1 Change log file for Exim from version 4.21
2 ------------------------------------------
3 This document describes *changes* to previous versions, that might
4 affect Exim's operation, with an unchanged configuration file. For new
5 options, and new features, see the NewStuff file next to this ChangeLog.
11 JH/01 Rework error string handling in TLS interface so that the caller in
12 more cases is responsible for logging. This permits library-sourced
13 string to be attached to addresses during delivery, and collapses
14 pairs of long lines into single ones.
16 PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
17 during configuration. Wildcards are allowed and expanded.
19 JH/02 Rework error string handling in DKIM to pass more info back to callers.
20 This permits better logging.
22 JH/03 Rework the transport continued-connection mechanism: when TLS is active,
23 do not close it down and have the child transport start it up again on
24 the passed-on TCP connection. Instead, proxy the child (and any
25 subsequent ones) for TLS via a unix-domain socket channel. Logging is
26 affected: the continued delivery log lines do not have any DNSSEC, TLS
27 Certificate or OCSP information. TLS cipher information is still logged.
29 JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
30 identical IP addresses on different listening ports. Will also affect
33 PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
34 add noisy ifdef guards to special-case this sillyness.
35 Patch from Bernd Kuhls.
37 JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
38 than 255 are no longer allowed.
40 JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
41 Disable the session-cache too, which might reduce our load. Since we
42 currrectly use a new context for every connection, both as server and
43 client, there is no benefit for these.
44 GnuTLS appears to not support tickets server-side by default (we don't
45 call gnutls_session_ticket_enable_server()) but client side is enabled
46 by default on recent versions (3.1.3 +) unless the PFS priority string
49 PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
50 <https://reproducible-builds.org/specs/source-date-epoch/>.
52 JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
53 the check for any unsuccessful recipients did not notice the limit, and
54 erroneously found still-pending ones.
56 JH/08 Pipeline CHUNKING command and data together, on kernels that support
57 MSG_MORE. Only in-clear (not on TLS connections).
59 JH/09 Avoid using a temporary file during transport using dkim. Unless a
60 transport-filter is involved we can buffer the headers in memory for
61 creating the signature, and read the spool data file once for the
62 signature and again for transmission.
64 JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
65 4.77 as the kernel support then wasn't solid, having issues in 64bit
66 mode. Now, it's been long enough. Add support for FreeBSD also.
68 JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
69 case where the routing stage had gathered several addresses to send to
70 a host before calling the transport for the first, we previously failed
71 to close down TLS in the old transport process before passing the TCP
72 connection to the new process. The new one sent a STARTTLS command
73 which naturally failed, giving a failed delivery and bloating the retry
74 database. Investigation and fix prototype from Wolfgang Breyha.
76 JH/12 Fix check on SMTP command input synchronisation. Previously there were
77 false-negatives in the check that the sender had not preempted a response
78 or prompt from Exim (running as a server), due to that code's lack of
79 awareness of the SMTP input buffering.
81 PP/04 Add commandline_checks_require_admin option.
82 Exim drops privileges sanely, various checks such as -be aren't a
83 security problem, as long as you trust local users with access to their
84 own account. When invoked by services which pass untrusted data to
85 Exim, this might be an issue. Set this option in main configuration
86 AND make fixes to the calling application, such as using `--` to stop
89 JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
90 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
91 responses to those, into a single TLS record each way (this usually means
92 a single packet). As a side issue, smtp_enforce_sync now works on TLS
95 PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
96 affects you only if you're dancing at the edge of the param size limits.
97 If you are, and this message makes sense to you, then: raise the
98 configured limit or use OpenSSL 1.1. Nothing we can do for older
101 JH/14 For the "sock" variant of the malware scanner interface, accept an empty
102 cmdline element to get the documented default one. Previously it was
105 JH/15 Fix a crash in the smtp transport caused when two hosts in succession
106 are unsuable for non-message-specific reasons - eg. connection timeout,
107 banner-time rejection.
109 JH/16 Fix logging of delivery remote port, when specified by router, under
112 PP/06 Repair manualroute's ability to take options in any order, even if one
113 is the name of a transport.
116 HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
118 JH/17 Change the list-building routines interface to use the expanding-string
119 triplet model, for better allocation and copying behaviour.
121 JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
122 Previously it was constructed the first time a possibly-matching string
123 was met in the configuration file input during startup; now it is done
126 JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
127 compatible one, to avoid the (poorly documented) possibility of a config
128 file in the working directory redirecting the DB files, possibly correpting
129 some existing file. CVE-2017-10140 assigned for BDB.
131 JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
132 cache-hot. Previously, although the result was properly cached, the
133 initial verify call returned a defer.
135 JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
136 the main verify for receipient in uncached-mode.
138 JH/22 Retire historical build files to an "unsupported" subdir. These are
139 defined as "ones for which we have no current evidence of testing".
141 JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
142 if present. Previously it was ignored.
144 JH/24 Start using specified-initialisers in C structure init coding. This is
145 a C99 feature (it's 2017, so now considered safe).
147 JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
148 if was a fixed-sized field and bitmask ops via macros; it is now more
151 PP/07 GitHub PR 56: Apply MariaDB build fix.
152 Patch provided by Jaroslav Škarvada.
154 PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
155 during Coverity cleanups [4.87 JH/47]
156 Diagnosis and fix provided by Michael Fischer v. Mollard.
158 JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
159 the right size to place the terminating semicolon on its own folded
160 line, the header hash was calculated to an incorrect value thanks to
161 the (relaxed) space the fold became.
163 HS/02 Fix Bug 2130: large writes from the transport subprocess where chunked
164 and confused the parent.
166 JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
167 which could crash as a result. This could lead to undeliverable messages.
169 JH/28 Logging: "next input sent too soon" now shows where input was truncated
172 JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
173 matters on fast-turnover and PID-randomising systems, which were getting
174 out-of-order delivery.
176 JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
177 a possibly-overlapping copy. The symptom was that "Remote host closed
178 connection in response to HELO" was logged instead of the actual 4xx
181 JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
182 Previously only that bufferd was discarded, resulting in SYMTP command
185 JH/32 DKIM: when a message has multiple signatures matching an identity given
186 in dkim_verify_signers, run the dkim acl once for each. Previously only
187 one run was done. Bug 2189.
193 JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
194 than -2003 did; needs libidn2 in addition to libidn.
196 JH/02 The path option on a pipe transport is now expanded before use.
198 PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
199 Patch provided by "Björn", documentation fix added too.
201 JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
202 missing a wire-to-host endian conversion.
204 JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
205 close after a BDAT command line could be taken as a following command,
206 giving a synch failure. Fix by only checking for synch immediately
207 before acknowledging the chunk.
209 PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
210 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
211 macro. Patches provided by Josh Soref.
213 JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
214 Previously we did not; the RFC seems ambiguous and VRFY is not listed
215 by IANA as a service extension. However, John Klensin suggests that we
218 JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
219 the dkim code may be unix-mode line endings rather than smtp wire-format
220 CRLF, so prepend a CR to any bare LF.
222 JH/07 Rationalise the coding for callout smtp conversations and transport ones.
223 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
225 JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
226 the first were themselves being wrongly included in the feed into dkim
227 processing; with most chunk sizes in use this resulted in an incorrect
228 body hash calculated value.
230 JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
231 DKIM signature block, for verification. Although advised against by
232 standards it is specifically not ruled illegal.
234 JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
236 JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
237 missing a body hash (the bh= tag).
239 JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
240 It seems that HAProxy sends the Proxy Protocol information in clear and
241 only then does a TLS startup, so do the same.
243 JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
244 TCP connections (such as for Spamd) unless the daemon successfully set
245 Fast Open mode on its listening sockets. This fixes breakage seen on
246 too-old kernels or those not configured for Fast Open, at the cost of
247 requiring both directions being enabled for TFO, and TFO never being used
248 by non-daemon-related Exim processes.
250 JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
251 endings, at least on the first header line. Try to canonify any that get
252 past that check, despite the cost.
254 JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
255 now limited to an arbitrary five deep, while parsing addresses with the
256 strip_excess_angle_brackets option enabled.
258 PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
259 instead leave the unprompted TLS handshake in socket buffer for the
260 TLS library to consume.
262 PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
264 PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
266 JH/16 Drop variables when they go out of scope. Memory management drops a whole
267 region in one operation, for speed, and this leaves assigned pointers
268 dangling. Add checks run only under the testsuite which checks all
269 variables at a store-reset and panics on a dangling pointer; add code
270 explicitly nulling out all the variables discovered. Fixes one known
271 bug: a transport crash, where a dangling pointer for $sending_ip_address
272 originally assigned in a verify callout, is re-used.
274 PP/06 Drop '.' from @INC in various Perl scripts.
276 PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
278 PP/08 Reduce a number of compilation warnings under clang; building with
279 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
280 should be warning-free.
282 JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
284 HS/01 Fix portability problems introduced by PP/08 for platforms where
285 realloc(NULL) is not equivalent to malloc() [SunOS et al].
287 HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
288 chunk. This allows us to accept broken chunked messages. We need a more
289 general solution here.
291 PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
292 already-broken messages in the queue.
294 JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
296 JH/19 Fix reference counting bug in routing-generated-address tracking.
302 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
303 supports it and a size is available (ie. the sending peer gave us one).
305 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
306 years of being deprecated). The replacements are the ACLs
307 acl_smtp_mime and acl_not_smtp_mime.
309 JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
310 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
311 or even an in-clear connection were permitted. Now, if the host lookup
312 was dnssec and dane was requested then the host is only used if the
313 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
314 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
315 if one fails this test.
316 This means that a poorly-configured remote DNS will make it incommunicado;
317 but it protects against a DNS-interception attack on it.
319 JH/04 Bug 1810: make continued-use of an open smtp transport connection
320 non-noisy when a race steals the message being considered.
322 JH/05 If main configuration option tls_certificate is unset, generate a
323 self-signed certificate for inbound TLS connections.
325 JH/06 Bug 165: hide more cases of password exposure - this time in expansions
326 in rewrites and routers.
328 JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
329 and logged a warning sing 4.83; now they are a configuration file error.
331 JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
332 (lacking @domain). Apply the same qualification processing as RCPT.
334 JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
336 JH/10 Support ${sha256:} applied to a string (as well as the previous
339 JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
340 a cutthrough deliver is pending, as we always want to make a connection.
341 This also avoids re-routing the message when later placing the cutthrough
342 connection after a verify cache hit.
343 Do not update it with the verify result either.
345 JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
346 when routing results in more than one destination address.
348 JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
349 signing (which inhibits the cutthrough capability). Previously only
350 the presence of an option was tested; now an expansion evaluating as
351 empty is permissible (obviously it should depend only on data available
352 when the cutthrough connection is made).
354 JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
355 the relevant preceding SMTP command did not note the pipelining mode.
357 JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
358 Previously they were not counted.
360 JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
361 as one having no matching records. Previously we deferred the message
362 that needed the lookup.
364 JH/17 Fakereject: previously logged as a normal message arrival "<="; now
365 distinguished as "(=".
367 JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
368 for missing MX records. Previously it only worked for missing A records.
370 JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
372 JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
373 after the data-go-ahead and data-ack. Patch from Jason Betts.
375 JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
376 even for a "none" policy. Patch from Tony Meyer.
378 JH/22 Fix continued use of a connection for further deliveries. If a port was
379 specified by a router, it must also match for the delivery to be
382 JH/23 Bug 1874: fix continued use of a connection for further deliveries.
383 When one of the recipients of a message was unsuitable for the connection
384 (has no matching addresses), we lost track of needing to mark it
385 deferred. As a result mail would be lost.
387 JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
389 JH/25 Decoding ACL controls is now done using a binary search; the source code
390 takes up less space and should be simpler to maintain. Merge the ACL
391 condition decode tables also, with similar effect.
393 JH/26 Fix problem with one_time used on a redirect router which returned the
394 parent address unchanged. A retry would see the parent address marked as
395 delivered, so not attempt the (identical) child. As a result mail would
398 JH/27 Fix a possible security hole, wherein a process operating with the Exim
399 UID can gain a root shell. Credit to http://www.halfdog.net/ for
400 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
403 JH/28 Enable {spool,log} filesystem space and inode checks as default.
404 Main config options check_{log,spool}_{inodes,space} are now
405 100 inodes, 10MB unless set otherwise in the configuration.
407 JH/29 Fix the connection_reject log selector to apply to the connect ACL.
408 Previously it only applied to the main-section connection policy
411 JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
413 PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
414 by me. Added RFC7919 DH primes as an alternative.
416 PP/02 Unbreak build via pkg-config with new hash support when crypto headers
417 are not in the system include path.
419 JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
420 GnuTLS, when a session startup failed (eg because the client disconnected)
421 Exim did stdio operations after fclose. This was exposed by a recent
422 change which nulled out the file handle after the fclose.
424 JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
425 signed directly by the cert-signing cert, rather than an intermediate
426 OCSP-signing cert. This is the model used by LetsEncrypt.
428 JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
430 HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
431 an incoming connection.
