1 This document describes *changes* to previous versions, that might
2 affect Exim's operation, with an unchanged configuration file. For new
3 options, and new features, see the NewStuff file next to this ChangeLog.
9 JH/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.
13 JH/02 Early-pipelining support code is now included unless disabled in Makefile.
15 JH/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
19 JH/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.
23 JH/05 Regard command-line receipients as tainted.
25 JH/06 Bug 340: Remove the daemon pid file on exit, whe due to SIGTERM.
27 JH/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.
31 JH/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.
35 JH/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.
38 JH/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
42 JH/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.
48 JH/12 Fix an uninitialised flag in early-pipelining. Previously connections
49 could, depending on the platform, hang at the STARTTLS response.
51 JH/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.
56 JH/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.
61 JH/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.
69 JH/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.
73 JH/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.
77 JH/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.
80 WB/01 SPF: DNS lookups for the obsolete SPF RR type done by the libspf2 library
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.
83 Use of dnsdb lookups is not affected.
85 JH/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
90 JH/20 Taint checking: disallow use of tainted data for
91 - the appendfile transport file and directory options
92 - the pipe transport command
93 - the autoreply transport file, log and once options
94 - file names used by the redirect router (including filter files)
96 Previously this was permitted.
98 JH/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.
103 JH/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.
107 PP/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
112 JH/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
118 JH/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.
124 JH/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.
129 JH/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.
134 JH/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.
139 JH/28 Bug 2533: Fix expansion of ${tr } item. When called in some situations
140 it could crash from a null-deref. This could also affect the
141 ${addresses: } operator and ${readsock } item.
143 JH/29 Bug 2537: Fix $mime_part_count. When a single connection had a non-mime
144 message following a mime one, the variable was not reset.
146 JH/30 When an pipelined-connect fails at the first response, assume incorrect
147 cached capability (perhaps the peer reneged?) and immediately retry in
150 JH/31 Fix spurious detection of timeout while writing to transport filter.
156 JH/01 OpenSSL: With debug enabled output keying information sufficient, server
157 side, to decode a TLS 1.3 packet capture.
159 JH/02 OpenSSL: Suppress the sending of (stateful) TLS1.3 session tickets.
160 Previously the default library behaviour applied, sending two, each in
163 JH/03 Debug output for ACL now gives the config file name and line number for
166 JH/04 The default received_header_text now uses the RFC 8314 tls cipher clause.
168 JH/05 DKIM: ensure that dkim_domain elements are lowercased before use.
170 JH/06 Fix buggy handling of autoreply bounce_return_size_limit, and a possible
171 buffer overrun for (non-chunking) other transports.
173 JH/07 GnuTLS: Our use of late (post-handshake) certificate verification, under
174 TLS1.3, means that a server rejecting a client certificate is not visible
175 to the client until the first read of encrypted data (typically the
176 response to EHLO). Add detection for that case and treat it as a failed
177 TLS connection attempt, so that the normal retry-in-clear can work (if
178 suitably configured).
180 JB/01 Bug 2375: fix expansions of 822 addresses having comments in local-part
181 and/or domain. Found and fixed by Jason Betts.
183 JH/08 Add hardening against SRV & TLSA lookups the hit CNAMEs (a nonvalid
184 configuration). If a CNAME target was not a wellformed name pattern, a
187 JH/09 Logging: Fix initial listening-on line for multiple ports for an IP when
188 the OS reports them interleaved with other addresses.
190 JH/10 OpenSSL: Fix aggregation of messages. Previously, when PIPELINING was
191 used both for input and for a verify callout, both encrypted, SMTP
192 responses being sent by the server could be lost. This resulted in
193 dropped connections and sometimes bounces generated by a peer sending
196 JH/11 Harden plaintext authenticator against a badly misconfigured client-send
197 string. Previously it was possible to cause undefined behaviour in a
198 library routine (usually a crash). Found by "zerons".
200 JH/12 Bug 2384: fix "-bP smtp_receive_timeout". Previously it returned no
203 JH/13 Bug 2386: Fix builds with Dane under LibreSSL 2.9.0 onward. Some old
204 API was removed, so update to use the newer ones.
206 JH/14 Bug 1891: Close the log file if receiving a non-smtp message, without
207 any timeout set, is taking a long time. Previously we would hang on to a
208 rotated logfile "forever" if the input was arriving with long gaps
209 (a previous attempt to fix addressed lack, for a long time, of initial
212 HS/01 Bug 2390: Use message_id for tempfile creation to avoid races in a
213 shared (NFS) environment. The length of the tempfile name is now
214 4 + 16 ("hdr.$message_exim_id") which might break on file
215 systems which restrict the file name length to lower values.
218 HS/02 Bug 2390: Use message_id for tempfile creation to avoid races in a
219 shared (NFS) environment.
221 HS/03 Bug 2392: exigrep does case sensitive *option* processing (as it
222 did for all versions <4.90). Notably -M, -m, --invert, -I may be
225 JH/15 Use unsigned when creating bitmasks in macros, to avoid build errors
226 on some platforms for bit 31.
228 JH/16 GnuTLS: rework ciphersuite strings under recent library versions. Thanks
229 to changes apparently associated with TLS1.3 handling some of the APIs
230 previously used were either nonfunctional or inappropriate. Strings
231 like TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM__AEAD:256
232 and TLS1.2:ECDHE_SECP256R1__RSA_SHA256__AES_128_CBC__SHA256:128 replace
233 the previous TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256 .
234 This affects log line X= elements, the $tls_{in,out}_cipher variables,
235 and the use of specific cipher names in the encrypted= ACL condition.
237 JH/17 OpenSSL: the default openssl_options now disables ssl_v3.
239 JH/18 GnuTLS: fix $tls_out_ocsp under hosts_request_ocsp. Previously the
240 verification result was not updated unless hosts_require_ocsp applied.
242 JH/19 Bug 2398: fix listing of a named-queue. Previously, even with the option
243 queue_list_requires_admin set to false, non-admin users were denied the
246 JH/20 Bug 2389: fix server advertising of usable certificates, under GnuTLS in
247 directory-of-certs mode. Previously they were advertised despite the
250 JH/21 The smtp transport option "hosts_noproxy_tls" is now unset by default.
251 A single TCP connection by a client will now hold a TLS connection open
252 for multiple message deliveries, by default. Previoud the default was to
255 JH/22 The smtp transport option "hosts_try_dane" now enables all hosts by
256 default. If built with the facility, DANE will be used. The facility
257 SUPPORT_DANE is now enabled in the prototype build Makefile "EDITME".
259 JH/23 The build default is now for TLS to be included; the SUPPORT_TLS define
260 is replaced with DISABLE_TLS. Either USE_GNUTLS or (the new) USE_OPENSSL
261 must be defined and you must still, unless you define DISABLE_TLS, manage
262 the the include-dir and library-file requirements that go with that
263 choice. Non-TLS builds are still supported.
265 JH/24 Fix duplicated logging of peer name/address, on a transport connection-
268 JH/25 The smtp transport option "hosts_try_fastopen" now enables all hosts by
269 default. If the platform supports and has the facility enabled, it will
270 be requested on all coneections.
272 JH/26 The PIPE_CONNECT facility is promoted from experimental status and is now
273 controlled by the build-time option SUPPORT_PIPE_CONNECT.
275 PP/01 Unbreak heimdal_gssapi, broken in 4.92.
277 JH/27 Bug 2404: Use the main-section configuration option "dsn_from" for
278 success-DSN messages. Previously the From: header was always the default
279 one for these; the option was ignored.
281 JH/28 Fix the timeout on smtp response to apply to the whole response.
282 Previously it was reset for every read, so a teergrubing peer sending
283 single bytes within the time limit could extend the connection for a
284 long time. Credit to Qualsys Security Advisory Team for the discovery.
286 JH/29 Fix DSN Final-Recipient: field. Previously it was the post-routing
287 delivery address, which leaked information of the results of local
288 forwarding. Change to the original envelope recipient address, per
291 JH/30 Bug 2411: Fix DSN generation when RFC 3461 failure notification is
292 requested. Previously not bounce was generated and a log entry of
293 error ignored was made.
295 JH/31 Avoid re-expansion in ${sort } expansion. (CVE-2019-13917)
297 JH/32 Introduce a general tainting mechanism for values read from the input
298 channel, and values derived from them. Refuse to expand any tainted
299 values, to catch one form of exploit.
301 JH/33 Bug 2413: Fix dkim_strict option. Previously the expansion result
302 was unused and the unexpanded text used for the test. Found and
303 fixed by Ruben Jenster.
305 JH/34 Fix crash after TLS shutdown. When the TCP/SMTP channel was left open,
306 an attempt to use a TLS library read routine dereffed a nul pointer,
309 JH/35 Bug 2409: filter out-of-spec chars from callout response before using
310 them in our smtp response.
312 JH/36 Have the general router option retry_use_local_part default to true when
313 any of the restrictive preconditions are set (to anything). Previously it
314 was only for check_local user. The change removes one item of manual
315 configuration which is required for proper retries when a remote router
316 handles a subset of addresses for a domain.
318 JH/37 Appendfile: when evaluating quota use (non-quota_size_regex) take the file
319 link count into consideration.
321 HS/04 Fix handling of very log lines in -H files. If a -<key> <value> line
322 caused the extension of big_buffer, the following lines were ignored.
324 JH/38 Bug 1395: Teach the DNS negative-cache about TTL value from the SOA in
325 accordance with RFC 2308. Previously there was no expiry, so a longlived
326 receive process (eg. due to ACL delays) versus a short SOA value could
329 HS/05 Handle trailing backslash gracefully. (CVE-2019-15846)
331 JH/39 Promote DMARC support to mainline.
333 JH/40 Bug 2452: Add a References: header to DSNs.
335 JH/41 With GnuTLS 3.6.0 (and later) do not attempt to manage Diffie-Hellman
336 parameters. The relevant library call is documented as "Deprecated: This
337 function is unnecessary and discouraged on GnuTLS 3.6.0 or later. Since
338 3.6.0, DH parameters are negotiated following RFC7919."
340 HS/06 Change the default of dnssec_request_domains to "*"
342 JH/42 Bug 2545: Fix CHUNKING for all RCPT commands rejected. Previously we
343 carried on and emitted a BDAT command, even when PIPELINING was not
346 JH/43 Bug 2465: Fix taint-handling in dsearch lookup. Previously a nontainted
347 buffer was used for the filename, resulting in a trap when tainted
348 arguments (eg. $domain) were used.
350 JH/44 With OpenSSL 1.1.1 (onwards) disable renegotiation for TLS1.2 and below;
351 recommended to avoid a possible server-load attack. The feature can be
352 re-enabled via the openssl_options main cofiguration option.
354 JH/45 local_scan API: documented the current smtp_printf() call. This changed
355 for version 4.90 - adding a "more data" boolean to the arguments.
356 Bumped the ABI version number also, this having been missed previously;
357 release versions 4.90 to 4.92.3 inclusive were effectively broken in
358 respect of usage of smtp_printf() by either local_scan code or libraries
359 accessed via the ${dlfunc } expansion item. Both will need coding
360 adjustment for any calls to smtp_printf() to match the new function
361 signature; a FALSE value for the new argument is always safe.
363 JH/46 FreeBSD: fix use of the sendfile() syscall. The shim was not updating
364 the file-offset (which the Linux syscall does, and exim expects); this
365 resulted in an indefinite loop.
367 JH/47 ARC: fix crash in signing, triggered when a configuration error failed
368 to do ARC verification. The Authentication-Results: header line added
369 by the configuration then had no ARC item.
375 JH/01 Remove code calling the customisable local_scan function, unless a new
376 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
378 JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
379 non-signal-safe functions being used.
381 JH/03 Bug 2269: When presented with a received message having a stupidly large
382 number of DKIM-Signature headers, disable DKIM verification to avoid
383 a resource-consumption attack. The limit is set at twenty.
385 JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
386 report of oldest_pass in ${authres } in consequence, and separate out
387 some descriptions of reasons for verification fail.
389 JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
390 files in the spool were present and unlocked. A queue-runner could spot
391 them, resulting in a duplicate delivery. Fix that by doing the unlock
392 after the unlink. Investigation by Tim Stewart. Take the opportunity to
393 add more error-checking on spoolfile handling while that code is being
396 PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
397 No known attacks, no CVE, this is defensive hardening.
399 JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
400 a queue-runner could start a delivery while other operations were ongoing.
401 Cutthrough delivery was a common victim, resulting in duplicate delivery.
402 Found and investigated by Tim Stewart. Fix by using the open message data
403 file handle rather than opening another, and not locally closing it (which
404 releases a lock) for that case, while creating the temporary .eml format
405 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
407 JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
408 $sender_verify_failure/$recipient_verify_failure to "random".
410 JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
413 JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
414 Previously this would segfault.
416 JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
419 JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
420 like zero, since the resolver should be doing this for us, But we need one
421 as a CNAME but no MX presence gets the CNAME returned; we need to check
422 that doesn't point to an MX to declare it "no MX returned" rather than
423 "error, loop". A new main option is added so the older capability of
424 following some limited number of chain links is maintained.
