Make lockfile_mode apply to MBX lock files.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
7e9f683d 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.346 2006/04/25 10:06:30 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
c887c79e
TF
6Exim version 4.62
7-----------------
8
9TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
10 other effects) broke the use of negated acl sub-conditions.
11
1cce3af8
PH
12PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
13 patch).
14
afb3eaaf
PH
15PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
16 "Deny" causes Exim to reject the incoming connection with a 554 error.
17 Unfortunately, if there is a major crisis, such as a disk failure,
18 tcp-wrappers gives "deny", whereas what one would like would be some
19 kind of temporary error. A kludge has been added to help with this.
20 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
21 554 error is used if errno is still zero or contains ENOENT (which occurs
22 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
23 451 error is used.
24
e173618b
PH
25PH/03 Add -lutil to the default FreeBSD LIBS setting.
26
dd16e114
PH
27PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
28 errors. Otherwise a message that provokes a temporary error (when other
29 messages do not) can cause a whole host to time out.
30
f7fd3850
PH
31PH/05 Batch deliveries by appendfile and pipe transports did not work when the
32 addresses were routed directly to files or pipes from a redirect router.
33 File deliveries just didn't batch; pipe deliveries might have suffered
34 odd errors.
35
d87df92c
PH
36PH/06 A failure to get a lock for a hints database would erroneously always say
37 "Failed to get write lock", even when it was really a read lock.
38
7e9f683d
PH
39PH/07 The appendfile transport was creating MBX lock files with a fixed mode
40 of 0600. This has been changed to use the value of the lockfile_mode
41 option (which defaults to 0600).
42
1cce3af8 43
214e2000
PH
44Exim version 4.61
45-----------------
46
47PH/01 The code for finding all the local interface addresses on a FreeBSD
48 system running IPv6 was broken. This may well have applied to all BSD
49 systems, as well as to others that have similar system calls. The broken
50 code found IPv4 interfaces correctly, but gave incorrect values for the
51 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
52 that it would not match correctly against @[] and not recognize the IPv6
53 addresses as local.
54
f9daeae0
PH
55PH/02 The ipliteral router was not recognizing addresses of the form user@
56 [ipv6:....] because it didn't know about the "ipv6:" prefix.
57
7e66e54d
PH
58PH/03 Added disable_ipv6.
59
c8ea1597
PH
60PH/04 Changed $reply_address to use the raw form of the headers instead of the
61 decoded form, because it is most often used to construct To: headers
62 lines in autoreplies, and the decoded form may well be syntactically
63 invalid. However, $reply_address has leading white space removed, and all
64 newlines turned into spaces so that the autoreply transport does not
65 grumble.
66
911f6fde
PH
67PH/05 If group was specified without a user on a router, and no group or user
68 was specified on a transport, the group from the router was ignored.
69
47ca6d6c
PH
70PH/06 Increased the number of ACL variables to 20 of each type, and arranged
71 for visible compile-time settings that can be used to change these
72 numbers, for those that want even more. Backwards compatibility with old
73 spool files has been maintained. However, going back to a previous Exim
74 release will lost any variables that are in spool files.
75
ed0e9820
PH
76PH/07 Two small changes when running in the test harness: increase delay when
77 passing a TCP/IP connection to a new process, in case the original
78 process has to generate a bounce, and remove special handling of
79 127.0.0.2 (sic), which is no longer necessary.
80
eff37e47
PH
81PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
82 be the same on different OS.
83
1921d2ea
PH
84PH/09 Moved a debug statement in filter processing to avoid a race problem when
85 testing.
86
b3f69ca8
JJ
87JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
88 whether --show-vars was specified or not
89
90JJ/02 exipick: Added support for new ACL variable spool format introduced
91 in 4.61-PH/06
92
424a1c63
PH
93PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
94 syntactically invalid From: or Reply-to: line, and a filter used this to
95 generate an autoreply, and therefore failed to obtain an address for the
96 autoreply, Exim could try to deliver to a non-existent relative file
97 name, causing unrelated and misleading errors. What now happens is that
98 it logs this as a hard delivery error, but does not attempt to create a
99 bounce message.
100
7a100415
PH
101PH/11 The exinext utility has a -C option for testing purposes, but although
102 the given file was scanned by exinext itself; it wasn't being passed on
103 when Exim was called.
104
19b9dc85
PH
105PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
106 an end-of-file indication when reading a command response.
107
309bd837
PH
108PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
109 compiled. In many other places in Exim, IPv6 addresses are always
110 recognized, so I have changed this. It also means that IPv4 domain
111 literals of the form [IPV4:n.n.n.n] are now always recognized.
112
59e82a2a
PH
113PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
114 used if the router is not running as root, for example, when verifying at
115 ACL time, or when using -bh. The debugging output from this situation was
116 non-existent - all you got was a failure to exec. I have made two
117 changes:
118
119 (a) Failures to set uid/gid, the current directory, or a process leader
120 in a subprocess such as that created by queryprogram now generate
121 suitable debugging ouput when -d is set.
122
123 (b) The queryprogram router detects when it is not running as root,
124 outputs suitable debugging information if -d is set, and then runs
125 the subprocess without attempting to change uid/gid.
126
9edc04ce
PH
127PH/15 Minor change to Makefile for building test_host (undocumented testing
128 feature).
129
1349e1e5
PH
130PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
131 additional section of a DNS packet that returns MX or SRV records.
132 Instead, it always explicitly searches for A/AAAA records. This avoids
133 major problems that occur when a DNS server includes only records of one
134 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
135 fixed another bug: if SRV records were looked up and the corresponding
136 address records were *not* found in the additional section, the port
137 values from the SRV records were lost.
138
ea49d0e1
PH
139PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
140 using the correct key (the original address) when searching the retry
141 rules in order to find which one to use for generating the retry hint.
142
064a94c9
PH
143PH/18 If quota_warn_message contains a From: header, Exim now refrains from
144 adding the default one. Similarly, if it contains a Reply-To: header, the
145 errors_reply_to option, if set, is not used.
146
727071f8
PH
147PH/19 When calculating a retry time, Exim used to measure the "time since
148 failure" by looking at the "first failed" field in the retry record. Now
149 it does not use this if it is later than than the arrival time of the
150 message. Instead it uses the arrival time. This makes for better
151 behaviour in cases where some deliveries succeed, thus re-setting the
152 "first failed" field. An example is a quota failure for a huge message
153 when small messages continue to be delivered. Without this change, the
154 "time since failure" will always be short, possible causing more frequent
155 delivery attempts for the huge message than are intended.
dd16e114 156 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 157
f78eb7c6
PH
158PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
159 $1, $2, $3) because the numerical variables can be reset during some
160 expansion items (e.g. "match"), thereby losing the authentication data.
161
21c28500
PH
162PH/21 Make -bV show the size of off_t variables so that the test suite can
163 decide whether to run tests for quotas > 2G.
164
165PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
166 mailbox_size, and mailbox_filecount in the appendfile transport. If a
167 filecount value is greater than 2G or if a quota value is greater than 2G
168 on a system where the size of off_t is not greater than 4, a panic error
169 is given.
170
1688f43b
PH
171PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
172 never match. The debug and -bh output now contains an explicit error
173 message indicating a malformed IPv4 address or mask.
174
175PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
176 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
177 PH/23 above applies.
178
9675b384
PH
179PH/25 Do not write to syslog when running in the test harness. The only
180 occasion when this arises is a failure to open the main or panic logs
181 (for which there is an explicit test).
182
6a3f1455
PH
183PH/26 Added the /no_tell option to "control=freeze".
184
dac79d3e
PH
185PH/27 If a host name lookup failed very early in a connection, for example, if
186 the IP address matched host_lookup and the reverse lookup yielded a name
187 that did not have a forward lookup, an error message of the form "no IP
188 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
189 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 190
5977a0b3
PH
191PH/28 An enabling patch from MH: add new function child_open_exim2() which
192 allows the sender and the authenticated sender to be set when
193 submitting a message from within Exim. Since child_open_exim() is
194 documented for local_scan(), the new function should be too.
195
c91535f3
PH
196PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
197 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
198 results in an empty string is now treated as unset.
199
0d46a8c8
PH
200PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
201
278c6e6c
PH
202PH/31 Added sender_verify_fail logging option.
203
2cbb4081
PH
204PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
205 needed by RFC 822 but not by RFC 2822 was commented out. I have now
206 tidied the source and removed it altogether.
207
3eef829e
PH
208PH/33 When a queue run was abandoned because the load average was too high, a
209 log line was always written; now it is written only if the queue_run log
210 selector is set. In addition, the log line for abandonment now contains
211 information about the queue run such as the pid. This is always present
212 in "start" and "stop" lines but was omitted from the "abandon" line.
213
1ab95fa6
PH
214PH/34 Omit spaces between a header name and the colon in the error message that
215 is given when verify = headers_syntax fails (if there are lots of them,
216 the message gets confusing).
217
230205fc
PH
218PH/35 Change the default for dns_check_names_pattern to allow slashes within
219 names, as there are now some PTR records that contain slashes. This check
220 is only to protect against broken name servers that fall over on strange
221 characters, so the fact that it applies to all lookups doesn't matter.
222
75e0e026
PH
223PH/36 Now that the new test suite is complete, we can remove some of the
224 special code in Exim that was needed for the old test suite. For example,
225 sorting DNS records because real resolvers return them in an arbitrary
226 order. The new test suite's fake resolver always returns records in the
227 same order.
228
229PH/37 When running in the test harness, use -odi for submitted messages (e.g.
230 bounces) except when queue_only is set, to avoid logging races between
231 the different processes.
232
145396a6
PH
233PH/38 Panic-die if .include specifies a non-absolute path.
234
3cd34f13
PH
235PH/39 A tweak to the "H" retry rule from its user.
236
11121d3d
JJ
237JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
238 a label. They prevented compilation on older perls.
239
240JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
241 a warning to be raised on newish perls.
242
243JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
244 on queue. Changes to match documented behaviour of showing count of
245 messages matching specified criteria.
246
8def5aaf
PH
247PH/40 Changed the default ident timeout from 30s to 5s.
248
929ba01c
PH
249PH/41 Added support for the use of login_cap features, on those BSD systems
250 that have them, for controlling the resources used by pipe deliveries.
251
2632889e
PH
252PH/42 The content-scanning code uses fopen() to create files in which to put
253 message data. Previously it was not paying any attention to the mode of
254 the files. Exim runs with umask(0) because the rest of the code creates
255 files with open(), and sets the required mode explicitly. Thus, these
256 files were ending up world-writeable. This was not a big issue, because,
257 being within the spool directory, they were not world-accessible. I have
258 created a function called modefopen, which takes an additional mode
259 argument. It sets umask(777), creates the file, chmods it to the required
260 mode, then resets the umask. All the relevant calls to fopen() in the
261 content scanning code have been changed to use this function.
262
944a9c55
PH
263PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
264 to 24 hours. This avoids potential overflow problems when processing G
265 and H retry rules. I suspect nobody ever tinkers with this value.
266
4a23603b
PH
267PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
268
4730f942
PH
269PH/45 When the plaintext authenticator is running as a client, the server's
270 challenges are checked to ensure they are valid base64 strings. By
271 default, the authentication attempt is cancelled if an invalid string is
272 received. Setting client_ignore_invalid_base64 true ignores these errors.
273 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
274 they are received. Thus, the responses can be made to depend on the
275 challenges. If an invalid string is ignored, an empty string is placed in
276 the variable.
277
30dba1e6
PH
278PH/46 Messages that are created by the autoreply transport now contains a
279 References: header, in accordance with RFCs 2822 and 3834.
280
382afc6b
PH
281PH/47 Added authenticated_sender_force to the smtp transport.
282
a86229cf
PH
283PH/48 The ${prvs expansion was broken on systems where time_t was long long.
284
50c99ba6
PH
285PH/49 Installed latest patch from the Sieve maintainer.
286
d35e429d
PH
287PH/50 When an Exim quota was set without a file count quota, and mailbox_size
288 was also set, the appendfile transport was unnecessarily scanning a
289 directory of message files (e.g. for maildir delivery) to find the count
290 of files (along with the size), even though it did not need this
291 information. It now does the scan only if it needs to find either the
292 size of the count of files.
293
f90d018c
PH
294PH/51 Added ${time_eval: to convert Exim time strings into seconds.
295
75def545
PH
296PH/52 Two bugs concerned with error handling when the smtp transport is
297 used in LMTP mode:
298
299 (i) Exim was not creating retry information for temporary errors given
300 for individual recipients after the DATA command when the smtp transport
301 was used in LMTP mode. This meant that they could be retried too
302 frequently, and not timed out correctly.
303
304 (ii) Exim was setting the flag that allows error details to be returned
305 for LMTP errors on RCPT commands, but not for LMTP errors for individual
306 recipients that were returned after the DATA command.
307
308PH/53 This is related to PH/52, but is more general: for any failing address,
309 when detailed error information was permitted to be returned to the
310 sender, but the error was temporary, then after the final timeout, only
311 "retry timeout exceeded" was returned. Now it returns the full error as
312 well as "retry timeout exceeded".
313
c46782ef
PH
314PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
315 do this, and (what is worse) MTAs that accept it.
316
71fafd95
PH
317PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
318 will now be deprecated.
319
2c5db4fd
PH
320PH/56 New os.c-cygwin from the Cygwin maintainer.
321
9cf6b11a
JJ
322JJ/06 exipick: added --unsorted option to allow unsorted output in all output
323 formats (previously only available in exim formats via -bpr, -bpru,
324 and -bpra. Now also available in native and exiqgrep formats)
325
326JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
327 with very large, slow to parse queues
328
329JJ/08 exipick: added ! as generic prefix to negate any criteria format
330
331JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
332
898d150f
PH
333PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
334 responses to authentication challenges, though it was showing the
335 challenges; (ii) I've removed the CR characters from the debug output for
336 SMTP output lines.
337
46218253
PH
338PH/58 Allow for the insertion of a newline as well as a space when a string
339 is turned into more than one encoded-word during RFC 2047 encoding. The
340 Sieve code now uses this.
341
e97957bc
PH
342PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
343 data_4xx, lost_connection, tls_required.
344
81e509d7
PH
345PH/60 When a VRFY deferred or FAILED, the log message rather than the user
346 message was being sent as an SMTP response.
347
3d240ff7
PH
348PH/61 Add -l and -k options to exicyclog.
349
b37c4101
PH
350PH/62 When verifying, if an address was redirected to one new address, so that
351 verification continued, and the new address failed or deferred after
352 having set something in $address_data, the value of $address_data was not
353 passed back to the ACL. This was different to the case when no
354 redirection occurred. The value is now passed back in both cases.
355
79378e0f
PH
356PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
357 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
358 use login_cap.h, so on its own it isn't the distinguishing feature. The
359 new name refers directly to the setclassresources() function.
360
e49c7bb4
PH
361PH/65 Added configuration files for NetBSD3.
362
d114ec46
PH
363PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
364
f3d7df6c
PH
365PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
366 is preferred over IPv4.
367
715ab376
PH
368PH/68 The bounce_return_message and bounce_return_body options were not being
369 honoured for bounces generated during the reception of non-SMTP messages.
370 In particular, this applied to messages rejected by the ACL. This bug has
371 been fixed. However, if bounce_return_message is true and bounce_return_
372 body is false, the headers that are returned for a non-SMTP message
373 include only those that have been read before the error was detected.
374 (In the case of an ACL rejection, they have all been read.)
375
6b31b150
PH
376PH/69 The HTML version of the specification is now built in a directory called
377 spec_html instead of spec.html, because the latter looks like a path with
378 a MIME-type, and this confuses some software.
379
380PH/70 Catch two compiler warnings in sieve.c.
381
d515a917
PH
382PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
383 function verify_get_ident() calls ip_connect() to connect a socket, but
384 if the "connect()" function timed out, ip_connect() used to close the
385 socket. However, verify_get_ident() also closes the socket later, and in
386 between Exim writes to the log, which may get opened at this point. When
387 the socket was closed in ip_connect(), the log could get the same file
388 descriptor number as the socket. This naturally causes chaos. The fix is
389 not to close the socket in ip_connect(); the socket should be closed by
390 the function that creates it. There was only one place in the code where
391 this was missing, in the iplookup router, which I don't think anybody now
392 uses, but I've fixed it anyway.
393
9b8fadde
PH
394PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
395 well as to direct DNS lookups. Otherwise the handling of names in host
396 lists is inconsistent and therefore confusing.
397
214e2000 398
5de37277
PH
399Exim version 4.60
400-----------------
401
cc38ddbf
PH
402PH/01 Two changes to the default runtime configuration:
403
404 (1) Move the checks for relay_from_hosts and authenticated clients from
405 after to before the (commented out) DNS black list checks.
406
407 (2) Add control=submission to the relay_from_hosts and authenticated
408 clients checks, on the grounds that messages accepted by these
409 statements are most likely to be submissions.
5de37277 410
72fdd6ae
PH
411PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
412
413 (1) Generate an error if the third argument for the ${prvs expansion is
414 not a single digit.
415
416 (2) Treat a missing third argument of ${prvscheck as if it were an empty
417 string.
418
419 (3) Reset the variables that are obtained from the first argument of
420 ${prvscheck and used in the second argument before leaving the code,
421 because their memory is reclaimed, so using them afterwards may do
422 silly things.
423
424 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
425 one (it's much easier than Tom thought :-).
426
427 (5) Because of (4), we can now allow for the use of $prvscheck_result
428 inside the third argument.
cb9328de 429
cb741023
PH
430PH/03 For some reason, the default setting of PATH when running a command from
431 a pipe transport was just "/usr/bin". I have changed it to
432 "/bin:/usr/bin".
433
f174f16e
PH
434PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
435 anything to be listed in the output from -bV.
b2f5a032 436
c25242d7
PH
437PH/05 When a filter generated an autoreply, the entire To: header line was
438 quoted in the delivery log line, like this:
439
440 => >A.N.Other <ano@some.domain> <original@ddress> ...
441
442 This has been changed so that it extracts the operative address. There
443 may be more than one such address. If so, they are comma-separated, like
444 this:
445
446 => >ano@some.domain,ona@other.domain <original@ddress> ...
