Docs: tidy the ChangeLog file
[exim.git] / doc / doc-txt / ChangeLog
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.
8 Exim version 4.91
9 -----------------
11 GF/01 DEFER rather than ERROR on redis cluster MOVED response.
12 When redis_servers is set to a list of > 1 element, and the Redis servers
13 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
14 case of MOVED into a DEFER case instead, thus moving the query onto the
15 next server in the list. For a cluster of N elements, all N servers must
16 be defined in redis_servers.
18 GF/02 Catch and remove uninitialized value warning in exiqsumm
19 Check for existence of @ARGV before looking at $ARGV[0]
21 JH/01 Replace the store_release() internal interface with store_newblock(),
22 which internalises the check required to safely use the old one, plus
23 the allocate and data copy operations duplicated in both (!) of the
24 extant use locations.
26 JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
27 modifier. This matches the restriction on the commandline.
29 JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
30 Previously only the last row was returned.
32 JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
33 we assumed that tags in the header were well-formed, and parsed the
34 element content after inspecting only the first char of the tag.
35 Assumptions at that stage could crash the receive process on malformed
36 input.
38 JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
39 While running the DKIM ACL we operate on the Permanent memory pool so that
40 variables created with "set" persist to the DATA ACL. Also (at any time)
41 DNS lookups that fail create cache records using the Permanent pool. But
42 expansions release any allocations made on the current pool - so a dnsdb
43 lookup expansion done in the DKIM ACL releases the memory used for the
44 DNS negative-cache, and bad things result. Solution is to switch to the
45 Main pool for expansions.
46 While we're in that code, add checks on the DNS cache during store_reset,
47 active in the testsuite.
48 Problem spotted, and debugging aided, by Wolfgang Breyha.
50 JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
51 When none of the hosts presented to a transport match an already-open
52 connection, close it and proceed with the list. Previously we would
53 queue the message. Spotted by Lena with Yahoo, probably involving
54 round-robin DNS.
56 JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
57 Previously a spurious "250 OK id=" response was appended to the proper
58 failure response.
60 JH/08 The "support for" informational output now, which built with Content
61 Scanning support, has a line for the malware scanner interfaces compiled
62 in. Interface can be individually included or not at build time.
64 JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
65 by the template makefile "src/EDITME". The "STREAM" support for an older
66 ClamAV interface method is removed.
68 JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
69 rows affected is given instead).
71 JH/11 The runtime Berkeley DB library version is now additionally output by
72 "exim -d -bV". Previously only the compile-time version was shown.
74 JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
75 SMTP connection. Previously, when one had more receipients than the
76 first, an abortive onward connection was made. Move to full support for
77 multiple onward connections in sequence, handling cutthrough connection
78 for all multi-message initiating connections.
80 JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
81 routers. Previously, a multi-recipient message would fail to match the
82 onward-connection opened for the first recipient, and cause its closure.
84 JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
85 a timeout on read on a GnuTLS initiating connection, resulting in the
86 initiating connection being dropped. This mattered most when the callout
87 was marked defer_ok. Fix to keep the two timeout-detection methods
88 separate.
90 JH/15 Relax results from ACL control request to enable cutthrough, in
91 unsupported situations, from error to silently (except under debug)
92 ignoring. This covers use with PRDR, frozen messages, queue-only and
93 fake-reject.
95 HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
97 JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
98 metadata, resulting in a crash in free().
100 PP/01 Fix broken Heimdal GSSAPI authenticator integration.
101 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
102 Broken also in d185889f4, with init system revamp.
104 JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
105 Previously we abruptly closed the connection after reading a malware-
106 found indication; now we go on to read the "scan ok" response line,
107 and send a quit.
109 JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
110 ACL. Previously, a crash would result.
112 JH/19 Speed up macro lookups during configuration file read, by skipping non-
113 macro text after a replacement (previously it was only once per line) and
114 by skipping builtin macros when searching for an uppercase lead character.
116 JH/20 DANE support moved from Experimental to mainline. The Makefile control
117 for the build is renamed.
119 JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
120 was allocated for every new TLS startup, meaning one per message. Fix
121 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
123 JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
124 reported the original. Fix to report (as far as possible) the ACL
125 result replacing the original.
127 JH/23 Fix memory leak during multi-message connections using STARTTLS under
128 OpenSSL. Certificate information is loaded for every new TLS startup,
129 and the resources needed to be freed.
131 JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
133 JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
134 was not propagated.
136 JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
137 DATA response info to the (existing) per-recipient response info for
138 the "C=" log element. It can have useful tracking info from the
139 destination system. Patch from Simon Arlott.
141 JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
142 length value. Previously this would segfault.
144 HS/02 Support Avast multiline protoocol, this allows passing flags to
145 newer versions of the scanner.
147 JH/28 Ensure that variables possibly set during message acceptance are marked
148 dead before release of memory in the daemon loop. This stops complaints
149 about them when the debug_store option is enabled. Discovered specifically
150 for sender_rate_period, but applies to a whole set of variables.
151 Do the same for the queue-runner and queue-list loops, for variables set
152 from spool message files. Do the same for the SMTP per-message loop, for
153 certain variables indirectly set in ACL operations.
155 JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
156 as a multi-recipient message from a mailinglist manager). The coding had
157 an arbitrary cutoff number of characters while checking for more input;
158 enforced by writing a NUL into the buffer. This corrupted long / fast
159 input. The problem was exposed more widely when more pipelineing of SMTP
160 responses was introduced, and one Exim system was feeding another.
161 The symptom is log complaints of SMTP syntax error (NUL chars) on the
162 receiving system, and refused recipients seen by the sending system
163 (propating to people being dropped from mailing lists).
164 Discovered and pinpointed by David Carter.
166 JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
167 replaced by the ${authresults } expansion.
169 JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
171 HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
172 allows proper process termination in container environments.
174 JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
175 Previously the "final dot" had a newline after it; ensure it is CR,LF.
177 JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
178 and "err_perm", deprecated since 4.83 when the RFC-defined words
179 "temperror" and "permerror" were introduced.
181 JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
182 transport-filters or DKIM-signing. The restriction was lost in the
183 consolidation of verify-callout and delivery SMTP handling.
184 Extend the restriction to also cover ARC-signing.
186 JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
187 in defer=pass mode supply a 450 to the initiator. Previously the message
188 would be spooled.
190 PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
191 tls_require_ciphers is used as before.
194 Exim version 4.90
195 -----------------
197 JH/01 Rework error string handling in TLS interface so that the caller in
198 more cases is responsible for logging. This permits library-sourced
199 string to be attached to addresses during delivery, and collapses
200 pairs of long lines into single ones.
202 PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
203 during configuration. Wildcards are allowed and expanded.
205 JH/02 Rework error string handling in DKIM to pass more info back to callers.
206 This permits better logging.
208 JH/03 Rework the transport continued-connection mechanism: when TLS is active,
209 do not close it down and have the child transport start it up again on
210 the passed-on TCP connection. Instead, proxy the child (and any
211 subsequent ones) for TLS via a unix-domain socket channel. Logging is
212 affected: the continued delivery log lines do not have any DNSSEC, TLS
213 Certificate or OCSP information. TLS cipher information is still logged.
215 JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
216 identical IP addresses on different listening ports. Will also affect
217 "exiwhat" output.
219 PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
220 add noisy ifdef guards to special-case this sillyness.
221 Patch from Bernd Kuhls.
223 JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
224 than 255 are no longer allowed.
226 JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
227 Disable the session-cache too, which might reduce our load. Since we
228 currrectly use a new context for every connection, both as server and
229 client, there is no benefit for these.
230 GnuTLS appears to not support tickets server-side by default (we don't
231 call gnutls_session_ticket_enable_server()) but client side is enabled
232 by default on recent versions (3.1.3 +) unless the PFS priority string
233 is used (3.2.4 +).
235 PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
236 <>.
238 JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
239 the check for any unsuccessful recipients did not notice the limit, and
240 erroneously found still-pending ones.
242 JH/08 Pipeline CHUNKING command and data together, on kernels that support
243 MSG_MORE. Only in-clear (not on TLS connections).
245 JH/09 Avoid using a temporary file during transport using dkim. Unless a
246 transport-filter is involved we can buffer the headers in memory for
247 creating the signature, and read the spool data file once for the
248 signature and again for transmission.
250 JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
251 4.77 as the kernel support then wasn't solid, having issues in 64bit
252 mode. Now, it's been long enough. Add support for FreeBSD also.
254 JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
255 case where the routing stage had gathered several addresses to send to
256 a host before calling the transport for the first, we previously failed
257 to close down TLS in the old transport process before passing the TCP
258 connection to the new process. The new one sent a STARTTLS command
259 which naturally failed, giving a failed delivery and bloating the retry
260 database. Investigation and fix prototype from Wolfgang Breyha.
262 JH/12 Fix check on SMTP command input synchronisation. Previously there were
263 false-negatives in the check that the sender had not preempted a response
264 or prompt from Exim (running as a server), due to that code's lack of
265 awareness of the SMTP input buffering.
267 PP/04 Add commandline_checks_require_admin option.
268 Exim drops privileges sanely, various checks such as -be aren't a
269 security problem, as long as you trust local users with access to their
270 own account. When invoked by services which pass untrusted data to
271 Exim, this might be an issue. Set this option in main configuration
272 AND make fixes to the calling application, such as using `--` to stop
273 processing options.
275 JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
276 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
277 responses to those, into a single TLS record each way (this usually means
278 a single packet). As a side issue, smtp_enforce_sync now works on TLS
279 connections.
281 PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
282 affects you only if you're dancing at the edge of the param size limits.
283 If you are, and this message makes sense to you, then: raise the
284 configured limit or use OpenSSL 1.1. Nothing we can do for older
285 versions.
287 JH/14 For the "sock" variant of the malware scanner interface, accept an empty
288 cmdline element to get the documented default one. Previously it was
289 inaccessible.
291 JH/15 Fix a crash in the smtp transport caused when two hosts in succession
292 are unsuable for non-message-specific reasons - eg. connection timeout,
293 banner-time rejection.
295 JH/16 Fix logging of delivery remote port, when specified by router, under
296 callout/hold.
298 PP/06 Repair manualroute's ability to take options in any order, even if one
299 is the name of a transport.
300 Fixes bug 2140.
302 HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
304 JH/17 Change the list-building routines interface to use the expanding-string
305 triplet model, for better allocation and copying behaviour.
307 JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
308 Previously it was constructed the first time a possibly-matching string
309 was met in the configuration file input during startup; now it is done
310 during compilation.
312 JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
313 compatible one, to avoid the (poorly documented) possibility of a config
314 file in the working directory redirecting the DB files, possibly correpting
315 some existing file. CVE-2017-10140 assigned for BDB.
317 JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
318 cache-hot. Previously, although the result was properly cached, the
319 initial verify call returned a defer.
321 JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
322 the main verify for receipient in uncached-mode.
324 JH/22 Retire historical build files to an "unsupported" subdir. These are
325 defined as "ones for which we have no current evidence of testing".
327 JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
328 if present. Previously it was ignored.
330 JH/24 Start using specified-initialisers in C structure init coding. This is
331 a C99 feature (it's 2017, so now considered safe).
333 JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
334 if was a fixed-sized field and bitmask ops via macros; it is now more
335 extensible.
337 PP/07 GitHub PR 56: Apply MariaDB build fix.
338 Patch provided by Jaroslav Škarvada.
340 PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
341 during Coverity cleanups [4.87 JH/47]
342 Diagnosis and fix provided by Michael Fischer v. Mollard.
344 JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
345 the right size to place the terminating semicolon on its own folded
346 line, the header hash was calculated to an incorrect value thanks to
347 the (relaxed) space the fold became.
349 HS/02 Fix Bug 2130: large writes from the transport subprocess where chunked
350 and confused the parent.
352 JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
353 which could crash as a result. This could lead to undeliverable messages.
355 JH/28 Logging: "next input sent too soon" now shows where input was truncated
356 for log purposes.
358 JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
359 matters on fast-turnover and PID-randomising systems, which were getting
360 out-of-order delivery.
362 JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
363 a possibly-overlapping copy. The symptom was that "Remote host closed
364 connection in response to HELO" was logged instead of the actual 4xx
365 error for the HELO.
367 JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
368 Previously only that bufferd was discarded, resulting in SYMTP command
369 desynchronisation.
371 JH/32 DKIM: when a message has multiple signatures matching an identity given
372 in dkim_verify_signers, run the dkim acl once for each. Previously only
373 one run was done. Bug 2189.
375 JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
376 "panic the current process" to "deliberately defer". The panic log is
377 still written with the problem list name; the mail and reject logs now
378 get a temp-reject line for the message that was being handled, saying
379 something like "domains check lookup or other defer". The SMTP 451
380 message is still "Temporary local problem".
382 JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
383 A crafted sequence of BDAT commands could result in in-use memory beeing
384 freed. CVE-2017-16943.
386 HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
387 from SMTP input. Previously it was always done; now only done for DATA
388 and not BDAT commands. CVE-2017-16944.
390 JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
391 to the message (such as an overlong header line). Previously this was
392 not done and we did not exit BDAT mode. Followon from the previous item
393 though a different problem.
396 Exim version 4.89
397 -----------------
399 JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
400 than -2003 did; needs libidn2 in addition to libidn.
402 JH/02 The path option on a pipe transport is now expanded before use.
404 PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
405 Patch provided by "Björn", documentation fix added too.
407 JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
408 missing a wire-to-host endian conversion.
410 JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
411 close after a BDAT command line could be taken as a following command,
412 giving a synch failure. Fix by only checking for synch immediately
413 before acknowledging the chunk.
415 PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
416 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
417 macro. Patches provided by Josh Soref.
419 JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
420 Previously we did not; the RFC seems ambiguous and VRFY is not listed
421 by IANA as a service extension. However, John Klensin suggests that we
422 should.
424 JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
425 the dkim code may be unix-mode line endings rather than smtp wire-format
426 CRLF, so prepend a CR to any bare LF.
428 JH/07 Rationalise the coding for callout smtp conversations and transport ones.
429 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
431 JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
432 the first were themselves being wrongly included in the feed into dkim
433 processing; with most chunk sizes in use this resulted in an incorrect
434 body hash calculated value.
436 JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
437 DKIM signature block, for verification. Although advised against by
438 standards it is specifically not ruled illegal.
440 JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
442 JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
443 missing a body hash (the bh= tag).
445 JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
446 It seems that HAProxy sends the Proxy Protocol information in clear and
447 only then does a TLS startup, so do the same.
449 JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
450 TCP connections (such as for Spamd) unless the daemon successfully set
451 Fast Open mode on its listening sockets. This fixes breakage seen on
452 too-old kernels or those not configured for Fast Open, at the cost of
453 requiring both directions being enabled for TFO, and TFO never being used
454 by non-daemon-related Exim processes.
456 JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
457 endings, at least on the first header line. Try to canonify any that get
458 past that check, despite the cost.
460 JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
461 now limited to an arbitrary five deep, while parsing addresses with the
462 strip_excess_angle_brackets option enabled.
464 PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
465 instead leave the unprompted TLS handshake in socket buffer for the
466 TLS library to consume.
468 PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
470 PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
472 JH/16 Drop variables when they go out of scope. Memory management drops a whole
473 region in one operation, for speed, and this leaves assigned pointers
474 dangling. Add checks run only under the testsuite which checks all
475 variables at a store-reset and panics on a dangling pointer; add code
476 explicitly nulling out all the variables discovered. Fixes one known
477 bug: a transport crash, where a dangling pointer for $sending_ip_address
478 originally assigned in a verify callout, is re-used.
480 PP/06 Drop '.' from @INC in various Perl scripts.
482 PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
484 PP/08 Reduce a number of compilation warnings under clang; building with
485 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
486 should be warning-free.
488 JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
490 HS/01 Fix portability problems introduced by PP/08 for platforms where
491 realloc(NULL) is not equivalent to malloc() [SunOS et al].
493 HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
494 chunk. This allows us to accept broken chunked messages. We need a more
495 general solution here.
