Small patch from the Sieve maintainer.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
bfad5236 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.347 2006/04/25 10:44:57 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
bfad5236
PH
43PH/08 Applied small patch from the Sieve maintainer.
44
1cce3af8 45
214e2000
PH
46Exim version 4.61
47-----------------
48
49PH/01 The code for finding all the local interface addresses on a FreeBSD
50 system running IPv6 was broken. This may well have applied to all BSD
51 systems, as well as to others that have similar system calls. The broken
52 code found IPv4 interfaces correctly, but gave incorrect values for the
53 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
54 that it would not match correctly against @[] and not recognize the IPv6
55 addresses as local.
56
f9daeae0
PH
57PH/02 The ipliteral router was not recognizing addresses of the form user@
58 [ipv6:....] because it didn't know about the "ipv6:" prefix.
59
7e66e54d
PH
60PH/03 Added disable_ipv6.
61
c8ea1597
PH
62PH/04 Changed $reply_address to use the raw form of the headers instead of the
63 decoded form, because it is most often used to construct To: headers
64 lines in autoreplies, and the decoded form may well be syntactically
65 invalid. However, $reply_address has leading white space removed, and all
66 newlines turned into spaces so that the autoreply transport does not
67 grumble.
68
911f6fde
PH
69PH/05 If group was specified without a user on a router, and no group or user
70 was specified on a transport, the group from the router was ignored.
71
47ca6d6c
PH
72PH/06 Increased the number of ACL variables to 20 of each type, and arranged
73 for visible compile-time settings that can be used to change these
74 numbers, for those that want even more. Backwards compatibility with old
75 spool files has been maintained. However, going back to a previous Exim
76 release will lost any variables that are in spool files.
77
ed0e9820
PH
78PH/07 Two small changes when running in the test harness: increase delay when
79 passing a TCP/IP connection to a new process, in case the original
80 process has to generate a bounce, and remove special handling of
81 127.0.0.2 (sic), which is no longer necessary.
82
eff37e47
PH
83PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
84 be the same on different OS.
85
1921d2ea
PH
86PH/09 Moved a debug statement in filter processing to avoid a race problem when
87 testing.
88
b3f69ca8
JJ
89JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
90 whether --show-vars was specified or not
91
92JJ/02 exipick: Added support for new ACL variable spool format introduced
93 in 4.61-PH/06
94
424a1c63
PH
95PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
96 syntactically invalid From: or Reply-to: line, and a filter used this to
97 generate an autoreply, and therefore failed to obtain an address for the
98 autoreply, Exim could try to deliver to a non-existent relative file
99 name, causing unrelated and misleading errors. What now happens is that
100 it logs this as a hard delivery error, but does not attempt to create a
101 bounce message.
102
7a100415
PH
103PH/11 The exinext utility has a -C option for testing purposes, but although
104 the given file was scanned by exinext itself; it wasn't being passed on
105 when Exim was called.
106
19b9dc85
PH
107PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
108 an end-of-file indication when reading a command response.
109
309bd837
PH
110PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
111 compiled. In many other places in Exim, IPv6 addresses are always
112 recognized, so I have changed this. It also means that IPv4 domain
113 literals of the form [IPV4:n.n.n.n] are now always recognized.
114
59e82a2a
PH
115PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
116 used if the router is not running as root, for example, when verifying at
117 ACL time, or when using -bh. The debugging output from this situation was
118 non-existent - all you got was a failure to exec. I have made two
119 changes:
120
121 (a) Failures to set uid/gid, the current directory, or a process leader
122 in a subprocess such as that created by queryprogram now generate
123 suitable debugging ouput when -d is set.
124
125 (b) The queryprogram router detects when it is not running as root,
126 outputs suitable debugging information if -d is set, and then runs
127 the subprocess without attempting to change uid/gid.
128
9edc04ce
PH
129PH/15 Minor change to Makefile for building test_host (undocumented testing
130 feature).
131
1349e1e5
PH
132PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
133 additional section of a DNS packet that returns MX or SRV records.
134 Instead, it always explicitly searches for A/AAAA records. This avoids
135 major problems that occur when a DNS server includes only records of one
136 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
137 fixed another bug: if SRV records were looked up and the corresponding
138 address records were *not* found in the additional section, the port
139 values from the SRV records were lost.
140
ea49d0e1
PH
141PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
142 using the correct key (the original address) when searching the retry
143 rules in order to find which one to use for generating the retry hint.
144
064a94c9
PH
145PH/18 If quota_warn_message contains a From: header, Exim now refrains from
146 adding the default one. Similarly, if it contains a Reply-To: header, the
147 errors_reply_to option, if set, is not used.
148
727071f8
PH
149PH/19 When calculating a retry time, Exim used to measure the "time since
150 failure" by looking at the "first failed" field in the retry record. Now
151 it does not use this if it is later than than the arrival time of the
152 message. Instead it uses the arrival time. This makes for better
153 behaviour in cases where some deliveries succeed, thus re-setting the
154 "first failed" field. An example is a quota failure for a huge message
155 when small messages continue to be delivered. Without this change, the
156 "time since failure" will always be short, possible causing more frequent
157 delivery attempts for the huge message than are intended.
dd16e114 158 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 159
f78eb7c6
PH
160PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
161 $1, $2, $3) because the numerical variables can be reset during some
162 expansion items (e.g. "match"), thereby losing the authentication data.
163
21c28500
PH
164PH/21 Make -bV show the size of off_t variables so that the test suite can
165 decide whether to run tests for quotas > 2G.
166
167PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
168 mailbox_size, and mailbox_filecount in the appendfile transport. If a
169 filecount value is greater than 2G or if a quota value is greater than 2G
170 on a system where the size of off_t is not greater than 4, a panic error
171 is given.
172
1688f43b
PH
173PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
174 never match. The debug and -bh output now contains an explicit error
175 message indicating a malformed IPv4 address or mask.
176
177PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
178 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
179 PH/23 above applies.
180
9675b384
PH
181PH/25 Do not write to syslog when running in the test harness. The only
182 occasion when this arises is a failure to open the main or panic logs
183 (for which there is an explicit test).
184
6a3f1455
PH
185PH/26 Added the /no_tell option to "control=freeze".
186
dac79d3e
PH
187PH/27 If a host name lookup failed very early in a connection, for example, if
188 the IP address matched host_lookup and the reverse lookup yielded a name
189 that did not have a forward lookup, an error message of the form "no IP
190 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
191 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 192
5977a0b3
PH
193PH/28 An enabling patch from MH: add new function child_open_exim2() which
194 allows the sender and the authenticated sender to be set when
195 submitting a message from within Exim. Since child_open_exim() is
196 documented for local_scan(), the new function should be too.
197
c91535f3
PH
198PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
199 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
200 results in an empty string is now treated as unset.
201
0d46a8c8
PH
202PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
203
278c6e6c
PH
204PH/31 Added sender_verify_fail logging option.
205
2cbb4081
PH
206PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
207 needed by RFC 822 but not by RFC 2822 was commented out. I have now
208 tidied the source and removed it altogether.
209
3eef829e
PH
210PH/33 When a queue run was abandoned because the load average was too high, a
211 log line was always written; now it is written only if the queue_run log
212 selector is set. In addition, the log line for abandonment now contains
213 information about the queue run such as the pid. This is always present
214 in "start" and "stop" lines but was omitted from the "abandon" line.
215
1ab95fa6
PH
216PH/34 Omit spaces between a header name and the colon in the error message that
217 is given when verify = headers_syntax fails (if there are lots of them,
218 the message gets confusing).
219
230205fc
PH
220PH/35 Change the default for dns_check_names_pattern to allow slashes within
221 names, as there are now some PTR records that contain slashes. This check
222 is only to protect against broken name servers that fall over on strange
223 characters, so the fact that it applies to all lookups doesn't matter.
224
75e0e026
PH
225PH/36 Now that the new test suite is complete, we can remove some of the
226 special code in Exim that was needed for the old test suite. For example,
227 sorting DNS records because real resolvers return them in an arbitrary
228 order. The new test suite's fake resolver always returns records in the
229 same order.
230
231PH/37 When running in the test harness, use -odi for submitted messages (e.g.
232 bounces) except when queue_only is set, to avoid logging races between
233 the different processes.
234
145396a6
PH
235PH/38 Panic-die if .include specifies a non-absolute path.
236
3cd34f13
PH
237PH/39 A tweak to the "H" retry rule from its user.
238
11121d3d
JJ
239JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
240 a label. They prevented compilation on older perls.
241
242JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
243 a warning to be raised on newish perls.
244
245JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
246 on queue. Changes to match documented behaviour of showing count of
247 messages matching specified criteria.
248
8def5aaf
PH
249PH/40 Changed the default ident timeout from 30s to 5s.
250
929ba01c
PH
251PH/41 Added support for the use of login_cap features, on those BSD systems
252 that have them, for controlling the resources used by pipe deliveries.
253
2632889e
PH
254PH/42 The content-scanning code uses fopen() to create files in which to put
255 message data. Previously it was not paying any attention to the mode of
256 the files. Exim runs with umask(0) because the rest of the code creates
257 files with open(), and sets the required mode explicitly. Thus, these
258 files were ending up world-writeable. This was not a big issue, because,
259 being within the spool directory, they were not world-accessible. I have
260 created a function called modefopen, which takes an additional mode
261 argument. It sets umask(777), creates the file, chmods it to the required
262 mode, then resets the umask. All the relevant calls to fopen() in the
263 content scanning code have been changed to use this function.
264
944a9c55
PH
265PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
266 to 24 hours. This avoids potential overflow problems when processing G
267 and H retry rules. I suspect nobody ever tinkers with this value.
268
4a23603b
PH
269PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
270
4730f942
PH
271PH/45 When the plaintext authenticator is running as a client, the server's
272 challenges are checked to ensure they are valid base64 strings. By
273 default, the authentication attempt is cancelled if an invalid string is
274 received. Setting client_ignore_invalid_base64 true ignores these errors.
275 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
276 they are received. Thus, the responses can be made to depend on the
277 challenges. If an invalid string is ignored, an empty string is placed in
278 the variable.
279
30dba1e6
PH
280PH/46 Messages that are created by the autoreply transport now contains a
281 References: header, in accordance with RFCs 2822 and 3834.
282
382afc6b
PH
283PH/47 Added authenticated_sender_force to the smtp transport.
284
a86229cf
PH
285PH/48 The ${prvs expansion was broken on systems where time_t was long long.
286
50c99ba6
PH
287PH/49 Installed latest patch from the Sieve maintainer.
288
d35e429d
PH
289PH/50 When an Exim quota was set without a file count quota, and mailbox_size
290 was also set, the appendfile transport was unnecessarily scanning a
291 directory of message files (e.g. for maildir delivery) to find the count
292 of files (along with the size), even though it did not need this
293 information. It now does the scan only if it needs to find either the
294 size of the count of files.
295
f90d018c
PH
296PH/51 Added ${time_eval: to convert Exim time strings into seconds.
297
75def545
PH
298PH/52 Two bugs concerned with error handling when the smtp transport is
299 used in LMTP mode:
300
301 (i) Exim was not creating retry information for temporary errors given
302 for individual recipients after the DATA command when the smtp transport
303 was used in LMTP mode. This meant that they could be retried too
304 frequently, and not timed out correctly.
305
306 (ii) Exim was setting the flag that allows error details to be returned
307 for LMTP errors on RCPT commands, but not for LMTP errors for individual
308 recipients that were returned after the DATA command.
309
310PH/53 This is related to PH/52, but is more general: for any failing address,
311 when detailed error information was permitted to be returned to the
312 sender, but the error was temporary, then after the final timeout, only
313 "retry timeout exceeded" was returned. Now it returns the full error as
314 well as "retry timeout exceeded".
315
c46782ef
PH
316PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
317 do this, and (what is worse) MTAs that accept it.
318
71fafd95
PH
319PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
320 will now be deprecated.
321
2c5db4fd
PH
322PH/56 New os.c-cygwin from the Cygwin maintainer.
323
9cf6b11a
JJ
324JJ/06 exipick: added --unsorted option to allow unsorted output in all output
325 formats (previously only available in exim formats via -bpr, -bpru,
326 and -bpra. Now also available in native and exiqgrep formats)
327
328JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
329 with very large, slow to parse queues
330
331JJ/08 exipick: added ! as generic prefix to negate any criteria format
332
333JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
334
898d150f
PH
335PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
336 responses to authentication challenges, though it was showing the
337 challenges; (ii) I've removed the CR characters from the debug output for
338 SMTP output lines.
339
46218253
PH
340PH/58 Allow for the insertion of a newline as well as a space when a string
341 is turned into more than one encoded-word during RFC 2047 encoding. The
342 Sieve code now uses this.
343
e97957bc
PH
344PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
345 data_4xx, lost_connection, tls_required.
346
81e509d7
PH
347PH/60 When a VRFY deferred or FAILED, the log message rather than the user
348 message was being sent as an SMTP response.
349
3d240ff7
PH
350PH/61 Add -l and -k options to exicyclog.
351
b37c4101
PH
352PH/62 When verifying, if an address was redirected to one new address, so that
353 verification continued, and the new address failed or deferred after
354 having set something in $address_data, the value of $address_data was not
355 passed back to the ACL. This was different to the case when no
356 redirection occurred. The value is now passed back in both cases.
357
79378e0f
PH
358PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
359 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
360 use login_cap.h, so on its own it isn't the distinguishing feature. The
361 new name refers directly to the setclassresources() function.
362
e49c7bb4
PH
363PH/65 Added configuration files for NetBSD3.
364
d114ec46
PH
365PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
366
f3d7df6c
PH
367PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
368 is preferred over IPv4.
369
715ab376
PH
370PH/68 The bounce_return_message and bounce_return_body options were not being
371 honoured for bounces generated during the reception of non-SMTP messages.
372 In particular, this applied to messages rejected by the ACL. This bug has
373 been fixed. However, if bounce_return_message is true and bounce_return_
374 body is false, the headers that are returned for a non-SMTP message
375 include only those that have been read before the error was detected.
376 (In the case of an ACL rejection, they have all been read.)
377
6b31b150
PH
378PH/69 The HTML version of the specification is now built in a directory called
379 spec_html instead of spec.html, because the latter looks like a path with
380 a MIME-type, and this confuses some software.
381
382PH/70 Catch two compiler warnings in sieve.c.
383
d515a917
PH
384PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
385 function verify_get_ident() calls ip_connect() to connect a socket, but
386 if the "connect()" function timed out, ip_connect() used to close the
387 socket. However, verify_get_ident() also closes the socket later, and in
388 between Exim writes to the log, which may get opened at this point. When
389 the socket was closed in ip_connect(), the log could get the same file
390 descriptor number as the socket. This naturally causes chaos. The fix is
391 not to close the socket in ip_connect(); the socket should be closed by
392 the function that creates it. There was only one place in the code where
393 this was missing, in the iplookup router, which I don't think anybody now
394 uses, but I've fixed it anyway.
395
9b8fadde
PH
396PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
397 well as to direct DNS lookups. Otherwise the handling of names in host
398 lists is inconsistent and therefore confusing.
399
214e2000 400
5de37277
PH
401Exim version 4.60
402-----------------
403
cc38ddbf
PH
404PH/01 Two changes to the default runtime configuration:
405
406 (1) Move the checks for relay_from_hosts and authenticated clients from
407 after to before the (commented out) DNS black list checks.
408
409 (2) Add control=submission to the relay_from_hosts and authenticated
410 clients checks, on the grounds that messages accepted by these
411 statements are most likely to be submissions.
5de37277 412
72fdd6ae
PH
413PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
414
415 (1) Generate an error if the third argument for the ${prvs expansion is
416 not a single digit.
417
418 (2) Treat a missing third argument of ${prvscheck as if it were an empty
419 string.
420
421 (3) Reset the variables that are obtained from the first argument of
422 ${prvscheck and used in the second argument before leaving the code,
423 because their memory is reclaimed, so using them afterwards may do
424 silly things.
425
426 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
427 one (it's much easier than Tom thought :-).
428
429 (5) Because of (4), we can now allow for the use of $prvscheck_result
430 inside the third argument.
cb9328de 431
cb741023
PH
432PH/03 For some reason, the default setting of PATH when running a command from
433 a pipe transport was just "/usr/bin". I have changed it to
434 "/bin:/usr/bin".
435
f174f16e
PH
436PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
437 anything to be listed in the output from -bV.
b2f5a032 438
c25242d7
PH
439PH/05 When a filter generated an autoreply, the entire To: header line was
440 quoted in the delivery log line, like this:
441
442 => >A.N.Other <ano@some.domain> <original@ddress> ...
443
444 This has been changed so that it extracts the operative address. There
445 may be more than one such address. If so, they are comma-separated, like
446 this:
447
448 => >ano@some.domain,ona@other.domain <original@ddress> ...