447
82c19f95
PH
448PH/06 When a client host used a correct literal IP address in a HELO or EHLO
449 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
450 not being looked up in the rDNS to get a host name, Exim was showing the
451 IP address twice in Received: lines, even though the IP addresses were
452 identical. For example:
453
454 Received: from [1.2.3.4] (helo=[1.2.3.4])
455
456 However, if the real host name was known, it was omitting the HELO data
457 if it matched the actual IP address. This has been tidied up so that it
458 doesn't show the same IP address twice.
459
d7ffbc12
PH
460PH/07 When both +timestamp and +memory debugging was on, the value given by
461 $tod_xxx expansions could be wrong, because the tod_stamp() function was
462 called by the debug printing, thereby overwriting the timestamp buffer.
463 Debugging no longer uses the tod_stamp() function when +timestamp is set.
464
9f526266
PH
465PH/08 When the original message was included in an autoreply transport, it
466 always said "this is a copy of the message, including all the headers",
467 even if body_only or headers_only was set. It now gives an appropriate
468 message.
469
87fcc8b9
PH
470PH/09 Applied a patch from the Sieve maintainer which:
471
472 o fixes some comments
473 o adds the (disabled) notify extension core
474 o adds some debug output for the result of if/elsif tests
475 o points to the current vacation draft in the documentation
476 and documents the missing references header update
477
478 and most important:
479
480 o fixes a bug in processing the envelope test (when testing
481 multiple envelope elements, the last element determinted the
482 result)
483
456682f5
PH
484PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
485 Electronic Mail") by including:
486
487 Auto-submitted: auto-generated
488
489 in the messages that it generates (bounce messages and others, such as
490 warnings). In the case of bounce messages for non-SMTP mesages, there was
491 also a typo: it was using "Auto_submitted" (underscore instead of
492 hyphen). Since every message generated by Exim is necessarily in response
493 to another message, thes have all been changed to:
494
495 Auto-Submitted: auto-replied
496
497 in accordance with these statements in the RFC:
498
499 The auto-replied keyword:
500
501 - SHOULD be used on messages sent in direct response to another
502 message by an automatic process,
503
504 - MUST NOT be used on manually-generated messages,
505
506 - MAY be used on Delivery Status Notifications (DSNs) and Message
507 Disposition Notifications (MDNs),
508
509 - MUST NOT be used on messages generated by automatic or periodic
510 processes, except for messages which are automatic responses to
511 other messages.
512
3e46c1aa
PH
513PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
514 to the default Received: header definition.
456682f5 515
49826d12
PH
516PH/12 Added log selector acl_warn_skipped (default on).
517
eba0c039
PH
518PH/13 After a successful wildlsearch lookup, discard the values of numeric
519 variables because (a) they are in the wrong storage pool and (b) even if
520 they were copied, it wouldn't work properly because of the caching.
521
a0d6ba8a
PH
522PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
523 checking when decoding. Apparently there are clients that generate
524 overlong encoded strings. Why am I not surprised?
525
f0917727
PH
526PH/15 If the first argument of "${if match_address" was not empty, but did not
527 contain an "@" character, Exim crashed. Now it writes a panic log message
528 and treats the condition as false.
529
096fee00
PH
530PH/16 In autoreply, treat an empty string for "once" the same as unset.
531
024bd3c2
PH
532PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
533 extension "envelope-auth". The code is finished and in agreement with
534 other implementations, but there is no documentation so far and in fact,
535 nobody wrote the draft yet. This extension is currently #undef'ed, thus
536 not changing the active code.
537
538 Print executed "if" and "elsif" statements when debugging is used. This
539 helps a great deal to understand what a filter does.
540
541 Document more things not specified clearly in RFC3028. I had all this
542 sorted out, when out of a sudden new issues came to my mind. Oops."
543
df199fec
PH
544PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
545 (Bugzilla #53).
546
d27f1df3
PH
547PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
548 canonical form (as documented). However, after a host name lookup from
549 the IP address, check_host() was doing a simple string comparison with
550 addresses acquired from the DNS when checking that the found name did
551 have the original IP as one of its addresses. Since any found IPv6
552 addresses are likely to be in abbreviated form, the comparison could
553 fail. Luckily, there already exists a function for doing the comparison
554 by converting both addresses to binary, so now that is used instead of
555 the text comparison.
556
96776534
PH
557PH/20 There was another similar case to PH/19, when a complete host name was
558 given in a host list; looking up its IP address could give an abbreviated
559 form, whereas the current host's name might or might not be abbreviated.
560 The same fix has been applied.
561
5de37277 562
9a799bc0
PH
563Exim version 4.54
564-----------------
565
566PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
567 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
568 It now does.
569
99a4b039
PH
570PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
571 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
572
573PH/03 Typo: missing ".o" in src/pcre/Makefile.
574
4b233853
PH
575PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
576 header line, restrict the check to what is listed in RFCs 2369 and 2929.
577 Also, for "Auto-Submitted", treat anything other than "no" as
578 non-personal, in accordance with RFC 3834. (Previously it treated
579 anything starting "auto-" as non-personal.)
580
8857ccfd
PH
581TF/01 The control=submission/name=... option had a problem with syntax
582 errors if the name included a slash character. The /name= option
583 now slurps the rest of the string, so it can include any characters
584 but it must come last in the list of options (after /sender_retain
585 or /domain=).
586
433a2980
PH
587PH/05 Some modifications to the interface to the fake nameserver for the new
588 testing suite.
589
3e46c1aa 590
9a799bc0 591
e3a311ba
TK
592Exim version 4.53
593-----------------
594
595TK/01 Added the "success_on_redirect" address verification option. See
596 NewStuff for rationale and an example.
597
13b685f9
PH
598PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
599
395ff96d
PH
600PH/02 Patch to exigrep to allow it to work on syslog lines.
601
5b68f6e4
PH
602PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
603 fread() to skip over the body file's header line, because in Cygwin the
604 header line is locked and is inaccessible.
605
1ab52c69
PH
606PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
607 co-exist for some time) to make it clear that it is the Exim ID that is
608 referenced, not the Message-ID: header line.
609
b07e6aa3
PH
610PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
611 string_format() function, because snprintf() does not exist on all
612 operating systems.
613
254e032f
PH
614PH/06 The use of forbid_filter_existstest now also locks out the use of the
615 ${stat: expansion item.
616
3af76a81
PH
617PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
618 protocol synchronization error", to keep the pedants happy.
619
2548ba04
PH
620PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
621 well as for IRIX systems, when gcc is being used. See the host.c source
622 file for comments.
623
b6c6011d
PH
624PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
625
cf39cf57
PH
626PH/10 Named domain lists were not working if used in a queue_smtp_domains
627 setting.
628
f1513293
PH
629PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
630 transport and to the smtp transport in LMTP mode.
631
727549a4
PH
632TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
633
af46795e
PH
634PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
635 run a filter in a subprocess. This could lead to confusion in subsequent
636 lookups in the parent process. There should also be a search_tidyup() at
637 the end of the subprocess.
638
d7b47fd0
PH
639PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
640 only if the host matched helo_try_verify_hosts, which caused the
641 verification to occur when the EHLO/HELO command was issued. The ACL just
642 tested the remembered result. Now, if a previous verification attempt has
643 not happened, "verify = helo" does it there and then.
644
ee744174
JJ
645JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
646
b582ab87
PH
647TK/03 Fix log output including CR from clamd.
648
41a13e0a
PH
649PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
650 exist provoked a memory error which could cause a segfault.
651
f625cc5a
PH
652PH/15 Installed PCRE 6.2
653
654PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
655
21f7af35
PH
656PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
657 of the problem. Specifically, suggested +O2 rather than +O1 for the
658 HP-UX compiler.
659
31480e42
PH
660PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
661
2d280592
PH
662PH/20 If a delivery was routed to a non-standard port by means of an SRV
663 record, the port was not correctly logged when the outgoing_port log
664 selector was set (it logged the transort's default port).
665
7cd1141b
PH
666PH/21 Added support for host-specific ports to manualroute, queryprogram,
667 fallback_hosts, and "hosts" in the smtp transport.
668
669PH/22 If the log selector "outgoing_port" is set, the port is now also given on
670 host errors such as "Connection refused".
671
750af86e
PH
672PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
673 authentication with radiusclient 0.4.9:
674
675 - Error returned from rc_read_config was caught wrongly
676 - Username/password not passed on to radius server due to wrong length.
677
678 The presumption is that some radiusclient API changes for 4.51/PH/17
679 were not taken care of correctly. The code is still untested by me (my
680 Linux distribution still has 0.3.2 of radiusclient), but it was
681 contributed by a Radius user.
682
683PH/24 When doing a callout, the value of $domain wasn't set correctly when
684 expanding the "port" option of the smtp transport.
685
4304270b
TK
686TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
687 while reading a MIME header. Thanks to Tom Hughes for a patch.
688
750af86e
PH
689PH/24 Include config.h inside local_scan.h so that configuration settings are
690 available.
691
64ffc24f
PH
692PH/25 Make $smtp_command_argument available after all SMTP commands. This means
693 that in an ACL for RCPT (for example), you can examine exactly what was
694 received.
695
5dd9625b
PH
696PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
697 commands, but it was not correctly comparing the address with the actual
698 client host address. Thus, it would show the EHLO address in Received:
699 header lines when this was not necessary.
700
5591031b
PH
701PH/27 Added the % operator to ${eval:}.
702
ba18e66a
PH
703PH/28 Exim tries to create and chdir to its spool directory when it starts;
704 it should be ignoring failures (because with -C, for example, it has lost
705 privilege). It wasn't ignoring creation failures other than "already
706 exists".
707
9cec981f
PH
708PH/29 Added "crypteq" to the list of supported features that Exim outputs when
709 -bV or -d is used.
710
aa2b5c79
PH
711PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
712 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
713 too many continuations, the temporary file was not being removed, and the
714 return code was incorrect.
aa2b5c79 715
48a53b7f
PH
716PH/31 Missing "BOOL" in function definition in filtertest.c.
717
1c59d63b
PH
718PH/32 Applied Sieve patches from the maintainer.
719
671012da
TK
720TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
721
1509d3a8
PH
722PH/33 Added "verify = not_blind".
723
724PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
725 Local/Makefile (with some defaults set). These are used in built scripts
726 such as exicyclog, but they have never been used in the exim_install
727 script (though there are many overriding facilities there). I have
728 arranged that the exim_install script now takes note of these two
729 settings.
730
731PH/35 Installed configuration files for Dragonfly.
732
2fe1a124
PH
733PH/36 When a locally submitted message by a trusted user did not contain a
734 From: header, and the sender address was obtained from -f or from an SMTP
735 MAIL command, and the trusted user did not use -F to supply a sender
736 name, $originator_name was incorrectly used when constructing a From:
737 header. Furthermore, $originator_name was used for submission mode
738 messages from external hosts without From: headers in a similar way,
739 which is clearly wrong.
740
8800895a
PH
741PH/37 Added control=suppress_local_fixups.
742
ccfdb010
PH
743PH/38 When log_selector = +received_sender was set, and the addition of the
744 sender made the log line's construction buffer exactly full, or one byte
745 less than full, an overflow happened when the terminating "\n" was
746 subsequently added.
747
1130bfb0
PH
748PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
749 when the result of a list match is failure because a DNS lookup failed.
750
ebcb507f
PH
751PH/40 RM_COMMAND is now used in the building process.
752
c35e155c
PH
753PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
754 the "build-* directories that it finds.
755
95d1f782
PH
756PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
757 address in a domain literal was a prefix of an interface address.
758
fd6de02e
PH
759PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
760 when verifying a sender address, unless rewrite_headers is false.
761
58de37c5
PH
762PH/44 Wrote a long comment about why errors_to addresses are verified as
763 recipients, not senders.
764
261cf466
TF
765TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
766 the ratelimit ACL was added.
767
3ee512ff
PH
768PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
769
e08c430f
PH
770PH/46 Added extra information about PostgreSQL errors to the error string.
771
bef5a11f
PH
772PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
773 avoiding the need to install special zones in a real server. This is
774 backwards compatible; if it can't find the fake resolver, it drops back.
775 Thus, both old and new test suites can be run.
776
7546de58
TF
777TF/02 Added util/ratelimit.pl
778
e5d5a95f
TF
779TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
780 clock is set back in time.
781
2e88a017
TF
782TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
783 Candler <B.Candler@pobox.com>.
784
a5f65aa4
TF
785TF/05 The fix for PH/43 was not completely correct; widen_domains is always
786 OK for addresses that are the result of redirections.
787
e7726cbf
PH
788PH/48 A number of further additions for the benefit of the new test suite,
789 including a fake gethostbyname() that interfaces to the fake DNS resolver
790 (see PH/47 above).
791
a7fdad5b
TF
792TF/06 The fix for widen_domains has also been applied to qualify_single and
793 search_parents which are the other dnslookup options that can cause
794 header rewrites.
795
6af56900
PH
796PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
797 type ("H").
798
0925ede6
PH
799PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
800
66afa403
TF
801TF/07 Exim produced the error message "an SRV record indicated no SMTP
802 service" if it encountered an MX record with an empty target hostname.
803 The message is now "an MX or SRV record indicated no SMTP service".
804
0154e85a
TF
805TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
806 if the DNS of the sending site is misconfigured. This is quite a
807 common situation. This change restores the behaviour of treating a
808 helo verification defer as a failure.
809
16f12c76
PH
810PH/51 If self=fail was set on a router, the bounce message did not include the
811 actual error message.
812
bbe902f0 813
e5a9dba6
PH
814Exim version 4.52
815-----------------
816
817TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
818
22c3b60b
PH
819PH/01 When a transport filter timed out in a pipe delivery, and the pipe
820 command itself ended in error, the underlying message about the transport
821 filter timeout was being overwritten with the pipe command error. Now the
822 underlying error message should be appended to the second error message.
823
06a9b4b5
PH
824TK/01 Fix poll() being unavailable on Mac OSX 10.2.
825
c1ac6996
PH
826PH/02 Reduce the amount of output that "make" produces by default. Full output
827 can still be requested.
828
9c7a242c
PH
829PH/03 The warning log line about a condition test deferring for a "warn" verb
830 was being output only once per connection, rather than after each
831 occurrence (because it was using the same function as for successful
832 "warn" verbs). This seems wrong, so I have changed it.
833
87ba3f5f
PH
834TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
835 it should not have, which might have caused a crash in the right
836 circumstances, but probably never did.
837
838PH/04 Installed a modified version of Tony Finch's patch to make submission
839 mode fix the return path as well as the Sender: header line, and to
840 add a /name= option so that you can make the user's friendly name appear
841 in the header line.
842
29aba418
TF
843TF/03 Added the control = fakedefer ACL modifier.
844
fe0dab11
TF
845TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
846 Mark Lowes for thorough testing.
870f6ba8 847
11d337a4
TK
848TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
849
850TK/03 Merged latest SRS patch from Miles Wilton.
851
415c8f3b
PH
852PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
853 with the definition in sysexits.h (which is #included earlier).
854 Fortunately, Exim does not actually use EX_OK. The code used to try to
855 preserve the sysexits.h value, by assumimg that macro definitions were
856 scanned for macro replacements. I have been disabused of this notion,
857 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 858
958541e9
PH
859PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
860 in the smtp transport. When a block could not be written in a single
861 write() function, the timeout was being re-applied to each part-write.
862 This seems wrong - if the receiver was accepting one byte at a time it
863 would take for ever. The timeout is now adjusted when this happens. It
864 doesn't have to be particularly precise.
865
c206415f
TK
866TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
867 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
868
2a4be8f9
PH
869PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
870 without a domain if the check to <postmaster@domain> fails.
871
1cba11c5
SC
872SC/01 Eximstats: added -xls and the ability to specify output files
873 (patch written by Frank Heydlauf).
874
875SC/02 Eximstats: use FileHandles for outputing results.
876
877SC/03 Eximstats: allow any combination of xls, txt, and html output.
878
879SC/04 Eximstats: fixed display of large numbers with -nvr option
880
881SC/05 Eximstats: fixed merging of reports with empty tables.
882
883SC/06 Eximstats: added the -include_original_destination flag
884
885SC/07 Eximstats: removed tabs and trailing whitespace.
886
1005d00e
TK
887TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
888
889TK/06 MBOX spool code: Add real "From " MBOX separator line
890 so the .eml file is really in mbox format (even though
891 most programs do not really care). Patch from Alex Miller.
892
893TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
894 The latter is generated from $received_to and is only set if the
895 message has one envelope recipient. SA can use these headers,
896 obviously out-of-the-box. Patch from Alex Miller.
897
9b4768fa
PH
898PH/08 The ${def test on a variable was returning false if the variable's
899 value was "0", contrary to what the specification has always said!
900 The result should be true unless the variable is empty.
901
902PH/09 The syntax error of a character other than { following "${if
903 def:variable_name" (after optional whitespace) was not being diagnosed.
904 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
905 accidental colon was present, for example, could give incorrect results.
906
0d7eb84a
PH
907PH/10 Tidied the code in a number of places where the st_size field of a stat()
908 result is used (not including appendfile, where other changes are about
909 to be made).
910
911PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
912 This involved changing a lot of size variables from int to off_t. It
913 should work with maildirs and everything.
914
40727bee
TK
915TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
916 spamd dying while we are connected to it.
917
554d2369
TF
918TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
919 <jgh@wizmail.org>
920
1f922db1
PH
921PH/12 Applied Alex Kiernan's patch for the API change for the error callback
922 function for BDB 4.3.
923
ef213c3b
PH
924PH/13 Changed auto_thaw such that it does not apply to bounce messages.
925
8ac170f3
PH
926PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
927 the sources for PCRE have been re-arranged and more files are now
928 involved.
929
b1c749bb
PH
930PH/15 The code I had for printing potentially long long variables in PH/11
931 above was not the best (it lost precision). The length of off_t variables
932 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
933 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
934 to be "long long int" or "long int". This is needed for the internal
935 formatting function string_vformat().
b1c749bb 936
4aac9b49
PH
937PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
938 the configuration file to be ":syslog", then the script "guesses" where
939 the logs files are, rather than using the compiled in default. In our
940 case the guess is not the same as the compiled default, so the script
941 suddenly stopped working when I started to use syslog. The patch checks
942 to see if log_file_path is "". If so, it attempts to read it from exim
943 with no configuration file to get the compiled in version, before it
944 falls back to the previous guessing code."
