1 Change log file for Exim from version 4.21
2 ------------------------------------------
3 This document describes *changes* to previous versions, that might
4 affect Exim's operation, with an unchanged configuration file. For new
5 options, and new features, see the NewStuff file next to this ChangeLog.
11 JH/01 Remove code calling the customisable local_scan function, unless a new
12 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
14 JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
15 non-signal-safe functions being used.
17 JH/03 Bug 2269: When presented with a received message having a stupidly large
18 number of DKIM-Signature headers, disable DKIM verification to avoid
19 a resource-consumption attack. The limit is set at twenty.
21 JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
22 report of oldest_pass in ${authres } in consequence, and separate out
23 some descriptions of reasons for verification fail.
25 JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
26 files in the spool were present and unlocked. A queue-runner could spot
27 them, resulting in a duplicate delivery. Fix that by doing the unlock
28 after the unlink. Investigation by Tim Stewart. Take the opportunity to
29 add more error-checking on spoolfile handling while that code is being
32 PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
33 No known attacks, no CVE, this is defensive hardening.
35 JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
36 a queue-runner could start a delivery while other operations were ongoing.
37 Cutthrough delivery was a common victim, resulting in duplicate delivery.
38 Found and investigated by Tim Stewart. Fix by using the open message data
39 file handle rather than opening another, and not locally closing it (which
40 releases a lock) for that case, while creating the temporary .eml format
41 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
43 JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
44 $sender_verify_failure/$recipient_verify_failure to "random".
46 JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
49 JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
50 Previously this would segfault.
52 JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
55 JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
56 like zero, since the resolver should be doing this for us, But we need one
57 as a CNAME but no MX presence gets the CNAME returned; we need to check
58 that doesn't point to an MX to declare it "no MX returned" rather than
59 "error, loop". A new main option is added so the older capability of
60 following some limited number of chain links is maintained.
62 JH/12 Add client-ip info to non-pass iprev ${authres } lines.
64 JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
65 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
66 now-deprecated earlier definitions used only specified the range up to TLS
67 1.2 (in the older-version library docs).
69 JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
71 JH/15 Rework TLS client-side context management. Stop using a global, and
72 explicitly pass a context around. This enables future use of TLS for
73 connections to service-daemons (eg. malware scanning) while a client smtp
74 connection is using TLS; with cutthrough connections this is quite likely.
76 JH/16 Fix ARC verification to do AS checks in reverse order.
78 JH/17 Support a "tls" option on the ${readsocket } expansion item.
80 JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
81 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
82 Previously the "utf8" would be re-prepended for every additional message.
84 JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
85 Previously thery were accepted, resulting in issues when attempting to
86 forward messages to a non-supporting MTA.
88 PP/02 Let -n work with printing macros too, not just options.
90 JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
91 one parent address was copied, and bogus data was used at delivery-logging
92 time. Either a crash (after delivery) or bogus log data could result.
93 Discovery and analysis by Tim Stewart.
95 PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
96 Previously if the string ended mid-character, we did not insert the
97 promised '?' replacement.
99 PP/04 Documentation: current string operators work on bytes, not codepoints.
101 JH/21 Change as many as possible of the global flags into one-bit bitfields; these
102 should pack well giving a smaller memory footprint so better caching and
103 therefore performance. Group the declarations where this can't be done so
104 that the byte-sized flag variables are not interspersed among pointer
105 variables, giving a better chance of good packing by the compiler.
107 JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
108 non-null, to avoid issues with sites running BATV. Previously reports were
109 sent with an empty envelope sender so looked like bounces.
111 JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
112 The ignore_error flag wasn't being returned from the filter subprocess so
113 was not set for later routers. Investigation and fix by Matthias Kurz.
115 JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
116 and a msg:complete for the whole, when a message is manually removed using
117 -Mrm. Developement by Matthias Kurz, hacked on by JH.
119 JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
120 a "Gnu special" function, asprintf() in the DB utility binary builds; I
121 hope that is portable enough.
123 JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
124 requiring a known-CA anchor certificate; make it now rely entirely on the
125 TLSA as an anchor. Checking the name on the leaf cert against the name
126 on the A-record for the host is still done for TA (but not for EE mode).
128 JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
129 included in delivery lines for non-proxied connections, when compiled with
130 SUPPORT_SOCKS and running with proxy logging enabled.
132 JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
133 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
134 move the existing event to fire before the normal logging of message
135 failure so that custom logging is bracketed by normal logging.
137 JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
138 msg:fail:internal event. Developement by Matthias Kurz.
140 JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
141 far too small for todays use of crypto signatures stored there. Go all
142 the way to the max DNS message size of 64kB, even though this might be
143 overmuch for IOT constrained device use.
145 JH/31 Fix a bad use of a copy function, which could be used to pointlessly
146 copy a string over itself. The library routine is documented as not
147 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
149 JH/32 For main options check_spool_space and check_inode_space, where the
150 platform supports 64b integers, support more than the previous 2^31 kB
151 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
152 the previous G, M, k.
154 JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
155 $authenticated_fail_id variable on authentication failure. Previously
158 JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
159 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
160 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
161 GNUTLS_SEC_PARAM_MEDIUM.
163 JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server
164 side. Previously we would continue as if no SNI had been received.
166 JH/36 Harden the handling of string-lists. When a list consisted of a sole
167 "<" character, which should be a list-separator specification, we walked
168 off past the nul-terimation.
170 JH/37 Bug 2341: Send "message delayed" warning MDNs (restricted to external
171 causes) even when the retry time is not yet met. Previously they were
172 not, meaning that when (say) an account was over-quota and temp-rejecting,
173 and multiple senders' messages were queued, only one sender would get
174 notified on each configured delay_warning cycle.
176 JH/38 Bug 2351: Log failures to extract envelope addresses from message headers.
178 JH/39 OpenSSL: clear the error stack after an SSL_accept(). With anon-auth
179 cipher-suites, an error can be left on the stack even for a succeeding
180 accept; this results in impossible error messages when a later operation
183 AM/01 Bug 2359: GnuTLS: repeat lowlevel read and write operations while they
184 return error codes indicating retry. Under TLS1.3 this becomes required.
186 JH/40 Fix the feature-cache refresh for EXPERIMENTAL_PIPE_CONNECT. Previously
187 it only wrote the new authenticators, resulting in a lack of tracking of
188 peer changes of ESMTP extensions until the next cache flush.
190 JH/41 Fix the loop reading a message header line to check for integer overflow,
191 and more-often against header_maxsize. Previously a crafted message could
192 induce a crash of the recive process; now the message is cleanly rejected.
198 GF/01 DEFER rather than ERROR on redis cluster MOVED response.
199 When redis_servers is set to a list of > 1 element, and the Redis servers
200 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
201 case of MOVED into a DEFER case instead, thus moving the query onto the
202 next server in the list. For a cluster of N elements, all N servers must
203 be defined in redis_servers.
205 GF/02 Catch and remove uninitialized value warning in exiqsumm
206 Check for existence of @ARGV before looking at $ARGV[0]
208 JH/01 Replace the store_release() internal interface with store_newblock(),
209 which internalises the check required to safely use the old one, plus
210 the allocate and data copy operations duplicated in both (!) of the
211 extant use locations.
213 JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
214 modifier. This matches the restriction on the commandline.
216 JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
217 Previously only the last row was returned.
219 JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
220 we assumed that tags in the header were well-formed, and parsed the
221 element content after inspecting only the first char of the tag.
222 Assumptions at that stage could crash the receive process on malformed
225 JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
226 While running the DKIM ACL we operate on the Permanent memory pool so that
227 variables created with "set" persist to the DATA ACL. Also (at any time)
228 DNS lookups that fail create cache records using the Permanent pool. But
229 expansions release any allocations made on the current pool - so a dnsdb
230 lookup expansion done in the DKIM ACL releases the memory used for the
231 DNS negative-cache, and bad things result. Solution is to switch to the
232 Main pool for expansions.
233 While we're in that code, add checks on the DNS cache during store_reset,
234 active in the testsuite.
235 Problem spotted, and debugging aided, by Wolfgang Breyha.
237 JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
238 When none of the hosts presented to a transport match an already-open
239 connection, close it and proceed with the list. Previously we would
240 queue the message. Spotted by Lena with Yahoo, probably involving
243 JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
244 Previously a spurious "250 OK id=" response was appended to the proper
247 JH/08 The "support for" informational output now, which built with Content
248 Scanning support, has a line for the malware scanner interfaces compiled
249 in. Interface can be individually included or not at build time.
251 JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
252 by the template makefile "src/EDITME". The "STREAM" support for an older
253 ClamAV interface method is removed.
255 JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
256 rows affected is given instead).
258 JH/11 The runtime Berkeley DB library version is now additionally output by
259 "exim -d -bV". Previously only the compile-time version was shown.
261 JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
262 SMTP connection. Previously, when one had more receipients than the
263 first, an abortive onward connection was made. Move to full support for
264 multiple onward connections in sequence, handling cutthrough connection
265 for all multi-message initiating connections.
267 JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
268 routers. Previously, a multi-recipient message would fail to match the
269 onward-connection opened for the first recipient, and cause its closure.
271 JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
272 a timeout on read on a GnuTLS initiating connection, resulting in the
273 initiating connection being dropped. This mattered most when the callout
274 was marked defer_ok. Fix to keep the two timeout-detection methods
277 JH/15 Relax results from ACL control request to enable cutthrough, in
278 unsupported situations, from error to silently (except under debug)
279 ignoring. This covers use with PRDR, frozen messages, queue-only and
282 HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
284 JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
285 metadata, resulting in a crash in free().
287 PP/01 Fix broken Heimdal GSSAPI authenticator integration.
288 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
289 Broken also in d185889f4, with init system revamp.
291 JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
292 Previously we abruptly closed the connection after reading a malware-
293 found indication; now we go on to read the "scan ok" response line,
296 JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
297 ACL. Previously, a crash would result.
299 JH/19 Speed up macro lookups during configuration file read, by skipping non-
300 macro text after a replacement (previously it was only once per line) and
301 by skipping builtin macros when searching for an uppercase lead character.
303 JH/20 DANE support moved from Experimental to mainline. The Makefile control
304 for the build is renamed.
306 JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
307 was allocated for every new TLS startup, meaning one per message. Fix
308 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
310 JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
311 reported the original. Fix to report (as far as possible) the ACL
312 result replacing the original.
314 JH/23 Fix memory leak during multi-message connections using STARTTLS under
315 OpenSSL. Certificate information is loaded for every new TLS startup,
316 and the resources needed to be freed.
318 JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
320 JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
323 JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
324 DATA response info to the (existing) per-recipient response info for
325 the "C=" log element. It can have useful tracking info from the
326 destination system. Patch from Simon Arlott.
328 JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
329 length value. Previously this would segfault.
331 HS/02 Support Avast multiline protoocol, this allows passing flags to
332 newer versions of the scanner.
334 JH/28 Ensure that variables possibly set during message acceptance are marked
335 dead before release of memory in the daemon loop. This stops complaints
336 about them when the debug_store option is enabled. Discovered specifically
337 for sender_rate_period, but applies to a whole set of variables.
338 Do the same for the queue-runner and queue-list loops, for variables set
339 from spool message files. Do the same for the SMTP per-message loop, for
340 certain variables indirectly set in ACL operations.
342 JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
343 as a multi-recipient message from a mailinglist manager). The coding had
344 an arbitrary cutoff number of characters while checking for more input;
345 enforced by writing a NUL into the buffer. This corrupted long / fast
346 input. The problem was exposed more widely when more pipelineing of SMTP
347 responses was introduced, and one Exim system was feeding another.
348 The symptom is log complaints of SMTP syntax error (NUL chars) on the
349 receiving system, and refused recipients seen by the sending system
350 (propating to people being dropped from mailing lists).
351 Discovered and pinpointed by David Carter.
353 JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
354 replaced by the ${authresults } expansion.
356 JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
358 HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
359 allows proper process termination in container environments.
361 JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
362 Previously the "final dot" had a newline after it; ensure it is CR,LF.
364 JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
365 and "err_perm", deprecated since 4.83 when the RFC-defined words
366 "temperror" and "permerror" were introduced.
368 JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
369 transport-filters or DKIM-signing. The restriction was lost in the
370 consolidation of verify-callout and delivery SMTP handling.
371 Extend the restriction to also cover ARC-signing.
373 JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
374 in defer=pass mode supply a 450 to the initiator. Previously the message
377 PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
378 tls_require_ciphers is used as before.
380 HS/03 Malware Avast: Better match the Avast multiline protocol. Add
381 "pass_unscanned". Only tmpfails from the scanner are written to
382 the paniclog, as they may require admin intervention (permission
383 denied, license issues). Other scanner errors (like decompression
384 bombs) do not cause a paniclog entry.
386 JH/36 Fix reinitialisation of DKIM logging variable between messages.
387 Previously it was possible to log spurious information in receive log
390 JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
391 triggered odd behaviour from Outlook Express clients.
393 PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
396 JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
397 since the IETF WG has not yet settled on that versus the original
398 "bare" representation.
400 JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
401 Previously the millisecond value corrupted the output.
402 Fix also for syslog_pid=no and log_selector +pid, for which the pid
403 corrupted the output.
409 JH/01 Rework error string handling in TLS interface so that the caller in
410 more cases is responsible for logging. This permits library-sourced
411 string to be attached to addresses during delivery, and collapses
412 pairs of long lines into single ones.
414 PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
415 during configuration. Wildcards are allowed and expanded.
417 JH/02 Rework error string handling in DKIM to pass more info back to callers.
418 This permits better logging.
420 JH/03 Rework the transport continued-connection mechanism: when TLS is active,
421 do not close it down and have the child transport start it up again on
422 the passed-on TCP connection. Instead, proxy the child (and any
423 subsequent ones) for TLS via a unix-domain socket channel. Logging is
424 affected: the continued delivery log lines do not have any DNSSEC, TLS
425 Certificate or OCSP information. TLS cipher information is still logged.
427 JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
428 identical IP addresses on different listening ports. Will also affect
431 PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
432 add noisy ifdef guards to special-case this sillyness.
433 Patch from Bernd Kuhls.
435 JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
436 than 255 are no longer allowed.
438 JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
439 Disable the session-cache too, which might reduce our load. Since we
440 currrectly use a new context for every connection, both as server and
441 client, there is no benefit for these.
442 GnuTLS appears to not support tickets server-side by default (we don't
443 call gnutls_session_ticket_enable_server()) but client side is enabled
444 by default on recent versions (3.1.3 +) unless the PFS priority string
447 PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
448 <https://reproducible-builds.org/specs/source-date-epoch/>.
450 JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
451 the check for any unsuccessful recipients did not notice the limit, and
452 erroneously found still-pending ones.
454 JH/08 Pipeline CHUNKING command and data together, on kernels that support
455 MSG_MORE. Only in-clear (not on TLS connections).
457 JH/09 Avoid using a temporary file during transport using dkim. Unless a
458 transport-filter is involved we can buffer the headers in memory for
459 creating the signature, and read the spool data file once for the
460 signature and again for transmission.
462 JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
463 4.77 as the kernel support then wasn't solid, having issues in 64bit
464 mode. Now, it's been long enough. Add support for FreeBSD also.
