455
PP
2357PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
2358
3399bb60 2359PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
d690cbdc
PP
2360
2361PP/14 fix log_write() format string regression from TF/03.
2362 Bugzilla 1152. Patch from Dmitry Isaikin.
2363
0ca0cf52 2364
10906672
PP
2365Exim version 4.76
2366-----------------
2367
2368PP/01 The new ldap_require_cert option would segfault if used. Fixed.
2369
754a0503
PP
2370PP/02 Harmonised TLS library version reporting; only show if debugging.
2371 Layout now matches that introduced for other libraries in 4.74 PP/03.
2372
c0c7b2da
PP
2373PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
2374
e97d1f08
PP
2375PP/04 New "dns_use_edns0" global option.
2376
084c1d8c
PP
2377PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2378 Bugzilla 1098.
2379
4e7ee012
PP
2380PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2381 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
da80c2a8 2382
c8d52a00
PP
2383TK/01 Updated PolarSSL code to 0.14.2.
2384 Bugzilla 1097. Patch from Andreas Metzler.
2385
54e7ce4a
PP
2386PP/07 Catch divide-by-zero in ${eval:...}.
2387 Fixes bugzilla 1102.
2388
5ee6f336
PP
2389PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2390 Bugzilla 1104.
2391
c8d52a00 2392TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
6ea4a851
PP
2393 format-string attack -- SECURITY: remote arbitrary code execution.
2394
2395TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2396 time unintentionally subject to list matching rules, letting the header
2397 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2398 arbitrary string expansion). This allowed for information disclosure.
2399
2400PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2401 INT_MIN/-1 -- value coerced to INT_MAX.
c8d52a00 2402
10906672 2403
aa097c4c
NM
2404Exim version 4.75
2405-----------------
2406
4c04137d 2407NM/01 Workaround for PCRE version dependency in version reporting
aa097c4c
NM
2408 Bugzilla 1073
2409
7f3d9eff
TF
2410TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2411 This fixes portability to compilers other than gcc, notably
2412 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2413
159f52d2
TF
2414TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2415 makefiles for portability to HP-UX and POSIX correctness.
2416
0cc9542a
PP
2417PP/01 Permit LOOKUP_foo enabling on the make command-line.
2418 Also via indented variable definition in the Makefile.
2419 (Debugging by Oliver Heesakkers).
2420
f7274286
PP
2421PP/02 Restore caching of spamd results with expanded spamd_address.
2422 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2423
7b797365
PP
2424PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2425 Improves build reliability. Fix from: Frank Elsner
2426
caacae52
NM
2427NM/02 Fix wide character breakage in the rfc2047 coding
2428 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2429
09dcaba9
NM
2430NM/03 Allow underscore in dnslist lookups
2431 Fixes bug 1026. Patch from Graeme Fowler
2432
bc19a55b
PP
2433PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2434 Code patches from Adam Ciarcinski of NetBSD.
caacae52 2435
bd4c9759
NM
2436NM/04 Fixed exiqgrep to cope with mailq missing size issue
2437 Fixes bug 943.
2438
b72aab72
PP
2439PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2440 is logged, to avoid truncation. Patch from John Horne.
2441
2fe76745
PP
2442PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2443 Patch from Jakob Hirsch.
2444
76aa570c
PP
2445PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2446 SQL string expansion failure details.
2447 Patch from Andrey Oktyabrski.
2448
f1e5fef5
PP
2449PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2450 Patch from Simon Arlott.
2451
4d805ee9
PP
2452PP/09 New lookups functionality failed to compile on old gcc which rejects
2453 extern declarations in function scope.
2454 Patch from Oliver Fleischmann
2455
cd59ab18
PP
2456PP/10 Use sig_atomic_t for flags set from signal handlers.
2457 Check getgroups() return and improve debugging.
2458 Fixed developed for diagnosis in bug 927 (which turned out to be
2459 a kernel bug).
2460
332f5cf3
PP
2461PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2462 Patch from Mark Zealey.
2463
29cfeb94
PP
2464PP/12 Bugzilla 1056: Improved spamd server selection.
2465 Patch from Mark Zealey.
2466
660242ad
PP
2467PP/13 Bugzilla 1086: Deal with maildir quota file races.
2468 Based on patch from Heiko Schlittermann.
2469
bc4bc4c5
PP
2470PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2471 Patch from Uwe Doering, sign-off by Michael Haardt.