945
294520c8
TK
946TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
947 implementing BATV in an Exim configuration. See NewStuff for the gory
948 details.
949
5bd022fe
PH
950PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
951 Makefile that are specific to HP-UX.
952
90e9ce59
PH
953PH/18 If the "use_postmaster" option was set for a recipient callout together
954 with the "random" option, the postmaster address was used as the MAIL
955 FROM address for the random test, but not for the subsequent recipient
956 test. It is now used for both.
957
5ea81592
PH
958PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
959 patch removes a few documentation additions to RFC 3028, because the
960 latest draft now contains them. It adds the new en;ascii-case comparator
961 and a new error check for 8bit text in MIME parts. Comparator and
962 require names are now matched exactly. I enabled the subaddress
963 extension, but it is not well tested yet (read: it works for me)."
964
c6c2dc1d
PH
965PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
966 rework some of the code of TK/09 above to avoid the hardwired use of
967 "%lld" and "long long". Replaced the call to snprintf() with a call to
968 string_vformat().
969
fffffe4c
PH
970PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
971 records point to non-existent hosts", "retry timeout exceeded", and
972 "retry time not reached for any host after a long failure period".
ca02eafb 973
9a26b6b2
PH
974PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
975 experimental DomainKeys support:
976
977 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
978 (2) On an error such as an illegally used "control", the wrong name for
979 the control was given.
980
981 These problems did NOT occur unless DomainKeys support was compiled.
982
4aee0225
PH
983PH/23 Added daemon_startup_retries and daemon_startup_sleep.
984
32d668a5
PH
985PH/24 Added ${if match_ip condition.
986
8187c3f3
PH
987PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
988 databases so that it will be absolutely obvious if a crash occurs in the
989 DB library. This is a regular occurrence (often caused by mis-matched
990 db.h files).
991
ff790e47 992PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
993 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
994 picked up on a user's system that detects such things. There doesn't seem
995 to be a gcc warning option for this - only an attribute that has to be
996 put on the function's prototype. It seems that in Fedora Core 4 they have
997 set this on a number of new functions. No doubt there will be more in due
998 course.
ff790e47 999
5417f6d1
PH
1000PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1001 specify a transport. However, if an address that was verified by such a
1002 router was the subject of a callout, Exim crashed because it tried to
1003 read the rcpt_include_affixes from the non-existent transport. Now it
1004 just assumes that the setting of that option is false. This bug was
1005 introduced by 4.51/PH/31.
1006
59cf8544
PH
1007PH/28 Changed -d+all to exclude +memory, because that information is very
1008 rarely of interest, but it makes the output a lot bigger. People tend to
1009 do -d+all out of habit.
1010
e7ad8a65
PH
1011PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1012 code in os-type was giving problems when libc.so lives in lib64, like on
1013 x86_64 Fedora Core.
1014
ade42478
PH
1015PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1016 aren't the modern standard, and it seems that some systems' include files
1017 don't always have them. Exim was already checking for some of the newer
1018 ones like T_AAAA, and defining it itself. I've added checks for all the
1019 record types that Exim uses.
1020
182ad5cf
PH
1021PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1022 not automatically generating a new one, as it is supposed to. This
1023 prevented TLS from working. If the file did exist, but contained invalid
1024 data, a new version was generated, as expected. It was only the case of a
1025 non-existent file that was broken.
1026
b0d9fc80
TK
1027TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1028 with a change in libdomainkeys > 0.64.
1029
1030TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1031 from DNS. If the selector record carries the flag, it now has
1032 precedence over the domain-wide flag.
1033
1034TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1035
47c7a64a
PH
1036PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1037 the use of a port name that isn't defined in /etc/services) occurred, the
1038 message was deferred as in a normal delivery, and thus remained on the
1039 spool, instead of being failed because of the mua_wrapper setting. This
1040 is now fixed, and I tidied up some of the mua_wrapper messages at the
1041 same time.
1042
a388bce4
SC
1043SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1044 the messages in a hash of arrays rather than using individual hashes.
1045 This is a bit cleaner and results in dramatic memory savings, albeit
1046 at a slight CPU cost.
1047
1048SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1049 as requested by Marc Sherman.
1050
1051SC/10 Eximstats: added histograms for user specified patterns as requested
1052 by Marc Sherman.
1053
0793e4ed
SC
1054SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1055
c58b88df
PH
1056PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1057 fopen() in the content-scanning modules that did not already have it.
1058
e7ad8a65 1059
7982096b
PH
1060Exim version 4.51
1061-----------------
1062
1a46a8c5
PH
1063TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1064 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1065
2f079f46 1066TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1067
1068TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1069
1070PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1071 to test Sieve filters that use "vacation".
1072
1073PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1074 that changes the way the GnuTLS parameters are stored in the cache file.
1075 The new format can be generated externally. For backward compatibility,
1076 if the data in the cache doesn't make sense, Exim assumes it has read an
1077 old-format file, and it generates new data and writes a new file. This
1078 means that you can't go back to an older release without removing the
1079 file.
1080
1081PH/03 A redirect router that has both "unseen" and "one_time" set does not
1082 work if there are any delivery delays because "one_time" forces the
1083 parent to be marked "delivered", so its unseen clone is never tried
1084 again. For this reason, Exim now forbids the simultaneous setting of
1085 these two options.
1086
1087PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1088 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1089 entry if you want to know the details. The fix, however, neglected to
1090 consider the case when local delivery batching is involved. The test for
1091 "previously delivered" was not happening when checking to see if an
1092 address could be batched with a previous (undelivered) one; under
1093 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1094 address.
1a46a8c5
PH
1095
1096PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1097 in its include files, and this causes problems building Exim.
1098
1099PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1100 header_syntax) but Exim was just ignoring anything given after a slash.
1101 In particular, this caused confusion with an attempt to use "verify =
1102 reverse_host_lookup/defer_ok". An error is now given when options are
1103 supplied for verify items that do not have them. (Maybe reverse_host_
1104 lookup should have a defer_ok option, but that's a different point.)
1105
1106PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1107 defined by RFC 821) to 2048, because there were problems with some AUTH
1108 commands, and RFC 1869 says the size should be increased for extended
1109 SMTP commands that take arguments.
1110
1111PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1112 Finch).
1113
1114PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1115 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1116
49c2d5ea
PH
1117PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1118 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1119 whatever). Otherwise the password may appear in the log. Following change
1120 PH/42 below, there is no longer a chance of it appearing in a bounce
1121 message.
49c2d5ea 1122
bf759a8b
PH
1123PH/11 Installed exipick version 20050225.0 from John Jetmore.
1124
83364d30
PH
1125PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1126 of its addresses was ever tried. (Bugzilla bug #2.)
1127
7999bbd7
PH
1128PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1129 the result incorrectly in the debug output. (It correctly added a newline
1130 to what was transported.)
1131
7dbf77c9
PH
1132TF/01 Added $received_time.
1133
74e0617f
PH
1134PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1135 commented out examples of how to interface to a virus scanner and to
1136 SpamAssassin. Also added commented examples of av_scanner and
1137 spamd_address settings.
1138
2f079f46
PH
1139PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1140 and controls are allowed in which ACLs. There were a couple of minor
1141 errors. Some of the entries in the conditions table (which is a table of
1142 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1143 negation of where the condition IS allowed.
1144
8c841523
PH
1145PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1146
7766a4f0
PH
1147PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1148 header file does not have a version number, so I've had to invent a new
1149 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1150 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1151 radiusclient), but it was contributed by a Radius user.
1152
8b417f2c
PH
1153PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1154 files or directories, for OpenSSL.
1155
901f42cb
PH
1156PH/19 When an Exim process that is running as root has to create an Exim log
1157 file, it does so in a subprocess that runs as exim:exim so as to get the
1158 ownership right at creation (otherwise, other Exim processes might see
1159 the file with the wrong ownership). There was no test for failure of this
1160 fork() call, which would lead to the process getting stuck as it waited
1161 for a non-existent subprocess. Forks do occasionally fail when resources
1162 run out. I reviewed all the other calls to fork(); they all seem to check
1163 for failure.
1164
f9b9210e
PH
1165PH/20 When checking for unexpected SMTP input at connect time (before writing
1166 the banner), Exim was not dealing correctly with a non-positive return
1167 from the read() function. If the client had disconnected by this time,
1168 the result was a log entry for a synchronization error with an empty
1169 string after "input=" when read() returned zero. If read() returned -1
1170 (an event I could not check), uninitialized data bytes were printed.
1171 There were reports of junk text (parts of files, etc) appearing after
1172 "input=".
1173
54cdb463
PH
1174PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1175
cf00dad6
PH
1176PH/22 Added support for macro redefinition, and (re)definition in between
1177 driver and ACL definitions.
1178
acb1b346
PH
1179PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1180 forgetting to use the resulting value; it was using the unexpanded value.
1181
c5ddb310
PH
1182PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1183 hadn't been configured. The fix is from Juergen Kreileder, who
1184 understands it better than I do:
1185
1186 "Here's what I see happening with three configured cyrus_sasl
1187 authenticators configured (plain, login, cram-md5):
1188
1189 On startup auth_cyrus_sasl_init() gets called for each of these.
1190 This means three calls to sasl_listmech() without a specified mech_list.
1191 => SASL tests which mechs of all available mechs actually work
1192 => three warnings about OTP not working
1193 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1194
1195 With the patch, sasl_listmech() also gets called three times. But now
1196 SASL's mech_list option is set to the server_mech specified in the the
1197 authenticator. Or in other words, the answer from sasl_listmech()
1198 gets limited to just the mech you're testing for (which is different
1199 for each call.)
1200 => the return list contains just 'plain' or 'login', 'cram-md5' or
1201 nothing depending on the value of ob->server_mech.
1202
1203 I've just tested the patch: Authentication still works fine,
1204 unavailable mechs specified in the exim configuration are still
1205 caught, and the auth.log warnings about OTP are gone."
1206
31619da6
PH
1207PH/25 When debugging is enabled, the contents of the command line are added
1208 to the debugging output, even when log_selector=+arguments is not
1209 specified.
1210
bebaf0fc
PH
1211PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1212 answer is "GNU", and only if the return is "GNU/something" is the answer
1213 "Linux".
1214
475fe28a
PH
1215PH/27 $acl_verify_message is now set immediately after the failure of a
1216 verification in an ACL, and so is available in subsequent modifiers. In
1217 particular, the message can be preserved by coding like this:
1218
1219 warn !verify = sender
1220 set acl_m0 = $acl_verify_message
1221
1222 Previously, $acl_verify_message was set only while expanding "message"
1223 and "log_message" when a very denied access.
1224
7e8bec7a
PH
1225PH/28 Modified OS/os.c-Linux with
1226
1227 -#ifndef OS_LOAD_AVERAGE
1228 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1229
1230 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1231 nomenclature these days.)
1232
e4a89c47
PH
1233PH/29 Installed patch from the Sieve maintainer that adds the options
1234 sieve_useraddress and sieve_subaddress to the redirect router.
1235
5ca2a9a1
PH
1236PH/30 In these circumstances:
1237 . Two addresses routed to the same list of hosts;
1238 . First host does not offer TLS;
1239 . First host accepts first address;
1240 . First host gives temporary error to second address;
1241 . Second host offers TLS and a TLS session is established;
1242 . Second host accepts second address.
1243 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1244 and peerdn, if requested) that were in fact used only for the second
1245 address.
7e8bec7a 1246
c688b954
PH
1247PH/31 When doing a callout as part of verifying an address, Exim was not paying
1248 attention to any local part prefix or suffix that was matched by the
1249 router that accepted the address. It now behaves in the same way as it
1250 does for delivery: the affixes are removed from the local part unless
1251 rcpt_include_affixes is set on the transport.
1252
fed77020
PH
1253PH/32 Add the sender address, as F=<...>, to the log line when logging a
1254 timeout during the DATA phase of an incoming message.
1255
7fe1560f
PH
1256PH/33 Sieve envelope tests were broken for match types other than :is. I have
1257 applied a patch sanctioned by the Sieve maintainer.
c688b954 1258
ebb6e6d5
PH
1259PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1260 the uid or gid is negative. A case of a negative gid caused this to be
1261 noticed. The fix allows for either to be negative.
1262
9c4e8f60
PH
1263PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1264 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1265 overlooked.
1266
1267PH/36 The change PH/12 above was broken. Fixed it.
1268
d7174846
PH
1269PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1270 the grounds that routing the same address twice would always produce the
1271 same answer. This might have been true once, but it is certainly no
1272 longer true now. Routing a child address may depend on the previous
1273 routing that produced that child. Some complicated redirection strategies
1274 went wrong when messages had multiple recipients, and made Exim's
1275 behaviour dependent on the order in which the addresses were given.
1276
1277 I have moved the duplicate checking until after the routing is complete.
1278 Exim scans the addresses that are assigned to local and remote
1279 transports, and removes any duplicates. This means that more work will be
1280 done, as duplicates will always all be routed, but duplicates are
1281 presumably rare, so I don't expect this is of any significance.
1282
1283 For deliveries to pipes, files, and autoreplies, the duplicate checking
1284 still happens during the routing process, since they are not going to be
1285 routed further.
1286
cfe75fc3
PH
1287PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1288 It corrects a timeout issue with spamd. This is Ian's comment: "The
1289 background is that sometimes spamd either never reads data from a
1290 connection it has accepted, or it never writes response data. The exiscan
1291 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1292 blindly assumes that writes won't block so it may never time out."
1293
be22d70e
PH
1294PH/39 Allow G after quota size as well as K and M.
1295
0612b098
PH
1296PH/40 The value set for $authenticated_id in an authenticator may not contain
1297 binary zeroes or newlines because the value is written to log lines and
1298 to spool files. There was no check on this. Now the value is run through
1299 the string_printing() function so that such characters are converted to
1300 printable escape sequences.
1301
2e0c1448
PH
1302PH/41 $message_linecount is a new variable that contains the total number of
1303 lines in the message. Compare $body_linecount, which is the count for the
1304 body only.
1305
447d236c
PH
1306PH/42 Exim no longer gives details of delivery errors for specific addresses in
1307 bounce and delay warning messages, except in certain special cases, which
1308 are as follows:
1309
1310 (a) An SMTP error message from a remote host;
1311 (b) A message specified in a :fail: redirection;
1312 (c) A message specified in a "fail" command in a system filter;
1313 (d) A message specified in a FAIL return from the queryprogram router;
1314 (e) A message specified by the cannot_route_message router option.
1315
1316 In these cases only, Exim does include the error details in bounce and
1317 warning messages. There are also a few cases where bland messages such
1318 as "unrouteable address" or "local delivery error" are given.
1319
d20976dc
PH
1320PH/43 $value is now also set for the "else" part of a ${run expansion.
1321
f656d135
PH
1322PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1323 being worked on, but at least Exim now implements the latest version to
1324 play with."
1325
2e2a30b4
PH
1326PH/45 In a pipe transport, although a timeout while waiting for the pipe
1327 process to complete was treated as a delivery failure, a timeout while
1328 writing the message to the pipe was logged, but erroneously treated as a
1329 successful delivery. Such timeouts include transport filter timeouts. For
1330 consistency with the overall process timeout, these timeouts are now
1331 treated as errors, giving rise to delivery failures by default. However,
1332 there is now a new Boolean option for the pipe transport called
1333 timeout_defer, which, if set TRUE, converts the failures into defers for
1334 both kinds of timeout. A transport filter timeout is now identified in
1335 the log output.
1336
9176e9f0
PH
1337PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1338 systems where "make" and "gmake" are different, calling "gmake" at top
1339 level broke things. I've arranged for the value of $(MAKE) to be passed
1340 from the Makefile to this script so that it can call the same version of
1341 "make".
1342
7982096b 1343
bbe902f0
PH
1344A note about Exim versions 4.44 and 4.50
1345----------------------------------------
1346
1347Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1348changes of various kinds. As a consequence, a big documentation update was
1349needed. This delayed the release for rather longer than seemed good, especially
1350in the light of a couple of (minor) security issues. Therefore, the changes
1351that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1352release. So 4.44 and 4.50 are in effect two different branches that both start
1353from 4.43.
1354
1355I have left the 4.50 change log unchanged; it contains all the changes since
13564.43. The change log for 4.44 is below; many of its items are identical to
1357those for 4.50. This seems to be the most sensible way to preserve the
1358historical information.
1359
1360
f7b63901 1361Exim version 4.50
495ae4b0
PH
1362-----------------
1363
5fe762f6
PH
1364 1. Minor wording change to the doc/README.SIEVE file.
1365
139059f6 1366 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1367 computation of the current number of files was incorrect.
495ae4b0 1368
7086e875
PH
1369 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1370 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1371 place.
1372
35af9f61
PH
1373 4. Give more explanation in the error message when the command for a transport
1374 filter fails to execute.
1375
b668c215
PH
1376 5. There are several places where Exim runs a non-Exim command in a
1377 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1378 was being done only for the command run by the queryprogram router. It is
1379 now done for all such subprocesses. The other cases are: ${run, transport
1380 filters, and the commands run by the lmtp and pipe transports.
1381
a494b1e1
PH
1382 6. Added CONFIGURE_GROUP build-time option.
1383
1384 7. Some older OS have a limit of 256 on the maximum number of file
1385 descriptors. Exim was using setrlimit() to set 1000 as a large value
1386 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1387 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1388
c5fcb476
PH
1389 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1390 was an oversight, and furthermore, ever since the addition of extra
1391 controls (e.g. 4.43/32), the checks on when to allow different forms of
1392 "control" were broken. There should now be diagnostics for all cases when a
1393 control that does not make sense is encountered.
1394
69358f02
PH
1395 9. Added the /retain_sender option to "control=submission".
1396
5be20824
PH
139710. $recipients is now available in the predata ACL (oversight).
1398
eb2c0248
PH
139911. Tidy the search cache before the fork to do a delivery from a message
1400 received from the command line. Otherwise the child will trigger a lookup
1401 failure and thereby defer the delivery if it tries to use (for example) a
1402 cached ldap connection that the parent has called unbind on.
1403
2a3eea10
PH
140412. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1405 of $address_data from the recipient verification was clobbered by the
1406 sender verification.
1407
140813. The value of address_data from a sender verification is now available in
1409 $sender_address_data in subsequent conditions in the ACL statement.