466 JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
467 case where the routing stage had gathered several addresses to send to
468 a host before calling the transport for the first, we previously failed
469 to close down TLS in the old transport process before passing the TCP
470 connection to the new process. The new one sent a STARTTLS command
471 which naturally failed, giving a failed delivery and bloating the retry
472 database. Investigation and fix prototype from Wolfgang Breyha.
474 JH/12 Fix check on SMTP command input synchronisation. Previously there were
475 false-negatives in the check that the sender had not preempted a response
476 or prompt from Exim (running as a server), due to that code's lack of
477 awareness of the SMTP input buffering.
479 PP/04 Add commandline_checks_require_admin option.
480 Exim drops privileges sanely, various checks such as -be aren't a
481 security problem, as long as you trust local users with access to their
482 own account. When invoked by services which pass untrusted data to
483 Exim, this might be an issue. Set this option in main configuration
484 AND make fixes to the calling application, such as using `--` to stop
487 JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
488 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
489 responses to those, into a single TLS record each way (this usually means
490 a single packet). As a side issue, smtp_enforce_sync now works on TLS
493 PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
494 affects you only if you're dancing at the edge of the param size limits.
495 If you are, and this message makes sense to you, then: raise the
496 configured limit or use OpenSSL 1.1. Nothing we can do for older
499 JH/14 For the "sock" variant of the malware scanner interface, accept an empty
500 cmdline element to get the documented default one. Previously it was
503 JH/15 Fix a crash in the smtp transport caused when two hosts in succession
504 are unsuable for non-message-specific reasons - eg. connection timeout,
505 banner-time rejection.
507 JH/16 Fix logging of delivery remote port, when specified by router, under
510 PP/06 Repair manualroute's ability to take options in any order, even if one
511 is the name of a transport.
514 HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
516 JH/17 Change the list-building routines interface to use the expanding-string
517 triplet model, for better allocation and copying behaviour.
519 JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
520 Previously it was constructed the first time a possibly-matching string
521 was met in the configuration file input during startup; now it is done
524 JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
525 compatible one, to avoid the (poorly documented) possibility of a config
526 file in the working directory redirecting the DB files, possibly correpting
527 some existing file. CVE-2017-10140 assigned for BDB.
529 JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
530 cache-hot. Previously, although the result was properly cached, the
531 initial verify call returned a defer.
533 JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
534 the main verify for receipient in uncached-mode.
536 JH/22 Retire historical build files to an "unsupported" subdir. These are
537 defined as "ones for which we have no current evidence of testing".
539 JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
540 if present. Previously it was ignored.
542 JH/24 Start using specified-initialisers in C structure init coding. This is
543 a C99 feature (it's 2017, so now considered safe).
545 JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
546 if was a fixed-sized field and bitmask ops via macros; it is now more
549 PP/07 GitHub PR 56: Apply MariaDB build fix.
550 Patch provided by Jaroslav Škarvada.
552 PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
553 during Coverity cleanups [4.87 JH/47]
554 Diagnosis and fix provided by Michael Fischer v. Mollard.
556 JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
557 the right size to place the terminating semicolon on its own folded
558 line, the header hash was calculated to an incorrect value thanks to
559 the (relaxed) space the fold became.
561 HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
562 and confused the parent.
564 JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
565 which could crash as a result. This could lead to undeliverable messages.
567 JH/28 Logging: "next input sent too soon" now shows where input was truncated
570 JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
571 matters on fast-turnover and PID-randomising systems, which were getting
572 out-of-order delivery.
574 JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
575 a possibly-overlapping copy. The symptom was that "Remote host closed
576 connection in response to HELO" was logged instead of the actual 4xx
579 JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
580 Previously only that bufferd was discarded, resulting in SYMTP command
583 JH/32 DKIM: when a message has multiple signatures matching an identity given
584 in dkim_verify_signers, run the dkim acl once for each. Previously only
585 one run was done. Bug 2189.
587 JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
588 "panic the current process" to "deliberately defer". The panic log is
589 still written with the problem list name; the mail and reject logs now
590 get a temp-reject line for the message that was being handled, saying
591 something like "domains check lookup or other defer". The SMTP 451
592 message is still "Temporary local problem".
594 JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
595 A crafted sequence of BDAT commands could result in in-use memory beeing
596 freed. CVE-2017-16943.
598 HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
599 from SMTP input. Previously it was always done; now only done for DATA
600 and not BDAT commands. CVE-2017-16944.
602 JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
603 to the message (such as an overlong header line). Previously this was
604 not done and we did not exit BDAT mode. Followon from the previous item
605 though a different problem.
611 JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
612 than -2003 did; needs libidn2 in addition to libidn.
614 JH/02 The path option on a pipe transport is now expanded before use.
616 PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
617 Patch provided by "Björn", documentation fix added too.
619 JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
620 missing a wire-to-host endian conversion.
622 JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
623 close after a BDAT command line could be taken as a following command,
624 giving a synch failure. Fix by only checking for synch immediately
625 before acknowledging the chunk.
627 PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
628 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
629 macro. Patches provided by Josh Soref.
631 JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
632 Previously we did not; the RFC seems ambiguous and VRFY is not listed
633 by IANA as a service extension. However, John Klensin suggests that we
636 JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
637 the dkim code may be unix-mode line endings rather than smtp wire-format
638 CRLF, so prepend a CR to any bare LF.
640 JH/07 Rationalise the coding for callout smtp conversations and transport ones.
641 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
643 JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
644 the first were themselves being wrongly included in the feed into dkim
645 processing; with most chunk sizes in use this resulted in an incorrect
646 body hash calculated value.
648 JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
649 DKIM signature block, for verification. Although advised against by
650 standards it is specifically not ruled illegal.
652 JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
654 JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
655 missing a body hash (the bh= tag).
657 JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
658 It seems that HAProxy sends the Proxy Protocol information in clear and
659 only then does a TLS startup, so do the same.
661 JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
662 TCP connections (such as for Spamd) unless the daemon successfully set
663 Fast Open mode on its listening sockets. This fixes breakage seen on
664 too-old kernels or those not configured for Fast Open, at the cost of
665 requiring both directions being enabled for TFO, and TFO never being used
666 by non-daemon-related Exim processes.
668 JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
669 endings, at least on the first header line. Try to canonify any that get
670 past that check, despite the cost.
672 JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
673 now limited to an arbitrary five deep, while parsing addresses with the
674 strip_excess_angle_brackets option enabled.
676 PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
677 instead leave the unprompted TLS handshake in socket buffer for the
678 TLS library to consume.
680 PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
682 PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
684 JH/16 Drop variables when they go out of scope. Memory management drops a whole
685 region in one operation, for speed, and this leaves assigned pointers
686 dangling. Add checks run only under the testsuite which checks all
687 variables at a store-reset and panics on a dangling pointer; add code
688 explicitly nulling out all the variables discovered. Fixes one known
689 bug: a transport crash, where a dangling pointer for $sending_ip_address
690 originally assigned in a verify callout, is re-used.
692 PP/06 Drop '.' from @INC in various Perl scripts.
694 PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
696 PP/08 Reduce a number of compilation warnings under clang; building with
697 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
698 should be warning-free.
700 JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
702 HS/01 Fix portability problems introduced by PP/08 for platforms where
703 realloc(NULL) is not equivalent to malloc() [SunOS et al].
705 HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
706 chunk. This allows us to accept broken chunked messages. We need a more
707 general solution here.
709 PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
710 already-broken messages in the queue.
712 JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
714 JH/19 Fix reference counting bug in routing-generated-address tracking.
720 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
721 supports it and a size is available (ie. the sending peer gave us one).
723 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
724 years of being deprecated). The replacements are the ACLs
725 acl_smtp_mime and acl_not_smtp_mime.
727 JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
728 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
729 or even an in-clear connection were permitted. Now, if the host lookup
730 was dnssec and dane was requested then the host is only used if the
731 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
732 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
733 if one fails this test.
734 This means that a poorly-configured remote DNS will make it incommunicado;
735 but it protects against a DNS-interception attack on it.
737 JH/04 Bug 1810: make continued-use of an open smtp transport connection
738 non-noisy when a race steals the message being considered.
740 JH/05 If main configuration option tls_certificate is unset, generate a
741 self-signed certificate for inbound TLS connections.
743 JH/06 Bug 165: hide more cases of password exposure - this time in expansions
744 in rewrites and routers.
746 JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
747 and logged a warning sing 4.83; now they are a configuration file error.
749 JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
750 (lacking @domain). Apply the same qualification processing as RCPT.
752 JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
754 JH/10 Support ${sha256:} applied to a string (as well as the previous
757 JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
758 a cutthrough deliver is pending, as we always want to make a connection.
759 This also avoids re-routing the message when later placing the cutthrough
760 connection after a verify cache hit.
761 Do not update it with the verify result either.
763 JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
764 when routing results in more than one destination address.
766 JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
767 signing (which inhibits the cutthrough capability). Previously only
768 the presence of an option was tested; now an expansion evaluating as
769 empty is permissible (obviously it should depend only on data available
770 when the cutthrough connection is made).
772 JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
773 the relevant preceding SMTP command did not note the pipelining mode.
775 JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
776 Previously they were not counted.
778 JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
779 as one having no matching records. Previously we deferred the message
780 that needed the lookup.
782 JH/17 Fakereject: previously logged as a normal message arrival "<="; now
783 distinguished as "(=".
785 JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
786 for missing MX records. Previously it only worked for missing A records.
788 JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
790 JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
791 after the data-go-ahead and data-ack. Patch from Jason Betts.
793 JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
794 even for a "none" policy. Patch from Tony Meyer.
796 JH/22 Fix continued use of a connection for further deliveries. If a port was
797 specified by a router, it must also match for the delivery to be
800 JH/23 Bug 1874: fix continued use of a connection for further deliveries.
801 When one of the recipients of a message was unsuitable for the connection
802 (has no matching addresses), we lost track of needing to mark it
803 deferred. As a result mail would be lost.
805 JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
807 JH/25 Decoding ACL controls is now done using a binary search; the source code
808 takes up less space and should be simpler to maintain. Merge the ACL
809 condition decode tables also, with similar effect.
811 JH/26 Fix problem with one_time used on a redirect router which returned the
812 parent address unchanged. A retry would see the parent address marked as
813 delivered, so not attempt the (identical) child. As a result mail would
816 JH/27 Fix a possible security hole, wherein a process operating with the Exim
817 UID can gain a root shell. Credit to http://www.halfdog.net/ for
818 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
821 JH/28 Enable {spool,log} filesystem space and inode checks as default.
822 Main config options check_{log,spool}_{inodes,space} are now
823 100 inodes, 10MB unless set otherwise in the configuration.
825 JH/29 Fix the connection_reject log selector to apply to the connect ACL.
826 Previously it only applied to the main-section connection policy
829 JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
831 PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
832 by me. Added RFC7919 DH primes as an alternative.
834 PP/02 Unbreak build via pkg-config with new hash support when crypto headers
835 are not in the system include path.
837 JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
838 GnuTLS, when a session startup failed (eg because the client disconnected)
839 Exim did stdio operations after fclose. This was exposed by a recent
840 change which nulled out the file handle after the fclose.
842 JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
843 signed directly by the cert-signing cert, rather than an intermediate
844 OCSP-signing cert. This is the model used by LetsEncrypt.
846 JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
848 HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
849 an incoming connection.
851 HS/02 Bug 1802: Do not half-close the connection after sending a request
854 HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
855 fallback to "prime256v1".
857 JH/34 SECURITY: Use proper copy of DATA command in error message.
858 Could leak key material. Remotely exploitable. CVE-2016-9963.
864 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
865 and 3.4.4 - once the server is enabled to respond to an OCSP request
866 it does even when not requested, resulting in a stapling non-aware
867 client dropping the TLS connection.
869 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
870 support variable-length bit vectors. No functional change.
872 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
873 The I= interface field on outgoing lines is now after the H= remote
874 host field, same as incoming lines. There is a separate
875 outgoing_interface log selector which allows you to disable the
878 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
879 If not running log_selector +smtp_connection the mainlog would be held
880 open indefinitely after a "too many connections" event, including to a
881 deleted file after a log rotate. Leave the per net connection logging
882 leaving it open for efficiency as that will be quickly detected by the
883 check on the next write.
885 HS/01 Bug 1671: Fix post transport crash.
886 Processing the wait-<transport> messages could crash the delivery
887 process if the message IDs didn't exist for some reason. When
888 using 'split_spool_directory=yes' the construction of the spool
889 file name failed already, exposing the same netto behaviour.
891 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
892 mime_regex ACL conditions.
894 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
895 to DSN fail messages (bounces): remote IP, remote greeting, remote response
896 to HELO, local diagnostic string.
898 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
899 log line to debug. Even when configured with a tls authenticator many
900 client connections are expected to not authenticate in this way, so
901 an authenticate fail is not an error.
903 HS/02 Add the Exim version string to the process info. This way exiwhat
904 gives some more detail about the running daemon.
906 JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
907 matter for fast-change records such as DNSBLs.
909 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
910 retry record, even if constant. There may be multiple transports with
911 different interface settings and the retry behaviour needs to be kept
914 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
916 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
918 JH/10 Bug 840: fix log_defer_output option of pipe transport
920 JH/11 Bug 830: use same host for all RCPTS of a message, even under
921 hosts_randomize. This matters a lot when combined with mua_wrapper.
923 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
924 ${quote_pgsql:<string>} operator.
926 JH/13 Bug 1708: avoid misaligned access in cached lookup.
928 JH/14 Change header file name for freeradius-client. Relevant if compiling
929 with Radius support; from the Gentoo tree and checked under Fedora.
931 JH/15 Bug 1712: Introduce $prdr_requested flag variable
933 JH/16 Bug 1714: Permit an empty string as expansion result for transport
934 option transport_filter, meaning no filtering.
936 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
938 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
939 defaults to "*" (all hosts). The variable is now available when not built
940 with TLS, default unset, mainly to enable keeping the testsuite sane.
941 If a server certificate is not supplied (via tls_certificate) an error is
942 logged, and clients will find TLS connections fail on startup. Presumably
943 they will retry in-clear.
944 Packagers of Exim are strongly encouraged to create a server certificate
945 at installation time.
947 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
948 with the $config_file variable.
950 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
951 in transport context, after the attempt, and per-recipient. The latter type
952 is per host attempted. The event data is the error message, and the errno
953 information encodes the lookup type (A vs. MX) used for the (first) host,
954 and the trailing two digits of the smtp 4xx response.
956 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
957 to write to mainlog (or rejectlog, paniclog) in the window between file
958 creation and permissions/ownership being changed. Particularly affects
959 installations where exicyclog is run as root, rather than exim user;
960 result is that the running daemon panics and dies.
962 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
964 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
965 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
966 "pri" and "weight". Note that the previous implicit priority given by the
967 list order is no longer honoured.
969 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
972 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
973 by defining SUPPORT_SOCKS.
975 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
976 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
977 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
978 variables are renamed to proxy_{local,external}_{address,port}.
980 JH/27 Move Internationalisation support from Experimental to mainline, enabled
981 for a build by defining SUPPORT_I18N
983 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
984 of the query string, and make ${quote_redis:} do that quoting.
986 JH/29 Move Events support from Experimental to mainline, enabled by default
987 and removable for a build by defining DISABLE_EVENT.
989 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
991 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
992 cached by the daemon.
994 JH/32 Move Redis support from Experimental to mainline, enabled for a build
995 by defining LOOKUP_REDIS. The libhiredis library is required.