426 JH/12 Add client-ip info to non-pass iprev ${authres } lines.
428 JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
429 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
430 now-deprecated earlier definitions used only specified the range up to TLS
431 1.2 (in the older-version library docs).
433 JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
435 JH/15 Rework TLS client-side context management. Stop using a global, and
436 explicitly pass a context around. This enables future use of TLS for
437 connections to service-daemons (eg. malware scanning) while a client smtp
438 connection is using TLS; with cutthrough connections this is quite likely.
440 JH/16 Fix ARC verification to do AS checks in reverse order.
442 JH/17 Support a "tls" option on the ${readsocket } expansion item.
444 JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
445 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
446 Previously the "utf8" would be re-prepended for every additional message.
448 JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
449 Previously thery were accepted, resulting in issues when attempting to
450 forward messages to a non-supporting MTA.
452 PP/02 Let -n work with printing macros too, not just options.
454 JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
455 one parent address was copied, and bogus data was used at delivery-logging
456 time. Either a crash (after delivery) or bogus log data could result.
457 Discovery and analysis by Tim Stewart.
459 PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
460 Previously if the string ended mid-character, we did not insert the
461 promised '?' replacement.
463 PP/04 Documentation: current string operators work on bytes, not codepoints.
465 JH/21 Change as many as possible of the global flags into one-bit bitfields; these
466 should pack well giving a smaller memory footprint so better caching and
467 therefore performance. Group the declarations where this can't be done so
468 that the byte-sized flag variables are not interspersed among pointer
469 variables, giving a better chance of good packing by the compiler.
471 JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
472 non-null, to avoid issues with sites running BATV. Previously reports were
473 sent with an empty envelope sender so looked like bounces.
475 JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
476 The ignore_error flag wasn't being returned from the filter subprocess so
477 was not set for later routers. Investigation and fix by Matthias Kurz.
479 JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
480 and a msg:complete for the whole, when a message is manually removed using
481 -Mrm. Developement by Matthias Kurz, hacked on by JH.
483 JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
484 a "Gnu special" function, asprintf() in the DB utility binary builds; I
485 hope that is portable enough.
487 JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
488 requiring a known-CA anchor certificate; make it now rely entirely on the
489 TLSA as an anchor. Checking the name on the leaf cert against the name
490 on the A-record for the host is still done for TA (but not for EE mode).
492 JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
493 included in delivery lines for non-proxied connections, when compiled with
494 SUPPORT_SOCKS and running with proxy logging enabled.
496 JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
497 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
498 move the existing event to fire before the normal logging of message
499 failure so that custom logging is bracketed by normal logging.
501 JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
502 msg:fail:internal event. Developement by Matthias Kurz.
504 JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
505 far too small for todays use of crypto signatures stored there. Go all
506 the way to the max DNS message size of 64kB, even though this might be
507 overmuch for IOT constrained device use.
509 JH/31 Fix a bad use of a copy function, which could be used to pointlessly
510 copy a string over itself. The library routine is documented as not
511 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
513 JH/32 For main options check_spool_space and check_inode_space, where the
514 platform supports 64b integers, support more than the previous 2^31 kB
515 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
516 the previous G, M, k.
518 JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
519 $authenticated_fail_id variable on authentication failure. Previously
522 JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
523 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
524 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
525 GNUTLS_SEC_PARAM_MEDIUM.
527 JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server
528 side. Previously we would continue as if no SNI had been received.
530 JH/36 Harden the handling of string-lists. When a list consisted of a sole
531 "<" character, which should be a list-separator specification, we walked
532 off past the nul-terimation.
534 JH/37 Bug 2341: Send "message delayed" warning MDNs (restricted to external
535 causes) even when the retry time is not yet met. Previously they were
536 not, meaning that when (say) an account was over-quota and temp-rejecting,
537 and multiple senders' messages were queued, only one sender would get
538 notified on each configured delay_warning cycle.
540 JH/38 Bug 2351: Log failures to extract envelope addresses from message headers.
542 JH/39 OpenSSL: clear the error stack after an SSL_accept(). With anon-auth
543 cipher-suites, an error can be left on the stack even for a succeeding
544 accept; this results in impossible error messages when a later operation
547 AM/01 Bug 2359: GnuTLS: repeat lowlevel read and write operations while they
548 return error codes indicating retry. Under TLS1.3 this becomes required.
550 JH/40 Fix the feature-cache refresh for EXPERIMENTAL_PIPE_CONNECT. Previously
551 it only wrote the new authenticators, resulting in a lack of tracking of
552 peer changes of ESMTP extensions until the next cache flush.
554 JH/41 Fix the loop reading a message header line to check for integer overflow,
555 and more-often against header_maxsize. Previously a crafted message could
556 induce a crash of the recive process; now the message is cleanly rejected.
558 JH/42 Bug 2366: Fix the behaviour of the dkim_verify_signers option. It had
559 been totally disabled for all of 4.91. Discovery and fix by "Mad Alex".
565 GF/01 DEFER rather than ERROR on redis cluster MOVED response.
566 When redis_servers is set to a list of > 1 element, and the Redis servers
567 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
568 case of MOVED into a DEFER case instead, thus moving the query onto the
569 next server in the list. For a cluster of N elements, all N servers must
570 be defined in redis_servers.
572 GF/02 Catch and remove uninitialized value warning in exiqsumm
573 Check for existence of @ARGV before looking at $ARGV[0]
575 JH/01 Replace the store_release() internal interface with store_newblock(),
576 which internalises the check required to safely use the old one, plus
577 the allocate and data copy operations duplicated in both (!) of the
578 extant use locations.
580 JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
581 modifier. This matches the restriction on the commandline.
583 JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
584 Previously only the last row was returned.
586 JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
587 we assumed that tags in the header were well-formed, and parsed the
588 element content after inspecting only the first char of the tag.
589 Assumptions at that stage could crash the receive process on malformed
592 JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
593 While running the DKIM ACL we operate on the Permanent memory pool so that
594 variables created with "set" persist to the DATA ACL. Also (at any time)
595 DNS lookups that fail create cache records using the Permanent pool. But
596 expansions release any allocations made on the current pool - so a dnsdb
597 lookup expansion done in the DKIM ACL releases the memory used for the
598 DNS negative-cache, and bad things result. Solution is to switch to the
599 Main pool for expansions.
600 While we're in that code, add checks on the DNS cache during store_reset,
601 active in the testsuite.
602 Problem spotted, and debugging aided, by Wolfgang Breyha.
604 JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
605 When none of the hosts presented to a transport match an already-open
606 connection, close it and proceed with the list. Previously we would
607 queue the message. Spotted by Lena with Yahoo, probably involving
610 JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
611 Previously a spurious "250 OK id=" response was appended to the proper
614 JH/08 The "support for" informational output now, which built with Content
615 Scanning support, has a line for the malware scanner interfaces compiled
616 in. Interface can be individually included or not at build time.
618 JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
619 by the template makefile "src/EDITME". The "STREAM" support for an older
620 ClamAV interface method is removed.
622 JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
623 rows affected is given instead).
625 JH/11 The runtime Berkeley DB library version is now additionally output by
626 "exim -d -bV". Previously only the compile-time version was shown.
628 JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
629 SMTP connection. Previously, when one had more receipients than the
630 first, an abortive onward connection was made. Move to full support for
631 multiple onward connections in sequence, handling cutthrough connection
632 for all multi-message initiating connections.
634 JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
635 routers. Previously, a multi-recipient message would fail to match the
636 onward-connection opened for the first recipient, and cause its closure.
638 JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
639 a timeout on read on a GnuTLS initiating connection, resulting in the
640 initiating connection being dropped. This mattered most when the callout
641 was marked defer_ok. Fix to keep the two timeout-detection methods
644 JH/15 Relax results from ACL control request to enable cutthrough, in
645 unsupported situations, from error to silently (except under debug)
646 ignoring. This covers use with PRDR, frozen messages, queue-only and
649 HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
651 JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
652 metadata, resulting in a crash in free().
654 PP/01 Fix broken Heimdal GSSAPI authenticator integration.
655 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
656 Broken also in d185889f4, with init system revamp.
658 JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
659 Previously we abruptly closed the connection after reading a malware-
660 found indication; now we go on to read the "scan ok" response line,
663 JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
664 ACL. Previously, a crash would result.
666 JH/19 Speed up macro lookups during configuration file read, by skipping non-
667 macro text after a replacement (previously it was only once per line) and
668 by skipping builtin macros when searching for an uppercase lead character.
670 JH/20 DANE support moved from Experimental to mainline. The Makefile control
671 for the build is renamed.
673 JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
674 was allocated for every new TLS startup, meaning one per message. Fix
675 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
677 JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
678 reported the original. Fix to report (as far as possible) the ACL
679 result replacing the original.
681 JH/23 Fix memory leak during multi-message connections using STARTTLS under
682 OpenSSL. Certificate information is loaded for every new TLS startup,
683 and the resources needed to be freed.
685 JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
687 JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
690 JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
691 DATA response info to the (existing) per-recipient response info for
692 the "C=" log element. It can have useful tracking info from the
693 destination system. Patch from Simon Arlott.
695 JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
696 length value. Previously this would segfault.
698 HS/02 Support Avast multiline protoocol, this allows passing flags to
699 newer versions of the scanner.
701 JH/28 Ensure that variables possibly set during message acceptance are marked
702 dead before release of memory in the daemon loop. This stops complaints
703 about them when the debug_store option is enabled. Discovered specifically
704 for sender_rate_period, but applies to a whole set of variables.
705 Do the same for the queue-runner and queue-list loops, for variables set
706 from spool message files. Do the same for the SMTP per-message loop, for
707 certain variables indirectly set in ACL operations.
709 JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
710 as a multi-recipient message from a mailinglist manager). The coding had
711 an arbitrary cutoff number of characters while checking for more input;
712 enforced by writing a NUL into the buffer. This corrupted long / fast
713 input. The problem was exposed more widely when more pipelineing of SMTP
714 responses was introduced, and one Exim system was feeding another.
715 The symptom is log complaints of SMTP syntax error (NUL chars) on the
716 receiving system, and refused recipients seen by the sending system
717 (propating to people being dropped from mailing lists).
718 Discovered and pinpointed by David Carter.
720 JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
721 replaced by the ${authresults } expansion.
723 JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
725 HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
726 allows proper process termination in container environments.
728 JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
729 Previously the "final dot" had a newline after it; ensure it is CR,LF.
731 JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
732 and "err_perm", deprecated since 4.83 when the RFC-defined words
733 "temperror" and "permerror" were introduced.
735 JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
736 transport-filters or DKIM-signing. The restriction was lost in the
737 consolidation of verify-callout and delivery SMTP handling.
738 Extend the restriction to also cover ARC-signing.
740 JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
741 in defer=pass mode supply a 450 to the initiator. Previously the message
744 PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
745 tls_require_ciphers is used as before.
747 HS/03 Malware Avast: Better match the Avast multiline protocol. Add
748 "pass_unscanned". Only tmpfails from the scanner are written to
749 the paniclog, as they may require admin intervention (permission
750 denied, license issues). Other scanner errors (like decompression
751 bombs) do not cause a paniclog entry.
753 JH/36 Fix reinitialisation of DKIM logging variable between messages.
754 Previously it was possible to log spurious information in receive log
757 JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
758 triggered odd behaviour from Outlook Express clients.
760 PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
763 JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
764 since the IETF WG has not yet settled on that versus the original
765 "bare" representation.
767 JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
768 Previously the millisecond value corrupted the output.
769 Fix also for syslog_pid=no and log_selector +pid, for which the pid
770 corrupted the output.
776 JH/01 Rework error string handling in TLS interface so that the caller in
777 more cases is responsible for logging. This permits library-sourced
778 string to be attached to addresses during delivery, and collapses
779 pairs of long lines into single ones.
781 PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
782 during configuration. Wildcards are allowed and expanded.
784 JH/02 Rework error string handling in DKIM to pass more info back to callers.
785 This permits better logging.
787 JH/03 Rework the transport continued-connection mechanism: when TLS is active,
788 do not close it down and have the child transport start it up again on
789 the passed-on TCP connection. Instead, proxy the child (and any
790 subsequent ones) for TLS via a unix-domain socket channel. Logging is
791 affected: the continued delivery log lines do not have any DNSSEC, TLS
792 Certificate or OCSP information. TLS cipher information is still logged.
794 JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
795 identical IP addresses on different listening ports. Will also affect
798 PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
799 add noisy ifdef guards to special-case this sillyness.
800 Patch from Bernd Kuhls.
802 JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
803 than 255 are no longer allowed.
805 JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
806 Disable the session-cache too, which might reduce our load. Since we
807 currrectly use a new context for every connection, both as server and
808 client, there is no benefit for these.
809 GnuTLS appears to not support tickets server-side by default (we don't
810 call gnutls_session_ticket_enable_server()) but client side is enabled
811 by default on recent versions (3.1.3 +) unless the PFS priority string
814 PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
815 <https://reproducible-builds.org/specs/source-date-epoch/>.