1410
23c7ff99
PH
141114. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1412
4deaf07d
PH
141315. Added a new option "connect=<time>" to callout options, to set a different
1414 connection timeout.
1415
926e1192
PH
141616. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1417 was its contents. (It was OK if the option was not defined at all.)
1418
650edc6f
PH
141917. A "Completed" log line is now written for messages that are removed from
1420 the spool by the -Mrm option.
1421
2c7db3f5
PH
142218. New variables $sender_verify_failure and $recipient_verify_failure contain
1423 information about exactly what failed.
1424
3d235903
PH
142519. Added -dd to debug only the daemon process.
1426
7c7ad977
PH
142720. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1428 handles timeouts, both on the server side and network timeouts. Renamed the
1429 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1430
981756db
PH
143121. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1432 It is now set to "smtps".
1433
d4eb88df
PH
143422. $host_address is now set to the target address during the checking of
1435 ignore_target_hosts.
1436
143723. When checking ignore_target_hosts for an ipliteral router, no host name was
1438 being passed; this would have caused $sender_host_name to have been used if
1439 matching the list had actually called for a host name (not very likely,
1440 since this list is usually IP addresses). A host name is now passed as
1441 "[x.x.x.x]".
1442
7d468ab8
PH
144324. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1444 code that specifies a non-restarting handler (typically sigaction() in
1445 modern systems) in an attempt to fix a rare and obscure crash bug.
1446
144725. Narrowed the window for a race in the daemon that could cause it to ignore
1448 SIGCHLD signals. This is not a major problem, because they are used only to
1449 wake it up if nothing else does.
1450
62c0818f
PH
145126. A malformed maildirsize file could cause Exim to calculate negative values
1452 for the mailbox size or file count. Odd effects could occur as a result.
1453 The maildirsize information is now recalculated if the size or filecount
1454 end up negative.
1455
26034054
PH
145627. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1457 support for a long time. Removed HAVE_SYS_VFS_H.
1458
af66f652
PH
145928. Installed the latest version of exipick from John Jetmore.
1460
90af77f4
PH
146129. In an address list, if the pattern was not a regular expression, an empty
1462 subject address (from a bounce message) matched only if the pattern was an
1463 empty string. Non-empty patterns were not even tested. This was the wrong
1464 because it is perfectly reasonable to use an empty address as part of a
1465 database query. An empty address is now tested by patterns that are
1466 lookups. However, all the other forms of pattern expect the subject to
1467 contain a local part and a domain, and therefore, for them, an empty
1468 address still always fails if the pattern is not itself empty.
1469
d8ef3577
PH
147030. Exim went into a mad DNS loop when attempting to do a callout where the
1471 host was specified on an smtp transport, and looking it up yielded more
1472 than one IP address.
1473
5cb8cbc6
PH
147431. Re-factored the code for checking spool and log partition space into a
1475 function that finds that data and another that does the check. The former
1476 is then used to implement four new variables: $spool_space, $log_space,
1477 $spool_inodes, and $log_inodes.
1478
14702f5b
PH
147932. The RFC2047 encoding function was originally intended for short strings
1480 such as real names; it was not keeping to the 75-character limit for
1481 encoded words that the RFC imposes. It now respects the limit, and
1482 generates multiple encoded words if necessary. To be on the safe side, I
1483 have increased the buffer size for the ${rfc2047: expansion operator from
1484 1024 to 2048 bytes.
1485
063b1e99
PH
148633. It is now permitted to omit both strings after an "if" condition; if the
1487 condition is true, the result is "true". As before, when the second string
1488 is omitted, a false condition yields an empty string. This makes it less
1489 cumbersome to write custom ACL and router conditions.
1490
652e1b65
PH
149134. Failure to deliver a bounce message always caused it to be frozen, even if
1492 there was an errors_to setting on the router. The errors_to setting is now
1493 respected.
1494
6f0c9a4f
PH
149535. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1496 canonical form (fully expanded) before being placed in
1497 $sender_host_address.
1498
33397d19
PH
149936. The table in the code that translates DNS record types into text (T_A to
1500 "A" for instance) was missing entries for NS and CNAME. It is just possible
1501 that this could have caused confusion if both these types were looked up
1502 for the same domain, because the text type is used as part of Exim's
1503 per-process caching. But the chance of anyone hitting this buglet seems
1504 very small.
1505
7bb56e1f
PH
150637. The dnsdb lookup has been extended in a number of ways.
1507
1508 (1) There is a new type, "zns", which walks up the domain tree until it
1509 finds some nameserver records. It should be used with care.
1510
ea3bc19b
PH
1511 (2) There is a new type, "mxh", which is like "mx" except that it returns
1512 just the host names, not the priorities.
1513
1514 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1515 looked up. The behaviour when one of the lookups defers can be
1516 controlled by a keyword.
7bb56e1f 1517
ea3bc19b 1518 (4) It is now possible to specify the separator character for use when
7bb56e1f 1519 multiple records are returned.
33397d19 1520
0bcb2a0e
PH
152138. The dnslists ACL condition has been extended: it is now possible to supply
1522 a list of IP addresses and/or domains to be looked up in a particular DNS
1523 domain.
1524
2ac0e484
PH
152539. Added log_selector=+queue_time_overall.
1526
4e1fde53
PH
152740. When running the queue in the test harness, wait just a tad after forking a
1528 delivery process, to get repeatability of debugging output.
1529
de365ded
PH
153041. Include certificate and key file names in error message when GnuTLS fails
1531 to set them up, because the GnuTLS error message doesn't include the name
1532 of the failing file when there is a problem reading it.
1533
f05da2e8
PH
153442. Allow both -bf and -bF in the same test run.
1535
d6453af2
PH
153643. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1537
f7b63901
PH
153844. The "Exiscan patch" is now merged into the mainline Exim source.
1539
154045. Sometimes the final signoff response after QUIT could fail to get
1541 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1542 < 0 before doing a fflush(). This bug looks as though it goes back to the
1543 introduction of TLS in release 3.20, but "sometimes" must have been rare
1544 because the tests only now provoked it.
1545
a444213a
PH
154646. Reset the locale to "C" after calling embedded Perl, in case it was changed
1547 (this can affect the format of dates).
1548
0ec020ea
PH
154947. exim_tidydb, when checking for the continued existence of a message for
1550 which it has found a message-specific retry record, was not finding
1551 messages that were in split spool directories. Consequently, it was
1552 deleting retry records that should have stayed in existence.
1553
b1206957
PH
155448. Steve fixed some bugs in eximstats.
1555
155649. The SPA authentication driver was not abandoning authentication and moving
1557 on to the next authenticator when an expansion was forced to fail,
1558 contradicting the general specification for all authenticators. Instead it
1559 was generating a temporary error. It now behaves as specified.
1560
26dd5a95
PH
156150. The default ordering of permitted cipher suites for GnuTLS was pessimal
1562 (the order specifies the preference for clients). The order is now AES256,
1563 AES128, 3DES, ARCFOUR128.
1564
343b2385
PH
156551. Small patch to Sieve code - explicitly set From: when generating an
1566 autoreply.
1567
1c5466b9
PH
156852. Exim crashed if a remote delivery caused a very long error message to be
1569 recorded - for instance if somebody sent an entire SpamAssassin report back
1570 as a large number of 550 error lines. This bug was coincidentally fixed by
1571 increasing the size of one of Exim's internal buffers (big_buffer) that
1572 happened as part of the Exiscan merge. However, to be on the safe side, I
1573 have made the code more robust (and fixed the comments that describe what
1574 is going on).
1575
55ee9ee3
PH
157653. Now that there can be additional text after "Completed" in log lines (if
1577 the queue_time_overall log selector is set), a one-byte patch to exigrep
1578 was needed to allow it to recognize "Completed" as not the last thing in
1579 the line.
1580
d38f8232
PH
158154. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1582 patch that reportedly fixes this has been added. I am not expert enough to
1583 create a test for it. This is what the patch creator wrote:
1584
1585 "I found a little strange behaviour of ldap code when working with
1586 Windows 2003 AD Domain, where users was placed in more than one
1587 Organization Units. When I tried to give exim partial DN, the exit code
1588 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1589 But simultaneously result of request was absolutely normal ldap result,
1590 so I produce this patch..."
1591
3295e65b
PH
1592 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1593 REFERENCE, so I have modified the code to exclude the patch when that macro
1594 is not defined.
1595
7102e136
PH
159655. Some experimental protocols are using DNS PTR records for new purposes. The
1597 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1598 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1599 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1600 CAN-2005-0021
7102e136 1601
3ca0ba97
PH
160256. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1603
c2bcbe20
PH
160457. Double the size of the debug message buffer (to 2048) so that more of very
1605 long debug lines gets shown.
1606
18ce445d
PH
160758. The exicyclog utility now does better if the number of log files to keep
1608 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
1609
1f5b4c3d
PH
161059. Two changes related to the smtp_active_hostname option:
1611
1612 (1) $smtp_active_hostname is now available as a variable.
1613 (2) The default for smtp_banner uses $smtp_active_hostname instead
1614 of $primary_hostname.
1615
b975ba52
PH
161660. The host_aton() function is supposed to be passed a string that is known
1617 to be a valid IP address. However, in the case of IPv6 addresses, it was
1618 not checking this. This is a hostage to fortune. Exim now panics and dies
1619 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
1620 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1621 components; fortuitously, this particular loophole had already been fixed
1622 by change 4.50/55 above.
1623
1624 If there are any other similar loopholes, the new check in host_aton()
1625 itself should stop them being exploited. The report I received stated that
1626 data on the command line could provoke the exploit when Exim was running as
1627 exim, but did not say which command line option was involved. All I could
1628 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1629 running as the user.
ea3a6f44 1630 CAN-2005-0021
85b87bc2
PH
1631
163261. There was a buffer overflow vulnerability in the SPA authentication code
1633 (which came originally from the Samba project). I have added a test to the
1634 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 1635 CAN-2005-0022
b975ba52 1636
17ffcae7
PH
163762. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
1638 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
1639
d95f9fdb
PH
164063. The daemon start-up calls getloadavg() while still root for those OS that
1641 need the first call to be done as root, but it missed one case: when
1642 deliver_queue_load_max is set with deliver_drop_privilege. This is
1643 necessary for the benefit of the queue runner, because there is no re-exec
1644 when deliver_drop_privilege is set.
1645
86b8287f
PH
164664. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
1647 This has been fixed.
1648
60dc5e56
PH
164965. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1650 was in use, was not putting the data itself into the right store pool;
1651 consequently, it could be overwritten for a subsequent message in the same
1652 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1653 the caching.)
1654
533244af
PH
165566. Added hosts_max_try_hardlimit to the smtp transport, default 50.
1656
a5a28604
PH
165767. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
1658 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
1659 the function were treating the return as a boolean value, which happened to
1660 work because 0=false and not-0=true, but is not correct code.
1661
7e634d24
PH
166268. The host_aton() function was not handling scoped IPv6 addresses (those
1663 with, for example, "%eth0" on the end) correctly.
1664
3e11c26b
PH
166569. Fixed some compiler warnings in acl.c for the bitmaps specified with
1666 negated items (that is, ~something) in unsigned ints. Some compilers
1667 apparently mutter when there is no cast.
1668
6729cf78
PH
166970. If an address verification called from an ACL failed, and did not produce a
1670 user-specific message (i.e. there was only a "system" message), nothing was
1671 put in $acl_verify_message. In this situation, it now puts the system
1672 message there.
1673
00f00ca5
PH
167471. Change 4.23/11 added synchronization checking at the start of an SMTP
1675 session; change 4.31/43 added the unwanted input to the log line - except
1676 that it did not do this in the start of session case. It now does.
1677
c9bdd01c
PH
167872. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
1679 This is wrong and can cause the other end to generate a synchronization
1680 error if it is another Exim or anything else that does the synchronization
1681 check. A QUIT command is no longer sent after a timeout.
1682
d43194df
PH
168373. $host_lookup_deferred has been added, to make it easier to detect DEFERs
1684 during host lookups.
1685
fe5b5d0b
PH
168674. The defer_ok option of callout verification was not working if it was used
1687 when verifying addresses in header lines, that is, for this case:
1688
1689 verify = header_sender/callout=defer_ok
1690
76a2d7ba
PH
169175. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
1692 those file descriptors could be used for SMTP connections. If anything
1693 wrote to stderr (the example that came up was "warn" in embedded Perl), it
1694 could be sent to the SMTP client, causing chaos. The daemon now opens
1695 stdin, stdout, and stderr to /dev/null when it puts itself into the
1696 background.
1697
169876. Arrange for output from Perl's "warn" command to be written to Exim's main
1699 log by default. The user can override this with suitable Perl magic.
1700
04f7d5b9
PH
170177. The use of log_message on a "discard" ACL verb, which is supposed to add to
1702 the log message when discard triggers, was not working for the DATA ACL or
1703 for the non-SMTP ACL.
1704
bc60667e
PH
170578. Error message wording change in sieve.c.
1706
bb6e88ff
PH
170779. If smtp_accept_max_per_host was set, the number of connections could be
1708 restricted to fewer than expected, because the daemon was trying to set up
1709 a new connection before checking whether the processes handling previous
1710 connections had finished. The check for completed processes is now done
1711 earlier. On busy systems, this bug wouldn't be noticed because something
1712 else would have woken the daemon, and it would have reaped the completed
1713 process earlier.
1714
1e70f85b
PH
171580. If a message was submitted locally by a user whose login name contained one
1716 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
1717 It caused a spool format error. I have fixed the spool reading code. A
1718 related problem was that the "from" clause in the Received: line became
1719 illegal because of the space(s). It is now covered by ${quote_local_part.
1720
172181. Included the latest eximstats from Steve (adds average sizes to HTML Top
1722 tables).
1723
4e01f9d6
PH
172482. Updated OS/Makefile-AIX as per message from Mike Meredith.
1725
1ee1cef2
PH
172683. Patch from Sieve maintainer to fix unterminated string problem in
1727 "vacation" handling.
1728
6e2b4ccc
PH
172984. Some minor changes to the Linux configuration files to help with other
1730 OS variants using glibc.
1731
8e669ac1
PH
173285. One more patch for Sieve to update vacation handling to latest spec.
1733
495ae4b0 1734
bbe902f0
PH
1735----------------------------------------------------
1736See the note above about the 4.44 and 4.50 releases.
1737----------------------------------------------------
1738
1739
1740Exim version 4.44
1741-----------------
1742
1743 1. Change 4.43/35 introduced a bug that caused file counts to be
1744 incorrectly computed when quota_filecount was set in an appendfile
1745 transport
1746
1747 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1748 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1749 place.
1750
1751 3. Give more explanation in the error message when the command for a transport
1752 filter fails to execute.
1753
1754 4. There are several places where Exim runs a non-Exim command in a
1755 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1756 was being done only for the command run by the queryprogram router. It is
1757 now done for all such subprocesses. The other cases are: ${run, transport
1758 filters, and the commands run by the lmtp and pipe transports.
1759
1760 5. Some older OS have a limit of 256 on the maximum number of file
1761 descriptors. Exim was using setrlimit() to set 1000 as a large value
1762 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1763 systems. I've change it so that if it can't get 1000, it tries for 256.
1764
1765 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1766 was an oversight, and furthermore, ever since the addition of extra
1767 controls (e.g. 4.43/32), the checks on when to allow different forms of
1768 "control" were broken. There should now be diagnostics for all cases when a
1769 control that does not make sense is encountered.
1770
1771 7. $recipients is now available in the predata ACL (oversight).
1772
1773 8. Tidy the search cache before the fork to do a delivery from a message
1774 received from the command line. Otherwise the child will trigger a lookup
1775 failure and thereby defer the delivery if it tries to use (for example) a
1776 cached ldap connection that the parent has called unbind on.
1777
1778 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1779 of $address_data from the recipient verification was clobbered by the
1780 sender verification.
1781
178210. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1783 was its contents. (It was OK if the option was not defined at all.)
1784
178511. A "Completed" log line is now written for messages that are removed from
1786 the spool by the -Mrm option.
1787
178812. $host_address is now set to the target address during the checking of
1789 ignore_target_hosts.
1790
179113. When checking ignore_target_hosts for an ipliteral router, no host name was
1792 being passed; this would have caused $sender_host_name to have been used if
1793 matching the list had actually called for a host name (not very likely,
1794 since this list is usually IP addresses). A host name is now passed as
1795 "[x.x.x.x]".
1796
179714. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1798 code that specifies a non-restarting handler (typically sigaction() in
1799 modern systems) in an attempt to fix a rare and obscure crash bug.
1800
180115. Narrowed the window for a race in the daemon that could cause it to ignore
1802 SIGCHLD signals. This is not a major problem, because they are used only to
1803 wake it up if nothing else does.
1804
180516. A malformed maildirsize file could cause Exim to calculate negative values
1806 for the mailbox size or file count. Odd effects could occur as a result.
1807 The maildirsize information is now recalculated if the size or filecount
1808 end up negative.
1809
181017. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1811 support for a long time. Removed HAVE_SYS_VFS_H.
1812
ea3a6f44 181318. Updated exipick to current release from John Jetmore.
bbe902f0
PH
1814
181519. Allow an empty sender to be matched against a lookup in an address list.
1816 Previously the only cases considered were a regular expression, or an
1817 empty pattern.
1818
181920. Exim went into a mad DNS lookup loop when doing a callout where the
1820 host was specified on the transport, if the DNS lookup yielded more than
1821 one IP address.
1822
ea3a6f44
NM
182321. The RFC2047 encoding function was originally intended for short strings
1824 such as real names; it was not keeping to the 75-character limit for
1825 encoded words that the RFC imposes. It now respects the limit, and
1826 generates multiple encoded words if necessary. To be on the safe side, I
1827 have increased the buffer size for the ${rfc2047: expansion operator from
1828 1024 to 2048 bytes.
bbe902f0 1829
ea3a6f44
NM
183022. Failure to deliver a bounce message always caused it to be frozen, even if
1831 there was an errors_to setting on the router. The errors_to setting is now
1832 respected.
bbe902f0
PH
1833
183423. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1835 canonical form (fully expanded) before being placed in
1836 $sender_host_address.