497 PP/09 Wrote util/ to help recover
498 already-broken messages in the queue.
500 JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
502 JH/19 Fix reference counting bug in routing-generated-address tracking.
505 Exim version 4.88
506 -----------------
508 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
509 supports it and a size is available (ie. the sending peer gave us one).
511 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
512 years of being deprecated). The replacements are the ACLs
513 acl_smtp_mime and acl_not_smtp_mime.
515 JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
516 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
517 or even an in-clear connection were permitted. Now, if the host lookup
518 was dnssec and dane was requested then the host is only used if the
519 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
520 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
521 if one fails this test.
522 This means that a poorly-configured remote DNS will make it incommunicado;
523 but it protects against a DNS-interception attack on it.
525 JH/04 Bug 1810: make continued-use of an open smtp transport connection
526 non-noisy when a race steals the message being considered.
528 JH/05 If main configuration option tls_certificate is unset, generate a
529 self-signed certificate for inbound TLS connections.
531 JH/06 Bug 165: hide more cases of password exposure - this time in expansions
532 in rewrites and routers.
534 JH/07 Retire gnutls_require_mac These were nonfunctional since 4.80
535 and logged a warning sing 4.83; now they are a configuration file error.
537 JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
538 (lacking @domain). Apply the same qualification processing as RCPT.
540 JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
542 JH/10 Support ${sha256:} applied to a string (as well as the previous
543 certificate).
545 JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
546 a cutthrough deliver is pending, as we always want to make a connection.
547 This also avoids re-routing the message when later placing the cutthrough
548 connection after a verify cache hit.
549 Do not update it with the verify result either.
551 JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
552 when routing results in more than one destination address.
554 JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
555 signing (which inhibits the cutthrough capability). Previously only
556 the presence of an option was tested; now an expansion evaluating as
557 empty is permissible (obviously it should depend only on data available
558 when the cutthrough connection is made).
560 JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
561 the relevant preceding SMTP command did not note the pipelining mode.
563 JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
564 Previously they were not counted.
566 JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
567 as one having no matching records. Previously we deferred the message
568 that needed the lookup.
570 JH/17 Fakereject: previously logged as a normal message arrival "<="; now
571 distinguished as "(=".
573 JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
574 for missing MX records. Previously it only worked for missing A records.
576 JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
578 JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
579 after the data-go-ahead and data-ack. Patch from Jason Betts.
581 JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
582 even for a "none" policy. Patch from Tony Meyer.
584 JH/22 Fix continued use of a connection for further deliveries. If a port was
585 specified by a router, it must also match for the delivery to be
586 compatible.
588 JH/23 Bug 1874: fix continued use of a connection for further deliveries.
589 When one of the recipients of a message was unsuitable for the connection
590 (has no matching addresses), we lost track of needing to mark it
591 deferred. As a result mail would be lost.
593 JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
595 JH/25 Decoding ACL controls is now done using a binary search; the source code
596 takes up less space and should be simpler to maintain. Merge the ACL
597 condition decode tables also, with similar effect.
599 JH/26 Fix problem with one_time used on a redirect router which returned the
600 parent address unchanged. A retry would see the parent address marked as
601 delivered, so not attempt the (identical) child. As a result mail would
602 be lost.
604 JH/27 Fix a possible security hole, wherein a process operating with the Exim
605 UID can gain a root shell. Credit to for
606 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
607 itself :(
609 JH/28 Enable {spool,log} filesystem space and inode checks as default.
610 Main config options check_{log,spool}_{inodes,space} are now
611 100 inodes, 10MB unless set otherwise in the configuration.
613 JH/29 Fix the connection_reject log selector to apply to the connect ACL.
614 Previously it only applied to the main-section connection policy
615 options.
617 JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
619 PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
620 by me. Added RFC7919 DH primes as an alternative.
622 PP/02 Unbreak build via pkg-config with new hash support when crypto headers
623 are not in the system include path.
625 JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
626 GnuTLS, when a session startup failed (eg because the client disconnected)
627 Exim did stdio operations after fclose. This was exposed by a recent
628 change which nulled out the file handle after the fclose.
630 JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
631 signed directly by the cert-signing cert, rather than an intermediate
632 OCSP-signing cert. This is the model used by LetsEncrypt.
634 JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
636 HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
637 an incoming connection.
639 HS/02 Bug 1802: Do not half-close the connection after sending a request
640 to rspamd.
642 HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
643 fallback to "prime256v1".
645 JH/34 SECURITY: Use proper copy of DATA command in error message.
646 Could leak key material. Remotely exploitable. CVE-2016-9963.
649 Exim version 4.87
650 -----------------
652 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
653 and 3.4.4 - once the server is enabled to respond to an OCSP request
654 it does even when not requested, resulting in a stapling non-aware
655 client dropping the TLS connection.
657 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
658 support variable-length bit vectors. No functional change.
660 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
661 The I= interface field on outgoing lines is now after the H= remote
662 host field, same as incoming lines. There is a separate
663 outgoing_interface log selector which allows you to disable the
664 outgoing I= field.
666 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
667 If not running log_selector +smtp_connection the mainlog would be held
668 open indefinitely after a "too many connections" event, including to a
669 deleted file after a log rotate. Leave the per net connection logging
670 leaving it open for efficiency as that will be quickly detected by the
671 check on the next write.
673 HS/01 Bug 1671: Fix post transport crash.
674 Processing the wait-<transport> messages could crash the delivery
675 process if the message IDs didn't exist for some reason. When
676 using 'split_spool_directory=yes' the construction of the spool
677 file name failed already, exposing the same netto behaviour.
679 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
680 mime_regex ACL conditions.
682 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
683 to DSN fail messages (bounces): remote IP, remote greeting, remote response
684 to HELO, local diagnostic string.
686 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
687 log line to debug. Even when configured with a tls authenticator many
688 client connections are expected to not authenticate in this way, so
689 an authenticate fail is not an error.
691 HS/02 Add the Exim version string to the process info. This way exiwhat
692 gives some more detail about the running daemon.
694 JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
695 matter for fast-change records such as DNSBLs.
697 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
698 retry record, even if constant. There may be multiple transports with
699 different interface settings and the retry behaviour needs to be kept
700 distinct.
702 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
704 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
706 JH/10 Bug 840: fix log_defer_output option of pipe transport
708 JH/11 Bug 830: use same host for all RCPTS of a message, even under
709 hosts_randomize. This matters a lot when combined with mua_wrapper.
711 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
712 ${quote_pgsql:<string>} operator.
714 JH/13 Bug 1708: avoid misaligned access in cached lookup.
716 JH/14 Change header file name for freeradius-client. Relevant if compiling
717 with Radius support; from the Gentoo tree and checked under Fedora.
719 JH/15 Bug 1712: Introduce $prdr_requested flag variable
721 JH/16 Bug 1714: Permit an empty string as expansion result for transport
722 option transport_filter, meaning no filtering.
724 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
726 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
727 defaults to "*" (all hosts). The variable is now available when not built
728 with TLS, default unset, mainly to enable keeping the testsuite sane.
729 If a server certificate is not supplied (via tls_certificate) an error is
730 logged, and clients will find TLS connections fail on startup. Presumably
731 they will retry in-clear.
732 Packagers of Exim are strongly encouraged to create a server certificate
733 at installation time.
735 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
736 with the $config_file variable.
738 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
739 in transport context, after the attempt, and per-recipient. The latter type
740 is per host attempted. The event data is the error message, and the errno
741 information encodes the lookup type (A vs. MX) used for the (first) host,
742 and the trailing two digits of the smtp 4xx response.
744 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
745 to write to mainlog (or rejectlog, paniclog) in the window between file
746 creation and permissions/ownership being changed. Particularly affects
747 installations where exicyclog is run as root, rather than exim user;
748 result is that the running daemon panics and dies.
750 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
752 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
753 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
754 "pri" and "weight". Note that the previous implicit priority given by the
755 list order is no longer honoured.
757 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
758 for DKIM processing.
760 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
761 by defining SUPPORT_SOCKS.
763 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
764 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
765 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
766 variables are renamed to proxy_{local,external}_{address,port}.
768 JH/27 Move Internationalisation support from Experimental to mainline, enabled
769 for a build by defining SUPPORT_I18N
771 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
772 of the query string, and make ${quote_redis:} do that quoting.
774 JH/29 Move Events support from Experimental to mainline, enabled by default
775 and removable for a build by defining DISABLE_EVENT.
777 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
779 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
780 cached by the daemon.
782 JH/32 Move Redis support from Experimental to mainline, enabled for a build
783 by defining LOOKUP_REDIS. The libhiredis library is required.
785 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
786 keys are given for lookup.
788 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
789 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
790 only supported when built with TLS support. The PolarSSL SHA routines
791 are still used when the TLS library is too old for convenient support.
793 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
794 openssl_options), for security. OpenSSL forces this from version 1.1.0
795 server-side so match that on older versions.
797 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
798 allocation for $value could be released as the expansion processing
799 concluded, but leaving the global pointer active for it.
801 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
802 and to use the domains and local_parts ACL conditions.
804 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
805 incorrectly not doubled on cutthrough transmission, hence seen as a
806 body-termination at the receiving system - resulting in truncated mails.
807 Commonly the sender saw a TCP-level error, and retransmitted the message
808 via the normal store-and-forward channel. This could result in duplicates
809 received - but deduplicating mailstores were liable to retain only the
810 initial truncated version.
812 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
814 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
816 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
817 we're in there, support oversigning also; bug 1309.
819 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
821 HS/04 Add support for keep_environment and add_environment options.
823 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
824 either intentional arithmetic overflow during PRNG, or testing config-
825 induced overflows.
827 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
828 delivery resulted in actual delivery. Cancel cutthrough before DATA
829 stage.
831 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
832 rejects a recipient: pass the reject to the originator.
834 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
835 Many were false-positives and ignorable, but it's worth fixing the
836 former class.
838 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
839 for the new environment-manipulation done at startup. Move the routines
840 from being local to tls.c to being global via the os.c file.
842 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
843 an extract embedded as result-arg for a map, the first arg for extract
844 is unavailable so we cannot tell if this is a numbered or keyed
845 extraction. Accept either.
848 Exim version 4.86
849 -----------------
851 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
852 expanded.
854 JH/02 The smtp transport option "multi_domain" is now expanded.
856 JH/03 The smtp transport now requests PRDR by default, if the server offers
857 it.
859 JH/04 Certificate name checking on server certificates, when exim is a client,
860 is now done by default. The transport option tls_verify_cert_hostnames
861 can be used to disable this per-host. The build option
864 JH/05 The value of the tls_verify_certificates smtp transport and main options
865 default to the word "system" to access the system default CA bundle.
866 For GnuTLS, only version 3.0.20 or later.
868 JH/06 Verification of the server certificate for a TLS connection is now tried
869 (but not required) by default. The verification status is now logged by
870 default, for both outbound TLS and client-certificate supplying inbound
871 TLS connections
873 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
874 sites use this now.
876 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
877 Status Notification (bounce) messages are now MIME format per RFC 3464.
878 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
879 under the control of the dsn_advertise_hosts option, and routers may
880 have a dsn_lasthop option.
882 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
883 default, modifiable by a malware= option. The list separator for
884 the options can now be changed in the usual way. Bug 68.
886 JH/10 The smtp_receive_timeout main option is now expanded before use.
888 JH/11 The incoming_interface log option now also enables logging of the
889 local interface on delivery outgoing connections.
891 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
892 if the interface and destination host and port all match.
894 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
895 /defer_ok option.
897 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
898 Patch from Andrew Lewis.
900 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
901 now supports optional time-restrictions, weighting, and priority
902 modifiers per server. Patch originally by <>.
904 JH/16 The spamd_address main option now supports a mixed list of local
905 and remote servers. Remote servers can be IPv6 addresses, and
906 specify a port-range.
908 JH/17 Bug 68: The spamd_address main option now supports an optional
909 timeout value per server.
911 JH/18 Bug 1581: Router and transport options headers_add/remove can
912 now have the list separator specified.
914 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
915 option values.
917 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
918 under OpenSSL.
920 JH/21 Support for the A6 type of dns record is withdrawn.
922 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
923 rather than the verbs used.
925 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
926 from 255 to 1024 chars.
928 JH/24 Verification callouts now attempt to use TLS by default.
930 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
931 are generic router options now. The defaults didn't change.
933 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
934 Original patch from Alexander Shikoff, worked over by JH.
936 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
937 files if ZCAT_COMMAND is not executable.
939 JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
941 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
943 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
944 Normally benign, it bites when the pair was led to by a CNAME;
945 modern usage is to not canonicalize the domain to a CNAME target
946 (and we were inconsistent anyway for A-only vs AAAA+A).
948 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
950 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
951 when evaluating $sender_host_dnssec.
953 JH/31 Check the HELO verification lookup for DNSSEC, adding new
954 $sender_helo_dnssec variable.
956 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
958 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
960 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
962 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
963 documented as working, but never had. Support all but $spam_report.
965 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
966 added for tls authenticator.
968 HS/03 Add perl_taintmode main config option
971 Exim version 4.85
972 -----------------
974 TL/01 When running the test suite, the README says that variables such as
975 no_msglog_check are global and can be placed anywhere in a specific
976 test's script, however it was observed that placement needed to be near
977 the beginning for it to behave that way. Changed the runtest perl
978 script to read through the entire script once to detect and set these
979 variables, reset to the beginning of the script, and then run through
980 the script parsing/test process like normal.
982 TL/02 The BSD's have an arc4random API. One of the functions to induce
983 adding randomness was arc4random_stir(), but it has been removed in
984 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
985 function when detected.
987 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
988 cause callback expansion.
990 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
991 syntax errors in an expansion can be treated as a string instead of
992 logging or causing an error, due to the internal use of bool_lax
993 instead of bool when processing it.
995 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
996 server certificates when making smtp deliveries.
998 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1000 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1002 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1004 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1005 Merged patch from Sebastian Wiedenroth.
1007 JH/05 Fix results-pipe from transport process. Several recipients, combined
1008 with certificate use, exposed issues where response data items split
1009 over buffer boundaries were not parsed properly. This eventually
1010 resulted in duplicates being sent. This issue only became common enough
1011 to notice due to the introduction of connection certificate information,
1012 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1014 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1015 size buffer was used, resulting in syntax errors when an expansion
1016 exceeded it.
1018 JH/07 Add support for directories of certificates when compiled with a GnuTLS
1019 version 3.3.6 or later.
1021 JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
1022 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1023 both become "event_action", the variables become $event_name, $event_data
1024 and $event_defer_errno. There is a new variable $verify_mode, usable in
1025 routers, transports and related events. The tls:cert event is now also
1026 raised for inbound connections, if the main configuration event_action
1027 option is defined.
1029 TL/06 In test suite, disable OCSP for old versions of openssl which contained
1030 early OCSP support, but no stapling (appears to be less than 1.0.0).
1032 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1033 server certificate names available under the smtp transport option
1034 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1035 matches.
1037 JH/10 Time-related extraction expansions from certificates now use the main
1038 option "timezone" setting for output formatting, and are consistent
1039 between OpenSSL and GnuTLS compilations. Bug 1541.
1041 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1042 encoded parameter in the incoming message. Bug 1558.
1044 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1045 include certificate info, eximon was claiming there were spoolfile
1046 syntax errors.
1048 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
1050 JH/14 Log delivery-related information more consistently, using the sequence
1051 "H=<name> [<ip>]" wherever possible.
1053 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1054 are problematic for Debian distribution, omit them from the release
1055 tarball.
1057 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1059 JH/16 Fix string representation of time values on 64bit time_t architectures.
1060 Bug 1561.
1062 JH/17 Fix a null-indirection in certextract expansions when a nondefault
1063 output list separator was used.
1066 Exim version 4.84
1067 -----------------
1068 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1069 checkers that were complaining about end of non-void function with no
1070 return.