433 HS/02 Bug 1802: Do not half-close the connection after sending a request
436 HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
437 fallback to "prime256v1".
439 JH/34 SECURITY: Use proper copy of DATA command in error message.
440 Could leak key material. Remotely exploitable. CVE-2016-9963.
446 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
447 and 3.4.4 - once the server is enabled to respond to an OCSP request
448 it does even when not requested, resulting in a stapling non-aware
449 client dropping the TLS connection.
451 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
452 support variable-length bit vectors. No functional change.
454 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
455 The I= interface field on outgoing lines is now after the H= remote
456 host field, same as incoming lines. There is a separate
457 outgoing_interface log selector which allows you to disable the
460 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
461 If not running log_selector +smtp_connection the mainlog would be held
462 open indefinitely after a "too many connections" event, including to a
463 deleted file after a log rotate. Leave the per net connection logging
464 leaving it open for efficiency as that will be quickly detected by the
465 check on the next write.
467 HS/01 Bug 1671: Fix post transport crash.
468 Processing the wait-<transport> messages could crash the delivery
469 process if the message IDs didn't exist for some reason. When
470 using 'split_spool_directory=yes' the construction of the spool
471 file name failed already, exposing the same netto behaviour.
473 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
474 mime_regex ACL conditions.
476 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
477 to DSN fail messages (bounces): remote IP, remote greeting, remote response
478 to HELO, local diagnostic string.
480 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
481 log line to debug. Even when configured with a tls authenticator many
482 client connections are expected to not authenticate in this way, so
483 an authenticate fail is not an error.
485 HS/02 Add the Exim version string to the process info. This way exiwhat
486 gives some more detail about the running daemon.
488 JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
489 matter for fast-change records such as DNSBLs.
491 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
492 retry record, even if constant. There may be multiple transports with
493 different interface settings and the retry behaviour needs to be kept
496 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
498 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
500 JH/10 Bug 840: fix log_defer_output option of pipe transport
502 JH/11 Bug 830: use same host for all RCPTS of a message, even under
503 hosts_randomize. This matters a lot when combined with mua_wrapper.
505 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
506 ${quote_pgsql:<string>} operator.
508 JH/13 Bug 1708: avoid misaligned access in cached lookup.
510 JH/14 Change header file name for freeradius-client. Relevant if compiling
511 with Radius support; from the Gentoo tree and checked under Fedora.
513 JH/15 Bug 1712: Introduce $prdr_requested flag variable
515 JH/16 Bug 1714: Permit an empty string as expansion result for transport
516 option transport_filter, meaning no filtering.
518 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
520 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
521 defaults to "*" (all hosts). The variable is now available when not built
522 with TLS, default unset, mainly to enable keeping the testsuite sane.
523 If a server certificate is not supplied (via tls_certificate) an error is
524 logged, and clients will find TLS connections fail on startup. Presumably
525 they will retry in-clear.
526 Packagers of Exim are strongly encouraged to create a server certificate
527 at installation time.
529 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
530 with the $config_file variable.
532 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
533 in transport context, after the attempt, and per-recipient. The latter type
534 is per host attempted. The event data is the error message, and the errno
535 information encodes the lookup type (A vs. MX) used for the (first) host,
536 and the trailing two digits of the smtp 4xx response.
538 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
539 to write to mainlog (or rejectlog, paniclog) in the window between file
540 creation and permissions/ownership being changed. Particularly affects
541 installations where exicyclog is run as root, rather than exim user;
542 result is that the running daemon panics and dies.
544 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
546 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
547 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
548 "pri" and "weight". Note that the previous implicit priority given by the
549 list order is no longer honoured.
551 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
554 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
555 by defining SUPPORT_SOCKS.
557 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
558 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
559 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
560 variables are renamed to proxy_{local,external}_{address,port}.
562 JH/27 Move Internationalisation support from Experimental to mainline, enabled
563 for a build by defining SUPPORT_I18N
565 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
566 of the query string, and make ${quote_redis:} do that quoting.
568 JH/29 Move Events support from Experimental to mainline, enabled by default
569 and removable for a build by defining DISABLE_EVENT.
571 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
573 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
574 cached by the daemon.
576 JH/32 Move Redis support from Experimental to mainline, enabled for a build
577 by defining LOOKUP_REDIS. The libhiredis library is required.
579 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
580 keys are given for lookup.
582 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
583 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
584 only supported when built with TLS support. The PolarSSL SHA routines
585 are still used when the TLS library is too old for convenient support.
587 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
588 openssl_options), for security. OpenSSL forces this from version 1.1.0
589 server-side so match that on older versions.
591 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
592 allocation for $value could be released as the expansion processing
593 concluded, but leaving the global pointer active for it.
595 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
596 and to use the domains and local_parts ACL conditions.
598 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
599 incorrectly not doubled on cutthrough transmission, hence seen as a
600 body-termination at the receiving system - resulting in truncated mails.
601 Commonly the sender saw a TCP-level error, and retransmitted the message
602 via the normal store-and-forward channel. This could result in duplicates
603 received - but deduplicating mailstores were liable to retain only the
604 initial truncated version.
606 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
608 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
610 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
611 we're in there, support oversigning also; bug 1309.
613 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
615 HS/04 Add support for keep_environment and add_environment options.
617 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
618 either intentional arithmetic overflow during PRNG, or testing config-
621 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
622 delivery resulted in actual delivery. Cancel cutthrough before DATA
625 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
626 rejects a recipient: pass the reject to the originator.
628 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
629 Many were false-positives and ignorable, but it's worth fixing the
632 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
633 for the new environment-manipulation done at startup. Move the routines
634 from being local to tls.c to being global via the os.c file.
636 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
637 an extract embedded as result-arg for a map, the first arg for extract
638 is unavailable so we cannot tell if this is a numbered or keyed
639 extraction. Accept either.
645 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
648 JH/02 The smtp transport option "multi_domain" is now expanded.
650 JH/03 The smtp transport now requests PRDR by default, if the server offers
653 JH/04 Certificate name checking on server certificates, when exim is a client,
654 is now done by default. The transport option tls_verify_cert_hostnames
655 can be used to disable this per-host. The build option
656 EXPERIMENTAL_CERTNAMES is withdrawn.
658 JH/05 The value of the tls_verify_certificates smtp transport and main options
659 default to the word "system" to access the system default CA bundle.
660 For GnuTLS, only version 3.0.20 or later.
662 JH/06 Verification of the server certificate for a TLS connection is now tried
663 (but not required) by default. The verification status is now logged by
664 default, for both outbound TLS and client-certificate supplying inbound
667 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
670 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
671 Status Notification (bounce) messages are now MIME format per RFC 3464.
672 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
673 under the control of the dsn_advertise_hosts option, and routers may
674 have a dsn_lasthop option.
676 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
677 default, modifiable by a malware= option. The list separator for
678 the options can now be changed in the usual way. Bug 68.
680 JH/10 The smtp_receive_timeout main option is now expanded before use.
682 JH/11 The incoming_interface log option now also enables logging of the
683 local interface on delivery outgoing connections.
685 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
686 if the interface and destination host and port all match.
688 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
691 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
692 Patch from Andrew Lewis.
694 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
695 now supports optional time-restrictions, weighting, and priority
696 modifiers per server. Patch originally by <rommer@active.by>.
698 JH/16 The spamd_address main option now supports a mixed list of local
699 and remote servers. Remote servers can be IPv6 addresses, and
700 specify a port-range.
702 JH/17 Bug 68: The spamd_address main option now supports an optional
703 timeout value per server.
705 JH/18 Bug 1581: Router and transport options headers_add/remove can
706 now have the list separator specified.
708 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
711 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
714 JH/21 Support for the A6 type of dns record is withdrawn.
716 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
717 rather than the verbs used.
719 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
720 from 255 to 1024 chars.
722 JH/24 Verification callouts now attempt to use TLS by default.
724 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
725 are generic router options now. The defaults didn't change.
727 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
728 Original patch from Alexander Shikoff, worked over by JH.
730 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
731 files if ZCAT_COMMAND is not executable.
733 JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
735 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
737 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
738 Normally benign, it bites when the pair was led to by a CNAME;
739 modern usage is to not canonicalize the domain to a CNAME target
740 (and we were inconsistent anyway for A-only vs AAAA+A).
742 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
744 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
745 when evaluating $sender_host_dnssec.
747 JH/31 Check the HELO verification lookup for DNSSEC, adding new
748 $sender_helo_dnssec variable.
750 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
752 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
754 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
756 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
757 documented as working, but never had. Support all but $spam_report.
759 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
760 added for tls authenticator.
762 HS/03 Add perl_taintmode main config option
768 TL/01 When running the test suite, the README says that variables such as
769 no_msglog_check are global and can be placed anywhere in a specific
770 test's script, however it was observed that placement needed to be near
771 the beginning for it to behave that way. Changed the runtest perl
772 script to read through the entire script once to detect and set these
773 variables, reset to the beginning of the script, and then run through
774 the script parsing/test process like normal.
776 TL/02 The BSD's have an arc4random API. One of the functions to induce
777 adding randomness was arc4random_stir(), but it has been removed in
778 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
779 function when detected.
781 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
782 cause callback expansion.
784 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
785 syntax errors in an expansion can be treated as a string instead of
786 logging or causing an error, due to the internal use of bool_lax
787 instead of bool when processing it.
789 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
790 server certificates when making smtp deliveries.
792 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
794 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
796 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
798 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
799 Merged patch from Sebastian Wiedenroth.
801 JH/05 Fix results-pipe from transport process. Several recipients, combined
802 with certificate use, exposed issues where response data items split
803 over buffer boundaries were not parsed properly. This eventually
804 resulted in duplicates being sent. This issue only became common enough
805 to notice due to the introduction of connection certificate information,
806 the item size being so much larger. Found and fixed by Wolfgang Breyha.
808 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
809 size buffer was used, resulting in syntax errors when an expansion
812 JH/07 Add support for directories of certificates when compiled with a GnuTLS
813 version 3.3.6 or later.
815 JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
816 is EXPERIMENTAL_EVENT, the main-configuration and transport options
817 both become "event_action", the variables become $event_name, $event_data
818 and $event_defer_errno. There is a new variable $verify_mode, usable in
819 routers, transports and related events. The tls:cert event is now also
820 raised for inbound connections, if the main configuration event_action
823 TL/06 In test suite, disable OCSP for old versions of openssl which contained
824 early OCSP support, but no stapling (appears to be less than 1.0.0).
826 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
827 server certificate names available under the smtp transport option
828 "tls_verify_cert_hostname" now do not permit multi-component wildcard
831 JH/10 Time-related extraction expansions from certificates now use the main
832 option "timezone" setting for output formatting, and are consistent
833 between OpenSSL and GnuTLS compilations. Bug 1541.
835 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
836 encoded parameter in the incoming message. Bug 1558.
838 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
839 include certificate info, eximon was claiming there were spoolfile
842 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
844 JH/14 Log delivery-related information more consistently, using the sequence
845 "H=<name> [<ip>]" wherever possible.
847 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
848 are problematic for Debian distribution, omit them from the release
851 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
853 JH/16 Fix string representation of time values on 64bit time_t architectures.
856 JH/17 Fix a null-indirection in certextract expansions when a nondefault
857 output list separator was used.
862 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
863 checkers that were complaining about end of non-void function with no
866 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
867 This was a regression introduced in 4.83 by another bugfix.
869 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
871 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
872 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
878 TF/01 Correctly close the server side of TLS when forking for delivery.
880 When a message was received over SMTP with TLS, Exim failed to clear up
881 the incoming connection properly after forking off the child process to
882 deliver the message. In some situations the subsequent outgoing
883 delivery connection happened to have the same fd number as the incoming
884 connection previously had. Exim would try to use TLS and fail, logging
885 a "Bad file descriptor" error.
887 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
888 utilities have not been installed.
890 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
891 temporary space as the ACL may create new global variables.
893 TL/01 LDAP support uses per connection or global context settings, depending
894 upon the detected version of the libraries at build time.
896 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
897 to extract and use the src ip:port in logging and expansions as if it
898 were a direct connection from the outside internet. PPv2 support was
899 updated based on HAProxy spec change in May 2014.
901 JH/02 Add ${listextract {number}{list}{success}{fail}}.
903 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
904 Properly escape header and check for NULL return.
906 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
909 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
911 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
912 characters in header names, implemented as a verify condition.
913 Contributed by Michael Fischer v. Mollard.
915 TL/05 Rename SPF condition results err_perm and err_temp to standardized
916 results permerror and temperror. Previous values are deprecated but
917 still accepted. In a future release, err_perm and err_temp will be
918 completely removed, which will be a backward incompatibility if the
919 ACL tests for either of these two old results. Patch contributed by
920 user bes-internal on the mailing list.
922 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
924 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
925 selectors, in both main and reject logs.
927 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
930 JH/07 Add malware type "sock" for talking to simple daemon.
932 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
934 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
935 routers/transports under cutthrough routing.