997 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
998 keys are given for lookup.
1000 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
1001 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
1002 only supported when built with TLS support. The PolarSSL SHA routines
1003 are still used when the TLS library is too old for convenient support.
1005 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
1006 openssl_options), for security. OpenSSL forces this from version 1.1.0
1007 server-side so match that on older versions.
1009 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
1010 allocation for $value could be released as the expansion processing
1011 concluded, but leaving the global pointer active for it.
1013 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
1014 and to use the domains and local_parts ACL conditions.
1016 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
1017 incorrectly not doubled on cutthrough transmission, hence seen as a
1018 body-termination at the receiving system - resulting in truncated mails.
1019 Commonly the sender saw a TCP-level error, and retransmitted the message
1020 via the normal store-and-forward channel. This could result in duplicates
1021 received - but deduplicating mailstores were liable to retain only the
1022 initial truncated version.
1024 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
1026 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1028 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1029 we're in there, support oversigning also; bug 1309.
1031 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1033 HS/04 Add support for keep_environment and add_environment options.
1035 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1036 either intentional arithmetic overflow during PRNG, or testing config-
1039 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1040 delivery resulted in actual delivery. Cancel cutthrough before DATA
1043 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1044 rejects a recipient: pass the reject to the originator.
1046 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1047 Many were false-positives and ignorable, but it's worth fixing the
1050 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1051 for the new environment-manipulation done at startup. Move the routines
1052 from being local to tls.c to being global via the os.c file.
1054 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1055 an extract embedded as result-arg for a map, the first arg for extract
1056 is unavailable so we cannot tell if this is a numbered or keyed
1057 extraction. Accept either.
1063 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1066 JH/02 The smtp transport option "multi_domain" is now expanded.
1068 JH/03 The smtp transport now requests PRDR by default, if the server offers
1071 JH/04 Certificate name checking on server certificates, when exim is a client,
1072 is now done by default. The transport option tls_verify_cert_hostnames
1073 can be used to disable this per-host. The build option
1074 EXPERIMENTAL_CERTNAMES is withdrawn.
1076 JH/05 The value of the tls_verify_certificates smtp transport and main options
1077 default to the word "system" to access the system default CA bundle.
1078 For GnuTLS, only version 3.0.20 or later.
1080 JH/06 Verification of the server certificate for a TLS connection is now tried
1081 (but not required) by default. The verification status is now logged by
1082 default, for both outbound TLS and client-certificate supplying inbound
1085 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1088 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1089 Status Notification (bounce) messages are now MIME format per RFC 3464.
1090 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1091 under the control of the dsn_advertise_hosts option, and routers may
1092 have a dsn_lasthop option.
1094 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1095 default, modifiable by a malware= option. The list separator for
1096 the options can now be changed in the usual way. Bug 68.
1098 JH/10 The smtp_receive_timeout main option is now expanded before use.
1100 JH/11 The incoming_interface log option now also enables logging of the
1101 local interface on delivery outgoing connections.
1103 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1104 if the interface and destination host and port all match.
1106 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1109 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1110 Patch from Andrew Lewis.
1112 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
1113 now supports optional time-restrictions, weighting, and priority
1114 modifiers per server. Patch originally by <rommer@active.by>.
1116 JH/16 The spamd_address main option now supports a mixed list of local
1117 and remote servers. Remote servers can be IPv6 addresses, and
1118 specify a port-range.
1120 JH/17 Bug 68: The spamd_address main option now supports an optional
1121 timeout value per server.
1123 JH/18 Bug 1581: Router and transport options headers_add/remove can
1124 now have the list separator specified.
1126 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
1129 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
1132 JH/21 Support for the A6 type of dns record is withdrawn.
1134 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1135 rather than the verbs used.
1137 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1138 from 255 to 1024 chars.
1140 JH/24 Verification callouts now attempt to use TLS by default.
1142 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
1143 are generic router options now. The defaults didn't change.
1145 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1146 Original patch from Alexander Shikoff, worked over by JH.
1148 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1149 files if ZCAT_COMMAND is not executable.
1151 JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
1153 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1155 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1156 Normally benign, it bites when the pair was led to by a CNAME;
1157 modern usage is to not canonicalize the domain to a CNAME target
1158 (and we were inconsistent anyway for A-only vs AAAA+A).
1160 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1162 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1163 when evaluating $sender_host_dnssec.
1165 JH/31 Check the HELO verification lookup for DNSSEC, adding new
1166 $sender_helo_dnssec variable.
1168 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1170 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1172 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1174 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1175 documented as working, but never had. Support all but $spam_report.
1177 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1178 added for tls authenticator.
1180 HS/03 Add perl_taintmode main config option
1186 TL/01 When running the test suite, the README says that variables such as
1187 no_msglog_check are global and can be placed anywhere in a specific
1188 test's script, however it was observed that placement needed to be near
1189 the beginning for it to behave that way. Changed the runtest perl
1190 script to read through the entire script once to detect and set these
1191 variables, reset to the beginning of the script, and then run through
1192 the script parsing/test process like normal.
1194 TL/02 The BSD's have an arc4random API. One of the functions to induce
1195 adding randomness was arc4random_stir(), but it has been removed in
1196 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1197 function when detected.
1199 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1200 cause callback expansion.
1202 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1203 syntax errors in an expansion can be treated as a string instead of
1204 logging or causing an error, due to the internal use of bool_lax
1205 instead of bool when processing it.
1207 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
1208 server certificates when making smtp deliveries.
1210 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1212 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1214 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1216 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1217 Merged patch from Sebastian Wiedenroth.
1219 JH/05 Fix results-pipe from transport process. Several recipients, combined
1220 with certificate use, exposed issues where response data items split
1221 over buffer boundaries were not parsed properly. This eventually
1222 resulted in duplicates being sent. This issue only became common enough
1223 to notice due to the introduction of connection certificate information,
1224 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1226 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1227 size buffer was used, resulting in syntax errors when an expansion
1230 JH/07 Add support for directories of certificates when compiled with a GnuTLS
1231 version 3.3.6 or later.
1233 JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
1234 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1235 both become "event_action", the variables become $event_name, $event_data
1236 and $event_defer_errno. There is a new variable $verify_mode, usable in
1237 routers, transports and related events. The tls:cert event is now also
1238 raised for inbound connections, if the main configuration event_action
1241 TL/06 In test suite, disable OCSP for old versions of openssl which contained
1242 early OCSP support, but no stapling (appears to be less than 1.0.0).
1244 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1245 server certificate names available under the smtp transport option
1246 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1249 JH/10 Time-related extraction expansions from certificates now use the main
1250 option "timezone" setting for output formatting, and are consistent
1251 between OpenSSL and GnuTLS compilations. Bug 1541.
1253 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1254 encoded parameter in the incoming message. Bug 1558.
1256 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1257 include certificate info, eximon was claiming there were spoolfile
1260 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
1262 JH/14 Log delivery-related information more consistently, using the sequence
1263 "H=<name> [<ip>]" wherever possible.
1265 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1266 are problematic for Debian distribution, omit them from the release
1269 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1271 JH/16 Fix string representation of time values on 64bit time_t architectures.
1274 JH/17 Fix a null-indirection in certextract expansions when a nondefault
1275 output list separator was used.
1280 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1281 checkers that were complaining about end of non-void function with no
1284 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
1285 This was a regression introduced in 4.83 by another bugfix.
1287 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1289 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
1290 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
1296 TF/01 Correctly close the server side of TLS when forking for delivery.
1298 When a message was received over SMTP with TLS, Exim failed to clear up
1299 the incoming connection properly after forking off the child process to
1300 deliver the message. In some situations the subsequent outgoing
1301 delivery connection happened to have the same fd number as the incoming
1302 connection previously had. Exim would try to use TLS and fail, logging
1303 a "Bad file descriptor" error.
1305 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1306 utilities have not been installed.
1308 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1309 temporary space as the ACL may create new global variables.
1311 TL/01 LDAP support uses per connection or global context settings, depending
1312 upon the detected version of the libraries at build time.
1314 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1315 to extract and use the src ip:port in logging and expansions as if it
1316 were a direct connection from the outside internet. PPv2 support was
1317 updated based on HAProxy spec change in May 2014.
1319 JH/02 Add ${listextract {number}{list}{success}{fail}}.
1321 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1322 Properly escape header and check for NULL return.
1324 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1327 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1329 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1330 characters in header names, implemented as a verify condition.
1331 Contributed by Michael Fischer v. Mollard.
1333 TL/05 Rename SPF condition results err_perm and err_temp to standardized
1334 results permerror and temperror. Previous values are deprecated but
1335 still accepted. In a future release, err_perm and err_temp will be
1336 completely removed, which will be a backward incompatibility if the
1337 ACL tests for either of these two old results. Patch contributed by
1338 user bes-internal on the mailing list.
1340 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1342 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1343 selectors, in both main and reject logs.
1345 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1348 JH/07 Add malware type "sock" for talking to simple daemon.
1350 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
1352 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1353 routers/transports under cutthrough routing.
1355 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1356 numbers. Touch up "bool" conditional to keep the same definition.
1358 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1360 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1362 JH/12 Expand items in router/transport headers_add or headers_remove lists
1363 individually rather than the list as a whole. Bug 1452.
1365 Required for reasonable handling of multiple headers_ options when
1366 they may be empty; requires that headers_remove items with embedded
1367 colons must have them doubled (or the list-separator changed).
1369 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1370 view the policy declared in the DMARC record. Currently, $dmarc_status
1371 is a combined value of both the record presence and the result of the
1374 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1376 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
1377 dnslookup router and the smtp transport (applying to the forward
1380 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1381 of ldap servers used for a specific lookup. Patch provided by Heiko
1384 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
1385 New variable $lookup_dnssec_authenticated for observability.
1387 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1388 Patch submitted by Lars Timman.
1390 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1392 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1393 Requires trusted mode and valid format message id, aborts otherwise.
1394 Patch contributed by Heiko Schlichting.
1396 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1397 certextract with support for various fields. Bug 1358.
1399 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1400 is requested by default, modifiable by smtp transport option
1403 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
1404 operate on certificate variables to give certificate fingerprints
1405 Also new ${sha256:cert_variable}.
1407 JH/23 The PRDR feature is moved from being Experimental into the mainline.
1409 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1410 Christian Aistleitner.
1412 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1414 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1415 file. Patch from Wolfgang Breyha.
1417 JH/25 Expand the coverage of the delivery $host and $host_address to
1418 client authenticators run in verify callout. Bug 1476.
1420 JH/26 Port service names are now accepted for tls_on_connect_ports, to
1421 align with daemon_smtp_ports. Bug 72.
1423 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1424 support and error reporting did not work properly.
1426 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1427 and is readable. Patch from Andrew Colin Kissa.
1429 TL/14 Enhance documentation of ${run expansion and how it parses the
1430 commandline after expansion, particularly in the case when an
1431 unquoted variable expansion results in an empty value.
1433 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1435 PP/02 Fix internal collision of T_APL on systems which support RFC3123
1436 by renaming away from it. Addresses GH issue 15, reported by
1439 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1441 TL/15 SECURITY: prevent double expansion in math comparison functions
1442 (can expand unsanitized data). Not remotely exploitable.
1449 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1451 PP/02 Make -n do something, by making it not do something.
1452 When combined with -bP, the name of an option is not output.
1454 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1457 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1458 $sender_host_name and config options to manage this, and basic check
1461 PP/05 DSCP support for outbound connections and control modifier for inbound.
1463 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
1464 (Only plugin which currently uses this is kerberos4, which nobody should
1465 be using, but we should make it available and other future plugins might
1466 conceivably use it, even though it would break NAT; stuff *should* be
1467 using channel bindings instead).
1469 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
1470 name; added for Sendmail compatibility; requires admin caller.
1471 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1472 just ignore it); requires trusted caller.
1473 Also parse but ignore: -Ac -Am -X<logfile>
1476 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
1478 TL/02 Add +smtp_confirmation as a default logging option.
1480 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1481 Patch by Magnus Holmgren from 2007-02-20.
1483 TL/04 Bugzilla 1281 - Spec typo.
1484 Bugzilla 1283 - Spec typo.
1485 Bugzilla 1290 - Spec grammar fixes.
1487 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
1489 TL/06 Add Experimental DMARC support using libopendmarc libraries.
1491 TL/07 Fix an out of order global option causing a segfault. Reported to dev
1492 mailing list by by Dmitry Isaikin.
1494 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1496 JH/02 Support "G" suffix to numbers in ${if comparisons.
1498 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1500 NM/01 Bugzilla 1197 - Spec typo
1501 Bugzilla 1196 - Spec examples corrections
1503 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
1505 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1506 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1509 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1510 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1512 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1513 "acl {{name}{arg}...}", and optional args on acl condition
1516 JH/05 Permit multiple router/transport headers_add/remove lines.
1518 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1520 JH/07 Avoid using a waiting database for a single-message-only transport.
1521 Performance patch from Paul Fisher. Bugzilla 1262.
1523 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1526 JH/09 Add $headers_added variable, with content from use of ACL modifier
1527 add_header (but not yet added to the message). Bugzilla 199.
1529 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1530 Pulled from Bugzilla 817 by Wolfgang Breyha.
1532 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1534 (nb: this is the same fix as in Exim 4.80.1)
1536 JH/11 Add A= logging on delivery lines, and a client_set_id option on
1539 JH/12 Add optional authenticated_sender logging to A= and a log_selector
1542 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1544 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1545 advertise SMTP AUTH mechanism to us, instead of a generic
1546 protocol violation error. Also, make Exim more robust to bad
1547 data from the Dovecot auth socket.
1549 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1551 When a queue runner is handling a message, Exim first routes the
1552 recipient addresses, during which it prunes them based on the retry
1553 hints database. After that it attempts to deliver the message to
1554 any remaining recipients. It then updates the hints database using
1557 So if a recipient address works intermittently, it can get repeatedly
1558 deferred at routing time. The retry hints record remains fresh so the
1559 address never reaches the final cutoff time.
1561 This is a fairly common occurrence when a user is bumping up against
1562 their storage quota. Exim had some logic in its local delivery code
1563 to deal with this. However it did not apply to per-recipient defers
1564 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1566 This change adds a proper retry rule check during routing so that the
1567 final cutoff time is checked against the message's age. We only do
1568 this check if there is an address retry record and there is not a
1569 domain retry record; this implies that previous attempts to handle
1570 the address had the retry_use_local_parts option turned on. We use
1571 this as an approximation for the destination being like a local
1572 delivery, as in LMTP.
1574 I suspect this new check makes the old local delivery cutoff check
1575 redundant, but I have not verified this so I left the code in place.
1577 TF/02 Correct gecos expansion when From: is a prefix of the username.
1579 Test 0254 submits a message to Exim with the header
1583 When I ran the test suite under the user fanf2, Exim expanded
1584 the header to contain my full name, whereas it should have added
1585 a Resent-Sender: header. It erroneously treats any prefix of the
1586 username as equal to the username.
1588 This change corrects that bug.
1590 GF/01 DCC debug and logging tidyup
1591 Error conditions log to paniclog rather than rejectlog.
1592 Debug lines prefixed by "DCC: " to remove any ambiguity.
1594 TF/03 Avoid unnecessary rebuilds of lookup-related code.
1596 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1597 Bug spotted by Jeremy Harris; was flawed since initial commit.