1072 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
1073 This was a regression introduced in 4.83 by another bugfix.
1075 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1077 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
1078 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
1081 Exim version 4.83
1082 -----------------
1084 TF/01 Correctly close the server side of TLS when forking for delivery.
1086 When a message was received over SMTP with TLS, Exim failed to clear up
1087 the incoming connection properly after forking off the child process to
1088 deliver the message. In some situations the subsequent outgoing
1089 delivery connection happened to have the same fd number as the incoming
1090 connection previously had. Exim would try to use TLS and fail, logging
1091 a "Bad file descriptor" error.
1093 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1094 utilities have not been installed.
1096 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1097 temporary space as the ACL may create new global variables.
1099 TL/01 LDAP support uses per connection or global context settings, depending
1100 upon the detected version of the libraries at build time.
1102 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1103 to extract and use the src ip:port in logging and expansions as if it
1104 were a direct connection from the outside internet. PPv2 support was
1105 updated based on HAProxy spec change in May 2014.
1107 JH/02 Add ${listextract {number}{list}{success}{fail}}.
1109 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1110 Properly escape header and check for NULL return.
1112 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1113 not dns_use_dnssec.
1115 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1117 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1118 characters in header names, implemented as a verify condition.
1119 Contributed by Michael Fischer v. Mollard.
1121 TL/05 Rename SPF condition results err_perm and err_temp to standardized
1122 results permerror and temperror. Previous values are deprecated but
1123 still accepted. In a future release, err_perm and err_temp will be
1124 completely removed, which will be a backward incompatibility if the
1125 ACL tests for either of these two old results. Patch contributed by
1126 user bes-internal on the mailing list.
1128 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1130 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1131 selectors, in both main and reject logs.
1133 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1134 failed delivery.
1136 JH/07 Add malware type "sock" for talking to simple daemon.
1138 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
1140 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1141 routers/transports under cutthrough routing.
1143 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1144 numbers. Touch up "bool" conditional to keep the same definition.
1146 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1148 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1150 JH/12 Expand items in router/transport headers_add or headers_remove lists
1151 individually rather than the list as a whole. Bug 1452.
1153 Required for reasonable handling of multiple headers_ options when
1154 they may be empty; requires that headers_remove items with embedded
1155 colons must have them doubled (or the list-separator changed).
1157 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1158 view the policy declared in the DMARC record. Currently, $dmarc_status
1159 is a combined value of both the record presence and the result of the
1160 analysis.
1162 JH/13 Fix handling of $tls_cipher in (non-verify) transport. Bug 1455.
1164 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
1165 dnslookup router and the smtp transport (applying to the forward
1166 lookup).
1168 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1169 of ldap servers used for a specific lookup. Patch provided by Heiko
1170 Schlichting.
1172 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
1173 New variable $lookup_dnssec_authenticated for observability.
1175 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1176 Patch submitted by Lars Timman.
1178 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1180 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1181 Requires trusted mode and valid format message id, aborts otherwise.
1182 Patch contributed by Heiko Schlichting.
1184 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1185 certextract with support for various fields. Bug 1358.
1187 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1188 is requested by default, modifiable by smtp transport option
1189 hosts_request_ocsp.
1191 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
1192 operate on certificate variables to give certificate fingerprints
1193 Also new ${sha256:cert_variable}.
1195 JH/23 The PRDR feature is moved from being Experimental into the mainline.
1197 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1198 Christian Aistleitner.
1200 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1202 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1203 file. Patch from Wolfgang Breyha.
1205 JH/25 Expand the coverage of the delivery $host and $host_address to
1206 client authenticators run in verify callout. Bug 1476.
1208 JH/26 Port service names are now accepted for tls_on_connect_ports, to
1209 align with daemon_smtp_ports. Bug 72.
1211 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1212 support and error reporting did not work properly.
1214 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1215 and is readable. Patch from Andrew Colin Kissa.
1217 TL/14 Enhance documentation of ${run expansion and how it parses the
1218 commandline after expansion, particularly in the case when an
1219 unquoted variable expansion results in an empty value.
1221 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1223 PP/02 Fix internal collision of T_APL on systems which support RFC3123
1224 by renaming away from it. Addresses GH issue 15, reported by
1225 Jasper Wallace.
1227 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1229 TL/15 SECURITY: prevent double expansion in math comparison functions
1230 (can expand unsanitized data). Not remotely exploitable.
1231 CVE-2014-2972
1234 Exim version 4.82
1235 -----------------
1237 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1239 PP/02 Make -n do something, by making it not do something.
1240 When combined with -bP, the name of an option is not output.
1242 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1243 by GnuTLS.
1245 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1246 $sender_host_name and config options to manage this, and basic check
1247 routines.
1249 PP/05 DSCP support for outbound connections and control modifier for inbound.
1251 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
1252 (Only plugin which currently uses this is kerberos4, which nobody should
1253 be using, but we should make it available and other future plugins might
1254 conceivably use it, even though it would break NAT; stuff *should* be
1255 using channel bindings instead).
1257 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
1258 name; added for Sendmail compatibility; requires admin caller.
1259 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1260 just ignore it); requires trusted caller.
1261 Also parse but ignore: -Ac -Am -X<logfile>
1262 Bugzilla 1117.
1264 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
1266 TL/02 Add +smtp_confirmation as a default logging option.
1268 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1269 Patch by Magnus Holmgren from 2007-02-20.
1271 TL/04 Bugzilla 1281 - Spec typo.
1272 Bugzilla 1283 - Spec typo.
1273 Bugzilla 1290 - Spec grammar fixes.
1275 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
1277 TL/06 Add Experimental DMARC support using libopendmarc libraries.
1279 TL/07 Fix an out of order global option causing a segfault. Reported to dev
1280 mailing list by by Dmitry Isaikin.
1282 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1284 JH/02 Support "G" suffix to numbers in ${if comparisons.
1286 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1288 NM/01 Bugzilla 1197 - Spec typo
1289 Bugzilla 1196 - Spec examples corrections
1291 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
1293 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1294 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1295 function.
1297 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1298 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1300 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1301 "acl {{name}{arg}...}", and optional args on acl condition
1302 "acl = name arg..."
1304 JH/05 Permit multiple router/transport headers_add/remove lines.
1306 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1308 JH/07 Avoid using a waiting database for a single-message-only transport.
1309 Performance patch from Paul Fisher. Bugzilla 1262.
1311 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1312 Bugzilla 884.
1314 JH/09 Add $headers_added variable, with content from use of ACL modifier
1315 add_header (but not yet added to the message). Bugzilla 199.
1317 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1318 Pulled from Bugzilla 817 by Wolfgang Breyha.
1320 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1321 CVE-2012-5671
1322 (nb: this is the same fix as in Exim 4.80.1)
1324 JH/11 Add A= logging on delivery lines, and a client_set_id option on
1325 authenticators.
1327 JH/12 Add optional authenticated_sender logging to A= and a log_selector
1328 for control.
1330 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1332 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1333 advertise SMTP AUTH mechanism to us, instead of a generic
1334 protocol violation error. Also, make Exim more robust to bad
1335 data from the Dovecot auth socket.
1337 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1339 When a queue runner is handling a message, Exim first routes the
1340 recipient addresses, during which it prunes them based on the retry
1341 hints database. After that it attempts to deliver the message to
1342 any remaining recipients. It then updates the hints database using
1343 the retry rules.
1345 So if a recipient address works intermittently, it can get repeatedly
1346 deferred at routing time. The retry hints record remains fresh so the
1347 address never reaches the final cutoff time.
1349 This is a fairly common occurrence when a user is bumping up against
1350 their storage quota. Exim had some logic in its local delivery code
1351 to deal with this. However it did not apply to per-recipient defers
1352 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1354 This change adds a proper retry rule check during routing so that the
1355 final cutoff time is checked against the message's age. We only do
1356 this check if there is an address retry record and there is not a
1357 domain retry record; this implies that previous attempts to handle
1358 the address had the retry_use_local_parts option turned on. We use
1359 this as an approximation for the destination being like a local
1360 delivery, as in LMTP.
1362 I suspect this new check makes the old local delivery cutoff check
1363 redundant, but I have not verified this so I left the code in place.
1365 TF/02 Correct gecos expansion when From: is a prefix of the username.
1367 Test 0254 submits a message to Exim with the header
1369 Resent-From: f
1371 When I ran the test suite under the user fanf2, Exim expanded
1372 the header to contain my full name, whereas it should have added
1373 a Resent-Sender: header. It erroneously treats any prefix of the
1374 username as equal to the username.
1376 This change corrects that bug.
1378 GF/01 DCC debug and logging tidyup
1379 Error conditions log to paniclog rather than rejectlog.
1380 Debug lines prefixed by "DCC: " to remove any ambiguity.
1382 TF/03 Avoid unnecessary rebuilds of lookup-related code.
1384 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1385 Bug spotted by Jeremy Harris; was flawed since initial commit.
1386 Would have resulted in OCSP responses post-SNI triggering an Exim
1387 NULL dereference and crash.
1389 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1391 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1392 Bug detection, analysis and fix by Samuel Thibault.
1393 Bugzilla 1331, Debian bug #698092.
1395 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1397 JH/14 SMTP PRDR (
1398 Server implementation by Todd Lyons, client by JH.
1399 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1400 config variable "prdr_enable" controls whether the server
1401 advertises the facility. If the client requests PRDR a new
1402 acl_data_smtp_prdr ACL is called once for each recipient, after
1403 the body content is received and before the acl_smtp_data ACL.
1404 The client is controlled by both of: a hosts_try_prdr option
1405 on the smtp transport, and the server advertisement.
1406 Default client logging of deliveries and rejections involving
1407 PRDR are flagged with the string "PRDR".
1409 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1410 fclose(). Diagnosis by Todd Lyons.
1412 PP/17 Update configure.default to handle IPv6 localhost better.
1413 Patch by Alain Williams (plus minor tweaks).
1414 Bugzilla 880.
1416 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1417 This is now consistent with GnuTLS, and is now documented: the
1418 previous undocumented portable approach to treating the option as
1419 unset was to force an expansion failure. That still works, and
1420 an empty string is now equivalent.
1422 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1423 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1424 not performing validation itself.
1426 PP/20 Added force_command boolean option to pipe transport.
1427 Patch from Nick Koston, of cPanel Inc.
1429 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1430 Bugzilla 321, 823.
1432 TF/04 Added udpsend ACL modifier and hexquote expansion operator
1434 PP/21 Fix eximon continuous updating with timestamped log-files.
1435 Broken in a format-string cleanup in 4.80, missed when I repaired the
1436 other false fix of the same issue.
1437 Report and fix from Heiko Schlichting.
1438 Bugzilla 1363.
1440 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1441 Report from Prashanth Katuri.
1443 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1444 It's SecureTransport, so affects any MacOS clients which use the
1445 system-integrated TLS libraries, including email clients.
1447 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1448 using a MIME ACL for non-SMTP local injection.
1449 Report and assistance in diagnosis by Warren Baker.
1451 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1453 JH/16 Fix comparisons for 64b. Bugzilla 1385.
1455 TL/09 Add expansion variable $authenticated_fail_id to keep track of
1456 last id that failed so it may be referenced in subsequent ACL's.
1458 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1459 Alexander Miroch.
1461 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1462 ldap library initialization, allowing self-signed CA's to be
1463 used. Also properly sets require_cert option later in code by
1464 using NULL (global ldap config) instead of ldap handle (per
1465 session). Bug diagnosis and testing by alxgomz.
1467 TL/12 Enhanced documentation in the script provided in
1468 the src/util/ subdirectory.
1470 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1471 renamed to Transport Post Delivery Action by Jeremy Harris, as
1474 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1475 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1476 redis_servers = needs to be configured which will be used by the redis
1477 lookup. Patch from Warren Baker, of The Packet Hub.
1479 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1481 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1482 hostname or reverse DNS when processing a host list. Used suggestions
1483 from multiple comments on this bug.
1485 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1487 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1488 Missed a few lines, added it to make the runtest require no keyboard
1489 interaction.
1491 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1492 contains upper case chars. Make router use caseful_local_part.
1494 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1495 support when GnuTLS has been built with p11-kit.
1498 Exim version 4.80.1
1499 -------------------
1501 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1502 CVE-2012-5671
1503 This, or similar/improved, will also be change PP/11 of 4.82.
1506 Exim version 4.80
1507 -----------------
1509 PP/01 Handle short writes when writing local log-files.
1510 In practice, only affects FreeBSD (8 onwards).
1511 Bugzilla 1053, with thanks to Dmitry Isaikin.
1513 NM/01 Bugzilla 949 - Documentation tweak
1515 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1516 improved.
1518 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1520 PP/02 Implemented gsasl authenticator.
1522 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1524 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1525 `pkg-config foo` for cflags/libs.
1527 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1528 with rest of GSASL and with heimdal_gssapi.
1530 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1531 `pkg-config foo` for cflags/libs for the TLS implementation.
1533 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
1534 properties get this fed in as external SSF. A number of robustness
1535 and debugging improvements to the cyrus_sasl authenticator.
1537 PP/08 cyrus_sasl server now expands the server_realm option.
1539 PP/09 Bugzilla 1214 - Log authentication information in reject log.
1540 Patch by Jeremy Harris.
1542 PP/10 Added dbmjz lookup type.
1544 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
1546 PP/12 MAIL args handles TAB as well as SP, for better interop with
1547 non-compliant senders.
1548 Analysis and variant patch by Todd Lyons.
1550 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
1551 Bug report from Lars Müller <> (via SUSE),
1552 Patch from Dirk Mueller <>
1554 PP/13 tls_peerdn now print-escaped for spool files.
1555 Observed some $tls_peerdn in wild which contained \n, which resulted
1556 in spool file corruption.
1558 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1559 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1560 or write after TLS renegotiation, which otherwise led to messages
1561 "Got SSL error 2".
1563 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1564 as a tracking header (ie: a signed header comes before the signature).
1565 Patch from Wolfgang Breyha.
1567 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1568 comma-sep list; embedded commas doubled.
1570 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1572 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1573 diagnostics.
1574 Report and patch from Dmitry Banschikov.
1576 PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
1577 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1578 failures. We appear to now support TLS1.1+ with Exim.
1580 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1581 lets Exim select keys and certificates based upon TLS SNI from client.
1582 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1583 before an outbound SMTP session. New log_selector, +tls_sni.
1585 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1586 NULL dereference. Report and patch from Alun Jones.
1588 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1589 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1590 Not seeing resolver debug output on NetBSD, but suspect this is a
1591 resolver implementation change.
1593 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1594 Left warnings. Added "eximon gdb" invocation mode.
1596 PP/21 Defaulting "accept_8bitmime" to true, not false.
1598 PP/22 Added -bw for inetd wait mode support.
1600 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1601 locate the relevant includes and libraries. Made this the default.
1603 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1604 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1606 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
1607 This may cause build issues on older platforms.
1609 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1610 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1611 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1612 Added SNI support via GnuTLS too.
1613 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
1615 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
1617 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
1618 Applied second patch from Janne, implementing suggestion to default
1619 multiple-strings-in-record handling to match SPF spec.
1621 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
1623 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1624 read-only, out of scope).
1625 Patch from Wolfgang Breyha, report from Stuart Northfield.
1627 PP/29 Fix three issues highlighted by clang analyser static analysis.
1628 Only crash-plausible issue would require the Cambridge-specific
1629 iplookup router and a misconfiguration.
1630 Report from Marcin Mirosław.
1632 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1634 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1635 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1636 As part of this, removing so much warning spew let me fix some minor
1637 real issues in debug logging.
1639 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1640 assignment on my part. Fixed.
1642 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1643 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1644 Janne Snabb (who went above and beyond: thank you).
1646 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1647 string otherwise requires a connection and a bunch more work and it's
1648 relatively easy to get wrong. Should also expose TLS library linkage
1649 problems.
1651 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1652 64-bit ${eval} (JH/03).
1654 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
1655 GNU libc to support some of the 64-bit stuff, should not lead to
1656 conflicts. Defined before os.h is pulled in, so if a given platform
1657 needs to override this, it can.