937 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
938 numbers. Touch up "bool" conditional to keep the same definition.
940 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
942 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
944 JH/12 Expand items in router/transport headers_add or headers_remove lists
945 individually rather than the list as a whole. Bug 1452.
947 Required for reasonable handling of multiple headers_ options when
948 they may be empty; requires that headers_remove items with embedded
949 colons must have them doubled (or the list-separator changed).
951 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
952 view the policy declared in the DMARC record. Currently, $dmarc_status
953 is a combined value of both the record presence and the result of the
956 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
958 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
959 dnslookup router and the smtp transport (applying to the forward
962 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
963 of ldap servers used for a specific lookup. Patch provided by Heiko
966 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
967 New variable $lookup_dnssec_authenticated for observability.
969 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
970 Patch submitted by Lars Timman.
972 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
974 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
975 Requires trusted mode and valid format message id, aborts otherwise.
976 Patch contributed by Heiko Schlichting.
978 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
979 certextract with support for various fields. Bug 1358.
981 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
982 is requested by default, modifiable by smtp transport option
985 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
986 operate on certificate variables to give certificate fingerprints
987 Also new ${sha256:cert_variable}.
989 JH/23 The PRDR feature is moved from being Experimental into the mainline.
991 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
992 Christian Aistleitner.
994 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
996 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
997 file. Patch from Wolfgang Breyha.
999 JH/25 Expand the coverage of the delivery $host and $host_address to
1000 client authenticators run in verify callout. Bug 1476.
1002 JH/26 Port service names are now accepted for tls_on_connect_ports, to
1003 align with daemon_smtp_ports. Bug 72.
1005 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1006 support and error reporting did not work properly.
1008 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1009 and is readable. Patch from Andrew Colin Kissa.
1011 TL/14 Enhance documentation of ${run expansion and how it parses the
1012 commandline after expansion, particularly in the case when an
1013 unquoted variable expansion results in an empty value.
1015 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1017 PP/02 Fix internal collision of T_APL on systems which support RFC3123
1018 by renaming away from it. Addresses GH issue 15, reported by
1021 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1023 TL/15 SECURITY: prevent double expansion in math comparison functions
1024 (can expand unsanitized data). Not remotely exploitable.
1031 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1033 PP/02 Make -n do something, by making it not do something.
1034 When combined with -bP, the name of an option is not output.
1036 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1039 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1040 $sender_host_name and config options to manage this, and basic check
1043 PP/05 DSCP support for outbound connections and control modifier for inbound.
1045 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
1046 (Only plugin which currently uses this is kerberos4, which nobody should
1047 be using, but we should make it available and other future plugins might
1048 conceivably use it, even though it would break NAT; stuff *should* be
1049 using channel bindings instead).
1051 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
1052 name; added for Sendmail compatibility; requires admin caller.
1053 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1054 just ignore it); requires trusted caller.
1055 Also parse but ignore: -Ac -Am -X<logfile>
1058 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
1060 TL/02 Add +smtp_confirmation as a default logging option.
1062 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1063 Patch by Magnus Holmgren from 2007-02-20.
1065 TL/04 Bugzilla 1281 - Spec typo.
1066 Bugzilla 1283 - Spec typo.
1067 Bugzilla 1290 - Spec grammar fixes.
1069 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
1071 TL/06 Add Experimental DMARC support using libopendmarc libraries.
1073 TL/07 Fix an out of order global option causing a segfault. Reported to dev
1074 mailing list by by Dmitry Isaikin.
1076 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1078 JH/02 Support "G" suffix to numbers in ${if comparisons.
1080 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1082 NM/01 Bugzilla 1197 - Spec typo
1083 Bugzilla 1196 - Spec examples corrections
1085 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
1087 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1088 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1091 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1092 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1094 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1095 "acl {{name}{arg}...}", and optional args on acl condition
1098 JH/05 Permit multiple router/transport headers_add/remove lines.
1100 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1102 JH/07 Avoid using a waiting database for a single-message-only transport.
1103 Performance patch from Paul Fisher. Bugzilla 1262.
1105 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1108 JH/09 Add $headers_added variable, with content from use of ACL modifier
1109 add_header (but not yet added to the message). Bugzilla 199.
1111 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1112 Pulled from Bugzilla 817 by Wolfgang Breyha.
1114 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1116 (nb: this is the same fix as in Exim 4.80.1)
1118 JH/11 Add A= logging on delivery lines, and a client_set_id option on
1121 JH/12 Add optional authenticated_sender logging to A= and a log_selector
1124 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1126 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1127 advertise SMTP AUTH mechanism to us, instead of a generic
1128 protocol violation error. Also, make Exim more robust to bad
1129 data from the Dovecot auth socket.
1131 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1133 When a queue runner is handling a message, Exim first routes the
1134 recipient addresses, during which it prunes them based on the retry
1135 hints database. After that it attempts to deliver the message to
1136 any remaining recipients. It then updates the hints database using
1139 So if a recipient address works intermittently, it can get repeatedly
1140 deferred at routing time. The retry hints record remains fresh so the
1141 address never reaches the final cutoff time.
1143 This is a fairly common occurrence when a user is bumping up against
1144 their storage quota. Exim had some logic in its local delivery code
1145 to deal with this. However it did not apply to per-recipient defers
1146 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1148 This change adds a proper retry rule check during routing so that the
1149 final cutoff time is checked against the message's age. We only do
1150 this check if there is an address retry record and there is not a
1151 domain retry record; this implies that previous attempts to handle
1152 the address had the retry_use_local_parts option turned on. We use
1153 this as an approximation for the destination being like a local
1154 delivery, as in LMTP.
1156 I suspect this new check makes the old local delivery cutoff check
1157 redundant, but I have not verified this so I left the code in place.
1159 TF/02 Correct gecos expansion when From: is a prefix of the username.
1161 Test 0254 submits a message to Exim with the header
1165 When I ran the test suite under the user fanf2, Exim expanded
1166 the header to contain my full name, whereas it should have added
1167 a Resent-Sender: header. It erroneously treats any prefix of the
1168 username as equal to the username.
1170 This change corrects that bug.
1172 GF/01 DCC debug and logging tidyup
1173 Error conditions log to paniclog rather than rejectlog.
1174 Debug lines prefixed by "DCC: " to remove any ambiguity.
1176 TF/03 Avoid unnecessary rebuilds of lookup-related code.
1178 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1179 Bug spotted by Jeremy Harris; was flawed since initial commit.
1180 Would have resulted in OCSP responses post-SNI triggering an Exim
1181 NULL dereference and crash.
1183 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1185 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1186 Bug detection, analysis and fix by Samuel Thibault.
1187 Bugzilla 1331, Debian bug #698092.
1189 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1191 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1192 Server implementation by Todd Lyons, client by JH.
1193 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1194 config variable "prdr_enable" controls whether the server
1195 advertises the facility. If the client requests PRDR a new
1196 acl_data_smtp_prdr ACL is called once for each recipient, after
1197 the body content is received and before the acl_smtp_data ACL.
1198 The client is controlled by both of: a hosts_try_prdr option
1199 on the smtp transport, and the server advertisement.
1200 Default client logging of deliveries and rejections involving
1201 PRDR are flagged with the string "PRDR".
1203 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1204 fclose(). Diagnosis by Todd Lyons.
1206 PP/17 Update configure.default to handle IPv6 localhost better.
1207 Patch by Alain Williams (plus minor tweaks).
1210 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1211 This is now consistent with GnuTLS, and is now documented: the
1212 previous undocumented portable approach to treating the option as
1213 unset was to force an expansion failure. That still works, and
1214 an empty string is now equivalent.
1216 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1217 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1218 not performing validation itself.
1220 PP/20 Added force_command boolean option to pipe transport.
1221 Patch from Nick Koston, of cPanel Inc.
1223 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1226 TF/04 Added udpsend ACL modifier and hexquote expansion operator
1228 PP/21 Fix eximon continuous updating with timestamped log-files.
1229 Broken in a format-string cleanup in 4.80, missed when I repaired the
1230 other false fix of the same issue.
1231 Report and fix from Heiko Schlichting.
1234 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1235 Report from Prashanth Katuri.
1237 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1238 It's SecureTransport, so affects any MacOS clients which use the
1239 system-integrated TLS libraries, including email clients.
1241 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1242 using a MIME ACL for non-SMTP local injection.
1243 Report and assistance in diagnosis by Warren Baker.
1245 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1247 JH/16 Fix comparisons for 64b. Bugzilla 1385.
1249 TL/09 Add expansion variable $authenticated_fail_id to keep track of
1250 last id that failed so it may be referenced in subsequent ACL's.
1252 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1255 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1256 ldap library initialization, allowing self-signed CA's to be
1257 used. Also properly sets require_cert option later in code by
1258 using NULL (global ldap config) instead of ldap handle (per
1259 session). Bug diagnosis and testing by alxgomz.
1261 TL/12 Enhanced documentation in the ratelimit.pl script provided in
1262 the src/util/ subdirectory.
1264 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1265 renamed to Transport Post Delivery Action by Jeremy Harris, as
1268 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1269 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1270 redis_servers = needs to be configured which will be used by the redis
1271 lookup. Patch from Warren Baker, of The Packet Hub.
1273 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1275 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1276 hostname or reverse DNS when processing a host list. Used suggestions
1277 from multiple comments on this bug.
1279 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1281 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1282 Missed a few lines, added it to make the runtest require no keyboard
1285 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1286 contains upper case chars. Make router use caseful_local_part.
1288 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1289 support when GnuTLS has been built with p11-kit.
1295 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1297 This, or similar/improved, will also be change PP/11 of 4.82.
1303 PP/01 Handle short writes when writing local log-files.
1304 In practice, only affects FreeBSD (8 onwards).
1305 Bugzilla 1053, with thanks to Dmitry Isaikin.
1307 NM/01 Bugzilla 949 - Documentation tweak
1309 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1312 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1314 PP/02 Implemented gsasl authenticator.
1316 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1318 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1319 `pkg-config foo` for cflags/libs.
1321 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1322 with rest of GSASL and with heimdal_gssapi.
1324 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1325 `pkg-config foo` for cflags/libs for the TLS implementation.
1327 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
1328 properties get this fed in as external SSF. A number of robustness
1329 and debugging improvements to the cyrus_sasl authenticator.
1331 PP/08 cyrus_sasl server now expands the server_realm option.
1333 PP/09 Bugzilla 1214 - Log authentication information in reject log.
1334 Patch by Jeremy Harris.
1336 PP/10 Added dbmjz lookup type.
1338 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
1340 PP/12 MAIL args handles TAB as well as SP, for better interop with
1341 non-compliant senders.
1342 Analysis and variant patch by Todd Lyons.
1344 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
1345 Bug report from Lars Müller <lars@samba.org> (via SUSE),
1346 Patch from Dirk Mueller <dmueller@suse.com>
1348 PP/13 tls_peerdn now print-escaped for spool files.
1349 Observed some $tls_peerdn in wild which contained \n, which resulted
1350 in spool file corruption.
1352 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1353 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1354 or write after TLS renegotiation, which otherwise led to messages
1357 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1358 as a tracking header (ie: a signed header comes before the signature).
1359 Patch from Wolfgang Breyha.
1361 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1362 comma-sep list; embedded commas doubled.
1364 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1366 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1368 Report and patch from Dmitry Banschikov.
1370 PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
1371 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1372 failures. We appear to now support TLS1.1+ with Exim.
1374 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1375 lets Exim select keys and certificates based upon TLS SNI from client.
1376 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1377 before an outbound SMTP session. New log_selector, +tls_sni.
1379 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1380 NULL dereference. Report and patch from Alun Jones.
1382 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1383 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1384 Not seeing resolver debug output on NetBSD, but suspect this is a
1385 resolver implementation change.
1387 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1388 Left warnings. Added "eximon gdb" invocation mode.
1390 PP/21 Defaulting "accept_8bitmime" to true, not false.
1392 PP/22 Added -bw for inetd wait mode support.
1394 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1395 locate the relevant includes and libraries. Made this the default.
1397 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1398 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1400 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
1401 This may cause build issues on older platforms.
1403 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1404 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1405 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1406 Added SNI support via GnuTLS too.
1407 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
1409 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
1411 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
1412 Applied second patch from Janne, implementing suggestion to default
1413 multiple-strings-in-record handling to match SPF spec.
1415 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
1417 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1418 read-only, out of scope).
1419 Patch from Wolfgang Breyha, report from Stuart Northfield.
1421 PP/29 Fix three issues highlighted by clang analyser static analysis.
1422 Only crash-plausible issue would require the Cambridge-specific
1423 iplookup router and a misconfiguration.
1424 Report from Marcin Mirosław.
1426 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1428 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1429 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1430 As part of this, removing so much warning spew let me fix some minor
1431 real issues in debug logging.
1433 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1434 assignment on my part. Fixed.
1436 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1437 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1438 Janne Snabb (who went above and beyond: thank you).