449
82c19f95
PH
450PH/06 When a client host used a correct literal IP address in a HELO or EHLO
451 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
452 not being looked up in the rDNS to get a host name, Exim was showing the
453 IP address twice in Received: lines, even though the IP addresses were
454 identical. For example:
455
456 Received: from [1.2.3.4] (helo=[1.2.3.4])
457
458 However, if the real host name was known, it was omitting the HELO data
459 if it matched the actual IP address. This has been tidied up so that it
460 doesn't show the same IP address twice.
461
d7ffbc12
PH
462PH/07 When both +timestamp and +memory debugging was on, the value given by
463 $tod_xxx expansions could be wrong, because the tod_stamp() function was
464 called by the debug printing, thereby overwriting the timestamp buffer.
465 Debugging no longer uses the tod_stamp() function when +timestamp is set.
466
9f526266
PH
467PH/08 When the original message was included in an autoreply transport, it
468 always said "this is a copy of the message, including all the headers",
469 even if body_only or headers_only was set. It now gives an appropriate
470 message.
471
87fcc8b9
PH
472PH/09 Applied a patch from the Sieve maintainer which:
473
474 o fixes some comments
475 o adds the (disabled) notify extension core
476 o adds some debug output for the result of if/elsif tests
477 o points to the current vacation draft in the documentation
478 and documents the missing references header update
479
480 and most important:
481
482 o fixes a bug in processing the envelope test (when testing
483 multiple envelope elements, the last element determinted the
484 result)
485
456682f5
PH
486PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
487 Electronic Mail") by including:
488
489 Auto-submitted: auto-generated
490
491 in the messages that it generates (bounce messages and others, such as
492 warnings). In the case of bounce messages for non-SMTP mesages, there was
493 also a typo: it was using "Auto_submitted" (underscore instead of
494 hyphen). Since every message generated by Exim is necessarily in response
495 to another message, thes have all been changed to:
496
497 Auto-Submitted: auto-replied
498
499 in accordance with these statements in the RFC:
500
501 The auto-replied keyword:
502
503 - SHOULD be used on messages sent in direct response to another
504 message by an automatic process,
505
506 - MUST NOT be used on manually-generated messages,
507
508 - MAY be used on Delivery Status Notifications (DSNs) and Message
509 Disposition Notifications (MDNs),
510
511 - MUST NOT be used on messages generated by automatic or periodic
512 processes, except for messages which are automatic responses to
513 other messages.
514
3e46c1aa
PH
515PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
516 to the default Received: header definition.
456682f5 517
49826d12
PH
518PH/12 Added log selector acl_warn_skipped (default on).
519
eba0c039
PH
520PH/13 After a successful wildlsearch lookup, discard the values of numeric
521 variables because (a) they are in the wrong storage pool and (b) even if
522 they were copied, it wouldn't work properly because of the caching.
523
a0d6ba8a
PH
524PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
525 checking when decoding. Apparently there are clients that generate
526 overlong encoded strings. Why am I not surprised?
527
f0917727
PH
528PH/15 If the first argument of "${if match_address" was not empty, but did not
529 contain an "@" character, Exim crashed. Now it writes a panic log message
530 and treats the condition as false.
531
096fee00
PH
532PH/16 In autoreply, treat an empty string for "once" the same as unset.
533
024bd3c2
PH
534PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
535 extension "envelope-auth". The code is finished and in agreement with
536 other implementations, but there is no documentation so far and in fact,
537 nobody wrote the draft yet. This extension is currently #undef'ed, thus
538 not changing the active code.
539
540 Print executed "if" and "elsif" statements when debugging is used. This
541 helps a great deal to understand what a filter does.
542
543 Document more things not specified clearly in RFC3028. I had all this
544 sorted out, when out of a sudden new issues came to my mind. Oops."
545
df199fec
PH
546PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
547 (Bugzilla #53).
548
d27f1df3
PH
549PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
550 canonical form (as documented). However, after a host name lookup from
551 the IP address, check_host() was doing a simple string comparison with
552 addresses acquired from the DNS when checking that the found name did
553 have the original IP as one of its addresses. Since any found IPv6
554 addresses are likely to be in abbreviated form, the comparison could
555 fail. Luckily, there already exists a function for doing the comparison
556 by converting both addresses to binary, so now that is used instead of
557 the text comparison.
558
96776534
PH
559PH/20 There was another similar case to PH/19, when a complete host name was
560 given in a host list; looking up its IP address could give an abbreviated
561 form, whereas the current host's name might or might not be abbreviated.
562 The same fix has been applied.
563
5de37277 564
9a799bc0
PH
565Exim version 4.54
566-----------------
567
568PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
569 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
570 It now does.
571
99a4b039
PH
572PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
573 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
574
575PH/03 Typo: missing ".o" in src/pcre/Makefile.
576
4b233853
PH
577PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
578 header line, restrict the check to what is listed in RFCs 2369 and 2929.
579 Also, for "Auto-Submitted", treat anything other than "no" as
580 non-personal, in accordance with RFC 3834. (Previously it treated
581 anything starting "auto-" as non-personal.)
582
8857ccfd
PH
583TF/01 The control=submission/name=... option had a problem with syntax
584 errors if the name included a slash character. The /name= option
585 now slurps the rest of the string, so it can include any characters
586 but it must come last in the list of options (after /sender_retain
587 or /domain=).
588
433a2980
PH
589PH/05 Some modifications to the interface to the fake nameserver for the new
590 testing suite.
591
3e46c1aa 592
9a799bc0 593
e3a311ba
TK
594Exim version 4.53
595-----------------
596
597TK/01 Added the "success_on_redirect" address verification option. See
598 NewStuff for rationale and an example.
599
13b685f9
PH
600PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
601
395ff96d
PH
602PH/02 Patch to exigrep to allow it to work on syslog lines.
603
5b68f6e4
PH
604PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
605 fread() to skip over the body file's header line, because in Cygwin the
606 header line is locked and is inaccessible.
607
1ab52c69
PH
608PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
609 co-exist for some time) to make it clear that it is the Exim ID that is
610 referenced, not the Message-ID: header line.
611
b07e6aa3
PH
612PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
613 string_format() function, because snprintf() does not exist on all
614 operating systems.
615
254e032f
PH
616PH/06 The use of forbid_filter_existstest now also locks out the use of the
617 ${stat: expansion item.
618
3af76a81
PH
619PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
620 protocol synchronization error", to keep the pedants happy.
621
2548ba04
PH
622PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
623 well as for IRIX systems, when gcc is being used. See the host.c source
624 file for comments.
625
b6c6011d
PH
626PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
627
cf39cf57
PH
628PH/10 Named domain lists were not working if used in a queue_smtp_domains
629 setting.
630
f1513293
PH
631PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
632 transport and to the smtp transport in LMTP mode.
633
727549a4
PH
634TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
635
af46795e
PH
636PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
637 run a filter in a subprocess. This could lead to confusion in subsequent
638 lookups in the parent process. There should also be a search_tidyup() at
639 the end of the subprocess.
640
d7b47fd0
PH
641PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
642 only if the host matched helo_try_verify_hosts, which caused the
643 verification to occur when the EHLO/HELO command was issued. The ACL just
644 tested the remembered result. Now, if a previous verification attempt has
645 not happened, "verify = helo" does it there and then.
646
ee744174
JJ
647JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
648
b582ab87
PH
649TK/03 Fix log output including CR from clamd.
650
41a13e0a
PH
651PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
652 exist provoked a memory error which could cause a segfault.
653
f625cc5a
PH
654PH/15 Installed PCRE 6.2
655
656PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
657
21f7af35
PH
658PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
659 of the problem. Specifically, suggested +O2 rather than +O1 for the
660 HP-UX compiler.
661
31480e42
PH
662PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
663
2d280592
PH
664PH/20 If a delivery was routed to a non-standard port by means of an SRV
665 record, the port was not correctly logged when the outgoing_port log
666 selector was set (it logged the transort's default port).
667
7cd1141b
PH
668PH/21 Added support for host-specific ports to manualroute, queryprogram,
669 fallback_hosts, and "hosts" in the smtp transport.
670
671PH/22 If the log selector "outgoing_port" is set, the port is now also given on
672 host errors such as "Connection refused".
673
750af86e
PH
674PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
675 authentication with radiusclient 0.4.9:
676
677 - Error returned from rc_read_config was caught wrongly
678 - Username/password not passed on to radius server due to wrong length.
679
680 The presumption is that some radiusclient API changes for 4.51/PH/17
681 were not taken care of correctly. The code is still untested by me (my
682 Linux distribution still has 0.3.2 of radiusclient), but it was
683 contributed by a Radius user.
684
685PH/24 When doing a callout, the value of $domain wasn't set correctly when
686 expanding the "port" option of the smtp transport.
687
4304270b
TK
688TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
689 while reading a MIME header. Thanks to Tom Hughes for a patch.
690
750af86e
PH
691PH/24 Include config.h inside local_scan.h so that configuration settings are
692 available.
693
64ffc24f
PH
694PH/25 Make $smtp_command_argument available after all SMTP commands. This means
695 that in an ACL for RCPT (for example), you can examine exactly what was
696 received.
697
5dd9625b
PH
698PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
699 commands, but it was not correctly comparing the address with the actual
700 client host address. Thus, it would show the EHLO address in Received:
701 header lines when this was not necessary.
702
5591031b
PH
703PH/27 Added the % operator to ${eval:}.
704
ba18e66a
PH
705PH/28 Exim tries to create and chdir to its spool directory when it starts;
706 it should be ignoring failures (because with -C, for example, it has lost
707 privilege). It wasn't ignoring creation failures other than "already
708 exists".
709
9cec981f
PH
710PH/29 Added "crypteq" to the list of supported features that Exim outputs when
711 -bV or -d is used.
712
aa2b5c79
PH
713PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
714 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
715 too many continuations, the temporary file was not being removed, and the
716 return code was incorrect.
aa2b5c79 717
48a53b7f
PH
718PH/31 Missing "BOOL" in function definition in filtertest.c.
719
1c59d63b
PH
720PH/32 Applied Sieve patches from the maintainer.
721
671012da
TK
722TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
723
1509d3a8
PH
724PH/33 Added "verify = not_blind".
725
726PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
727 Local/Makefile (with some defaults set). These are used in built scripts
728 such as exicyclog, but they have never been used in the exim_install
729 script (though there are many overriding facilities there). I have
730 arranged that the exim_install script now takes note of these two
731 settings.
732
733PH/35 Installed configuration files for Dragonfly.
734
2fe1a124
PH
735PH/36 When a locally submitted message by a trusted user did not contain a
736 From: header, and the sender address was obtained from -f or from an SMTP
737 MAIL command, and the trusted user did not use -F to supply a sender
738 name, $originator_name was incorrectly used when constructing a From:
739 header. Furthermore, $originator_name was used for submission mode
740 messages from external hosts without From: headers in a similar way,
741 which is clearly wrong.
742
8800895a
PH
743PH/37 Added control=suppress_local_fixups.
744
ccfdb010
PH
745PH/38 When log_selector = +received_sender was set, and the addition of the
746 sender made the log line's construction buffer exactly full, or one byte
747 less than full, an overflow happened when the terminating "\n" was
748 subsequently added.
749
1130bfb0
PH
750PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
751 when the result of a list match is failure because a DNS lookup failed.
752
ebcb507f
PH
753PH/40 RM_COMMAND is now used in the building process.
754
c35e155c
PH
755PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
756 the "build-* directories that it finds.
757
95d1f782
PH
758PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
759 address in a domain literal was a prefix of an interface address.
760
fd6de02e
PH
761PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
762 when verifying a sender address, unless rewrite_headers is false.
763
58de37c5
PH
764PH/44 Wrote a long comment about why errors_to addresses are verified as
765 recipients, not senders.
766
261cf466
TF
767TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
768 the ratelimit ACL was added.
769
3ee512ff
PH
770PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
771
e08c430f
PH
772PH/46 Added extra information about PostgreSQL errors to the error string.
773
bef5a11f
PH
774PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
775 avoiding the need to install special zones in a real server. This is
776 backwards compatible; if it can't find the fake resolver, it drops back.
777 Thus, both old and new test suites can be run.
778
7546de58
TF
779TF/02 Added util/ratelimit.pl
780
e5d5a95f
TF
781TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
782 clock is set back in time.
783
2e88a017
TF
784TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
785 Candler <B.Candler@pobox.com>.
786
a5f65aa4
TF
787TF/05 The fix for PH/43 was not completely correct; widen_domains is always
788 OK for addresses that are the result of redirections.
789
e7726cbf
PH
790PH/48 A number of further additions for the benefit of the new test suite,
791 including a fake gethostbyname() that interfaces to the fake DNS resolver
792 (see PH/47 above).
793
a7fdad5b
TF
794TF/06 The fix for widen_domains has also been applied to qualify_single and
795 search_parents which are the other dnslookup options that can cause
796 header rewrites.
797
6af56900
PH
798PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
799 type ("H").
800
0925ede6
PH
801PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
802
66afa403
TF
803TF/07 Exim produced the error message "an SRV record indicated no SMTP
804 service" if it encountered an MX record with an empty target hostname.
805 The message is now "an MX or SRV record indicated no SMTP service".
806
0154e85a
TF
807TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
808 if the DNS of the sending site is misconfigured. This is quite a
809 common situation. This change restores the behaviour of treating a
810 helo verification defer as a failure.
811
16f12c76
PH
812PH/51 If self=fail was set on a router, the bounce message did not include the
813 actual error message.
814
bbe902f0 815
e5a9dba6
PH
816Exim version 4.52
817-----------------
818
819TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
820
22c3b60b
PH
821PH/01 When a transport filter timed out in a pipe delivery, and the pipe
822 command itself ended in error, the underlying message about the transport
823 filter timeout was being overwritten with the pipe command error. Now the
824 underlying error message should be appended to the second error message.
825
06a9b4b5
PH
826TK/01 Fix poll() being unavailable on Mac OSX 10.2.
827
c1ac6996
PH
828PH/02 Reduce the amount of output that "make" produces by default. Full output
829 can still be requested.
830
9c7a242c
PH
831PH/03 The warning log line about a condition test deferring for a "warn" verb
832 was being output only once per connection, rather than after each
833 occurrence (because it was using the same function as for successful
834 "warn" verbs). This seems wrong, so I have changed it.
835
87ba3f5f
PH
836TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
837 it should not have, which might have caused a crash in the right
838 circumstances, but probably never did.
839
840PH/04 Installed a modified version of Tony Finch's patch to make submission
841 mode fix the return path as well as the Sender: header line, and to
842 add a /name= option so that you can make the user's friendly name appear
843 in the header line.
844
29aba418
TF
845TF/03 Added the control = fakedefer ACL modifier.
846
fe0dab11
TF
847TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
848 Mark Lowes for thorough testing.
870f6ba8 849
11d337a4
TK
850TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
851
852TK/03 Merged latest SRS patch from Miles Wilton.
853
415c8f3b
PH
854PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
855 with the definition in sysexits.h (which is #included earlier).
856 Fortunately, Exim does not actually use EX_OK. The code used to try to
857 preserve the sysexits.h value, by assumimg that macro definitions were
858 scanned for macro replacements. I have been disabused of this notion,
859 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 860
958541e9
PH
861PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
862 in the smtp transport. When a block could not be written in a single
863 write() function, the timeout was being re-applied to each part-write.
864 This seems wrong - if the receiver was accepting one byte at a time it
865 would take for ever. The timeout is now adjusted when this happens. It
866 doesn't have to be particularly precise.
867
c206415f
TK
868TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
869 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
870
2a4be8f9
PH
871PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
872 without a domain if the check to <postmaster@domain> fails.
873
1cba11c5
SC
874SC/01 Eximstats: added -xls and the ability to specify output files
875 (patch written by Frank Heydlauf).
876
877SC/02 Eximstats: use FileHandles for outputing results.
878
879SC/03 Eximstats: allow any combination of xls, txt, and html output.
880
881SC/04 Eximstats: fixed display of large numbers with -nvr option
882
883SC/05 Eximstats: fixed merging of reports with empty tables.
884
885SC/06 Eximstats: added the -include_original_destination flag
886
887SC/07 Eximstats: removed tabs and trailing whitespace.
888
1005d00e
TK
889TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
890
891TK/06 MBOX spool code: Add real "From " MBOX separator line
892 so the .eml file is really in mbox format (even though
893 most programs do not really care). Patch from Alex Miller.
894
895TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
896 The latter is generated from $received_to and is only set if the
897 message has one envelope recipient. SA can use these headers,
898 obviously out-of-the-box. Patch from Alex Miller.
899
9b4768fa
PH
900PH/08 The ${def test on a variable was returning false if the variable's
901 value was "0", contrary to what the specification has always said!