817 JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
818 the check for any unsuccessful recipients did not notice the limit, and
819 erroneously found still-pending ones.
821 JH/08 Pipeline CHUNKING command and data together, on kernels that support
822 MSG_MORE. Only in-clear (not on TLS connections).
824 JH/09 Avoid using a temporary file during transport using dkim. Unless a
825 transport-filter is involved we can buffer the headers in memory for
826 creating the signature, and read the spool data file once for the
827 signature and again for transmission.
829 JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
830 4.77 as the kernel support then wasn't solid, having issues in 64bit
831 mode. Now, it's been long enough. Add support for FreeBSD also.
833 JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
834 case where the routing stage had gathered several addresses to send to
835 a host before calling the transport for the first, we previously failed
836 to close down TLS in the old transport process before passing the TCP
837 connection to the new process. The new one sent a STARTTLS command
838 which naturally failed, giving a failed delivery and bloating the retry
839 database. Investigation and fix prototype from Wolfgang Breyha.
841 JH/12 Fix check on SMTP command input synchronisation. Previously there were
842 false-negatives in the check that the sender had not preempted a response
843 or prompt from Exim (running as a server), due to that code's lack of
844 awareness of the SMTP input buffering.
846 PP/04 Add commandline_checks_require_admin option.
847 Exim drops privileges sanely, various checks such as -be aren't a
848 security problem, as long as you trust local users with access to their
849 own account. When invoked by services which pass untrusted data to
850 Exim, this might be an issue. Set this option in main configuration
851 AND make fixes to the calling application, such as using `--` to stop
854 JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
855 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
856 responses to those, into a single TLS record each way (this usually means
857 a single packet). As a side issue, smtp_enforce_sync now works on TLS
860 PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
861 affects you only if you're dancing at the edge of the param size limits.
862 If you are, and this message makes sense to you, then: raise the
863 configured limit or use OpenSSL 1.1. Nothing we can do for older
866 JH/14 For the "sock" variant of the malware scanner interface, accept an empty
867 cmdline element to get the documented default one. Previously it was
870 JH/15 Fix a crash in the smtp transport caused when two hosts in succession
871 are unsuable for non-message-specific reasons - eg. connection timeout,
872 banner-time rejection.
874 JH/16 Fix logging of delivery remote port, when specified by router, under
877 PP/06 Repair manualroute's ability to take options in any order, even if one
878 is the name of a transport.
881 HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
883 JH/17 Change the list-building routines interface to use the expanding-string
884 triplet model, for better allocation and copying behaviour.
886 JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
887 Previously it was constructed the first time a possibly-matching string
888 was met in the configuration file input during startup; now it is done
891 JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
892 compatible one, to avoid the (poorly documented) possibility of a config
893 file in the working directory redirecting the DB files, possibly correpting
894 some existing file. CVE-2017-10140 assigned for BDB.
896 JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
897 cache-hot. Previously, although the result was properly cached, the
898 initial verify call returned a defer.
900 JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
901 the main verify for receipient in uncached-mode.
903 JH/22 Retire historical build files to an "unsupported" subdir. These are
904 defined as "ones for which we have no current evidence of testing".
906 JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
907 if present. Previously it was ignored.
909 JH/24 Start using specified-initialisers in C structure init coding. This is
910 a C99 feature (it's 2017, so now considered safe).
912 JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
913 if was a fixed-sized field and bitmask ops via macros; it is now more
916 PP/07 GitHub PR 56: Apply MariaDB build fix.
917 Patch provided by Jaroslav Škarvada.
919 PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
920 during Coverity cleanups [4.87 JH/47]
921 Diagnosis and fix provided by Michael Fischer v. Mollard.
923 JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
924 the right size to place the terminating semicolon on its own folded
925 line, the header hash was calculated to an incorrect value thanks to
926 the (relaxed) space the fold became.
928 HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
929 and confused the parent.
931 JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
932 which could crash as a result. This could lead to undeliverable messages.
934 JH/28 Logging: "next input sent too soon" now shows where input was truncated
937 JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
938 matters on fast-turnover and PID-randomising systems, which were getting
939 out-of-order delivery.
941 JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
942 a possibly-overlapping copy. The symptom was that "Remote host closed
943 connection in response to HELO" was logged instead of the actual 4xx
946 JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
947 Previously only that bufferd was discarded, resulting in SYMTP command
950 JH/32 DKIM: when a message has multiple signatures matching an identity given
951 in dkim_verify_signers, run the dkim acl once for each. Previously only
952 one run was done. Bug 2189.
954 JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
955 "panic the current process" to "deliberately defer". The panic log is
956 still written with the problem list name; the mail and reject logs now
957 get a temp-reject line for the message that was being handled, saying
958 something like "domains check lookup or other defer". The SMTP 451
959 message is still "Temporary local problem".
961 JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
962 A crafted sequence of BDAT commands could result in in-use memory beeing
963 freed. CVE-2017-16943.
965 HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
966 from SMTP input. Previously it was always done; now only done for DATA
967 and not BDAT commands. CVE-2017-16944.
969 JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
970 to the message (such as an overlong header line). Previously this was
971 not done and we did not exit BDAT mode. Followon from the previous item
972 though a different problem.
978 JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
979 than -2003 did; needs libidn2 in addition to libidn.
981 JH/02 The path option on a pipe transport is now expanded before use.
983 PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
984 Patch provided by "Björn", documentation fix added too.
986 JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
987 missing a wire-to-host endian conversion.
989 JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
990 close after a BDAT command line could be taken as a following command,
991 giving a synch failure. Fix by only checking for synch immediately
992 before acknowledging the chunk.
994 PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
995 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
996 macro. Patches provided by Josh Soref.
998 JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
999 Previously we did not; the RFC seems ambiguous and VRFY is not listed
1000 by IANA as a service extension. However, John Klensin suggests that we
1003 JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
1004 the dkim code may be unix-mode line endings rather than smtp wire-format
1005 CRLF, so prepend a CR to any bare LF.
1007 JH/07 Rationalise the coding for callout smtp conversations and transport ones.
1008 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
1010 JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
1011 the first were themselves being wrongly included in the feed into dkim
1012 processing; with most chunk sizes in use this resulted in an incorrect
1013 body hash calculated value.
1015 JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
1016 DKIM signature block, for verification. Although advised against by
1017 standards it is specifically not ruled illegal.
1019 JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
1021 JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
1022 missing a body hash (the bh= tag).
1024 JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
1025 It seems that HAProxy sends the Proxy Protocol information in clear and
1026 only then does a TLS startup, so do the same.
1028 JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
1029 TCP connections (such as for Spamd) unless the daemon successfully set
1030 Fast Open mode on its listening sockets. This fixes breakage seen on
1031 too-old kernels or those not configured for Fast Open, at the cost of
1032 requiring both directions being enabled for TFO, and TFO never being used
1033 by non-daemon-related Exim processes.
1035 JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
1036 endings, at least on the first header line. Try to canonify any that get
1037 past that check, despite the cost.
1039 JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
1040 now limited to an arbitrary five deep, while parsing addresses with the
1041 strip_excess_angle_brackets option enabled.
1043 PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
1044 instead leave the unprompted TLS handshake in socket buffer for the
1045 TLS library to consume.
1047 PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
1049 PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
1051 JH/16 Drop variables when they go out of scope. Memory management drops a whole
1052 region in one operation, for speed, and this leaves assigned pointers
1053 dangling. Add checks run only under the testsuite which checks all
1054 variables at a store-reset and panics on a dangling pointer; add code
1055 explicitly nulling out all the variables discovered. Fixes one known
1056 bug: a transport crash, where a dangling pointer for $sending_ip_address
1057 originally assigned in a verify callout, is re-used.
1059 PP/06 Drop '.' from @INC in various Perl scripts.
1061 PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
1063 PP/08 Reduce a number of compilation warnings under clang; building with
1064 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
1065 should be warning-free.
1067 JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
1069 HS/01 Fix portability problems introduced by PP/08 for platforms where
1070 realloc(NULL) is not equivalent to malloc() [SunOS et al].
1072 HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
1073 chunk. This allows us to accept broken chunked messages. We need a more
1074 general solution here.
1076 PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
1077 already-broken messages in the queue.
1079 JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
1081 JH/19 Fix reference counting bug in routing-generated-address tracking.
1087 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
1088 supports it and a size is available (ie. the sending peer gave us one).
1090 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
1091 years of being deprecated). The replacements are the ACLs
1092 acl_smtp_mime and acl_not_smtp_mime.
1094 JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
1095 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
1096 or even an in-clear connection were permitted. Now, if the host lookup
1097 was dnssec and dane was requested then the host is only used if the
1098 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
1099 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
1100 if one fails this test.
1101 This means that a poorly-configured remote DNS will make it incommunicado;
1102 but it protects against a DNS-interception attack on it.
1104 JH/04 Bug 1810: make continued-use of an open smtp transport connection
1105 non-noisy when a race steals the message being considered.
1107 JH/05 If main configuration option tls_certificate is unset, generate a
1108 self-signed certificate for inbound TLS connections.
1110 JH/06 Bug 165: hide more cases of password exposure - this time in expansions
1111 in rewrites and routers.
1113 JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
1114 and logged a warning sing 4.83; now they are a configuration file error.
1116 JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
1117 (lacking @domain). Apply the same qualification processing as RCPT.
1119 JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
1121 JH/10 Support ${sha256:} applied to a string (as well as the previous
1124 JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
1125 a cutthrough deliver is pending, as we always want to make a connection.
1126 This also avoids re-routing the message when later placing the cutthrough
1127 connection after a verify cache hit.
1128 Do not update it with the verify result either.
1130 JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
1131 when routing results in more than one destination address.
1133 JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
1134 signing (which inhibits the cutthrough capability). Previously only
1135 the presence of an option was tested; now an expansion evaluating as
1136 empty is permissible (obviously it should depend only on data available
1137 when the cutthrough connection is made).
1139 JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
1140 the relevant preceding SMTP command did not note the pipelining mode.
1142 JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
1143 Previously they were not counted.
1145 JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
1146 as one having no matching records. Previously we deferred the message
1147 that needed the lookup.
1149 JH/17 Fakereject: previously logged as a normal message arrival "<="; now
1150 distinguished as "(=".
1152 JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
1153 for missing MX records. Previously it only worked for missing A records.
1155 JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
1157 JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
1158 after the data-go-ahead and data-ack. Patch from Jason Betts.
1160 JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
1161 even for a "none" policy. Patch from Tony Meyer.
1163 JH/22 Fix continued use of a connection for further deliveries. If a port was
1164 specified by a router, it must also match for the delivery to be
1167 JH/23 Bug 1874: fix continued use of a connection for further deliveries.
1168 When one of the recipients of a message was unsuitable for the connection
1169 (has no matching addresses), we lost track of needing to mark it
1170 deferred. As a result mail would be lost.
1172 JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
1174 JH/25 Decoding ACL controls is now done using a binary search; the source code
1175 takes up less space and should be simpler to maintain. Merge the ACL
1176 condition decode tables also, with similar effect.
1178 JH/26 Fix problem with one_time used on a redirect router which returned the
1179 parent address unchanged. A retry would see the parent address marked as
1180 delivered, so not attempt the (identical) child. As a result mail would
1183 JH/27 Fix a possible security hole, wherein a process operating with the Exim
1184 UID can gain a root shell. Credit to http://www.halfdog.net/ for
1185 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
1188 JH/28 Enable {spool,log} filesystem space and inode checks as default.
1189 Main config options check_{log,spool}_{inodes,space} are now
1190 100 inodes, 10MB unless set otherwise in the configuration.
1192 JH/29 Fix the connection_reject log selector to apply to the connect ACL.
1193 Previously it only applied to the main-section connection policy
1196 JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
1198 PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
1199 by me. Added RFC7919 DH primes as an alternative.
1201 PP/02 Unbreak build via pkg-config with new hash support when crypto headers
1202 are not in the system include path.
1204 JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
1205 GnuTLS, when a session startup failed (eg because the client disconnected)
1206 Exim did stdio operations after fclose. This was exposed by a recent
1207 change which nulled out the file handle after the fclose.
1209 JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
1210 signed directly by the cert-signing cert, rather than an intermediate
1211 OCSP-signing cert. This is the model used by LetsEncrypt.
1213 JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
1215 HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
1216 an incoming connection.
1218 HS/02 Bug 1802: Do not half-close the connection after sending a request
1221 HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
1222 fallback to "prime256v1".
1224 JH/34 SECURITY: Use proper copy of DATA command in error message.
1225 Could leak key material. Remotely exploitable. CVE-2016-9963.
1231 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
1232 and 3.4.4 - once the server is enabled to respond to an OCSP request
1233 it does even when not requested, resulting in a stapling non-aware
1234 client dropping the TLS connection.
1236 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
1237 support variable-length bit vectors. No functional change.
1239 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
1240 The I= interface field on outgoing lines is now after the H= remote
1241 host field, same as incoming lines. There is a separate
1242 outgoing_interface log selector which allows you to disable the
1245 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
1246 If not running log_selector +smtp_connection the mainlog would be held
1247 open indefinitely after a "too many connections" event, including to a
1248 deleted file after a log rotate. Leave the per net connection logging
1249 leaving it open for efficiency as that will be quickly detected by the
1250 check on the next write.