1440 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1441 string otherwise requires a connection and a bunch more work and it's
1442 relatively easy to get wrong. Should also expose TLS library linkage
1445 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1446 64-bit ${eval} (JH/03).
1448 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
1449 GNU libc to support some of the 64-bit stuff, should not lead to
1450 conflicts. Defined before os.h is pulled in, so if a given platform
1451 needs to override this, it can.
1453 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1454 protection layer was required, which is not implemented.
1455 Bugzilla 1254, patch from Wolfgang Breyha.
1457 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1458 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1459 tls_dhparam take prime identifiers. Also unbreak combination of
1460 OpenSSL+DH_params+TLSSNI.
1462 PP/39 Disable SSLv2 by default in OpenSSL support.
1468 PP/01 Solaris build fix for Oracle's LDAP libraries.
1469 Bugzilla 1109, patch from Stephen Usher.
1471 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1473 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1476 TF/02 Fix a couple more cases where we did not log the error message
1477 when unlink() failed. See also change 4.74-TF/03.
1479 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1480 lock up or crash if it happened to be inside a call to libc when it
1481 got a SIGUSR1 from exiwhat.
1483 The SIGUSR1 handler appends the current process status to the process
1484 log which is later printed by exiwhat. It used to use the general
1485 purpose logging code to do this, but several functions it calls are
1486 not safe for signals.
1488 The new output code in the SIGUSR1 handler is specific to the process
1489 log, and simple enough that it's easy to inspect for signal safety.
1490 Removing some special cases also simplifies the general logging code.
1491 Removing the spurious timestamps from the process log simplifies
1494 TF/04 Improved ratelimit ACL condition.
1496 The /noupdate option has been deprecated in favour of /readonly which
1497 has clearer semantics. The /leaky, /strict, and /readonly update modes
1498 are mutually exclusive. The update mode is no longer included in the
1499 database key; it just determines when the database is updated. (This
1500 means that when you upgrade Exim will forget old rate measurements.)
1502 Exim now checks that the per_* options are used with an update mode that
1503 makes sense for the current ACL. For example, when Exim is processing a
1504 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1505 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1506 must specify per_mail/readonly. If you omit the update mode it defaults to
1507 /leaky where that makes sense (as before) or /readonly where required.
1509 The /noupdate option is now undocumented but still supported for
1510 backwards compatibility. It is equivalent to /readonly except that in
1511 ACLs where /readonly is required you may specify /leaky/noupdate or
1512 /strict/noupdate which are treated the same as /readonly.
1514 A useful new feature is the /count= option. This is a generalization
1515 of the per_byte option, so that you can measure the throughput of other
1516 aggregate values. For example, the per_byte option is now equivalent
1517 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1519 The per_rcpt option has been generalized using the /count= mechanism
1520 (though it's more complicated than the per_byte equivalence). When it is
1521 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1522 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1523 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1524 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1525 Note that using per_rcpt with a non-readonly update mode in more than
1526 one ACL will cause the recipients to be double-counted. (The per_mail
1527 and per_byte options don't have this problem.)
1529 The handling of very low rates has changed slightly. If the computed rate
1530 is less than the event's count (usually one) then this event is the first
1531 after a long gap. In this case the rate is set to the same as this event's
1532 count, so that the first message of a spam run is counted properly.
1534 The major new feature is a mechanism for counting the rate of unique
1535 events. The new per_addr option counts the number of different
1536 recipients that someone has sent messages to in the last time period. It
1537 behaves like per_rcpt if all the recipient addresses are different, but
1538 duplicate recipient addresses do not increase the measured rate. Like
1539 the /count= option this is a general mechanism, so the per_addr option
1540 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1541 example, measure the rate that a client uses different sender addresses
1542 with the options per_mail/unique=$sender_address. There are further
1543 details in the main documentation.
1545 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1547 TF/06 Removed a few PCRE remnants.
1549 TF/07 Automatically extract Exim's version number from tags in the git
1550 repository when doing development or release builds.
1552 PP/02 Raise smtp_cmd_buffer_size to 16kB.
1553 Bugzilla 879. Patch from Paul Fisher.
1555 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1556 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1559 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
1561 PP/05 Variable $av_failed, true if the AV scanner deferred.
1562 Bugzilla 1078. Patch from John Horne.
1564 PP/06 Stop make process more reliably on build failure.
1565 Bugzilla 1087. Patch from Heiko Schlittermann.
1567 PP/07 Make maildir_use_size_file an _expandable_ boolean.
1568 Bugzilla 1089. Patch from Heiko Schlittermann.
1570 PP/08 Handle ${run} returning more data than OS pipe buffer size.
1571 Bugzilla 1131. Patch from Holger Weiß.
1573 PP/09 Handle IPv6 addresses with SPF.
1574 Bugzilla 860. Patch from Wolfgang Breyha.
1576 PP/10 GnuTLS: support TLS 1.2 & 1.1.
1578 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1581 PP/11 match_* no longer expand right-hand-side by default.
1582 New compile-time build option, EXPAND_LISTMATCH_RHS.
1583 New expansion conditions, "inlist", "inlisti".
1585 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
1587 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
1589 PP/14 fix log_write() format string regression from TF/03.
1590 Bugzilla 1152. Patch from Dmitry Isaikin.
1596 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
1598 PP/02 Harmonised TLS library version reporting; only show if debugging.
1599 Layout now matches that introduced for other libraries in 4.74 PP/03.
1601 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
1603 PP/04 New "dns_use_edns0" global option.
1605 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
1608 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
1609 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
1611 TK/01 Updated PolarSSL code to 0.14.2.
1612 Bugzilla 1097. Patch from Andreas Metzler.
1614 PP/07 Catch divide-by-zero in ${eval:...}.
1615 Fixes bugzilla 1102.
1617 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
1620 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
1621 format-string attack -- SECURITY: remote arbitrary code execution.
1623 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
1624 time unintentionally subject to list matching rules, letting the header
1625 cause arbitrary Exim lookups (of items which can occur in lists, *not*
1626 arbitrary string expansion). This allowed for information disclosure.
1628 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
1629 INT_MIN/-1 -- value coerced to INT_MAX.
1635 NM/01 Workaround for PCRE version dependency in version reporting
1638 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
1639 This fixes portability to compilers other than gcc, notably
1640 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
1642 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
1643 makefiles for portability to HP-UX and POSIX correctness.
1645 PP/01 Permit LOOKUP_foo enabling on the make command-line.
1646 Also via indented variable definition in the Makefile.
1647 (Debugging by Oliver Heesakkers).
1649 PP/02 Restore caching of spamd results with expanded spamd_address.
1650 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
1652 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
1653 Improves build reliability. Fix from: Frank Elsner
1655 NM/02 Fix wide character breakage in the rfc2047 coding
1656 Fixes bug 1064. Patch from Andrey N. Oktyabrski
1658 NM/03 Allow underscore in dnslist lookups
1659 Fixes bug 1026. Patch from Graeme Fowler
1661 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
1662 Code patches from Adam Ciarcinski of NetBSD.
1664 NM/04 Fixed exiqgrep to cope with mailq missing size issue
1667 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
1668 is logged, to avoid truncation. Patch from John Horne.
1670 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
1671 Patch from Jakob Hirsch.
1673 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
1674 SQL string expansion failure details.
1675 Patch from Andrey Oktyabrski.
1677 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
1678 Patch from Simon Arlott.
1680 PP/09 New lookups functionality failed to compile on old gcc which rejects
1681 extern declarations in function scope.
1682 Patch from Oliver Fleischmann
1684 PP/10 Use sig_atomic_t for flags set from signal handlers.
1685 Check getgroups() return and improve debugging.
1686 Fixed developed for diagnosis in bug 927 (which turned out to be
1689 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
1690 Patch from Mark Zealey.
1692 PP/12 Bugzilla 1056: Improved spamd server selection.
1693 Patch from Mark Zealey.
1695 PP/13 Bugzilla 1086: Deal with maildir quota file races.
1696 Based on patch from Heiko Schlittermann.
1698 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
1699 Patch from Uwe Doering, sign-off by Michael Haardt.
1701 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
1702 variable declaration deep within a block. Bug and patch from
1705 PP/15 lookups-Makefile IRIX compatibility coercion.
1707 PP/16 Make DISABLE_DKIM build knob functional.
1709 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
1710 Patch by Simon Arlott
1712 TF/03 Fix valgrind.h portability to C89 compilers that do not support
1713 variable argument macros. Our copy now differs from upstream.
1719 TF/01 Failure to get a lock on a hints database can have serious
1720 consequences so log it to the panic log.
1722 TF/02 Log LMTP confirmation messages in the same way as SMTP,
1723 controlled using the smtp_confirmation log selector.
1725 TF/03 Include the error message when we fail to unlink a spool file.
1727 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
1728 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
1729 for maintaining out-of-tree patches for some time.
1731 PP/01 Bugzilla 139: Documentation and portability issues.
1732 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
1733 Handle per-OS dynamic-module compilation flags.
1735 PP/02 Let /dev/null have normal permissions.
1736 The 4.73 fixes were a little too stringent and complained about the
1737 permissions on /dev/null. Exempt it from some checks.
1738 Reported by Andreas M. Kirchwitz.
1740 PP/03 Report version information for many libraries, including
1741 Exim version information for dynamically loaded libraries. Created
1742 version.h, now support a version extension string for distributors
1743 who patch heavily. Dynamic module ABI change.
1745 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
1746 privilege escalation vulnerability whereby the Exim run-time user
1747 can cause root to append content of the attacker's choosing to
1750 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
1753 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
1754 If dropping privileges for untrusted macros, we disabled normal logging
1755 on the basis that it would fail; for the Exim run-time user, this is not
1756 the case, and it resulted in successful deliveries going unlogged.
1757 Fixed. Reported by Andreas Metzler.
1763 PP/01 Date: & Message-Id: revert to normally being appended to a message,
1764 only prepend for the Resent-* case. Fixes regression introduced in
1765 Exim 4.70 by NM/22 for Bugzilla 607.
1767 PP/02 Include check_rfc2047_length in configure.default because we're seeing
1768 increasing numbers of administrators be bitten by this.
1770 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
1772 PP/03 Bugzilla 994: added openssl_options main configuration option.
1774 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
1776 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
1778 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
1780 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
1781 without a peer certificate, leading to a segfault because of an
1782 assumption that peers always have certificates. Be a little more
1783 paranoid. Problem reported by Martin Tscholak.
1785 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
1786 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
1787 NB: ClamAV planning to remove STREAM in "middle of 2010".
1788 CL also introduces -bmalware, various -d+acl logging additions and
1789 more caution in buffer sizes.
1791 PP/09 Implemented reverse_ip expansion operator.
1793 PP/10 Bugzilla 937: provide a "debug" ACL control.
1795 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
1797 PP/12 Bugzilla 973: Implement --version.
1799 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
1801 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
1803 PP/15 Bugzilla 816: support multiple condition rules on Routers.
1805 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
1806 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
1807 ignore trailing whitespace.
1809 JJ/02 prevent non-panic DKIM error from being sent to paniclog
1811 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
1814 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
1815 Notification from Dr Andrew Aitchison.
1817 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
1818 ExtendedDetectionInfo response format.
1819 Notification from John Horne.
1821 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
1824 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
1825 XSL and documented dependency on system catalogs, with examples of how
1828 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
1831 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
1832 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
1833 configuration file which is writeable by the Exim user or group.
1835 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
1836 of configuration files to cover files specified with the -C option if
1837 they are going to be used with root privileges, not just the default
1840 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
1841 option (effectively making it always true).
1843 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
1844 files to be used while preserving root privileges.
1846 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
1847 that rogue child processes cannot use them.
1849 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
1850 run-time user, instead of root.
1852 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
1853 Exim run-time user without dropping privileges.
1855 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
1856 result string, instead of calling string_vformat() twice with the same
1859 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
1860 for other users. Others should always drop root privileges if they use
1861 -C on the command line, even for a whitelisted configure file.
1863 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
1865 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
1871 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
1872 $data_path, and $header_path variables; fixed documentation bugs and
1875 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
1876 exipick to access non-standard spools, including the "frozen" queue
1879 NM/01 Bugzilla 965: Support mysql stored procedures.
1880 Patch from Alain Williams
1882 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
1884 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
1885 Patch from Andreas Metzler
1887 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
1888 Patch from Kirill Miazine
1890 NM/05 Bugzilla 671: Added umask to procmail example.
1892 JJ/03 installed exipick 20100323.0, fixing doc bug
1894 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
1895 directory. Notification and patch from Dan Rosenberg.
1897 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
1899 TK/02 Improve log output when DKIM signing operation fails.
1901 MH/01 Treat the transport option dkim_domain as a colon separated
1902 list, not as a single string, and sign the message with each element,
1903 omitting multiple occurences of the same signer.
1905 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
1906 Bugzilla 985, 986. Patch by Simon Arlott
1908 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
1909 Patch by Simon Arlott
1911 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
1912 MBX locking. Notification from Dan Rosenberg.
1918 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
1920 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
1922 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
1924 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
1926 NM/04 Bugzilla 915: Flag broken perl installation during build.
1932 TK/01 Added patch by Johannes Berg that expands the main option
1933 "spamd_address" if it starts with a dollar sign.