1659 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1660 protection layer was required, which is not implemented.
1661 Bugzilla 1254, patch from Wolfgang Breyha.
1663 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1664 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1665 tls_dhparam take prime identifiers. Also unbreak combination of
1666 OpenSSL+DH_params+TLSSNI.
1668 PP/39 Disable SSLv2 by default in OpenSSL support.
1671 Exim version 4.77
1672 -----------------
1674 PP/01 Solaris build fix for Oracle's LDAP libraries.
1675 Bugzilla 1109, patch from Stephen Usher.
1677 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1679 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1680 whitespace trailer
1682 TF/02 Fix a couple more cases where we did not log the error message
1683 when unlink() failed. See also change 4.74-TF/03.
1685 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1686 lock up or crash if it happened to be inside a call to libc when it
1687 got a SIGUSR1 from exiwhat.
1689 The SIGUSR1 handler appends the current process status to the process
1690 log which is later printed by exiwhat. It used to use the general
1691 purpose logging code to do this, but several functions it calls are
1692 not safe for signals.
1694 The new output code in the SIGUSR1 handler is specific to the process
1695 log, and simple enough that it's easy to inspect for signal safety.
1696 Removing some special cases also simplifies the general logging code.
1697 Removing the spurious timestamps from the process log simplifies
1698 exiwhat.
1700 TF/04 Improved ratelimit ACL condition.
1702 The /noupdate option has been deprecated in favour of /readonly which
1703 has clearer semantics. The /leaky, /strict, and /readonly update modes
1704 are mutually exclusive. The update mode is no longer included in the
1705 database key; it just determines when the database is updated. (This
1706 means that when you upgrade Exim will forget old rate measurements.)
1708 Exim now checks that the per_* options are used with an update mode that
1709 makes sense for the current ACL. For example, when Exim is processing a
1710 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1711 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1712 must specify per_mail/readonly. If you omit the update mode it defaults to
1713 /leaky where that makes sense (as before) or /readonly where required.
1715 The /noupdate option is now undocumented but still supported for
1716 backwards compatibility. It is equivalent to /readonly except that in
1717 ACLs where /readonly is required you may specify /leaky/noupdate or
1718 /strict/noupdate which are treated the same as /readonly.
1720 A useful new feature is the /count= option. This is a generalization
1721 of the per_byte option, so that you can measure the throughput of other
1722 aggregate values. For example, the per_byte option is now equivalent
1723 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1725 The per_rcpt option has been generalized using the /count= mechanism
1726 (though it's more complicated than the per_byte equivalence). When it is
1727 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1728 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1729 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1730 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1731 Note that using per_rcpt with a non-readonly update mode in more than
1732 one ACL will cause the recipients to be double-counted. (The per_mail
1733 and per_byte options don't have this problem.)
1735 The handling of very low rates has changed slightly. If the computed rate
1736 is less than the event's count (usually one) then this event is the first
1737 after a long gap. In this case the rate is set to the same as this event's
1738 count, so that the first message of a spam run is counted properly.
1740 The major new feature is a mechanism for counting the rate of unique
1741 events. The new per_addr option counts the number of different
1742 recipients that someone has sent messages to in the last time period. It
1743 behaves like per_rcpt if all the recipient addresses are different, but
1744 duplicate recipient addresses do not increase the measured rate. Like
1745 the /count= option this is a general mechanism, so the per_addr option
1746 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1747 example, measure the rate that a client uses different sender addresses
1748 with the options per_mail/unique=$sender_address. There are further
1749 details in the main documentation.
1751 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1753 TF/06 Removed a few PCRE remnants.
1755 TF/07 Automatically extract Exim's version number from tags in the git
1756 repository when doing development or release builds.
1758 PP/02 Raise smtp_cmd_buffer_size to 16kB.
1759 Bugzilla 879. Patch from Paul Fisher.
1761 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1762 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1763 Bugzilla 97.
1765 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
1767 PP/05 Variable $av_failed, true if the AV scanner deferred.
1768 Bugzilla 1078. Patch from John Horne.
1770 PP/06 Stop make process more reliably on build failure.
1771 Bugzilla 1087. Patch from Heiko Schlittermann.
1773 PP/07 Make maildir_use_size_file an _expandable_ boolean.
1774 Bugzilla 1089. Patch from Heiko Schlittermann.
1776 PP/08 Handle ${run} returning more data than OS pipe buffer size.
1777 Bugzilla 1131. Patch from Holger Weiß.
1779 PP/09 Handle IPv6 addresses with SPF.
1780 Bugzilla 860. Patch from Wolfgang Breyha.
1782 PP/10 GnuTLS: support TLS 1.2 & 1.1.
1783 Bugzilla 1156.
1784 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1785 Bugzilla 1095.
1787 PP/11 match_* no longer expand right-hand-side by default.
1788 New compile-time build option, EXPAND_LISTMATCH_RHS.
1789 New expansion conditions, "inlist", "inlisti".
1791 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
1793 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
1795 PP/14 fix log_write() format string regression from TF/03.
1796 Bugzilla 1152. Patch from Dmitry Isaikin.
1799 Exim version 4.76
1800 -----------------
1802 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
1804 PP/02 Harmonised TLS library version reporting; only show if debugging.
1805 Layout now matches that introduced for other libraries in 4.74 PP/03.
1807 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
1809 PP/04 New "dns_use_edns0" global option.
1811 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
1812 Bugzilla 1098.
1814 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
1815 nb: Exim is not vulnerable to
1817 TK/01 Updated PolarSSL code to 0.14.2.
1818 Bugzilla 1097. Patch from Andreas Metzler.
1820 PP/07 Catch divide-by-zero in ${eval:...}.
1821 Fixes bugzilla 1102.
1823 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
1824 Bugzilla 1104.
1826 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
1827 format-string attack -- SECURITY: remote arbitrary code execution.
1829 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
1830 time unintentionally subject to list matching rules, letting the header
1831 cause arbitrary Exim lookups (of items which can occur in lists, *not*
1832 arbitrary string expansion). This allowed for information disclosure.
1834 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
1835 INT_MIN/-1 -- value coerced to INT_MAX.
1838 Exim version 4.75
1839 -----------------
1841 NM/01 Workaround for PCRE version dependency in version reporting
1842 Bugzilla 1073
1844 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
1845 This fixes portability to compilers other than gcc, notably
1846 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
1848 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
1849 makefiles for portability to HP-UX and POSIX correctness.
1851 PP/01 Permit LOOKUP_foo enabling on the make command-line.
1852 Also via indented variable definition in the Makefile.
1853 (Debugging by Oliver Heesakkers).
1855 PP/02 Restore caching of spamd results with expanded spamd_address.
1856 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
1858 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
1859 Improves build reliability. Fix from: Frank Elsner
1861 NM/02 Fix wide character breakage in the rfc2047 coding
1862 Fixes bug 1064. Patch from Andrey N. Oktyabrski
1864 NM/03 Allow underscore in dnslist lookups
1865 Fixes bug 1026. Patch from Graeme Fowler
1867 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
1868 Code patches from Adam Ciarcinski of NetBSD.
1870 NM/04 Fixed exiqgrep to cope with mailq missing size issue
1871 Fixes bug 943.
1873 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
1874 is logged, to avoid truncation. Patch from John Horne.
1876 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
1877 Patch from Jakob Hirsch.
1879 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
1880 SQL string expansion failure details.
1881 Patch from Andrey Oktyabrski.
1883 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
1884 Patch from Simon Arlott.
1886 PP/09 New lookups functionality failed to compile on old gcc which rejects
1887 extern declarations in function scope.
1888 Patch from Oliver Fleischmann
1890 PP/10 Use sig_atomic_t for flags set from signal handlers.
1891 Check getgroups() return and improve debugging.
1892 Fixed developed for diagnosis in bug 927 (which turned out to be
1893 a kernel bug).
1895 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
1896 Patch from Mark Zealey.
1898 PP/12 Bugzilla 1056: Improved spamd server selection.
1899 Patch from Mark Zealey.
1901 PP/13 Bugzilla 1086: Deal with maildir quota file races.
1902 Based on patch from Heiko Schlittermann.
1904 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
1905 Patch from Uwe Doering, sign-off by Michael Haardt.
1907 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
1908 variable declaration deep within a block. Bug and patch from
1909 Dennis Davis.
1911 PP/15 lookups-Makefile IRIX compatibility coercion.
1913 PP/16 Make DISABLE_DKIM build knob functional.
1915 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
1916 Patch by Simon Arlott
1918 TF/03 Fix valgrind.h portability to C89 compilers that do not support
1919 variable argument macros. Our copy now differs from upstream.
1922 Exim version 4.74
1923 -----------------
1925 TF/01 Failure to get a lock on a hints database can have serious
1926 consequences so log it to the panic log.
1928 TF/02 Log LMTP confirmation messages in the same way as SMTP,
1929 controlled using the smtp_confirmation log selector.
1931 TF/03 Include the error message when we fail to unlink a spool file.
1933 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
1934 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
1935 for maintaining out-of-tree patches for some time.
1937 PP/01 Bugzilla 139: Documentation and portability issues.
1938 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
1939 Handle per-OS dynamic-module compilation flags.
1941 PP/02 Let /dev/null have normal permissions.
1942 The 4.73 fixes were a little too stringent and complained about the
1943 permissions on /dev/null. Exempt it from some checks.
1944 Reported by Andreas M. Kirchwitz.
1946 PP/03 Report version information for many libraries, including
1947 Exim version information for dynamically loaded libraries. Created
1948 version.h, now support a version extension string for distributors
1949 who patch heavily. Dynamic module ABI change.
1951 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
1952 privilege escalation vulnerability whereby the Exim run-time user
1953 can cause root to append content of the attacker's choosing to
1954 arbitrary files.
1956 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
1957 (Wolfgang Breyha)
1959 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
1960 If dropping privileges for untrusted macros, we disabled normal logging
1961 on the basis that it would fail; for the Exim run-time user, this is not
1962 the case, and it resulted in successful deliveries going unlogged.
1963 Fixed. Reported by Andreas Metzler.
1966 Exim version 4.73
1967 -----------------
1969 PP/01 Date: & Message-Id: revert to normally being appended to a message,
1970 only prepend for the Resent-* case. Fixes regression introduced in
1971 Exim 4.70 by NM/22 for Bugzilla 607.
1973 PP/02 Include check_rfc2047_length in configure.default because we're seeing
1974 increasing numbers of administrators be bitten by this.
1976 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
1978 PP/03 Bugzilla 994: added openssl_options main configuration option.
1980 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
1982 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
1984 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
1986 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
1987 without a peer certificate, leading to a segfault because of an
1988 assumption that peers always have certificates. Be a little more
1989 paranoid. Problem reported by Martin Tscholak.
1991 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
1992 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
1993 NB: ClamAV planning to remove STREAM in "middle of 2010".
1994 CL also introduces -bmalware, various -d+acl logging additions and
1995 more caution in buffer sizes.
1997 PP/09 Implemented reverse_ip expansion operator.
1999 PP/10 Bugzilla 937: provide a "debug" ACL control.
2001 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2003 PP/12 Bugzilla 973: Implement --version.
2005 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2007 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2009 PP/15 Bugzilla 816: support multiple condition rules on Routers.
2011 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
2012 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2013 ignore trailing whitespace.
2015 JJ/02 prevent non-panic DKIM error from being sent to paniclog
2017 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2018 "exim" to be used
2020 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2021 Notification from Dr Andrew Aitchison.
2023 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2024 ExtendedDetectionInfo response format.
2025 Notification from John Horne.
2027 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2028 compatible.
2030 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2031 XSL and documented dependency on system catalogs, with examples of how
2032 it normally works.
2034 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2035 access.
2037 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2038 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2039 configuration file which is writeable by the Exim user or group.
2041 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2042 of configuration files to cover files specified with the -C option if
2043 they are going to be used with root privileges, not just the default
2044 configuration file.
2046 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2047 option (effectively making it always true).
2049 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2050 files to be used while preserving root privileges.
2052 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2053 that rogue child processes cannot use them.
2055 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2056 run-time user, instead of root.
2058 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2059 Exim run-time user without dropping privileges.
2061 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2062 result string, instead of calling string_vformat() twice with the same
2063 arguments.
2066 for other users. Others should always drop root privileges if they use
2067 -C on the command line, even for a whitelisted configure file.
2071 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2074 Exim version 4.72
2075 -----------------
2077 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2078 $data_path, and $header_path variables; fixed documentation bugs and
2079 typos
2081 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2082 exipick to access non-standard spools, including the "frozen" queue
2083 (Finput)
2085 NM/01 Bugzilla 965: Support mysql stored procedures.
2086 Patch from Alain Williams
2088 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2090 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2091 Patch from Andreas Metzler
2093 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2094 Patch from Kirill Miazine
2096 NM/05 Bugzilla 671: Added umask to procmail example.
2098 JJ/03 installed exipick 20100323.0, fixing doc bug
2100 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
2101 directory. Notification and patch from Dan Rosenberg.
2103 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2105 TK/02 Improve log output when DKIM signing operation fails.
2107 MH/01 Treat the transport option dkim_domain as a colon separated
2108 list, not as a single string, and sign the message with each element,
2109 omitting multiple occurences of the same signer.
2111 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2112 Bugzilla 985, 986. Patch by Simon Arlott
2114 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
2115 Patch by Simon Arlott
2117 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
2118 MBX locking. Notification from Dan Rosenberg.
2121 Exim version 4.71
2122 -----------------
2124 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
2126 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2128 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2130 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2132 NM/04 Bugzilla 915: Flag broken perl installation during build.
2135 Exim version 4.70
2136 -----------------
2138 TK/01 Added patch by Johannes Berg that expands the main option
2139 "spamd_address" if it starts with a dollar sign.
2141 TK/02 Write list of recipients to X-Envelope-Sender header when building
2142 the mbox-format spool file for content scanning (suggested by Jakob
2143 Hirsch).
2145 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2146 ( support via dccifd. Activated by
2147 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
2149 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2150 by Mark Daniel Reidel <>.
2152 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2153 When building exim an external PCRE library is now needed -
2154 PCRE is a system library on the majority of modern systems.
2155 See entry on PCRE_LIBS in EDITME file.
2157 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2158 conversation. Added nologin parameter to request.
2159 Patch contributed by Kirill Miazine.
2161 TF/01 Do not log submission mode rewrites if they do not change the address.
2163 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2165 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
2166 log files in place. Contributed by Roberto Lima.
2168 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
2170 TF/03 Bugzilla 615: When checking the local_parts router precondition
2171 after a local_part_suffix or local_part_prefix option, Exim now
2172 does not use the address's named list lookup cache, since this
2173 contains cached lookups for the whole local part.
2175 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
2176 Robert Millan. Documentation is in experimental-spec.txt.
2178 TF/04 Bugzilla 668: Fix parallel build (make -j).
2180 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
2182 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
2183 Patch provided by Jan Srzednicki.
2185 TF/05 Leading white space used to be stripped from $spam_report which
2186 wrecked the formatting. Now it is preserved.
2188 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2189 that they are available at delivery time.
2191 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2193 TF/08 TLS error reporting now respects the incoming_interface and
2194 incoming_port log selectors.
2196 TF/09 Produce a more useful error message if an SMTP transport's hosts
2197 setting expands to an empty string.
2199 NM/06 Bugzilla 744: EXPN did not work under TLS.
2200 Patch provided by Phil Pennock.
2202 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
2203 Patch provided by Richard Godbee.
2205 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
2206 acl_smtp_notquit, added index entry.
2208 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2209 Patch provided by Eugene Bujak.
2211 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2212 accept(). Patch provided by Maxim Dounin.
2214 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
2215 Patch provided by Phil Pennock.
2217 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2219 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
2220 Patch provided by Brad "anomie" Jorsch.
2222 NM/14 Bugzilla 622: Added timeout setting to transport filter.
2223 Patch provided by Dean Brooks.
2225 TK/05 Add native DKIM support (does not depend on external libraries).
2227 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
2228 Patch provided by Graeme Fowler.
2230 NM/16 Bugzilla 851: Documentation example syntax fix.
2232 NM/17 Changed NOTICE file to remove references to embedded PCRE.
2234 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2235 lsearch.