2472
2e64baa9
NM
2473NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2474 variable declaration deep within a block. Bug and patch from
2475 Dennis Davis.
2476
4c04137d 2477PP/15 lookups-Makefile IRIX compatibility coercion.
bddd7526 2478
6bac1a9a
PP
2479PP/16 Make DISABLE_DKIM build knob functional.
2480
552193f0
NM
2481NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2482 Patch by Simon Arlott
baeee2c1 2483
1b587e48
TF
2484TF/03 Fix valgrind.h portability to C89 compilers that do not support
2485 variable argument macros. Our copy now differs from upstream.
2486
aa097c4c 2487
8c07b69f
TF
2488Exim version 4.74
2489-----------------
2490
2491TF/01 Failure to get a lock on a hints database can have serious
2492 consequences so log it to the panic log.
2493
c0ea85ab
TF
2494TF/02 Log LMTP confirmation messages in the same way as SMTP,
2495 controlled using the smtp_confirmation log selector.
2496
0761d44e
TF
2497TF/03 Include the error message when we fail to unlink a spool file.
2498
0a349494
PP
2499DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2500 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2501 for maintaining out-of-tree patches for some time.
2502
2503PP/01 Bugzilla 139: Documentation and portability issues.
2504 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2505 Handle per-OS dynamic-module compilation flags.
2506
fea24b2e
PP
2507PP/02 Let /dev/null have normal permissions.
2508 The 4.73 fixes were a little too stringent and complained about the
2509 permissions on /dev/null. Exempt it from some checks.
2510 Reported by Andreas M. Kirchwitz.
2511
6545de78
PP
2512PP/03 Report version information for many libraries, including
2513 Exim version information for dynamically loaded libraries. Created
2514 version.h, now support a version extension string for distributors
2515 who patch heavily. Dynamic module ABI change.
2516
1670ef10
PP
2517PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2518 privilege escalation vulnerability whereby the Exim run-time user
2519 can cause root to append content of the attacker's choosing to
2520 arbitrary files.
2521
c0886197
PP
2522PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2523 (Wolfgang Breyha)
2524
b7487bce
PP
2525PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2526 If dropping privileges for untrusted macros, we disabled normal logging
2527 on the basis that it would fail; for the Exim run-time user, this is not
2528 the case, and it resulted in successful deliveries going unlogged.
2529 Fixed. Reported by Andreas Metzler.
2530
8c07b69f 2531
97fd1e48 2532Exim version 4.73
ed7f7860 2533-----------------
97fd1e48
PP
2534
2535PP/01 Date: & Message-Id: revert to normally being appended to a message,
2536 only prepend for the Resent-* case. Fixes regression introduced in
2537 Exim 4.70 by NM/22 for Bugzilla 607.
2538
6901c596
PP
2539PP/02 Include check_rfc2047_length in configure.default because we're seeing
2540 increasing numbers of administrators be bitten by this.
2541
a8c8d6b5
JJ
2542JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2543
77bb000f
PP
2544PP/03 Bugzilla 994: added openssl_options main configuration option.
2545
a29e5231
PP
2546PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2547
ec5a0394 2548PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
a29e5231 2549
55c75993
PP
2550PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2551
453a6645 2552PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
ec5a0394
PP
2553 without a peer certificate, leading to a segfault because of an
2554 assumption that peers always have certificates. Be a little more
453a6645
PP
2555 paranoid. Problem reported by Martin Tscholak.
2556
8544e77a
PP
2557PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2558 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2559 NB: ClamAV planning to remove STREAM in "middle of 2010".
3346ab01
PP
2560 CL also introduces -bmalware, various -d+acl logging additions and
2561 more caution in buffer sizes.
8544e77a 2562
83e029d5
PP
2563PP/09 Implemented reverse_ip expansion operator.
2564
ed7f7860
PP
2565PP/10 Bugzilla 937: provide a "debug" ACL control.
2566
7d9f747b
PP
2567PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2568
4b2241d2
PP
2569PP/12 Bugzilla 973: Implement --version.
2570
10385c15
PP
2571PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2572
dbc4b90d
PP
2573PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2574
532be449
PP
2575PP/15 Bugzilla 816: support multiple condition rules on Routers.
2576
6a8de854 2577PP/16 Add bool_lax{} expansion operator and use that for combining multiple
71265ae9
PP
2578 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2579 ignore trailing whitespace.