1935 TK/02 Write list of recipients to X-Envelope-Sender header when building
1936 the mbox-format spool file for content scanning (suggested by Jakob
1939 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
1940 (http://www.dcc-servers.net/) support via dccifd. Activated by
1941 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
1943 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
1944 by Mark Daniel Reidel <mr@df.eu>.
1946 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
1947 When building exim an external PCRE library is now needed -
1948 PCRE is a system library on the majority of modern systems.
1949 See entry on PCRE_LIBS in EDITME file.
1951 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
1952 conversation. Added nologin parameter to request.
1953 Patch contributed by Kirill Miazine.
1955 TF/01 Do not log submission mode rewrites if they do not change the address.
1957 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
1959 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
1960 log files in place. Contributed by Roberto Lima.
1962 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
1964 TF/03 Bugzilla 615: When checking the local_parts router precondition
1965 after a local_part_suffix or local_part_prefix option, Exim now
1966 does not use the address's named list lookup cache, since this
1967 contains cached lookups for the whole local part.
1969 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
1970 Robert Millan. Documentation is in experimental-spec.txt.
1972 TF/04 Bugzilla 668: Fix parallel build (make -j).
1974 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
1976 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
1977 Patch provided by Jan Srzednicki.
1979 TF/05 Leading white space used to be stripped from $spam_report which
1980 wrecked the formatting. Now it is preserved.
1982 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
1983 that they are available at delivery time.
1985 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
1987 TF/08 TLS error reporting now respects the incoming_interface and
1988 incoming_port log selectors.
1990 TF/09 Produce a more useful error message if an SMTP transport's hosts
1991 setting expands to an empty string.
1993 NM/06 Bugzilla 744: EXPN did not work under TLS.
1994 Patch provided by Phil Pennock.
1996 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
1997 Patch provided by Richard Godbee.
1999 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
2000 acl_smtp_notquit, added index entry.
2002 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2003 Patch provided by Eugene Bujak.
2005 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2006 accept(). Patch provided by Maxim Dounin.
2008 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
2009 Patch provided by Phil Pennock.
2011 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2013 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
2014 Patch provided by Brad "anomie" Jorsch.
2016 NM/14 Bugzilla 622: Added timeout setting to transport filter.
2017 Patch provided by Dean Brooks.
2019 TK/05 Add native DKIM support (does not depend on external libraries).
2021 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
2022 Patch provided by Graeme Fowler.
2024 NM/16 Bugzilla 851: Documentation example syntax fix.
2026 NM/17 Changed NOTICE file to remove references to embedded PCRE.
2028 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2031 NM/19 Bugzilla 745: TLS version reporting.
2032 Patch provided by Phil Pennock.
2034 NM/20 Bugzilla 167: bool: condition support.
2035 Patch provided by Phil Pennock.
2037 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2038 clients. Patch provided by Phil Pennock.
2040 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2041 Patch provided by Brad "anomie" Jorsch.
2043 NM/23 Bugzilla 687: Fix misparses in eximstats.
2044 Patch provided by Heiko Schlittermann.
2046 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2047 Patch provided by Heiko Schlittermann.
2049 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
2050 plus update to original patch.
2052 NM/26 Bugzilla 799: Documentation correction for ratelimit.
2054 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2055 Patch provided by David Brownlee.
2057 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
2059 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
2061 NM/30 Bugzilla 888: TLS documentation bugfixes.
2063 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
2065 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
2066 Unlike the original bugzilla I have changed all shell scripts in src tree.
2068 NM/33 Bugzilla 898: Transport filter timeout fix.
2069 Patch by Todd Rinaldo.
2071 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
2072 Patch by Serge Demonchaux.
2074 NM/35 Bugzilla 39: Base64 decode bug fixes.
2075 Patch by Jakob Hirsch.
2077 NM/36 Bugzilla 909: Correct connect() call in dcc code.
2079 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
2081 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
2083 NM/39 Bugzilla 911: Fixed MakeLinks build script.
2089 TK/01 Add preliminary DKIM support. Currently requires a forked version of
2090 ALT-N's libdkim that I have put here:
2091 http://duncanthrax.net/exim-experimental/
2093 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2094 were called 'true' and it seems that C99 defines that as a reserved
2095 keyword to be used with 'bool' variable types. That means you could
2096 not include C99-style headers which use bools without triggering
2097 build errors in sieve.c.
2099 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2100 as mailq or other aliases. Changed the --help handling significantly
2101 to do whats expected. exim_usage() emits usage/help information.
2103 SC/01 Added the -bylocaldomain option to eximstats.
2105 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
2107 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
2109 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
2115 PH/01 Another patch from the Sieve maintainer.
2117 PH/02 When an IPv6 address is converted to a string for single-key lookup
2118 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2119 dots are used instead of colons so that keys in lsearch files need not
2120 contain colons. This was done some time before quoting was made available
2121 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2122 (notated using the quote facility) so as to distinguish them from IPv4
2123 keys. This meant that lookups for IP addresses in host lists did not work
2124 for iplsearch lookups.
2126 This has been fixed by arranging for IPv6 addresses to be expressed with
2127 colons if the lookup type is iplsearch. This is not incompatible, because
2128 previously such lookups could never work.
2130 The situation is now rather anomalous, since one *can* have colons in
2131 ordinary lsearch keys. However, making the change in all cases is
2132 incompatible and would probably break a number of configurations.
2134 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2137 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2138 conversion specification without a maximum field width, thereby enabling
2139 a rogue spamd server to cause a buffer overflow. While nobody in their
2140 right mind would setup Exim to query an untrusted spamd server, an
2141 attacker that gains access to a server running spamd could potentially
2142 exploit this vulnerability to run arbitrary code as the Exim user.
2144 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2145 $primary_hostname instead of what libspf2 thinks the hosts name is.
2147 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2148 a directory entry by the name of the lookup key. Previously, if a
2149 symlink pointed to a non-existing file or a file in a directory that
2150 Exim lacked permissions to read, a lookup for a key matching that
2151 symlink would fail. Now it is enough that a matching directory entry
2152 exists, symlink or not. (Bugzilla 503.)
2154 PH/03 The body_linecount and body_zerocount variables are now exported in the
2157 PH/04 Added the $dnslist_matched variable.
2159 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2160 This means they are set thereafter only if the connection becomes
2163 PH/06 Added the client_condition to authenticators so that some can be skipped
2164 by clients under certain conditions.
2166 PH/07 The error message for a badly-placed control=no_multiline_responses left
2167 "_responses" off the end of the name.
2169 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2171 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2172 (without spaces) instead of just copying the configuration text.
2174 PH/10 Added the /noupdate option to the ratelimit ACL condition.
2176 PH/11 Added $max_received_linelength.
2178 PH/12 Added +ignore_defer and +include_defer to host lists.
2180 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2181 way in which PCRE > 7.0 is built.
2183 PH/14 Implemented queue_only_load_latch.
2185 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2186 MAIL command. The effect was to mangle the value on 64-bit systems.
2188 PH/16 Another patch from the Sieve maintainer.
2190 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2192 PH/18 If a system quota error occurred while trying to create the file for
2193 a maildir delivery, the message "Mailbox is full" was not appended to the
2194 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2195 only to a quota excession during the actual writing of the file.
2197 PH/19 It seems that peer DN values may contain newlines (and other non-printing
2198 characters?) which causes problems in log lines. The DN values are now
2199 passed through string_printing() before being added to log lines.
2201 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
2202 and InterBase are left for another time.)
2204 PH/21 Added message_body_newlines option.
2206 PH/22 Guard against possible overflow in moan_check_errorcopy().
2208 PH/23 POSIX allows open() to be a macro; guard against that.
2210 PH/24 If the recipient of an error message contained an @ in the local part
2211 (suitably quoted, of course), incorrect values were put in $domain and
2212 $local_part during the evaluation of errors_copy.
2218 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2219 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2222 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2223 issue a MAIL command.
2225 PH/02 In an ACL statement such as
2227 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2229 if a client was not listed at all, or was listed with a value other than
2230 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2231 the condition was not true (as it should be), so access was not denied.
2232 The bug was that the ! inversion was incorrectly passed on to the second
2233 item. This has been fixed.
2235 PH/03 Added additional dnslists conditions == and =& which are different from
2236 = and & when the dns lookup returns more than one IP address.
2238 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2239 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2241 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2242 FSYNC, which compiles an option called disable_fsync that allows for
2243 bypassing fsync(). The documentation is heavily laced with warnings.
2245 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2247 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2248 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2249 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2250 including adding "make clean"; (3) Added -fPIC when compiling the test
2251 dynamically loaded module, to get rid of a warning.
2253 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2254 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2255 = 0s. The bug is otherwise harmless.
2257 PH/07 There was a bug in the dovecot authenticator such that the value of
2258 $auth1 could be overwritten, and so not correctly preserved, after a
2259 successful authentication. This usually meant that the value preserved by
2260 the server_setid option was incorrect.
2262 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2264 PH/09 Installed PCRE release 7.0.
2266 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2267 run for batched SMTP input. It is now run at the start of every message
2268 in the batch. While fixing this I discovered that the process information
2269 (output by running exiwhat) was not always getting set for -bs and -bS
2270 input. This is fixed, and it now also says "batched" for BSMTP.
2272 PH/11 Added control=no_pipelining.
2274 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2275 patch, slightly modified), and move the expansion of helo_data till after
2276 the connection is made in the smtp transport (so it can use these
2279 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2281 PH/14 Added log_selector = +pid.
2283 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2285 PH/16 Add ${if forany and ${if forall.
2287 PH/17 Added dsn_from option to vary the From: line in DSNs.
2289 PH/18 Flush SMTP output before performing a callout, unless control =
2290 no_callout_flush is set.
2292 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2293 was true (the default) a successful delivery failed to delete the retry
2294 item, thus causing premature timeout of the address. The bug is now
2297 PH/20 Added hosts_avoid_pipelining to the smtp transport.
2299 PH/21 Long custom messages for fakedefer and fakereject are now split up
2300 into multiline responses in the same way that messages for "deny" and
2301 other ACL rejections are.
2303 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2304 with slight modification.
2306 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2307 draft, changing the syntax and factoring some duplicate code".
2309 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2310 for deliveries of the second and subsequent messages over the same SMTP
2313 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2314 ${reduce, with only minor "tidies".
2316 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2318 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2319 expansion side effects.
2321 PH/27 When a message times out after an over-quota error from an Exim-imposed
2322 quota, the bounce message says "mailbox is full". This message was not
2323 being given when it was a system quota that was exceeded. It now should
2326 MH/03 Made $recipients available in local_scan(). local_scan() already has
2327 better access to the recipient list through recipients_list[], but
2328 $recipients can be useful in postmaster-provided expansion strings.
2330 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2331 in the case of a MAIL command with additional options following the
2332 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2333 were accidentally chopped off.
2335 PH/29 SMTP synchronization checks are implemented when a command is read -
2336 there is a check that no more input is waiting when there shouldn't be
2337 any. However, for some commands, a delay in an ACL can mean that it is
2338 some time before the response is written. In this time, more input might
2339 arrive, invalidly. So now there are extra checks after an ACL has run for
2340 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2341 pipelining has not been advertised.
2343 PH/30 MH's patch to allow iscntrl() characters to be list separators.
2345 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2346 returned in the SMTP response when smtp_return_error_details was false.
2347 This has been fixed.
2349 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2350 instead of the C I/O that was originally supplied, because problems were
2351 reported on Solaris.
2353 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2354 Exim which did not show up earlier: it was assuming that a call to
2355 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2356 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2357 was a macro that became an assignment, so it seemed to work. This has
2358 changed to a proper function call with a void return, hence the compile
2359 error. Exim's code has been fixed.
2361 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2364 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2366 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2368 PH/37 If a message is not accepted after it has had an id assigned (e.g.
2369 because it turns out to be too big or there is a timeout) there is no
2370 "Completed" line in the log. When some messages of this type were
2371 selected by exigrep, they were listed as "not completed". Others were
2372 picked up by some special patterns. I have improved the selection
2373 criteria to be more general.
2375 PH/38 The host_find_failed option in the manualroute router can now be set
2376 to "ignore", to completely ignore a host whose IP address cannot be
2377 found. If all hosts are ignored, the behaviour is controlled by the new
2378 host_all_ignored option.
2380 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2381 homing or because of multiple MX records with /mx) generated more than
2382 one IP address, and the following item turned out to be the local host,
2383 all the secondary addresses of the first item were incorrectly removed
2384 from the list, along with the local host and any following hosts (which
2385 is what is supposed to happen).