902 The result should be true unless the variable is empty.
903
904PH/09 The syntax error of a character other than { following "${if
905 def:variable_name" (after optional whitespace) was not being diagnosed.
906 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
907 accidental colon was present, for example, could give incorrect results.
908
0d7eb84a
PH
909PH/10 Tidied the code in a number of places where the st_size field of a stat()
910 result is used (not including appendfile, where other changes are about
911 to be made).
912
913PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
914 This involved changing a lot of size variables from int to off_t. It
915 should work with maildirs and everything.
916
40727bee
TK
917TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
918 spamd dying while we are connected to it.
919
554d2369
TF
920TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
921 <jgh@wizmail.org>
922
1f922db1
PH
923PH/12 Applied Alex Kiernan's patch for the API change for the error callback
924 function for BDB 4.3.
925
ef213c3b
PH
926PH/13 Changed auto_thaw such that it does not apply to bounce messages.
927
8ac170f3
PH
928PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
929 the sources for PCRE have been re-arranged and more files are now
930 involved.
931
b1c749bb
PH
932PH/15 The code I had for printing potentially long long variables in PH/11
933 above was not the best (it lost precision). The length of off_t variables
934 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
935 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
936 to be "long long int" or "long int". This is needed for the internal
937 formatting function string_vformat().
b1c749bb 938
4aac9b49
PH
939PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
940 the configuration file to be ":syslog", then the script "guesses" where
941 the logs files are, rather than using the compiled in default. In our
942 case the guess is not the same as the compiled default, so the script
943 suddenly stopped working when I started to use syslog. The patch checks
944 to see if log_file_path is "". If so, it attempts to read it from exim
945 with no configuration file to get the compiled in version, before it
946 falls back to the previous guessing code."
947
294520c8
TK
948TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
949 implementing BATV in an Exim configuration. See NewStuff for the gory
950 details.
951
5bd022fe
PH
952PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
953 Makefile that are specific to HP-UX.
954
90e9ce59
PH
955PH/18 If the "use_postmaster" option was set for a recipient callout together
956 with the "random" option, the postmaster address was used as the MAIL
957 FROM address for the random test, but not for the subsequent recipient
958 test. It is now used for both.
959
5ea81592
PH
960PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
961 patch removes a few documentation additions to RFC 3028, because the
962 latest draft now contains them. It adds the new en;ascii-case comparator
963 and a new error check for 8bit text in MIME parts. Comparator and
964 require names are now matched exactly. I enabled the subaddress
965 extension, but it is not well tested yet (read: it works for me)."
966
c6c2dc1d
PH
967PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
968 rework some of the code of TK/09 above to avoid the hardwired use of
969 "%lld" and "long long". Replaced the call to snprintf() with a call to
970 string_vformat().
971
fffffe4c
PH
972PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
973 records point to non-existent hosts", "retry timeout exceeded", and
974 "retry time not reached for any host after a long failure period".
ca02eafb 975
9a26b6b2
PH
976PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
977 experimental DomainKeys support:
978
979 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
980 (2) On an error such as an illegally used "control", the wrong name for
981 the control was given.
982
983 These problems did NOT occur unless DomainKeys support was compiled.
984
4aee0225
PH
985PH/23 Added daemon_startup_retries and daemon_startup_sleep.
986
32d668a5
PH
987PH/24 Added ${if match_ip condition.
988
8187c3f3
PH
989PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
990 databases so that it will be absolutely obvious if a crash occurs in the
991 DB library. This is a regular occurrence (often caused by mis-matched
992 db.h files).
993
ff790e47 994PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
995 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
996 picked up on a user's system that detects such things. There doesn't seem
997 to be a gcc warning option for this - only an attribute that has to be
998 put on the function's prototype. It seems that in Fedora Core 4 they have
999 set this on a number of new functions. No doubt there will be more in due
1000 course.
ff790e47 1001
5417f6d1
PH
1002PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1003 specify a transport. However, if an address that was verified by such a
1004 router was the subject of a callout, Exim crashed because it tried to
1005 read the rcpt_include_affixes from the non-existent transport. Now it
1006 just assumes that the setting of that option is false. This bug was
1007 introduced by 4.51/PH/31.
1008
59cf8544
PH
1009PH/28 Changed -d+all to exclude +memory, because that information is very
1010 rarely of interest, but it makes the output a lot bigger. People tend to
1011 do -d+all out of habit.
1012
e7ad8a65
PH
1013PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1014 code in os-type was giving problems when libc.so lives in lib64, like on
1015 x86_64 Fedora Core.
1016
ade42478
PH
1017PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1018 aren't the modern standard, and it seems that some systems' include files
1019 don't always have them. Exim was already checking for some of the newer
1020 ones like T_AAAA, and defining it itself. I've added checks for all the
1021 record types that Exim uses.
1022
182ad5cf
PH
1023PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1024 not automatically generating a new one, as it is supposed to. This
1025 prevented TLS from working. If the file did exist, but contained invalid
1026 data, a new version was generated, as expected. It was only the case of a
1027 non-existent file that was broken.
1028
b0d9fc80
TK
1029TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1030 with a change in libdomainkeys > 0.64.
1031
1032TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1033 from DNS. If the selector record carries the flag, it now has
1034 precedence over the domain-wide flag.
1035
1036TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1037
47c7a64a
PH
1038PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1039 the use of a port name that isn't defined in /etc/services) occurred, the
1040 message was deferred as in a normal delivery, and thus remained on the
1041 spool, instead of being failed because of the mua_wrapper setting. This
1042 is now fixed, and I tidied up some of the mua_wrapper messages at the
1043 same time.
1044
a388bce4
SC
1045SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1046 the messages in a hash of arrays rather than using individual hashes.
1047 This is a bit cleaner and results in dramatic memory savings, albeit
1048 at a slight CPU cost.
1049
1050SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1051 as requested by Marc Sherman.
1052
1053SC/10 Eximstats: added histograms for user specified patterns as requested
1054 by Marc Sherman.
1055
0793e4ed
SC
1056SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1057
c58b88df
PH
1058PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1059 fopen() in the content-scanning modules that did not already have it.
1060
e7ad8a65 1061
7982096b
PH
1062Exim version 4.51
1063-----------------
1064
1a46a8c5
PH
1065TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1066 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1067
2f079f46 1068TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1069
1070TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1071
1072PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1073 to test Sieve filters that use "vacation".
1074
1075PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1076 that changes the way the GnuTLS parameters are stored in the cache file.
1077 The new format can be generated externally. For backward compatibility,
1078 if the data in the cache doesn't make sense, Exim assumes it has read an
1079 old-format file, and it generates new data and writes a new file. This
1080 means that you can't go back to an older release without removing the
1081 file.
1082
1083PH/03 A redirect router that has both "unseen" and "one_time" set does not
1084 work if there are any delivery delays because "one_time" forces the
1085 parent to be marked "delivered", so its unseen clone is never tried
1086 again. For this reason, Exim now forbids the simultaneous setting of
1087 these two options.
1088
1089PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1090 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1091 entry if you want to know the details. The fix, however, neglected to
1092 consider the case when local delivery batching is involved. The test for
1093 "previously delivered" was not happening when checking to see if an
1094 address could be batched with a previous (undelivered) one; under
1095 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1096 address.
1a46a8c5
PH
1097
1098PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1099 in its include files, and this causes problems building Exim.
1100
1101PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1102 header_syntax) but Exim was just ignoring anything given after a slash.
1103 In particular, this caused confusion with an attempt to use "verify =
1104 reverse_host_lookup/defer_ok". An error is now given when options are
1105 supplied for verify items that do not have them. (Maybe reverse_host_
1106 lookup should have a defer_ok option, but that's a different point.)
1107
1108PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1109 defined by RFC 821) to 2048, because there were problems with some AUTH
1110 commands, and RFC 1869 says the size should be increased for extended
1111 SMTP commands that take arguments.
1112
1113PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1114 Finch).
1115
1116PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1117 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1118
49c2d5ea
PH
1119PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1120 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1121 whatever). Otherwise the password may appear in the log. Following change
1122 PH/42 below, there is no longer a chance of it appearing in a bounce
1123 message.
49c2d5ea 1124
bf759a8b
PH
1125PH/11 Installed exipick version 20050225.0 from John Jetmore.
1126
83364d30
PH
1127PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1128 of its addresses was ever tried. (Bugzilla bug #2.)
1129
7999bbd7
PH
1130PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1131 the result incorrectly in the debug output. (It correctly added a newline
1132 to what was transported.)
1133
7dbf77c9
PH
1134TF/01 Added $received_time.
1135
74e0617f
PH
1136PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1137 commented out examples of how to interface to a virus scanner and to
1138 SpamAssassin. Also added commented examples of av_scanner and
1139 spamd_address settings.
1140
2f079f46
PH
1141PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1142 and controls are allowed in which ACLs. There were a couple of minor
1143 errors. Some of the entries in the conditions table (which is a table of
1144 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1145 negation of where the condition IS allowed.
1146
8c841523
PH
1147PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1148
7766a4f0
PH
1149PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1150 header file does not have a version number, so I've had to invent a new
1151 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1152 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1153 radiusclient), but it was contributed by a Radius user.
1154
8b417f2c
PH
1155PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1156 files or directories, for OpenSSL.
1157
901f42cb
PH
1158PH/19 When an Exim process that is running as root has to create an Exim log
1159 file, it does so in a subprocess that runs as exim:exim so as to get the
1160 ownership right at creation (otherwise, other Exim processes might see
1161 the file with the wrong ownership). There was no test for failure of this
1162 fork() call, which would lead to the process getting stuck as it waited
1163 for a non-existent subprocess. Forks do occasionally fail when resources
1164 run out. I reviewed all the other calls to fork(); they all seem to check
1165 for failure.
1166
f9b9210e
PH
1167PH/20 When checking for unexpected SMTP input at connect time (before writing
1168 the banner), Exim was not dealing correctly with a non-positive return
1169 from the read() function. If the client had disconnected by this time,
1170 the result was a log entry for a synchronization error with an empty
1171 string after "input=" when read() returned zero. If read() returned -1
1172 (an event I could not check), uninitialized data bytes were printed.
1173 There were reports of junk text (parts of files, etc) appearing after
1174 "input=".
1175
54cdb463
PH
1176PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1177
cf00dad6
PH
1178PH/22 Added support for macro redefinition, and (re)definition in between
1179 driver and ACL definitions.
1180
acb1b346
PH
1181PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1182 forgetting to use the resulting value; it was using the unexpanded value.
1183
c5ddb310
PH
1184PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1185 hadn't been configured. The fix is from Juergen Kreileder, who
1186 understands it better than I do:
1187
1188 "Here's what I see happening with three configured cyrus_sasl
1189 authenticators configured (plain, login, cram-md5):
1190
1191 On startup auth_cyrus_sasl_init() gets called for each of these.
1192 This means three calls to sasl_listmech() without a specified mech_list.
1193 => SASL tests which mechs of all available mechs actually work
1194 => three warnings about OTP not working
1195 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1196
1197 With the patch, sasl_listmech() also gets called three times. But now
1198 SASL's mech_list option is set to the server_mech specified in the the
1199 authenticator. Or in other words, the answer from sasl_listmech()
1200 gets limited to just the mech you're testing for (which is different
1201 for each call.)
1202 => the return list contains just 'plain' or 'login', 'cram-md5' or
1203 nothing depending on the value of ob->server_mech.
1204
1205 I've just tested the patch: Authentication still works fine,
1206 unavailable mechs specified in the exim configuration are still
1207 caught, and the auth.log warnings about OTP are gone."
1208
31619da6
PH
1209PH/25 When debugging is enabled, the contents of the command line are added
1210 to the debugging output, even when log_selector=+arguments is not
1211 specified.
1212
bebaf0fc
PH
1213PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1214 answer is "GNU", and only if the return is "GNU/something" is the answer
1215 "Linux".
1216
475fe28a
PH
1217PH/27 $acl_verify_message is now set immediately after the failure of a
1218 verification in an ACL, and so is available in subsequent modifiers. In
1219 particular, the message can be preserved by coding like this:
1220
1221 warn !verify = sender
1222 set acl_m0 = $acl_verify_message
1223
1224 Previously, $acl_verify_message was set only while expanding "message"
1225 and "log_message" when a very denied access.
1226
7e8bec7a
PH
1227PH/28 Modified OS/os.c-Linux with
1228
1229 -#ifndef OS_LOAD_AVERAGE
1230 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1231
1232 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1233 nomenclature these days.)
1234
e4a89c47
PH
1235PH/29 Installed patch from the Sieve maintainer that adds the options
1236 sieve_useraddress and sieve_subaddress to the redirect router.
1237
5ca2a9a1
PH
1238PH/30 In these circumstances:
1239 . Two addresses routed to the same list of hosts;
1240 . First host does not offer TLS;
1241 . First host accepts first address;
1242 . First host gives temporary error to second address;
1243 . Second host offers TLS and a TLS session is established;
1244 . Second host accepts second address.
1245 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1246 and peerdn, if requested) that were in fact used only for the second
1247 address.
7e8bec7a 1248
c688b954
PH
1249PH/31 When doing a callout as part of verifying an address, Exim was not paying
1250 attention to any local part prefix or suffix that was matched by the
1251 router that accepted the address. It now behaves in the same way as it
1252 does for delivery: the affixes are removed from the local part unless
1253 rcpt_include_affixes is set on the transport.
1254
fed77020
PH
1255PH/32 Add the sender address, as F=<...>, to the log line when logging a
1256 timeout during the DATA phase of an incoming message.
1257
7fe1560f
PH
1258PH/33 Sieve envelope tests were broken for match types other than :is. I have
1259 applied a patch sanctioned by the Sieve maintainer.
c688b954 1260
ebb6e6d5
PH
1261PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1262 the uid or gid is negative. A case of a negative gid caused this to be
1263 noticed. The fix allows for either to be negative.
1264
9c4e8f60
PH
1265PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1266 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1267 overlooked.
1268
1269PH/36 The change PH/12 above was broken. Fixed it.
1270
d7174846
PH
1271PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1272 the grounds that routing the same address twice would always produce the
1273 same answer. This might have been true once, but it is certainly no
1274 longer true now. Routing a child address may depend on the previous
1275 routing that produced that child. Some complicated redirection strategies
1276 went wrong when messages had multiple recipients, and made Exim's
1277 behaviour dependent on the order in which the addresses were given.
1278
1279 I have moved the duplicate checking until after the routing is complete.
1280 Exim scans the addresses that are assigned to local and remote
1281 transports, and removes any duplicates. This means that more work will be
1282 done, as duplicates will always all be routed, but duplicates are
1283 presumably rare, so I don't expect this is of any significance.
1284
1285 For deliveries to pipes, files, and autoreplies, the duplicate checking
1286 still happens during the routing process, since they are not going to be
1287 routed further.
1288
cfe75fc3
PH
1289PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1290 It corrects a timeout issue with spamd. This is Ian's comment: "The
1291 background is that sometimes spamd either never reads data from a
1292 connection it has accepted, or it never writes response data. The exiscan
1293 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1294 blindly assumes that writes won't block so it may never time out."
1295
be22d70e
PH
1296PH/39 Allow G after quota size as well as K and M.
1297
0612b098
PH
1298PH/40 The value set for $authenticated_id in an authenticator may not contain
1299 binary zeroes or newlines because the value is written to log lines and
1300 to spool files. There was no check on this. Now the value is run through
1301 the string_printing() function so that such characters are converted to
1302 printable escape sequences.
1303
2e0c1448
PH
1304PH/41 $message_linecount is a new variable that contains the total number of
1305 lines in the message. Compare $body_linecount, which is the count for the
1306 body only.
1307
447d236c
PH
1308PH/42 Exim no longer gives details of delivery errors for specific addresses in
1309 bounce and delay warning messages, except in certain special cases, which
1310 are as follows:
1311
1312 (a) An SMTP error message from a remote host;
1313 (b) A message specified in a :fail: redirection;
1314 (c) A message specified in a "fail" command in a system filter;
1315 (d) A message specified in a FAIL return from the queryprogram router;
1316 (e) A message specified by the cannot_route_message router option.
1317
1318 In these cases only, Exim does include the error details in bounce and
1319 warning messages. There are also a few cases where bland messages such
1320 as "unrouteable address" or "local delivery error" are given.
1321
d20976dc
PH
1322PH/43 $value is now also set for the "else" part of a ${run expansion.
1323
f656d135
PH
1324PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1325 being worked on, but at least Exim now implements the latest version to
1326 play with."
1327
2e2a30b4
PH
1328PH/45 In a pipe transport, although a timeout while waiting for the pipe
1329 process to complete was treated as a delivery failure, a timeout while
1330 writing the message to the pipe was logged, but erroneously treated as a
1331 successful delivery. Such timeouts include transport filter timeouts. For
1332 consistency with the overall process timeout, these timeouts are now
1333 treated as errors, giving rise to delivery failures by default. However,
1334 there is now a new Boolean option for the pipe transport called
1335 timeout_defer, which, if set TRUE, converts the failures into defers for
1336 both kinds of timeout. A transport filter timeout is now identified in
1337 the log output.