1252 HS/01 Bug 1671: Fix post transport crash.
1253 Processing the wait-<transport> messages could crash the delivery
1254 process if the message IDs didn't exist for some reason. When
1255 using 'split_spool_directory=yes' the construction of the spool
1256 file name failed already, exposing the same netto behaviour.
1258 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
1259 mime_regex ACL conditions.
1261 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
1262 to DSN fail messages (bounces): remote IP, remote greeting, remote response
1263 to HELO, local diagnostic string.
1265 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
1266 log line to debug. Even when configured with a tls authenticator many
1267 client connections are expected to not authenticate in this way, so
1268 an authenticate fail is not an error.
1270 HS/02 Add the Exim version string to the process info. This way exiwhat
1271 gives some more detail about the running daemon.
1273 JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
1274 matter for fast-change records such as DNSBLs.
1276 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
1277 retry record, even if constant. There may be multiple transports with
1278 different interface settings and the retry behaviour needs to be kept
1281 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
1283 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
1285 JH/10 Bug 840: fix log_defer_output option of pipe transport
1287 JH/11 Bug 830: use same host for all RCPTS of a message, even under
1288 hosts_randomize. This matters a lot when combined with mua_wrapper.
1290 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
1291 ${quote_pgsql:<string>} operator.
1293 JH/13 Bug 1708: avoid misaligned access in cached lookup.
1295 JH/14 Change header file name for freeradius-client. Relevant if compiling
1296 with Radius support; from the Gentoo tree and checked under Fedora.
1298 JH/15 Bug 1712: Introduce $prdr_requested flag variable
1300 JH/16 Bug 1714: Permit an empty string as expansion result for transport
1301 option transport_filter, meaning no filtering.
1303 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
1305 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
1306 defaults to "*" (all hosts). The variable is now available when not built
1307 with TLS, default unset, mainly to enable keeping the testsuite sane.
1308 If a server certificate is not supplied (via tls_certificate) an error is
1309 logged, and clients will find TLS connections fail on startup. Presumably
1310 they will retry in-clear.
1311 Packagers of Exim are strongly encouraged to create a server certificate
1312 at installation time.
1314 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
1315 with the $config_file variable.
1317 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
1318 in transport context, after the attempt, and per-recipient. The latter type
1319 is per host attempted. The event data is the error message, and the errno
1320 information encodes the lookup type (A vs. MX) used for the (first) host,
1321 and the trailing two digits of the smtp 4xx response.
1323 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
1324 to write to mainlog (or rejectlog, paniclog) in the window between file
1325 creation and permissions/ownership being changed. Particularly affects
1326 installations where exicyclog is run as root, rather than exim user;
1327 result is that the running daemon panics and dies.
1329 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
1331 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
1332 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
1333 "pri" and "weight". Note that the previous implicit priority given by the
1334 list order is no longer honoured.
1336 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
1337 for DKIM processing.
1339 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
1340 by defining SUPPORT_SOCKS.
1342 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
1343 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
1344 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
1345 variables are renamed to proxy_{local,external}_{address,port}.
1347 JH/27 Move Internationalisation support from Experimental to mainline, enabled
1348 for a build by defining SUPPORT_I18N
1350 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
1351 of the query string, and make ${quote_redis:} do that quoting.
1353 JH/29 Move Events support from Experimental to mainline, enabled by default
1354 and removable for a build by defining DISABLE_EVENT.
1356 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
1358 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
1359 cached by the daemon.
1361 JH/32 Move Redis support from Experimental to mainline, enabled for a build
1362 by defining LOOKUP_REDIS. The libhiredis library is required.
1364 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
1365 keys are given for lookup.
1367 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
1368 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
1369 only supported when built with TLS support. The PolarSSL SHA routines
1370 are still used when the TLS library is too old for convenient support.
1372 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
1373 openssl_options), for security. OpenSSL forces this from version 1.1.0
1374 server-side so match that on older versions.
1376 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
1377 allocation for $value could be released as the expansion processing
1378 concluded, but leaving the global pointer active for it.
1380 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
1381 and to use the domains and local_parts ACL conditions.
1383 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
1384 incorrectly not doubled on cutthrough transmission, hence seen as a
1385 body-termination at the receiving system - resulting in truncated mails.
1386 Commonly the sender saw a TCP-level error, and retransmitted the message
1387 via the normal store-and-forward channel. This could result in duplicates
1388 received - but deduplicating mailstores were liable to retain only the
1389 initial truncated version.
1391 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
1393 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1395 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1396 we're in there, support oversigning also; bug 1309.
1398 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1400 HS/04 Add support for keep_environment and add_environment options.
1402 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1403 either intentional arithmetic overflow during PRNG, or testing config-
1406 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1407 delivery resulted in actual delivery. Cancel cutthrough before DATA
1410 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1411 rejects a recipient: pass the reject to the originator.
1413 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1414 Many were false-positives and ignorable, but it's worth fixing the
1417 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1418 for the new environment-manipulation done at startup. Move the routines
1419 from being local to tls.c to being global via the os.c file.
1421 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1422 an extract embedded as result-arg for a map, the first arg for extract
1423 is unavailable so we cannot tell if this is a numbered or keyed
1424 extraction. Accept either.
1430 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1433 JH/02 The smtp transport option "multi_domain" is now expanded.
1435 JH/03 The smtp transport now requests PRDR by default, if the server offers
1438 JH/04 Certificate name checking on server certificates, when exim is a client,
1439 is now done by default. The transport option tls_verify_cert_hostnames
1440 can be used to disable this per-host. The build option
1441 EXPERIMENTAL_CERTNAMES is withdrawn.
1443 JH/05 The value of the tls_verify_certificates smtp transport and main options
1444 default to the word "system" to access the system default CA bundle.
1445 For GnuTLS, only version 3.0.20 or later.
1447 JH/06 Verification of the server certificate for a TLS connection is now tried
1448 (but not required) by default. The verification status is now logged by
1449 default, for both outbound TLS and client-certificate supplying inbound
1452 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1455 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1456 Status Notification (bounce) messages are now MIME format per RFC 3464.
1457 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1458 under the control of the dsn_advertise_hosts option, and routers may
1459 have a dsn_lasthop option.
1461 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1462 default, modifiable by a malware= option. The list separator for
1463 the options can now be changed in the usual way. Bug 68.
1465 JH/10 The smtp_receive_timeout main option is now expanded before use.
1467 JH/11 The incoming_interface log option now also enables logging of the
1468 local interface on delivery outgoing connections.
1470 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1471 if the interface and destination host and port all match.
1473 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1476 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1477 Patch from Andrew Lewis.
1479 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
1480 now supports optional time-restrictions, weighting, and priority
1481 modifiers per server. Patch originally by <rommer@active.by>.
1483 JH/16 The spamd_address main option now supports a mixed list of local
1484 and remote servers. Remote servers can be IPv6 addresses, and
1485 specify a port-range.
1487 JH/17 Bug 68: The spamd_address main option now supports an optional
1488 timeout value per server.
1490 JH/18 Bug 1581: Router and transport options headers_add/remove can
1491 now have the list separator specified.
1493 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
1496 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
1499 JH/21 Support for the A6 type of dns record is withdrawn.
1501 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1502 rather than the verbs used.
1504 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1505 from 255 to 1024 chars.
1507 JH/24 Verification callouts now attempt to use TLS by default.
1509 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
1510 are generic router options now. The defaults didn't change.
1512 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1513 Original patch from Alexander Shikoff, worked over by JH.
1515 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1516 files if ZCAT_COMMAND is not executable.
1518 JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
1520 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1522 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1523 Normally benign, it bites when the pair was led to by a CNAME;
1524 modern usage is to not canonicalize the domain to a CNAME target
1525 (and we were inconsistent anyway for A-only vs AAAA+A).
1527 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1529 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1530 when evaluating $sender_host_dnssec.
1532 JH/31 Check the HELO verification lookup for DNSSEC, adding new
1533 $sender_helo_dnssec variable.
1535 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1537 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1539 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1541 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1542 documented as working, but never had. Support all but $spam_report.
1544 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1545 added for tls authenticator.
1547 HS/03 Add perl_taintmode main config option
1553 TL/01 When running the test suite, the README says that variables such as
1554 no_msglog_check are global and can be placed anywhere in a specific
1555 test's script, however it was observed that placement needed to be near
1556 the beginning for it to behave that way. Changed the runtest perl
1557 script to read through the entire script once to detect and set these
1558 variables, reset to the beginning of the script, and then run through
1559 the script parsing/test process like normal.
1561 TL/02 The BSD's have an arc4random API. One of the functions to induce
1562 adding randomness was arc4random_stir(), but it has been removed in
1563 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1564 function when detected.
1566 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1567 cause callback expansion.
1569 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1570 syntax errors in an expansion can be treated as a string instead of
1571 logging or causing an error, due to the internal use of bool_lax
1572 instead of bool when processing it.
1574 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
1575 server certificates when making smtp deliveries.
1577 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1579 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1581 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1583 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1584 Merged patch from Sebastian Wiedenroth.
1586 JH/05 Fix results-pipe from transport process. Several recipients, combined
1587 with certificate use, exposed issues where response data items split
1588 over buffer boundaries were not parsed properly. This eventually
1589 resulted in duplicates being sent. This issue only became common enough
1590 to notice due to the introduction of connection certificate information,
1591 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1593 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1594 size buffer was used, resulting in syntax errors when an expansion
1597 JH/07 Add support for directories of certificates when compiled with a GnuTLS
1598 version 3.3.6 or later.
1600 JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
1601 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1602 both become "event_action", the variables become $event_name, $event_data
1603 and $event_defer_errno. There is a new variable $verify_mode, usable in
1604 routers, transports and related events. The tls:cert event is now also
1605 raised for inbound connections, if the main configuration event_action
1608 TL/06 In test suite, disable OCSP for old versions of openssl which contained
1609 early OCSP support, but no stapling (appears to be less than 1.0.0).
1611 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1612 server certificate names available under the smtp transport option
1613 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1616 JH/10 Time-related extraction expansions from certificates now use the main
1617 option "timezone" setting for output formatting, and are consistent
1618 between OpenSSL and GnuTLS compilations. Bug 1541.
1620 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1621 encoded parameter in the incoming message. Bug 1558.
1623 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1624 include certificate info, eximon was claiming there were spoolfile
1627 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
1629 JH/14 Log delivery-related information more consistently, using the sequence
1630 "H=<name> [<ip>]" wherever possible.
1632 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1633 are problematic for Debian distribution, omit them from the release
1636 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1638 JH/16 Fix string representation of time values on 64bit time_t architectures.
1641 JH/17 Fix a null-indirection in certextract expansions when a nondefault
1642 output list separator was used.
1647 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1648 checkers that were complaining about end of non-void function with no
1651 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
1652 This was a regression introduced in 4.83 by another bugfix.
1654 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1656 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
1657 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
1663 TF/01 Correctly close the server side of TLS when forking for delivery.
1665 When a message was received over SMTP with TLS, Exim failed to clear up
1666 the incoming connection properly after forking off the child process to
1667 deliver the message. In some situations the subsequent outgoing
1668 delivery connection happened to have the same fd number as the incoming
1669 connection previously had. Exim would try to use TLS and fail, logging
1670 a "Bad file descriptor" error.
1672 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1673 utilities have not been installed.
1675 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1676 temporary space as the ACL may create new global variables.
1678 TL/01 LDAP support uses per connection or global context settings, depending
1679 upon the detected version of the libraries at build time.
1681 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1682 to extract and use the src ip:port in logging and expansions as if it
1683 were a direct connection from the outside internet. PPv2 support was
1684 updated based on HAProxy spec change in May 2014.
1686 JH/02 Add ${listextract {number}{list}{success}{fail}}.
1688 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1689 Properly escape header and check for NULL return.
1691 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1694 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1696 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1697 characters in header names, implemented as a verify condition.
1698 Contributed by Michael Fischer v. Mollard.
1700 TL/05 Rename SPF condition results err_perm and err_temp to standardized
1701 results permerror and temperror. Previous values are deprecated but
1702 still accepted. In a future release, err_perm and err_temp will be
1703 completely removed, which will be a backward incompatibility if the
1704 ACL tests for either of these two old results. Patch contributed by
1705 user bes-internal on the mailing list.
1707 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1709 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1710 selectors, in both main and reject logs.
1712 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1715 JH/07 Add malware type "sock" for talking to simple daemon.
1717 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
1719 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1720 routers/transports under cutthrough routing.
1722 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1723 numbers. Touch up "bool" conditional to keep the same definition.
1725 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1727 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1729 JH/12 Expand items in router/transport headers_add or headers_remove lists
1730 individually rather than the list as a whole. Bug 1452.
1732 Required for reasonable handling of multiple headers_ options when
1733 they may be empty; requires that headers_remove items with embedded
1734 colons must have them doubled (or the list-separator changed).