2387 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2388 whoever called Exim into the -H file. In the case of the daemon it was
2389 behaving confusingly. When first started, it used values for whoever
2390 started the daemon, but after a SIGHUP it used the Exim user (because it
2391 calls itself on a restart). I have changed the code so that it now always
2394 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2395 message are rejected with the same error (e.g. no authentication or bad
2396 sender address), and a DATA command is nevertheless sent (as can happen
2397 with PIPELINING or a stupid MUA), the error message that was given to the
2398 RCPT commands is included in the rejection of the DATA command. This is
2399 intended to be helpful for MUAs that show only the final error to their
2402 PH/42 Another patch from the Sieve maintainer.
2404 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2405 Eximstats - Fixed some broken HTML links and added missing column headers
2407 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2408 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2410 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2412 PH/43 Yet another patch from the Sieve maintainer.
2414 PH/44 I found a way to check for a TCP/IP connection going away before sending
2415 the response to the final '.' that terminates a message, but only in the
2416 case where the client has not sent further data following the '.'
2417 (unfortunately, this is allowed). However, in many cases there won't be
2418 any further data because there won't be any more messages to send. A call
2419 to select() can be used: if it shows that the input is "ready", there is
2420 either input waiting, or the socket has been closed. An attempt to read
2421 the next input character can distinguish the two cases. Previously, Exim
2422 would have sent an OK response which the client would never have see.
2423 This could lead to message repetition. This fix should cure that, at
2424 least in a lot of common cases.
2426 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2427 advertised in response to EHLO.
2433 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2434 fixed by 4.65/MH/01 (is this a record?) are fixed:
2436 (i) An empty string was always treated as zero by the numeric comparison
2437 operators. This behaviour has been restored.
2439 (ii) It is documented that the numeric comparison operators always treat
2440 their arguments as decimal numbers. This was broken in that numbers
2441 starting with 0 were being interpreted as octal.
2443 While fixing these problems I realized that there was another issue that
2444 hadn't been noticed. Values of message_size_limit (both the global option
2445 and the transport option) were treated as octal if they started with 0.
2446 The documentation was vague. These values are now always treated as
2447 decimal, and I will make that clear in the documentation.
2453 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2454 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2457 MH/01 Don't check that the operands of numeric comparison operators are
2458 integers when their expansion is in "skipping" mode (fixes bug
2459 introduced by 4.64-PH/07).
2461 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2462 child addresses, Exim now panics and dies. Previously, because the count
2463 is held in a short int, deliveries were likely to be lost. As such a
2464 large number of recipients for a single message is ridiculous
2465 (performance will be very, very poor), I have chosen to impose a limit
2466 rather than extend the field.
2472 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2473 leftover -K file (the existence of which was triggered by #402).
2474 While we were at it, introduced process PID as part of the -K
2475 filename. This should rule out race conditions when creating
2478 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2479 processing considerably. Previous code took too long for large mails,
2480 triggering a timeout which in turn triggers #401.
2482 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2483 in the DK code in transports.c. sendfile() is not really portable,
2484 hence the _LINUX specificness.
2486 TF/01 In the add_headers option to the mail command in an Exim filter,
2487 there was a bug that Exim would claim a syntax error in any
2488 header after the first one which had an odd number of characters
2491 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2492 callout verification, Exim cached a "reject" for the entire domain. This
2493 is correct for most verifications, but it is not correct for a recipient
2494 verification with use_sender or use_postmaster set, because in that case
2495 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2496 case of MAIL FROM:<> rejection from other early rejections (e.g.
2497 rejection of HELO). When verifying a recipient using a non-null MAIL
2498 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2499 Whatever the result of the callout, the value of the domain cache is
2500 left unchanged (for any other kind of callout, getting as far as trying
2501 RCPT means that the domain itself is ok).
2503 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2506 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2507 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2508 session, the daemon ignores ECONNECT errors and logs others; it now
2509 ignores EPIPE as well.
2511 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2512 (quoted-printable decoding).
2514 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
2515 later the small subsequent patch to fix an introduced bug.
2517 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2519 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2521 PH/08 An error is now given if message_size_limit is specified negative.
2523 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
2524 to be given (somewhat) arbitrary names.
2526 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2529 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2530 miscellaneous code fixes
2532 PH/10 Added the log_reject_target ACL modifier to specify where to log
2535 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2536 hostname. This is wrong, because it relates to the incoming message (and
2537 probably the interface on which it is arriving) and not to the outgoing
2538 callout (which could be using a different interface). This has been
2539 changed to use the value of the helo_data option from the smtp transport
2540 instead - this is what is used when a message is actually being sent. If
2541 there is no remote transport (possible with a router that sets up host
2542 addresses), $smtp_active_hostname is used.
2544 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
2545 tweaks were necessary in order to get it to work (see also 21 below):
2546 (a) The code assumed that strncpy() returns a negative number on buffer
2547 overflow, which isn't the case. Replaced with Exim's string_format()
2549 (b) There were several signed/unsigned issues. I just did the minimum
2550 hacking in of casts. There is scope for a larger refactoring.
2551 (c) The code used strcasecmp() which is not a standard C function.
2552 Replaced with Exim's strcmpic() function.
2553 (d) The code set only $1; it now sets $auth1 as well.
2554 (e) A simple test gave the error "authentication client didn't specify
2555 service in request". It would seem that Dovecot has changed its
2556 interface. Fortunately there's a specification; I followed it and
2557 changed what the client sends and it appears to be working now.
2559 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
2562 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
2563 address A is aliased to B and C, where B exists and C does not. Without
2564 -v the output is "A verified" because verification stops after a
2565 successful redirection if more than one address is generated. However,
2566 with -v the child addresses are also verified. Exim was outputting "A
2567 failed to verify" and then showing the successful verification for C,
2568 with its parentage. It now outputs "B failed to verify", showing B's
2569 parentage before showing the successful verification of C.
2571 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
2572 look up a TXT record in a specific list after matching in a combined
2575 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2576 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2577 they consult the DNS. I had assumed they would set it the way they
2578 wanted; and indeed my experiments on Linux seem to show that in some
2579 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2580 To be on the safe side, however, I have now made the interface to
2581 host_find_byname() similar to host_find_bydns(), with an argument
2582 containing the DNS resolver options. The host_find_byname() function now
2583 sets these options at its start, just as host_find_bydns() does. The smtp
2584 transport options dns_qualify_single and dns_search_parents are passed to
2585 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
2586 of host_find_byname() use the default settings of RES_DEFNAMES
2587 (qualify_single) but not RES_DNSRCH (search_parents).
2589 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
2590 spool_read_header() do less string testing, by means of a preliminary
2591 switch on the second character of optional "-foo" lines. (This is
2592 overdue, caused by the large number of possibilities that now exist.
2593 Originally there were few.) While I was there, I also converted the
2594 str(n)cmp tests so they don't re-test the leading "-" and the first
2595 character, in the hope this might squeeze out yet more improvement.
2597 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
2598 flag allowing group syntax was set by the header_syntax check but not
2599 turned off, possible causing trouble later; (2) The flag was not being
2600 set at all for the header_verify test, causing "group"-style headers to
2601 be rejected. I have now set it in this case, and also caused header_
2602 verify to ignore an empty address taken from a group. While doing this, I
2603 came across some other cases where the code for allowing group syntax
2604 while scanning a header line wasn't quite right (mostly, not resetting
2605 the flag correctly in the right place). These bugs could have caused
2606 trouble for malformed header lines. I hope it is now all correct.
2608 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
2609 with the "reply" argument non-NULL. The code, however (which originally
2610 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
2611 but it didn't always do it. This confused somebody who was copying the
2612 code for some other use. I have removed all the tests.
2614 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
2615 feature that was used to support insecure browsers during the U.S. crypto
2616 embargo. It requires special client support, and Exim is probably the
2617 only MTA that supported it -- and would never use it because real RSA is
2618 always available. This code has been removed, because it had the bad
2619 effect of slowing Exim down by computing (never used) parameters for the
2620 RSA_EXPORT functionality.
2622 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
2623 authenticator to fail if there's a tab character in the incoming data
2624 (there should never be unless someone is messing about, as it's supposed
2625 to be base64-encoded). Also added, on Timo's advice, the "secured" option
2626 if the connection is using TLS or if the remote IP is the same as the
2627 local IP, and the "valid-client-cert option" if a client certificate has
2630 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
2631 authenticators. This can be used for authorization after authentication
2632 succeeds. (In the case of plaintext, it servers for both authentication
2635 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
2636 if any retry times were supplied.
2638 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
2639 connection, where there is no client IP address to check. In this
2640 situation, the verify now always succeeds.
2642 PH/25 Applied John Jetmore's -Mset patch.
2644 PH/26 Added -bem to be like -Mset, but loading a message from a file.
2646 PH/27 In a string expansion for a processed (not raw) header when multiple
2647 headers of the same name were present, leading whitespace was being
2648 removed from all of them, but trailing whitespace was being removed only
2649 from the last one. Now trailing whitespace is removed from each header
2650 before concatenation. Completely empty headers in a concatenation (as
2651 before) are ignored.
2653 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
2654 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
2656 PH/29 [Removed. This was a change that I later backed out, and forgot to
2657 correct the ChangeLog entry (that I had efficiently created) before
2658 committing the later change.]
2660 PH/30 Exim was sometimes attempting to deliver messages that had suffered
2661 address errors (4xx response to RCPT) over the same connection as other
2662 messages routed to the same hosts. Such deliveries are always "forced",
2663 so retry times are not inspected. This resulted in far too many retries
2664 for the affected addresses. The effect occurred only when there were more
2665 hosts than the hosts_max_try setting in the smtp transport when it had
2666 the 4xx errors. Those hosts that it had tried were not added to the list
2667 of hosts for which the message was waiting, so if all were tried, there
2668 was no problem. Two fixes have been applied:
2670 (i) If there are any address or message errors in an SMTP delivery, none
2671 of the hosts (tried or untried) are now added to the list of hosts
2672 for which the message is waiting, so the message should not be a
2673 candidate for sending over the same connection that was used for a
2674 successful delivery of some other message. This seems entirely
2675 reasonable: after all the message is NOT "waiting for some host".
2676 This is so "obvious" that I'm not sure why it wasn't done
2677 previously. Hope I haven't missed anything, but it can't do any
2678 harm, as the worst effect is to miss an optimization.
2680 (ii) If, despite (i), such a delivery is accidentally attempted, the
2681 routing retry time is respected, so at least it doesn't keep
2682 hammering the server.
2684 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
2685 in ${readsocket because some servers need this prod.
2687 PH/32 Added some extra debug output when updating a wait-xxx database.
2689 PH/33 The hint "could be header name not terminated by colon", which has been
2690 given for certain expansion errors for a long time, was not being given
2691 for the ${if def:h_colon_omitted{... case.
2693 PH/34 The spec says: "With one important exception, whenever a domain list is
2694 being scanned, $domain contains the subject domain." There was at least
2695 one case where this was not true.
2697 PH/35 The error "getsockname() failed: connection reset by peer" was being
2698 written to the panic log as well as the main log, but it isn't really
2699 panic-worthy as it just means the connection died rather early on. I have
2700 removed the panic log writing for the ECONNRESET error when getsockname()
2703 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
2704 runs only) independently of the message's sender address. This meant
2705 that, if the 4xx error was in fact related to the sender, a different
2706 message to the same recipient with a different sender could confuse
2707 things. In particular, this can happen when sending to a greylisting
2708 server, but other circumstances could also provoke similar problems.
2709 I have changed the default so that the retry time for these errors is now
2710 based a combination of the sender and recipient addresses. This change
2711 can be overridden by setting address_retry_include_sender=false in the
2714 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
2715 remote server are returned as part of bounce messages. This was not
2716 happening for LMTP over a pipe (the lmtp transport), but now it is the
2717 same for both kinds of LMTP.
2719 PH/38 Despite being documented as not happening, Exim was rewriting addresses
2720 in header lines that were in fact CNAMEs. This is no longer the case.
2722 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
2723 and queue runs started by the daemon processed all messages. This has
2724 been fixed so that -R and -S can now usefully be given with -q<time>.
2726 PH/40 Import PCRE release 6.7 (fixes some bugs).
2728 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
2730 PH/42 Give an error if -q is specified more than once.
2732 PH/43 Renamed the variables $interface_address and $interface_port as
2733 $received_ip_address and $received_port, to make it clear that these
2734 values apply to message reception, and not to the outgoing interface when
2735 a message is delivered. (The old names remain recognized, of course.)
2737 PH/44 There was no timeout on the connect() call when using a Unix domain
2738 socket in the ${readsocket expansion. There now is.
2740 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
2741 be meaningful with "accept".
2743 SC/01 Eximstats V1.43
2744 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
2746 SC/02 Eximstats V1.44
2747 Use a glob alias rather than an array ref in the generated
2748 parser. This improves both readability and performance.
2750 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
2751 Collect SpamAssassin and rejection statistics.
2752 Don't display local sender or destination tables unless
2753 there is data to show.
2754 Added average volumes into the top table text output.
2756 SC/04 Eximstats V1.46
2757 Collect data on the number of addresses (recipients)
2758 as well as the number of messages.