1837
183824. Updated eximstats to version 1.33
1839
ea3a6f44
NM
184025. Include certificate and key file names in error message when GnuTLS fails
1841 to set them up, because the GnuTLS error message doesn't include the name
1842 of the failing file when there is a problem reading it.
bbe902f0
PH
1843
184426. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 1845 As per change 25.
bbe902f0 1846
ea3a6f44
NM
184727. Reset the locale to "C" after calling embedded Perl, in case it was changed
1848 (this can affect the format of dates).
bbe902f0 1849
ea3a6f44
NM
185028. exim_tidydb, when checking for the continued existence of a message for
1851 which it has found a message-specific retry record, was not finding
1852 messages that were in split spool directories. Consequently, it was
1853 deleting retry records that should have stayed in existence.
bbe902f0
PH
1854
185529. eximstats updated to version 1.35
1856 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
1857 1.35 - bugfix such that pie charts by volume are generated correctly
1858
ea3a6f44
NM
185930. The SPA authentication driver was not abandoning authentication and moving
1860 on to the next authenticator when an expansion was forced to fail,
1861 contradicting the general specification for all authenticators. Instead it
1862 was generating a temporary error. It now behaves as specified.
bbe902f0 1863
ea3a6f44
NM
186431. The default ordering of permitted cipher suites for GnuTLS was pessimal
1865 (the order specifies the preference for clients). The order is now AES256,
1866 AES128, 3DES, ARCFOUR128.
bbe902f0 1867
ea3a6f44
NM
186831. Small patch to Sieve code - explicitly set From: when generating an
1869 autoreply.
bbe902f0 1870
ea3a6f44
NM
187132. Exim crashed if a remote delivery caused a very long error message to be
1872 recorded - for instance if somebody sent an entire SpamAssassin report back
1873 as a large number of 550 error lines. This bug was coincidentally fixed by
1874 increasing the size of one of Exim's internal buffers (big_buffer) that
1875 happened as part of the Exiscan merge. However, to be on the safe side, I
1876 have made the code more robust (and fixed the comments that describe what
1877 is going on).
bbe902f0 1878
ea3a6f44
NM
187933. Some experimental protocols are using DNS PTR records for new purposes. The
1880 keys for these records are domain names, not reversed IP addresses. The
1881 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1882 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
1883 CAN-2005-0021
1884
ea3a6f44
NM
188534. The host_aton() function is supposed to be passed a string that is known
1886 to be a valid IP address. However, in the case of IPv6 addresses, it was
1887 not checking this. This is a hostage to fortune. Exim now panics and dies
1888 if the condition is not met. A case was found where this could be provoked
1889 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1890 components; fortuitously, this particular loophole had already been fixed
1891 by change 4.50/55 or 4.44/33 above.
1892
1893 If there are any other similar loopholes, the new check in host_aton()
1894 itself should stop them being exploited. The report I received stated that
1895 data on the command line could provoke the exploit when Exim was running as
1896 exim, but did not say which command line option was involved. All I could
1897 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1898 running as the user.
bbe902f0
PH
1899 CAN-2005-0021
1900
ea3a6f44
NM
190135. There was a buffer overflow vulnerability in the SPA authentication code
1902 (which came originally from the Samba project). I have added a test to the
1903 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
1904 CAN-2005-0022
1905
ea3a6f44
NM
190636. The daemon start-up calls getloadavg() while still root for those OS that
1907 need the first call to be done as root, but it missed one case: when
1908 deliver_queue_load_max is set with deliver_drop_privilege. This is
1909 necessary for the benefit of the queue runner, because there is no re-exec
1910 when deliver_drop_privilege is set.
bbe902f0 1911
ea3a6f44
NM
191237. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1913 was in use, was not putting the data itself into the right store pool;
1914 consequently, it could be overwritten for a subsequent message in the same
1915 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1916 the caching.)
bbe902f0 1917
ea3a6f44
NM
191838. Sometimes the final signoff response after QUIT could fail to get
1919 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1920 < 0 before doing a fflush(). This bug looks as though it goes back to the
1921 introduction of TLS in release 3.20, but "sometimes" must have been rare
1922 because the tests only now provoked it.
bbe902f0
PH
1923
1924
495ae4b0
PH
1925Exim version 4.43
1926-----------------
1927
1928 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
1929 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
1930 Now it returns an integer. A number of calls were still expecting a T/F
1931 return. Fortuitously, in all cases, the tests worked in OK situations,
1932 which is the norm. However, things would have gone wrong on any write
1933 failures on the smtp file descriptor. This function is used when sending
1934 messages over SMTP and also when doing verify callouts.
1935
1936 2. When Exim is called to do synchronous delivery of a locally submitted
1937 message (the -odf or -odi options), it no longer closes stderr before doing
1938 the delivery.
1939
1940 3. Implemented the mua_wrapper option.
1941
1942 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
1943
1944 5. Implemented the functions header_remove(), header_testname(),
1945 header_add_at_position(), and receive_remove_recipient(), and exported them
1946 to local_scan().
1947
1948 6. If an ACL "warn" statement specified the addition of headers, Exim already
1949 inserted X-ACL-Warn: at the start if there was no header name. However, it
1950 was not making this test for the second and subsequent header lines if
1951 there were newlines in the string. This meant that an invalid header could
1952 be inserted if Exim was badly configured.
1953
1954 7. Allow an ACL "warn" statement to add header lines at the start or after all
1955 the Received: headers, as well as at the end.
1956
1957 8. Added the rcpt_4xx retry error code.
1958
1959 9. Added postmaster_mailfrom=xxx to callout verification option.
1960
196110. Added mailfrom=xxxx to the callout verification option, for verify=
1962 header_sender only.
1963
196411. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
1965 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
1966
196712. Inserted some casts to stop certain compilers warning when using pointer
1968 differences as field lengths or precisions in printf-type calls (mostly
1969 affecting debugging statements).
1970
197113. Added optional readline() support for -be (dynamically loaded).
1972
197314. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
1974 same clock tick as a message's arrival, so that its received time was the
1975 same as the "first fail" time on the retry record, and that message
1976 remained on the queue past the ultimate address timeout, every queue runner
1977 would try a delivery (because it was past the ultimate address timeout) but
1978 after another failure, the ultimate address timeout, which should have then
1979 bounced the address, did not kick in. This was a "< instead of <=" error;
1980 in most cases the first failure would have been in the next clock tick
1981 after the received time, and all would be well.
1982
198315. The special items beginning with @ in domain lists (e.g. @mx_any) were not
1984 being recognized when the domain list was tested by the match_domain
1985 condition in an expansion string.
1986
198716. Added the ${str2b64: operator.
1988
198917. Exim was always calling setrlimit() to set a large limit for the number of
1990 processes, without checking whether the existing limit was already
1991 adequate. (It did check for the limit on file descriptors.) Furthermore,
1992 errors from getrlimit() and setrlimit() were being ignored. Now they are
1993 logged to the main and panic logs, but Exim does carry on, to try to do its
1994 job under whatever limits there are.
1995
199618. Imported PCRE 5.0.
1997
199819. Trivial typo in log message " temporarily refused connection" (the leading
1999 space).
2000
200120. If the log selector return_path_on_delivery was set and an address was
2002 redirected to /dev/null, the delivery process crashed because it assumed
2003 that a return path would always be set for a "successful" delivery. In this
2004 case, the whole delivery is bypassed as an optimization, and therefore no
2005 return path is set.
2006
200721. Internal re-arrangement: the function for sending a challenge and reading
2008 a response while authentication was assuming a zero-terminated challenge
2009 string. It's now changed to take a pointer and a length, to allow for
2010 binary data in such strings.
2011
201222. Added the cyrus_sasl authenticator (code supplied by MBM).
2013
201423. Exim was not respecting finduser_retries when seeking the login of the
2015 uid under which it was called; it was always trying 10 times. (The default
2016 setting of finduser_retries is zero.) Also, it was sleeping after the final
2017 failure, which is pointless.
2018
201924. Implemented tls_on_connect_ports.
2020
202125. Implemented acl_smtp_predata.
2022
202326. If the domain in control=submission is set empty, Exim assumes that the
2024 authenticated id is a complete email address when it generates From: or
2025 Sender: header lines.
2026
202727. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2028 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2029 chown and chgrp in /bin and hostname in /usr/bin.
2030
203128. Exim was keeping the "process log" file open after each use, just as it
2032 does for the main log. This opens the possibility of it remaining open for
2033 long periods when the USR1 signal hits a daemon. Occasional processlog
2034 errors were reported, that could have been caused by this. Anyway, it seems
2035 much more sensible not to leave this file open at all, so that is what now
2036 happens.
2037
203829. The long-running daemon process does not normally write to the log once it
2039 has entered its main loop, and it closes the log before doing so. This is
2040 so that log files can straightforwardly be renamed and moved. However,
2041 there are a couple of unusual error situations where the daemon does write
2042 log entries, and I had neglected to close the log afterwards.
2043
204430. The text of an SMTP error response that was received during a remote
2045 delivery was being truncated at 512 bytes. This is too short for some of
2046 the long messages that one sometimes sees. I've increased the limit to
2047 1024.
2048
204931. It is now possible to make retry rules that apply only when a message has a
2050 specific sender, in particular, an empty sender.
2051
205232. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2053 it possible to be selective about when SMTP synchronization is enforced.
2054
205533. Added "control = caseful_local_part" and "control = "caselower_local_part".
2056
205732. Implemented hosts_connection_nolog.
2058
205933. Added an ACL for QUIT.
2060
206134. Setting "delay_warning=" to disable warnings was not working; it gave a
2062 syntax error.
2063
206435. Added mailbox_size and mailbox_filecount to appendfile.
2065
206636. Added control = no_multiline_responses to ACLs.
2067
206837. There was a bug in the logic of the code that waits for the clock to tick
2069 in the case where the clock went backwards by a substantial amount such
2070 that the microsecond fraction of "now" was more than the microsecond
2071 fraction of "then" (but the whole seconds number was less).
2072
207338. Added support for the libradius Radius client library this is found on
2074 FreeBSD (previously only the radiusclient library was supported).
2075
2076
2077Exim version 4.42
2078-----------------
2079
2080 1. When certain lookups returned multiple values in the form name=value, the
2081 quoting of the values was not always being done properly. Specifically:
2082 (a) If the value started with a double quote, but contained no whitespace,
2083 it was not quoted.
2084 (b) If the value contained whitespace other than a space character (i.e.
2085 tabs or newlines or carriage returns) it was not quoted.
2086 This fix has been applied to the mysql and pgsql lookups by writing a
2087 separate quoting function and calling it from the lookup code. The fix
2088 should probably also be applied to nisplus, ibase and oracle lookups, but
2089 since I cannot test any of those, I have not disturbed their existing code.
2090
2091 2. A hit in the callout cache for a specific address caused a log line with no
2092 reason for rejecting RCPT. Now it says "Previous (cached) callout
2093 verification failure".
2094
2095 3. There was an off-by-one bug in the queryprogram router. An over-long
2096 return line was truncated at 256 instead of 255 characters, thereby
2097 overflowing its buffer with the terminating zero. As well as fixing this, I
2098 have increased the buffer size to 1024 (and made a note to document this).
2099
2100 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2101 when Exim is waiting for an SMTP response from a remote server, Exim
2102 restarts its select() call on the socket, thereby resetting its timeout.
2103 This is not a problem when such interrupts are rare. Somebody set up a cron
2104 job to run exiwhat every 2 minutes, which is less than the normal select()
2105 timeout (5 or 10 minutes). This meant that the select() timeout never
2106 kicked in because it was always reset. I have fixed this by comparing the
2107 time when an interrupt arrives with the time at the start of the first call
2108 to select(). If more time than the timeout has elapsed, the interrupt is
2109 treated as a timeout.
2110
2111 5. Some internal re-factoring in preparation for the addition of Sieve
2112 extensions (by MH). In particular, the "personal" test is moved to a
2113 separate function, and given an option for scanning Cc: and Bcc: (which is
2114 not set for Exim filters).
2115
2116 6. When Exim created an email address using the login of the caller as the
2117 local part (e.g. when creating a From: or Sender: header line), it was not
2118 quoting the local part when it contained special characters such as @.
2119
2120 7. Installed new OpenBSD configuration files.
2121
2122 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2123 try to make them clearer.
2124
2125 9. Callout options, other than the timeout value, were being ignored when
2126 verifying sender addresses in header lines. For example, when using
2127
2128 verify = header_sender/callout=no_cache
2129
2130 the cache was (incorrectly) being used.
2131
213210. Added a missing instance of ${EXE} to the exim_install script; this affects
2133 only the Cygwin environment.
2134
213511. When return_path_on_delivery was set as a log selector, if different remote
2136 addresses in the same message used different return paths and parallel
2137 remote delivery occurred, the wrong values would sometimes be logged.
2138 (Whenever a remote delivery process finished, the return path value from
2139 the most recently started remote delivery process was logged.)
2140
214112. RFC 3848 specifies standard names for the "with" phrase in Received: header
2142 lines when AUTH and/or TLS are in use. This is the "received protocol"
2143 field. Exim used to use "asmtp" for authenticated SMTP, without any
2144 indication (in the protocol name) for TLS use. Now it follows the RFC and
2145 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2146 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2147 names appear in log lines as well as in Received: header lines.
2148
214913. Installed MH's patches for Sieve to add the "copy" and "vacation"
2150 extensions, and comparison tests, and to fix some bugs.
2151
215214. Changes to the "personal" filter test:
2153
2154 (1) The test was buggy in that it was just doing the equivalent of
2155 "contains" tests on header lines. For example, if a user's address was
2156 anne@some.where, the "personal" test would incorrectly be true for
2157
2158 To: susanne@some.where
2159
2160 This test is now done by extracting each address from the header in turn,
2161 and checking the entire address. Other tests that are part of "personal"
2162 are now done using regular expressions (for example, to check local parts
2163 of addresses in From: header lines).
2164
2165 (2) The list of non-personal local parts in From: addresses has been
2166 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2167 taken from the Sieve specification recommendations.
2168
2169 (3) If the message contains any header line starting with "List-" it is
2170 treated as non-personal.
2171
2172 (4) The test for "circular" in the Subject: header line has been removed
2173 because it now seems ill-conceived.
2174
217515. Minor typos in src/EDITME comments corrected.
2176
217716. Installed latest exipick from John Jetmore.
2178
217917. If headers_add on a router specified a text string that was too long for
2180 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2181 of string_sprintf() is now avoided.
2182
218318. $message_body_size was not set (it was always zero) when running the DATA
2184 ACL and the local_scan() function.
2185
218619. For the "mail" command in an Exim filter, no default was being set for
2187 the once_repeat time, causing a random time value to be used if "once" was
2188 specified. (If the value happened to be <= 0, no repeat happened.) The
2189 default is now 0s, meaning "never repeat". The "vacation" command was OK
2190 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2191 (I found it when inspecting the code).
2192
219320. There is now an overall timeout for performing a callout verification. It
2194 defaults to 4 times the callout timeout, which applies to individual SMTP
2195 commands during the callout. The overall timeout applies when there is more
2196 than one host that can be tried. The timeout is checked before trying the
2197 next host. This prevents very long delays if there are a large number of
2198 hosts and all are timing out (e.g. when the network connections are timing
2199 out). The value of the overall timeout can be changed by specifying an
2200 additional sub-option for "callout", called "maxwait". For example:
2201
2202 verify = sender/callout=5s,maxwait=20s
2203
220421. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2205 to the end before writing, but this should make it even safer).
2206
220722. Exim was forgetting that it had advertised PIPELINING for the second and
2208 subsequent messages on an SMTP connection. It was also not resetting its
2209 memory on STARTTLS and an internal HELO.
2210
221123. When Exim logs an SMTP synchronization error within a session, it now
2212 records whether PIPELINING has been advertised or not.
2213
221424. Added 3 instances of "(long int)" casts to time_t variables that were being
2215 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2216 rather than long int.
2217
221825. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2219
222026. Added the never_mail option to autoreply.
2221
2222
2223Exim version 4.41
2224-----------------
2225
2226 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2227 crash if the getsockname() call failed; this can happen if a connection is
2228 closed very soon after it is established. The problem was simply in the
2229 order in which certain operations were done, causing Exim to try to write
2230 to the SMTP stream before it had set up the file descriptor. The bug has
2231 been fixed by making things happen in the correct order.
2232
2233
2234Exim version 4.40
2235-----------------
2236
2237 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2238 before the connection was closed, thus losing the rejection response.
2239
2240 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2241 some early Solaris releases, but causes trouble in current releases where
2242 socklen_t is defined.
2243
2244 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2245 always exist.
2246
2247 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2248 configured.
2249
2250 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2251 that releasing the top of it at the end releases what was used for sub-
2252 expansions (unless the block got too big). However, discard this block if
2253 the first thing is a variable or header, so that we can use its block when
2254 it is dynamic (useful for very large $message_headers, for example).
2255
2256 6. Lookups now cache *every* query, not just the most recent. A new, separate
2257 store pool is used for this. It can be recovered when all lookup caches are
2258 flushed. Lookups now release memory at the end of their result strings.
2259 This has involved some general refactoring of the lookup sources.
2260
2261 7. Some code has been added to the store_xxx() functions to reduce the amount
2262 of flapping under certain conditions.
2263
2264 8. log_incoming_interface used to affect only the <= reception log lines. Now
2265 it causes the local interface and port to be added to several more SMTP log
2266 lines, for example "SMTP connection from", and rejection lines.
2267
2268 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2269
227010. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2271
227211. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2273 could be overwritten at the end of the current message (or the start of a
2274 new message if it was set in a HELO ACL). The value is now preserved for
2275 the duration of the SMTP connection.
2276
227712. If a transport had a headers_rewrite setting, and a matching header line
2278 contained an unqualified address, that address was qualified, even if it
2279 did not match any rewriting rules. The underlying bug was that the values
2280 of the flags that permit the existence of unqualified sender and recipient
2281 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2282 non-local messages, and by -bnq for local messages) were not being
2283 preserved with the message after it was received.
2284
228513. When Exim was logging an SMTP synchronization error, it could sometimes log
2286 "next input=" as part of the text comprising the host identity instead of
2287 the correct text. The code was using the same buffer for two different
2288 strings. However, depending on which order the printing function evaluated
2289 its arguments, the bug did not always show up. Under Linux, for example, my
2290 test suite worked just fine.