1736 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1737 view the policy declared in the DMARC record. Currently, $dmarc_status
1738 is a combined value of both the record presence and the result of the
1741 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1743 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
1744 dnslookup router and the smtp transport (applying to the forward
1747 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1748 of ldap servers used for a specific lookup. Patch provided by Heiko
1751 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
1752 New variable $lookup_dnssec_authenticated for observability.
1754 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1755 Patch submitted by Lars Timman.
1757 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1759 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1760 Requires trusted mode and valid format message id, aborts otherwise.
1761 Patch contributed by Heiko Schlichting.
1763 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1764 certextract with support for various fields. Bug 1358.
1766 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1767 is requested by default, modifiable by smtp transport option
1770 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
1771 operate on certificate variables to give certificate fingerprints
1772 Also new ${sha256:cert_variable}.
1774 JH/23 The PRDR feature is moved from being Experimental into the mainline.
1776 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1777 Christian Aistleitner.
1779 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1781 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1782 file. Patch from Wolfgang Breyha.
1784 JH/25 Expand the coverage of the delivery $host and $host_address to
1785 client authenticators run in verify callout. Bug 1476.
1787 JH/26 Port service names are now accepted for tls_on_connect_ports, to
1788 align with daemon_smtp_ports. Bug 72.
1790 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1791 support and error reporting did not work properly.
1793 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1794 and is readable. Patch from Andrew Colin Kissa.
1796 TL/14 Enhance documentation of ${run expansion and how it parses the
1797 commandline after expansion, particularly in the case when an
1798 unquoted variable expansion results in an empty value.
1800 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1802 PP/02 Fix internal collision of T_APL on systems which support RFC3123
1803 by renaming away from it. Addresses GH issue 15, reported by
1806 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1808 TL/15 SECURITY: prevent double expansion in math comparison functions
1809 (can expand unsanitized data). Not remotely exploitable.
1816 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1818 PP/02 Make -n do something, by making it not do something.
1819 When combined with -bP, the name of an option is not output.
1821 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1824 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1825 $sender_host_name and config options to manage this, and basic check
1828 PP/05 DSCP support for outbound connections and control modifier for inbound.
1830 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
1831 (Only plugin which currently uses this is kerberos4, which nobody should
1832 be using, but we should make it available and other future plugins might
1833 conceivably use it, even though it would break NAT; stuff *should* be
1834 using channel bindings instead).
1836 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
1837 name; added for Sendmail compatibility; requires admin caller.
1838 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1839 just ignore it); requires trusted caller.
1840 Also parse but ignore: -Ac -Am -X<logfile>
1843 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
1845 TL/02 Add +smtp_confirmation as a default logging option.
1847 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1848 Patch by Magnus Holmgren from 2007-02-20.
1850 TL/04 Bugzilla 1281 - Spec typo.
1851 Bugzilla 1283 - Spec typo.
1852 Bugzilla 1290 - Spec grammar fixes.
1854 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
1856 TL/06 Add Experimental DMARC support using libopendmarc libraries.
1858 TL/07 Fix an out of order global option causing a segfault. Reported to dev
1859 mailing list by by Dmitry Isaikin.
1861 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1863 JH/02 Support "G" suffix to numbers in ${if comparisons.
1865 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1867 NM/01 Bugzilla 1197 - Spec typo
1868 Bugzilla 1196 - Spec examples corrections
1870 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
1872 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1873 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1876 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1877 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1879 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1880 "acl {{name}{arg}...}", and optional args on acl condition
1883 JH/05 Permit multiple router/transport headers_add/remove lines.
1885 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1887 JH/07 Avoid using a waiting database for a single-message-only transport.
1888 Performance patch from Paul Fisher. Bugzilla 1262.
1890 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1893 JH/09 Add $headers_added variable, with content from use of ACL modifier
1894 add_header (but not yet added to the message). Bugzilla 199.
1896 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1897 Pulled from Bugzilla 817 by Wolfgang Breyha.
1899 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1901 (nb: this is the same fix as in Exim 4.80.1)
1903 JH/11 Add A= logging on delivery lines, and a client_set_id option on
1906 JH/12 Add optional authenticated_sender logging to A= and a log_selector
1909 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1911 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1912 advertise SMTP AUTH mechanism to us, instead of a generic
1913 protocol violation error. Also, make Exim more robust to bad
1914 data from the Dovecot auth socket.
1916 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1918 When a queue runner is handling a message, Exim first routes the
1919 recipient addresses, during which it prunes them based on the retry
1920 hints database. After that it attempts to deliver the message to
1921 any remaining recipients. It then updates the hints database using
1924 So if a recipient address works intermittently, it can get repeatedly
1925 deferred at routing time. The retry hints record remains fresh so the
1926 address never reaches the final cutoff time.
1928 This is a fairly common occurrence when a user is bumping up against
1929 their storage quota. Exim had some logic in its local delivery code
1930 to deal with this. However it did not apply to per-recipient defers
1931 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1933 This change adds a proper retry rule check during routing so that the
1934 final cutoff time is checked against the message's age. We only do
1935 this check if there is an address retry record and there is not a
1936 domain retry record; this implies that previous attempts to handle
1937 the address had the retry_use_local_parts option turned on. We use
1938 this as an approximation for the destination being like a local
1939 delivery, as in LMTP.
1941 I suspect this new check makes the old local delivery cutoff check
1942 redundant, but I have not verified this so I left the code in place.
1944 TF/02 Correct gecos expansion when From: is a prefix of the username.
1946 Test 0254 submits a message to Exim with the header
1950 When I ran the test suite under the user fanf2, Exim expanded
1951 the header to contain my full name, whereas it should have added
1952 a Resent-Sender: header. It erroneously treats any prefix of the
1953 username as equal to the username.
1955 This change corrects that bug.
1957 GF/01 DCC debug and logging tidyup
1958 Error conditions log to paniclog rather than rejectlog.
1959 Debug lines prefixed by "DCC: " to remove any ambiguity.
1961 TF/03 Avoid unnecessary rebuilds of lookup-related code.
1963 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1964 Bug spotted by Jeremy Harris; was flawed since initial commit.
1965 Would have resulted in OCSP responses post-SNI triggering an Exim
1966 NULL dereference and crash.
1968 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1970 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1971 Bug detection, analysis and fix by Samuel Thibault.
1972 Bugzilla 1331, Debian bug #698092.
1974 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1976 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1977 Server implementation by Todd Lyons, client by JH.
1978 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1979 config variable "prdr_enable" controls whether the server
1980 advertises the facility. If the client requests PRDR a new
1981 acl_data_smtp_prdr ACL is called once for each recipient, after
1982 the body content is received and before the acl_smtp_data ACL.
1983 The client is controlled by both of: a hosts_try_prdr option
1984 on the smtp transport, and the server advertisement.
1985 Default client logging of deliveries and rejections involving
1986 PRDR are flagged with the string "PRDR".
1988 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1989 fclose(). Diagnosis by Todd Lyons.
1991 PP/17 Update configure.default to handle IPv6 localhost better.
1992 Patch by Alain Williams (plus minor tweaks).
1995 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1996 This is now consistent with GnuTLS, and is now documented: the
1997 previous undocumented portable approach to treating the option as
1998 unset was to force an expansion failure. That still works, and
1999 an empty string is now equivalent.
2001 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
2002 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
2003 not performing validation itself.
2005 PP/20 Added force_command boolean option to pipe transport.
2006 Patch from Nick Koston, of cPanel Inc.
2008 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
2011 TF/04 Added udpsend ACL modifier and hexquote expansion operator
2013 PP/21 Fix eximon continuous updating with timestamped log-files.
2014 Broken in a format-string cleanup in 4.80, missed when I repaired the
2015 other false fix of the same issue.
2016 Report and fix from Heiko Schlichting.
2019 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
2020 Report from Prashanth Katuri.
2022 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
2023 It's SecureTransport, so affects any MacOS clients which use the
2024 system-integrated TLS libraries, including email clients.
2026 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
2027 using a MIME ACL for non-SMTP local injection.
2028 Report and assistance in diagnosis by Warren Baker.
2030 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
2032 JH/16 Fix comparisons for 64b. Bugzilla 1385.
2034 TL/09 Add expansion variable $authenticated_fail_id to keep track of
2035 last id that failed so it may be referenced in subsequent ACL's.
2037 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
2040 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
2041 ldap library initialization, allowing self-signed CA's to be
2042 used. Also properly sets require_cert option later in code by
2043 using NULL (global ldap config) instead of ldap handle (per
2044 session). Bug diagnosis and testing by alxgomz.
2046 TL/12 Enhanced documentation in the ratelimit.pl script provided in
2047 the src/util/ subdirectory.
2049 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
2050 renamed to Transport Post Delivery Action by Jeremy Harris, as
2053 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
2054 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
2055 redis_servers = needs to be configured which will be used by the redis
2056 lookup. Patch from Warren Baker, of The Packet Hub.
2058 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
2060 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
2061 hostname or reverse DNS when processing a host list. Used suggestions
2062 from multiple comments on this bug.
2064 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
2066 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
2067 Missed a few lines, added it to make the runtest require no keyboard
2070 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
2071 contains upper case chars. Make router use caseful_local_part.
2073 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
2074 support when GnuTLS has been built with p11-kit.
2080 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
2082 This, or similar/improved, will also be change PP/11 of 4.82.
2088 PP/01 Handle short writes when writing local log-files.
2089 In practice, only affects FreeBSD (8 onwards).
2090 Bugzilla 1053, with thanks to Dmitry Isaikin.
2092 NM/01 Bugzilla 949 - Documentation tweak
2094 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
2097 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
2099 PP/02 Implemented gsasl authenticator.
2101 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
2103 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
2104 `pkg-config foo` for cflags/libs.
2106 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
2107 with rest of GSASL and with heimdal_gssapi.
2109 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
2110 `pkg-config foo` for cflags/libs for the TLS implementation.
2112 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
2113 properties get this fed in as external SSF. A number of robustness
2114 and debugging improvements to the cyrus_sasl authenticator.
2116 PP/08 cyrus_sasl server now expands the server_realm option.
2118 PP/09 Bugzilla 1214 - Log authentication information in reject log.
2119 Patch by Jeremy Harris.
2121 PP/10 Added dbmjz lookup type.
2123 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
2125 PP/12 MAIL args handles TAB as well as SP, for better interop with
2126 non-compliant senders.
2127 Analysis and variant patch by Todd Lyons.
2129 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
2130 Bug report from Lars Müller <lars@samba.org> (via SUSE),
2131 Patch from Dirk Mueller <dmueller@suse.com>
2133 PP/13 tls_peerdn now print-escaped for spool files.
2134 Observed some $tls_peerdn in wild which contained \n, which resulted
2135 in spool file corruption.
2137 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
2138 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
2139 or write after TLS renegotiation, which otherwise led to messages
2142 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
2143 as a tracking header (ie: a signed header comes before the signature).
2144 Patch from Wolfgang Breyha.
2146 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
2147 comma-sep list; embedded commas doubled.
2149 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
2151 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
2153 Report and patch from Dmitry Banschikov.
2155 PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
2156 Removed SSL_clear() after SSL_new() which led to protocol negotiation
2157 failures. We appear to now support TLS1.1+ with Exim.
2159 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
2160 lets Exim select keys and certificates based upon TLS SNI from client.
2161 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
2162 before an outbound SMTP session. New log_selector, +tls_sni.
2164 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
2165 NULL dereference. Report and patch from Alun Jones.
2167 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
2168 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
2169 Not seeing resolver debug output on NetBSD, but suspect this is a
2170 resolver implementation change.
2172 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
2173 Left warnings. Added "eximon gdb" invocation mode.
2175 PP/21 Defaulting "accept_8bitmime" to true, not false.
2177 PP/22 Added -bw for inetd wait mode support.
2179 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
2180 locate the relevant includes and libraries. Made this the default.
2182 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
2183 Bugzilla 1246, report and most of solution from Tomasz Kusy.
2185 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
2186 This may cause build issues on older platforms.
2188 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
2189 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
2190 gnutls_require_mac & gnutls_require_protocols (no longer supported).
2191 Added SNI support via GnuTLS too.
2192 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
2194 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
2196 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
2197 Applied second patch from Janne, implementing suggestion to default
2198 multiple-strings-in-record handling to match SPF spec.
2200 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
2202 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
2203 read-only, out of scope).
2204 Patch from Wolfgang Breyha, report from Stuart Northfield.
2206 PP/29 Fix three issues highlighted by clang analyser static analysis.
2207 Only crash-plausible issue would require the Cambridge-specific
2208 iplookup router and a misconfiguration.
2209 Report from Marcin Mirosław.
2211 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
2213 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
2214 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
2215 As part of this, removing so much warning spew let me fix some minor
2216 real issues in debug logging.
2218 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
2219 assignment on my part. Fixed.
2221 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
2222 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
2223 Janne Snabb (who went above and beyond: thank you).
2225 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
2226 string otherwise requires a connection and a bunch more work and it's
2227 relatively easy to get wrong. Should also expose TLS library linkage
2230 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
2231 64-bit ${eval} (JH/03).