1598 Would have resulted in OCSP responses post-SNI triggering an Exim
1599 NULL dereference and crash.
1601 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1603 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1604 Bug detection, analysis and fix by Samuel Thibault.
1605 Bugzilla 1331, Debian bug #698092.
1607 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1609 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1610 Server implementation by Todd Lyons, client by JH.
1611 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1612 config variable "prdr_enable" controls whether the server
1613 advertises the facility. If the client requests PRDR a new
1614 acl_data_smtp_prdr ACL is called once for each recipient, after
1615 the body content is received and before the acl_smtp_data ACL.
1616 The client is controlled by both of: a hosts_try_prdr option
1617 on the smtp transport, and the server advertisement.
1618 Default client logging of deliveries and rejections involving
1619 PRDR are flagged with the string "PRDR".
1621 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1622 fclose(). Diagnosis by Todd Lyons.
1624 PP/17 Update configure.default to handle IPv6 localhost better.
1625 Patch by Alain Williams (plus minor tweaks).
1628 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1629 This is now consistent with GnuTLS, and is now documented: the
1630 previous undocumented portable approach to treating the option as
1631 unset was to force an expansion failure. That still works, and
1632 an empty string is now equivalent.
1634 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1635 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1636 not performing validation itself.
1638 PP/20 Added force_command boolean option to pipe transport.
1639 Patch from Nick Koston, of cPanel Inc.
1641 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1644 TF/04 Added udpsend ACL modifier and hexquote expansion operator
1646 PP/21 Fix eximon continuous updating with timestamped log-files.
1647 Broken in a format-string cleanup in 4.80, missed when I repaired the
1648 other false fix of the same issue.
1649 Report and fix from Heiko Schlichting.
1652 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1653 Report from Prashanth Katuri.
1655 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1656 It's SecureTransport, so affects any MacOS clients which use the
1657 system-integrated TLS libraries, including email clients.
1659 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1660 using a MIME ACL for non-SMTP local injection.
1661 Report and assistance in diagnosis by Warren Baker.
1663 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1665 JH/16 Fix comparisons for 64b. Bugzilla 1385.
1667 TL/09 Add expansion variable $authenticated_fail_id to keep track of
1668 last id that failed so it may be referenced in subsequent ACL's.
1670 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1673 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1674 ldap library initialization, allowing self-signed CA's to be
1675 used. Also properly sets require_cert option later in code by
1676 using NULL (global ldap config) instead of ldap handle (per
1677 session). Bug diagnosis and testing by alxgomz.
1679 TL/12 Enhanced documentation in the ratelimit.pl script provided in
1680 the src/util/ subdirectory.
1682 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1683 renamed to Transport Post Delivery Action by Jeremy Harris, as
1686 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1687 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1688 redis_servers = needs to be configured which will be used by the redis
1689 lookup. Patch from Warren Baker, of The Packet Hub.
1691 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1693 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1694 hostname or reverse DNS when processing a host list. Used suggestions
1695 from multiple comments on this bug.
1697 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1699 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1700 Missed a few lines, added it to make the runtest require no keyboard
1703 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1704 contains upper case chars. Make router use caseful_local_part.
1706 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1707 support when GnuTLS has been built with p11-kit.
1713 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1715 This, or similar/improved, will also be change PP/11 of 4.82.
1721 PP/01 Handle short writes when writing local log-files.
1722 In practice, only affects FreeBSD (8 onwards).
1723 Bugzilla 1053, with thanks to Dmitry Isaikin.
1725 NM/01 Bugzilla 949 - Documentation tweak
1727 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1730 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1732 PP/02 Implemented gsasl authenticator.
1734 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1736 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1737 `pkg-config foo` for cflags/libs.
1739 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1740 with rest of GSASL and with heimdal_gssapi.
1742 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1743 `pkg-config foo` for cflags/libs for the TLS implementation.
1745 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
1746 properties get this fed in as external SSF. A number of robustness
1747 and debugging improvements to the cyrus_sasl authenticator.
1749 PP/08 cyrus_sasl server now expands the server_realm option.
1751 PP/09 Bugzilla 1214 - Log authentication information in reject log.
1752 Patch by Jeremy Harris.
1754 PP/10 Added dbmjz lookup type.
1756 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
1758 PP/12 MAIL args handles TAB as well as SP, for better interop with
1759 non-compliant senders.
1760 Analysis and variant patch by Todd Lyons.
1762 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
1763 Bug report from Lars Müller <lars@samba.org> (via SUSE),
1764 Patch from Dirk Mueller <dmueller@suse.com>
1766 PP/13 tls_peerdn now print-escaped for spool files.
1767 Observed some $tls_peerdn in wild which contained \n, which resulted
1768 in spool file corruption.
1770 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1771 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1772 or write after TLS renegotiation, which otherwise led to messages
1775 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1776 as a tracking header (ie: a signed header comes before the signature).
1777 Patch from Wolfgang Breyha.
1779 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1780 comma-sep list; embedded commas doubled.
1782 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1784 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1786 Report and patch from Dmitry Banschikov.
1788 PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
1789 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1790 failures. We appear to now support TLS1.1+ with Exim.
1792 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1793 lets Exim select keys and certificates based upon TLS SNI from client.
1794 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1795 before an outbound SMTP session. New log_selector, +tls_sni.
1797 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1798 NULL dereference. Report and patch from Alun Jones.
1800 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1801 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1802 Not seeing resolver debug output on NetBSD, but suspect this is a
1803 resolver implementation change.
1805 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1806 Left warnings. Added "eximon gdb" invocation mode.
1808 PP/21 Defaulting "accept_8bitmime" to true, not false.
1810 PP/22 Added -bw for inetd wait mode support.
1812 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1813 locate the relevant includes and libraries. Made this the default.
1815 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1816 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1818 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
1819 This may cause build issues on older platforms.
1821 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1822 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1823 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1824 Added SNI support via GnuTLS too.
1825 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
1827 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
1829 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
1830 Applied second patch from Janne, implementing suggestion to default
1831 multiple-strings-in-record handling to match SPF spec.
1833 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
1835 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1836 read-only, out of scope).
1837 Patch from Wolfgang Breyha, report from Stuart Northfield.
1839 PP/29 Fix three issues highlighted by clang analyser static analysis.
1840 Only crash-plausible issue would require the Cambridge-specific
1841 iplookup router and a misconfiguration.
1842 Report from Marcin Mirosław.
1844 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1846 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1847 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1848 As part of this, removing so much warning spew let me fix some minor
1849 real issues in debug logging.
1851 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1852 assignment on my part. Fixed.
1854 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1855 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1856 Janne Snabb (who went above and beyond: thank you).
1858 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1859 string otherwise requires a connection and a bunch more work and it's
1860 relatively easy to get wrong. Should also expose TLS library linkage
1863 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1864 64-bit ${eval} (JH/03).
1866 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
1867 GNU libc to support some of the 64-bit stuff, should not lead to
1868 conflicts. Defined before os.h is pulled in, so if a given platform
1869 needs to override this, it can.
1871 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1872 protection layer was required, which is not implemented.
1873 Bugzilla 1254, patch from Wolfgang Breyha.
1875 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1876 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1877 tls_dhparam take prime identifiers. Also unbreak combination of
1878 OpenSSL+DH_params+TLSSNI.
1880 PP/39 Disable SSLv2 by default in OpenSSL support.
1886 PP/01 Solaris build fix for Oracle's LDAP libraries.
1887 Bugzilla 1109, patch from Stephen Usher.
1889 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1891 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1894 TF/02 Fix a couple more cases where we did not log the error message
1895 when unlink() failed. See also change 4.74-TF/03.
1897 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1898 lock up or crash if it happened to be inside a call to libc when it
1899 got a SIGUSR1 from exiwhat.
1901 The SIGUSR1 handler appends the current process status to the process
1902 log which is later printed by exiwhat. It used to use the general
1903 purpose logging code to do this, but several functions it calls are
1904 not safe for signals.
1906 The new output code in the SIGUSR1 handler is specific to the process
1907 log, and simple enough that it's easy to inspect for signal safety.
1908 Removing some special cases also simplifies the general logging code.
1909 Removing the spurious timestamps from the process log simplifies
1912 TF/04 Improved ratelimit ACL condition.
1914 The /noupdate option has been deprecated in favour of /readonly which
1915 has clearer semantics. The /leaky, /strict, and /readonly update modes
1916 are mutually exclusive. The update mode is no longer included in the
1917 database key; it just determines when the database is updated. (This
1918 means that when you upgrade Exim will forget old rate measurements.)
1920 Exim now checks that the per_* options are used with an update mode that
1921 makes sense for the current ACL. For example, when Exim is processing a
1922 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1923 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1924 must specify per_mail/readonly. If you omit the update mode it defaults to
1925 /leaky where that makes sense (as before) or /readonly where required.
1927 The /noupdate option is now undocumented but still supported for
1928 backwards compatibility. It is equivalent to /readonly except that in
1929 ACLs where /readonly is required you may specify /leaky/noupdate or
1930 /strict/noupdate which are treated the same as /readonly.
1932 A useful new feature is the /count= option. This is a generalization
1933 of the per_byte option, so that you can measure the throughput of other
1934 aggregate values. For example, the per_byte option is now equivalent
1935 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1937 The per_rcpt option has been generalized using the /count= mechanism
1938 (though it's more complicated than the per_byte equivalence). When it is
1939 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1940 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1941 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1942 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1943 Note that using per_rcpt with a non-readonly update mode in more than
1944 one ACL will cause the recipients to be double-counted. (The per_mail
1945 and per_byte options don't have this problem.)
1947 The handling of very low rates has changed slightly. If the computed rate
1948 is less than the event's count (usually one) then this event is the first
1949 after a long gap. In this case the rate is set to the same as this event's
1950 count, so that the first message of a spam run is counted properly.
1952 The major new feature is a mechanism for counting the rate of unique
1953 events. The new per_addr option counts the number of different
1954 recipients that someone has sent messages to in the last time period. It
1955 behaves like per_rcpt if all the recipient addresses are different, but
1956 duplicate recipient addresses do not increase the measured rate. Like
1957 the /count= option this is a general mechanism, so the per_addr option
1958 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1959 example, measure the rate that a client uses different sender addresses
1960 with the options per_mail/unique=$sender_address. There are further
1961 details in the main documentation.
1963 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1965 TF/06 Removed a few PCRE remnants.
1967 TF/07 Automatically extract Exim's version number from tags in the git
1968 repository when doing development or release builds.
1970 PP/02 Raise smtp_cmd_buffer_size to 16kB.
1971 Bugzilla 879. Patch from Paul Fisher.
1973 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1974 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1977 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
1979 PP/05 Variable $av_failed, true if the AV scanner deferred.
1980 Bugzilla 1078. Patch from John Horne.
1982 PP/06 Stop make process more reliably on build failure.
1983 Bugzilla 1087. Patch from Heiko Schlittermann.
1985 PP/07 Make maildir_use_size_file an _expandable_ boolean.
1986 Bugzilla 1089. Patch from Heiko Schlittermann.
1988 PP/08 Handle ${run} returning more data than OS pipe buffer size.
1989 Bugzilla 1131. Patch from Holger Weiß.
1991 PP/09 Handle IPv6 addresses with SPF.
1992 Bugzilla 860. Patch from Wolfgang Breyha.
1994 PP/10 GnuTLS: support TLS 1.2 & 1.1.
1996 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1999 PP/11 match_* no longer expand right-hand-side by default.
2000 New compile-time build option, EXPAND_LISTMATCH_RHS.
2001 New expansion conditions, "inlist", "inlisti".
2003 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
2005 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
2007 PP/14 fix log_write() format string regression from TF/03.
2008 Bugzilla 1152. Patch from Dmitry Isaikin.
2014 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
2016 PP/02 Harmonised TLS library version reporting; only show if debugging.
2017 Layout now matches that introduced for other libraries in 4.74 PP/03.
2019 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
2021 PP/04 New "dns_use_edns0" global option.
2023 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2026 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2027 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
2029 TK/01 Updated PolarSSL code to 0.14.2.
2030 Bugzilla 1097. Patch from Andreas Metzler.
2032 PP/07 Catch divide-by-zero in ${eval:...}.
2033 Fixes bugzilla 1102.
2035 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2038 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
2039 format-string attack -- SECURITY: remote arbitrary code execution.
2041 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2042 time unintentionally subject to list matching rules, letting the header
2043 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2044 arbitrary string expansion). This allowed for information disclosure.
2046 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2047 INT_MIN/-1 -- value coerced to INT_MAX.
2053 NM/01 Workaround for PCRE version dependency in version reporting
2056 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2057 This fixes portability to compilers other than gcc, notably
2058 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2060 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2061 makefiles for portability to HP-UX and POSIX correctness.
2063 PP/01 Permit LOOKUP_foo enabling on the make command-line.
2064 Also via indented variable definition in the Makefile.
2065 (Debugging by Oliver Heesakkers).
2067 PP/02 Restore caching of spamd results with expanded spamd_address.
2068 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2070 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2071 Improves build reliability. Fix from: Frank Elsner
2073 NM/02 Fix wide character breakage in the rfc2047 coding
2074 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2076 NM/03 Allow underscore in dnslist lookups
2077 Fixes bug 1026. Patch from Graeme Fowler
2079 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2080 Code patches from Adam Ciarcinski of NetBSD.
2082 NM/04 Fixed exiqgrep to cope with mailq missing size issue
2085 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2086 is logged, to avoid truncation. Patch from John Horne.
2088 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2089 Patch from Jakob Hirsch.
2091 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2092 SQL string expansion failure details.
2093 Patch from Andrey Oktyabrski.
2095 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2096 Patch from Simon Arlott.
2098 PP/09 New lookups functionality failed to compile on old gcc which rejects
2099 extern declarations in function scope.
2100 Patch from Oliver Fleischmann
2102 PP/10 Use sig_atomic_t for flags set from signal handlers.
2103 Check getgroups() return and improve debugging.
2104 Fixed developed for diagnosis in bug 927 (which turned out to be
2107 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2108 Patch from Mark Zealey.
2110 PP/12 Bugzilla 1056: Improved spamd server selection.
2111 Patch from Mark Zealey.
2113 PP/13 Bugzilla 1086: Deal with maildir quota file races.
2114 Based on patch from Heiko Schlittermann.
2116 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2117 Patch from Uwe Doering, sign-off by Michael Haardt.
2119 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2120 variable declaration deep within a block. Bug and patch from
2123 PP/15 lookups-Makefile IRIX compatibility coercion.
2125 PP/16 Make DISABLE_DKIM build knob functional.
2127 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2128 Patch by Simon Arlott
2130 TF/03 Fix valgrind.h portability to C89 compilers that do not support
2131 variable argument macros. Our copy now differs from upstream.
2137 TF/01 Failure to get a lock on a hints database can have serious
2138 consequences so log it to the panic log.
2140 TF/02 Log LMTP confirmation messages in the same way as SMTP,
2141 controlled using the smtp_confirmation log selector.
2143 TF/03 Include the error message when we fail to unlink a spool file.
2145 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2146 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2147 for maintaining out-of-tree patches for some time.
2149 PP/01 Bugzilla 139: Documentation and portability issues.
2150 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2151 Handle per-OS dynamic-module compilation flags.