2291
229214. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2293 doesn't work with some older versions of Perl. It has been changed to "my",
2294 which in any case is probably the better facility to use.
2295
229615. A really picky compiler found some instances of statements for creating
2297 error messages that either had too many or two few arguments for the format
2298 string.
2299
230016. The size of the buffer for calls to the DNS resolver has been increased
2301 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2302 for addresses that have a lot of PTR records. This alleviates a problem; it
2303 does not fully solve it.
2304
230517. A dnsdb lookup for PTR records that receives more data than will fit in the
2306 buffer now truncates the list and logs the incident, which is the same
2307 action as happens when Exim is looking up a host name and its aliases.
2308 Previously in this situation something unpredictable would happen;
2309 sometimes it was "internal error: store_reset failed".
2310
231118. If a server dropped the connection unexpectedly when an Exim client was
2312 using GnuTLS and trying to read a response, the client delivery process
2313 crashed while trying to generate an error log message.
2314
231519. If a "warn" verb in an ACL added multiple headers to a message in a single
2316 string, for example:
2317
2318 warn message = H1: something\nH2: something
2319
2320 the text was added as a single header line from Exim's point of view
2321 though it ended up OK in the delivered message. However, searching for the
2322 second and subsequent header lines using $h_h2: did not work. This has been
2323 fixed. Similarly, if a system filter added multiple headers in this way,
2324 the routers could not see them.
2325
232620. Expanded the error message when iplsearch is called with an invalid key to
2327 suggest using net-iplsearch in a host list.
2328
232921. When running tests using -bh, any delays imposed by "delay" modifiers in
2330 ACLs are no longer actually imposed (and a message to that effect is
2331 output).
2332
233322. If a "gecos" field in a passwd entry contained escaped characters, in
2334 particular, if it contained a \" sequence, Exim got it wrong when building
2335 a From: or a Sender: header from that name. A second bug also caused
2336 incorrect handling when an unquoted " was present following a character
2337 that needed quoting.
2338
233923. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2340 was not being matched caselessly.
2341
234224. Arranged for all hyphens in the exim.8 source to be escaped with
2343 backslashes.
2344
234525. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2346 properly. Recipient callout cache records were still being keyed to include
2347 the sender, even when use_sender was set false. This led to far more
2348 callouts that were necessary. The sender is no longer included in the key
2349 when use_sender is false.
2350
235126. Added "control = submission" modifier to ACLs.
2352
235327. Added the ${base62d: operator to decode base 62 numbers.
2354
235528. dnsdb lookups can now access SRV records.
2356
235729. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2358 the configuration file.
2359
236030. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2361 (-v) mode. This makes the output for a verbose queue run more intelligible.
2362
236331. Added a use_postmaster feature to recipient callouts.
2364
236532. Added the $body_zerocount variable, containing the number of binary zero
2366 bytes in the message body.
2367
236833. The time of last modification of the "new" subdirectory is now used as the
2369 "mailbox time last read" when there is a quota error for a maildir
2370 delivery.
2371
237234. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2373
237435. Added +ignore_unknown as a special item in host lists.
2375
237636. Code for decoding IPv6 addresses in host lists is now included, even if
2377 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2378 address was recognized as an IP address, but was then not correctly decoded
2379 into binary, causing unexpected and incorrect effects when compared with
2380 another IP address.
2381
2382
2383Exim version 4.34
2384-----------------
2385
2386 1. Very minor rewording of debugging text in manualroute to say "list of
2387 hosts" instead of "hostlist".
2388
2389 2. If verify=header_syntax was set, and a header line with an unqualified
2390 address (no domain) and a large number of spaces between the end of the
2391 name and the colon was received, the reception process suffered a buffer
2392 overflow, and (when I tested it) crashed. This was caused by some obsolete
2393 code that should have been removed. The fix is to remove it!
2394
2395 3. When running in the test harness, delay a bit after writing a bounce
2396 message to get a bit more predictability in the log output.
2397
2398 4. Added a call to search_tidyup() just before forking a reception process. In
2399 theory, someone could use a lookup in the expansion of smtp_accept_max_
2400 per_host which, without the tidyup, could leave open a database connection.
2401
2402 5. Added the variables $recipient_data and $sender_data which get set from a
2403 lookup success in an ACL "recipients" or "senders" condition, or a router
2404 "senders" option, similar to $domain_data and $local_part_data.
2405
2406 6. Moved the writing of debug_print from before to after the "senders" test
2407 for routers.
2408
2409 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2410 problems for message scanning, either using a data ACL, or using
2411 local_scan() because the Received: header was not generated till after they
2412 were called (in order to set the time as the time of reception completion).
2413 I have revised the way this works. The header is now generated after the
2414 body is received, but before the ACL or local_scan() are called. After they
2415 are run, the timestamp in the header is updated.
2416
2417
2418Exim version 4.33
2419-----------------
2420
2421 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2422 before starting a queue runner without re-exec. This happened only when
2423 deliver_drop_privilege was set or when the Exim user was set to root. The
2424 effect of the bug was that timeouts during subsequent deliveries caused
2425 crashes instead of being properly handled. The handler is now left at its
2426 default (and expected) setting.
2427
2428 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2429 message, again when deliver_drop_privilege is set or Exim is run as root.
2430 The bug described in (1) was not present in this case, but the tidying up
2431 of the other signals was missing. I have made the two cases consistent.
2432
2433 3. The ignore_target_hosts setting on a manualroute router was being ignored
2434 for hosts that were looked up using the /MX notation.
2435
2436 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2437 in domain lists.
2438
2439 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2440 operated on the sender address. After changing the $sender_address to <>
2441 for the sender address verify, Exim was re-instated it as the original
2442 (before rewriting) address, but remembering that it had rewritten it, so it
2443 wasn't rewriting it again. This bug also had the effect of breaking the
2444 sender address verification caching when the sender address was rewritten.
2445
2446 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2447 This has been changed so that if the ip literal address matches
2448 ignore_target_hosts, the router declines.
2449
2450 7. Added expansion conditions match_domain, match_address, and match_local_
2451 part (NOT match_host).
2452
2453 8. The placeholder for the Received: header didn't have a length field set.
2454
2455 9. Added code to Exim itself and to exim_lock to test for a specific race
2456 condition that could lead to file corruption when using MBX delivery. The
2457 issue is with the lockfile that is created in /tmp. If this file is removed
2458 after a process has opened it but before that process has acquired a lock,
2459 there is the potential for a second process to recreate the file and also
2460 acquire a lock. This could lead to two Exim processes writing to the file
2461 at the same time. The added code performs the same test as UW imapd; it
2462 checks after acquiring the lock that its file descriptor still refers to
2463 the same named file.
2464
246510. The buffer for building added header lines was of fixed size, 8192 bytes.
2466 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2467 when Exim is built.
2468
246911. Added the smtp_active_hostname option. If used, this will typically be made
2470 to depend on the incoming interface address. Because $interface_address is
2471 not set up until the daemon has forked a reception process, error responses
2472 that can happen earlier (such as "too many connections") no longer contain
2473 a host name.
2474
247512. If an expansion in a condition on a "warn" statement fails because a lookup
2476 defers, the "warn" statement is abandoned, and the next ACL statement is
2477 processed. Previously this caused the whole ACL to be aborted.
2478
247913. Added the iplsearch lookup type.
2480
248114. Added ident_timeout as a log selector.
2482
248315. Added tls_certificate_verified as a log selector.
2484
248516. Added a global option tls_require_ciphers (compare the smtp transport
2486 option of the same name). This controls incoming TLS connections.
2487
248817. I finally figured out how to make tls_require_ciphers do a similar thing
2489 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2490 before starting the TLS session.
2491
249218. Tabs are now shown as \t in -bP output.
2493
249419. If the log selector return_path_on_delivery was set, Exim crashed when
2495 bouncing a message because it had too many Received: header lines.
2496
249720. If two routers both had headers_remove settings, and the first one included
2498 a superfluous trailing colon, the final name in the first list and the
2499 first name in the second list were incorrectly joined into one item (with a
2500 colon in the middle).
2501
2502
2503Exim version 4.32
2504-----------------
2505
2506 1. Added -C and -D options to the exinext utility, mainly to make it easier
2507 to include in the automated testing, but these could be helpful when
2508 multiple configurations are in use.
2509
2510 2. The exinext utility was not formatting the output nicely when there was
2511 an alternate port involved in the retry record key, nor when there was a
2512 message id as well (for retries that were specific to a specific message
2513 and a specific host). It was also confused by IPv6 addresses, because of
2514 the additional colons they contain. I have fixed the IPv4 problem, and
2515 patched it up to do a reasonable job for IPv6.
2516
2517 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2518 delivery, the log line now contains "pipelined" if PIPELINING was used.
2519
2520 4. An SMTP transport process used to panic and die if the bind() call to set
2521 an explicit outgoing interface failed. This has been changed; it is now
2522 treated in the same way as a connect() failure.
2523
2524 5. A reference to $sender_host_name in the part of a conditional expansion
2525 that was being skipped was still causing a DNS lookup. This no longer
2526 occurs.
2527
2528 6. The def: expansion condition was not recognizing references to header lines
2529 that used bh_ and bheader_.
2530
2531 7. Added the _cache feature to named lists.
2532
2533 8. The code for checking quota_filecount in the appendfile transport was
2534 allowing one more file than it should have been.
2535
2536 9. For compatibility with Sendmail, the command line option
2537
2538 -prval:sval
2539
2540 is equivalent to
2541
2542 -oMr rval -oMs sval
2543
2544 and sets the incoming protocol and host name (for trusted callers). The
2545 host name and its colon can be omitted when only the protocol is to be set.
2546 Note the Exim already has two private options, -pd and -ps, that refer to
2547 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2548 "s", but I don't think that's a major issue.
2549
255010. A number of refactoring changes to the code, none of which should affect
2551 Exim's behaviour:
2552
2553 (a) The number of logging options was getting close to filling up the
2554 32-bit word that was used as a bit map. I have split them into two classes:
2555 those that are passed in the argument to log_write(), and those that are
2556 only ever tested independently outside of that function. These are now in
2557 separate 32-bit words, so there is plenty of room for expansion again.
2558 There is no change in the user interface or the logging behaviour.
2559
2560 (b) When building, for example, log lines, the code previously used a
2561 macro that called string_cat() twice, in order to add two strings. This is
2562 not really sufficiently general. Furthermore, there was one instance where
2563 it was actually wrong because one of the argument was used twice, and in
2564 one call a function was used. (As it happened, calling the function twice
2565 did not affect the overall behaviour.) The macro has been replaced by a
2566 function that can join an arbitrary number of extra strings onto a growing
2567 string.
2568
2569 (c) The code for expansion conditions now uses a table and a binary chop
2570 instead of a serial search (which was left over from when there were very
2571 few conditions). Also, it now recognizes conditions like "pam" even when
2572 the relevant support is not compiled in: a suitably worded error message is
2573 given if an attempt is made to use such a condition.
2574
257511. Added ${time_interval:xxxxx}.
2576
257712. A bug was causing one of the ddress fields not to be passed back correctly
2578 from remote delivery subprocesses. The field in question was not being
2579 subsequently used, so this caused to problems in practice.
2580
258113. Added new log selectors queue_time and deliver_time.
2582
258314. Might have fixed a bug in maildirsizefile handling that threw up
2584 "unexpected character" debug warnings, and recalculated the data
2585 unnecessarily. In any case, I expanded the warning message to give more
2586 information.
2587
258815. Added the message "Restricted characters in address" to the statements in
2589 the default ACL that block characters like @ and % in local parts.
2590
259116. Change 71 for release 4.31 proved to be much less benign that I imagined.
2592 Three changes have been made:
2593
2594 (a) There was a serious bug; a negative response to MAIL caused the whole
2595 recipient domain to be cached as invalid, thereby blocking all messages
2596 to all local parts at the same domain, from all senders. This bug has
2597 been fixed. The domain is no longer cached after a negative response to
2598 MAIL if the sender used is not empty.
2599
2600 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2601 been restored.
2602
2603 (c) A new callout option, "use_sender" has been added for people who want
2604 the modified behaviour.
2605
2606
2607Exim version 4.31
2608-----------------
2609
2610 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
2611 Larry Rosenman.
2612
2613 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
2614 indeed breaks things for older releases.
2615
2616 3. Added additional logging to the case where there is a problem reading data
2617 from a filter that is running in a subprocess using a pipe, in order to
2618 try to track down a specific problem.
2619
2620 4. Testing facility fudge: when running in the test harness and attempting
2621 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
2622 getting "No route to host". Convert this to a timeout.
2623
2624 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
2625 warning.
2626
2627 6. Some OS don't have socklen_t but use size_t instead. This affects the
2628 fifth argument of getsockopt() amongst other things. This is now
2629 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
2630 can be set for individual OS. I have set it for SunOS5, OSF1, and
2631 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
2632 some earlier ones do not.
2633
2634 7. Change 4.30/15 was not doing the test caselessly.
2635
2636 8. The standard form for an IPv6 address literal was being rejected by address
2637 parsing in, for example, MAIL and RCPT commands. An example of this kind of
2638 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
2639 this, as well as the form without the "IPv6" on the front (but only when
2640 address literals are enabled, of course).
2641
2642 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
2643
264410. Exim crashed if a message with an empty sender address specified by -f
2645 encountered a router with an errors_to setting. This could be provoked only
2646 by a command such as
2647
2648 exim -f "" ...
2649
2650 where an empty string was supplied; "<>" did not hit this bug.
2651
265211. Installed PCRE release 4.5.
2653
265412. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
2655 remained set. It is now erased.
2656
265713. exiqgrep wasn't working on MacOS X because it didn't correctly compute
2658 times from message ids (which are base 36 rather than the normal 62).
2659
266014. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
2661 were being counted as actual protocol errors, and logged if the log
2662 selector +smtp_protocol_error was set. One cannot be perfect in this test,
2663 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
2664 and DATA following a set of rejected RCPTs do not count as protocol errors.
2665 In other words, Exim assumes they were pipelined, though this may not
2666 actually be the case. Of course, in all cases the client gets an
2667 appropriate error code.
2668
266915. If a lookup fails in an ACL condition, a message about the failure may
2670 be available; it is used if testing the ACL cannot continue, because most
2671 such messages specify what the cause of the deferral is. However, some
2672 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
2673 that caused an old message to be retained and used if a later statement
2674 caused a defer, replacing the real cause of the deferral.
2675
267616. If an IP address had so many PTR records that the DNS lookup buffer
2677 was not large enough to hold them, Exim could crash while trying to process
2678 the truncated data. It now detects and logs this case.
2679
268017. Further to 4.21/58, another change has been made: if (and only if) the
2681 first line of a message (the first header line) ends with CRLF, a bare LF
2682 in a subsequent header line has a space inserted after it, so as not to
2683 terminate the header.
2684
268518. Refactoring: tidied an ugly bit of code in appendfile that copied data
2686 unnecessarily, used atoi() instead of strtol(), and didn't check the
2687 termination when getting file sizes from file names by regex.
2688
268919. Completely re-implemented the support for maildirsize files, in the light
2690 of a number of problems with the previous contributed implementation
2691 (4.30/29). In particular:
2692
2693 . If the quota is zero, the maildirsize file is maintained, but no quota is
2694 imposed.
2695
2696 . If the maildir directory does not exist, it is created before any attempt
2697 to write a maildirsize file.
2698
2699 . The quota value in the file is just a cache; if the quota is changed in
2700 the transport, the new value overrides.
2701
2702 . A regular expression is available for excluding directories from the
2703 count.
2704
270520. The autoreply transport checks the characters in options that define the
2706 message's headers; it allows continued headers, but it was checking with
2707 isspace() after an embedded newline instead of explicitly looking for a
2708 space or a tab.
2709
271021. If all the "regular" hosts to which an address was routed had passed their
2711 expiry times, and had not reached their retry times, the address was
2712 bounced, even if fallback hosts were defined. Now Exim should go on to try
2713 the fallback hosts.
2714
271522. Increased buffer sizes in the callout code from 1024 to 4096 to match the
2716 equivalent code in the SMTP transport. Some hosts send humungous responses
2717 to HELO/EHLO, more than 1024 it seems.
2718
271923. Refactoring: code in filter.c used (void *) for "any old type" but this
2720 gives compiler warnings in some environments. I've now done it "properly",
2721 using a union.
2722
272324. The replacement for inet_ntoa() that is used with gcc on IRIX systems
2724 (because of problems with the built-in one) was declared to return uschar *
2725 instead of char *, causing compiler failure.
2726
272725. Fixed a file descriptor leak when processing alias/forward files.
2728
272926. Fixed a minor format string issue in dbfn.c.
2730
273127. Typo in exim.c: ("dmbnz" for "dbmnz").
2732
273328. If a filter file refered to $h_xxx or $message_headers, and the headers
2734 contained RFC 2047 "words", Exim's memory could, under certain conditions,
2735 become corrupted.
2736
273729. When a sender address is verified, it is cached, to save repeating the test
2738 when there is more than one recipient in a message. However, when the
2739 verification involves a callout, it is possible for different callout
2740 options to be set for different recipients. It is too complicated to keep
2741 track of this in the cache, so now Exim always runs a verification when a
2742 callout is required, relying on the callout cache for the optimization.
2743 The overhead is duplication of the address routing, but this should not be
2744 too great.
2745
274630. Fixed a bug in callout caching. If a RCPT command caused the sender address
2747 to be verified with callout=postmaster, and the main callout worked but the
2748 postmaster check failed, the verification correctly failed. However, if a
2749 subsequent RCPT command asked for sender verification *without* the
2750 postmaster check, incorrect caching caused this verification also to fail,
2751 incorrectly.
2752
275331. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
2754 it was not caching the DNS options (qualify_single, search_parents) that
2755 were used when the lookup failed. A subsequent lookup with different
2756 options therefore always gave the same answer, though there were cases
2757 where it should not have. (Example: a "domains = !$mx_any" option on a
2758 dnslookup router: the "domains" option is always processed without any
2759 widening, but the router might have qualify_single set.) Now Exim uses the
2760 cached value only when the same options are set.