6a8de854 2580
5dc43717
JJ
2581JJ/02 prevent non-panic DKIM error from being sent to paniclog
2582
2583JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2584 "exim" to be used
55c75993 2585
3346ab01
PP
2586PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2587 Notification from Dr Andrew Aitchison.
2588
491fab4c
PP
2589PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2590 ExtendedDetectionInfo response format.
2591 Notification from John Horne.
2592
13eb9497
PP
2593PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2594 compatible.
2595
2596PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2597 XSL and documented dependency on system catalogs, with examples of how
2598 it normally works.
2599
7f36d675
DW
2600DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2601 access.
2602
c1d94452
DW
2603DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2604 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2605 configuration file which is writeable by the Exim user or group.
2606
e2f5dc15
DW
2607DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2608 of configuration files to cover files specified with the -C option if
2609 they are going to be used with root privileges, not just the default
2610 configuration file.
2611
cd25e41d
DW
2612DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2613 option (effectively making it always true).
2614
261dc43e
DW
2615DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2616 files to be used while preserving root privileges.
2617
fa32850b
DW
2618DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2619 that rogue child processes cannot use them.
2620
79d4bc3d
PP
2621PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2622 run-time user, instead of root.
2623
43236f35 2624PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2cfd3221
PP
2625 Exim run-time user without dropping privileges.
2626
fb08281f
DW
2627DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2628 result string, instead of calling string_vformat() twice with the same
2629 arguments.
3346ab01 2630
74935b98
DW
2631DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2632 for other users. Others should always drop root privileges if they use
2633 -C on the command line, even for a whitelisted configure file.
2634
90b6341f
DW
2635DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2636
57730b52
ML
2637NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2638
66581d1e 2639
465e92cf
JJ
2640Exim version 4.72
2641-----------------
2642
453a6645
PP
2643JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2644 $data_path, and $header_path variables; fixed documentation bugs and
2645 typos
465e92cf 2646
453a6645
PP
2647JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2648 exipick to access non-standard spools, including the "frozen" queue
2649 (Finput)
edae0343 2650
9bd3e22c
NM
2651NM/01 Bugzilla 965: Support mysql stored procedures.
2652 Patch from Alain Williams
2653
bb576ff7
NM
2654NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2655
5a1a5845
NM
2656NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2657 Patch from Andreas Metzler
2658
981a9fad
NM
2659NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2660 Patch from Kirill Miazine
2661
7fc497ee
NM
2662NM/05 Bugzilla 671: Added umask to procmail example.
2663
1a41defa
JJ
2664JJ/03 installed exipick 20100323.0, fixing doc bug
2665
a466095c 2666NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
b26eacf1 2667 directory. Notification and patch from Dan Rosenberg.
a466095c 2668
94a6bd0b
NM
2669TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2670
2671TK/02 Improve log output when DKIM signing operation fails.
2672
2673MH/01 Treat the transport option dkim_domain as a colon separated
2674 list, not as a single string, and sign the message with each element,
2675 omitting multiple occurences of the same signer.
2676
c1b141a8
NM
2677NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2678 Bugzilla 985, 986. Patch by Simon Arlott
94a6bd0b 2679
b26eacf1 2680NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
0d0c6357
NM
2681 Patch by Simon Arlott
2682
179c5980 2683PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
b26eacf1 2684 MBX locking. Notification from Dan Rosenberg.
179c5980 2685
9bd3e22c 2686
7c6d71af
NM
2687Exim version 4.71
2688-----------------
2689
7d9f747b 2690TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
7c6d71af 2691
f013fb92
NM
2692NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2693
0eb8eedd
NM
2694NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2695
663ee6d9
NM
2696NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2697
177ebd9b
NM
2698NM/04 Bugzilla 915: Flag broken perl installation during build.
2699
7c6d71af 2700
210f147e
NM
2701Exim version 4.70
2702-----------------
2703
cdd3bb85 2704TK/01 Added patch by Johannes Berg that expands the main option
e739e3d9 2705 "spamd_address" if it starts with a dollar sign.
cdd3bb85
TK
2706
2707TK/02 Write list of recipients to X-Envelope-Sender header when building
2708 the mbox-format spool file for content scanning (suggested by Jakob
7d9f747b 2709 Hirsch).
cdd3bb85
TK
2710
2711TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2712 (http://www.dcc-servers.net/) support via dccifd. Activated by
e739e3d9 2713 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
cdd3bb85
TK
2714
2715TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2716 by Mark Daniel Reidel <mr@df.eu>.