1338
9176e9f0
PH
1339PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1340 systems where "make" and "gmake" are different, calling "gmake" at top
1341 level broke things. I've arranged for the value of $(MAKE) to be passed
1342 from the Makefile to this script so that it can call the same version of
1343 "make".
1344
7982096b 1345
bbe902f0
PH
1346A note about Exim versions 4.44 and 4.50
1347----------------------------------------
1348
1349Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1350changes of various kinds. As a consequence, a big documentation update was
1351needed. This delayed the release for rather longer than seemed good, especially
1352in the light of a couple of (minor) security issues. Therefore, the changes
1353that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1354release. So 4.44 and 4.50 are in effect two different branches that both start
1355from 4.43.
1356
1357I have left the 4.50 change log unchanged; it contains all the changes since
13584.43. The change log for 4.44 is below; many of its items are identical to
1359those for 4.50. This seems to be the most sensible way to preserve the
1360historical information.
1361
1362
f7b63901 1363Exim version 4.50
495ae4b0
PH
1364-----------------
1365
5fe762f6
PH
1366 1. Minor wording change to the doc/README.SIEVE file.
1367
139059f6 1368 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1369 computation of the current number of files was incorrect.
495ae4b0 1370
7086e875
PH
1371 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1372 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1373 place.
1374
35af9f61
PH
1375 4. Give more explanation in the error message when the command for a transport
1376 filter fails to execute.
1377
b668c215
PH
1378 5. There are several places where Exim runs a non-Exim command in a
1379 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1380 was being done only for the command run by the queryprogram router. It is
1381 now done for all such subprocesses. The other cases are: ${run, transport
1382 filters, and the commands run by the lmtp and pipe transports.
1383
a494b1e1
PH
1384 6. Added CONFIGURE_GROUP build-time option.
1385
1386 7. Some older OS have a limit of 256 on the maximum number of file
1387 descriptors. Exim was using setrlimit() to set 1000 as a large value
1388 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1389 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1390
c5fcb476
PH
1391 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1392 was an oversight, and furthermore, ever since the addition of extra
1393 controls (e.g. 4.43/32), the checks on when to allow different forms of
1394 "control" were broken. There should now be diagnostics for all cases when a
1395 control that does not make sense is encountered.
1396
69358f02
PH
1397 9. Added the /retain_sender option to "control=submission".
1398
5be20824
PH
139910. $recipients is now available in the predata ACL (oversight).
1400
eb2c0248
PH
140111. Tidy the search cache before the fork to do a delivery from a message
1402 received from the command line. Otherwise the child will trigger a lookup
1403 failure and thereby defer the delivery if it tries to use (for example) a
1404 cached ldap connection that the parent has called unbind on.
1405
2a3eea10
PH
140612. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1407 of $address_data from the recipient verification was clobbered by the
1408 sender verification.
1409
141013. The value of address_data from a sender verification is now available in
1411 $sender_address_data in subsequent conditions in the ACL statement.
1412
23c7ff99
PH
141314. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1414
4deaf07d
PH
141515. Added a new option "connect=<time>" to callout options, to set a different
1416 connection timeout.
1417
926e1192
PH
141816. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1419 was its contents. (It was OK if the option was not defined at all.)
1420
650edc6f
PH
142117. A "Completed" log line is now written for messages that are removed from
1422 the spool by the -Mrm option.
1423
2c7db3f5
PH
142418. New variables $sender_verify_failure and $recipient_verify_failure contain
1425 information about exactly what failed.
1426
3d235903
PH
142719. Added -dd to debug only the daemon process.
1428
7c7ad977
PH
142920. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1430 handles timeouts, both on the server side and network timeouts. Renamed the
1431 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1432
981756db
PH
143321. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1434 It is now set to "smtps".
1435
d4eb88df
PH
143622. $host_address is now set to the target address during the checking of
1437 ignore_target_hosts.
1438
143923. When checking ignore_target_hosts for an ipliteral router, no host name was
1440 being passed; this would have caused $sender_host_name to have been used if
1441 matching the list had actually called for a host name (not very likely,
1442 since this list is usually IP addresses). A host name is now passed as
1443 "[x.x.x.x]".
1444
7d468ab8
PH
144524. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1446 code that specifies a non-restarting handler (typically sigaction() in
1447 modern systems) in an attempt to fix a rare and obscure crash bug.
1448
144925. Narrowed the window for a race in the daemon that could cause it to ignore
1450 SIGCHLD signals. This is not a major problem, because they are used only to
1451 wake it up if nothing else does.
1452
62c0818f
PH
145326. A malformed maildirsize file could cause Exim to calculate negative values
1454 for the mailbox size or file count. Odd effects could occur as a result.
1455 The maildirsize information is now recalculated if the size or filecount
1456 end up negative.
1457
26034054
PH
145827. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1459 support for a long time. Removed HAVE_SYS_VFS_H.
1460
af66f652
PH
146128. Installed the latest version of exipick from John Jetmore.
1462
90af77f4
PH
146329. In an address list, if the pattern was not a regular expression, an empty
1464 subject address (from a bounce message) matched only if the pattern was an
1465 empty string. Non-empty patterns were not even tested. This was the wrong
1466 because it is perfectly reasonable to use an empty address as part of a
1467 database query. An empty address is now tested by patterns that are
1468 lookups. However, all the other forms of pattern expect the subject to
1469 contain a local part and a domain, and therefore, for them, an empty
1470 address still always fails if the pattern is not itself empty.
1471
d8ef3577
PH
147230. Exim went into a mad DNS loop when attempting to do a callout where the
1473 host was specified on an smtp transport, and looking it up yielded more
1474 than one IP address.
1475
5cb8cbc6
PH
147631. Re-factored the code for checking spool and log partition space into a
1477 function that finds that data and another that does the check. The former
1478 is then used to implement four new variables: $spool_space, $log_space,
1479 $spool_inodes, and $log_inodes.
1480
14702f5b
PH
148132. The RFC2047 encoding function was originally intended for short strings
1482 such as real names; it was not keeping to the 75-character limit for
1483 encoded words that the RFC imposes. It now respects the limit, and
1484 generates multiple encoded words if necessary. To be on the safe side, I
1485 have increased the buffer size for the ${rfc2047: expansion operator from
1486 1024 to 2048 bytes.
1487
063b1e99
PH
148833. It is now permitted to omit both strings after an "if" condition; if the
1489 condition is true, the result is "true". As before, when the second string
1490 is omitted, a false condition yields an empty string. This makes it less
1491 cumbersome to write custom ACL and router conditions.
1492
652e1b65
PH
149334. Failure to deliver a bounce message always caused it to be frozen, even if
1494 there was an errors_to setting on the router. The errors_to setting is now
1495 respected.
1496
6f0c9a4f
PH
149735. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1498 canonical form (fully expanded) before being placed in
1499 $sender_host_address.
1500
33397d19
PH
150136. The table in the code that translates DNS record types into text (T_A to
1502 "A" for instance) was missing entries for NS and CNAME. It is just possible
1503 that this could have caused confusion if both these types were looked up
1504 for the same domain, because the text type is used as part of Exim's
1505 per-process caching. But the chance of anyone hitting this buglet seems
1506 very small.
1507
7bb56e1f
PH
150837. The dnsdb lookup has been extended in a number of ways.
1509
1510 (1) There is a new type, "zns", which walks up the domain tree until it
1511 finds some nameserver records. It should be used with care.
1512
ea3bc19b
PH
1513 (2) There is a new type, "mxh", which is like "mx" except that it returns
1514 just the host names, not the priorities.
1515
1516 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1517 looked up. The behaviour when one of the lookups defers can be
1518 controlled by a keyword.
7bb56e1f 1519
ea3bc19b 1520 (4) It is now possible to specify the separator character for use when
7bb56e1f 1521 multiple records are returned.
33397d19 1522
0bcb2a0e
PH
152338. The dnslists ACL condition has been extended: it is now possible to supply
1524 a list of IP addresses and/or domains to be looked up in a particular DNS
1525 domain.
1526
2ac0e484
PH
152739. Added log_selector=+queue_time_overall.
1528
4e1fde53
PH
152940. When running the queue in the test harness, wait just a tad after forking a
1530 delivery process, to get repeatability of debugging output.
1531
de365ded
PH
153241. Include certificate and key file names in error message when GnuTLS fails
1533 to set them up, because the GnuTLS error message doesn't include the name
1534 of the failing file when there is a problem reading it.
1535
f05da2e8
PH
153642. Allow both -bf and -bF in the same test run.
1537
d6453af2
PH
153843. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1539
f7b63901
PH
154044. The "Exiscan patch" is now merged into the mainline Exim source.
1541
154245. Sometimes the final signoff response after QUIT could fail to get
1543 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1544 < 0 before doing a fflush(). This bug looks as though it goes back to the
1545 introduction of TLS in release 3.20, but "sometimes" must have been rare
1546 because the tests only now provoked it.
1547
a444213a
PH
154846. Reset the locale to "C" after calling embedded Perl, in case it was changed
1549 (this can affect the format of dates).
1550
0ec020ea
PH
155147. exim_tidydb, when checking for the continued existence of a message for
1552 which it has found a message-specific retry record, was not finding
1553 messages that were in split spool directories. Consequently, it was
1554 deleting retry records that should have stayed in existence.
1555
b1206957
PH
155648. Steve fixed some bugs in eximstats.
1557
155849. The SPA authentication driver was not abandoning authentication and moving
1559 on to the next authenticator when an expansion was forced to fail,
1560 contradicting the general specification for all authenticators. Instead it
1561 was generating a temporary error. It now behaves as specified.
1562
26dd5a95
PH
156350. The default ordering of permitted cipher suites for GnuTLS was pessimal
1564 (the order specifies the preference for clients). The order is now AES256,
1565 AES128, 3DES, ARCFOUR128.
1566
343b2385
PH
156751. Small patch to Sieve code - explicitly set From: when generating an
1568 autoreply.
1569
1c5466b9
PH
157052. Exim crashed if a remote delivery caused a very long error message to be
1571 recorded - for instance if somebody sent an entire SpamAssassin report back
1572 as a large number of 550 error lines. This bug was coincidentally fixed by
1573 increasing the size of one of Exim's internal buffers (big_buffer) that
1574 happened as part of the Exiscan merge. However, to be on the safe side, I
1575 have made the code more robust (and fixed the comments that describe what
1576 is going on).
1577
55ee9ee3
PH
157853. Now that there can be additional text after "Completed" in log lines (if
1579 the queue_time_overall log selector is set), a one-byte patch to exigrep
1580 was needed to allow it to recognize "Completed" as not the last thing in
1581 the line.
1582
d38f8232
PH
158354. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1584 patch that reportedly fixes this has been added. I am not expert enough to
1585 create a test for it. This is what the patch creator wrote:
1586
1587 "I found a little strange behaviour of ldap code when working with
1588 Windows 2003 AD Domain, where users was placed in more than one
1589 Organization Units. When I tried to give exim partial DN, the exit code
1590 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1591 But simultaneously result of request was absolutely normal ldap result,
1592 so I produce this patch..."
1593
3295e65b
PH
1594 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1595 REFERENCE, so I have modified the code to exclude the patch when that macro
1596 is not defined.
1597
7102e136
PH
159855. Some experimental protocols are using DNS PTR records for new purposes. The
1599 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1600 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1601 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1602 CAN-2005-0021
7102e136 1603
3ca0ba97
PH
160456. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1605
c2bcbe20
PH
160657. Double the size of the debug message buffer (to 2048) so that more of very
1607 long debug lines gets shown.
1608
18ce445d
PH
160958. The exicyclog utility now does better if the number of log files to keep
1610 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
1611
1f5b4c3d
PH
161259. Two changes related to the smtp_active_hostname option:
1613
1614 (1) $smtp_active_hostname is now available as a variable.
1615 (2) The default for smtp_banner uses $smtp_active_hostname instead
1616 of $primary_hostname.
1617
b975ba52
PH
161860. The host_aton() function is supposed to be passed a string that is known
1619 to be a valid IP address. However, in the case of IPv6 addresses, it was
1620 not checking this. This is a hostage to fortune. Exim now panics and dies
1621 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
1622 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1623 components; fortuitously, this particular loophole had already been fixed
1624 by change 4.50/55 above.
1625
1626 If there are any other similar loopholes, the new check in host_aton()
1627 itself should stop them being exploited. The report I received stated that
1628 data on the command line could provoke the exploit when Exim was running as
1629 exim, but did not say which command line option was involved. All I could
1630 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1631 running as the user.
ea3a6f44 1632 CAN-2005-0021
85b87bc2
PH
1633
163461. There was a buffer overflow vulnerability in the SPA authentication code
1635 (which came originally from the Samba project). I have added a test to the
1636 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 1637 CAN-2005-0022
b975ba52 1638
17ffcae7
PH
163962. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
1640 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
1641
d95f9fdb
PH
164263. The daemon start-up calls getloadavg() while still root for those OS that
1643 need the first call to be done as root, but it missed one case: when
1644 deliver_queue_load_max is set with deliver_drop_privilege. This is
1645 necessary for the benefit of the queue runner, because there is no re-exec
1646 when deliver_drop_privilege is set.
1647
86b8287f
PH
164864. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
1649 This has been fixed.
1650
60dc5e56
PH
165165. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1652 was in use, was not putting the data itself into the right store pool;
1653 consequently, it could be overwritten for a subsequent message in the same
1654 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1655 the caching.)
1656
533244af
PH
165766. Added hosts_max_try_hardlimit to the smtp transport, default 50.
1658
a5a28604
PH
165967. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
1660 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
1661 the function were treating the return as a boolean value, which happened to
1662 work because 0=false and not-0=true, but is not correct code.
1663
7e634d24
PH
166468. The host_aton() function was not handling scoped IPv6 addresses (those
1665 with, for example, "%eth0" on the end) correctly.
1666
3e11c26b
PH
166769. Fixed some compiler warnings in acl.c for the bitmaps specified with
1668 negated items (that is, ~something) in unsigned ints. Some compilers
1669 apparently mutter when there is no cast.
1670
6729cf78
PH
167170. If an address verification called from an ACL failed, and did not produce a
1672 user-specific message (i.e. there was only a "system" message), nothing was
1673 put in $acl_verify_message. In this situation, it now puts the system
1674 message there.
1675
00f00ca5
PH
167671. Change 4.23/11 added synchronization checking at the start of an SMTP
1677 session; change 4.31/43 added the unwanted input to the log line - except
1678 that it did not do this in the start of session case. It now does.
1679
c9bdd01c
PH
168072. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
1681 This is wrong and can cause the other end to generate a synchronization
1682 error if it is another Exim or anything else that does the synchronization
1683 check. A QUIT command is no longer sent after a timeout.
1684
d43194df
PH
168573. $host_lookup_deferred has been added, to make it easier to detect DEFERs
1686 during host lookups.
1687
fe5b5d0b
PH
168874. The defer_ok option of callout verification was not working if it was used
1689 when verifying addresses in header lines, that is, for this case:
1690
1691 verify = header_sender/callout=defer_ok
1692
76a2d7ba
PH
169375. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
1694 those file descriptors could be used for SMTP connections. If anything
1695 wrote to stderr (the example that came up was "warn" in embedded Perl), it
1696 could be sent to the SMTP client, causing chaos. The daemon now opens
1697 stdin, stdout, and stderr to /dev/null when it puts itself into the
1698 background.
1699
170076. Arrange for output from Perl's "warn" command to be written to Exim's main
1701 log by default. The user can override this with suitable Perl magic.
1702
04f7d5b9
PH
170377. The use of log_message on a "discard" ACL verb, which is supposed to add to
1704 the log message when discard triggers, was not working for the DATA ACL or
1705 for the non-SMTP ACL.
1706
bc60667e
PH
170778. Error message wording change in sieve.c.
1708
bb6e88ff
PH
170979. If smtp_accept_max_per_host was set, the number of connections could be
1710 restricted to fewer than expected, because the daemon was trying to set up
1711 a new connection before checking whether the processes handling previous
1712 connections had finished. The check for completed processes is now done
1713 earlier. On busy systems, this bug wouldn't be noticed because something
1714 else would have woken the daemon, and it would have reaped the completed
1715 process earlier.
1716
1e70f85b
PH
171780. If a message was submitted locally by a user whose login name contained one
1718 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
1719 It caused a spool format error. I have fixed the spool reading code. A
1720 related problem was that the "from" clause in the Received: line became
1721 illegal because of the space(s). It is now covered by ${quote_local_part.
1722
172381. Included the latest eximstats from Steve (adds average sizes to HTML Top
1724 tables).