2237 NM/19 Bugzilla 745: TLS version reporting.
2238 Patch provided by Phil Pennock.
2240 NM/20 Bugzilla 167: bool: condition support.
2241 Patch provided by Phil Pennock.
2243 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2244 clients. Patch provided by Phil Pennock.
2246 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2247 Patch provided by Brad "anomie" Jorsch.
2249 NM/23 Bugzilla 687: Fix misparses in eximstats.
2250 Patch provided by Heiko Schlittermann.
2252 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2253 Patch provided by Heiko Schlittermann.
2255 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
2256 plus update to original patch.
2258 NM/26 Bugzilla 799: Documentation correction for ratelimit.
2260 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2261 Patch provided by David Brownlee.
2263 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
2265 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
2267 NM/30 Bugzilla 888: TLS documentation bugfixes.
2269 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
2271 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
2272 Unlike the original bugzilla I have changed all shell scripts in src tree.
2274 NM/33 Bugzilla 898: Transport filter timeout fix.
2275 Patch by Todd Rinaldo.
2277 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
2278 Patch by Serge Demonchaux.
2280 NM/35 Bugzilla 39: Base64 decode bug fixes.
2281 Patch by Jakob Hirsch.
2283 NM/36 Bugzilla 909: Correct connect() call in dcc code.
2285 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
2287 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
2289 NM/39 Bugzilla 911: Fixed MakeLinks build script.
2292 Exim version 4.69
2293 -----------------
2295 TK/01 Add preliminary DKIM support. Currently requires a forked version of
2296 ALT-N's libdkim that I have put here:
2299 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2300 were called 'true' and it seems that C99 defines that as a reserved
2301 keyword to be used with 'bool' variable types. That means you could
2302 not include C99-style headers which use bools without triggering
2303 build errors in sieve.c.
2305 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2306 as mailq or other aliases. Changed the --help handling significantly
2307 to do whats expected. exim_usage() emits usage/help information.
2309 SC/01 Added the -bylocaldomain option to eximstats.
2311 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
2313 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
2315 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
2318 Exim version 4.68
2319 -----------------
2321 PH/01 Another patch from the Sieve maintainer.
2323 PH/02 When an IPv6 address is converted to a string for single-key lookup
2324 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2325 dots are used instead of colons so that keys in lsearch files need not
2326 contain colons. This was done some time before quoting was made available
2327 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2328 (notated using the quote facility) so as to distinguish them from IPv4
2329 keys. This meant that lookups for IP addresses in host lists did not work
2330 for iplsearch lookups.
2332 This has been fixed by arranging for IPv6 addresses to be expressed with
2333 colons if the lookup type is iplsearch. This is not incompatible, because
2334 previously such lookups could never work.
2336 The situation is now rather anomalous, since one *can* have colons in
2337 ordinary lsearch keys. However, making the change in all cases is
2338 incompatible and would probably break a number of configurations.
2340 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2341 version.
2343 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2344 conversion specification without a maximum field width, thereby enabling
2345 a rogue spamd server to cause a buffer overflow. While nobody in their
2346 right mind would setup Exim to query an untrusted spamd server, an
2347 attacker that gains access to a server running spamd could potentially
2348 exploit this vulnerability to run arbitrary code as the Exim user.
2350 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2351 $primary_hostname instead of what libspf2 thinks the hosts name is.
2353 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2354 a directory entry by the name of the lookup key. Previously, if a
2355 symlink pointed to a non-existing file or a file in a directory that
2356 Exim lacked permissions to read, a lookup for a key matching that
2357 symlink would fail. Now it is enough that a matching directory entry
2358 exists, symlink or not. (Bugzilla 503.)
2360 PH/03 The body_linecount and body_zerocount variables are now exported in the
2361 local_scan API.
2363 PH/04 Added the $dnslist_matched variable.
2365 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2366 This means they are set thereafter only if the connection becomes
2367 encrypted.
2369 PH/06 Added the client_condition to authenticators so that some can be skipped
2370 by clients under certain conditions.
2372 PH/07 The error message for a badly-placed control=no_multiline_responses left
2373 "_responses" off the end of the name.
2375 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2377 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2378 (without spaces) instead of just copying the configuration text.
2380 PH/10 Added the /noupdate option to the ratelimit ACL condition.
2382 PH/11 Added $max_received_linelength.
2384 PH/12 Added +ignore_defer and +include_defer to host lists.
2386 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2387 way in which PCRE > 7.0 is built.
2389 PH/14 Implemented queue_only_load_latch.
2391 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2392 MAIL command. The effect was to mangle the value on 64-bit systems.
2394 PH/16 Another patch from the Sieve maintainer.
2396 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2398 PH/18 If a system quota error occurred while trying to create the file for
2399 a maildir delivery, the message "Mailbox is full" was not appended to the
2400 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2401 only to a quota excession during the actual writing of the file.
2403 PH/19 It seems that peer DN values may contain newlines (and other non-printing
2404 characters?) which causes problems in log lines. The DN values are now
2405 passed through string_printing() before being added to log lines.
2407 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
2408 and InterBase are left for another time.)
2410 PH/21 Added message_body_newlines option.
2412 PH/22 Guard against possible overflow in moan_check_errorcopy().
2414 PH/23 POSIX allows open() to be a macro; guard against that.
2416 PH/24 If the recipient of an error message contained an @ in the local part
2417 (suitably quoted, of course), incorrect values were put in $domain and
2418 $local_part during the evaluation of errors_copy.
2421 Exim version 4.67
2422 -----------------
2424 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2425 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2426 Jan Srzednicki.
2428 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2429 issue a MAIL command.
2431 PH/02 In an ACL statement such as
2433 deny dnslists = X!= : X=
2435 if a client was not listed at all, or was listed with a value other than
2436, in the X list, but was listed with in the Y list,
2437 the condition was not true (as it should be), so access was not denied.
2438 The bug was that the ! inversion was incorrectly passed on to the second
2439 item. This has been fixed.
2441 PH/03 Added additional dnslists conditions == and =& which are different from
2442 = and & when the dns lookup returns more than one IP address.
2444 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2445 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2447 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2448 FSYNC, which compiles an option called disable_fsync that allows for
2449 bypassing fsync(). The documentation is heavily laced with warnings.
2451 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2453 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2454 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2455 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2456 including adding "make clean"; (3) Added -fPIC when compiling the test
2457 dynamically loaded module, to get rid of a warning.
2459 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2460 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2461 = 0s. The bug is otherwise harmless.
2463 PH/07 There was a bug in the dovecot authenticator such that the value of
2464 $auth1 could be overwritten, and so not correctly preserved, after a
2465 successful authentication. This usually meant that the value preserved by
2466 the server_setid option was incorrect.
2468 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2470 PH/09 Installed PCRE release 7.0.
2472 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2473 run for batched SMTP input. It is now run at the start of every message
2474 in the batch. While fixing this I discovered that the process information
2475 (output by running exiwhat) was not always getting set for -bs and -bS
2476 input. This is fixed, and it now also says "batched" for BSMTP.
2478 PH/11 Added control=no_pipelining.
2480 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2481 patch, slightly modified), and move the expansion of helo_data till after
2482 the connection is made in the smtp transport (so it can use these
2483 values).
2485 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2487 PH/14 Added log_selector = +pid.
2489 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2491 PH/16 Add ${if forany and ${if forall.
2493 PH/17 Added dsn_from option to vary the From: line in DSNs.
2495 PH/18 Flush SMTP output before performing a callout, unless control =
2496 no_callout_flush is set.
2498 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2499 was true (the default) a successful delivery failed to delete the retry
2500 item, thus causing premature timeout of the address. The bug is now
2501 fixed.
2503 PH/20 Added hosts_avoid_pipelining to the smtp transport.
2505 PH/21 Long custom messages for fakedefer and fakereject are now split up
2506 into multiline responses in the same way that messages for "deny" and
2507 other ACL rejections are.
2509 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2510 with slight modification.
2512 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2513 draft, changing the syntax and factoring some duplicate code".
2515 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2516 for deliveries of the second and subsequent messages over the same SMTP
2517 connection.
2519 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2520 ${reduce, with only minor "tidies".
2522 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2524 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2525 expansion side effects.
2527 PH/27 When a message times out after an over-quota error from an Exim-imposed
2528 quota, the bounce message says "mailbox is full". This message was not
2529 being given when it was a system quota that was exceeded. It now should
2530 be the same.
2532 MH/03 Made $recipients available in local_scan(). local_scan() already has
2533 better access to the recipient list through recipients_list[], but
2534 $recipients can be useful in postmaster-provided expansion strings.
2536 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2537 in the case of a MAIL command with additional options following the
2538 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2539 were accidentally chopped off.
2541 PH/29 SMTP synchronization checks are implemented when a command is read -
2542 there is a check that no more input is waiting when there shouldn't be
2543 any. However, for some commands, a delay in an ACL can mean that it is
2544 some time before the response is written. In this time, more input might
2545 arrive, invalidly. So now there are extra checks after an ACL has run for
2546 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2547 pipelining has not been advertised.
2549 PH/30 MH's patch to allow iscntrl() characters to be list separators.
2551 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2552 returned in the SMTP response when smtp_return_error_details was false.
2553 This has been fixed.
2555 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2556 instead of the C I/O that was originally supplied, because problems were
2557 reported on Solaris.
2559 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2560 Exim which did not show up earlier: it was assuming that a call to
2561 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2562 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2563 was a macro that became an assignment, so it seemed to work. This has
2564 changed to a proper function call with a void return, hence the compile
2565 error. Exim's code has been fixed.
2567 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2568 cpus.
2570 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2572 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2574 PH/37 If a message is not accepted after it has had an id assigned (e.g.
2575 because it turns out to be too big or there is a timeout) there is no
2576 "Completed" line in the log. When some messages of this type were
2577 selected by exigrep, they were listed as "not completed". Others were
2578 picked up by some special patterns. I have improved the selection
2579 criteria to be more general.
2581 PH/38 The host_find_failed option in the manualroute router can now be set
2582 to "ignore", to completely ignore a host whose IP address cannot be
2583 found. If all hosts are ignored, the behaviour is controlled by the new
2584 host_all_ignored option.
2586 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2587 homing or because of multiple MX records with /mx) generated more than
2588 one IP address, and the following item turned out to be the local host,
2589 all the secondary addresses of the first item were incorrectly removed
2590 from the list, along with the local host and any following hosts (which
2591 is what is supposed to happen).
2593 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2594 whoever called Exim into the -H file. In the case of the daemon it was
2595 behaving confusingly. When first started, it used values for whoever
2596 started the daemon, but after a SIGHUP it used the Exim user (because it
2597 calls itself on a restart). I have changed the code so that it now always
2598 uses the Exim user.
2600 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2601 message are rejected with the same error (e.g. no authentication or bad
2602 sender address), and a DATA command is nevertheless sent (as can happen
2603 with PIPELINING or a stupid MUA), the error message that was given to the
2604 RCPT commands is included in the rejection of the DATA command. This is
2605 intended to be helpful for MUAs that show only the final error to their
2606 users.
2608 PH/42 Another patch from the Sieve maintainer.
2610 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2611 Eximstats - Fixed some broken HTML links and added missing column headers
2612 (Jez Hancock).
2613 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2614 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2616 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2618 PH/43 Yet another patch from the Sieve maintainer.
2620 PH/44 I found a way to check for a TCP/IP connection going away before sending
2621 the response to the final '.' that terminates a message, but only in the
2622 case where the client has not sent further data following the '.'
2623 (unfortunately, this is allowed). However, in many cases there won't be
2624 any further data because there won't be any more messages to send. A call
2625 to select() can be used: if it shows that the input is "ready", there is
2626 either input waiting, or the socket has been closed. An attempt to read
2627 the next input character can distinguish the two cases. Previously, Exim
2628 would have sent an OK response which the client would never have see.
2629 This could lead to message repetition. This fix should cure that, at
2630 least in a lot of common cases.
2632 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2633 advertised in response to EHLO.
2636 Exim version 4.66
2637 -----------------
2639 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2640 fixed by 4.65/MH/01 (is this a record?) are fixed:
2642 (i) An empty string was always treated as zero by the numeric comparison
2643 operators. This behaviour has been restored.
2645 (ii) It is documented that the numeric comparison operators always treat
2646 their arguments as decimal numbers. This was broken in that numbers
2647 starting with 0 were being interpreted as octal.
2649 While fixing these problems I realized that there was another issue that
2650 hadn't been noticed. Values of message_size_limit (both the global option
2651 and the transport option) were treated as octal if they started with 0.
2652 The documentation was vague. These values are now always treated as
2653 decimal, and I will make that clear in the documentation.
2656 Exim version 4.65
2657 -----------------
2659 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2660 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2661 versions. (#438)
2663 MH/01 Don't check that the operands of numeric comparison operators are
2664 integers when their expansion is in "skipping" mode (fixes bug
2665 introduced by 4.64-PH/07).
2667 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2668 child addresses, Exim now panics and dies. Previously, because the count
2669 is held in a short int, deliveries were likely to be lost. As such a
2670 large number of recipients for a single message is ridiculous
2671 (performance will be very, very poor), I have chosen to impose a limit
2672 rather than extend the field.
2675 Exim version 4.64
2676 -----------------
2678 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2679 leftover -K file (the existence of which was triggered by #402).
2680 While we were at it, introduced process PID as part of the -K
2681 filename. This should rule out race conditions when creating
2682 these files.
2684 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2685 processing considerably. Previous code took too long for large mails,
2686 triggering a timeout which in turn triggers #401.
2688 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2689 in the DK code in transports.c. sendfile() is not really portable,
2690 hence the _LINUX specificness.
2692 TF/01 In the add_headers option to the mail command in an Exim filter,
2693 there was a bug that Exim would claim a syntax error in any
2694 header after the first one which had an odd number of characters
2695 in the field name.
2697 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2698 callout verification, Exim cached a "reject" for the entire domain. This
2699 is correct for most verifications, but it is not correct for a recipient
2700 verification with use_sender or use_postmaster set, because in that case
2701 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2702 case of MAIL FROM:<> rejection from other early rejections (e.g.
2703 rejection of HELO). When verifying a recipient using a non-null MAIL
2704 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2705 Whatever the result of the callout, the value of the domain cache is
2706 left unchanged (for any other kind of callout, getting as far as trying
2707 RCPT means that the domain itself is ok).
2709 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2710 gcc 4.1.1 threw up.
2712 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2713 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2714 session, the daemon ignores ECONNECT errors and logs others; it now
2715 ignores EPIPE as well.
2717 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2718 (quoted-printable decoding).
2720 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
2721 later the small subsequent patch to fix an introduced bug.
2723 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2725 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2727 PH/08 An error is now given if message_size_limit is specified negative.
2729 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
2730 to be given (somewhat) arbitrary names.
2732 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2733 in 4.64-PH/09.
2735 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2736 miscellaneous code fixes
2738 PH/10 Added the log_reject_target ACL modifier to specify where to log
2739 rejections.
2741 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2742 hostname. This is wrong, because it relates to the incoming message (and
2743 probably the interface on which it is arriving) and not to the outgoing
2744 callout (which could be using a different interface). This has been
2745 changed to use the value of the helo_data option from the smtp transport
2746 instead - this is what is used when a message is actually being sent. If
2747 there is no remote transport (possible with a router that sets up host
2748 addresses), $smtp_active_hostname is used.
2750 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
2751 tweaks were necessary in order to get it to work (see also 21 below):
2752 (a) The code assumed that strncpy() returns a negative number on buffer
2753 overflow, which isn't the case. Replaced with Exim's string_format()
2754 function.
2755 (b) There were several signed/unsigned issues. I just did the minimum
2756 hacking in of casts. There is scope for a larger refactoring.
2757 (c) The code used strcasecmp() which is not a standard C function.