2717
210f147e
NM
2718NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2719 When building exim an external PCRE library is now needed -
2720 PCRE is a system library on the majority of modern systems.
2721 See entry on PCRE_LIBS in EDITME file.
2722
deafd5b3
NM
2723NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2724 conversation. Added nologin parameter to request.
7d9f747b 2725 Patch contributed by Kirill Miazine.
deafd5b3 2726
089793a4
TF
2727TF/01 Do not log submission mode rewrites if they do not change the address.
2728
5f16ca82
TF
2729TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2730
dae9d94e 2731NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
7d9f747b 2732 log files in place. Contributed by Roberto Lima.
dae9d94e 2733
7d9f747b 2734NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
3f0da4d0 2735
06864c44
TF
2736TF/03 Bugzilla 615: When checking the local_parts router precondition
2737 after a local_part_suffix or local_part_prefix option, Exim now
2738 does not use the address's named list lookup cache, since this
2739 contains cached lookups for the whole local part.
2740
65a7d8c3 2741NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
7d9f747b 2742 Robert Millan. Documentation is in experimental-spec.txt.
65a7d8c3 2743
23510047 2744TF/04 Bugzilla 668: Fix parallel build (make -j).
65a7d8c3 2745
7d9f747b 2746NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
5f28a6e8 2747
7d8eec3a 2748NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
7d9f747b 2749 Patch provided by Jan Srzednicki.
6c588e74 2750
89dec7b6
TF
2751TF/05 Leading white space used to be stripped from $spam_report which
2752 wrecked the formatting. Now it is preserved.
5f28a6e8 2753
a99de90c
TF
2754TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2755 that they are available at delivery time.
2756
e2803e40
TF
2757TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2758
7199e1ee
TF
2759TF/08 TLS error reporting now respects the incoming_interface and
2760 incoming_port log selectors.
2761
e276e04b
TF
2762TF/09 Produce a more useful error message if an SMTP transport's hosts
2763 setting expands to an empty string.
2764
ce552449 2765NM/06 Bugzilla 744: EXPN did not work under TLS.
7d9f747b 2766 Patch provided by Phil Pennock.
ce552449 2767
e765a0f1 2768NM/07 Bugzilla 769: Extraneous comma in usage fprintf
7d9f747b 2769 Patch provided by Richard Godbee.
e765a0f1 2770
4f054c63 2771NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
447de4b0 2772 acl_smtp_notquit, added index entry.
4f054c63 2773
7d9f747b
PP
2774NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2775 Patch provided by Eugene Bujak.
24c929a2 2776
7d9f747b
PP
2777NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2778 accept(). Patch provided by Maxim Dounin.
cf73943b 2779
b52bc06e 2780NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
7d9f747b 2781 Patch provided by Phil Pennock.
b52bc06e 2782
447de4b0
NM
2783NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2784
4c69d561 2785NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
7d9f747b 2786 Patch provided by Brad "anomie" Jorsch.
4c69d561 2787
d5c39246 2788NM/14 Bugzilla 622: Added timeout setting to transport filter.
7d9f747b 2789 Patch provided by Dean Brooks.
9b989985 2790
0b23848a
TK
2791TK/05 Add native DKIM support (does not depend on external libraries).
2792
8f3414a1 2793NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
7d9f747b 2794 Patch provided by Graeme Fowler.
e2aacdfd 2795
fb6f955d
NM
2796NM/16 Bugzilla 851: Documentation example syntax fix.
2797
2798NM/17 Changed NOTICE file to remove references to embedded PCRE.
8f3414a1 2799
7d9f747b
PP
2800NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2801 lsearch.
dbb0bf41 2802
7d9f747b
PP
2803NM/19 Bugzilla 745: TLS version reporting.
2804 Patch provided by Phil Pennock.
f3766eb5 2805
7d9f747b
PP
2806NM/20 Bugzilla 167: bool: condition support.
2807 Patch provided by Phil Pennock.
36f12725 2808
7d9f747b
PP
2809NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2810 clients. Patch provided by Phil Pennock.
e6060e2c 2811
7d9f747b
PP
2812NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2813 Patch provided by Brad "anomie" Jorsch.