1725
4e01f9d6
PH
172682. Updated OS/Makefile-AIX as per message from Mike Meredith.
1727
1ee1cef2
PH
172883. Patch from Sieve maintainer to fix unterminated string problem in
1729 "vacation" handling.
1730
6e2b4ccc
PH
173184. Some minor changes to the Linux configuration files to help with other
1732 OS variants using glibc.
1733
8e669ac1
PH
173485. One more patch for Sieve to update vacation handling to latest spec.
1735
495ae4b0 1736
bbe902f0
PH
1737----------------------------------------------------
1738See the note above about the 4.44 and 4.50 releases.
1739----------------------------------------------------
1740
1741
1742Exim version 4.44
1743-----------------
1744
1745 1. Change 4.43/35 introduced a bug that caused file counts to be
1746 incorrectly computed when quota_filecount was set in an appendfile
1747 transport
1748
1749 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1750 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1751 place.
1752
1753 3. Give more explanation in the error message when the command for a transport
1754 filter fails to execute.
1755
1756 4. There are several places where Exim runs a non-Exim command in a
1757 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1758 was being done only for the command run by the queryprogram router. It is
1759 now done for all such subprocesses. The other cases are: ${run, transport
1760 filters, and the commands run by the lmtp and pipe transports.
1761
1762 5. Some older OS have a limit of 256 on the maximum number of file
1763 descriptors. Exim was using setrlimit() to set 1000 as a large value
1764 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1765 systems. I've change it so that if it can't get 1000, it tries for 256.
1766
1767 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1768 was an oversight, and furthermore, ever since the addition of extra
1769 controls (e.g. 4.43/32), the checks on when to allow different forms of
1770 "control" were broken. There should now be diagnostics for all cases when a
1771 control that does not make sense is encountered.
1772
1773 7. $recipients is now available in the predata ACL (oversight).
1774
1775 8. Tidy the search cache before the fork to do a delivery from a message
1776 received from the command line. Otherwise the child will trigger a lookup
1777 failure and thereby defer the delivery if it tries to use (for example) a
1778 cached ldap connection that the parent has called unbind on.
1779
1780 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1781 of $address_data from the recipient verification was clobbered by the
1782 sender verification.
1783
178410. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1785 was its contents. (It was OK if the option was not defined at all.)
1786
178711. A "Completed" log line is now written for messages that are removed from
1788 the spool by the -Mrm option.
1789
179012. $host_address is now set to the target address during the checking of
1791 ignore_target_hosts.
1792
179313. When checking ignore_target_hosts for an ipliteral router, no host name was
1794 being passed; this would have caused $sender_host_name to have been used if
1795 matching the list had actually called for a host name (not very likely,
1796 since this list is usually IP addresses). A host name is now passed as
1797 "[x.x.x.x]".
1798
179914. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1800 code that specifies a non-restarting handler (typically sigaction() in
1801 modern systems) in an attempt to fix a rare and obscure crash bug.
1802
180315. Narrowed the window for a race in the daemon that could cause it to ignore
1804 SIGCHLD signals. This is not a major problem, because they are used only to
1805 wake it up if nothing else does.
1806
180716. A malformed maildirsize file could cause Exim to calculate negative values
1808 for the mailbox size or file count. Odd effects could occur as a result.
1809 The maildirsize information is now recalculated if the size or filecount
1810 end up negative.
1811
181217. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1813 support for a long time. Removed HAVE_SYS_VFS_H.
1814
ea3a6f44 181518. Updated exipick to current release from John Jetmore.
bbe902f0
PH
1816
181719. Allow an empty sender to be matched against a lookup in an address list.
1818 Previously the only cases considered were a regular expression, or an
1819 empty pattern.
1820
182120. Exim went into a mad DNS lookup loop when doing a callout where the
1822 host was specified on the transport, if the DNS lookup yielded more than
1823 one IP address.
1824
ea3a6f44
NM
182521. The RFC2047 encoding function was originally intended for short strings
1826 such as real names; it was not keeping to the 75-character limit for
1827 encoded words that the RFC imposes. It now respects the limit, and
1828 generates multiple encoded words if necessary. To be on the safe side, I
1829 have increased the buffer size for the ${rfc2047: expansion operator from
1830 1024 to 2048 bytes.
bbe902f0 1831
ea3a6f44
NM
183222. Failure to deliver a bounce message always caused it to be frozen, even if
1833 there was an errors_to setting on the router. The errors_to setting is now
1834 respected.
bbe902f0
PH
1835
183623. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1837 canonical form (fully expanded) before being placed in
1838 $sender_host_address.
1839
184024. Updated eximstats to version 1.33
1841
ea3a6f44
NM
184225. Include certificate and key file names in error message when GnuTLS fails
1843 to set them up, because the GnuTLS error message doesn't include the name
1844 of the failing file when there is a problem reading it.
bbe902f0
PH
1845
184626. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 1847 As per change 25.
bbe902f0 1848
ea3a6f44
NM
184927. Reset the locale to "C" after calling embedded Perl, in case it was changed
1850 (this can affect the format of dates).
bbe902f0 1851
ea3a6f44
NM
185228. exim_tidydb, when checking for the continued existence of a message for
1853 which it has found a message-specific retry record, was not finding
1854 messages that were in split spool directories. Consequently, it was
1855 deleting retry records that should have stayed in existence.
bbe902f0
PH
1856
185729. eximstats updated to version 1.35
1858 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
1859 1.35 - bugfix such that pie charts by volume are generated correctly
1860
ea3a6f44
NM
186130. The SPA authentication driver was not abandoning authentication and moving
1862 on to the next authenticator when an expansion was forced to fail,
1863 contradicting the general specification for all authenticators. Instead it
1864 was generating a temporary error. It now behaves as specified.
bbe902f0 1865
ea3a6f44
NM
186631. The default ordering of permitted cipher suites for GnuTLS was pessimal
1867 (the order specifies the preference for clients). The order is now AES256,
1868 AES128, 3DES, ARCFOUR128.
bbe902f0 1869
ea3a6f44
NM
187031. Small patch to Sieve code - explicitly set From: when generating an
1871 autoreply.
bbe902f0 1872
ea3a6f44
NM
187332. Exim crashed if a remote delivery caused a very long error message to be
1874 recorded - for instance if somebody sent an entire SpamAssassin report back
1875 as a large number of 550 error lines. This bug was coincidentally fixed by
1876 increasing the size of one of Exim's internal buffers (big_buffer) that
1877 happened as part of the Exiscan merge. However, to be on the safe side, I
1878 have made the code more robust (and fixed the comments that describe what
1879 is going on).
bbe902f0 1880
ea3a6f44
NM
188133. Some experimental protocols are using DNS PTR records for new purposes. The
1882 keys for these records are domain names, not reversed IP addresses. The
1883 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1884 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
1885 CAN-2005-0021
1886
ea3a6f44
NM
188734. The host_aton() function is supposed to be passed a string that is known
1888 to be a valid IP address. However, in the case of IPv6 addresses, it was
1889 not checking this. This is a hostage to fortune. Exim now panics and dies
1890 if the condition is not met. A case was found where this could be provoked
1891 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1892 components; fortuitously, this particular loophole had already been fixed
1893 by change 4.50/55 or 4.44/33 above.
1894
1895 If there are any other similar loopholes, the new check in host_aton()
1896 itself should stop them being exploited. The report I received stated that
1897 data on the command line could provoke the exploit when Exim was running as
1898 exim, but did not say which command line option was involved. All I could
1899 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1900 running as the user.
bbe902f0
PH
1901 CAN-2005-0021
1902
ea3a6f44
NM
190335. There was a buffer overflow vulnerability in the SPA authentication code
1904 (which came originally from the Samba project). I have added a test to the
1905 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
1906 CAN-2005-0022
1907
ea3a6f44
NM
190836. The daemon start-up calls getloadavg() while still root for those OS that
1909 need the first call to be done as root, but it missed one case: when
1910 deliver_queue_load_max is set with deliver_drop_privilege. This is
1911 necessary for the benefit of the queue runner, because there is no re-exec
1912 when deliver_drop_privilege is set.
bbe902f0 1913
ea3a6f44
NM
191437. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1915 was in use, was not putting the data itself into the right store pool;
1916 consequently, it could be overwritten for a subsequent message in the same
1917 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1918 the caching.)
bbe902f0 1919
ea3a6f44
NM
192038. Sometimes the final signoff response after QUIT could fail to get
1921 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1922 < 0 before doing a fflush(). This bug looks as though it goes back to the
1923 introduction of TLS in release 3.20, but "sometimes" must have been rare
1924 because the tests only now provoked it.
bbe902f0
PH
1925
1926
495ae4b0
PH
1927Exim version 4.43
1928-----------------
1929
1930 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
1931 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
1932 Now it returns an integer. A number of calls were still expecting a T/F
1933 return. Fortuitously, in all cases, the tests worked in OK situations,
1934 which is the norm. However, things would have gone wrong on any write
1935 failures on the smtp file descriptor. This function is used when sending
1936 messages over SMTP and also when doing verify callouts.
1937
1938 2. When Exim is called to do synchronous delivery of a locally submitted
1939 message (the -odf or -odi options), it no longer closes stderr before doing
1940 the delivery.
1941
1942 3. Implemented the mua_wrapper option.
1943
1944 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
1945
1946 5. Implemented the functions header_remove(), header_testname(),
1947 header_add_at_position(), and receive_remove_recipient(), and exported them
1948 to local_scan().
1949
1950 6. If an ACL "warn" statement specified the addition of headers, Exim already
1951 inserted X-ACL-Warn: at the start if there was no header name. However, it
1952 was not making this test for the second and subsequent header lines if
1953 there were newlines in the string. This meant that an invalid header could
1954 be inserted if Exim was badly configured.
1955
1956 7. Allow an ACL "warn" statement to add header lines at the start or after all
1957 the Received: headers, as well as at the end.
1958
1959 8. Added the rcpt_4xx retry error code.
1960
1961 9. Added postmaster_mailfrom=xxx to callout verification option.
1962
196310. Added mailfrom=xxxx to the callout verification option, for verify=
1964 header_sender only.
1965
196611. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
1967 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
1968
196912. Inserted some casts to stop certain compilers warning when using pointer
1970 differences as field lengths or precisions in printf-type calls (mostly
1971 affecting debugging statements).
1972
197313. Added optional readline() support for -be (dynamically loaded).
1974
197514. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
1976 same clock tick as a message's arrival, so that its received time was the
1977 same as the "first fail" time on the retry record, and that message
1978 remained on the queue past the ultimate address timeout, every queue runner
1979 would try a delivery (because it was past the ultimate address timeout) but
1980 after another failure, the ultimate address timeout, which should have then
1981 bounced the address, did not kick in. This was a "< instead of <=" error;
1982 in most cases the first failure would have been in the next clock tick
1983 after the received time, and all would be well.
1984
198515. The special items beginning with @ in domain lists (e.g. @mx_any) were not
1986 being recognized when the domain list was tested by the match_domain
1987 condition in an expansion string.
1988
198916. Added the ${str2b64: operator.
1990
199117. Exim was always calling setrlimit() to set a large limit for the number of
1992 processes, without checking whether the existing limit was already
1993 adequate. (It did check for the limit on file descriptors.) Furthermore,
1994 errors from getrlimit() and setrlimit() were being ignored. Now they are
1995 logged to the main and panic logs, but Exim does carry on, to try to do its
1996 job under whatever limits there are.
1997
199818. Imported PCRE 5.0.
1999
200019. Trivial typo in log message " temporarily refused connection" (the leading
2001 space).
2002
200320. If the log selector return_path_on_delivery was set and an address was
2004 redirected to /dev/null, the delivery process crashed because it assumed
2005 that a return path would always be set for a "successful" delivery. In this
2006 case, the whole delivery is bypassed as an optimization, and therefore no
2007 return path is set.
2008
200921. Internal re-arrangement: the function for sending a challenge and reading
2010 a response while authentication was assuming a zero-terminated challenge
2011 string. It's now changed to take a pointer and a length, to allow for
2012 binary data in such strings.
2013
201422. Added the cyrus_sasl authenticator (code supplied by MBM).
2015
201623. Exim was not respecting finduser_retries when seeking the login of the
2017 uid under which it was called; it was always trying 10 times. (The default
2018 setting of finduser_retries is zero.) Also, it was sleeping after the final
2019 failure, which is pointless.
2020
202124. Implemented tls_on_connect_ports.
2022
202325. Implemented acl_smtp_predata.
2024
202526. If the domain in control=submission is set empty, Exim assumes that the
2026 authenticated id is a complete email address when it generates From: or
2027 Sender: header lines.
2028
202927. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2030 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2031 chown and chgrp in /bin and hostname in /usr/bin.
2032
203328. Exim was keeping the "process log" file open after each use, just as it
2034 does for the main log. This opens the possibility of it remaining open for
2035 long periods when the USR1 signal hits a daemon. Occasional processlog
2036 errors were reported, that could have been caused by this. Anyway, it seems
2037 much more sensible not to leave this file open at all, so that is what now
2038 happens.
2039
204029. The long-running daemon process does not normally write to the log once it
2041 has entered its main loop, and it closes the log before doing so. This is
2042 so that log files can straightforwardly be renamed and moved. However,
2043 there are a couple of unusual error situations where the daemon does write
2044 log entries, and I had neglected to close the log afterwards.
2045
204630. The text of an SMTP error response that was received during a remote
2047 delivery was being truncated at 512 bytes. This is too short for some of
2048 the long messages that one sometimes sees. I've increased the limit to
2049 1024.
2050
205131. It is now possible to make retry rules that apply only when a message has a
2052 specific sender, in particular, an empty sender.
2053
205432. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2055 it possible to be selective about when SMTP synchronization is enforced.
2056
205733. Added "control = caseful_local_part" and "control = "caselower_local_part".
2058
205932. Implemented hosts_connection_nolog.
2060
206133. Added an ACL for QUIT.
2062
206334. Setting "delay_warning=" to disable warnings was not working; it gave a
2064 syntax error.
2065
206635. Added mailbox_size and mailbox_filecount to appendfile.
2067
206836. Added control = no_multiline_responses to ACLs.
2069
207037. There was a bug in the logic of the code that waits for the clock to tick
2071 in the case where the clock went backwards by a substantial amount such
2072 that the microsecond fraction of "now" was more than the microsecond
2073 fraction of "then" (but the whole seconds number was less).
2074
207538. Added support for the libradius Radius client library this is found on
2076 FreeBSD (previously only the radiusclient library was supported).
2077
2078
2079Exim version 4.42
2080-----------------
2081
2082 1. When certain lookups returned multiple values in the form name=value, the
2083 quoting of the values was not always being done properly. Specifically:
2084 (a) If the value started with a double quote, but contained no whitespace,
2085 it was not quoted.
2086 (b) If the value contained whitespace other than a space character (i.e.
2087 tabs or newlines or carriage returns) it was not quoted.
2088 This fix has been applied to the mysql and pgsql lookups by writing a
2089 separate quoting function and calling it from the lookup code. The fix
2090 should probably also be applied to nisplus, ibase and oracle lookups, but
2091 since I cannot test any of those, I have not disturbed their existing code.
2092
2093 2. A hit in the callout cache for a specific address caused a log line with no
2094 reason for rejecting RCPT. Now it says "Previous (cached) callout
2095 verification failure".
2096
2097 3. There was an off-by-one bug in the queryprogram router. An over-long
2098 return line was truncated at 256 instead of 255 characters, thereby
2099 overflowing its buffer with the terminating zero. As well as fixing this, I
2100 have increased the buffer size to 1024 (and made a note to document this).
2101
2102 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2103 when Exim is waiting for an SMTP response from a remote server, Exim
2104 restarts its select() call on the socket, thereby resetting its timeout.
2105 This is not a problem when such interrupts are rare. Somebody set up a cron
2106 job to run exiwhat every 2 minutes, which is less than the normal select()
2107 timeout (5 or 10 minutes). This meant that the select() timeout never
2108 kicked in because it was always reset. I have fixed this by comparing the
2109 time when an interrupt arrives with the time at the start of the first call
2110 to select(). If more time than the timeout has elapsed, the interrupt is
2111 treated as a timeout.
2112
2113 5. Some internal re-factoring in preparation for the addition of Sieve
2114 extensions (by MH). In particular, the "personal" test is moved to a
2115 separate function, and given an option for scanning Cc: and Bcc: (which is
2116 not set for Exim filters).
2117
2118 6. When Exim created an email address using the login of the caller as the
2119 local part (e.g. when creating a From: or Sender: header line), it was not
2120 quoting the local part when it contained special characters such as @.
2121
2122 7. Installed new OpenBSD configuration files.
2123
2124 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2125 try to make them clearer.
2126
2127 9. Callout options, other than the timeout value, were being ignored when
2128 verifying sender addresses in header lines. For example, when using
2129
2130 verify = header_sender/callout=no_cache
2131
2132 the cache was (incorrectly) being used.