2760 SC/05 Eximstats V1.47
2761 Added 'Message too big' to the list of mail rejection
2762 reasons (thanks to Marco Gaiarin).
2764 SC/06 Eximstats V1.48
2765 Mainlog lines which have GMT offsets and are too short to
2766 have a flag are now skipped.
2768 SC/07 Eximstats V1.49 (Alain Williams)
2769 Added the -emptyok flag.
2771 SC/08 Eximstats V1.50
2772 Fixes for obtaining the IP address from reject messages.
2774 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
2775 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
2776 whitespace changes from 4.64-PH/27
2778 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
2781 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
2782 are found, allow negative numbers in numeric criteria)
2784 JJ/06 exipick.20061117.2, added new $message_body_missing variable
2786 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
2787 to match changes made in 4.64-PH/43
2789 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
2791 PH/47 Put in an explicit test for a DNS lookup of an address record where the
2792 "domain" is actually an IP address, and force a failure. This locks out
2793 those revolvers/nameservers that support "A-for-A" lookups, in
2794 contravention of the specifications.
2796 PH/48 When a host name was looked up from an IP address, and the subsequent
2797 forward lookup of the name timed out, the host name was left in
2798 $sender_host_name, contrary to the specification.
2800 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
2801 restricted to single-key lookups, Exim was not diagnosing an error if
2802 * or *@ was used with a query-style lookup.
2804 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
2806 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
2807 long ago, but noone interested enough thought of it. Let's just say that
2808 the "1.1" means that there are some new functions that weren't there at
2809 some point in the past.
2811 PH/51 Error processing for expansion failure of helo_data from an smtp
2812 transport during callout processing was broken.
2814 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
2815 tested/used via the -bh/-bhc/-bs options.
2817 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
2818 bug, fixed in subsequent PCRE releases).
2820 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
2821 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
2823 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
2829 SC/01 Use a glob alias rather than an array ref in eximstats generated
2830 parser. This improves both readability and performance.
2832 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
2833 Don't display local sender or destination tables in eximstats unless
2834 there is data to show.
2835 Added average volumes into the eximstats top table text output.
2837 SC/03 Collect data on the number of addresses (recipients) as well
2838 as the number of messages in eximstats.
2840 TF/01 Correct an error in the documentation for the redirect router. Exim
2841 does (usually) call initgroups() when daemonizing.
2843 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
2844 with consistent privilege compared to when running as a daemon.
2846 TF/03 Note in the spec that $authenticated_id is not set for local
2847 submissions from trusted users.
2849 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
2850 Thanks to Dean Brooks <dean@iglou.com> for the patch.
2852 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
2853 by adding some example configuration directives to the default
2854 configuration file. A little bit of work is required to uncomment the
2855 directives and define how usernames and passwords are checked, but
2856 there is now a framework to start from.
2858 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
2859 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
2860 without this. I don't know how relevant this is to other LDAP libraries.
2862 PH/02 Add the verb name to the "unknown ACL verb" error.
2864 PH/03 Magnus Holmgren's patch for filter_prepend_home.
2866 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
2868 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
2869 directory not expanded when it should be if an expanded home directory
2870 was set for the address (which is overridden by the transport).
2872 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
2875 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
2876 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
2877 because it is too late at that time, and has no effect.
2879 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
2880 security issue with \' (bugzilla #107). I could not use the
2881 PQescapeStringConn() function, because it needs a PGconn value as one of
2884 PH/08 When testing addresses using -bt, indicate those final addresses that
2885 are duplicates that would not cause an additional delivery. At least one
2886 person was confused, thinking that -bt output corresponded to deliveries.
2887 (Suppressing duplicates isn't a good idea as you lose the information
2888 about possibly different redirections that led to the duplicates.)
2890 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
2891 systems where poll() doesn't work, in particular OS X.
2893 PH/10 Added more information to debugging output for retry time not reached.
2895 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
2896 operations in malware.c.
2898 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
2901 PH/13 If write_rejectlog was set false when logging was sent to syslog with
2902 syslog_duplication set false, log lines that would normally be written
2903 both the the main log and to the reject log were not written to syslog at
2906 PH/14 In the default configuration, change the use of "message" in ACL warn
2907 statements to "add_header".
2909 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
2910 not followed by a command (e.g. "seen endif").
2912 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
2913 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
2916 PH/17 Added extra conditions to the default value of delay_warning_condition
2920 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
2921 { match{$h_precedence:}{(?i)bulk|list|junk} } \
2922 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
2925 The Auto-Submitted: and various List- headers are standardised, whereas I
2926 don't think Precedence: ever was.
2928 PH/18 Refactored debugging code in route_finduser() to show more information,
2929 in particular, the error code if getpwnam() issues one.
2931 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
2932 This is apparently needed in addition to the PH/07 change above to avoid
2933 any possible encoding problems.
2935 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
2936 but not after initializing Perl.
2938 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
2939 output them only if debugging. By default they are written stderr,
2940 apparently, which is not desirable.
2942 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
2945 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
2948 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
2950 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
2951 authenticated or an ident call has been made. Suppress the default
2952 values for $authenticated_id and $authenticated_sender (but permit -oMai
2953 and -oMas) when testing with -bh.
2955 PH/24 Re-jigged the order of the tests in the default configuration so that the
2956 tests for valid domains and recipients precede the DNS black list and CSA
2957 tests, on the grounds that those ones are more expensive.
2959 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
2960 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
2961 This bug exists in every version of Exim that I still have, right back to
2964 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
2965 However, an attempt to turn on case-sensitivity in a regex key by
2966 including (?-i) didn't work because the subject string was already
2967 lowercased, and the effects were non-intuitive. It turns out that a
2968 one-line patch can be used to allow (?-i) to work as expected.
2974 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
2975 other effects) broke the use of negated acl sub-conditions.
2977 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
2980 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
2981 "Deny" causes Exim to reject the incoming connection with a 554 error.
2982 Unfortunately, if there is a major crisis, such as a disk failure,
2983 tcp-wrappers gives "deny", whereas what one would like would be some
2984 kind of temporary error. A kludge has been added to help with this.
2985 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
2986 554 error is used if errno is still zero or contains ENOENT (which occurs
2987 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
2990 PH/03 Add -lutil to the default FreeBSD LIBS setting.
2992 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
2993 errors. Otherwise a message that provokes a temporary error (when other
2994 messages do not) can cause a whole host to time out.
2996 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
2997 addresses were routed directly to files or pipes from a redirect router.
2998 File deliveries just didn't batch; pipe deliveries might have suffered
3001 PH/06 A failure to get a lock for a hints database would erroneously always say
3002 "Failed to get write lock", even when it was really a read lock.
3004 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
3005 of 0600. This has been changed to use the value of the lockfile_mode
3006 option (which defaults to 0600).
3008 PH/08 Applied small patch from the Sieve maintainer.
3010 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
3011 folder from quota calculations, a direct delivery into this folder messed
3012 up the contents of the maildirsize file. This was because the regex was
3013 used only to exclude .Trash (or whatever) when the size of the mailbox
3014 was calculated. There was no check that a delivery was happening into an
3015 excluded directory. This bug has been fixed by ignoring all quota
3016 processing for deliveries into excluded directories.
3018 PH/10 Added the maildirfolder_create_regex option to appendfile.
3024 PH/01 The code for finding all the local interface addresses on a FreeBSD
3025 system running IPv6 was broken. This may well have applied to all BSD
3026 systems, as well as to others that have similar system calls. The broken
3027 code found IPv4 interfaces correctly, but gave incorrect values for the
3028 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
3029 that it would not match correctly against @[] and not recognize the IPv6
3032 PH/02 The ipliteral router was not recognizing addresses of the form user@
3033 [ipv6:....] because it didn't know about the "ipv6:" prefix.
3035 PH/03 Added disable_ipv6.
3037 PH/04 Changed $reply_address to use the raw form of the headers instead of the
3038 decoded form, because it is most often used to construct To: headers
3039 lines in autoreplies, and the decoded form may well be syntactically
3040 invalid. However, $reply_address has leading white space removed, and all
3041 newlines turned into spaces so that the autoreply transport does not
3044 PH/05 If group was specified without a user on a router, and no group or user
3045 was specified on a transport, the group from the router was ignored.
3047 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
3048 for visible compile-time settings that can be used to change these
3049 numbers, for those that want even more. Backwards compatibility with old
3050 spool files has been maintained. However, going back to a previous Exim
3051 release will lost any variables that are in spool files.
3053 PH/07 Two small changes when running in the test harness: increase delay when
3054 passing a TCP/IP connection to a new process, in case the original
3055 process has to generate a bounce, and remove special handling of
3056 127.0.0.2 (sic), which is no longer necessary.
3058 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
3059 be the same on different OS.
3061 PH/09 Moved a debug statement in filter processing to avoid a race problem when
3064 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
3065 whether --show-vars was specified or not
3067 JJ/02 exipick: Added support for new ACL variable spool format introduced
3070 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
3071 syntactically invalid From: or Reply-to: line, and a filter used this to
3072 generate an autoreply, and therefore failed to obtain an address for the
3073 autoreply, Exim could try to deliver to a non-existent relative file
3074 name, causing unrelated and misleading errors. What now happens is that
3075 it logs this as a hard delivery error, but does not attempt to create a
3078 PH/11 The exinext utility has a -C option for testing purposes, but although
3079 the given file was scanned by exinext itself; it wasn't being passed on
3080 when Exim was called.
3082 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
3083 an end-of-file indication when reading a command response.
3085 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
3086 compiled. In many other places in Exim, IPv6 addresses are always
3087 recognized, so I have changed this. It also means that IPv4 domain
3088 literals of the form [IPV4:n.n.n.n] are now always recognized.
3090 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
3091 used if the router is not running as root, for example, when verifying at
3092 ACL time, or when using -bh. The debugging output from this situation was
3093 non-existent - all you got was a failure to exec. I have made two
3096 (a) Failures to set uid/gid, the current directory, or a process leader
3097 in a subprocess such as that created by queryprogram now generate
3098 suitable debugging output when -d is set.
3100 (b) The queryprogram router detects when it is not running as root,
3101 outputs suitable debugging information if -d is set, and then runs
3102 the subprocess without attempting to change uid/gid.
3104 PH/15 Minor change to Makefile for building test_host (undocumented testing
3107 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
3108 additional section of a DNS packet that returns MX or SRV records.
3109 Instead, it always explicitly searches for A/AAAA records. This avoids
3110 major problems that occur when a DNS server includes only records of one
3111 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
3112 fixed another bug: if SRV records were looked up and the corresponding
3113 address records were *not* found in the additional section, the port
3114 values from the SRV records were lost.
3116 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
3117 using the correct key (the original address) when searching the retry
3118 rules in order to find which one to use for generating the retry hint.
3120 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
3121 adding the default one. Similarly, if it contains a Reply-To: header, the
3122 errors_reply_to option, if set, is not used.
3124 PH/19 When calculating a retry time, Exim used to measure the "time since
3125 failure" by looking at the "first failed" field in the retry record. Now
3126 it does not use this if it is later than than the arrival time of the
3127 message. Instead it uses the arrival time. This makes for better
3128 behaviour in cases where some deliveries succeed, thus re-setting the
3129 "first failed" field. An example is a quota failure for a huge message
3130 when small messages continue to be delivered. Without this change, the
3131 "time since failure" will always be short, possible causing more frequent
3132 delivery attempts for the huge message than are intended.
3133 [Note: This change was subsequently modified - see PH/04 for 4.62.]
3135 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
3136 $1, $2, $3) because the numerical variables can be reset during some
3137 expansion items (e.g. "match"), thereby losing the authentication data.
3139 PH/21 Make -bV show the size of off_t variables so that the test suite can
3140 decide whether to run tests for quotas > 2G.
3142 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
3143 mailbox_size, and mailbox_filecount in the appendfile transport. If a
3144 filecount value is greater than 2G or if a quota value is greater than 2G
3145 on a system where the size of off_t is not greater than 4, a panic error
3148 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
3149 never match. The debug and -bh output now contains an explicit error
3150 message indicating a malformed IPv4 address or mask.
3152 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
3153 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
3154 PH/23 above applies.
3156 PH/25 Do not write to syslog when running in the test harness. The only
3157 occasion when this arises is a failure to open the main or panic logs
3158 (for which there is an explicit test).
3160 PH/26 Added the /no_tell option to "control=freeze".
3162 PH/27 If a host name lookup failed very early in a connection, for example, if
3163 the IP address matched host_lookup and the reverse lookup yielded a name
3164 that did not have a forward lookup, an error message of the form "no IP
3165 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
3166 could be logged. Now it outputs the IP address instead of "NULL".
3168 PH/28 An enabling patch from MH: add new function child_open_exim2() which
3169 allows the sender and the authenticated sender to be set when
3170 submitting a message from within Exim. Since child_open_exim() is
3171 documented for local_scan(), the new function should be too.
3173 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
3174 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
3175 results in an empty string is now treated as unset.