2153 PP/02 Let /dev/null have normal permissions.
2154 The 4.73 fixes were a little too stringent and complained about the
2155 permissions on /dev/null. Exempt it from some checks.
2156 Reported by Andreas M. Kirchwitz.
2158 PP/03 Report version information for many libraries, including
2159 Exim version information for dynamically loaded libraries. Created
2160 version.h, now support a version extension string for distributors
2161 who patch heavily. Dynamic module ABI change.
2163 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2164 privilege escalation vulnerability whereby the Exim run-time user
2165 can cause root to append content of the attacker's choosing to
2168 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2171 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2172 If dropping privileges for untrusted macros, we disabled normal logging
2173 on the basis that it would fail; for the Exim run-time user, this is not
2174 the case, and it resulted in successful deliveries going unlogged.
2175 Fixed. Reported by Andreas Metzler.
2181 PP/01 Date: & Message-Id: revert to normally being appended to a message,
2182 only prepend for the Resent-* case. Fixes regression introduced in
2183 Exim 4.70 by NM/22 for Bugzilla 607.
2185 PP/02 Include check_rfc2047_length in configure.default because we're seeing
2186 increasing numbers of administrators be bitten by this.
2188 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2190 PP/03 Bugzilla 994: added openssl_options main configuration option.
2192 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2194 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
2196 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2198 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
2199 without a peer certificate, leading to a segfault because of an
2200 assumption that peers always have certificates. Be a little more
2201 paranoid. Problem reported by Martin Tscholak.
2203 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2204 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2205 NB: ClamAV planning to remove STREAM in "middle of 2010".
2206 CL also introduces -bmalware, various -d+acl logging additions and
2207 more caution in buffer sizes.
2209 PP/09 Implemented reverse_ip expansion operator.
2211 PP/10 Bugzilla 937: provide a "debug" ACL control.
2213 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2215 PP/12 Bugzilla 973: Implement --version.
2217 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2219 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2221 PP/15 Bugzilla 816: support multiple condition rules on Routers.
2223 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
2224 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2225 ignore trailing whitespace.
2227 JJ/02 prevent non-panic DKIM error from being sent to paniclog
2229 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2232 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2233 Notification from Dr Andrew Aitchison.
2235 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2236 ExtendedDetectionInfo response format.
2237 Notification from John Horne.
2239 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2242 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2243 XSL and documented dependency on system catalogs, with examples of how
2246 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2249 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2250 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2251 configuration file which is writeable by the Exim user or group.
2253 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2254 of configuration files to cover files specified with the -C option if
2255 they are going to be used with root privileges, not just the default
2258 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2259 option (effectively making it always true).
2261 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2262 files to be used while preserving root privileges.
2264 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2265 that rogue child processes cannot use them.
2267 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2268 run-time user, instead of root.
2270 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2271 Exim run-time user without dropping privileges.
2273 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2274 result string, instead of calling string_vformat() twice with the same
2277 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2278 for other users. Others should always drop root privileges if they use
2279 -C on the command line, even for a whitelisted configure file.
2281 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2283 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2289 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2290 $data_path, and $header_path variables; fixed documentation bugs and
2293 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2294 exipick to access non-standard spools, including the "frozen" queue
2297 NM/01 Bugzilla 965: Support mysql stored procedures.
2298 Patch from Alain Williams
2300 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2302 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2303 Patch from Andreas Metzler
2305 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2306 Patch from Kirill Miazine
2308 NM/05 Bugzilla 671: Added umask to procmail example.
2310 JJ/03 installed exipick 20100323.0, fixing doc bug
2312 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
2313 directory. Notification and patch from Dan Rosenberg.
2315 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2317 TK/02 Improve log output when DKIM signing operation fails.
2319 MH/01 Treat the transport option dkim_domain as a colon separated
2320 list, not as a single string, and sign the message with each element,
2321 omitting multiple occurences of the same signer.
2323 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2324 Bugzilla 985, 986. Patch by Simon Arlott
2326 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
2327 Patch by Simon Arlott
2329 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
2330 MBX locking. Notification from Dan Rosenberg.
2336 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
2338 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2340 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2342 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2344 NM/04 Bugzilla 915: Flag broken perl installation during build.
2350 TK/01 Added patch by Johannes Berg that expands the main option
2351 "spamd_address" if it starts with a dollar sign.
2353 TK/02 Write list of recipients to X-Envelope-Sender header when building
2354 the mbox-format spool file for content scanning (suggested by Jakob
2357 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2358 (http://www.dcc-servers.net/) support via dccifd. Activated by
2359 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
2361 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2362 by Mark Daniel Reidel <mr@df.eu>.
2364 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2365 When building exim an external PCRE library is now needed -
2366 PCRE is a system library on the majority of modern systems.
2367 See entry on PCRE_LIBS in EDITME file.
2369 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2370 conversation. Added nologin parameter to request.
2371 Patch contributed by Kirill Miazine.
2373 TF/01 Do not log submission mode rewrites if they do not change the address.
2375 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2377 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
2378 log files in place. Contributed by Roberto Lima.
2380 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
2382 TF/03 Bugzilla 615: When checking the local_parts router precondition
2383 after a local_part_suffix or local_part_prefix option, Exim now
2384 does not use the address's named list lookup cache, since this
2385 contains cached lookups for the whole local part.
2387 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
2388 Robert Millan. Documentation is in experimental-spec.txt.
2390 TF/04 Bugzilla 668: Fix parallel build (make -j).
2392 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
2394 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
2395 Patch provided by Jan Srzednicki.
2397 TF/05 Leading white space used to be stripped from $spam_report which
2398 wrecked the formatting. Now it is preserved.
2400 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2401 that they are available at delivery time.
2403 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2405 TF/08 TLS error reporting now respects the incoming_interface and
2406 incoming_port log selectors.
2408 TF/09 Produce a more useful error message if an SMTP transport's hosts
2409 setting expands to an empty string.
2411 NM/06 Bugzilla 744: EXPN did not work under TLS.
2412 Patch provided by Phil Pennock.
2414 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
2415 Patch provided by Richard Godbee.
2417 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
2418 acl_smtp_notquit, added index entry.
2420 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2421 Patch provided by Eugene Bujak.
2423 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2424 accept(). Patch provided by Maxim Dounin.
2426 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
2427 Patch provided by Phil Pennock.
2429 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2431 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
2432 Patch provided by Brad "anomie" Jorsch.
2434 NM/14 Bugzilla 622: Added timeout setting to transport filter.
2435 Patch provided by Dean Brooks.
2437 TK/05 Add native DKIM support (does not depend on external libraries).
2439 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
2440 Patch provided by Graeme Fowler.
2442 NM/16 Bugzilla 851: Documentation example syntax fix.
2444 NM/17 Changed NOTICE file to remove references to embedded PCRE.
2446 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2449 NM/19 Bugzilla 745: TLS version reporting.
2450 Patch provided by Phil Pennock.
2452 NM/20 Bugzilla 167: bool: condition support.
2453 Patch provided by Phil Pennock.
2455 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2456 clients. Patch provided by Phil Pennock.
2458 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2459 Patch provided by Brad "anomie" Jorsch.
2461 NM/23 Bugzilla 687: Fix misparses in eximstats.
2462 Patch provided by Heiko Schlittermann.
2464 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2465 Patch provided by Heiko Schlittermann.
2467 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
2468 plus update to original patch.
2470 NM/26 Bugzilla 799: Documentation correction for ratelimit.
2472 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2473 Patch provided by David Brownlee.
2475 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
2477 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
2479 NM/30 Bugzilla 888: TLS documentation bugfixes.
2481 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
2483 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
2484 Unlike the original bugzilla I have changed all shell scripts in src tree.
2486 NM/33 Bugzilla 898: Transport filter timeout fix.
2487 Patch by Todd Rinaldo.
2489 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
2490 Patch by Serge Demonchaux.
2492 NM/35 Bugzilla 39: Base64 decode bug fixes.
2493 Patch by Jakob Hirsch.
2495 NM/36 Bugzilla 909: Correct connect() call in dcc code.
2497 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
2499 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
2501 NM/39 Bugzilla 911: Fixed MakeLinks build script.
2507 TK/01 Add preliminary DKIM support. Currently requires a forked version of
2508 ALT-N's libdkim that I have put here:
2509 http://duncanthrax.net/exim-experimental/
2511 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2512 were called 'true' and it seems that C99 defines that as a reserved
2513 keyword to be used with 'bool' variable types. That means you could
2514 not include C99-style headers which use bools without triggering
2515 build errors in sieve.c.
2517 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2518 as mailq or other aliases. Changed the --help handling significantly
2519 to do whats expected. exim_usage() emits usage/help information.
2521 SC/01 Added the -bylocaldomain option to eximstats.
2523 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
2525 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
2527 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
2533 PH/01 Another patch from the Sieve maintainer.
2535 PH/02 When an IPv6 address is converted to a string for single-key lookup
2536 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2537 dots are used instead of colons so that keys in lsearch files need not
2538 contain colons. This was done some time before quoting was made available
2539 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2540 (notated using the quote facility) so as to distinguish them from IPv4
2541 keys. This meant that lookups for IP addresses in host lists did not work
2542 for iplsearch lookups.
2544 This has been fixed by arranging for IPv6 addresses to be expressed with
2545 colons if the lookup type is iplsearch. This is not incompatible, because
2546 previously such lookups could never work.
2548 The situation is now rather anomalous, since one *can* have colons in
2549 ordinary lsearch keys. However, making the change in all cases is
2550 incompatible and would probably break a number of configurations.
2552 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2555 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2556 conversion specification without a maximum field width, thereby enabling
2557 a rogue spamd server to cause a buffer overflow. While nobody in their
2558 right mind would setup Exim to query an untrusted spamd server, an
2559 attacker that gains access to a server running spamd could potentially
2560 exploit this vulnerability to run arbitrary code as the Exim user.
2562 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2563 $primary_hostname instead of what libspf2 thinks the hosts name is.
2565 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2566 a directory entry by the name of the lookup key. Previously, if a
2567 symlink pointed to a non-existing file or a file in a directory that
2568 Exim lacked permissions to read, a lookup for a key matching that
2569 symlink would fail. Now it is enough that a matching directory entry
2570 exists, symlink or not. (Bugzilla 503.)
2572 PH/03 The body_linecount and body_zerocount variables are now exported in the
2575 PH/04 Added the $dnslist_matched variable.
2577 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2578 This means they are set thereafter only if the connection becomes
2581 PH/06 Added the client_condition to authenticators so that some can be skipped
2582 by clients under certain conditions.
2584 PH/07 The error message for a badly-placed control=no_multiline_responses left
2585 "_responses" off the end of the name.
2587 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2589 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2590 (without spaces) instead of just copying the configuration text.
2592 PH/10 Added the /noupdate option to the ratelimit ACL condition.
2594 PH/11 Added $max_received_linelength.
2596 PH/12 Added +ignore_defer and +include_defer to host lists.
2598 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2599 way in which PCRE > 7.0 is built.
2601 PH/14 Implemented queue_only_load_latch.
2603 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2604 MAIL command. The effect was to mangle the value on 64-bit systems.
2606 PH/16 Another patch from the Sieve maintainer.
2608 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2610 PH/18 If a system quota error occurred while trying to create the file for
2611 a maildir delivery, the message "Mailbox is full" was not appended to the
2612 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2613 only to a quota excession during the actual writing of the file.
2615 PH/19 It seems that peer DN values may contain newlines (and other non-printing
2616 characters?) which causes problems in log lines. The DN values are now
2617 passed through string_printing() before being added to log lines.
2619 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
2620 and InterBase are left for another time.)
2622 PH/21 Added message_body_newlines option.
2624 PH/22 Guard against possible overflow in moan_check_errorcopy().
2626 PH/23 POSIX allows open() to be a macro; guard against that.
2628 PH/24 If the recipient of an error message contained an @ in the local part
2629 (suitably quoted, of course), incorrect values were put in $domain and
2630 $local_part during the evaluation of errors_copy.
2636 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2637 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2640 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2641 issue a MAIL command.
2643 PH/02 In an ACL statement such as
2645 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2647 if a client was not listed at all, or was listed with a value other than
2648 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2649 the condition was not true (as it should be), so access was not denied.
2650 The bug was that the ! inversion was incorrectly passed on to the second
2651 item. This has been fixed.
2653 PH/03 Added additional dnslists conditions == and =& which are different from
2654 = and & when the dns lookup returns more than one IP address.
2656 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2657 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2659 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2660 FSYNC, which compiles an option called disable_fsync that allows for
2661 bypassing fsync(). The documentation is heavily laced with warnings.
2663 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2665 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2666 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2667 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2668 including adding "make clean"; (3) Added -fPIC when compiling the test
2669 dynamically loaded module, to get rid of a warning.
2671 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2672 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2673 = 0s. The bug is otherwise harmless.
2675 PH/07 There was a bug in the dovecot authenticator such that the value of
2676 $auth1 could be overwritten, and so not correctly preserved, after a
2677 successful authentication. This usually meant that the value preserved by
2678 the server_setid option was incorrect.
2680 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2682 PH/09 Installed PCRE release 7.0.
2684 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2685 run for batched SMTP input. It is now run at the start of every message
2686 in the batch. While fixing this I discovered that the process information
2687 (output by running exiwhat) was not always getting set for -bs and -bS
2688 input. This is fixed, and it now also says "batched" for BSMTP.
2690 PH/11 Added control=no_pipelining.
2692 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2693 patch, slightly modified), and move the expansion of helo_data till after
2694 the connection is made in the smtp transport (so it can use these
2697 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2699 PH/14 Added log_selector = +pid.
2701 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2703 PH/16 Add ${if forany and ${if forall.
2705 PH/17 Added dsn_from option to vary the From: line in DSNs.
2707 PH/18 Flush SMTP output before performing a callout, unless control =
2708 no_callout_flush is set.
2710 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2711 was true (the default) a successful delivery failed to delete the retry
2712 item, thus causing premature timeout of the address. The bug is now
2715 PH/20 Added hosts_avoid_pipelining to the smtp transport.
2717 PH/21 Long custom messages for fakedefer and fakereject are now split up
2718 into multiline responses in the same way that messages for "deny" and
2719 other ACL rejections are.
2721 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2722 with slight modification.
2724 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2725 draft, changing the syntax and factoring some duplicate code".
2727 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2728 for deliveries of the second and subsequent messages over the same SMTP
2731 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2732 ${reduce, with only minor "tidies".
2734 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2736 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2737 expansion side effects.
2739 PH/27 When a message times out after an over-quota error from an Exim-imposed
2740 quota, the bounce message says "mailbox is full". This message was not
2741 being given when it was a system quota that was exceeded. It now should
2744 MH/03 Made $recipients available in local_scan(). local_scan() already has
2745 better access to the recipient list through recipients_list[], but
2746 $recipients can be useful in postmaster-provided expansion strings.
2748 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2749 in the case of a MAIL command with additional options following the
2750 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2751 were accidentally chopped off.
2753 PH/29 SMTP synchronization checks are implemented when a command is read -
2754 there is a check that no more input is waiting when there shouldn't be
2755 any. However, for some commands, a delay in an ACL can mean that it is
2756 some time before the response is written. In this time, more input might
2757 arrive, invalidly. So now there are extra checks after an ACL has run for
2758 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2759 pipelining has not been advertised.