2233 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
2234 GNU libc to support some of the 64-bit stuff, should not lead to
2235 conflicts. Defined before os.h is pulled in, so if a given platform
2236 needs to override this, it can.
2238 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
2239 protection layer was required, which is not implemented.
2240 Bugzilla 1254, patch from Wolfgang Breyha.
2242 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
2243 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
2244 tls_dhparam take prime identifiers. Also unbreak combination of
2245 OpenSSL+DH_params+TLSSNI.
2247 PP/39 Disable SSLv2 by default in OpenSSL support.
2253 PP/01 Solaris build fix for Oracle's LDAP libraries.
2254 Bugzilla 1109, patch from Stephen Usher.
2256 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
2258 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
2261 TF/02 Fix a couple more cases where we did not log the error message
2262 when unlink() failed. See also change 4.74-TF/03.
2264 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
2265 lock up or crash if it happened to be inside a call to libc when it
2266 got a SIGUSR1 from exiwhat.
2268 The SIGUSR1 handler appends the current process status to the process
2269 log which is later printed by exiwhat. It used to use the general
2270 purpose logging code to do this, but several functions it calls are
2271 not safe for signals.
2273 The new output code in the SIGUSR1 handler is specific to the process
2274 log, and simple enough that it's easy to inspect for signal safety.
2275 Removing some special cases also simplifies the general logging code.
2276 Removing the spurious timestamps from the process log simplifies
2279 TF/04 Improved ratelimit ACL condition.
2281 The /noupdate option has been deprecated in favour of /readonly which
2282 has clearer semantics. The /leaky, /strict, and /readonly update modes
2283 are mutually exclusive. The update mode is no longer included in the
2284 database key; it just determines when the database is updated. (This
2285 means that when you upgrade Exim will forget old rate measurements.)
2287 Exim now checks that the per_* options are used with an update mode that
2288 makes sense for the current ACL. For example, when Exim is processing a
2289 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
2290 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
2291 must specify per_mail/readonly. If you omit the update mode it defaults to
2292 /leaky where that makes sense (as before) or /readonly where required.
2294 The /noupdate option is now undocumented but still supported for
2295 backwards compatibility. It is equivalent to /readonly except that in
2296 ACLs where /readonly is required you may specify /leaky/noupdate or
2297 /strict/noupdate which are treated the same as /readonly.
2299 A useful new feature is the /count= option. This is a generalization
2300 of the per_byte option, so that you can measure the throughput of other
2301 aggregate values. For example, the per_byte option is now equivalent
2302 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
2304 The per_rcpt option has been generalized using the /count= mechanism
2305 (though it's more complicated than the per_byte equivalence). When it is
2306 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
2307 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
2308 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
2309 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
2310 Note that using per_rcpt with a non-readonly update mode in more than
2311 one ACL will cause the recipients to be double-counted. (The per_mail
2312 and per_byte options don't have this problem.)
2314 The handling of very low rates has changed slightly. If the computed rate
2315 is less than the event's count (usually one) then this event is the first
2316 after a long gap. In this case the rate is set to the same as this event's
2317 count, so that the first message of a spam run is counted properly.
2319 The major new feature is a mechanism for counting the rate of unique
2320 events. The new per_addr option counts the number of different
2321 recipients that someone has sent messages to in the last time period. It
2322 behaves like per_rcpt if all the recipient addresses are different, but
2323 duplicate recipient addresses do not increase the measured rate. Like
2324 the /count= option this is a general mechanism, so the per_addr option
2325 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
2326 example, measure the rate that a client uses different sender addresses
2327 with the options per_mail/unique=$sender_address. There are further
2328 details in the main documentation.
2330 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
2332 TF/06 Removed a few PCRE remnants.
2334 TF/07 Automatically extract Exim's version number from tags in the git
2335 repository when doing development or release builds.
2337 PP/02 Raise smtp_cmd_buffer_size to 16kB.
2338 Bugzilla 879. Patch from Paul Fisher.
2340 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
2341 Heavily based on revision 40f9a89a from Simon Arlott's tree.
2344 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
2346 PP/05 Variable $av_failed, true if the AV scanner deferred.
2347 Bugzilla 1078. Patch from John Horne.
2349 PP/06 Stop make process more reliably on build failure.
2350 Bugzilla 1087. Patch from Heiko Schlittermann.
2352 PP/07 Make maildir_use_size_file an _expandable_ boolean.
2353 Bugzilla 1089. Patch from Heiko Schlittermann.
2355 PP/08 Handle ${run} returning more data than OS pipe buffer size.
2356 Bugzilla 1131. Patch from Holger Weiß.
2358 PP/09 Handle IPv6 addresses with SPF.
2359 Bugzilla 860. Patch from Wolfgang Breyha.
2361 PP/10 GnuTLS: support TLS 1.2 & 1.1.
2363 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
2366 PP/11 match_* no longer expand right-hand-side by default.
2367 New compile-time build option, EXPAND_LISTMATCH_RHS.
2368 New expansion conditions, "inlist", "inlisti".
2370 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
2372 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
2374 PP/14 fix log_write() format string regression from TF/03.
2375 Bugzilla 1152. Patch from Dmitry Isaikin.
2381 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
2383 PP/02 Harmonised TLS library version reporting; only show if debugging.
2384 Layout now matches that introduced for other libraries in 4.74 PP/03.
2386 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
2388 PP/04 New "dns_use_edns0" global option.
2390 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2393 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2394 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
2396 TK/01 Updated PolarSSL code to 0.14.2.
2397 Bugzilla 1097. Patch from Andreas Metzler.
2399 PP/07 Catch divide-by-zero in ${eval:...}.
2400 Fixes bugzilla 1102.
2402 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2405 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
2406 format-string attack -- SECURITY: remote arbitrary code execution.
2408 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2409 time unintentionally subject to list matching rules, letting the header
2410 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2411 arbitrary string expansion). This allowed for information disclosure.
2413 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2414 INT_MIN/-1 -- value coerced to INT_MAX.
2420 NM/01 Workaround for PCRE version dependency in version reporting
2423 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2424 This fixes portability to compilers other than gcc, notably
2425 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2427 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2428 makefiles for portability to HP-UX and POSIX correctness.
2430 PP/01 Permit LOOKUP_foo enabling on the make command-line.
2431 Also via indented variable definition in the Makefile.
2432 (Debugging by Oliver Heesakkers).
2434 PP/02 Restore caching of spamd results with expanded spamd_address.
2435 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2437 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2438 Improves build reliability. Fix from: Frank Elsner
2440 NM/02 Fix wide character breakage in the rfc2047 coding
2441 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2443 NM/03 Allow underscore in dnslist lookups
2444 Fixes bug 1026. Patch from Graeme Fowler
2446 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2447 Code patches from Adam Ciarcinski of NetBSD.
2449 NM/04 Fixed exiqgrep to cope with mailq missing size issue
2452 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2453 is logged, to avoid truncation. Patch from John Horne.
2455 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2456 Patch from Jakob Hirsch.
2458 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2459 SQL string expansion failure details.
2460 Patch from Andrey Oktyabrski.
2462 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2463 Patch from Simon Arlott.
2465 PP/09 New lookups functionality failed to compile on old gcc which rejects
2466 extern declarations in function scope.
2467 Patch from Oliver Fleischmann
2469 PP/10 Use sig_atomic_t for flags set from signal handlers.
2470 Check getgroups() return and improve debugging.
2471 Fixed developed for diagnosis in bug 927 (which turned out to be
2474 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2475 Patch from Mark Zealey.
2477 PP/12 Bugzilla 1056: Improved spamd server selection.
2478 Patch from Mark Zealey.
2480 PP/13 Bugzilla 1086: Deal with maildir quota file races.
2481 Based on patch from Heiko Schlittermann.
2483 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2484 Patch from Uwe Doering, sign-off by Michael Haardt.
2486 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2487 variable declaration deep within a block. Bug and patch from
2490 PP/15 lookups-Makefile IRIX compatibility coercion.
2492 PP/16 Make DISABLE_DKIM build knob functional.
2494 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2495 Patch by Simon Arlott
2497 TF/03 Fix valgrind.h portability to C89 compilers that do not support
2498 variable argument macros. Our copy now differs from upstream.
2504 TF/01 Failure to get a lock on a hints database can have serious
2505 consequences so log it to the panic log.
2507 TF/02 Log LMTP confirmation messages in the same way as SMTP,
2508 controlled using the smtp_confirmation log selector.
2510 TF/03 Include the error message when we fail to unlink a spool file.
2512 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2513 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2514 for maintaining out-of-tree patches for some time.
2516 PP/01 Bugzilla 139: Documentation and portability issues.
2517 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2518 Handle per-OS dynamic-module compilation flags.
2520 PP/02 Let /dev/null have normal permissions.
2521 The 4.73 fixes were a little too stringent and complained about the
2522 permissions on /dev/null. Exempt it from some checks.
2523 Reported by Andreas M. Kirchwitz.
2525 PP/03 Report version information for many libraries, including
2526 Exim version information for dynamically loaded libraries. Created
2527 version.h, now support a version extension string for distributors
2528 who patch heavily. Dynamic module ABI change.
2530 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2531 privilege escalation vulnerability whereby the Exim run-time user
2532 can cause root to append content of the attacker's choosing to
2535 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2538 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2539 If dropping privileges for untrusted macros, we disabled normal logging
2540 on the basis that it would fail; for the Exim run-time user, this is not
2541 the case, and it resulted in successful deliveries going unlogged.
2542 Fixed. Reported by Andreas Metzler.
2548 PP/01 Date: & Message-Id: revert to normally being appended to a message,
2549 only prepend for the Resent-* case. Fixes regression introduced in
2550 Exim 4.70 by NM/22 for Bugzilla 607.
2552 PP/02 Include check_rfc2047_length in configure.default because we're seeing
2553 increasing numbers of administrators be bitten by this.
2555 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2557 PP/03 Bugzilla 994: added openssl_options main configuration option.
2559 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2561 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
2563 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2565 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
2566 without a peer certificate, leading to a segfault because of an
2567 assumption that peers always have certificates. Be a little more
2568 paranoid. Problem reported by Martin Tscholak.
2570 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2571 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2572 NB: ClamAV planning to remove STREAM in "middle of 2010".
2573 CL also introduces -bmalware, various -d+acl logging additions and
2574 more caution in buffer sizes.
2576 PP/09 Implemented reverse_ip expansion operator.
2578 PP/10 Bugzilla 937: provide a "debug" ACL control.
2580 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2582 PP/12 Bugzilla 973: Implement --version.
2584 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2586 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2588 PP/15 Bugzilla 816: support multiple condition rules on Routers.
2590 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
2591 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2592 ignore trailing whitespace.
2594 JJ/02 prevent non-panic DKIM error from being sent to paniclog
2596 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2599 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2600 Notification from Dr Andrew Aitchison.
2602 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2603 ExtendedDetectionInfo response format.
2604 Notification from John Horne.
2606 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2609 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2610 XSL and documented dependency on system catalogs, with examples of how
2613 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2616 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2617 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2618 configuration file which is writeable by the Exim user or group.
2620 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2621 of configuration files to cover files specified with the -C option if
2622 they are going to be used with root privileges, not just the default
2625 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2626 option (effectively making it always true).
2628 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2629 files to be used while preserving root privileges.
2631 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2632 that rogue child processes cannot use them.
2634 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2635 run-time user, instead of root.
2637 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2638 Exim run-time user without dropping privileges.
2640 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2641 result string, instead of calling string_vformat() twice with the same
2644 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2645 for other users. Others should always drop root privileges if they use
2646 -C on the command line, even for a whitelisted configure file.
2648 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2650 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2656 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2657 $data_path, and $header_path variables; fixed documentation bugs and
2660 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2661 exipick to access non-standard spools, including the "frozen" queue
2664 NM/01 Bugzilla 965: Support mysql stored procedures.
2665 Patch from Alain Williams
2667 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2669 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2670 Patch from Andreas Metzler
2672 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2673 Patch from Kirill Miazine
2675 NM/05 Bugzilla 671: Added umask to procmail example.
2677 JJ/03 installed exipick 20100323.0, fixing doc bug
2679 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
2680 directory. Notification and patch from Dan Rosenberg.
2682 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2684 TK/02 Improve log output when DKIM signing operation fails.
2686 MH/01 Treat the transport option dkim_domain as a colon separated
2687 list, not as a single string, and sign the message with each element,
2688 omitting multiple occurences of the same signer.
2690 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2691 Bugzilla 985, 986. Patch by Simon Arlott
2693 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
2694 Patch by Simon Arlott
2696 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
2697 MBX locking. Notification from Dan Rosenberg.
2703 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
2705 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2707 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2709 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2711 NM/04 Bugzilla 915: Flag broken perl installation during build.
2717 TK/01 Added patch by Johannes Berg that expands the main option
2718 "spamd_address" if it starts with a dollar sign.
2720 TK/02 Write list of recipients to X-Envelope-Sender header when building
2721 the mbox-format spool file for content scanning (suggested by Jakob
2724 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2725 (http://www.dcc-servers.net/) support via dccifd. Activated by
2726 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
2728 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2729 by Mark Daniel Reidel <mr@df.eu>.