2758 Replaced with Exim's strcmpic() function.
2759 (d) The code set only $1; it now sets $auth1 as well.
2760 (e) A simple test gave the error "authentication client didn't specify
2761 service in request". It would seem that Dovecot has changed its
2762 interface. Fortunately there's a specification; I followed it and
2763 changed what the client sends and it appears to be working now.
2765 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
2766 decoding.
2768 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
2769 address A is aliased to B and C, where B exists and C does not. Without
2770 -v the output is "A verified" because verification stops after a
2771 successful redirection if more than one address is generated. However,
2772 with -v the child addresses are also verified. Exim was outputting "A
2773 failed to verify" and then showing the successful verification for C,
2774 with its parentage. It now outputs "B failed to verify", showing B's
2775 parentage before showing the successful verification of C.
2777 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
2778 look up a TXT record in a specific list after matching in a combined
2779 list.
2781 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2782 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2783 they consult the DNS. I had assumed they would set it the way they
2784 wanted; and indeed my experiments on Linux seem to show that in some
2785 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2786 To be on the safe side, however, I have now made the interface to
2787 host_find_byname() similar to host_find_bydns(), with an argument
2788 containing the DNS resolver options. The host_find_byname() function now
2789 sets these options at its start, just as host_find_bydns() does. The smtp
2790 transport options dns_qualify_single and dns_search_parents are passed to
2791 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
2792 of host_find_byname() use the default settings of RES_DEFNAMES
2793 (qualify_single) but not RES_DNSRCH (search_parents).
2795 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
2796 spool_read_header() do less string testing, by means of a preliminary
2797 switch on the second character of optional "-foo" lines. (This is
2798 overdue, caused by the large number of possibilities that now exist.
2799 Originally there were few.) While I was there, I also converted the
2800 str(n)cmp tests so they don't re-test the leading "-" and the first
2801 character, in the hope this might squeeze out yet more improvement.
2803 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
2804 flag allowing group syntax was set by the header_syntax check but not
2805 turned off, possible causing trouble later; (2) The flag was not being
2806 set at all for the header_verify test, causing "group"-style headers to
2807 be rejected. I have now set it in this case, and also caused header_
2808 verify to ignore an empty address taken from a group. While doing this, I
2809 came across some other cases where the code for allowing group syntax
2810 while scanning a header line wasn't quite right (mostly, not resetting
2811 the flag correctly in the right place). These bugs could have caused
2812 trouble for malformed header lines. I hope it is now all correct.
2814 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
2815 with the "reply" argument non-NULL. The code, however (which originally
2816 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
2817 but it didn't always do it. This confused somebody who was copying the
2818 code for some other use. I have removed all the tests.
2820 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
2821 feature that was used to support insecure browsers during the U.S. crypto
2822 embargo. It requires special client support, and Exim is probably the
2823 only MTA that supported it -- and would never use it because real RSA is
2824 always available. This code has been removed, because it had the bad
2825 effect of slowing Exim down by computing (never used) parameters for the
2826 RSA_EXPORT functionality.
2828 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
2829 authenticator to fail if there's a tab character in the incoming data
2830 (there should never be unless someone is messing about, as it's supposed
2831 to be base64-encoded). Also added, on Timo's advice, the "secured" option
2832 if the connection is using TLS or if the remote IP is the same as the
2833 local IP, and the "valid-client-cert option" if a client certificate has
2834 been verified.
2836 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
2837 authenticators. This can be used for authorization after authentication
2838 succeeds. (In the case of plaintext, it servers for both authentication
2839 and authorization.)
2841 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
2842 if any retry times were supplied.
2844 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
2845 connection, where there is no client IP address to check. In this
2846 situation, the verify now always succeeds.
2848 PH/25 Applied John Jetmore's -Mset patch.
2850 PH/26 Added -bem to be like -Mset, but loading a message from a file.
2852 PH/27 In a string expansion for a processed (not raw) header when multiple
2853 headers of the same name were present, leading whitespace was being
2854 removed from all of them, but trailing whitespace was being removed only
2855 from the last one. Now trailing whitespace is removed from each header
2856 before concatenation. Completely empty headers in a concatenation (as
2857 before) are ignored.
2859 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
2860 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
2862 PH/29 [Removed. This was a change that I later backed out, and forgot to
2863 correct the ChangeLog entry (that I had efficiently created) before
2864 committing the later change.]
2866 PH/30 Exim was sometimes attempting to deliver messages that had suffered
2867 address errors (4xx response to RCPT) over the same connection as other
2868 messages routed to the same hosts. Such deliveries are always "forced",
2869 so retry times are not inspected. This resulted in far too many retries
2870 for the affected addresses. The effect occurred only when there were more
2871 hosts than the hosts_max_try setting in the smtp transport when it had
2872 the 4xx errors. Those hosts that it had tried were not added to the list
2873 of hosts for which the message was waiting, so if all were tried, there
2874 was no problem. Two fixes have been applied:
2876 (i) If there are any address or message errors in an SMTP delivery, none
2877 of the hosts (tried or untried) are now added to the list of hosts
2878 for which the message is waiting, so the message should not be a
2879 candidate for sending over the same connection that was used for a
2880 successful delivery of some other message. This seems entirely
2881 reasonable: after all the message is NOT "waiting for some host".
2882 This is so "obvious" that I'm not sure why it wasn't done
2883 previously. Hope I haven't missed anything, but it can't do any
2884 harm, as the worst effect is to miss an optimization.
2886 (ii) If, despite (i), such a delivery is accidentally attempted, the
2887 routing retry time is respected, so at least it doesn't keep
2888 hammering the server.
2890 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
2891 in ${readsocket because some servers need this prod.
2893 PH/32 Added some extra debug output when updating a wait-xxx database.
2895 PH/33 The hint "could be header name not terminated by colon", which has been
2896 given for certain expansion errors for a long time, was not being given
2897 for the ${if def:h_colon_omitted{... case.
2899 PH/34 The spec says: "With one important exception, whenever a domain list is
2900 being scanned, $domain contains the subject domain." There was at least
2901 one case where this was not true.
2903 PH/35 The error "getsockname() failed: connection reset by peer" was being
2904 written to the panic log as well as the main log, but it isn't really
2905 panic-worthy as it just means the connection died rather early on. I have
2906 removed the panic log writing for the ECONNRESET error when getsockname()
2907 fails.
2909 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
2910 runs only) independently of the message's sender address. This meant
2911 that, if the 4xx error was in fact related to the sender, a different
2912 message to the same recipient with a different sender could confuse
2913 things. In particular, this can happen when sending to a greylisting
2914 server, but other circumstances could also provoke similar problems.
2915 I have changed the default so that the retry time for these errors is now
2916 based a combination of the sender and recipient addresses. This change
2917 can be overridden by setting address_retry_include_sender=false in the
2918 smtp transport.
2920 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
2921 remote server are returned as part of bounce messages. This was not
2922 happening for LMTP over a pipe (the lmtp transport), but now it is the
2923 same for both kinds of LMTP.
2925 PH/38 Despite being documented as not happening, Exim was rewriting addresses
2926 in header lines that were in fact CNAMEs. This is no longer the case.
2928 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
2929 and queue runs started by the daemon processed all messages. This has
2930 been fixed so that -R and -S can now usefully be given with -q<time>.
2932 PH/40 Import PCRE release 6.7 (fixes some bugs).
2934 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
2936 PH/42 Give an error if -q is specified more than once.
2938 PH/43 Renamed the variables $interface_address and $interface_port as
2939 $received_ip_address and $received_port, to make it clear that these
2940 values apply to message reception, and not to the outgoing interface when
2941 a message is delivered. (The old names remain recognized, of course.)
2943 PH/44 There was no timeout on the connect() call when using a Unix domain
2944 socket in the ${readsocket expansion. There now is.
2946 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
2947 be meaningful with "accept".
2949 SC/01 Eximstats V1.43
2950 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
2952 SC/02 Eximstats V1.44
2953 Use a glob alias rather than an array ref in the generated
2954 parser. This improves both readability and performance.
2956 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
2957 Collect SpamAssassin and rejection statistics.
2958 Don't display local sender or destination tables unless
2959 there is data to show.
2960 Added average volumes into the top table text output.
2962 SC/04 Eximstats V1.46
2963 Collect data on the number of addresses (recipients)
2964 as well as the number of messages.
2966 SC/05 Eximstats V1.47
2967 Added 'Message too big' to the list of mail rejection
2968 reasons (thanks to Marco Gaiarin).
2970 SC/06 Eximstats V1.48
2971 Mainlog lines which have GMT offsets and are too short to
2972 have a flag are now skipped.
2974 SC/07 Eximstats V1.49 (Alain Williams)
2975 Added the -emptyok flag.
2977 SC/08 Eximstats V1.50
2978 Fixes for obtaining the IP address from reject messages.
2980 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
2981 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
2982 whitespace changes from 4.64-PH/27
2984 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
2985 match 4.64-PH/13
2987 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
2988 are found, allow negative numbers in numeric criteria)
2990 JJ/06 exipick.20061117.2, added new $message_body_missing variable
2992 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
2993 to match changes made in 4.64-PH/43
2995 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
2997 PH/47 Put in an explicit test for a DNS lookup of an address record where the
2998 "domain" is actually an IP address, and force a failure. This locks out
2999 those revolvers/nameservers that support "A-for-A" lookups, in
3000 contravention of the specifications.
3002 PH/48 When a host name was looked up from an IP address, and the subsequent
3003 forward lookup of the name timed out, the host name was left in
3004 $sender_host_name, contrary to the specification.
3006 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
3007 restricted to single-key lookups, Exim was not diagnosing an error if
3008 * or *@ was used with a query-style lookup.
3010 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
3012 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
3013 long ago, but noone interested enough thought of it. Let's just say that
3014 the "1.1" means that there are some new functions that weren't there at
3015 some point in the past.
3017 PH/51 Error processing for expansion failure of helo_data from an smtp
3018 transport during callout processing was broken.
3020 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
3021 tested/used via the -bh/-bhc/-bs options.
3023 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
3024 bug, fixed in subsequent PCRE releases).
3026 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
3027 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
3029 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
3032 Exim version 4.63
3033 -----------------
3035 SC/01 Use a glob alias rather than an array ref in eximstats generated
3036 parser. This improves both readability and performance.
3038 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
3039 Don't display local sender or destination tables in eximstats unless
3040 there is data to show.
3041 Added average volumes into the eximstats top table text output.
3043 SC/03 Collect data on the number of addresses (recipients) as well
3044 as the number of messages in eximstats.
3046 TF/01 Correct an error in the documentation for the redirect router. Exim
3047 does (usually) call initgroups() when daemonizing.
3049 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
3050 with consistent privilege compared to when running as a daemon.
3052 TF/03 Note in the spec that $authenticated_id is not set for local
3053 submissions from trusted users.
3055 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
3056 Thanks to Dean Brooks <> for the patch.
3058 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
3059 by adding some example configuration directives to the default
3060 configuration file. A little bit of work is required to uncomment the
3061 directives and define how usernames and passwords are checked, but
3062 there is now a framework to start from.
3064 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
3065 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
3066 without this. I don't know how relevant this is to other LDAP libraries.
3068 PH/02 Add the verb name to the "unknown ACL verb" error.
3070 PH/03 Magnus Holmgren's patch for filter_prepend_home.
3072 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
3074 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
3075 directory not expanded when it should be if an expanded home directory
3076 was set for the address (which is overridden by the transport).
3078 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
3079 libradius.
3081 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
3082 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
3083 because it is too late at that time, and has no effect.
3085 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
3086 security issue with \' (bugzilla #107). I could not use the
3087 PQescapeStringConn() function, because it needs a PGconn value as one of
3088 its arguments.
3090 PH/08 When testing addresses using -bt, indicate those final addresses that
3091 are duplicates that would not cause an additional delivery. At least one
3092 person was confused, thinking that -bt output corresponded to deliveries.
3093 (Suppressing duplicates isn't a good idea as you lose the information
3094 about possibly different redirections that led to the duplicates.)
3096 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
3097 systems where poll() doesn't work, in particular OS X.
3099 PH/10 Added more information to debugging output for retry time not reached.
3101 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
3102 operations in malware.c.
3104 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
3105 signatures.
3107 PH/13 If write_rejectlog was set false when logging was sent to syslog with
3108 syslog_duplication set false, log lines that would normally be written
3109 both the the main log and to the reject log were not written to syslog at
3110 all.
3112 PH/14 In the default configuration, change the use of "message" in ACL warn
3113 statements to "add_header".
3115 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
3116 not followed by a command (e.g. "seen endif").
3118 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
3119 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
3120 latter.
3122 PH/17 Added extra conditions to the default value of delay_warning_condition
3123 so that it is now:
3125 ${if or { \
3126 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
3127 { match{$h_precedence:}{(?i)bulk|list|junk} } \
3128 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
3129 }{no}{yes}}
3131 The Auto-Submitted: and various List- headers are standardised, whereas I
3132 don't think Precedence: ever was.
3134 PH/18 Refactored debugging code in route_finduser() to show more information,
3135 in particular, the error code if getpwnam() issues one.
3137 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
3138 This is apparently needed in addition to the PH/07 change above to avoid
3139 any possible encoding problems.
3141 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
3142 but not after initializing Perl.
3144 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
3145 output them only if debugging. By default they are written stderr,
3146 apparently, which is not desirable.
3148 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
3149 queries.
3151 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
3152 --not options
3154 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
3156 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
3157 authenticated or an ident call has been made. Suppress the default
3158 values for $authenticated_id and $authenticated_sender (but permit -oMai
3159 and -oMas) when testing with -bh.
3161 PH/24 Re-jigged the order of the tests in the default configuration so that the
3162 tests for valid domains and recipients precede the DNS black list and CSA
3163 tests, on the grounds that those ones are more expensive.
3165 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
3166 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
3167 This bug exists in every version of Exim that I still have, right back to
3168 0.12.
3170 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
3171 However, an attempt to turn on case-sensitivity in a regex key by
3172 including (?-i) didn't work because the subject string was already
3173 lowercased, and the effects were non-intuitive. It turns out that a
3174 one-line patch can be used to allow (?-i) to work as expected.
3177 Exim version 4.62
3178 -----------------
3180 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
3181 other effects) broke the use of negated acl sub-conditions.
3183 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
3184 patch).
3186 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
3187 "Deny" causes Exim to reject the incoming connection with a 554 error.
3188 Unfortunately, if there is a major crisis, such as a disk failure,
3189 tcp-wrappers gives "deny", whereas what one would like would be some
3190 kind of temporary error. A kludge has been added to help with this.
3191 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
3192 554 error is used if errno is still zero or contains ENOENT (which occurs
3193 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
3194 451 error is used.
3196 PH/03 Add -lutil to the default FreeBSD LIBS setting.
3198 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
3199 errors. Otherwise a message that provokes a temporary error (when other
3200 messages do not) can cause a whole host to time out.
3202 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
3203 addresses were routed directly to files or pipes from a redirect router.
3204 File deliveries just didn't batch; pipe deliveries might have suffered
3205 odd errors.
3207 PH/06 A failure to get a lock for a hints database would erroneously always say
3208 "Failed to get write lock", even when it was really a read lock.
3210 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
3211 of 0600. This has been changed to use the value of the lockfile_mode
3212 option (which defaults to 0600).
3214 PH/08 Applied small patch from the Sieve maintainer.
3216 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
3217 folder from quota calculations, a direct delivery into this folder messed
3218 up the contents of the maildirsize file. This was because the regex was
3219 used only to exclude .Trash (or whatever) when the size of the mailbox
3220 was calculated. There was no check that a delivery was happening into an
3221 excluded directory. This bug has been fixed by ignoring all quota
3222 processing for deliveries into excluded directories.
3224 PH/10 Added the maildirfolder_create_regex option to appendfile.
3227 Exim version 4.61
3228 -----------------
3230 PH/01 The code for finding all the local interface addresses on a FreeBSD
3231 system running IPv6 was broken. This may well have applied to all BSD
3232 systems, as well as to others that have similar system calls. The broken
3233 code found IPv4 interfaces correctly, but gave incorrect values for the
3234 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
3235 that it would not match correctly against @[] and not recognize the IPv6
3236 addresses as local.