2133
213410. Added a missing instance of ${EXE} to the exim_install script; this affects
2135 only the Cygwin environment.
2136
213711. When return_path_on_delivery was set as a log selector, if different remote
2138 addresses in the same message used different return paths and parallel
2139 remote delivery occurred, the wrong values would sometimes be logged.
2140 (Whenever a remote delivery process finished, the return path value from
2141 the most recently started remote delivery process was logged.)
2142
214312. RFC 3848 specifies standard names for the "with" phrase in Received: header
2144 lines when AUTH and/or TLS are in use. This is the "received protocol"
2145 field. Exim used to use "asmtp" for authenticated SMTP, without any
2146 indication (in the protocol name) for TLS use. Now it follows the RFC and
2147 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2148 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2149 names appear in log lines as well as in Received: header lines.
2150
215113. Installed MH's patches for Sieve to add the "copy" and "vacation"
2152 extensions, and comparison tests, and to fix some bugs.
2153
215414. Changes to the "personal" filter test:
2155
2156 (1) The test was buggy in that it was just doing the equivalent of
2157 "contains" tests on header lines. For example, if a user's address was
2158 anne@some.where, the "personal" test would incorrectly be true for
2159
2160 To: susanne@some.where
2161
2162 This test is now done by extracting each address from the header in turn,
2163 and checking the entire address. Other tests that are part of "personal"
2164 are now done using regular expressions (for example, to check local parts
2165 of addresses in From: header lines).
2166
2167 (2) The list of non-personal local parts in From: addresses has been
2168 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2169 taken from the Sieve specification recommendations.
2170
2171 (3) If the message contains any header line starting with "List-" it is
2172 treated as non-personal.
2173
2174 (4) The test for "circular" in the Subject: header line has been removed
2175 because it now seems ill-conceived.
2176
217715. Minor typos in src/EDITME comments corrected.
2178
217916. Installed latest exipick from John Jetmore.
2180
218117. If headers_add on a router specified a text string that was too long for
2182 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2183 of string_sprintf() is now avoided.
2184
218518. $message_body_size was not set (it was always zero) when running the DATA
2186 ACL and the local_scan() function.
2187
218819. For the "mail" command in an Exim filter, no default was being set for
2189 the once_repeat time, causing a random time value to be used if "once" was
2190 specified. (If the value happened to be <= 0, no repeat happened.) The
2191 default is now 0s, meaning "never repeat". The "vacation" command was OK
2192 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2193 (I found it when inspecting the code).
2194
219520. There is now an overall timeout for performing a callout verification. It
2196 defaults to 4 times the callout timeout, which applies to individual SMTP
2197 commands during the callout. The overall timeout applies when there is more
2198 than one host that can be tried. The timeout is checked before trying the
2199 next host. This prevents very long delays if there are a large number of
2200 hosts and all are timing out (e.g. when the network connections are timing
2201 out). The value of the overall timeout can be changed by specifying an
2202 additional sub-option for "callout", called "maxwait". For example:
2203
2204 verify = sender/callout=5s,maxwait=20s
2205
220621. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2207 to the end before writing, but this should make it even safer).
2208
220922. Exim was forgetting that it had advertised PIPELINING for the second and
2210 subsequent messages on an SMTP connection. It was also not resetting its
2211 memory on STARTTLS and an internal HELO.
2212
221323. When Exim logs an SMTP synchronization error within a session, it now
2214 records whether PIPELINING has been advertised or not.
2215
221624. Added 3 instances of "(long int)" casts to time_t variables that were being
2217 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2218 rather than long int.
2219
222025. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2221
222226. Added the never_mail option to autoreply.
2223
2224
2225Exim version 4.41
2226-----------------
2227
2228 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2229 crash if the getsockname() call failed; this can happen if a connection is
2230 closed very soon after it is established. The problem was simply in the
2231 order in which certain operations were done, causing Exim to try to write
2232 to the SMTP stream before it had set up the file descriptor. The bug has
2233 been fixed by making things happen in the correct order.
2234
2235
2236Exim version 4.40
2237-----------------
2238
2239 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2240 before the connection was closed, thus losing the rejection response.
2241
2242 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2243 some early Solaris releases, but causes trouble in current releases where
2244 socklen_t is defined.
2245
2246 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2247 always exist.
2248
2249 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2250 configured.
2251
2252 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2253 that releasing the top of it at the end releases what was used for sub-
2254 expansions (unless the block got too big). However, discard this block if
2255 the first thing is a variable or header, so that we can use its block when
2256 it is dynamic (useful for very large $message_headers, for example).
2257
2258 6. Lookups now cache *every* query, not just the most recent. A new, separate
2259 store pool is used for this. It can be recovered when all lookup caches are
2260 flushed. Lookups now release memory at the end of their result strings.
2261 This has involved some general refactoring of the lookup sources.
2262
2263 7. Some code has been added to the store_xxx() functions to reduce the amount
2264 of flapping under certain conditions.
2265
2266 8. log_incoming_interface used to affect only the <= reception log lines. Now
2267 it causes the local interface and port to be added to several more SMTP log
2268 lines, for example "SMTP connection from", and rejection lines.
2269
2270 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2271
227210. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2273
227411. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2275 could be overwritten at the end of the current message (or the start of a
2276 new message if it was set in a HELO ACL). The value is now preserved for
2277 the duration of the SMTP connection.
2278
227912. If a transport had a headers_rewrite setting, and a matching header line
2280 contained an unqualified address, that address was qualified, even if it
2281 did not match any rewriting rules. The underlying bug was that the values
2282 of the flags that permit the existence of unqualified sender and recipient
2283 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2284 non-local messages, and by -bnq for local messages) were not being
2285 preserved with the message after it was received.
2286
228713. When Exim was logging an SMTP synchronization error, it could sometimes log
2288 "next input=" as part of the text comprising the host identity instead of
2289 the correct text. The code was using the same buffer for two different
2290 strings. However, depending on which order the printing function evaluated
2291 its arguments, the bug did not always show up. Under Linux, for example, my
2292 test suite worked just fine.
2293
229414. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2295 doesn't work with some older versions of Perl. It has been changed to "my",
2296 which in any case is probably the better facility to use.
2297
229815. A really picky compiler found some instances of statements for creating
2299 error messages that either had too many or two few arguments for the format
2300 string.
2301
230216. The size of the buffer for calls to the DNS resolver has been increased
2303 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2304 for addresses that have a lot of PTR records. This alleviates a problem; it
2305 does not fully solve it.
2306
230717. A dnsdb lookup for PTR records that receives more data than will fit in the
2308 buffer now truncates the list and logs the incident, which is the same
2309 action as happens when Exim is looking up a host name and its aliases.
2310 Previously in this situation something unpredictable would happen;
2311 sometimes it was "internal error: store_reset failed".
2312
231318. If a server dropped the connection unexpectedly when an Exim client was
2314 using GnuTLS and trying to read a response, the client delivery process
2315 crashed while trying to generate an error log message.
2316
231719. If a "warn" verb in an ACL added multiple headers to a message in a single
2318 string, for example:
2319
2320 warn message = H1: something\nH2: something
2321
2322 the text was added as a single header line from Exim's point of view
2323 though it ended up OK in the delivered message. However, searching for the
2324 second and subsequent header lines using $h_h2: did not work. This has been
2325 fixed. Similarly, if a system filter added multiple headers in this way,
2326 the routers could not see them.
2327
232820. Expanded the error message when iplsearch is called with an invalid key to
2329 suggest using net-iplsearch in a host list.
2330
233121. When running tests using -bh, any delays imposed by "delay" modifiers in
2332 ACLs are no longer actually imposed (and a message to that effect is
2333 output).
2334
233522. If a "gecos" field in a passwd entry contained escaped characters, in
2336 particular, if it contained a \" sequence, Exim got it wrong when building
2337 a From: or a Sender: header from that name. A second bug also caused
2338 incorrect handling when an unquoted " was present following a character
2339 that needed quoting.
2340
234123. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2342 was not being matched caselessly.
2343
234424. Arranged for all hyphens in the exim.8 source to be escaped with
2345 backslashes.
2346
234725. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2348 properly. Recipient callout cache records were still being keyed to include
2349 the sender, even when use_sender was set false. This led to far more
2350 callouts that were necessary. The sender is no longer included in the key
2351 when use_sender is false.
2352
235326. Added "control = submission" modifier to ACLs.
2354
235527. Added the ${base62d: operator to decode base 62 numbers.
2356
235728. dnsdb lookups can now access SRV records.
2358
235929. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2360 the configuration file.
2361
236230. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2363 (-v) mode. This makes the output for a verbose queue run more intelligible.
2364
236531. Added a use_postmaster feature to recipient callouts.
2366
236732. Added the $body_zerocount variable, containing the number of binary zero
2368 bytes in the message body.
2369
237033. The time of last modification of the "new" subdirectory is now used as the
2371 "mailbox time last read" when there is a quota error for a maildir
2372 delivery.
2373
237434. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2375
237635. Added +ignore_unknown as a special item in host lists.
2377
237836. Code for decoding IPv6 addresses in host lists is now included, even if
2379 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2380 address was recognized as an IP address, but was then not correctly decoded
2381 into binary, causing unexpected and incorrect effects when compared with
2382 another IP address.
2383
2384
2385Exim version 4.34
2386-----------------
2387
2388 1. Very minor rewording of debugging text in manualroute to say "list of
2389 hosts" instead of "hostlist".
2390
2391 2. If verify=header_syntax was set, and a header line with an unqualified
2392 address (no domain) and a large number of spaces between the end of the
2393 name and the colon was received, the reception process suffered a buffer
2394 overflow, and (when I tested it) crashed. This was caused by some obsolete
2395 code that should have been removed. The fix is to remove it!
2396
2397 3. When running in the test harness, delay a bit after writing a bounce
2398 message to get a bit more predictability in the log output.
2399
2400 4. Added a call to search_tidyup() just before forking a reception process. In
2401 theory, someone could use a lookup in the expansion of smtp_accept_max_
2402 per_host which, without the tidyup, could leave open a database connection.
2403
2404 5. Added the variables $recipient_data and $sender_data which get set from a
2405 lookup success in an ACL "recipients" or "senders" condition, or a router
2406 "senders" option, similar to $domain_data and $local_part_data.
2407
2408 6. Moved the writing of debug_print from before to after the "senders" test
2409 for routers.
2410
2411 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2412 problems for message scanning, either using a data ACL, or using
2413 local_scan() because the Received: header was not generated till after they
2414 were called (in order to set the time as the time of reception completion).
2415 I have revised the way this works. The header is now generated after the
2416 body is received, but before the ACL or local_scan() are called. After they
2417 are run, the timestamp in the header is updated.
2418
2419
2420Exim version 4.33
2421-----------------
2422
2423 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2424 before starting a queue runner without re-exec. This happened only when
2425 deliver_drop_privilege was set or when the Exim user was set to root. The
2426 effect of the bug was that timeouts during subsequent deliveries caused
2427 crashes instead of being properly handled. The handler is now left at its
2428 default (and expected) setting.
2429
2430 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2431 message, again when deliver_drop_privilege is set or Exim is run as root.
2432 The bug described in (1) was not present in this case, but the tidying up
2433 of the other signals was missing. I have made the two cases consistent.
2434
2435 3. The ignore_target_hosts setting on a manualroute router was being ignored
2436 for hosts that were looked up using the /MX notation.
2437
2438 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2439 in domain lists.
2440
2441 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2442 operated on the sender address. After changing the $sender_address to <>
2443 for the sender address verify, Exim was re-instated it as the original
2444 (before rewriting) address, but remembering that it had rewritten it, so it
2445 wasn't rewriting it again. This bug also had the effect of breaking the
2446 sender address verification caching when the sender address was rewritten.
2447
2448 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2449 This has been changed so that if the ip literal address matches
2450 ignore_target_hosts, the router declines.
2451
2452 7. Added expansion conditions match_domain, match_address, and match_local_
2453 part (NOT match_host).
2454
2455 8. The placeholder for the Received: header didn't have a length field set.
2456
2457 9. Added code to Exim itself and to exim_lock to test for a specific race
2458 condition that could lead to file corruption when using MBX delivery. The
2459 issue is with the lockfile that is created in /tmp. If this file is removed
2460 after a process has opened it but before that process has acquired a lock,
2461 there is the potential for a second process to recreate the file and also
2462 acquire a lock. This could lead to two Exim processes writing to the file
2463 at the same time. The added code performs the same test as UW imapd; it
2464 checks after acquiring the lock that its file descriptor still refers to
2465 the same named file.
2466
246710. The buffer for building added header lines was of fixed size, 8192 bytes.
2468 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2469 when Exim is built.
2470
247111. Added the smtp_active_hostname option. If used, this will typically be made
2472 to depend on the incoming interface address. Because $interface_address is
2473 not set up until the daemon has forked a reception process, error responses
2474 that can happen earlier (such as "too many connections") no longer contain
2475 a host name.
2476
247712. If an expansion in a condition on a "warn" statement fails because a lookup
2478 defers, the "warn" statement is abandoned, and the next ACL statement is
2479 processed. Previously this caused the whole ACL to be aborted.
2480
248113. Added the iplsearch lookup type.
2482
248314. Added ident_timeout as a log selector.
2484
248515. Added tls_certificate_verified as a log selector.
2486
248716. Added a global option tls_require_ciphers (compare the smtp transport
2488 option of the same name). This controls incoming TLS connections.
2489
249017. I finally figured out how to make tls_require_ciphers do a similar thing
2491 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2492 before starting the TLS session.
2493
249418. Tabs are now shown as \t in -bP output.
2495
249619. If the log selector return_path_on_delivery was set, Exim crashed when
2497 bouncing a message because it had too many Received: header lines.
2498
249920. If two routers both had headers_remove settings, and the first one included
2500 a superfluous trailing colon, the final name in the first list and the
2501 first name in the second list were incorrectly joined into one item (with a
2502 colon in the middle).
2503
2504
2505Exim version 4.32
2506-----------------
2507
2508 1. Added -C and -D options to the exinext utility, mainly to make it easier
2509 to include in the automated testing, but these could be helpful when
2510 multiple configurations are in use.
2511
2512 2. The exinext utility was not formatting the output nicely when there was
2513 an alternate port involved in the retry record key, nor when there was a
2514 message id as well (for retries that were specific to a specific message
2515 and a specific host). It was also confused by IPv6 addresses, because of
2516 the additional colons they contain. I have fixed the IPv4 problem, and
2517 patched it up to do a reasonable job for IPv6.
2518
2519 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2520 delivery, the log line now contains "pipelined" if PIPELINING was used.
2521
2522 4. An SMTP transport process used to panic and die if the bind() call to set
2523 an explicit outgoing interface failed. This has been changed; it is now
2524 treated in the same way as a connect() failure.
2525
2526 5. A reference to $sender_host_name in the part of a conditional expansion
2527 that was being skipped was still causing a DNS lookup. This no longer
2528 occurs.
2529
2530 6. The def: expansion condition was not recognizing references to header lines
2531 that used bh_ and bheader_.
2532
2533 7. Added the _cache feature to named lists.
2534
2535 8. The code for checking quota_filecount in the appendfile transport was
2536 allowing one more file than it should have been.
2537
2538 9. For compatibility with Sendmail, the command line option
2539
2540 -prval:sval
2541
2542 is equivalent to
2543
2544 -oMr rval -oMs sval
2545
2546 and sets the incoming protocol and host name (for trusted callers). The
2547 host name and its colon can be omitted when only the protocol is to be set.
2548 Note the Exim already has two private options, -pd and -ps, that refer to
2549 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2550 "s", but I don't think that's a major issue.
2551
255210. A number of refactoring changes to the code, none of which should affect
2553 Exim's behaviour:
2554
2555 (a) The number of logging options was getting close to filling up the
2556 32-bit word that was used as a bit map. I have split them into two classes:
2557 those that are passed in the argument to log_write(), and those that are
2558 only ever tested independently outside of that function. These are now in
2559 separate 32-bit words, so there is plenty of room for expansion again.
2560 There is no change in the user interface or the logging behaviour.
2561
2562 (b) When building, for example, log lines, the code previously used a
2563 macro that called string_cat() twice, in order to add two strings. This is
2564 not really sufficiently general. Furthermore, there was one instance where
2565 it was actually wrong because one of the argument was used twice, and in
2566 one call a function was used. (As it happened, calling the function twice
2567 did not affect the overall behaviour.) The macro has been replaced by a
2568 function that can join an arbitrary number of extra strings onto a growing
2569 string.
2570
2571 (c) The code for expansion conditions now uses a table and a binary chop
2572 instead of a serial search (which was left over from when there were very
2573 few conditions). Also, it now recognizes conditions like "pam" even when
2574 the relevant support is not compiled in: a suitably worded error message is
2575 given if an attempt is made to use such a condition.