2731 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2732 When building exim an external PCRE library is now needed -
2733 PCRE is a system library on the majority of modern systems.
2734 See entry on PCRE_LIBS in EDITME file.
2736 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2737 conversation. Added nologin parameter to request.
2738 Patch contributed by Kirill Miazine.
2740 TF/01 Do not log submission mode rewrites if they do not change the address.
2742 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2744 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
2745 log files in place. Contributed by Roberto Lima.
2747 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
2749 TF/03 Bugzilla 615: When checking the local_parts router precondition
2750 after a local_part_suffix or local_part_prefix option, Exim now
2751 does not use the address's named list lookup cache, since this
2752 contains cached lookups for the whole local part.
2754 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
2755 Robert Millan. Documentation is in experimental-spec.txt.
2757 TF/04 Bugzilla 668: Fix parallel build (make -j).
2759 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
2761 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
2762 Patch provided by Jan Srzednicki.
2764 TF/05 Leading white space used to be stripped from $spam_report which
2765 wrecked the formatting. Now it is preserved.
2767 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2768 that they are available at delivery time.
2770 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2772 TF/08 TLS error reporting now respects the incoming_interface and
2773 incoming_port log selectors.
2775 TF/09 Produce a more useful error message if an SMTP transport's hosts
2776 setting expands to an empty string.
2778 NM/06 Bugzilla 744: EXPN did not work under TLS.
2779 Patch provided by Phil Pennock.
2781 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
2782 Patch provided by Richard Godbee.
2784 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
2785 acl_smtp_notquit, added index entry.
2787 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2788 Patch provided by Eugene Bujak.
2790 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2791 accept(). Patch provided by Maxim Dounin.
2793 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
2794 Patch provided by Phil Pennock.
2796 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2798 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
2799 Patch provided by Brad "anomie" Jorsch.
2801 NM/14 Bugzilla 622: Added timeout setting to transport filter.
2802 Patch provided by Dean Brooks.
2804 TK/05 Add native DKIM support (does not depend on external libraries).
2806 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
2807 Patch provided by Graeme Fowler.
2809 NM/16 Bugzilla 851: Documentation example syntax fix.
2811 NM/17 Changed NOTICE file to remove references to embedded PCRE.
2813 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2816 NM/19 Bugzilla 745: TLS version reporting.
2817 Patch provided by Phil Pennock.
2819 NM/20 Bugzilla 167: bool: condition support.
2820 Patch provided by Phil Pennock.
2822 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2823 clients. Patch provided by Phil Pennock.
2825 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2826 Patch provided by Brad "anomie" Jorsch.
2828 NM/23 Bugzilla 687: Fix misparses in eximstats.
2829 Patch provided by Heiko Schlittermann.
2831 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2832 Patch provided by Heiko Schlittermann.
2834 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
2835 plus update to original patch.
2837 NM/26 Bugzilla 799: Documentation correction for ratelimit.
2839 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2840 Patch provided by David Brownlee.
2842 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
2844 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
2846 NM/30 Bugzilla 888: TLS documentation bugfixes.
2848 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
2850 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
2851 Unlike the original bugzilla I have changed all shell scripts in src tree.
2853 NM/33 Bugzilla 898: Transport filter timeout fix.
2854 Patch by Todd Rinaldo.
2856 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
2857 Patch by Serge Demonchaux.
2859 NM/35 Bugzilla 39: Base64 decode bug fixes.
2860 Patch by Jakob Hirsch.
2862 NM/36 Bugzilla 909: Correct connect() call in dcc code.
2864 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
2866 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
2868 NM/39 Bugzilla 911: Fixed MakeLinks build script.
2874 TK/01 Add preliminary DKIM support. Currently requires a forked version of
2875 ALT-N's libdkim that I have put here:
2876 http://duncanthrax.net/exim-experimental/
2878 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2879 were called 'true' and it seems that C99 defines that as a reserved
2880 keyword to be used with 'bool' variable types. That means you could
2881 not include C99-style headers which use bools without triggering
2882 build errors in sieve.c.
2884 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2885 as mailq or other aliases. Changed the --help handling significantly
2886 to do whats expected. exim_usage() emits usage/help information.
2888 SC/01 Added the -bylocaldomain option to eximstats.
2890 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
2892 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
2894 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
2900 PH/01 Another patch from the Sieve maintainer.
2902 PH/02 When an IPv6 address is converted to a string for single-key lookup
2903 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2904 dots are used instead of colons so that keys in lsearch files need not
2905 contain colons. This was done some time before quoting was made available
2906 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2907 (notated using the quote facility) so as to distinguish them from IPv4
2908 keys. This meant that lookups for IP addresses in host lists did not work
2909 for iplsearch lookups.
2911 This has been fixed by arranging for IPv6 addresses to be expressed with
2912 colons if the lookup type is iplsearch. This is not incompatible, because
2913 previously such lookups could never work.
2915 The situation is now rather anomalous, since one *can* have colons in
2916 ordinary lsearch keys. However, making the change in all cases is
2917 incompatible and would probably break a number of configurations.
2919 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2922 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2923 conversion specification without a maximum field width, thereby enabling
2924 a rogue spamd server to cause a buffer overflow. While nobody in their
2925 right mind would setup Exim to query an untrusted spamd server, an
2926 attacker that gains access to a server running spamd could potentially
2927 exploit this vulnerability to run arbitrary code as the Exim user.
2929 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2930 $primary_hostname instead of what libspf2 thinks the hosts name is.
2932 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2933 a directory entry by the name of the lookup key. Previously, if a
2934 symlink pointed to a non-existing file or a file in a directory that
2935 Exim lacked permissions to read, a lookup for a key matching that
2936 symlink would fail. Now it is enough that a matching directory entry
2937 exists, symlink or not. (Bugzilla 503.)
2939 PH/03 The body_linecount and body_zerocount variables are now exported in the
2942 PH/04 Added the $dnslist_matched variable.
2944 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2945 This means they are set thereafter only if the connection becomes
2948 PH/06 Added the client_condition to authenticators so that some can be skipped
2949 by clients under certain conditions.
2951 PH/07 The error message for a badly-placed control=no_multiline_responses left
2952 "_responses" off the end of the name.
2954 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2956 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2957 (without spaces) instead of just copying the configuration text.
2959 PH/10 Added the /noupdate option to the ratelimit ACL condition.
2961 PH/11 Added $max_received_linelength.
2963 PH/12 Added +ignore_defer and +include_defer to host lists.
2965 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2966 way in which PCRE > 7.0 is built.
2968 PH/14 Implemented queue_only_load_latch.
2970 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2971 MAIL command. The effect was to mangle the value on 64-bit systems.
2973 PH/16 Another patch from the Sieve maintainer.
2975 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2977 PH/18 If a system quota error occurred while trying to create the file for
2978 a maildir delivery, the message "Mailbox is full" was not appended to the
2979 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2980 only to a quota excession during the actual writing of the file.
2982 PH/19 It seems that peer DN values may contain newlines (and other non-printing
2983 characters?) which causes problems in log lines. The DN values are now
2984 passed through string_printing() before being added to log lines.
2986 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
2987 and InterBase are left for another time.)
2989 PH/21 Added message_body_newlines option.
2991 PH/22 Guard against possible overflow in moan_check_errorcopy().
2993 PH/23 POSIX allows open() to be a macro; guard against that.
2995 PH/24 If the recipient of an error message contained an @ in the local part
2996 (suitably quoted, of course), incorrect values were put in $domain and
2997 $local_part during the evaluation of errors_copy.
3003 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
3004 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
3007 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
3008 issue a MAIL command.
3010 PH/02 In an ACL statement such as
3012 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
3014 if a client was not listed at all, or was listed with a value other than
3015 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
3016 the condition was not true (as it should be), so access was not denied.
3017 The bug was that the ! inversion was incorrectly passed on to the second
3018 item. This has been fixed.
3020 PH/03 Added additional dnslists conditions == and =& which are different from
3021 = and & when the dns lookup returns more than one IP address.
3023 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
3024 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
3026 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
3027 FSYNC, which compiles an option called disable_fsync that allows for
3028 bypassing fsync(). The documentation is heavily laced with warnings.
3030 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
3032 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
3033 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
3034 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
3035 including adding "make clean"; (3) Added -fPIC when compiling the test
3036 dynamically loaded module, to get rid of a warning.
3038 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
3039 message fails, move_frozen_messages = true and ignore_bounce_errors_after
3040 = 0s. The bug is otherwise harmless.
3042 PH/07 There was a bug in the dovecot authenticator such that the value of
3043 $auth1 could be overwritten, and so not correctly preserved, after a
3044 successful authentication. This usually meant that the value preserved by
3045 the server_setid option was incorrect.
3047 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
3049 PH/09 Installed PCRE release 7.0.
3051 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
3052 run for batched SMTP input. It is now run at the start of every message
3053 in the batch. While fixing this I discovered that the process information
3054 (output by running exiwhat) was not always getting set for -bs and -bS
3055 input. This is fixed, and it now also says "batched" for BSMTP.
3057 PH/11 Added control=no_pipelining.
3059 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
3060 patch, slightly modified), and move the expansion of helo_data till after
3061 the connection is made in the smtp transport (so it can use these
3064 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
3066 PH/14 Added log_selector = +pid.
3068 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
3070 PH/16 Add ${if forany and ${if forall.
3072 PH/17 Added dsn_from option to vary the From: line in DSNs.
3074 PH/18 Flush SMTP output before performing a callout, unless control =
3075 no_callout_flush is set.
3077 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
3078 was true (the default) a successful delivery failed to delete the retry
3079 item, thus causing premature timeout of the address. The bug is now
3082 PH/20 Added hosts_avoid_pipelining to the smtp transport.
3084 PH/21 Long custom messages for fakedefer and fakereject are now split up
3085 into multiline responses in the same way that messages for "deny" and
3086 other ACL rejections are.
3088 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
3089 with slight modification.
3091 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
3092 draft, changing the syntax and factoring some duplicate code".
3094 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
3095 for deliveries of the second and subsequent messages over the same SMTP
3098 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
3099 ${reduce, with only minor "tidies".
3101 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
3103 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
3104 expansion side effects.
3106 PH/27 When a message times out after an over-quota error from an Exim-imposed
3107 quota, the bounce message says "mailbox is full". This message was not
3108 being given when it was a system quota that was exceeded. It now should
3111 MH/03 Made $recipients available in local_scan(). local_scan() already has
3112 better access to the recipient list through recipients_list[], but
3113 $recipients can be useful in postmaster-provided expansion strings.
3115 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
3116 in the case of a MAIL command with additional options following the
3117 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
3118 were accidentally chopped off.
3120 PH/29 SMTP synchronization checks are implemented when a command is read -
3121 there is a check that no more input is waiting when there shouldn't be
3122 any. However, for some commands, a delay in an ACL can mean that it is
3123 some time before the response is written. In this time, more input might
3124 arrive, invalidly. So now there are extra checks after an ACL has run for
3125 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
3126 pipelining has not been advertised.
3128 PH/30 MH's patch to allow iscntrl() characters to be list separators.
3130 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
3131 returned in the SMTP response when smtp_return_error_details was false.
3132 This has been fixed.
3134 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
3135 instead of the C I/O that was originally supplied, because problems were
3136 reported on Solaris.
3138 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
3139 Exim which did not show up earlier: it was assuming that a call to
3140 SSL_CTX_set_info_callback() might give an error value. In fact, there is
3141 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
3142 was a macro that became an assignment, so it seemed to work. This has
3143 changed to a proper function call with a void return, hence the compile
3144 error. Exim's code has been fixed.
3146 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
3149 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
3151 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
3153 PH/37 If a message is not accepted after it has had an id assigned (e.g.
3154 because it turns out to be too big or there is a timeout) there is no
3155 "Completed" line in the log. When some messages of this type were
3156 selected by exigrep, they were listed as "not completed". Others were
3157 picked up by some special patterns. I have improved the selection
3158 criteria to be more general.
3160 PH/38 The host_find_failed option in the manualroute router can now be set
3161 to "ignore", to completely ignore a host whose IP address cannot be
3162 found. If all hosts are ignored, the behaviour is controlled by the new
3163 host_all_ignored option.
3165 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
3166 homing or because of multiple MX records with /mx) generated more than
3167 one IP address, and the following item turned out to be the local host,
3168 all the secondary addresses of the first item were incorrectly removed
3169 from the list, along with the local host and any following hosts (which
3170 is what is supposed to happen).
3172 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
3173 whoever called Exim into the -H file. In the case of the daemon it was
3174 behaving confusingly. When first started, it used values for whoever
3175 started the daemon, but after a SIGHUP it used the Exim user (because it
3176 calls itself on a restart). I have changed the code so that it now always
3179 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
3180 message are rejected with the same error (e.g. no authentication or bad
3181 sender address), and a DATA command is nevertheless sent (as can happen
3182 with PIPELINING or a stupid MUA), the error message that was given to the
3183 RCPT commands is included in the rejection of the DATA command. This is
3184 intended to be helpful for MUAs that show only the final error to their
3187 PH/42 Another patch from the Sieve maintainer.
3189 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
3190 Eximstats - Fixed some broken HTML links and added missing column headers
3192 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
3193 columns for Rejects, Temp Rejects, Ham, and Spam rows.