3238 PH/02 The ipliteral router was not recognizing addresses of the form user@
3239 [ipv6:....] because it didn't know about the "ipv6:" prefix.
3241 PH/03 Added disable_ipv6.
3243 PH/04 Changed $reply_address to use the raw form of the headers instead of the
3244 decoded form, because it is most often used to construct To: headers
3245 lines in autoreplies, and the decoded form may well be syntactically
3246 invalid. However, $reply_address has leading white space removed, and all
3247 newlines turned into spaces so that the autoreply transport does not
3248 grumble.
3250 PH/05 If group was specified without a user on a router, and no group or user
3251 was specified on a transport, the group from the router was ignored.
3253 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
3254 for visible compile-time settings that can be used to change these
3255 numbers, for those that want even more. Backwards compatibility with old
3256 spool files has been maintained. However, going back to a previous Exim
3257 release will lost any variables that are in spool files.
3259 PH/07 Two small changes when running in the test harness: increase delay when
3260 passing a TCP/IP connection to a new process, in case the original
3261 process has to generate a bounce, and remove special handling of
3262 (sic), which is no longer necessary.
3264 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
3265 be the same on different OS.
3267 PH/09 Moved a debug statement in filter processing to avoid a race problem when
3268 testing.
3270 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
3271 whether --show-vars was specified or not
3273 JJ/02 exipick: Added support for new ACL variable spool format introduced
3274 in 4.61-PH/06
3276 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
3277 syntactically invalid From: or Reply-to: line, and a filter used this to
3278 generate an autoreply, and therefore failed to obtain an address for the
3279 autoreply, Exim could try to deliver to a non-existent relative file
3280 name, causing unrelated and misleading errors. What now happens is that
3281 it logs this as a hard delivery error, but does not attempt to create a
3282 bounce message.
3284 PH/11 The exinext utility has a -C option for testing purposes, but although
3285 the given file was scanned by exinext itself; it wasn't being passed on
3286 when Exim was called.
3288 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
3289 an end-of-file indication when reading a command response.
3291 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
3292 compiled. In many other places in Exim, IPv6 addresses are always
3293 recognized, so I have changed this. It also means that IPv4 domain
3294 literals of the form [IPV4:n.n.n.n] are now always recognized.
3296 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
3297 used if the router is not running as root, for example, when verifying at
3298 ACL time, or when using -bh. The debugging output from this situation was
3299 non-existent - all you got was a failure to exec. I have made two
3300 changes:
3302 (a) Failures to set uid/gid, the current directory, or a process leader
3303 in a subprocess such as that created by queryprogram now generate
3304 suitable debugging output when -d is set.
3306 (b) The queryprogram router detects when it is not running as root,
3307 outputs suitable debugging information if -d is set, and then runs
3308 the subprocess without attempting to change uid/gid.
3310 PH/15 Minor change to Makefile for building test_host (undocumented testing
3311 feature).
3313 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
3314 additional section of a DNS packet that returns MX or SRV records.
3315 Instead, it always explicitly searches for A/AAAA records. This avoids
3316 major problems that occur when a DNS server includes only records of one
3317 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
3318 fixed another bug: if SRV records were looked up and the corresponding
3319 address records were *not* found in the additional section, the port
3320 values from the SRV records were lost.
3322 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
3323 using the correct key (the original address) when searching the retry
3324 rules in order to find which one to use for generating the retry hint.
3326 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
3327 adding the default one. Similarly, if it contains a Reply-To: header, the
3328 errors_reply_to option, if set, is not used.
3330 PH/19 When calculating a retry time, Exim used to measure the "time since
3331 failure" by looking at the "first failed" field in the retry record. Now
3332 it does not use this if it is later than than the arrival time of the
3333 message. Instead it uses the arrival time. This makes for better
3334 behaviour in cases where some deliveries succeed, thus re-setting the
3335 "first failed" field. An example is a quota failure for a huge message
3336 when small messages continue to be delivered. Without this change, the
3337 "time since failure" will always be short, possible causing more frequent
3338 delivery attempts for the huge message than are intended.
3339 [Note: This change was subsequently modified - see PH/04 for 4.62.]
3341 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
3342 $1, $2, $3) because the numerical variables can be reset during some
3343 expansion items (e.g. "match"), thereby losing the authentication data.
3345 PH/21 Make -bV show the size of off_t variables so that the test suite can
3346 decide whether to run tests for quotas > 2G.
3348 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
3349 mailbox_size, and mailbox_filecount in the appendfile transport. If a
3350 filecount value is greater than 2G or if a quota value is greater than 2G
3351 on a system where the size of off_t is not greater than 4, a panic error
3352 is given.
3354 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
3355 never match. The debug and -bh output now contains an explicit error
3356 message indicating a malformed IPv4 address or mask.
3358 PH/24 An host item such as was being treated as the IP address
3359 without a mask. Now it is not recognized as an IP address, and
3360 PH/23 above applies.
3362 PH/25 Do not write to syslog when running in the test harness. The only
3363 occasion when this arises is a failure to open the main or panic logs
3364 (for which there is an explicit test).
3366 PH/26 Added the /no_tell option to "control=freeze".
3368 PH/27 If a host name lookup failed very early in a connection, for example, if
3369 the IP address matched host_lookup and the reverse lookup yielded a name
3370 that did not have a forward lookup, an error message of the form "no IP
3371 address found for host (during SMTP connection from NULL)"
3372 could be logged. Now it outputs the IP address instead of "NULL".
3374 PH/28 An enabling patch from MH: add new function child_open_exim2() which
3375 allows the sender and the authenticated sender to be set when
3376 submitting a message from within Exim. Since child_open_exim() is
3377 documented for local_scan(), the new function should be too.
3379 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
3380 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
3381 results in an empty string is now treated as unset.
3383 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
3385 PH/31 Added sender_verify_fail logging option.
3387 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
3388 needed by RFC 822 but not by RFC 2822 was commented out. I have now
3389 tidied the source and removed it altogether.
3391 PH/33 When a queue run was abandoned because the load average was too high, a
3392 log line was always written; now it is written only if the queue_run log
3393 selector is set. In addition, the log line for abandonment now contains
3394 information about the queue run such as the pid. This is always present
3395 in "start" and "stop" lines but was omitted from the "abandon" line.
3397 PH/34 Omit spaces between a header name and the colon in the error message that
3398 is given when verify = headers_syntax fails (if there are lots of them,
3399 the message gets confusing).
3401 PH/35 Change the default for dns_check_names_pattern to allow slashes within
3402 names, as there are now some PTR records that contain slashes. This check
3403 is only to protect against broken name servers that fall over on strange
3404 characters, so the fact that it applies to all lookups doesn't matter.
3406 PH/36 Now that the new test suite is complete, we can remove some of the
3407 special code in Exim that was needed for the old test suite. For example,
3408 sorting DNS records because real resolvers return them in an arbitrary
3409 order. The new test suite's fake resolver always returns records in the
3410 same order.
3412 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
3413 bounces) except when queue_only is set, to avoid logging races between
3414 the different processes.
3416 PH/38 Panic-die if .include specifies a non-absolute path.
3418 PH/39 A tweak to the "H" retry rule from its user.
3420 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
3421 a label. They prevented compilation on older perls.
3423 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
3424 a warning to be raised on newish perls.
3426 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
3427 on queue. Changes to match documented behaviour of showing count of
3428 messages matching specified criteria.
3430 PH/40 Changed the default ident timeout from 30s to 5s.
3432 PH/41 Added support for the use of login_cap features, on those BSD systems
3433 that have them, for controlling the resources used by pipe deliveries.
3435 PH/42 The content-scanning code uses fopen() to create files in which to put
3436 message data. Previously it was not paying any attention to the mode of
3437 the files. Exim runs with umask(0) because the rest of the code creates
3438 files with open(), and sets the required mode explicitly. Thus, these
3439 files were ending up world-writeable. This was not a big issue, because,
3440 being within the spool directory, they were not world-accessible. I have
3441 created a function called modefopen, which takes an additional mode
3442 argument. It sets umask(777), creates the file, chmods it to the required
3443 mode, then resets the umask. All the relevant calls to fopen() in the
3444 content scanning code have been changed to use this function.
3446 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
3447 to 24 hours. This avoids potential overflow problems when processing G
3448 and H retry rules. I suspect nobody ever tinkers with this value.
3450 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
3452 PH/45 When the plaintext authenticator is running as a client, the server's
3453 challenges are checked to ensure they are valid base64 strings. By
3454 default, the authentication attempt is cancelled if an invalid string is
3455 received. Setting client_ignore_invalid_base64 true ignores these errors.
3456 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
3457 they are received. Thus, the responses can be made to depend on the
3458 challenges. If an invalid string is ignored, an empty string is placed in
3459 the variable.
3461 PH/46 Messages that are created by the autoreply transport now contains a
3462 References: header, in accordance with RFCs 2822 and 3834.
3464 PH/47 Added authenticated_sender_force to the smtp transport.
3466 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
3468 PH/49 Installed latest patch from the Sieve maintainer.
3470 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
3471 was also set, the appendfile transport was unnecessarily scanning a
3472 directory of message files (e.g. for maildir delivery) to find the count
3473 of files (along with the size), even though it did not need this
3474 information. It now does the scan only if it needs to find either the
3475 size of the count of files.
3477 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
3479 PH/52 Two bugs concerned with error handling when the smtp transport is
3480 used in LMTP mode:
3482 (i) Exim was not creating retry information for temporary errors given
3483 for individual recipients after the DATA command when the smtp transport
3484 was used in LMTP mode. This meant that they could be retried too
3485 frequently, and not timed out correctly.
3487 (ii) Exim was setting the flag that allows error details to be returned
3488 for LMTP errors on RCPT commands, but not for LMTP errors for individual
3489 recipients that were returned after the DATA command.
3491 PH/53 This is related to PH/52, but is more general: for any failing address,
3492 when detailed error information was permitted to be returned to the
3493 sender, but the error was temporary, then after the final timeout, only
3494 "retry timeout exceeded" was returned. Now it returns the full error as
3495 well as "retry timeout exceeded".
3497 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
3498 do this, and (what is worse) MTAs that accept it.
3500 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
3501 will now be deprecated.
3503 PH/56 New os.c-cygwin from the Cygwin maintainer.
3505 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
3506 formats (previously only available in exim formats via -bpr, -bpru,
3507 and -bpra. Now also available in native and exiqgrep formats)
3509 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
3510 with very large, slow to parse queues
3512 JJ/08 exipick: added ! as generic prefix to negate any criteria format
3514 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
3516 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
3517 responses to authentication challenges, though it was showing the
3518 challenges; (ii) I've removed the CR characters from the debug output for
3519 SMTP output lines.
3521 PH/58 Allow for the insertion of a newline as well as a space when a string
3522 is turned into more than one encoded-word during RFC 2047 encoding. The
3523 Sieve code now uses this.
3525 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
3526 data_4xx, lost_connection, tls_required.
3528 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
3529 message was being sent as an SMTP response.
3531 PH/61 Add -l and -k options to exicyclog.
3533 PH/62 When verifying, if an address was redirected to one new address, so that
3534 verification continued, and the new address failed or deferred after
3535 having set something in $address_data, the value of $address_data was not
3536 passed back to the ACL. This was different to the case when no
3537 redirection occurred. The value is now passed back in both cases.
3539 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
3540 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
3541 use login_cap.h, so on its own it isn't the distinguishing feature. The
3542 new name refers directly to the setclassresources() function.
3544 PH/65 Added configuration files for NetBSD3.
3546 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
3548 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
3549 is preferred over IPv4.
3551 PH/68 The bounce_return_message and bounce_return_body options were not being
3552 honoured for bounces generated during the reception of non-SMTP messages.
3553 In particular, this applied to messages rejected by the ACL. This bug has
3554 been fixed. However, if bounce_return_message is true and bounce_return_
3555 body is false, the headers that are returned for a non-SMTP message
3556 include only those that have been read before the error was detected.
3557 (In the case of an ACL rejection, they have all been read.)
3559 PH/69 The HTML version of the specification is now built in a directory called
3560 spec_html instead of spec.html, because the latter looks like a path with
3561 a MIME-type, and this confuses some software.
3563 PH/70 Catch two compiler warnings in sieve.c.
3565 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
3566 function verify_get_ident() calls ip_connect() to connect a socket, but
3567 if the "connect()" function timed out, ip_connect() used to close the
3568 socket. However, verify_get_ident() also closes the socket later, and in
3569 between Exim writes to the log, which may get opened at this point. When
3570 the socket was closed in ip_connect(), the log could get the same file
3571 descriptor number as the socket. This naturally causes chaos. The fix is
3572 not to close the socket in ip_connect(); the socket should be closed by
3573 the function that creates it. There was only one place in the code where
3574 this was missing, in the iplookup router, which I don't think anybody now
3575 uses, but I've fixed it anyway.
3577 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
3578 well as to direct DNS lookups. Otherwise the handling of names in host
3579 lists is inconsistent and therefore confusing.
3582 Exim version 4.60
3583 -----------------
3585 PH/01 Two changes to the default runtime configuration:
3587 (1) Move the checks for relay_from_hosts and authenticated clients from
3588 after to before the (commented out) DNS black list checks.
3590 (2) Add control=submission to the relay_from_hosts and authenticated
3591 clients checks, on the grounds that messages accepted by these
3592 statements are most likely to be submissions.
3594 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
3596 (1) Generate an error if the third argument for the ${prvs expansion is
3597 not a single digit.
3599 (2) Treat a missing third argument of ${prvscheck as if it were an empty
3600 string.
3602 (3) Reset the variables that are obtained from the first argument of
3603 ${prvscheck and used in the second argument before leaving the code,
3604 because their memory is reclaimed, so using them afterwards may do
3605 silly things.
3607 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
3608 one (it's much easier than Tom thought :-).
3610 (5) Because of (4), we can now allow for the use of $prvscheck_result
3611 inside the third argument.
3613 PH/03 For some reason, the default setting of PATH when running a command from
3614 a pipe transport was just "/usr/bin". I have changed it to
3615 "/bin:/usr/bin".
3618 anything to be listed in the output from -bV.
3620 PH/05 When a filter generated an autoreply, the entire To: header line was
3621 quoted in the delivery log line, like this:
3623 => >A.N.Other <ano@some.domain> <original@ddress> ...
3625 This has been changed so that it extracts the operative address. There
3626 may be more than one such address. If so, they are comma-separated, like
3627 this:
3629 => >ano@some.domain,ona@other.domain <original@ddress> ...
3631 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
3632 command, (for example, EHLO []) and the client's IP address was
3633 not being looked up in the rDNS to get a host name, Exim was showing the
3634 IP address twice in Received: lines, even though the IP addresses were
3635 identical. For example:
3637 Received: from [] (helo=[])
3639 However, if the real host name was known, it was omitting the HELO data
3640 if it matched the actual IP address. This has been tidied up so that it
3641 doesn't show the same IP address twice.
3643 PH/07 When both +timestamp and +memory debugging was on, the value given by
3644 $tod_xxx expansions could be wrong, because the tod_stamp() function was
3645 called by the debug printing, thereby overwriting the timestamp buffer.
3646 Debugging no longer uses the tod_stamp() function when +timestamp is set.
3648 PH/08 When the original message was included in an autoreply transport, it
3649 always said "this is a copy of the message, including all the headers",
3650 even if body_only or headers_only was set. It now gives an appropriate
3651 message.