3177 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
3179 PH/31 Added sender_verify_fail logging option.
3181 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
3182 needed by RFC 822 but not by RFC 2822 was commented out. I have now
3183 tidied the source and removed it altogether.
3185 PH/33 When a queue run was abandoned because the load average was too high, a
3186 log line was always written; now it is written only if the queue_run log
3187 selector is set. In addition, the log line for abandonment now contains
3188 information about the queue run such as the pid. This is always present
3189 in "start" and "stop" lines but was omitted from the "abandon" line.
3191 PH/34 Omit spaces between a header name and the colon in the error message that
3192 is given when verify = headers_syntax fails (if there are lots of them,
3193 the message gets confusing).
3195 PH/35 Change the default for dns_check_names_pattern to allow slashes within
3196 names, as there are now some PTR records that contain slashes. This check
3197 is only to protect against broken name servers that fall over on strange
3198 characters, so the fact that it applies to all lookups doesn't matter.
3200 PH/36 Now that the new test suite is complete, we can remove some of the
3201 special code in Exim that was needed for the old test suite. For example,
3202 sorting DNS records because real resolvers return them in an arbitrary
3203 order. The new test suite's fake resolver always returns records in the
3206 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
3207 bounces) except when queue_only is set, to avoid logging races between
3208 the different processes.
3210 PH/38 Panic-die if .include specifies a non-absolute path.
3212 PH/39 A tweak to the "H" retry rule from its user.
3214 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
3215 a label. They prevented compilation on older perls.
3217 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
3218 a warning to be raised on newish perls.
3220 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
3221 on queue. Changes to match documented behaviour of showing count of
3222 messages matching specified criteria.
3224 PH/40 Changed the default ident timeout from 30s to 5s.
3226 PH/41 Added support for the use of login_cap features, on those BSD systems
3227 that have them, for controlling the resources used by pipe deliveries.
3229 PH/42 The content-scanning code uses fopen() to create files in which to put
3230 message data. Previously it was not paying any attention to the mode of
3231 the files. Exim runs with umask(0) because the rest of the code creates
3232 files with open(), and sets the required mode explicitly. Thus, these
3233 files were ending up world-writeable. This was not a big issue, because,
3234 being within the spool directory, they were not world-accessible. I have
3235 created a function called modefopen, which takes an additional mode
3236 argument. It sets umask(777), creates the file, chmods it to the required
3237 mode, then resets the umask. All the relevant calls to fopen() in the
3238 content scanning code have been changed to use this function.
3240 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
3241 to 24 hours. This avoids potential overflow problems when processing G
3242 and H retry rules. I suspect nobody ever tinkers with this value.
3244 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
3246 PH/45 When the plaintext authenticator is running as a client, the server's
3247 challenges are checked to ensure they are valid base64 strings. By
3248 default, the authentication attempt is cancelled if an invalid string is
3249 received. Setting client_ignore_invalid_base64 true ignores these errors.
3250 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
3251 they are received. Thus, the responses can be made to depend on the
3252 challenges. If an invalid string is ignored, an empty string is placed in
3255 PH/46 Messages that are created by the autoreply transport now contains a
3256 References: header, in accordance with RFCs 2822 and 3834.
3258 PH/47 Added authenticated_sender_force to the smtp transport.
3260 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
3262 PH/49 Installed latest patch from the Sieve maintainer.
3264 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
3265 was also set, the appendfile transport was unnecessarily scanning a
3266 directory of message files (e.g. for maildir delivery) to find the count
3267 of files (along with the size), even though it did not need this
3268 information. It now does the scan only if it needs to find either the
3269 size of the count of files.
3271 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
3273 PH/52 Two bugs concerned with error handling when the smtp transport is
3276 (i) Exim was not creating retry information for temporary errors given
3277 for individual recipients after the DATA command when the smtp transport
3278 was used in LMTP mode. This meant that they could be retried too
3279 frequently, and not timed out correctly.
3281 (ii) Exim was setting the flag that allows error details to be returned
3282 for LMTP errors on RCPT commands, but not for LMTP errors for individual
3283 recipients that were returned after the DATA command.
3285 PH/53 This is related to PH/52, but is more general: for any failing address,
3286 when detailed error information was permitted to be returned to the
3287 sender, but the error was temporary, then after the final timeout, only
3288 "retry timeout exceeded" was returned. Now it returns the full error as
3289 well as "retry timeout exceeded".
3291 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
3292 do this, and (what is worse) MTAs that accept it.
3294 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
3295 will now be deprecated.
3297 PH/56 New os.c-cygwin from the Cygwin maintainer.
3299 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
3300 formats (previously only available in exim formats via -bpr, -bpru,
3301 and -bpra. Now also available in native and exiqgrep formats)
3303 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
3304 with very large, slow to parse queues
3306 JJ/08 exipick: added ! as generic prefix to negate any criteria format
3308 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
3310 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
3311 responses to authentication challenges, though it was showing the
3312 challenges; (ii) I've removed the CR characters from the debug output for
3315 PH/58 Allow for the insertion of a newline as well as a space when a string
3316 is turned into more than one encoded-word during RFC 2047 encoding. The
3317 Sieve code now uses this.
3319 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
3320 data_4xx, lost_connection, tls_required.
3322 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
3323 message was being sent as an SMTP response.
3325 PH/61 Add -l and -k options to exicyclog.
3327 PH/62 When verifying, if an address was redirected to one new address, so that
3328 verification continued, and the new address failed or deferred after
3329 having set something in $address_data, the value of $address_data was not
3330 passed back to the ACL. This was different to the case when no
3331 redirection occurred. The value is now passed back in both cases.
3333 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
3334 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
3335 use login_cap.h, so on its own it isn't the distinguishing feature. The
3336 new name refers directly to the setclassresources() function.
3338 PH/65 Added configuration files for NetBSD3.
3340 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
3342 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
3343 is preferred over IPv4.
3345 PH/68 The bounce_return_message and bounce_return_body options were not being
3346 honoured for bounces generated during the reception of non-SMTP messages.
3347 In particular, this applied to messages rejected by the ACL. This bug has
3348 been fixed. However, if bounce_return_message is true and bounce_return_
3349 body is false, the headers that are returned for a non-SMTP message
3350 include only those that have been read before the error was detected.
3351 (In the case of an ACL rejection, they have all been read.)
3353 PH/69 The HTML version of the specification is now built in a directory called
3354 spec_html instead of spec.html, because the latter looks like a path with
3355 a MIME-type, and this confuses some software.
3357 PH/70 Catch two compiler warnings in sieve.c.
3359 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
3360 function verify_get_ident() calls ip_connect() to connect a socket, but
3361 if the "connect()" function timed out, ip_connect() used to close the
3362 socket. However, verify_get_ident() also closes the socket later, and in
3363 between Exim writes to the log, which may get opened at this point. When
3364 the socket was closed in ip_connect(), the log could get the same file
3365 descriptor number as the socket. This naturally causes chaos. The fix is
3366 not to close the socket in ip_connect(); the socket should be closed by
3367 the function that creates it. There was only one place in the code where
3368 this was missing, in the iplookup router, which I don't think anybody now
3369 uses, but I've fixed it anyway.
3371 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
3372 well as to direct DNS lookups. Otherwise the handling of names in host
3373 lists is inconsistent and therefore confusing.
3379 PH/01 Two changes to the default runtime configuration:
3381 (1) Move the checks for relay_from_hosts and authenticated clients from
3382 after to before the (commented out) DNS black list checks.
3384 (2) Add control=submission to the relay_from_hosts and authenticated
3385 clients checks, on the grounds that messages accepted by these
3386 statements are most likely to be submissions.
3388 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
3390 (1) Generate an error if the third argument for the ${prvs expansion is
3393 (2) Treat a missing third argument of ${prvscheck as if it were an empty
3396 (3) Reset the variables that are obtained from the first argument of
3397 ${prvscheck and used in the second argument before leaving the code,
3398 because their memory is reclaimed, so using them afterwards may do
3401 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
3402 one (it's much easier than Tom thought :-).
3404 (5) Because of (4), we can now allow for the use of $prvscheck_result
3405 inside the third argument.
3407 PH/03 For some reason, the default setting of PATH when running a command from
3408 a pipe transport was just "/usr/bin". I have changed it to
3411 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
3412 anything to be listed in the output from -bV.
3414 PH/05 When a filter generated an autoreply, the entire To: header line was
3415 quoted in the delivery log line, like this:
3417 => >A.N.Other <ano@some.domain> <original@ddress> ...
3419 This has been changed so that it extracts the operative address. There
3420 may be more than one such address. If so, they are comma-separated, like
3423 => >ano@some.domain,ona@other.domain <original@ddress> ...
3425 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
3426 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
3427 not being looked up in the rDNS to get a host name, Exim was showing the
3428 IP address twice in Received: lines, even though the IP addresses were
3429 identical. For example:
3431 Received: from [1.2.3.4] (helo=[1.2.3.4])
3433 However, if the real host name was known, it was omitting the HELO data
3434 if it matched the actual IP address. This has been tidied up so that it
3435 doesn't show the same IP address twice.
3437 PH/07 When both +timestamp and +memory debugging was on, the value given by
3438 $tod_xxx expansions could be wrong, because the tod_stamp() function was
3439 called by the debug printing, thereby overwriting the timestamp buffer.
3440 Debugging no longer uses the tod_stamp() function when +timestamp is set.
3442 PH/08 When the original message was included in an autoreply transport, it
3443 always said "this is a copy of the message, including all the headers",
3444 even if body_only or headers_only was set. It now gives an appropriate
3447 PH/09 Applied a patch from the Sieve maintainer which:
3449 o fixes some comments
3450 o adds the (disabled) notify extension core
3451 o adds some debug output for the result of if/elsif tests
3452 o points to the current vacation draft in the documentation
3453 and documents the missing references header update
3457 o fixes a bug in processing the envelope test (when testing
3458 multiple envelope elements, the last element determined the
3461 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
3462 Electronic Mail") by including:
3464 Auto-submitted: auto-generated
3466 in the messages that it generates (bounce messages and others, such as
3467 warnings). In the case of bounce messages for non-SMTP messages, there was
3468 also a typo: it was using "Auto_submitted" (underscore instead of
3469 hyphen). Since every message generated by Exim is necessarily in response
3470 to another message, thes have all been changed to:
3472 Auto-Submitted: auto-replied
3474 in accordance with these statements in the RFC:
3476 The auto-replied keyword:
3478 - SHOULD be used on messages sent in direct response to another
3479 message by an automatic process,
3481 - MUST NOT be used on manually-generated messages,
3483 - MAY be used on Delivery Status Notifications (DSNs) and Message
3484 Disposition Notifications (MDNs),
3486 - MUST NOT be used on messages generated by automatic or periodic
3487 processes, except for messages which are automatic responses to
3490 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
3491 to the default Received: header definition.
3493 PH/12 Added log selector acl_warn_skipped (default on).
3495 PH/13 After a successful wildlsearch lookup, discard the values of numeric
3496 variables because (a) they are in the wrong storage pool and (b) even if
3497 they were copied, it wouldn't work properly because of the caching.
3499 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
3500 checking when decoding. Apparently there are clients that generate
3501 overlong encoded strings. Why am I not surprised?
3503 PH/15 If the first argument of "${if match_address" was not empty, but did not
3504 contain an "@" character, Exim crashed. Now it writes a panic log message
3505 and treats the condition as false.
3507 PH/16 In autoreply, treat an empty string for "once" the same as unset.
3509 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
3510 extension "envelope-auth". The code is finished and in agreement with
3511 other implementations, but there is no documentation so far and in fact,
3512 nobody wrote the draft yet. This extension is currently #undef'ed, thus
3513 not changing the active code.
3515 Print executed "if" and "elsif" statements when debugging is used. This
3516 helps a great deal to understand what a filter does.
3518 Document more things not specified clearly in RFC3028. I had all this
3519 sorted out, when out of a sudden new issues came to my mind. Oops."
3521 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
3524 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
3525 canonical form (as documented). However, after a host name lookup from
3526 the IP address, check_host() was doing a simple string comparison with
3527 addresses acquired from the DNS when checking that the found name did
3528 have the original IP as one of its addresses. Since any found IPv6
3529 addresses are likely to be in abbreviated form, the comparison could
3530 fail. Luckily, there already exists a function for doing the comparison
3531 by converting both addresses to binary, so now that is used instead of
3532 the text comparison.
3534 PH/20 There was another similar case to PH/19, when a complete host name was
3535 given in a host list; looking up its IP address could give an abbreviated
3536 form, whereas the current host's name might or might not be abbreviated.
3537 The same fix has been applied.
3543 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
3544 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
3547 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
3548 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
3550 PH/03 Typo: missing ".o" in src/pcre/Makefile.
3552 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
3553 header line, restrict the check to what is listed in RFCs 2369 and 2929.
3554 Also, for "Auto-Submitted", treat anything other than "no" as
3555 non-personal, in accordance with RFC 3834. (Previously it treated
3556 anything starting "auto-" as non-personal.)
3558 TF/01 The control=submission/name=... option had a problem with syntax
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