3195 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
3197 PH/43 Yet another patch from the Sieve maintainer.
3199 PH/44 I found a way to check for a TCP/IP connection going away before sending
3200 the response to the final '.' that terminates a message, but only in the
3201 case where the client has not sent further data following the '.'
3202 (unfortunately, this is allowed). However, in many cases there won't be
3203 any further data because there won't be any more messages to send. A call
3204 to select() can be used: if it shows that the input is "ready", there is
3205 either input waiting, or the socket has been closed. An attempt to read
3206 the next input character can distinguish the two cases. Previously, Exim
3207 would have sent an OK response which the client would never have see.
3208 This could lead to message repetition. This fix should cure that, at
3209 least in a lot of common cases.
3211 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
3212 advertised in response to EHLO.
3218 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
3219 fixed by 4.65/MH/01 (is this a record?) are fixed:
3221 (i) An empty string was always treated as zero by the numeric comparison
3222 operators. This behaviour has been restored.
3224 (ii) It is documented that the numeric comparison operators always treat
3225 their arguments as decimal numbers. This was broken in that numbers
3226 starting with 0 were being interpreted as octal.
3228 While fixing these problems I realized that there was another issue that
3229 hadn't been noticed. Values of message_size_limit (both the global option
3230 and the transport option) were treated as octal if they started with 0.
3231 The documentation was vague. These values are now always treated as
3232 decimal, and I will make that clear in the documentation.
3238 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
3239 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
3242 MH/01 Don't check that the operands of numeric comparison operators are
3243 integers when their expansion is in "skipping" mode (fixes bug
3244 introduced by 4.64-PH/07).
3246 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
3247 child addresses, Exim now panics and dies. Previously, because the count
3248 is held in a short int, deliveries were likely to be lost. As such a
3249 large number of recipients for a single message is ridiculous
3250 (performance will be very, very poor), I have chosen to impose a limit
3251 rather than extend the field.
3257 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
3258 leftover -K file (the existence of which was triggered by #402).
3259 While we were at it, introduced process PID as part of the -K
3260 filename. This should rule out race conditions when creating
3263 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
3264 processing considerably. Previous code took too long for large mails,
3265 triggering a timeout which in turn triggers #401.
3267 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
3268 in the DK code in transports.c. sendfile() is not really portable,
3269 hence the _LINUX specificness.
3271 TF/01 In the add_headers option to the mail command in an Exim filter,
3272 there was a bug that Exim would claim a syntax error in any
3273 header after the first one which had an odd number of characters
3276 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
3277 callout verification, Exim cached a "reject" for the entire domain. This
3278 is correct for most verifications, but it is not correct for a recipient
3279 verification with use_sender or use_postmaster set, because in that case
3280 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
3281 case of MAIL FROM:<> rejection from other early rejections (e.g.
3282 rejection of HELO). When verifying a recipient using a non-null MAIL
3283 address, the cache is ignored if it shows MAIL FROM:<> rejection.
3284 Whatever the result of the callout, the value of the domain cache is
3285 left unchanged (for any other kind of callout, getting as far as trying
3286 RCPT means that the domain itself is ok).
3288 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
3291 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
3292 manifest itself as EPIPE rather than ECONNECT. When tidying away a
3293 session, the daemon ignores ECONNECT errors and logs others; it now
3294 ignores EPIPE as well.
3296 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
3297 (quoted-printable decoding).
3299 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
3300 later the small subsequent patch to fix an introduced bug.
3302 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
3304 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
3306 PH/08 An error is now given if message_size_limit is specified negative.
3308 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
3309 to be given (somewhat) arbitrary names.
3311 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
3314 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
3315 miscellaneous code fixes
3317 PH/10 Added the log_reject_target ACL modifier to specify where to log
3320 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
3321 hostname. This is wrong, because it relates to the incoming message (and
3322 probably the interface on which it is arriving) and not to the outgoing
3323 callout (which could be using a different interface). This has been
3324 changed to use the value of the helo_data option from the smtp transport
3325 instead - this is what is used when a message is actually being sent. If
3326 there is no remote transport (possible with a router that sets up host
3327 addresses), $smtp_active_hostname is used.
3329 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
3330 tweaks were necessary in order to get it to work (see also 21 below):
3331 (a) The code assumed that strncpy() returns a negative number on buffer
3332 overflow, which isn't the case. Replaced with Exim's string_format()
3334 (b) There were several signed/unsigned issues. I just did the minimum
3335 hacking in of casts. There is scope for a larger refactoring.
3336 (c) The code used strcasecmp() which is not a standard C function.
3337 Replaced with Exim's strcmpic() function.
3338 (d) The code set only $1; it now sets $auth1 as well.
3339 (e) A simple test gave the error "authentication client didn't specify
3340 service in request". It would seem that Dovecot has changed its
3341 interface. Fortunately there's a specification; I followed it and
3342 changed what the client sends and it appears to be working now.
3344 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
3347 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
3348 address A is aliased to B and C, where B exists and C does not. Without
3349 -v the output is "A verified" because verification stops after a
3350 successful redirection if more than one address is generated. However,
3351 with -v the child addresses are also verified. Exim was outputting "A
3352 failed to verify" and then showing the successful verification for C,
3353 with its parentage. It now outputs "B failed to verify", showing B's
3354 parentage before showing the successful verification of C.
3356 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
3357 look up a TXT record in a specific list after matching in a combined
3360 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
3361 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
3362 they consult the DNS. I had assumed they would set it the way they
3363 wanted; and indeed my experiments on Linux seem to show that in some
3364 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
3365 To be on the safe side, however, I have now made the interface to
3366 host_find_byname() similar to host_find_bydns(), with an argument
3367 containing the DNS resolver options. The host_find_byname() function now
3368 sets these options at its start, just as host_find_bydns() does. The smtp
3369 transport options dns_qualify_single and dns_search_parents are passed to
3370 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
3371 of host_find_byname() use the default settings of RES_DEFNAMES
3372 (qualify_single) but not RES_DNSRCH (search_parents).
3374 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
3375 spool_read_header() do less string testing, by means of a preliminary
3376 switch on the second character of optional "-foo" lines. (This is
3377 overdue, caused by the large number of possibilities that now exist.
3378 Originally there were few.) While I was there, I also converted the
3379 str(n)cmp tests so they don't re-test the leading "-" and the first
3380 character, in the hope this might squeeze out yet more improvement.
3382 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
3383 flag allowing group syntax was set by the header_syntax check but not
3384 turned off, possible causing trouble later; (2) The flag was not being
3385 set at all for the header_verify test, causing "group"-style headers to
3386 be rejected. I have now set it in this case, and also caused header_
3387 verify to ignore an empty address taken from a group. While doing this, I
3388 came across some other cases where the code for allowing group syntax
3389 while scanning a header line wasn't quite right (mostly, not resetting
3390 the flag correctly in the right place). These bugs could have caused
3391 trouble for malformed header lines. I hope it is now all correct.
3393 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
3394 with the "reply" argument non-NULL. The code, however (which originally
3395 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
3396 but it didn't always do it. This confused somebody who was copying the
3397 code for some other use. I have removed all the tests.
3399 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
3400 feature that was used to support insecure browsers during the U.S. crypto
3401 embargo. It requires special client support, and Exim is probably the
3402 only MTA that supported it -- and would never use it because real RSA is
3403 always available. This code has been removed, because it had the bad
3404 effect of slowing Exim down by computing (never used) parameters for the
3405 RSA_EXPORT functionality.
3407 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
3408 authenticator to fail if there's a tab character in the incoming data
3409 (there should never be unless someone is messing about, as it's supposed
3410 to be base64-encoded). Also added, on Timo's advice, the "secured" option
3411 if the connection is using TLS or if the remote IP is the same as the
3412 local IP, and the "valid-client-cert option" if a client certificate has
3415 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
3416 authenticators. This can be used for authorization after authentication
3417 succeeds. (In the case of plaintext, it servers for both authentication
3420 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
3421 if any retry times were supplied.
3423 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
3424 connection, where there is no client IP address to check. In this
3425 situation, the verify now always succeeds.
3427 PH/25 Applied John Jetmore's -Mset patch.
3429 PH/26 Added -bem to be like -Mset, but loading a message from a file.
3431 PH/27 In a string expansion for a processed (not raw) header when multiple
3432 headers of the same name were present, leading whitespace was being
3433 removed from all of them, but trailing whitespace was being removed only
3434 from the last one. Now trailing whitespace is removed from each header
3435 before concatenation. Completely empty headers in a concatenation (as
3436 before) are ignored.
3438 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
3439 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
3441 PH/29 [Removed. This was a change that I later backed out, and forgot to
3442 correct the ChangeLog entry (that I had efficiently created) before
3443 committing the later change.]
3445 PH/30 Exim was sometimes attempting to deliver messages that had suffered
3446 address errors (4xx response to RCPT) over the same connection as other
3447 messages routed to the same hosts. Such deliveries are always "forced",
3448 so retry times are not inspected. This resulted in far too many retries
3449 for the affected addresses. The effect occurred only when there were more
3450 hosts than the hosts_max_try setting in the smtp transport when it had
3451 the 4xx errors. Those hosts that it had tried were not added to the list
3452 of hosts for which the message was waiting, so if all were tried, there
3453 was no problem. Two fixes have been applied:
3455 (i) If there are any address or message errors in an SMTP delivery, none
3456 of the hosts (tried or untried) are now added to the list of hosts
3457 for which the message is waiting, so the message should not be a
3458 candidate for sending over the same connection that was used for a
3459 successful delivery of some other message. This seems entirely
3460 reasonable: after all the message is NOT "waiting for some host".
3461 This is so "obvious" that I'm not sure why it wasn't done
3462 previously. Hope I haven't missed anything, but it can't do any
3463 harm, as the worst effect is to miss an optimization.
3465 (ii) If, despite (i), such a delivery is accidentally attempted, the
3466 routing retry time is respected, so at least it doesn't keep
3467 hammering the server.
3469 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
3470 in ${readsocket because some servers need this prod.
3472 PH/32 Added some extra debug output when updating a wait-xxx database.
3474 PH/33 The hint "could be header name not terminated by colon", which has been
3475 given for certain expansion errors for a long time, was not being given
3476 for the ${if def:h_colon_omitted{... case.
3478 PH/34 The spec says: "With one important exception, whenever a domain list is
3479 being scanned, $domain contains the subject domain." There was at least
3480 one case where this was not true.
3482 PH/35 The error "getsockname() failed: connection reset by peer" was being
3483 written to the panic log as well as the main log, but it isn't really
3484 panic-worthy as it just means the connection died rather early on. I have
3485 removed the panic log writing for the ECONNRESET error when getsockname()
3488 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
3489 runs only) independently of the message's sender address. This meant
3490 that, if the 4xx error was in fact related to the sender, a different
3491 message to the same recipient with a different sender could confuse
3492 things. In particular, this can happen when sending to a greylisting
3493 server, but other circumstances could also provoke similar problems.
3494 I have changed the default so that the retry time for these errors is now
3495 based a combination of the sender and recipient addresses. This change
3496 can be overridden by setting address_retry_include_sender=false in the
3499 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
3500 remote server are returned as part of bounce messages. This was not
3501 happening for LMTP over a pipe (the lmtp transport), but now it is the
3502 same for both kinds of LMTP.
3504 PH/38 Despite being documented as not happening, Exim was rewriting addresses
3505 in header lines that were in fact CNAMEs. This is no longer the case.
3507 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
3508 and queue runs started by the daemon processed all messages. This has
3509 been fixed so that -R and -S can now usefully be given with -q<time>.
3511 PH/40 Import PCRE release 6.7 (fixes some bugs).
3513 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
3515 PH/42 Give an error if -q is specified more than once.
3517 PH/43 Renamed the variables $interface_address and $interface_port as
3518 $received_ip_address and $received_port, to make it clear that these
3519 values apply to message reception, and not to the outgoing interface when
3520 a message is delivered. (The old names remain recognized, of course.)
3522 PH/44 There was no timeout on the connect() call when using a Unix domain
3523 socket in the ${readsocket expansion. There now is.
3525 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
3526 be meaningful with "accept".
3528 SC/01 Eximstats V1.43
3529 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
3531 SC/02 Eximstats V1.44
3532 Use a glob alias rather than an array ref in the generated
3533 parser. This improves both readability and performance.
3535 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
3536 Collect SpamAssassin and rejection statistics.
3537 Don't display local sender or destination tables unless
3538 there is data to show.
3539 Added average volumes into the top table text output.
3541 SC/04 Eximstats V1.46
3542 Collect data on the number of addresses (recipients)
3543 as well as the number of messages.
3545 SC/05 Eximstats V1.47
3546 Added 'Message too big' to the list of mail rejection
3547 reasons (thanks to Marco Gaiarin).
3549 SC/06 Eximstats V1.48
3550 Mainlog lines which have GMT offsets and are too short to
projects / exim.git / blob