5eb690a1 2814
7d9f747b
PP
2815NM/23 Bugzilla 687: Fix misparses in eximstats.
2816 Patch provided by Heiko Schlittermann.
d5c13d66 2817
7d9f747b
PP
2818NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2819 Patch provided by Heiko Schlittermann.
b2335c0b 2820
7d9f747b 2821NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1da77999 2822 plus update to original patch.
f4cd9433 2823
7d9f747b 2824NM/26 Bugzilla 799: Documentation correction for ratelimit.
dc988b7e 2825
7d9f747b
PP
2826NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2827 Patch provided by David Brownlee.
8dc71ab3 2828
7d9f747b 2829NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
400eda43 2830
7d9f747b 2831NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
ec5a421b 2832
7d9f747b 2833NM/30 Bugzilla 888: TLS documentation bugfixes.
07af267e 2834
7d9f747b 2835NM/31 Bugzilla 896: Dovecot buffer overrun fix.
51473862 2836
17792b53 2837NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
7d9f747b 2838 Unlike the original bugzilla I have changed all shell scripts in src tree.
17792b53 2839
7d9f747b
PP
2840NM/33 Bugzilla 898: Transport filter timeout fix.
2841 Patch by Todd Rinaldo.
52383f8f 2842
91576cec 2843NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
7d9f747b 2844 Patch by Serge Demonchaux.
5ca6d115 2845
7d9f747b
PP
2846NM/35 Bugzilla 39: Base64 decode bug fixes.
2847 Patch by Jakob Hirsch.
baee9eee 2848
7d9f747b 2849NM/36 Bugzilla 909: Correct connect() call in dcc code.
e93a964c 2850
7d9f747b 2851NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
9bf3d68f 2852
7d9f747b 2853NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
96535b98 2854
7d9f747b 2855NM/39 Bugzilla 911: Fixed MakeLinks build script.
30339e0f 2856
deafd5b3 2857
47db1125
NM
2858Exim version 4.69
2859-----------------
2860
4b3504d0
TK
2861TK/01 Add preliminary DKIM support. Currently requires a forked version of
2862 ALT-N's libdkim that I have put here:
2863 http://duncanthrax.net/exim-experimental/
2864
2865 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2866 were called 'true' and it seems that C99 defines that as a reserved
2867 keyword to be used with 'bool' variable types. That means you could
2868 not include C99-style headers which use bools without triggering
2869 build errors in sieve.c.
2870
81ea09ca
NM
2871NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2872 as mailq or other aliases. Changed the --help handling significantly
2873 to do whats expected. exim_usage() emits usage/help information.
2874
f13cddcb
SC
2875SC/01 Added the -bylocaldomain option to eximstats.
2876
7d9f747b 2877NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
8ad076b2 2878
7d9f747b 2879NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
a843aaa6 2880
7d9f747b 2881NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
47db1125
NM
2882
2883
eb4c0de6
PH
2884Exim version 4.68
2885-----------------
2886
2887PH/01 Another patch from the Sieve maintainer.
2888
6a3bceb1
PH
2889PH/02 When an IPv6 address is converted to a string for single-key lookup
2890 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2891 dots are used instead of colons so that keys in lsearch files need not
2892 contain colons. This was done some time before quoting was made available
2893 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2894 (notated using the quote facility) so as to distinguish them from IPv4
2895 keys. This meant that lookups for IP addresses in host lists did not work
2896 for iplsearch lookups.
2897
2898 This has been fixed by arranging for IPv6 addresses to be expressed with
2899 colons if the lookup type is iplsearch. This is not incompatible, because
2900 previously such lookups could never work.
2901
4c04137d 2902 The situation is now rather anomalous, since one *can* have colons in
6a3bceb1
PH
2903 ordinary lsearch keys. However, making the change in all cases is
2904 incompatible and would probably break a number of configurations.
2905
2e30fa9d
TK
2906TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2907 version.
2908
0806a9c5
MH
2909MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2910 conversion specification without a maximum field width, thereby enabling
2911 a rogue spamd server to cause a buffer overflow. While nobody in their
2912 right mind would setup Exim to query an untrusted spamd server, an
2913 attacker that gains access to a server running spamd could potentially
2914 exploit this vulnerability to run arbitrary code as the Exim user.