2761
276232. Added John Jetmore's "exipick" utility to the distribution.
2763
276433. GnuTLS: When an attempt to start a TLS session fails for any reason other
2765 than a timeout (e.g. a certificate is required, and is not provided), an
2766 Exim server now closes the connection immediately. Previously it waited for
2767 the client to close - but if the client is SSL, it seems that they each
2768 wait for each other, leading to a delay before one of them times out.
2769
277034: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
2771 maintained 0.8.x compatibility because I don't think many are using it, and
2772 it is clearly obsolete.
2773
277435. Added TLS support for CRLs: a tls_crl global option and one for the smtp
2775 transport.
2776
277736. OpenSSL: $tls_certificate_verified was being set to 1 even if the
2778 client certificate was expired. A simple patch fixes this, though I don't
2779 understand the full logic of why the verify callback is called multiple
2780 times.
2781
278237. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
2783 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
2784 which causes problems with some clients (such as the Certicom SSL Plus
2785 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
2786 disables the coutermeasure allowing Eudora to connect."
2787
278838. Exim was not checking that a write() to a log file succeeded. This could
2789 lead to Bad Things if a log got too big, in particular if it hit a file
2790 size limit. Exim now panics and dies if it cannot write to a log file, just
2791 as it does if it cannot open a log file.
2792
279339. Modified OS/Makefile-Linux so that it now contains
2794
2795 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
2796
2797 The two -D definitions ensure that Exim is compiled with large file
2798 support, which makes it possible to handle log files that are bigger than
2799 2^31.
2800
280140. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
2802 instance) a domain was checked against a named list that involved a lookup,
2803 causing $domain_data to be set, then another domain was checked against the
2804 same list, then the first domain was re-checked, the value of $domain_data
2805 after the final check could be wrong. In particular, if the second check
2806 failed, it could be set empty. This bug probably also applied to
2807 $localpart_data.
2808
280941. The strip_trailing_dot option was not being applied to the address given
2810 with the -f command-line option.
2811
281242. The code for reading a message's header from the spool was incrementing
2813 $received_count, but never initializing it. This meant that the value was
2814 incorrect (doubled) while delivering a message in the same process in which
2815 it was received. In the most common configuration of Exim, this never
2816 happens - a fresh exec is done - but it can happen when
2817 deliver_drop_privilege is set.
2818
281943. When Exim logs an SMTP synchronization error - client data sent too soon -
2820 it now includes up to 150 characters of the unexpected data in the log
2821 line.
2822
282344. The exim_dbmbuild utility uses fixed size buffers for reading input lines
2824 and building data strings. The size of both of these buffers was 10 000
2825 bytes - far larger than anybody would *ever* want, thought I. Needless to
2826 say, somebody hit the limit. I have increased the maximum line length to
2827 20 000 and the maximum data length of concatenated lines to 100 000. I have
2828 also fixed two bugs, because there was no checking on these buffers. Tsk,
2829 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
2830 buffer is too small.
2831
283245. The exim_dbmbuild utility did not support quoted keys, as Exim does in
2833 lsearch lookups. Now it does.
2834
283546. When parsing a route_list item in a manualroute router, a fixed-length
2836 buffer was used for the list of hosts. I made this 1024 bytes long,
2837 thinking that nobody would ever have a list of hosts that long. Wrong.
2838 Somebody had a whole pile of complicated expansion conditions, and the
2839 string was silently truncated, leading to an expansion error. It turns out
2840 that it is easier to change to an unlimited length (owing to other changes
2841 that have happened since this code was originally written) than to build
2842 structure for giving a limitation error. The length of the item that
2843 expands into the list of hosts is now unlimited.
2844
284547. The lsearch lookup could not handle data where the length of text line was
2846 more than 4095 characters. Such lines were truncated, leading to shortened
2847 data being returned. It should now handle lines of any length.
2848
284948. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
2850 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
2851 ACL").
2852
285349. Cosmetic tidy to scripts like exicyclog that are generated by globally
2854 replacing strings such as BIN_DIRECTORY in a source file: the replacement
2855 no longer happens in comment lines. A list of replacements is now placed
2856 at the head of all of the source files, except those whose only change is
2857 to replace PERL_COMMAND in the very first #! line.
2858
285950. Replaced the slow insertion sort in queue.c, for sorting the list of
2860 messages on the queue, with a bottom-up merge sort, using code contributed
2861 by Michael Haardt. This should make operations like -bp somewhat faster on
2862 large queues. It won't affect queue runners, except when queue_run_in_order
2863 is set.
2864
286551. Installed eximstats 1.31 in the distribution.
2866
286752. Added support for SRV lookups to the dnslookup router.
2868
286953. If an ACL referred to $message_body or $message_body_end, the value was not
2870 reset for any messages that followed in the same SMTP session.
2871
287254. The store-handling optimization for building very long strings was not
2873 differentiating between the different store pools. I don't think this
2874 actually made any difference in practice, but I've tidied it.
2875
287655. While running the routers to verify a sender address, $sender_address
2877 was still set to the sender address. This is wrong, because when routing to
2878 send a bounce to the sender, it would be empty. Therefore, I have changed
2879 it so that, while verifying a sender address, $sender_address is set to <>.
2880 (There is no change to what happens when verifying a recipient address.)
2881
288256. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
2883 target A or AAAA records (if not already returned) without resetting the
2884 qualify_single or search_parents options of the DNS resolver. These are
2885 inappropriate in this case because the targets of MX and SRV records must
2886 be FQDNs. A broken DNS record could cause trouble if it happened to have a
2887 target that, when qualified, matched something in the local domain. These
2888 two options are now turned off when doing these lookups.
2889
289057. It seems that at least some releases of Reiserfs (which does not have the
2891 concept of a fixed number of inodes) returns zero and not -1 for the
2892 number of available inodes. This interacted badly with check_spool_inodes,
2893 which assumed that -1 was the "no such thing" setting. What I have done is
2894 to check that the total number of inodes is greater than zero before doing
2895 the test of how many are available.
2896
289758. When a "warn" ACL statement has a log_message modifier, the message is
2898 remembered, and not repeated. This is to avoid a lot of repetition when a
2899 message has many recipients that cause the same warning to be written.
2900 Howewer, Exim was preserving the list of already written lines for an
2901 entire SMTP session, which doesn't seem right. The memory is now reset if a
2902 new message is started.
2903
290459. The "rewrite" debugging flag was not showing the result of rewriting in the
2905 debugging output unless log_rewrite was also set.
2906
290760. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
2908 of (int)(handle) when we know that handle contains (void *)(-1).
2909
291061. The Exim daemon panic-logs an error return when it closes the incoming
2911 connection. However "connection reset by peer" seems to be common, and
2912 isn't really an error worthy of noting specially, so that particular error
2913 is no long logged.
2914
291562. When Exim is trying to find all the local interfaces, it used to panic and
2916 die if the ioctl to get the interface flags failed. However, it seems that
2917 on at least one OS (Solaris 9) it is possible to have an interface that is
2918 included in the list of interfaces, but for which you get a failure error
2919 for this call. This happens when the interface is not "plumbed" into a
2920 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
2921 failure of the "get flags" call assumes that the interface is down.
2922
292363. Added a ${eval10: operator, which assumes all numbers are decimal. This
2924 makes life easier for people who are doing arithmetic on fields extracted
2925 from dates, where you often get leading zeros that should not be
2926 interpreted as octal.
2927
292864. Added qualify_domain to the redirect router, to override the global
2929 setting.
2930
293165. If a pathologically long header line contained very many addresses (the
2932 report of this problem mentioned 10 000) and each of them was rewritten,
2933 Exim could use up a very large amount of memory. (It kept on making new
2934 copies of the header line as it rewrote, and never released the old ones.)
2935 At the expense of a bit more processing, the header rewriting function has
2936 been changed so that it no longer eats memory in this way.
2937
293866. The generation of the Received: header has been moved from the time that a
2939 message starts to be received, to the time that it finishes. The timestamp
2940 in the Received: header should now be very close to that of the <= log
2941 line. There are two side-effects of this change:
2942
2943 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
2944 logged header lines no longer include the local Received: line, because
2945 it has not yet been created. The same applies to a copy of the message
2946 that is returned to a non-SMTP sender when a message is rejected.
2947
2948 (b) When a filter file is tested using -bf, no additional Received: header
2949 is added to the test message. After some thought, I decided that this
2950 is a bug fix.
2951
2952 This change does not affect the value of $received_for. It is still set
2953 after address rewriting, but before local_scan() is called.
2954
295567. Installed the latest Cygwin-specific files from the Cygwin maintainer.
2956
295768. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
2958 gave an unhelpful panic error message, and a defer error. I have managed to
2959 change this behaviour so that it now rejects any supplied certificate,
2960 which seems right, as the list of acceptable certificates is empty.
2961
296269. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
2963 gave an unhelpful defer error. I have not managed to make this reject any
2964 supplied certificates, but the error message it gives is "no certificate
2965 supplied", which is not helpful.
2966
296770. exigrep's output now also includes lines that are not associated with any
2968 message, but which match the given pattern. Implemented by a patch from
2969 Martin Sluka, which also tidied up the Perl a bit.
2970
297171. Recipient callout verification, like sender verification, was using <> in
2972 the MAIL FROM command. This isn't really the right thing, since the actual
2973 sender may affect whether the remote host accepts the recipient or not. I
2974 have changed it to use the actual sender in the callout; this means that
2975 the cache record is now keyed on a recipient/sender pair, not just the
2976 recipient address. There doesn't seem to be a real danger of callout loops,
2977 since a callout by the remote host to check the sender would use <>.
2978 [SEE ABOVE: changed after hitting problems.]
2979
298072. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
2981 temporary errors. However, in the case of such a code being given after
2982 the end of a data transmission (i.e. after ".") Exim was failing to write
2983 a retry record for the message. (Yes, there was some broken host that was
2984 actually sending 8xx at this point.)
2985
298673. An unknown lookup type in a host list could cause Exim to panic-die when
2987 the list was checked. (An example that provoked this was putting <; in the
2988 middle of a list instead of at the start.) If this happened during a DATA
2989 ACL check, a -D file could be left lying around. This kind of configuration
2990 error no longer causes Exim to die; instead it causes a defer errror. The
2991 incident is still logged to the main and panic logs.
2992
299374. Buglet left over from Exim 3 conversion. The message "too many messages
2994 in one connection" was written to the rejectlog but not the mainlog, except
2995 when address rewriting (yes!) was being logged.
2996
299775. Added write_rejectlog option.
2998
299976. When a system filter was run not as root (that is, when system_filter_user
3000 was set), the values of the $n variables were not being returned to the
3001 main process; thus, they were not subsequently available in the $sn
3002 variables.
3003
300477. Added +return_path_on_delivery log selector.
3005
300678. A connection timeout was being treated differently from recipients deferred
3007 when testing hosts_max_try with a message that was older than the host's
3008 retry timeout. (The host should not be counted, thus allowing all hosts to
3009 be tried at least once before bouncing.) This may have been the cause of an
3010 occasionally reported bug whereby a message would remain on the queue
3011 longer than the retry timeout, but would be bounced if a delivery was
3012 forced. I say "may" because I never totally pinned down the problem;
3013 setting up timeout/retry tests is difficult. See also the next item.
3014
301579. The ultimate address timeout was not being applied to errors that involved
3016 a combination of host plus message (for example, a timeout on a MAIL
3017 command). When an address resolved to a number of possible hosts, and they
3018 were not all tried for each delivery (e.g. because of hosts_max_try), a
3019 message could remain on the queue longer than the retry timeout.
3020
302180. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3022 Haardt.
3023
302481. Fixed an obscure SMTP outgoing bug which required at least the following
3025 conditions: (a) there was another message waiting for the same server;
3026 (b) the server returned 5xx to all RCPT commands in the first message so
3027 that the message was not completed; (c) the server dropped the connection
3028 or gave a negative response to the RSET that Exim sends to abort the
3029 transaction. The observed case was a dropped connection after DATA that had
3030 been sent in pipelining mode. That is, the server had advertised PIPELINING
3031 but was not implementing it correctly. The effect of the bug was incorrect
3032 behaviour, such as trying another host, and this could lead to a crash.
3033
3034
3035Exim version 4.30
3036-----------------
3037
3038 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3039 and daemon.c were passed as pointers to ints; they should have been
3040 pointers to socklen_t variables (which are typically unsigned ints).
3041
3042 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3043 fixed.
3044
3045 3. Fixed a really odd bug that affected only the testing scheme; patching a
3046 certain fixed string in the binary changed the value of another string that
3047 happened to be identical to the end of the original first string.
3048
3049 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3050 name", it returns that address as the IP address. On some operating
3051 systems (e.g. Solaris), it also passes back the IP address string as the
3052 "host name". However, on others (e.g. Linux), it passes back an empty
3053 string. Exim wasn't checking for this, and was changing the host name to an
3054 empty string, assuming it had been canonicized.
3055
3056 5. Although rare, it is permitted to have more than one PTR record for a given
3057 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3058 all the names associated with an address, because they do in Solaris.
3059 However, it seems that they do not in Linux for data that comes from the
3060 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3061 I found this out when I moved to a new Linux workstation and tried to run
3062 the Exim test suite.
3063
3064 To get round this problem I have changed the code so that it now does its
3065 own call to the DNS to look up PTR records when searching for a host name.
3066 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3067 addresses that are only in /etc/hosts are still found.
3068
3069 This behaviour is, however, controlled by an option called host_lookup_
3070 order, which defaults to "bydns:byaddr". If people want to use the other
3071 order, or indeed, just use one or the other means of lookup, they can
3072 specify it in this variable.
3073
3074 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3075 some operating systems, this comes back from gethostbyaddr() as an empty
3076 string, and this is what Exim used to test for. However, it seems that in
3077 other systems, "." is yielded. Exim now tests for this case too.
3078
3079 7. The values of check_spool_space and check_log_space are now held internally
3080 as a number of kilobytes instead of an absolute number of bytes. If a
3081 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3082 kilobyte. This means that much larger values can be stored.
3083
3084 8. Exim monitor: an attempt to get the action menu when not actually pointing
3085 at a message produces an empty menu entitled "No message selected". This
3086 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3087 no entries in it ("Shell widget menu has zero width and/or height"). So I
3088 have added a single, blank menu entry in this case.
3089
3090 9. Added ${quote_local_part.
3091
309210. MIME decoding is now applied to the contents of Subject: header lines when
3093 they are logged.
3094
309511. Now that a reference to $sender_host_address automatically causes a reverse
3096 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3097 host lookup before query-style lookups in lists that might use this
3098 variable. This has therefore been abolished, and the "net-" prefix is no
3099 longer necessary for query-style lookups.
3100
310112. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3102 have been a typo for LFLAGS, so it has been changed.
3103
310413. The install script calls Exim with "-C /dev/null" in order to find the
3105 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3106 to be output. Howeve, since Exim outputs its version number before the
3107 error, it didn't break the script. It just looked ugly. I fixed this by
3108 always allowing "-C /dev/null" if the caller is root.
3109
311014. Ignore overlarge ACL variable number when reading spool file - insurance
3111 against a later release with more variables having written the file.
3112
311315. The standard form for an IPv6 address literal was being rejected by EHLO.
3114 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3115 this, as well as the form without the "IPv6" on the front.
3116
311716. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3118 OS/Makefile-Darwin file.
3119
312017. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3121 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3122
312318. After change 4.21/52, "%ld" was used to format the contents of the $inode
3124 variable. However, some OS use ints for inodes. I've added cast to long int
3125 to get rid of the compiler warning.
3126
312719. I had forgotten to lock out "/../" in configuration file names when
3128 ALT_CONFIG_PREFIX was set.
3129
313020. Routers used for verification do not need to specify transports. However,
3131 if such a router generated a host list, and callout was configured, Exim
3132 crashed, because it could not find a port number from the (non-existent)
3133 transport. It now assumes port 25 in this circumstance.
3134
313521. Added the -t option to exigrep.
3136
313722. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3138 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3139 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3140 them is set, LOOKUP_LSEARCH is forced.
3141
314223. "exim -bV" now outputs a list of lookups that are included in the binary.
3143
314424. Added sender and host information to the "rejected by local_scan()" log
3145 line; previously there was no indication of these.
3146
314725. Added .include_if_exists.
3148
314926. Change 3.952/11 added an explicit directory sync on top of a file sync for
3150 Linux. It turns out that not all file systems support this. Apparently some
3151 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3152 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3153 not supported on the file descriptor, is now ignored when Exim is trying to
3154 sync a directory. This applies only to Linux.
3155
315627. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3157
315828. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3159 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3160 this.
3161
316229. Added support for maildirsize files from supplied patch (modified a bit).
3163
316430. The use of :fail: followed by an empty string could lead Exim to respond to
3165 sender verification failures with (e.g.):
3166
3167 550 Verification failed for <xxx>
3168 550 Sender verify failed
3169
3170 where the first response line was missing the '-' that indicates it is not
3171 the final line of the response.
3172
317331. The loop for finding the name of the user that called Exim had a hardwired
3174 limit of 10; it now uses the value of finduser_retries, which is used for
3175 all other user lookups.
3176
317732. Added $received_count variable, available in data and not_smtp ACLs, and at
3178 delivery time.
3179
318033. Exim was neglecting to zero errno before one call of strtol() when
3181 expanding a string and expecting an integer value. On some systems this
3182 resulted in spurious "integer overflow" errors. Also, it was casting the
3183 result into an int without checking.
3184
318534. Testing for a connection timeout using "timeout_connect" in the retry rules
3186 did not work. The code looks as if it has *never* worked, though it appears
3187 to have been documented since at least releast 1.62. I have made it work.
3188
318935. The "timeout_DNS" error in retry rules, also documented since at least
3190 1.62, also never worked. As it isn't clear exactly what this means, and
3191 clearly it isn't a major issue, I have abolished the feature by treating it
3192 as "timeout", and writing a warning to the main and panic logs.
3193
319436. The display of retry rules for -brt wasn't always showing the error code
3195 correctly.
3196
319737. Added new error conditions to retry rules: timeout_A, timeout_MX,
3198 timeout_connect_A, timeout_connect_MX.
3199
320038. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3201 to the empty sender.
3202
320339. The daemon was not analysing the content of -oX till after it had closed
3204 stderr and disconnected from the controlling terminal. This meant that any
3205 syntax errors were only noted on the panic log, and the return code from
3206 the command was 0. By re-arranging the code a little, I've made the
3207 decoding happen first, so such errors now appear on stderr, and the return
3208 code is 1. However, the actual setting up of the sockets still happens in
3209 the disconnected process, so errors there are still only recorded on the
3210 panic log.