2761 PH/30 MH's patch to allow iscntrl() characters to be list separators.
2763 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2764 returned in the SMTP response when smtp_return_error_details was false.
2765 This has been fixed.
2767 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2768 instead of the C I/O that was originally supplied, because problems were
2769 reported on Solaris.
2771 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2772 Exim which did not show up earlier: it was assuming that a call to
2773 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2774 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2775 was a macro that became an assignment, so it seemed to work. This has
2776 changed to a proper function call with a void return, hence the compile
2777 error. Exim's code has been fixed.
2779 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2782 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2784 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2786 PH/37 If a message is not accepted after it has had an id assigned (e.g.
2787 because it turns out to be too big or there is a timeout) there is no
2788 "Completed" line in the log. When some messages of this type were
2789 selected by exigrep, they were listed as "not completed". Others were
2790 picked up by some special patterns. I have improved the selection
2791 criteria to be more general.
2793 PH/38 The host_find_failed option in the manualroute router can now be set
2794 to "ignore", to completely ignore a host whose IP address cannot be
2795 found. If all hosts are ignored, the behaviour is controlled by the new
2796 host_all_ignored option.
2798 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2799 homing or because of multiple MX records with /mx) generated more than
2800 one IP address, and the following item turned out to be the local host,
2801 all the secondary addresses of the first item were incorrectly removed
2802 from the list, along with the local host and any following hosts (which
2803 is what is supposed to happen).
2805 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2806 whoever called Exim into the -H file. In the case of the daemon it was
2807 behaving confusingly. When first started, it used values for whoever
2808 started the daemon, but after a SIGHUP it used the Exim user (because it
2809 calls itself on a restart). I have changed the code so that it now always
2812 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2813 message are rejected with the same error (e.g. no authentication or bad
2814 sender address), and a DATA command is nevertheless sent (as can happen
2815 with PIPELINING or a stupid MUA), the error message that was given to the
2816 RCPT commands is included in the rejection of the DATA command. This is
2817 intended to be helpful for MUAs that show only the final error to their
2820 PH/42 Another patch from the Sieve maintainer.
2822 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2823 Eximstats - Fixed some broken HTML links and added missing column headers
2825 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2826 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2828 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2830 PH/43 Yet another patch from the Sieve maintainer.
2832 PH/44 I found a way to check for a TCP/IP connection going away before sending
2833 the response to the final '.' that terminates a message, but only in the
2834 case where the client has not sent further data following the '.'
2835 (unfortunately, this is allowed). However, in many cases there won't be
2836 any further data because there won't be any more messages to send. A call
2837 to select() can be used: if it shows that the input is "ready", there is
2838 either input waiting, or the socket has been closed. An attempt to read
2839 the next input character can distinguish the two cases. Previously, Exim
2840 would have sent an OK response which the client would never have see.
2841 This could lead to message repetition. This fix should cure that, at
2842 least in a lot of common cases.
2844 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2845 advertised in response to EHLO.
2851 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2852 fixed by 4.65/MH/01 (is this a record?) are fixed:
2854 (i) An empty string was always treated as zero by the numeric comparison
2855 operators. This behaviour has been restored.
2857 (ii) It is documented that the numeric comparison operators always treat
2858 their arguments as decimal numbers. This was broken in that numbers
2859 starting with 0 were being interpreted as octal.
2861 While fixing these problems I realized that there was another issue that
2862 hadn't been noticed. Values of message_size_limit (both the global option
2863 and the transport option) were treated as octal if they started with 0.
2864 The documentation was vague. These values are now always treated as
2865 decimal, and I will make that clear in the documentation.
2871 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2872 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2875 MH/01 Don't check that the operands of numeric comparison operators are
2876 integers when their expansion is in "skipping" mode (fixes bug
2877 introduced by 4.64-PH/07).
2879 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2880 child addresses, Exim now panics and dies. Previously, because the count
2881 is held in a short int, deliveries were likely to be lost. As such a
2882 large number of recipients for a single message is ridiculous
2883 (performance will be very, very poor), I have chosen to impose a limit
2884 rather than extend the field.
2890 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2891 leftover -K file (the existence of which was triggered by #402).
2892 While we were at it, introduced process PID as part of the -K
2893 filename. This should rule out race conditions when creating
2896 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2897 processing considerably. Previous code took too long for large mails,
2898 triggering a timeout which in turn triggers #401.
2900 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2901 in the DK code in transports.c. sendfile() is not really portable,
2902 hence the _LINUX specificness.
2904 TF/01 In the add_headers option to the mail command in an Exim filter,
2905 there was a bug that Exim would claim a syntax error in any
2906 header after the first one which had an odd number of characters
2909 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2910 callout verification, Exim cached a "reject" for the entire domain. This
2911 is correct for most verifications, but it is not correct for a recipient
2912 verification with use_sender or use_postmaster set, because in that case
2913 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2914 case of MAIL FROM:<> rejection from other early rejections (e.g.
2915 rejection of HELO). When verifying a recipient using a non-null MAIL
2916 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2917 Whatever the result of the callout, the value of the domain cache is
2918 left unchanged (for any other kind of callout, getting as far as trying
2919 RCPT means that the domain itself is ok).
2921 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2924 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2925 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2926 session, the daemon ignores ECONNECT errors and logs others; it now
2927 ignores EPIPE as well.
2929 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2930 (quoted-printable decoding).
2932 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
2933 later the small subsequent patch to fix an introduced bug.
2935 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2937 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2939 PH/08 An error is now given if message_size_limit is specified negative.
2941 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
2942 to be given (somewhat) arbitrary names.
2944 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2947 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2948 miscellaneous code fixes
2950 PH/10 Added the log_reject_target ACL modifier to specify where to log
2953 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2954 hostname. This is wrong, because it relates to the incoming message (and
2955 probably the interface on which it is arriving) and not to the outgoing
2956 callout (which could be using a different interface). This has been
2957 changed to use the value of the helo_data option from the smtp transport
2958 instead - this is what is used when a message is actually being sent. If
2959 there is no remote transport (possible with a router that sets up host
2960 addresses), $smtp_active_hostname is used.
2962 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
2963 tweaks were necessary in order to get it to work (see also 21 below):
2964 (a) The code assumed that strncpy() returns a negative number on buffer
2965 overflow, which isn't the case. Replaced with Exim's string_format()
2967 (b) There were several signed/unsigned issues. I just did the minimum
2968 hacking in of casts. There is scope for a larger refactoring.
2969 (c) The code used strcasecmp() which is not a standard C function.
2970 Replaced with Exim's strcmpic() function.
2971 (d) The code set only $1; it now sets $auth1 as well.
2972 (e) A simple test gave the error "authentication client didn't specify
2973 service in request". It would seem that Dovecot has changed its
2974 interface. Fortunately there's a specification; I followed it and
2975 changed what the client sends and it appears to be working now.
2977 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
2980 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
2981 address A is aliased to B and C, where B exists and C does not. Without
2982 -v the output is "A verified" because verification stops after a
2983 successful redirection if more than one address is generated. However,
2984 with -v the child addresses are also verified. Exim was outputting "A
2985 failed to verify" and then showing the successful verification for C,
2986 with its parentage. It now outputs "B failed to verify", showing B's
2987 parentage before showing the successful verification of C.
2989 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
2990 look up a TXT record in a specific list after matching in a combined
2993 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2994 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2995 they consult the DNS. I had assumed they would set it the way they
2996 wanted; and indeed my experiments on Linux seem to show that in some
2997 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2998 To be on the safe side, however, I have now made the interface to
2999 host_find_byname() similar to host_find_bydns(), with an argument
3000 containing the DNS resolver options. The host_find_byname() function now
3001 sets these options at its start, just as host_find_bydns() does. The smtp
3002 transport options dns_qualify_single and dns_search_parents are passed to
3003 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
3004 of host_find_byname() use the default settings of RES_DEFNAMES
3005 (qualify_single) but not RES_DNSRCH (search_parents).
3007 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
3008 spool_read_header() do less string testing, by means of a preliminary
3009 switch on the second character of optional "-foo" lines. (This is
3010 overdue, caused by the large number of possibilities that now exist.
3011 Originally there were few.) While I was there, I also converted the
3012 str(n)cmp tests so they don't re-test the leading "-" and the first
3013 character, in the hope this might squeeze out yet more improvement.
3015 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
3016 flag allowing group syntax was set by the header_syntax check but not
3017 turned off, possible causing trouble later; (2) The flag was not being
3018 set at all for the header_verify test, causing "group"-style headers to
3019 be rejected. I have now set it in this case, and also caused header_
3020 verify to ignore an empty address taken from a group. While doing this, I
3021 came across some other cases where the code for allowing group syntax
3022 while scanning a header line wasn't quite right (mostly, not resetting
3023 the flag correctly in the right place). These bugs could have caused
3024 trouble for malformed header lines. I hope it is now all correct.
3026 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
3027 with the "reply" argument non-NULL. The code, however (which originally
3028 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
3029 but it didn't always do it. This confused somebody who was copying the
3030 code for some other use. I have removed all the tests.
3032 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
3033 feature that was used to support insecure browsers during the U.S. crypto
3034 embargo. It requires special client support, and Exim is probably the
3035 only MTA that supported it -- and would never use it because real RSA is
3036 always available. This code has been removed, because it had the bad
3037 effect of slowing Exim down by computing (never used) parameters for the
3038 RSA_EXPORT functionality.
3040 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
3041 authenticator to fail if there's a tab character in the incoming data
3042 (there should never be unless someone is messing about, as it's supposed
3043 to be base64-encoded). Also added, on Timo's advice, the "secured" option
3044 if the connection is using TLS or if the remote IP is the same as the
3045 local IP, and the "valid-client-cert option" if a client certificate has
3048 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
3049 authenticators. This can be used for authorization after authentication
3050 succeeds. (In the case of plaintext, it servers for both authentication
3053 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
3054 if any retry times were supplied.
3056 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
3057 connection, where there is no client IP address to check. In this
3058 situation, the verify now always succeeds.
3060 PH/25 Applied John Jetmore's -Mset patch.
3062 PH/26 Added -bem to be like -Mset, but loading a message from a file.
3064 PH/27 In a string expansion for a processed (not raw) header when multiple
3065 headers of the same name were present, leading whitespace was being
3066 removed from all of them, but trailing whitespace was being removed only
3067 from the last one. Now trailing whitespace is removed from each header
3068 before concatenation. Completely empty headers in a concatenation (as
3069 before) are ignored.
3071 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
3072 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
3074 PH/29 [Removed. This was a change that I later backed out, and forgot to
3075 correct the ChangeLog entry (that I had efficiently created) before
3076 committing the later change.]
3078 PH/30 Exim was sometimes attempting to deliver messages that had suffered
3079 address errors (4xx response to RCPT) over the same connection as other
3080 messages routed to the same hosts. Such deliveries are always "forced",
3081 so retry times are not inspected. This resulted in far too many retries
3082 for the affected addresses. The effect occurred only when there were more
3083 hosts than the hosts_max_try setting in the smtp transport when it had
3084 the 4xx errors. Those hosts that it had tried were not added to the list
3085 of hosts for which the message was waiting, so if all were tried, there
3086 was no problem. Two fixes have been applied:
3088 (i) If there are any address or message errors in an SMTP delivery, none
3089 of the hosts (tried or untried) are now added to the list of hosts
3090 for which the message is waiting, so the message should not be a
3091 candidate for sending over the same connection that was used for a
3092 successful delivery of some other message. This seems entirely
3093 reasonable: after all the message is NOT "waiting for some host".
3094 This is so "obvious" that I'm not sure why it wasn't done
3095 previously. Hope I haven't missed anything, but it can't do any
3096 harm, as the worst effect is to miss an optimization.
3098 (ii) If, despite (i), such a delivery is accidentally attempted, the
3099 routing retry time is respected, so at least it doesn't keep
3100 hammering the server.
3102 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
3103 in ${readsocket because some servers need this prod.
3105 PH/32 Added some extra debug output when updating a wait-xxx database.
3107 PH/33 The hint "could be header name not terminated by colon", which has been
3108 given for certain expansion errors for a long time, was not being given
3109 for the ${if def:h_colon_omitted{... case.
3111 PH/34 The spec says: "With one important exception, whenever a domain list is
3112 being scanned, $domain contains the subject domain." There was at least
3113 one case where this was not true.
3115 PH/35 The error "getsockname() failed: connection reset by peer" was being
3116 written to the panic log as well as the main log, but it isn't really
3117 panic-worthy as it just means the connection died rather early on. I have
3118 removed the panic log writing for the ECONNRESET error when getsockname()
3121 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
3122 runs only) independently of the message's sender address. This meant
3123 that, if the 4xx error was in fact related to the sender, a different
3124 message to the same recipient with a different sender could confuse
3125 things. In particular, this can happen when sending to a greylisting
3126 server, but other circumstances could also provoke similar problems.
3127 I have changed the default so that the retry time for these errors is now
3128 based a combination of the sender and recipient addresses. This change
3129 can be overridden by setting address_retry_include_sender=false in the
3132 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
3133 remote server are returned as part of bounce messages. This was not
3134 happening for LMTP over a pipe (the lmtp transport), but now it is the
3135 same for both kinds of LMTP.
3137 PH/38 Despite being documented as not happening, Exim was rewriting addresses
3138 in header lines that were in fact CNAMEs. This is no longer the case.
3140 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
3141 and queue runs started by the daemon processed all messages. This has
3142 been fixed so that -R and -S can now usefully be given with -q<time>.
3144 PH/40 Import PCRE release 6.7 (fixes some bugs).
3146 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
3148 PH/42 Give an error if -q is specified more than once.
3150 PH/43 Renamed the variables $interface_address and $interface_port as
3151 $received_ip_address and $received_port, to make it clear that these
3152 values apply to message reception, and not to the outgoing interface when
3153 a message is delivered. (The old names remain recognized, of course.)
3155 PH/44 There was no timeout on the connect() call when using a Unix domain
3156 socket in the ${readsocket expansion. There now is.
3158 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
3159 be meaningful with "accept".
3161 SC/01 Eximstats V1.43
3162 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
3164 SC/02 Eximstats V1.44
3165 Use a glob alias rather than an array ref in the generated
3166 parser. This improves both readability and performance.
3168 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
3169 Collect SpamAssassin and rejection statistics.
3170 Don't display local sender or destination tables unless
3171 there is data to show.
3172 Added average volumes into the top table text output.
3174 SC/04 Eximstats V1.46
3175 Collect data on the number of addresses (recipients)
3176 as well as the number of messages.
3178 SC/05 Eximstats V1.47
3179 Added 'Message too big' to the list of mail rejection
3180 reasons (thanks to Marco Gaiarin).
3182 SC/06 Eximstats V1.48
3183 Mainlog lines which have GMT offsets and are too short to
3184 have a flag are now skipped.
3186 SC/07 Eximstats V1.49 (Alain Williams)
3187 Added the -emptyok flag.
3189 SC/08 Eximstats V1.50
3190 Fixes for obtaining the IP address from reject messages.
3192 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
3193 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
3194 whitespace changes from 4.64-PH/27
3196 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
3199 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
3200 are found, allow negative numbers in numeric criteria)
3202 JJ/06 exipick.20061117.2, added new $message_body_missing variable
3204 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
3205 to match changes made in 4.64-PH/43
3207 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
3209 PH/47 Put in an explicit test for a DNS lookup of an address record where the
3210 "domain" is actually an IP address, and force a failure. This locks out
3211 those revolvers/nameservers that support "A-for-A" lookups, in
3212 contravention of the specifications.