2576
257711. Added ${time_interval:xxxxx}.
2578
257912. A bug was causing one of the ddress fields not to be passed back correctly
2580 from remote delivery subprocesses. The field in question was not being
2581 subsequently used, so this caused to problems in practice.
2582
258313. Added new log selectors queue_time and deliver_time.
2584
258514. Might have fixed a bug in maildirsizefile handling that threw up
2586 "unexpected character" debug warnings, and recalculated the data
2587 unnecessarily. In any case, I expanded the warning message to give more
2588 information.
2589
259015. Added the message "Restricted characters in address" to the statements in
2591 the default ACL that block characters like @ and % in local parts.
2592
259316. Change 71 for release 4.31 proved to be much less benign that I imagined.
2594 Three changes have been made:
2595
2596 (a) There was a serious bug; a negative response to MAIL caused the whole
2597 recipient domain to be cached as invalid, thereby blocking all messages
2598 to all local parts at the same domain, from all senders. This bug has
2599 been fixed. The domain is no longer cached after a negative response to
2600 MAIL if the sender used is not empty.
2601
2602 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2603 been restored.
2604
2605 (c) A new callout option, "use_sender" has been added for people who want
2606 the modified behaviour.
2607
2608
2609Exim version 4.31
2610-----------------
2611
2612 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
2613 Larry Rosenman.
2614
2615 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
2616 indeed breaks things for older releases.
2617
2618 3. Added additional logging to the case where there is a problem reading data
2619 from a filter that is running in a subprocess using a pipe, in order to
2620 try to track down a specific problem.
2621
2622 4. Testing facility fudge: when running in the test harness and attempting
2623 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
2624 getting "No route to host". Convert this to a timeout.
2625
2626 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
2627 warning.
2628
2629 6. Some OS don't have socklen_t but use size_t instead. This affects the
2630 fifth argument of getsockopt() amongst other things. This is now
2631 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
2632 can be set for individual OS. I have set it for SunOS5, OSF1, and
2633 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
2634 some earlier ones do not.
2635
2636 7. Change 4.30/15 was not doing the test caselessly.
2637
2638 8. The standard form for an IPv6 address literal was being rejected by address
2639 parsing in, for example, MAIL and RCPT commands. An example of this kind of
2640 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
2641 this, as well as the form without the "IPv6" on the front (but only when
2642 address literals are enabled, of course).
2643
2644 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
2645
264610. Exim crashed if a message with an empty sender address specified by -f
2647 encountered a router with an errors_to setting. This could be provoked only
2648 by a command such as
2649
2650 exim -f "" ...
2651
2652 where an empty string was supplied; "<>" did not hit this bug.
2653
265411. Installed PCRE release 4.5.
2655
265612. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
2657 remained set. It is now erased.
2658
265913. exiqgrep wasn't working on MacOS X because it didn't correctly compute
2660 times from message ids (which are base 36 rather than the normal 62).
2661
266214. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
2663 were being counted as actual protocol errors, and logged if the log
2664 selector +smtp_protocol_error was set. One cannot be perfect in this test,
2665 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
2666 and DATA following a set of rejected RCPTs do not count as protocol errors.
2667 In other words, Exim assumes they were pipelined, though this may not
2668 actually be the case. Of course, in all cases the client gets an
2669 appropriate error code.
2670
267115. If a lookup fails in an ACL condition, a message about the failure may
2672 be available; it is used if testing the ACL cannot continue, because most
2673 such messages specify what the cause of the deferral is. However, some
2674 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
2675 that caused an old message to be retained and used if a later statement
2676 caused a defer, replacing the real cause of the deferral.
2677
267816. If an IP address had so many PTR records that the DNS lookup buffer
2679 was not large enough to hold them, Exim could crash while trying to process
2680 the truncated data. It now detects and logs this case.
2681
268217. Further to 4.21/58, another change has been made: if (and only if) the
2683 first line of a message (the first header line) ends with CRLF, a bare LF
2684 in a subsequent header line has a space inserted after it, so as not to
2685 terminate the header.
2686
268718. Refactoring: tidied an ugly bit of code in appendfile that copied data
2688 unnecessarily, used atoi() instead of strtol(), and didn't check the
2689 termination when getting file sizes from file names by regex.
2690
269119. Completely re-implemented the support for maildirsize files, in the light
2692 of a number of problems with the previous contributed implementation
2693 (4.30/29). In particular:
2694
2695 . If the quota is zero, the maildirsize file is maintained, but no quota is
2696 imposed.
2697
2698 . If the maildir directory does not exist, it is created before any attempt
2699 to write a maildirsize file.
2700
2701 . The quota value in the file is just a cache; if the quota is changed in
2702 the transport, the new value overrides.
2703
2704 . A regular expression is available for excluding directories from the
2705 count.
2706
270720. The autoreply transport checks the characters in options that define the
2708 message's headers; it allows continued headers, but it was checking with
2709 isspace() after an embedded newline instead of explicitly looking for a
2710 space or a tab.
2711
271221. If all the "regular" hosts to which an address was routed had passed their
2713 expiry times, and had not reached their retry times, the address was
2714 bounced, even if fallback hosts were defined. Now Exim should go on to try
2715 the fallback hosts.
2716
271722. Increased buffer sizes in the callout code from 1024 to 4096 to match the
2718 equivalent code in the SMTP transport. Some hosts send humungous responses
2719 to HELO/EHLO, more than 1024 it seems.
2720
272123. Refactoring: code in filter.c used (void *) for "any old type" but this
2722 gives compiler warnings in some environments. I've now done it "properly",
2723 using a union.
2724
272524. The replacement for inet_ntoa() that is used with gcc on IRIX systems
2726 (because of problems with the built-in one) was declared to return uschar *
2727 instead of char *, causing compiler failure.
2728
272925. Fixed a file descriptor leak when processing alias/forward files.
2730
273126. Fixed a minor format string issue in dbfn.c.
2732
273327. Typo in exim.c: ("dmbnz" for "dbmnz").
2734
273528. If a filter file refered to $h_xxx or $message_headers, and the headers
2736 contained RFC 2047 "words", Exim's memory could, under certain conditions,
2737 become corrupted.
2738
273929. When a sender address is verified, it is cached, to save repeating the test
2740 when there is more than one recipient in a message. However, when the
2741 verification involves a callout, it is possible for different callout
2742 options to be set for different recipients. It is too complicated to keep
2743 track of this in the cache, so now Exim always runs a verification when a
2744 callout is required, relying on the callout cache for the optimization.
2745 The overhead is duplication of the address routing, but this should not be
2746 too great.
2747
274830. Fixed a bug in callout caching. If a RCPT command caused the sender address
2749 to be verified with callout=postmaster, and the main callout worked but the
2750 postmaster check failed, the verification correctly failed. However, if a
2751 subsequent RCPT command asked for sender verification *without* the
2752 postmaster check, incorrect caching caused this verification also to fail,
2753 incorrectly.
2754
275531. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
2756 it was not caching the DNS options (qualify_single, search_parents) that
2757 were used when the lookup failed. A subsequent lookup with different
2758 options therefore always gave the same answer, though there were cases
2759 where it should not have. (Example: a "domains = !$mx_any" option on a
2760 dnslookup router: the "domains" option is always processed without any
2761 widening, but the router might have qualify_single set.) Now Exim uses the
2762 cached value only when the same options are set.
2763
276432. Added John Jetmore's "exipick" utility to the distribution.
2765
276633. GnuTLS: When an attempt to start a TLS session fails for any reason other
2767 than a timeout (e.g. a certificate is required, and is not provided), an
2768 Exim server now closes the connection immediately. Previously it waited for
2769 the client to close - but if the client is SSL, it seems that they each
2770 wait for each other, leading to a delay before one of them times out.
2771
277234: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
2773 maintained 0.8.x compatibility because I don't think many are using it, and
2774 it is clearly obsolete.
2775
277635. Added TLS support for CRLs: a tls_crl global option and one for the smtp
2777 transport.
2778
277936. OpenSSL: $tls_certificate_verified was being set to 1 even if the
2780 client certificate was expired. A simple patch fixes this, though I don't
2781 understand the full logic of why the verify callback is called multiple
2782 times.
2783
278437. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
2785 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
2786 which causes problems with some clients (such as the Certicom SSL Plus
2787 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
2788 disables the coutermeasure allowing Eudora to connect."
2789
279038. Exim was not checking that a write() to a log file succeeded. This could
2791 lead to Bad Things if a log got too big, in particular if it hit a file
2792 size limit. Exim now panics and dies if it cannot write to a log file, just
2793 as it does if it cannot open a log file.
2794
279539. Modified OS/Makefile-Linux so that it now contains
2796
2797 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
2798
2799 The two -D definitions ensure that Exim is compiled with large file
2800 support, which makes it possible to handle log files that are bigger than
2801 2^31.
2802
280340. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
2804 instance) a domain was checked against a named list that involved a lookup,
2805 causing $domain_data to be set, then another domain was checked against the
2806 same list, then the first domain was re-checked, the value of $domain_data
2807 after the final check could be wrong. In particular, if the second check
2808 failed, it could be set empty. This bug probably also applied to
2809 $localpart_data.
2810
281141. The strip_trailing_dot option was not being applied to the address given
2812 with the -f command-line option.
2813
281442. The code for reading a message's header from the spool was incrementing
2815 $received_count, but never initializing it. This meant that the value was
2816 incorrect (doubled) while delivering a message in the same process in which
2817 it was received. In the most common configuration of Exim, this never
2818 happens - a fresh exec is done - but it can happen when
2819 deliver_drop_privilege is set.
2820
282143. When Exim logs an SMTP synchronization error - client data sent too soon -
2822 it now includes up to 150 characters of the unexpected data in the log
2823 line.
2824
282544. The exim_dbmbuild utility uses fixed size buffers for reading input lines
2826 and building data strings. The size of both of these buffers was 10 000
2827 bytes - far larger than anybody would *ever* want, thought I. Needless to
2828 say, somebody hit the limit. I have increased the maximum line length to
2829 20 000 and the maximum data length of concatenated lines to 100 000. I have
2830 also fixed two bugs, because there was no checking on these buffers. Tsk,
2831 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
2832 buffer is too small.
2833
283445. The exim_dbmbuild utility did not support quoted keys, as Exim does in
2835 lsearch lookups. Now it does.
2836
283746. When parsing a route_list item in a manualroute router, a fixed-length
2838 buffer was used for the list of hosts. I made this 1024 bytes long,
2839 thinking that nobody would ever have a list of hosts that long. Wrong.
2840 Somebody had a whole pile of complicated expansion conditions, and the
2841 string was silently truncated, leading to an expansion error. It turns out
2842 that it is easier to change to an unlimited length (owing to other changes
2843 that have happened since this code was originally written) than to build
2844 structure for giving a limitation error. The length of the item that
2845 expands into the list of hosts is now unlimited.
2846
284747. The lsearch lookup could not handle data where the length of text line was
2848 more than 4095 characters. Such lines were truncated, leading to shortened
2849 data being returned. It should now handle lines of any length.
2850
285148. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
2852 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
2853 ACL").
2854
285549. Cosmetic tidy to scripts like exicyclog that are generated by globally
2856 replacing strings such as BIN_DIRECTORY in a source file: the replacement
2857 no longer happens in comment lines. A list of replacements is now placed
2858 at the head of all of the source files, except those whose only change is
2859 to replace PERL_COMMAND in the very first #! line.
2860
286150. Replaced the slow insertion sort in queue.c, for sorting the list of
2862 messages on the queue, with a bottom-up merge sort, using code contributed
2863 by Michael Haardt. This should make operations like -bp somewhat faster on
2864 large queues. It won't affect queue runners, except when queue_run_in_order
2865 is set.
2866
286751. Installed eximstats 1.31 in the distribution.
2868
286952. Added support for SRV lookups to the dnslookup router.
2870
287153. If an ACL referred to $message_body or $message_body_end, the value was not
2872 reset for any messages that followed in the same SMTP session.
2873
287454. The store-handling optimization for building very long strings was not
2875 differentiating between the different store pools. I don't think this
2876 actually made any difference in practice, but I've tidied it.
2877
287855. While running the routers to verify a sender address, $sender_address
2879 was still set to the sender address. This is wrong, because when routing to
2880 send a bounce to the sender, it would be empty. Therefore, I have changed
2881 it so that, while verifying a sender address, $sender_address is set to <>.
2882 (There is no change to what happens when verifying a recipient address.)
2883
288456. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
2885 target A or AAAA records (if not already returned) without resetting the
2886 qualify_single or search_parents options of the DNS resolver. These are
2887 inappropriate in this case because the targets of MX and SRV records must
2888 be FQDNs. A broken DNS record could cause trouble if it happened to have a
2889 target that, when qualified, matched something in the local domain. These
2890 two options are now turned off when doing these lookups.
2891
289257. It seems that at least some releases of Reiserfs (which does not have the
2893 concept of a fixed number of inodes) returns zero and not -1 for the
2894 number of available inodes. This interacted badly with check_spool_inodes,
2895 which assumed that -1 was the "no such thing" setting. What I have done is
2896 to check that the total number of inodes is greater than zero before doing
2897 the test of how many are available.
2898
289958. When a "warn" ACL statement has a log_message modifier, the message is
2900 remembered, and not repeated. This is to avoid a lot of repetition when a
2901 message has many recipients that cause the same warning to be written.
2902 Howewer, Exim was preserving the list of already written lines for an
2903 entire SMTP session, which doesn't seem right. The memory is now reset if a
2904 new message is started.
2905
290659. The "rewrite" debugging flag was not showing the result of rewriting in the
2907 debugging output unless log_rewrite was also set.
2908
290960. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
2910 of (int)(handle) when we know that handle contains (void *)(-1).
2911
291261. The Exim daemon panic-logs an error return when it closes the incoming
2913 connection. However "connection reset by peer" seems to be common, and
2914 isn't really an error worthy of noting specially, so that particular error
2915 is no long logged.
2916
291762. When Exim is trying to find all the local interfaces, it used to panic and
2918 die if the ioctl to get the interface flags failed. However, it seems that
2919 on at least one OS (Solaris 9) it is possible to have an interface that is
2920 included in the list of interfaces, but for which you get a failure error
2921 for this call. This happens when the interface is not "plumbed" into a
2922 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
2923 failure of the "get flags" call assumes that the interface is down.
2924
292563. Added a ${eval10: operator, which assumes all numbers are decimal. This
2926 makes life easier for people who are doing arithmetic on fields extracted
2927 from dates, where you often get leading zeros that should not be
2928 interpreted as octal.
2929
293064. Added qualify_domain to the redirect router, to override the global
2931 setting.
2932
293365. If a pathologically long header line contained very many addresses (the
2934 report of this problem mentioned 10 000) and each of them was rewritten,
2935 Exim could use up a very large amount of memory. (It kept on making new
2936 copies of the header line as it rewrote, and never released the old ones.)
2937 At the expense of a bit more processing, the header rewriting function has
2938 been changed so that it no longer eats memory in this way.
2939
294066. The generation of the Received: header has been moved from the time that a
2941 message starts to be received, to the time that it finishes. The timestamp
2942 in the Received: header should now be very close to that of the <= log
2943 line. There are two side-effects of this change:
2944
2945 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
2946 logged header lines no longer include the local Received: line, because
2947 it has not yet been created. The same applies to a copy of the message
2948 that is returned to a non-SMTP sender when a message is rejected.
2949
2950 (b) When a filter file is tested using -bf, no additional Received: header
2951 is added to the test message. After some thought, I decided that this
2952 is a bug fix.
2953
2954 This change does not affect the value of $received_for. It is still set
2955 after address rewriting, but before local_scan() is called.
2956
295767. Installed the latest Cygwin-specific files from the Cygwin maintainer.
2958
295968. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
2960 gave an unhelpful panic error message, and a defer error. I have managed to
2961 change this behaviour so that it now rejects any supplied certificate,
2962 which seems right, as the list of acceptable certificates is empty.
2963
296469. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
2965 gave an unhelpful defer error. I have not managed to make this reject any
2966 supplied certificates, but the error message it gives is "no certificate
2967 supplied", which is not helpful.
2968
296970. exigrep's output now also includes lines that are not associated with any
2970 message, but which match the given pattern. Implemented by a patch from
2971 Martin Sluka, which also tidied up the Perl a bit.
2972
297371. Recipient callout verification, like sender verification, was using <> in
2974 the MAIL FROM command. This isn't really the right thing, since the actual
2975 sender may affect whether the remote host accepts the recipient or not. I
2976 have changed it to use the actual sender in the callout; this means that
2977 the cache record is now keyed on a recipient/sender pair, not just the
2978 recipient address. There doesn't seem to be a real danger of callout loops,
2979 since a callout by the remote host to check the sender would use <>.