2915
ae276964
TK
2916TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2917 $primary_hostname instead of what libspf2 thinks the hosts name is.
2918
0f2cbd1b
MH
2919MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2920 a directory entry by the name of the lookup key. Previously, if a
2921 symlink pointed to a non-existing file or a file in a directory that
2922 Exim lacked permissions to read, a lookup for a key matching that
2923 symlink would fail. Now it is enough that a matching directory entry
2924 exists, symlink or not. (Bugzilla 503.)
2925
2b85bce7
PH
2926PH/03 The body_linecount and body_zerocount variables are now exported in the
2927 local_scan API.
2928
93655c46
PH
2929PH/04 Added the $dnslist_matched variable.
2930
6c512171
PH
2931PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2932 This means they are set thereafter only if the connection becomes
2933 encrypted.
2934
2935PH/06 Added the client_condition to authenticators so that some can be skipped
2936 by clients under certain conditions.
2937
aa6dc513
PH
2938PH/07 The error message for a badly-placed control=no_multiline_responses left
2939 "_responses" off the end of the name.
2940
a96603a0
PH
2941PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2942
8f240103
PH
2943PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2944 (without spaces) instead of just copying the configuration text.
2945
2946PH/10 Added the /noupdate option to the ratelimit ACL condition.
2947
d677b2f2
PH
2948PH/11 Added $max_received_linelength.
2949
d52120f2
PH
2950PH/12 Added +ignore_defer and +include_defer to host lists.
2951
64f2600a
PH
2952PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2953 way in which PCRE > 7.0 is built.
2954
8669f003
PH
2955PH/14 Implemented queue_only_load_latch.
2956
a4dc33a8
PH
2957PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2958 MAIL command. The effect was to mangle the value on 64-bit systems.
2959
d6a60c0f
PH
2960PH/16 Another patch from the Sieve maintainer.
2961
8f128379
PH
2962PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2963
8932dffe
PH
2964PH/18 If a system quota error occurred while trying to create the file for
2965 a maildir delivery, the message "Mailbox is full" was not appended to the
2966 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2967 only to a quota excession during the actual writing of the file.
d6a60c0f 2968
ddea74fa 2969PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
2970 characters?) which causes problems in log lines. The DN values are now
2971 passed through string_printing() before being added to log lines.
2972
ddea74fa 2973PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
2974 and InterBase are left for another time.)
2975
ddea74fa
PH
2976PH/21 Added message_body_newlines option.
2977
ce9f225c
PH
2978PH/22 Guard against possible overflow in moan_check_errorcopy().
2979
19897d52
PH
2980PH/23 POSIX allows open() to be a macro; guard against that.
2981
bc64a74d
PH
2982PH/24 If the recipient of an error message contained an @ in the local part
2983 (suitably quoted, of course), incorrect values were put in $domain and
2984 $local_part during the evaluation of errors_copy.
2985
eb4c0de6 2986
b4ed4da0
PH
2987Exim version 4.67
2988-----------------
2989
22ad45c9
MH
2990MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2991 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2992 Jan Srzednicki.
2993
b4ed4da0
PH
2994PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2995 issue a MAIL command.
2996
431b7361
PH
2997PH/02 In an ACL statement such as
2998
2999 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
3000
3001 if a client was not listed at all, or was listed with a value other than
3002 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
3003 the condition was not true (as it should be), so access was not denied.
3004 The bug was that the ! inversion was incorrectly passed on to the second
3005 item. This has been fixed.
3006
3007PH/03 Added additional dnslists conditions == and =& which are different from
3008 = and & when the dns lookup returns more than one IP address.
3009
83da1223
PH
3010PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
3011 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
3012
54fc8428
PH
3013PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
3014 FSYNC, which compiles an option called disable_fsync that allows for
3015 bypassing fsync(). The documentation is heavily laced with warnings.
3016
34c5e8dd
SC
3017SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
3018
bbe15da8
PH
3019PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
3020 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
3021 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
3022 including adding "make clean"; (3) Added -fPIC when compiling the test
3023 dynamically loaded module, to get rid of a warning.
3024
0e8a9471
MH
3025MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
3026 message fails, move_frozen_messages = true and ignore_bounce_errors_after
3027 = 0s. The bug is otherwise harmless.