3214 PH/48 When a host name was looked up from an IP address, and the subsequent
3215 forward lookup of the name timed out, the host name was left in
3216 $sender_host_name, contrary to the specification.
3218 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
3219 restricted to single-key lookups, Exim was not diagnosing an error if
3220 * or *@ was used with a query-style lookup.
3222 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
3224 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
3225 long ago, but noone interested enough thought of it. Let's just say that
3226 the "1.1" means that there are some new functions that weren't there at
3227 some point in the past.
3229 PH/51 Error processing for expansion failure of helo_data from an smtp
3230 transport during callout processing was broken.
3232 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
3233 tested/used via the -bh/-bhc/-bs options.
3235 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
3236 bug, fixed in subsequent PCRE releases).
3238 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
3239 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
3241 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
3247 SC/01 Use a glob alias rather than an array ref in eximstats generated
3248 parser. This improves both readability and performance.
3250 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
3251 Don't display local sender or destination tables in eximstats unless
3252 there is data to show.
3253 Added average volumes into the eximstats top table text output.
3255 SC/03 Collect data on the number of addresses (recipients) as well
3256 as the number of messages in eximstats.
3258 TF/01 Correct an error in the documentation for the redirect router. Exim
3259 does (usually) call initgroups() when daemonizing.
3261 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
3262 with consistent privilege compared to when running as a daemon.
3264 TF/03 Note in the spec that $authenticated_id is not set for local
3265 submissions from trusted users.
3267 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
3268 Thanks to Dean Brooks <dean@iglou.com> for the patch.
3270 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
3271 by adding some example configuration directives to the default
3272 configuration file. A little bit of work is required to uncomment the
3273 directives and define how usernames and passwords are checked, but
3274 there is now a framework to start from.
3276 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
3277 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
3278 without this. I don't know how relevant this is to other LDAP libraries.
3280 PH/02 Add the verb name to the "unknown ACL verb" error.
3282 PH/03 Magnus Holmgren's patch for filter_prepend_home.
3284 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
3286 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
3287 directory not expanded when it should be if an expanded home directory
3288 was set for the address (which is overridden by the transport).
3290 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
3293 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
3294 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
3295 because it is too late at that time, and has no effect.
3297 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
3298 security issue with \' (bugzilla #107). I could not use the
3299 PQescapeStringConn() function, because it needs a PGconn value as one of
3302 PH/08 When testing addresses using -bt, indicate those final addresses that
3303 are duplicates that would not cause an additional delivery. At least one
3304 person was confused, thinking that -bt output corresponded to deliveries.
3305 (Suppressing duplicates isn't a good idea as you lose the information
3306 about possibly different redirections that led to the duplicates.)
3308 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
3309 systems where poll() doesn't work, in particular OS X.
3311 PH/10 Added more information to debugging output for retry time not reached.
3313 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
3314 operations in malware.c.
3316 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
3319 PH/13 If write_rejectlog was set false when logging was sent to syslog with
3320 syslog_duplication set false, log lines that would normally be written
3321 both the the main log and to the reject log were not written to syslog at
3324 PH/14 In the default configuration, change the use of "message" in ACL warn
3325 statements to "add_header".
3327 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
3328 not followed by a command (e.g. "seen endif").
3330 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
3331 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
3334 PH/17 Added extra conditions to the default value of delay_warning_condition
3338 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
3339 { match{$h_precedence:}{(?i)bulk|list|junk} } \
3340 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
3343 The Auto-Submitted: and various List- headers are standardised, whereas I
3344 don't think Precedence: ever was.
3346 PH/18 Refactored debugging code in route_finduser() to show more information,
3347 in particular, the error code if getpwnam() issues one.
3349 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
3350 This is apparently needed in addition to the PH/07 change above to avoid
3351 any possible encoding problems.
3353 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
3354 but not after initializing Perl.
3356 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
3357 output them only if debugging. By default they are written stderr,
3358 apparently, which is not desirable.
3360 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
3363 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
3366 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
3368 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
3369 authenticated or an ident call has been made. Suppress the default
3370 values for $authenticated_id and $authenticated_sender (but permit -oMai
3371 and -oMas) when testing with -bh.
3373 PH/24 Re-jigged the order of the tests in the default configuration so that the
3374 tests for valid domains and recipients precede the DNS black list and CSA
3375 tests, on the grounds that those ones are more expensive.
3377 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
3378 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
3379 This bug exists in every version of Exim that I still have, right back to
3382 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
3383 However, an attempt to turn on case-sensitivity in a regex key by
3384 including (?-i) didn't work because the subject string was already
3385 lowercased, and the effects were non-intuitive. It turns out that a
3386 one-line patch can be used to allow (?-i) to work as expected.
3392 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
3393 other effects) broke the use of negated acl sub-conditions.
3395 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
3398 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
3399 "Deny" causes Exim to reject the incoming connection with a 554 error.
3400 Unfortunately, if there is a major crisis, such as a disk failure,
3401 tcp-wrappers gives "deny", whereas what one would like would be some
3402 kind of temporary error. A kludge has been added to help with this.
3403 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
3404 554 error is used if errno is still zero or contains ENOENT (which occurs
3405 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
3408 PH/03 Add -lutil to the default FreeBSD LIBS setting.
3410 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
3411 errors. Otherwise a message that provokes a temporary error (when other
3412 messages do not) can cause a whole host to time out.
3414 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
3415 addresses were routed directly to files or pipes from a redirect router.
3416 File deliveries just didn't batch; pipe deliveries might have suffered
3419 PH/06 A failure to get a lock for a hints database would erroneously always say
3420 "Failed to get write lock", even when it was really a read lock.
3422 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
3423 of 0600. This has been changed to use the value of the lockfile_mode
3424 option (which defaults to 0600).
3426 PH/08 Applied small patch from the Sieve maintainer.
3428 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
3429 folder from quota calculations, a direct delivery into this folder messed
3430 up the contents of the maildirsize file. This was because the regex was
3431 used only to exclude .Trash (or whatever) when the size of the mailbox
3432 was calculated. There was no check that a delivery was happening into an
3433 excluded directory. This bug has been fixed by ignoring all quota
3434 processing for deliveries into excluded directories.
3436 PH/10 Added the maildirfolder_create_regex option to appendfile.
3442 PH/01 The code for finding all the local interface addresses on a FreeBSD
3443 system running IPv6 was broken. This may well have applied to all BSD
3444 systems, as well as to others that have similar system calls. The broken
3445 code found IPv4 interfaces correctly, but gave incorrect values for the
3446 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
3447 that it would not match correctly against @[] and not recognize the IPv6
3450 PH/02 The ipliteral router was not recognizing addresses of the form user@
3451 [ipv6:....] because it didn't know about the "ipv6:" prefix.
3453 PH/03 Added disable_ipv6.
3455 PH/04 Changed $reply_address to use the raw form of the headers instead of the
3456 decoded form, because it is most often used to construct To: headers
3457 lines in autoreplies, and the decoded form may well be syntactically
3458 invalid. However, $reply_address has leading white space removed, and all
3459 newlines turned into spaces so that the autoreply transport does not
3462 PH/05 If group was specified without a user on a router, and no group or user
3463 was specified on a transport, the group from the router was ignored.
3465 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
3466 for visible compile-time settings that can be used to change these
3467 numbers, for those that want even more. Backwards compatibility with old
3468 spool files has been maintained. However, going back to a previous Exim
3469 release will lost any variables that are in spool files.
3471 PH/07 Two small changes when running in the test harness: increase delay when
3472 passing a TCP/IP connection to a new process, in case the original
3473 process has to generate a bounce, and remove special handling of
3474 127.0.0.2 (sic), which is no longer necessary.
3476 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
3477 be the same on different OS.
3479 PH/09 Moved a debug statement in filter processing to avoid a race problem when
3482 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
3483 whether --show-vars was specified or not
3485 JJ/02 exipick: Added support for new ACL variable spool format introduced
3488 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
3489 syntactically invalid From: or Reply-to: line, and a filter used this to
3490 generate an autoreply, and therefore failed to obtain an address for the
3491 autoreply, Exim could try to deliver to a non-existent relative file
3492 name, causing unrelated and misleading errors. What now happens is that
3493 it logs this as a hard delivery error, but does not attempt to create a
3496 PH/11 The exinext utility has a -C option for testing purposes, but although
3497 the given file was scanned by exinext itself; it wasn't being passed on
3498 when Exim was called.
3500 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
3501 an end-of-file indication when reading a command response.
3503 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
3504 compiled. In many other places in Exim, IPv6 addresses are always
3505 recognized, so I have changed this. It also means that IPv4 domain
3506 literals of the form [IPV4:n.n.n.n] are now always recognized.
3508 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
3509 used if the router is not running as root, for example, when verifying at
3510 ACL time, or when using -bh. The debugging output from this situation was
3511 non-existent - all you got was a failure to exec. I have made two
3514 (a) Failures to set uid/gid, the current directory, or a process leader
3515 in a subprocess such as that created by queryprogram now generate
3516 suitable debugging output when -d is set.
3518 (b) The queryprogram router detects when it is not running as root,
3519 outputs suitable debugging information if -d is set, and then runs
3520 the subprocess without attempting to change uid/gid.
3522 PH/15 Minor change to Makefile for building test_host (undocumented testing
3525 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
3526 additional section of a DNS packet that returns MX or SRV records.
3527 Instead, it always explicitly searches for A/AAAA records. This avoids
3528 major problems that occur when a DNS server includes only records of one
3529 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
3530 fixed another bug: if SRV records were looked up and the corresponding
3531 address records were *not* found in the additional section, the port
3532 values from the SRV records were lost.
3534 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
3535 using the correct key (the original address) when searching the retry
3536 rules in order to find which one to use for generating the retry hint.
3538 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
3539 adding the default one. Similarly, if it contains a Reply-To: header, the
3540 errors_reply_to option, if set, is not used.
3542 PH/19 When calculating a retry time, Exim used to measure the "time since
3543 failure" by looking at the "first failed" field in the retry record. Now
3544 it does not use this if it is later than than the arrival time of the
3545 message. Instead it uses the arrival time. This makes for better
3546 behaviour in cases where some deliveries succeed, thus re-setting the
3547 "first failed" field. An example is a quota failure for a huge message
3548 when small messages continue to be delivered. Without this change, the
3549 "time since failure" will always be short, possible causing more frequent
3550 delivery attempts for the huge message than are intended.
3551 [Note: This change was subsequently modified - see PH/04 for 4.62.]
3553 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
3554 $1, $2, $3) because the numerical variables can be reset during some
3555 expansion items (e.g. "match"), thereby losing the authentication data.
3557 PH/21 Make -bV show the size of off_t variables so that the test suite can
3558 decide whether to run tests for quotas > 2G.
3560 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
3561 mailbox_size, and mailbox_filecount in the appendfile transport. If a
3562 filecount value is greater than 2G or if a quota value is greater than 2G
3563 on a system where the size of off_t is not greater than 4, a panic error
3566 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
3567 never match. The debug and -bh output now contains an explicit error
3568 message indicating a malformed IPv4 address or mask.
3570 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
3571 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
3572 PH/23 above applies.
3574 PH/25 Do not write to syslog when running in the test harness. The only
3575 occasion when this arises is a failure to open the main or panic logs
3576 (for which there is an explicit test).
3578 PH/26 Added the /no_tell option to "control=freeze".
3580 PH/27 If a host name lookup failed very early in a connection, for example, if
3581 the IP address matched host_lookup and the reverse lookup yielded a name
3582 that did not have a forward lookup, an error message of the form "no IP
3583 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
3584 could be logged. Now it outputs the IP address instead of "NULL".
3586 PH/28 An enabling patch from MH: add new function child_open_exim2() which
3587 allows the sender and the authenticated sender to be set when
3588 submitting a message from within Exim. Since child_open_exim() is
3589 documented for local_scan(), the new function should be too.
3591 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
3592 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
3593 results in an empty string is now treated as unset.
3595 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
3597 PH/31 Added sender_verify_fail logging option.
3599 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
3600 needed by RFC 822 but not by RFC 2822 was commented out. I have now
3601 tidied the source and removed it altogether.
3603 PH/33 When a queue run was abandoned because the load average was too high, a
3604 log line was always written; now it is written only if the queue_run log
3605 selector is set. In addition, the log line for abandonment now contains
3606 information about the queue run such as the pid. This is always present
3607 in "start" and "stop" lines but was omitted from the "abandon" line.
3609 PH/34 Omit spaces between a header name and the colon in the error message that
3610 is given when verify = headers_syntax fails (if there are lots of them,
3611 the message gets confusing).
3613 PH/35 Change the default for dns_check_names_pattern to allow slashes within
3614 names, as there are now some PTR records that contain slashes. This check
3615 is only to protect against broken name servers that fall over on strange
3616 characters, so the fact that it applies to all lookups doesn't matter.
3618 PH/36 Now that the new test suite is complete, we can remove some of the
3619 special code in Exim that was needed for the old test suite. For example,
3620 sorting DNS records because real resolvers return them in an arbitrary
3621 order. The new test suite's fake resolver always returns records in the
3624 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
3625 bounces) except when queue_only is set, to avoid logging races between
3626 the different processes.
3628 PH/38 Panic-die if .include specifies a non-absolute path.
3630 PH/39 A tweak to the "H" retry rule from its user.
3632 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
3633 a label. They prevented compilation on older perls.
3635 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
3636 a warning to be raised on newish perls.
3638 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
3639 on queue. Changes to match documented behaviour of showing count of
3640 messages matching specified criteria.
3642 PH/40 Changed the default ident timeout from 30s to 5s.
3644 PH/41 Added support for the use of login_cap features, on those BSD systems
3645 that have them, for controlling the resources used by pipe deliveries.
3647 PH/42 The content-scanning code uses fopen() to create files in which to put
3648 message data. Previously it was not paying any attention to the mode of
3649 the files. Exim runs with umask(0) because the rest of the code creates
3650 files with open(), and sets the required mode explicitly. Thus, these
3651 files were ending up world-writeable. This was not a big issue, because,
3652 being within the spool directory, they were not world-accessible. I have
3653 created a function called modefopen, which takes an additional mode
3654 argument. It sets umask(777), creates the file, chmods it to the required
3655 mode, then resets the umask. All the relevant calls to fopen() in the
3656 content scanning code have been changed to use this function.
3658 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
3659 to 24 hours. This avoids potential overflow problems when processing G
3660 and H retry rules. I suspect nobody ever tinkers with this value.
3662 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
3664 PH/45 When the plaintext authenticator is running as a client, the server's
3665 challenges are checked to ensure they are valid base64 strings. By
3666 default, the authentication attempt is cancelled if an invalid string is
3667 received. Setting client_ignore_invalid_base64 true ignores these errors.
3668 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
3669 they are received. Thus, the responses can be made to depend on the
3670 challenges. If an invalid string is ignored, an empty string is placed in
3673 PH/46 Messages that are created by the autoreply transport now contains a
3674 References: header, in accordance with RFCs 2822 and 3834.
3676 PH/47 Added authenticated_sender_force to the smtp transport.
3678 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
3680 PH/49 Installed latest patch from the Sieve maintainer.
3682 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
3683 was also set, the appendfile transport was unnecessarily scanning a
3684 directory of message files (e.g. for maildir delivery) to find the count
3685 of files (along with the size), even though it did not need this
3686 information. It now does the scan only if it needs to find either the
3687 size of the count of files.