3211
321240. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3213 connections (as happens on some IP stacks) was logged at start up time as
3214 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3215 it from "IPv6 and IPv4", which means that two separate sockets are being
3216 used.
3217
321841. The debug output for gethostbyname2() or getipnodebyname() failures now
3219 says whether AF_INET or AF_INET6 was passed as an argument.
3220
322142. Exiwhat output was messed up when time zones were included in log
3222 timestamps.
3223
322443. Exiwhat now gives more information about the daemon's listening ports,
3225 and whether -tls-on-connect was used.
3226
322744. The "port" option of the smtp transport is now expanded.
3228
322945. A "message" modifier in a "warn" statement in a non-message ACL was being
3230 silently ignored. Now an error message is written to the main and panic
3231 logs.
3232
323346. There's a new ACL modifier called "logwrite" which writes to a log file
3234 as soon as it is encountered.
3235
323647. Added $local_user_uid and $local_user_gid at routing time.
3237
323848. Exim crashed when trying to verify a sender address that was being
3239 rewritten to "<>".
3240
324149. Exim was recognizing only a space character after ".include". It now also
3242 recognizes a tab character.
3243
324450. Fixed several bugs in the Perl script that creates the exim.8 man page by
3245 extracting the relevant information from the specification. The man page no
3246 longer contains scrambled data for the -d option, and I've added a section
3247 at the front about calling Exim under different names.
3248
324951. Added "extra_headers" argument to the "mail" command in filter files.
3250
325152. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
3252 crash.
3253
325453. Installed eximstats 1.29.
3255
325654. Added transport_filter_timeout as a generic transport option.
3257
325855. Exim no longer adds an empty Bcc: header to messages that have no To: or
3259 Cc: header lines. This was required by RFC 822, but it not required by RFC
3260 2822.
3261
326256. Exim used to add From:, Date:, and Message-Id: header lines to any
3263 incoming messages that did not have them. Now it does so only if the
3264 message originates locally, that is, if there is no associated remote host
3265 address. When Resent- header lines are present, this applies to the Resent-
3266 lines rather than the non-Resent- lines.
3267
326857. Drop incoming SMTP connection after too many syntax or protocol errors. The
3269 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
3270
327158. Messages for configuration errors now include the name of the main
3272 configuration file - useful now that there may be more than one file in a
3273 list (.included file names were always shown).
3274
327559. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
3276 for those rare installations that do not start the daemon as root or run it
3277 setuid root. I've cut out the call to initgroups() if the daemon is not
3278 root at that time.
3279
328060. The Exim user and group can now be bound into the binary as text strings
3281 that are looked up at the start of Exim's processing.
3282
328361. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
3284
328562. Added $mailstore_basename variable.
3286
328763. Installed patch to sieve.c from Michael Haardt.
3288
328964. When Exim failed to open the panic log after failing to open the main log,
3290 the original message it was trying to log was written to stderr and debug
3291 output, but if they were not available (the usual case in production), it
3292 was lost. Now it is written to syslog before the two lines that record the
3293 failures to open the logs.
3294
329565. Users' Exim filters run in subprocesses under the user's uid. It is
3296 possible for a "deliver" command or an alias in a "personal" command to
3297 provoke an address rewrite. If logging of address rewriting is configured,
3298 this fails because the process is not running as root or exim. There may be
3299 a better way of dealing with this, but for the moment (because 4.30 needs
3300 to be released), I have disabled address rewrite logging when running a
3301 filter in a non-root, non-exim process.
3302
3303
3304Exim version 4.24
3305-----------------
3306
3307 1. The buildconfig auxiliary program wasn't quoting the value set for
3308 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
3309 not defined. This bug was masked in 4.22 by the effect that was fixed in
3310 change 4.23/1.
3311
3312 2. Some messages that were rejected after a message id was allocated were
3313 shown as "incomplete" by exigrep. It no longer does this for messages that
3314 are rejected by local_scan() or the DATA or non-SMTP ACLs.
3315
3316 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
3317 have allow_domain_literals set, the ID did not get logged in the <= line.
3318 Domain literals are now always recognized in Message-ID: header lines.
3319
3320 4. The first argument for a ${extract expansion item is the key name or field
3321 number. Leading and trailing spaces in this item were not being ignored,
3322 causing some misleading effects.
3323
3324 5. When deliver_drop_privilege was set, single queue runner processes started
3325 manually (i.e. by the command "exim -q") or by the daemon (which uses the
3326 same command in the process it spins off) were not dropping privilege.
3327
3328 6. When the daemon running as "exim" started a queue runner, it always
3329 re-executed Exim in the spun-off process. This is a waste of effort when
3330 deliver_drop_privilege is set. The new process now just calls the
3331 queue-runner function directly.
3332
3333
3334Exim version 4.23
3335-----------------
3336
3337 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
3338 HEADERS_CHARSET.
3339
3340 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
3341 ignored. Though the use of -oP was forcing the writing of a pid file, it
3342 was always written to the default place.
3343
3344 3. If the message "no IP address found for host xxxx" is generated during
3345 incoming verification, it is now followed by identification of the incoming
3346 connection (so you can more easily find what provoked it).
3347
3348 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
3349
3350 5. Added some features to "harden" Exim a bit more against certain attacks:
3351
3352 (a) There is now a build-time option called FIXED_NEVER_USERS that can
3353 be put in Local/Makefile. This is like the never_users runtime option,
3354 but it cannot be overridden. The default setting is "root".
3355
3356 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
3357 prefix string with which any file named in a -C command line option
3358 must start.
3359
3360 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
3361 is retained for -C and -D only if the caller of Exim is root. Without
3362 it, the exim user may also use -C and -D and retain privilege.
3363
3364 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
3365 command line option is disabled.
3366
3367 6. Macro names set by the -D option must start with an upper case letter, just
3368 like macro names defined in the configuration file.
3369
3370 7. Added "dereference=" facility to LDAP.
3371
3372 8. Two instances of the typo "uknown" in the source files are fixed.
3373
3374 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
3375 the Configure-Makefile script screwed up while processing it.
3376
337710. Incorporated PCRE 4.4.
3378
337911. The SMTP synchronization check was not operating right at the start of an
3380 SMTP session. For example, it could not catch a HELO sent before the client
3381 waited for the greeting. There is now a check for outstanding input at the
3382 point when the greeting is written. Because of the duplex, asynchronous
3383 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
3384 way, but not yet received, when the check is performed.
3385
338612. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
3387 on TCP/IP sockets, because this apparently causes some broken clients to
3388 timeout.
3389
339013. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
3391 unchanged) from the Cygwin maintainer.
3392
339314. The code for -bV that shows what is in the binary showed "mbx" when maildir
3394 was supported instead of testing for mbx. Effectively a typo.
3395
339615. The spa authenticator server code was not checking that the input it
3397 received was valid base64.
3398
339916. The debug output line for the "set" modifier in ACLs was not showing the
3400 name of the variable that was being set.
3401
340217. Code tidy: the variable type "vtype_string" was never used. Removed it.
3403
340418. Previously, a reference to $sender_host_name did not cause a DNS reverse
3405 lookup on its own. Something else was needed to trigger the lookup. For
3406 example, a match in host_lookup or the need for a host name in a host list.
3407 Now, if $sender_host_name is referenced and the host name has not yet been
3408 looked up, a lookup is performed. If the lookup fails, the variable remains
3409 empty, and $host_lookup_failed is set to "1".
3410
341119. Added "eqi" as a case-independent comparison operator.
3412
341320. The saslauthd authentication condition could segfault if neither service
3414 nor realm was specified.
3415
341621. If an overflowing value such as "2048M" was set for message_size_limit, the
3417 error message that was logged was misleading, and incoming SMTP
3418 connections were dropped. The message is now more accurate, and temporary
3419 errors are given to SMTP connections.
3420
342122. In some error situations (such as 21 above) Exim rejects all SMTP commands
3422 (except RSET) with a 421 error, until QUIT is received. However, it was
3423 failing to send a response to QUIT.
3424
342523. The HELO ACL was being run before the code for helo_try_verify_hosts,
3426 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
3427 ACL is now run after the helo_try_verify_hosts code.
3428
342924. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
3430 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
3431 case-independent, so other case variants are also recognized). Apparently
3432 some systems use these upper case variants.
3433
343425. If more than two messages were waiting for the same host, and a transport
3435 filter was specified for the transport, Exim sent two messages over the
3436 same TCP/IP connection, and then failed with "socket operation on non-
3437 socket" when it tried to send the third.
3438
343926. Added Exim::debug_write and Exim::log_write for embedded Perl use.
3440
344127. The extern definition of crypt16() in expand.c was not being excluded when
3442 the OS had its own crypt16() function.
3443
344428. Added bounce_return_body as a new option, and bounce_return_size_limit
3445 as a preferred synonym for return_size_limit, both as an option and as an
3446 expansion variable.
3447
344829. Added LIBS=-liconv to OS/Makefile-OSF1.
3449
345030. Changed the default configuration ACL to relax the local part checking rule
3451 for addresses that are not in any local domains. For these addresses,
3452 slashes and pipe symbols are allowed within local parts, but the sequence
3453 /../ is explicitly forbidden.
3454
345531. SPA server authentication was not clearing the challenge buffer before
3456 using it.
3457
345832. log_message in a "warn" ACL statement was writing to the reject log as
3459 well as to the main log, which contradicts the documentation and doesn't
3460 seem right (because no rejection is happening). So I have stopped it.
3461
346233. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
3463 However, I am unable to do any testing of this.
3464
346534. Fixed an infelicity in the appendfile transport. When checking directories
3466 for a mailbox, to see if any needed to be created, it was accidentally
3467 using path names with one or more superfluous leading slashes; tracing
3468 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
3469
347035. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
3471 contents are added to the log line that is written for every discarded
3472 recipient. (Previously a log_message setting was ignored.)
3473
347436. The ${quote: operator now quotes the string if it is empty.
3475
347637. The install script runs exim in order to find its version number. If for
3477 some reason other than non-existence or emptiness, which it checks, it
3478 could not run './exim', it was installing it with an empty version number,
3479 i.e. as "exim-". This error state is now caught, and the installation is
3480 aborted.
3481
348238. An argument was missing from the function that creates an error message
3483 when Exim fails to connect to the socket for saslauthd authentication.
3484 This could cause Exim to crash, or give a corrupted message.
3485
348639. Added isip, isip4, and isip6 to ${if conditions.
3487
348840. The ACL variables $acl_xx are now saved with the message, and can be
3489 accessed later in routers, transports, and filters.
3490
349141. The new lookup type nwildlsearch is like wildlsearch, except that the key
3492 strings in the file are not string-expanded.
3493
349442. If a MAIL command specified a SIZE value that was too large to fit into an
3495 int variable, the check against message_size_limit failed. Such values are
3496 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
3497 day this will have to be increased, but I don't think I want to be around
3498 when emails are that large.
3499
3500
3501
3502Exim version 4.22
3503-----------------
3504
3505 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
3506 iconv() is not standard in FreeBSD.
3507
3508 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with
3509 IPv6 enabled. The observed symptom was a segmentation fault on return from
3510 the function os_common_find_running_interfaces() in src/os.c.
3511
3512 3. In the check_special_case() function in daemon.c I had used "errno" as an
3513 argument name, which causes warnings on some systems. This was basically a
3514 typo, since it was named "eno" in the comments!
3515
3516 4. The code that waits for the clock to tick (at a resolution of some fraction
3517 of a second) so as to ensure message-id uniqueness was always waiting for
3518 at least one whole tick, when it could have waited for less. [This is
3519 almost certainly not relevant at current processor speeds, where it is
3520 unlikely to ever wait at all. But we try to future-proof.]
3521
3522 5. The function that sleeps for a time interval that includes fractions of a
3523 second contained a race. It did not block SIGALRM between setting the
3524 timer, and suspending (a couple of lines later). If the interval was short
3525 and the sigsuspend() was delayed until after it had expired, the suspension
3526 never ended. On busy systems this could lead to processes getting stuck for
3527 ever.
3528
3529 6. Some uncommon configurations may cause a lookup to happen in a queue runner
3530 process, before it forks any delivery processes. The open lookup caching
3531 mechanism meant that the open file or database connection was passed into
3532 the delivery process. The problem was that delivery processes always tidy
3533 up cached lookup data. This could cause a problem for the next delivery
3534 process started by the queue runner, because the external queue runner
3535 process does not know about the closure. So the next delivery process
3536 still has data in the lookup cache. In the case of a file lookup, there was
3537 no problem because closing a file descriptor in a subprocess doesn't affect
3538 the parent. However, if the lookup was caching a connection to a database,
3539 the connection was closed, and the second delivery process was likely to
3540 see errors such as "PGSQL: query failed: server closed the connection
3541 unexpectedly". The problem has been fixed by closing all cached lookups
3542 in a queue runner before running a delivery process.
3543
3544 7. Compiler warning on Linux for the second argument of iconv(), which doesn't
3545 seem to have the "const" qualifier which it has on other OS. I've
3546 parameterised it.
3547
3548 8. Change 4.21/2 was too strict. It is only if there are two authenticators
3549 *of the same type* (client or server) with the same public name that an
3550 error should be diagnosed.
3551
3552 9. When Exim looked up a host name for an IP address, but failed to find the
3553 original IP address when looking up the host name (a safety check), it
3554 output the message "<ip address> does not match any IP for NULL", which was
3555 confusing, to say the least. The bug was that the host name should have
3556 appeared instead of "NULL".
3557
355810. Since release 3.03, if Exim is called by a uid other than root or the Exim
3559 user that is built into the binary, and the -C or -D options is used, root
3560 privilege is dropped before the configuration file is read. In addition,
3561 logging is switched to stderr instead of the normal log files. If the
3562 configuration then re-defines the Exim user, the unprivileged environment
3563 is probably not what is expected, so Exim logs a panic warning message (but
3564 proceeds).
3565
3566 However, if deliver_drop_privilege is set, the unprivileged state may well
3567 be exactly what is intended, so the warning has been cut out in that case,
3568 and Exim is allowed to try to write to its normal log files.
3569
3570
3571Exim version 4.21
3572-----------------
3573
3574 1. smtp_return_error_details was not giving details for temporary sender
3575 or receiver verification errors.
3576
3577 2. Diagnose a configuration error if two authenticators have the same public
3578 name.
3579
3580 3. Exim used not to create the message log file for a message until the first
3581 delivery attempt. This could be confusing when incoming messages were held
3582 for policy or load reasons. The message log file is now created at the time
3583 the message is received, and an initial "Received" line is written to it.
3584
3585 4. The automatically generated man page for command line options had a minor
3586 bug that caused no ill effects; however, a more serious problem was that
3587 the procedure for building the man page automatically didn't always
3588 operate. Consequently, release 4.20 contains an out-of-date version. This
3589 shouldn't happen again.
3590
3591 5. When building Exim with embedded Perl support, the script that builds the
3592 Makefile was calling 'perl' to find its compile-time parameters, ignoring
3593 any setting of PERL_COMMAND in Local/Makefile. This is now fixed.
3594
3595 6. The freeze_tell option was not being used for messages that were frozen on
3596 arrival, either by an ACL or by local_scan().
3597
3598 7. Added the smtp_incomplete_transaction log selector.
3599
3600 8. After STARTTLS, Exim was not forgetting that it had advertised AUTH, so it
3601 was accepting AUTH without a new EHLO.
3602
3603 9. Added tls_remember_esmtp to cope with YAEB. This allows AUTH and other
3604 ESMTP extensions after STARTTLS without a new EHLO, in contravention of the
3605 RFC.
3606
360710. Logging of TCP/IP connections (when configured) now happens in the main
3608 daemon process instead of the child process, so that the TCP/IP connection
3609 count is more accurate (but it can never be perfect).
3610
361111. The use of "drop" in a nested ACL was not being handled correctly in the
3612 outer ACL. Now, if condition failure induced by the nested "drop" causes
3613 the outer ACL verb to deny access ("accept" or "discard" after "endpass",
3614 or "require"), the connection is dropped.
3615
361612. Similarly, "discard" in a nested ACL wasn't being handled. A nested ACL
3617 that yield "discard" can now be used with an "accept" or a "discard" verb,
3618 but an error is generated for any others (because I can't see a useful way
3619 to define what should happen).
3620
362113. When an ACL is read dynamically from a file (or anywhere else), the lines
3622 are now processed in the same way as lines in the Exim configuration file.
3623 In particular, continuation lines are supported.
3624
362514. Added the "dnslists = a.b.c!=n.n.n.n" feature.
3626
362715. Added -ti meaning -t -i.
3628
362916. Check for letters, digits, hyphens, and dots in the names of dnslist
3630 domains, and warn by logging if others are found.
3631
363217. At least on BSD, alignment is not guarenteed for the array of ifreq's
3633 returned from GIFCONF when Exim is trying to find the list of interfaces on
3634 a host. The code in os.c has been modified to copy each ifreq to an aligned
3635 structure in all cases.
3636
3637 Also, in some cases, the returned ifreq's were being copied to a 'struct
3638 ifreq' on the stack, which was subsequently passed to host_ntoa(). That
3639 means the last couple of bytes of an IPv6 address could be chopped if the
3640 ifreq contained only a normal sockaddr (14 bytes storage).
3641
364218. Named domain lists were not supported in the hosts_treat_as_local option.
3643 An entry such as +xxxx was not recognized, and was treated as a literal
3644 domain name.
3645
364619. Ensure that header lines added by a DATA ACL are included in the reject log
3647 if the ACL subsequently rejects the message.
3648
364920. Upgrade the cramtest.pl utility script to use Digest::MD5 instead of just
3650 MD5 (which is deprecated).
3651
365221. When testing a filter file using -bf, Exim was writing a message when it
3653 took the sender from a "From " line in the message, but it was not doing so
3654 when it took $return_path from a Return-Path: header line. It now does.
3655
365622. If the contents of a "message" modifier for a "warn" ACL verb do not begin
3657 with a valid header line field name (a series of printing characters
3658 terminated by a colon, Exim now inserts X-ACL-Warn: at the beginning.
3659