3028
f0872424
PH
3029PH/07 There was a bug in the dovecot authenticator such that the value of
3030 $auth1 could be overwritten, and so not correctly preserved, after a
3031 successful authentication. This usually meant that the value preserved by
3032 the server_setid option was incorrect.
3033
b01dd148
PH
3034PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
3035
6bf342e1
PH
3036PH/09 Installed PCRE release 7.0.
3037
273f34d0
PH
3038PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
3039 run for batched SMTP input. It is now run at the start of every message
3040 in the batch. While fixing this I discovered that the process information
3041 (output by running exiwhat) was not always getting set for -bs and -bS
3042 input. This is fixed, and it now also says "batched" for BSMTP.
3043
cf8b11a5
PH
3044PH/11 Added control=no_pipelining.
3045
41c7c167
PH
3046PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
3047 patch, slightly modified), and move the expansion of helo_data till after
3048 the connection is made in the smtp transport (so it can use these
3049 values).
3050
9c57cbc0
PH
3051PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
3052
f3f065bb
PH
3053PH/14 Added log_selector = +pid.
3054
047bdd8c
PH
3055PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
3056
0ce9abe6
PH
3057PH/16 Add ${if forany and ${if forall.
3058
0e22dfd1
PH
3059PH/17 Added dsn_from option to vary the From: line in DSNs.
3060
4c590bd1
PH
3061PH/18 Flush SMTP output before performing a callout, unless control =
3062 no_callout_flush is set.
3063
09945f1e
PH
3064PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
3065 was true (the default) a successful delivery failed to delete the retry
3066 item, thus causing premature timeout of the address. The bug is now
3067 fixed.
3068
c51b8e75
PH
3069PH/20 Added hosts_avoid_pipelining to the smtp transport.
3070
e28326d8 3071PH/21 Long custom messages for fakedefer and fakereject are now split up
4c04137d 3072 into multiline responses in the same way that messages for "deny" and
e28326d8
PH
3073 other ACL rejections are.
3074
75b1493f
PH
3075PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
3076 with slight modification.
3077
7c5214ec
PH
3078PH/23 Applied sieve patches from the maintainer "tracking the latest notify
3079 draft, changing the syntax and factoring some duplicate code".
3080
4311097e
PH
3081PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
3082 for deliveries of the second and subsequent messages over the same SMTP
3083 connection.
3084
29f89cad
PH
3085PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
3086 ${reduce, with only minor "tidies".
3087
5e687460
SC
3088SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
3089
c3611384
PH
3090PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
3091 expansion side effects.
3092
5a11a7b4
PH
3093PH/27 When a message times out after an over-quota error from an Exim-imposed
3094 quota, the bounce message says "mailbox is full". This message was not
3095 being given when it was a system quota that was exceeded. It now should
3096 be the same.
3097
0e20aff9
MH
3098MH/03 Made $recipients available in local_scan(). local_scan() already has
3099 better access to the recipient list through recipients_list[], but
3100 $recipients can be useful in postmaster-provided expansion strings.
3101
ca86f471
PH
3102PH/28 The $smtp_command and $smtp_command_argument variables were not correct
3103 in the case of a MAIL command with additional options following the
3104 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
3105 were accidentally chopped off.
3106
a14e5636
PH
3107PH/29 SMTP synchronization checks are implemented when a command is read -
3108 there is a check that no more input is waiting when there shouldn't be
3109 any. However, for some commands, a delay in an ACL can mean that it is
3110 some time before the response is written. In this time, more input might
3111 arrive, invalidly. So now there are extra checks after an ACL has run for
3112 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
3113 pipelining has not been advertised.
3114
ec95d1a6
PH
3115PH/30 MH's patch to allow iscntrl() characters to be list separators.
3116
42855d71
PH
3117PH/31 Unlike :fail:, a custom message specified with :defer: was not being
3118 returned in the SMTP response when smtp_return_error_details was false.
3119 This has been fixed.
3120
57c2c631
PH
3121PH/32 Change the Dovecot authenticator to use read() and write() on the socket
3122 instead of the C I/O that was originally supplied, because problems were
3123 reported on Solaris.
3124
58c01c94
PH
3125PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
3126 Exim which did not show up earlier: it was assuming that a call to
3127 SSL_CTX_set_info_callback() might give an error value. In fact, there is
3128 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
3129 was a macro that became an assignment, so it seemed to work. This has
3130 changed to a proper function call with a void return, hence the compile
3131 error. Exim's code has been fixed.