3689 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
3691 PH/52 Two bugs concerned with error handling when the smtp transport is
3694 (i) Exim was not creating retry information for temporary errors given
3695 for individual recipients after the DATA command when the smtp transport
3696 was used in LMTP mode. This meant that they could be retried too
3697 frequently, and not timed out correctly.
3699 (ii) Exim was setting the flag that allows error details to be returned
3700 for LMTP errors on RCPT commands, but not for LMTP errors for individual
3701 recipients that were returned after the DATA command.
3703 PH/53 This is related to PH/52, but is more general: for any failing address,
3704 when detailed error information was permitted to be returned to the
3705 sender, but the error was temporary, then after the final timeout, only
3706 "retry timeout exceeded" was returned. Now it returns the full error as
3707 well as "retry timeout exceeded".
3709 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
3710 do this, and (what is worse) MTAs that accept it.
3712 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
3713 will now be deprecated.
3715 PH/56 New os.c-cygwin from the Cygwin maintainer.
3717 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
3718 formats (previously only available in exim formats via -bpr, -bpru,
3719 and -bpra. Now also available in native and exiqgrep formats)
3721 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
3722 with very large, slow to parse queues
3724 JJ/08 exipick: added ! as generic prefix to negate any criteria format
3726 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
3728 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
3729 responses to authentication challenges, though it was showing the
3730 challenges; (ii) I've removed the CR characters from the debug output for
3733 PH/58 Allow for the insertion of a newline as well as a space when a string
3734 is turned into more than one encoded-word during RFC 2047 encoding. The
3735 Sieve code now uses this.
3737 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
3738 data_4xx, lost_connection, tls_required.
3740 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
3741 message was being sent as an SMTP response.
3743 PH/61 Add -l and -k options to exicyclog.
3745 PH/62 When verifying, if an address was redirected to one new address, so that
3746 verification continued, and the new address failed or deferred after
3747 having set something in $address_data, the value of $address_data was not
3748 passed back to the ACL. This was different to the case when no
3749 redirection occurred. The value is now passed back in both cases.
3751 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
3752 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
3753 use login_cap.h, so on its own it isn't the distinguishing feature. The
3754 new name refers directly to the setclassresources() function.
3756 PH/65 Added configuration files for NetBSD3.
3758 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
3760 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
3761 is preferred over IPv4.
3763 PH/68 The bounce_return_message and bounce_return_body options were not being
3764 honoured for bounces generated during the reception of non-SMTP messages.
3765 In particular, this applied to messages rejected by the ACL. This bug has
3766 been fixed. However, if bounce_return_message is true and bounce_return_
3767 body is false, the headers that are returned for a non-SMTP message
3768 include only those that have been read before the error was detected.
3769 (In the case of an ACL rejection, they have all been read.)
3771 PH/69 The HTML version of the specification is now built in a directory called
3772 spec_html instead of spec.html, because the latter looks like a path with
3773 a MIME-type, and this confuses some software.
3775 PH/70 Catch two compiler warnings in sieve.c.
3777 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
3778 function verify_get_ident() calls ip_connect() to connect a socket, but
3779 if the "connect()" function timed out, ip_connect() used to close the
3780 socket. However, verify_get_ident() also closes the socket later, and in
3781 between Exim writes to the log, which may get opened at this point. When
3782 the socket was closed in ip_connect(), the log could get the same file
3783 descriptor number as the socket. This naturally causes chaos. The fix is
3784 not to close the socket in ip_connect(); the socket should be closed by
3785 the function that creates it. There was only one place in the code where
3786 this was missing, in the iplookup router, which I don't think anybody now
3787 uses, but I've fixed it anyway.
3789 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
3790 well as to direct DNS lookups. Otherwise the handling of names in host
3791 lists is inconsistent and therefore confusing.
3797 PH/01 Two changes to the default runtime configuration:
3799 (1) Move the checks for relay_from_hosts and authenticated clients from
3800 after to before the (commented out) DNS black list checks.
3802 (2) Add control=submission to the relay_from_hosts and authenticated
3803 clients checks, on the grounds that messages accepted by these
3804 statements are most likely to be submissions.
3806 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
3808 (1) Generate an error if the third argument for the ${prvs expansion is
3811 (2) Treat a missing third argument of ${prvscheck as if it were an empty
3814 (3) Reset the variables that are obtained from the first argument of
3815 ${prvscheck and used in the second argument before leaving the code,
3816 because their memory is reclaimed, so using them afterwards may do
3819 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
3820 one (it's much easier than Tom thought :-).
3822 (5) Because of (4), we can now allow for the use of $prvscheck_result
3823 inside the third argument.
3825 PH/03 For some reason, the default setting of PATH when running a command from
3826 a pipe transport was just "/usr/bin". I have changed it to
3829 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
3830 anything to be listed in the output from -bV.
3832 PH/05 When a filter generated an autoreply, the entire To: header line was
3833 quoted in the delivery log line, like this:
3835 => >A.N.Other <ano@some.domain> <original@ddress> ...
3837 This has been changed so that it extracts the operative address. There
3838 may be more than one such address. If so, they are comma-separated, like
3841 => >ano@some.domain,ona@other.domain <original@ddress> ...
3843 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
3844 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
3845 not being looked up in the rDNS to get a host name, Exim was showing the
3846 IP address twice in Received: lines, even though the IP addresses were
3847 identical. For example:
3849 Received: from [1.2.3.4] (helo=[1.2.3.4])
3851 However, if the real host name was known, it was omitting the HELO data
3852 if it matched the actual IP address. This has been tidied up so that it
3853 doesn't show the same IP address twice.
3855 PH/07 When both +timestamp and +memory debugging was on, the value given by
3856 $tod_xxx expansions could be wrong, because the tod_stamp() function was
3857 called by the debug printing, thereby overwriting the timestamp buffer.
3858 Debugging no longer uses the tod_stamp() function when +timestamp is set.
3860 PH/08 When the original message was included in an autoreply transport, it
3861 always said "this is a copy of the message, including all the headers",
3862 even if body_only or headers_only was set. It now gives an appropriate
3865 PH/09 Applied a patch from the Sieve maintainer which:
3867 o fixes some comments
3868 o adds the (disabled) notify extension core
3869 o adds some debug output for the result of if/elsif tests
3870 o points to the current vacation draft in the documentation
3871 and documents the missing references header update
3875 o fixes a bug in processing the envelope test (when testing
3876 multiple envelope elements, the last element determined the
3879 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
3880 Electronic Mail") by including:
3882 Auto-submitted: auto-generated
3884 in the messages that it generates (bounce messages and others, such as
3885 warnings). In the case of bounce messages for non-SMTP messages, there was
3886 also a typo: it was using "Auto_submitted" (underscore instead of
3887 hyphen). Since every message generated by Exim is necessarily in response
3888 to another message, thes have all been changed to:
3890 Auto-Submitted: auto-replied
3892 in accordance with these statements in the RFC:
3894 The auto-replied keyword:
3896 - SHOULD be used on messages sent in direct response to another
3897 message by an automatic process,
3899 - MUST NOT be used on manually-generated messages,
3901 - MAY be used on Delivery Status Notifications (DSNs) and Message
3902 Disposition Notifications (MDNs),
3904 - MUST NOT be used on messages generated by automatic or periodic
3905 processes, except for messages which are automatic responses to
3908 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
3909 to the default Received: header definition.
3911 PH/12 Added log selector acl_warn_skipped (default on).
3913 PH/13 After a successful wildlsearch lookup, discard the values of numeric
3914 variables because (a) they are in the wrong storage pool and (b) even if
3915 they were copied, it wouldn't work properly because of the caching.
3917 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
3918 checking when decoding. Apparently there are clients that generate
3919 overlong encoded strings. Why am I not surprised?
3921 PH/15 If the first argument of "${if match_address" was not empty, but did not
3922 contain an "@" character, Exim crashed. Now it writes a panic log message
3923 and treats the condition as false.
3925 PH/16 In autoreply, treat an empty string for "once" the same as unset.
3927 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
3928 extension "envelope-auth". The code is finished and in agreement with
3929 other implementations, but there is no documentation so far and in fact,
3930 nobody wrote the draft yet. This extension is currently #undef'ed, thus
3931 not changing the active code.
3933 Print executed "if" and "elsif" statements when debugging is used. This
3934 helps a great deal to understand what a filter does.
3936 Document more things not specified clearly in RFC3028. I had all this
3937 sorted out, when out of a sudden new issues came to my mind. Oops."
3939 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
3942 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
3943 canonical form (as documented). However, after a host name lookup from
3944 the IP address, check_host() was doing a simple string comparison with
3945 addresses acquired from the DNS when checking that the found name did
3946 have the original IP as one of its addresses. Since any found IPv6
3947 addresses are likely to be in abbreviated form, the comparison could
3948 fail. Luckily, there already exists a function for doing the comparison
3949 by converting both addresses to binary, so now that is used instead of
3950 the text comparison.
3952 PH/20 There was another similar case to PH/19, when a complete host name was
3953 given in a host list; looking up its IP address could give an abbreviated
3954 form, whereas the current host's name might or might not be abbreviated.
3955 The same fix has been applied.
3961 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
3962 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
3965 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
3966 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
3968 PH/03 Typo: missing ".o" in src/pcre/Makefile.
3970 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
3971 header line, restrict the check to what is listed in RFCs 2369 and 2929.
3972 Also, for "Auto-Submitted", treat anything other than "no" as
3973 non-personal, in accordance with RFC 3834. (Previously it treated
3974 anything starting "auto-" as non-personal.)
3976 TF/01 The control=submission/name=... option had a problem with syntax
3977 errors if the name included a slash character. The /name= option
3978 now slurps the rest of the string, so it can include any characters
3979 but it must come last in the list of options (after /sender_retain
3982 PH/05 Some modifications to the interface to the fake nameserver for the new
3990 TK/01 Added the "success_on_redirect" address verification option. See
3991 NewStuff for rationale and an example.
3993 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
3995 PH/02 Patch to exigrep to allow it to work on syslog lines.
3997 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
3998 fread() to skip over the body file's header line, because in Cygwin the
3999 header line is locked and is inaccessible.
4001 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
4002 co-exist for some time) to make it clear that it is the Exim ID that is
4003 referenced, not the Message-ID: header line.
4005 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
4006 string_format() function, because snprintf() does not exist on all
4009 PH/06 The use of forbid_filter_existstest now also locks out the use of the
4010 ${stat: expansion item.
4012 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
4013 protocol synchronization error", to keep the pedants happy.
4015 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
4016 well as for IRIX systems, when gcc is being used. See the host.c source
4019 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
4021 PH/10 Named domain lists were not working if used in a queue_smtp_domains
4024 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
4025 transport and to the smtp transport in LMTP mode.
4027 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
4029 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
4030 run a filter in a subprocess. This could lead to confusion in subsequent
4031 lookups in the parent process. There should also be a search_tidyup() at
4032 the end of the subprocess.
4034 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
4035 only if the host matched helo_try_verify_hosts, which caused the
4036 verification to occur when the EHLO/HELO command was issued. The ACL just
4037 tested the remembered result. Now, if a previous verification attempt has
4038 not happened, "verify = helo" does it there and then.
4040 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
4042 TK/03 Fix log output including CR from clamd.
4044 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
4045 exist provoked a memory error which could cause a segfault.
4047 PH/15 Installed PCRE 6.2
4049 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
4051 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
4052 of the problem. Specifically, suggested +O2 rather than +O1 for the
4055 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
4057 PH/20 If a delivery was routed to a non-standard port by means of an SRV
4058 record, the port was not correctly logged when the outgoing_port log
4059 selector was set (it logged the transort's default port).
4061 PH/21 Added support for host-specific ports to manualroute, queryprogram,
4062 fallback_hosts, and "hosts" in the smtp transport.
4064 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
4065 host errors such as "Connection refused".
4067 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
4068 authentication with radiusclient 0.4.9:
4070 - Error returned from rc_read_config was caught wrongly
4071 - Username/password not passed on to radius server due to wrong length.
4073 The presumption is that some radiusclient API changes for 4.51/PH/17
4074 were not taken care of correctly. The code is still untested by me (my
4075 Linux distribution still has 0.3.2 of radiusclient), but it was
4076 contributed by a Radius user.
4078 PH/24 When doing a callout, the value of $domain wasn't set correctly when
4079 expanding the "port" option of the smtp transport.
4081 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
4082 while reading a MIME header. Thanks to Tom Hughes for a patch.
4084 PH/24 Include config.h inside local_scan.h so that configuration settings are
4087 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
4088 that in an ACL for RCPT (for example), you can examine exactly what was
4091 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
4092 commands, but it was not correctly comparing the address with the actual
4093 client host address. Thus, it would show the EHLO address in Received:
4094 header lines when this was not necessary.
4096 PH/27 Added the % operator to ${eval:}.
4098 PH/28 Exim tries to create and chdir to its spool directory when it starts;
4099 it should be ignoring failures (because with -C, for example, it has lost
4100 privilege). It wasn't ignoring creation failures other than "already
4103 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
4106 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
4107 because an input line was too long, either on its own, or by virtue of
4108 too many continuations, the temporary file was not being removed, and the
4109 return code was incorrect.
4111 PH/31 Missing "BOOL" in function definition in filtertest.c.
4113 PH/32 Applied Sieve patches from the maintainer.
4115 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
4117 PH/33 Added "verify = not_blind".
4119 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
4120 Local/Makefile (with some defaults set). These are used in built scripts
4121 such as exicyclog, but they have never been used in the exim_install
4122 script (though there are many overriding facilities there). I have
4123 arranged that the exim_install script now takes note of these two
4126 PH/35 Installed configuration files for Dragonfly.
4128 PH/36 When a locally submitted message by a trusted user did not contain a
4129 From: header, and the sender address was obtained from -f or from an SMTP
4130 MAIL command, and the trusted user did not use -F to supply a sender
4131 name, $originator_name was incorrectly used when constructing a From:
4132 header. Furthermore, $originator_name was used for submission mode
4133 messages from external hosts without From: headers in a similar way,
4134 which is clearly wrong.
4136 PH/37 Added control=suppress_local_fixups.
4138 PH/38 When log_selector = +received_sender was set, and the addition of the
4139 sender made the log line's construction buffer exactly full, or one byte
4140 less than full, an overflow happened when the terminating "\n" was
4143 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
4144 when the result of a list match is failure because a DNS lookup failed.
4146 PH/40 RM_COMMAND is now used in the building process.
4148 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
4149 the "build-* directories that it finds.
4151 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
4152 address in a domain literal was a prefix of an interface address.
4154 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
4155 when verifying a sender address, unless rewrite_headers is false.
4157 PH/44 Wrote a long comment about why errors_to addresses are verified as
4158 recipients, not senders.
4160 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
4161 the ratelimit ACL was added.
4163 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
4165 PH/46 Added extra information about PostgreSQL errors to the error string.
4167 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
4168 avoiding the need to install special zones in a real server. This is
4169 backwards compatible; if it can't find the fake resolver, it drops back.
4170 Thus, both old and new test suites can be run.
projects / exim.git / blob