3653 PH/09 Applied a patch from the Sieve maintainer which:
3655 o fixes some comments
3656 o adds the (disabled) notify extension core
3657 o adds some debug output for the result of if/elsif tests
3658 o points to the current vacation draft in the documentation
3659 and documents the missing references header update
3661 and most important:
3663 o fixes a bug in processing the envelope test (when testing
3664 multiple envelope elements, the last element determined the
3665 result)
3667 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
3668 Electronic Mail") by including:
3670 Auto-submitted: auto-generated
3672 in the messages that it generates (bounce messages and others, such as
3673 warnings). In the case of bounce messages for non-SMTP messages, there was
3674 also a typo: it was using "Auto_submitted" (underscore instead of
3675 hyphen). Since every message generated by Exim is necessarily in response
3676 to another message, thes have all been changed to:
3678 Auto-Submitted: auto-replied
3680 in accordance with these statements in the RFC:
3682 The auto-replied keyword:
3684 - SHOULD be used on messages sent in direct response to another
3685 message by an automatic process,
3687 - MUST NOT be used on manually-generated messages,
3689 - MAY be used on Delivery Status Notifications (DSNs) and Message
3690 Disposition Notifications (MDNs),
3692 - MUST NOT be used on messages generated by automatic or periodic
3693 processes, except for messages which are automatic responses to
3694 other messages.
3696 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
3697 to the default Received: header definition.
3699 PH/12 Added log selector acl_warn_skipped (default on).
3701 PH/13 After a successful wildlsearch lookup, discard the values of numeric
3702 variables because (a) they are in the wrong storage pool and (b) even if
3703 they were copied, it wouldn't work properly because of the caching.
3705 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
3706 checking when decoding. Apparently there are clients that generate
3707 overlong encoded strings. Why am I not surprised?
3709 PH/15 If the first argument of "${if match_address" was not empty, but did not
3710 contain an "@" character, Exim crashed. Now it writes a panic log message
3711 and treats the condition as false.
3713 PH/16 In autoreply, treat an empty string for "once" the same as unset.
3715 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
3716 extension "envelope-auth". The code is finished and in agreement with
3717 other implementations, but there is no documentation so far and in fact,
3718 nobody wrote the draft yet. This extension is currently #undef'ed, thus
3719 not changing the active code.
3721 Print executed "if" and "elsif" statements when debugging is used. This
3722 helps a great deal to understand what a filter does.
3724 Document more things not specified clearly in RFC3028. I had all this
3725 sorted out, when out of a sudden new issues came to my mind. Oops."
3727 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
3728 (Bugzilla #53).
3730 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
3731 canonical form (as documented). However, after a host name lookup from
3732 the IP address, check_host() was doing a simple string comparison with
3733 addresses acquired from the DNS when checking that the found name did
3734 have the original IP as one of its addresses. Since any found IPv6
3735 addresses are likely to be in abbreviated form, the comparison could
3736 fail. Luckily, there already exists a function for doing the comparison
3737 by converting both addresses to binary, so now that is used instead of
3738 the text comparison.
3740 PH/20 There was another similar case to PH/19, when a complete host name was
3741 given in a host list; looking up its IP address could give an abbreviated
3742 form, whereas the current host's name might or might not be abbreviated.
3743 The same fix has been applied.
3746 Exim version 4.54
3747 -----------------
3749 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
3750 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
3751 It now does.
3753 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
3754 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
3756 PH/03 Typo: missing ".o" in src/pcre/Makefile.
3758 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
3759 header line, restrict the check to what is listed in RFCs 2369 and 2929.
3760 Also, for "Auto-Submitted", treat anything other than "no" as
3761 non-personal, in accordance with RFC 3834. (Previously it treated
3762 anything starting "auto-" as non-personal.)
3764 TF/01 The control=submission/name=... option had a problem with syntax
3765 errors if the name included a slash character. The /name= option
3766 now slurps the rest of the string, so it can include any characters
3767 but it must come last in the list of options (after /sender_retain
3768 or /domain=).
3770 PH/05 Some modifications to the interface to the fake nameserver for the new
3771 testing suite.
3775 Exim version 4.53
3776 -----------------
3778 TK/01 Added the "success_on_redirect" address verification option. See
3779 NewStuff for rationale and an example.
3781 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
3783 PH/02 Patch to exigrep to allow it to work on syslog lines.
3785 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
3786 fread() to skip over the body file's header line, because in Cygwin the
3787 header line is locked and is inaccessible.
3789 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
3790 co-exist for some time) to make it clear that it is the Exim ID that is
3791 referenced, not the Message-ID: header line.
3793 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
3794 string_format() function, because snprintf() does not exist on all
3795 operating systems.
3797 PH/06 The use of forbid_filter_existstest now also locks out the use of the
3798 ${stat: expansion item.
3800 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
3801 protocol synchronization error", to keep the pedants happy.
3803 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
3804 well as for IRIX systems, when gcc is being used. See the host.c source
3805 file for comments.
3807 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
3809 PH/10 Named domain lists were not working if used in a queue_smtp_domains
3810 setting.
3812 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
3813 transport and to the smtp transport in LMTP mode.
3815 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
3817 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
3818 run a filter in a subprocess. This could lead to confusion in subsequent
3819 lookups in the parent process. There should also be a search_tidyup() at
3820 the end of the subprocess.
3822 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
3823 only if the host matched helo_try_verify_hosts, which caused the
3824 verification to occur when the EHLO/HELO command was issued. The ACL just
3825 tested the remembered result. Now, if a previous verification attempt has
3826 not happened, "verify = helo" does it there and then.
3828 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
3830 TK/03 Fix log output including CR from clamd.
3832 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
3833 exist provoked a memory error which could cause a segfault.
3835 PH/15 Installed PCRE 6.2
3837 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
3839 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
3840 of the problem. Specifically, suggested +O2 rather than +O1 for the
3841 HP-UX compiler.
3843 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
3845 PH/20 If a delivery was routed to a non-standard port by means of an SRV
3846 record, the port was not correctly logged when the outgoing_port log
3847 selector was set (it logged the transort's default port).
3849 PH/21 Added support for host-specific ports to manualroute, queryprogram,
3850 fallback_hosts, and "hosts" in the smtp transport.
3852 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
3853 host errors such as "Connection refused".
3855 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
3856 authentication with radiusclient 0.4.9:
3858 - Error returned from rc_read_config was caught wrongly
3859 - Username/password not passed on to radius server due to wrong length.
3861 The presumption is that some radiusclient API changes for 4.51/PH/17
3862 were not taken care of correctly. The code is still untested by me (my
3863 Linux distribution still has 0.3.2 of radiusclient), but it was
3864 contributed by a Radius user.
3866 PH/24 When doing a callout, the value of $domain wasn't set correctly when
3867 expanding the "port" option of the smtp transport.
3869 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
3870 while reading a MIME header. Thanks to Tom Hughes for a patch.
3872 PH/24 Include config.h inside local_scan.h so that configuration settings are
3873 available.
3875 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
3876 that in an ACL for RCPT (for example), you can examine exactly what was
3877 received.
3879 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
3880 commands, but it was not correctly comparing the address with the actual
3881 client host address. Thus, it would show the EHLO address in Received:
3882 header lines when this was not necessary.
3884 PH/27 Added the % operator to ${eval:}.
3886 PH/28 Exim tries to create and chdir to its spool directory when it starts;
3887 it should be ignoring failures (because with -C, for example, it has lost
3888 privilege). It wasn't ignoring creation failures other than "already
3889 exists".
3891 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
3892 -bV or -d is used.
3894 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
3895 because an input line was too long, either on its own, or by virtue of
3896 too many continuations, the temporary file was not being removed, and the
3897 return code was incorrect.
3899 PH/31 Missing "BOOL" in function definition in filtertest.c.
3901 PH/32 Applied Sieve patches from the maintainer.
3903 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
3905 PH/33 Added "verify = not_blind".
3907 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
3908 Local/Makefile (with some defaults set). These are used in built scripts
3909 such as exicyclog, but they have never been used in the exim_install
3910 script (though there are many overriding facilities there). I have
3911 arranged that the exim_install script now takes note of these two
3912 settings.
3914 PH/35 Installed configuration files for Dragonfly.
3916 PH/36 When a locally submitted message by a trusted user did not contain a
3917 From: header, and the sender address was obtained from -f or from an SMTP
3918 MAIL command, and the trusted user did not use -F to supply a sender
3919 name, $originator_name was incorrectly used when constructing a From:
3920 header. Furthermore, $originator_name was used for submission mode
3921 messages from external hosts without From: headers in a similar way,
3922 which is clearly wrong.
3924 PH/37 Added control=suppress_local_fixups.
3926 PH/38 When log_selector = +received_sender was set, and the addition of the
3927 sender made the log line's construction buffer exactly full, or one byte
3928 less than full, an overflow happened when the terminating "\n" was
3929 subsequently added.
3931 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
3932 when the result of a list match is failure because a DNS lookup failed.
3934 PH/40 RM_COMMAND is now used in the building process.
3936 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
3937 the "build-* directories that it finds.
3939 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
3940 address in a domain literal was a prefix of an interface address.
3942 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
3943 when verifying a sender address, unless rewrite_headers is false.
3945 PH/44 Wrote a long comment about why errors_to addresses are verified as
3946 recipients, not senders.
3948 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
3949 the ratelimit ACL was added.
3951 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
3953 PH/46 Added extra information about PostgreSQL errors to the error string.
3955 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
3956 avoiding the need to install special zones in a real server. This is
3957 backwards compatible; if it can't find the fake resolver, it drops back.
3958 Thus, both old and new test suites can be run.
3960 TF/02 Added util/
3962 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
3963 clock is set back in time.
3965 TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
3966 Candler <>.
3968 TF/05 The fix for PH/43 was not completely correct; widen_domains is always
3969 OK for addresses that are the result of redirections.
3971 PH/48 A number of further additions for the benefit of the new test suite,
3972 including a fake gethostbyname() that interfaces to the fake DNS resolver
3973 (see PH/47 above).
3975 TF/06 The fix for widen_domains has also been applied to qualify_single and
3976 search_parents which are the other dnslookup options that can cause
3977 header rewrites.
3979 PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
3980 type ("H").
3982 PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
3984 TF/07 Exim produced the error message "an SRV record indicated no SMTP
3985 service" if it encountered an MX record with an empty target hostname.
3986 The message is now "an MX or SRV record indicated no SMTP service".
3988 TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
3989 if the DNS of the sending site is misconfigured. This is quite a
3990 common situation. This change restores the behaviour of treating a
3991 helo verification defer as a failure.
3993 PH/51 If self=fail was set on a router, the bounce message did not include the
3994 actual error message.
3997 Exim version 4.52
3998 -----------------
4000 TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
4002 PH/01 When a transport filter timed out in a pipe delivery, and the pipe
4003 command itself ended in error, the underlying message about the transport
4004 filter timeout was being overwritten with the pipe command error. Now the
4005 underlying error message should be appended to the second error message.
4007 TK/01 Fix poll() being unavailable on Mac OSX 10.2.
4009 PH/02 Reduce the amount of output that "make" produces by default. Full output
4010 can still be requested.
4012 PH/03 The warning log line about a condition test deferring for a "warn" verb
4013 was being output only once per connection, rather than after each
4014 occurrence (because it was using the same function as for successful
4015 "warn" verbs). This seems wrong, so I have changed it.
4017 TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
4018 it should not have, which might have caused a crash in the right
4019 circumstances, but probably never did.
4021 PH/04 Installed a modified version of Tony Finch's patch to make submission
4022 mode fix the return path as well as the Sender: header line, and to
4023 add a /name= option so that you can make the user's friendly name appear
4024 in the header line.
4026 TF/03 Added the control = fakedefer ACL modifier.
4028 TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
4029 Mark Lowes for thorough testing.
4031 TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
4033 TK/03 Merged latest SRS patch from Miles Wilton.
4035 PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
4036 with the definition in sysexits.h (which is #included earlier).
4037 Fortunately, Exim does not actually use EX_OK. The code used to try to
4038 preserve the sysexits.h value, by assuming that macro definitions were
4039 scanned for macro replacements. I have been disabused of this notion,
4040 so now the code just undefines EX_OK before #including unistd.h.
4042 PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
4043 in the smtp transport. When a block could not be written in a single
4044 write() function, the timeout was being re-applied to each part-write.
4045 This seems wrong - if the receiver was accepting one byte at a time it
4046 would take for ever. The timeout is now adjusted when this happens. It
4047 doesn't have to be particularly precise.
4049 TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
4050 details. Thanks to Chris Webb <> for the patch!
4052 PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
4053 without a domain if the check to <postmaster@domain> fails.
4055 SC/01 Eximstats: added -xls and the ability to specify output files
4056 (patch written by Frank Heydlauf).
4058 SC/02 Eximstats: use FileHandles for outputting results.
4060 SC/03 Eximstats: allow any combination of xls, txt, and html output.
4062 SC/04 Eximstats: fixed display of large numbers with -nvr option
4064 SC/05 Eximstats: fixed merging of reports with empty tables.
4066 SC/06 Eximstats: added the -include_original_destination flag
4068 SC/07 Eximstats: removed tabs and trailing whitespace.
4070 TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
4072 TK/06 MBOX spool code: Add real "From " MBOX separator line
4073 so the .eml file is really in mbox format (even though
4074 most programs do not really care). Patch from Alex Miller.
4076 TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
4077 The latter is generated from $received_to and is only set if the
4078 message has one envelope recipient. SA can use these headers,
4079 obviously out-of-the-box. Patch from Alex Miller.
4081 PH/08 The ${def test on a variable was returning false if the variable's
4082 value was "0", contrary to what the specification has always said!
4083 The result should be true unless the variable is empty.
4085 PH/09 The syntax error of a character other than { following "${if
4086 def:variable_name" (after optional whitespace) was not being diagnosed.
4087 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
4088 accidental colon was present, for example, could give incorrect results.
4090 PH/10 Tidied the code in a number of places where the st_size field of a stat()
4091 result is used (not including appendfile, where other changes are about
4092 to be made).
4094 PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
4095 This involved changing a lot of size variables from int to off_t. It
4096 should work with maildirs and everything.
4098 TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
4099 spamd dying while we are connected to it.
4101 TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
4102 <>
4104 PH/12 Applied Alex Kiernan's patch for the API change for the error callback
4105 function for BDB 4.3.
4107 PH/13 Changed auto_thaw such that it does not apply to bounce messages.
4109 PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
4110 the sources for PCRE have been re-arranged and more files are now
4111 involved.
4113 PH/15 The code I had for printing potentially long long variables in PH/11
4114 above was not the best (it lost precision). The length of off_t variables
4115 is now inspected at build time, and an appropriate printing format (%ld
4116 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
4117 to be "long long int" or "long int". This is needed for the internal
4118 formatting function string_vformat().
4120 PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
4121 the configuration file to be ":syslog", then the script "guesses" where
4122 the logs files are, rather than using the compiled in default. In our
4123 case the guess is not the same as the compiled default, so the script
4124 suddenly stopped working when I started to use syslog. The patch checks
4125 to see if log_file_path is "". If so, it attempts to read it from exim
4126 with no configuration file to get the compiled in version, before it
4127 falls back to the previous guessing code."
4129 TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
4130 implementing BATV in an Exim configuration. See NewStuff for the gory
4131 details.
4133 PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
4134 Makefile that are specific to HP-UX.
4136 PH/18 If the "use_postmaster" option was set for a recipient callout together
4137 with the "random" option, the postmaster address was used as the MAIL
4138 FROM address for the random test, but not for the subsequent recipient
4139 test. It is now used for both.
4141 PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
4142 patch removes a few documentation additions to RFC 3028, because the
4143 latest draft now contains them. It adds the new en;ascii-case comparator
4144 and a new error check for 8bit text in MIME parts. Comparator and
4145 require names are now matched exactly. I enabled the subaddress
4146 extension, but it is not well tested yet (read: it works for me)."
4148 PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
4149 rework some of the code of TK/09 above to avoid the hardwired use of
4150 "%lld" and "long long". Replaced the call to snprintf() with a call to
4151 string_vformat().
4153 PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
4154 records point to non-existent hosts", "retry timeout exceeded", and
4155 "retry time not reached for any host after a long failure period".
4157 PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
4158 experimental DomainKeys support:
4160 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
4161 (2) On an error such as an illegally used "control", the wrong name for
4162 the control was given.