3132
dee5a20a
PH
3133PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
3134 cpus.
3135
d2ee6114
PH
3136PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
3137
b2d5182b
PH
3138PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
3139
79749a79
PH
3140PH/37 If a message is not accepted after it has had an id assigned (e.g.
3141 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
3142 "Completed" line in the log. When some messages of this type were
3143 selected by exigrep, they were listed as "not completed". Others were
3144 picked up by some special patterns. I have improved the selection
3145 criteria to be more general.
79749a79 3146
c456d9bb
PH
3147PH/38 The host_find_failed option in the manualroute router can now be set
3148 to "ignore", to completely ignore a host whose IP address cannot be
3149 found. If all hosts are ignored, the behaviour is controlled by the new
3150 host_all_ignored option.
3151
cd9868ec
PH
3152PH/39 In a list of hosts for manualroute, if one item (either because of multi-
3153 homing or because of multiple MX records with /mx) generated more than
3154 one IP address, and the following item turned out to be the local host,
3155 all the secondary addresses of the first item were incorrectly removed
3156 from the list, along with the local host and any following hosts (which
3157 is what is supposed to happen).
3158
ebeaf996
PH
3159PH/40 When Exim receives a message, it writes the login name, uid, and gid of
3160 whoever called Exim into the -H file. In the case of the daemon it was
3161 behaving confusingly. When first started, it used values for whoever
3162 started the daemon, but after a SIGHUP it used the Exim user (because it
3163 calls itself on a restart). I have changed the code so that it now always
3164 uses the Exim user.
3165
2679d413
PH
3166PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
3167 message are rejected with the same error (e.g. no authentication or bad
3168 sender address), and a DATA command is nevertheless sent (as can happen
3169 with PIPELINING or a stupid MUA), the error message that was given to the
3170 RCPT commands is included in the rejection of the DATA command. This is
3171 intended to be helpful for MUAs that show only the final error to their
3172 users.
3173
84024b72
PH
3174PH/42 Another patch from the Sieve maintainer.
3175
8005d38e
SC
3176SC/02 Eximstats - Differentiate between permanent and temporary rejects.
3177 Eximstats - Fixed some broken HTML links and added missing column headers
3178 (Jez Hancock).
3179 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
3180 columns for Rejects, Temp Rejects, Ham, and Spam rows.
3181
3298c6c6
SC
3182SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
3183
a43a27c5
PH
3184PH/43 Yet another patch from the Sieve maintainer.
3185
58eb016e 3186PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
3187 the response to the final '.' that terminates a message, but only in the
3188 case where the client has not sent further data following the '.'
3189 (unfortunately, this is allowed). However, in many cases there won't be
3190 any further data because there won't be any more messages to send. A call
3191 to select() can be used: if it shows that the input is "ready", there is
3192 either input waiting, or the socket has been closed. An attempt to read
3193 the next input character can distinguish the two cases. Previously, Exim
58eb016e 3194 would have sent an OK response which the client would never have see.
563b63fa
PH
3195 This could lead to message repetition. This fix should cure that, at
3196 least in a lot of common cases.
58eb016e 3197
b43a74ea
PH
3198PH/45 Do not advertise STARTTLS in response to HELP unless it would be
3199 advertised in response to EHLO.
3200
b4ed4da0 3201
5dd1517f
PH
3202Exim version 4.66
3203-----------------
3204
3205PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
3206 fixed by 4.65/MH/01 (is this a record?) are fixed:
3207
3208 (i) An empty string was always treated as zero by the numeric comparison
3209 operators. This behaviour has been restored.
3210
3211 (ii) It is documented that the numeric comparison operators always treat
3212 their arguments as decimal numbers. This was broken in that numbers
3213 starting with 0 were being interpreted as octal.
3214
3215 While fixing these problems I realized that there was another issue that
3216 hadn't been noticed. Values of message_size_limit (both the global option
3217 and the transport option) were treated as octal if they started with 0.
3218 The documentation was vague. These values are now always treated as
3219 decimal, and I will make that clear in the documentation.
3220
3221
93cfa765
TK
3222Exim version 4.65
3223-----------------
3224
3225TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
3226 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
3227 versions. (#438)
3228
d6066548
MH
3229MH/01 Don't check that the operands of numeric comparison operators are
3230 integers when their expansion is in "skipping" mode (fixes bug