2980 [SEE ABOVE: changed after hitting problems.]
2981
298272. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
2983 temporary errors. However, in the case of such a code being given after
2984 the end of a data transmission (i.e. after ".") Exim was failing to write
2985 a retry record for the message. (Yes, there was some broken host that was
2986 actually sending 8xx at this point.)
2987
298873. An unknown lookup type in a host list could cause Exim to panic-die when
2989 the list was checked. (An example that provoked this was putting <; in the
2990 middle of a list instead of at the start.) If this happened during a DATA
2991 ACL check, a -D file could be left lying around. This kind of configuration
2992 error no longer causes Exim to die; instead it causes a defer errror. The
2993 incident is still logged to the main and panic logs.
2994
299574. Buglet left over from Exim 3 conversion. The message "too many messages
2996 in one connection" was written to the rejectlog but not the mainlog, except
2997 when address rewriting (yes!) was being logged.
2998
299975. Added write_rejectlog option.
3000
300176. When a system filter was run not as root (that is, when system_filter_user
3002 was set), the values of the $n variables were not being returned to the
3003 main process; thus, they were not subsequently available in the $sn
3004 variables.
3005
300677. Added +return_path_on_delivery log selector.
3007
300878. A connection timeout was being treated differently from recipients deferred
3009 when testing hosts_max_try with a message that was older than the host's
3010 retry timeout. (The host should not be counted, thus allowing all hosts to
3011 be tried at least once before bouncing.) This may have been the cause of an
3012 occasionally reported bug whereby a message would remain on the queue
3013 longer than the retry timeout, but would be bounced if a delivery was
3014 forced. I say "may" because I never totally pinned down the problem;
3015 setting up timeout/retry tests is difficult. See also the next item.
3016
301779. The ultimate address timeout was not being applied to errors that involved
3018 a combination of host plus message (for example, a timeout on a MAIL
3019 command). When an address resolved to a number of possible hosts, and they
3020 were not all tried for each delivery (e.g. because of hosts_max_try), a
3021 message could remain on the queue longer than the retry timeout.
3022
302380. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3024 Haardt.
3025
302681. Fixed an obscure SMTP outgoing bug which required at least the following
3027 conditions: (a) there was another message waiting for the same server;
3028 (b) the server returned 5xx to all RCPT commands in the first message so
3029 that the message was not completed; (c) the server dropped the connection
3030 or gave a negative response to the RSET that Exim sends to abort the
3031 transaction. The observed case was a dropped connection after DATA that had
3032 been sent in pipelining mode. That is, the server had advertised PIPELINING
3033 but was not implementing it correctly. The effect of the bug was incorrect
3034 behaviour, such as trying another host, and this could lead to a crash.
3035
3036
3037Exim version 4.30
3038-----------------
3039
3040 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3041 and daemon.c were passed as pointers to ints; they should have been
3042 pointers to socklen_t variables (which are typically unsigned ints).
3043
3044 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3045 fixed.
3046
3047 3. Fixed a really odd bug that affected only the testing scheme; patching a
3048 certain fixed string in the binary changed the value of another string that
3049 happened to be identical to the end of the original first string.
3050
3051 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3052 name", it returns that address as the IP address. On some operating
3053 systems (e.g. Solaris), it also passes back the IP address string as the
3054 "host name". However, on others (e.g. Linux), it passes back an empty
3055 string. Exim wasn't checking for this, and was changing the host name to an
3056 empty string, assuming it had been canonicized.
3057
3058 5. Although rare, it is permitted to have more than one PTR record for a given
3059 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3060 all the names associated with an address, because they do in Solaris.
3061 However, it seems that they do not in Linux for data that comes from the
3062 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3063 I found this out when I moved to a new Linux workstation and tried to run
3064 the Exim test suite.
3065
3066 To get round this problem I have changed the code so that it now does its
3067 own call to the DNS to look up PTR records when searching for a host name.
3068 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3069 addresses that are only in /etc/hosts are still found.
3070
3071 This behaviour is, however, controlled by an option called host_lookup_
3072 order, which defaults to "bydns:byaddr". If people want to use the other
3073 order, or indeed, just use one or the other means of lookup, they can
3074 specify it in this variable.
3075
3076 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3077 some operating systems, this comes back from gethostbyaddr() as an empty
3078 string, and this is what Exim used to test for. However, it seems that in
3079 other systems, "." is yielded. Exim now tests for this case too.
3080
3081 7. The values of check_spool_space and check_log_space are now held internally
3082 as a number of kilobytes instead of an absolute number of bytes. If a
3083 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3084 kilobyte. This means that much larger values can be stored.
3085
3086 8. Exim monitor: an attempt to get the action menu when not actually pointing
3087 at a message produces an empty menu entitled "No message selected". This
3088 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3089 no entries in it ("Shell widget menu has zero width and/or height"). So I
3090 have added a single, blank menu entry in this case.
3091
3092 9. Added ${quote_local_part.
3093
309410. MIME decoding is now applied to the contents of Subject: header lines when
3095 they are logged.
3096
309711. Now that a reference to $sender_host_address automatically causes a reverse
3098 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3099 host lookup before query-style lookups in lists that might use this
3100 variable. This has therefore been abolished, and the "net-" prefix is no
3101 longer necessary for query-style lookups.
3102
310312. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3104 have been a typo for LFLAGS, so it has been changed.
3105
310613. The install script calls Exim with "-C /dev/null" in order to find the
3107 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3108 to be output. Howeve, since Exim outputs its version number before the
3109 error, it didn't break the script. It just looked ugly. I fixed this by
3110 always allowing "-C /dev/null" if the caller is root.
3111
311214. Ignore overlarge ACL variable number when reading spool file - insurance
3113 against a later release with more variables having written the file.
3114
311515. The standard form for an IPv6 address literal was being rejected by EHLO.
3116 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3117 this, as well as the form without the "IPv6" on the front.
3118
311916. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3120 OS/Makefile-Darwin file.
3121
312217. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3123 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3124
312518. After change 4.21/52, "%ld" was used to format the contents of the $inode
3126 variable. However, some OS use ints for inodes. I've added cast to long int
3127 to get rid of the compiler warning.
3128
312919. I had forgotten to lock out "/../" in configuration file names when
3130 ALT_CONFIG_PREFIX was set.
3131
313220. Routers used for verification do not need to specify transports. However,
3133 if such a router generated a host list, and callout was configured, Exim
3134 crashed, because it could not find a port number from the (non-existent)
3135 transport. It now assumes port 25 in this circumstance.
3136
313721. Added the -t option to exigrep.
3138
313922. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3140 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3141 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3142 them is set, LOOKUP_LSEARCH is forced.
3143
314423. "exim -bV" now outputs a list of lookups that are included in the binary.
3145
314624. Added sender and host information to the "rejected by local_scan()" log
3147 line; previously there was no indication of these.
3148
314925. Added .include_if_exists.
3150
315126. Change 3.952/11 added an explicit directory sync on top of a file sync for
3152 Linux. It turns out that not all file systems support this. Apparently some
3153 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3154 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3155 not supported on the file descriptor, is now ignored when Exim is trying to
3156 sync a directory. This applies only to Linux.
3157
315827. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3159
316028. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3161 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3162 this.
3163
316429. Added support for maildirsize files from supplied patch (modified a bit).
3165
316630. The use of :fail: followed by an empty string could lead Exim to respond to
3167 sender verification failures with (e.g.):
3168
3169 550 Verification failed for <xxx>
3170 550 Sender verify failed
3171
3172 where the first response line was missing the '-' that indicates it is not
3173 the final line of the response.
3174
317531. The loop for finding the name of the user that called Exim had a hardwired
3176 limit of 10; it now uses the value of finduser_retries, which is used for
3177 all other user lookups.
3178
317932. Added $received_count variable, available in data and not_smtp ACLs, and at
3180 delivery time.
3181
318233. Exim was neglecting to zero errno before one call of strtol() when
3183 expanding a string and expecting an integer value. On some systems this
3184 resulted in spurious "integer overflow" errors. Also, it was casting the
3185 result into an int without checking.
3186
318734. Testing for a connection timeout using "timeout_connect" in the retry rules
3188 did not work. The code looks as if it has *never* worked, though it appears
3189 to have been documented since at least releast 1.62. I have made it work.
3190
319135. The "timeout_DNS" error in retry rules, also documented since at least
3192 1.62, also never worked. As it isn't clear exactly what this means, and
3193 clearly it isn't a major issue, I have abolished the feature by treating it
3194 as "timeout", and writing a warning to the main and panic logs.
3195
319636. The display of retry rules for -brt wasn't always showing the error code
3197 correctly.
3198
319937. Added new error conditions to retry rules: timeout_A, timeout_MX,
3200 timeout_connect_A, timeout_connect_MX.
3201
320238. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3203 to the empty sender.
3204
320539. The daemon was not analysing the content of -oX till after it had closed
3206 stderr and disconnected from the controlling terminal. This meant that any
3207 syntax errors were only noted on the panic log, and the return code from
3208 the command was 0. By re-arranging the code a little, I've made the
3209 decoding happen first, so such errors now appear on stderr, and the return
3210 code is 1. However, the actual setting up of the sockets still happens in
3211 the disconnected process, so errors there are still only recorded on the
3212 panic log.
3213
321440. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3215 connections (as happens on some IP stacks) was logged at start up time as
3216 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3217 it from "IPv6 and IPv4", which means that two separate sockets are being
3218 used.
3219
322041. The debug output for gethostbyname2() or getipnodebyname() failures now
3221 says whether AF_INET or AF_INET6 was passed as an argument.
3222
322342. Exiwhat output was messed up when time zones were included in log
3224 timestamps.
3225
322643. Exiwhat now gives more information about the daemon's listening ports,
3227 and whether -tls-on-connect was used.
3228
322944. The "port" option of the smtp transport is now expanded.
3230
323145. A "message" modifier in a "warn" statement in a non-message ACL was being
3232 silently ignored. Now an error message is written to the main and panic
3233 logs.
3234
323546. There's a new ACL modifier called "logwrite" which writes to a log file
3236 as soon as it is encountered.
3237
323847. Added $local_user_uid and $local_user_gid at routing time.
3239
324048. Exim crashed when trying to verify a sender address that was being
3241 rewritten to "<>".
3242
324349. Exim was recognizing only a space character after ".include". It now also
3244 recognizes a tab character.
3245
324650. Fixed several bugs in the Perl script that creates the exim.8 man page by
3247 extracting the relevant information from the specification. The man page no
3248 longer contains scrambled data for the -d option, and I've added a section
3249 at the front about calling Exim under different names.
3250
325151. Added "extra_headers" argument to the "mail" command in filter files.
3252
325352. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
3254 crash.
3255
325653. Installed eximstats 1.29.
3257
325854. Added transport_filter_timeout as a generic transport option.
3259
326055. Exim no longer adds an empty Bcc: header to messages that have no To: or
3261 Cc: header lines. This was required by RFC 822, but it not required by RFC
3262 2822.
3263
326456. Exim used to add From:, Date:, and Message-Id: header lines to any
3265 incoming messages that did not have them. Now it does so only if the
3266 message originates locally, that is, if there is no associated remote host
3267 address. When Resent- header lines are present, this applies to the Resent-
3268 lines rather than the non-Resent- lines.
3269
327057. Drop incoming SMTP connection after too many syntax or protocol errors. The
3271 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
3272
327358. Messages for configuration errors now include the name of the main
3274 configuration file - useful now that there may be more than one file in a
3275 list (.included file names were always shown).
3276
327759. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
3278 for those rare installations that do not start the daemon as root or run it
3279 setuid root. I've cut out the call to initgroups() if the daemon is not
3280 root at that time.
3281
328260. The Exim user and group can now be bound into the binary as text strings
3283 that are looked up at the start of Exim's processing.
3284
328561. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
3286
328762. Added $mailstore_basename variable.
3288
328963. Installed patch to sieve.c from Michael Haardt.
3290
329164. When Exim failed to open the panic log after failing to open the main log,
3292 the original message it was trying to log was written to stderr and debug
3293 output, but if they were not available (the usual case in production), it
3294 was lost. Now it is written to syslog before the two lines that record the
3295 failures to open the logs.
3296
329765. Users' Exim filters run in subprocesses under the user's uid. It is
3298 possible for a "deliver" command or an alias in a "personal" command to
3299 provoke an address rewrite. If logging of address rewriting is configured,
3300 this fails because the process is not running as root or exim. There may be
3301 a better way of dealing with this, but for the moment (because 4.30 needs
3302 to be released), I have disabled address rewrite logging when running a
3303 filter in a non-root, non-exim process.
3304
3305
3306Exim version 4.24
3307-----------------
3308
3309 1. The buildconfig auxiliary program wasn't quoting the value set for
3310 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
3311 not defined. This bug was masked in 4.22 by the effect that was fixed in
3312 change 4.23/1.
3313
3314 2. Some messages that were rejected after a message id was allocated were
3315 shown as "incomplete" by exigrep. It no longer does this for messages that
3316 are rejected by local_scan() or the DATA or non-SMTP ACLs.
3317
3318 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
3319 have allow_domain_literals set, the ID did not get logged in the <= line.
3320 Domain literals are now always recognized in Message-ID: header lines.
3321
3322 4. The first argument for a ${extract expansion item is the key name or field
3323 number. Leading and trailing spaces in this item were not being ignored,
3324 causing some misleading effects.
3325
3326 5. When deliver_drop_privilege was set, single queue runner processes started
3327 manually (i.e. by the command "exim -q") or by the daemon (which uses the
3328 same command in the process it spins off) were not dropping privilege.
3329
3330 6. When the daemon running as "exim" started a queue runner, it always
3331 re-executed Exim in the spun-off process. This is a waste of effort when
3332 deliver_drop_privilege is set. The new process now just calls the
3333 queue-runner function directly.
3334
3335
3336Exim version 4.23
3337-----------------
3338
3339 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
3340 HEADERS_CHARSET.
3341
3342 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
3343 ignored. Though the use of -oP was forcing the writing of a pid file, it
3344 was always written to the default place.
3345
3346 3. If the message "no IP address found for host xxxx" is generated during
3347 incoming verification, it is now followed by identification of the incoming
3348 connection (so you can more easily find what provoked it).
3349
3350 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
3351
3352 5. Added some features to "harden" Exim a bit more against certain attacks:
3353
3354 (a) There is now a build-time option called FIXED_NEVER_USERS that can
3355 be put in Local/Makefile. This is like the never_users runtime option,
3356 but it cannot be overridden. The default setting is "root".
3357
3358 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
3359 prefix string with which any file named in a -C command line option
3360 must start.
3361
3362 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
3363 is retained for -C and -D only if the caller of Exim is root. Without
3364 it, the exim user may also use -C and -D and retain privilege.
3365
3366 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
3367 command line option is disabled.
3368
3369 6. Macro names set by the -D option must start with an upper case letter, just
3370 like macro names defined in the configuration file.
3371
3372 7. Added "dereference=" facility to LDAP.
3373
3374 8. Two instances of the typo "uknown" in the source files are fixed.
3375
3376 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
3377 the Configure-Makefile script screwed up while processing it.
3378
337910. Incorporated PCRE 4.4.
3380
338111. The SMTP synchronization check was not operating right at the start of an
3382 SMTP session. For example, it could not catch a HELO sent before the client
3383 waited for the greeting. There is now a check for outstanding input at the
3384 point when the greeting is written. Because of the duplex, asynchronous
3385 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
3386 way, but not yet received, when the check is performed.
3387
338812. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
3389 on TCP/IP sockets, because this apparently causes some broken clients to
3390 timeout.
3391
339213. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
3393 unchanged) from the Cygwin maintainer.
3394
339514. The code for -bV that shows what is in the binary showed "mbx" when maildir
3396 was supported instead of testing for mbx. Effectively a typo.
3397
339815. The spa authenticator server code was not checking that the input it
3399 received was valid base64.
3400
340116. The debug output line for the "set" modifier in ACLs was not showing the
3402 name of the variable that was being set.
3403
340417. Code tidy: the variable type "vtype_string" was never used. Removed it.
3405
340618. Previously, a reference to $sender_host_name did not cause a DNS reverse
3407 lookup on its own. Something else was needed to trigger the lookup. For
3408 example, a match in host_lookup or the need for a host name in a host list.
3409 Now, if $sender_host_name is referenced and the host name has not yet been
3410 looked up, a lookup is performed. If the lookup fails, the variable remains
3411 empty, and $host_lookup_failed is set to "1".
3412
341319. Added "eqi" as a case-independent comparison operator.
3414
341520. The saslauthd authentication condition could segfault if neither service
3416 nor realm was specified.
3417
341821. If an overflowing value such as "2048M" was set for message_size_limit, the
3419 error message that was logged was misleading, and incoming SMTP
3420 connections were dropped. The message is now more accurate, and temporary
3421 errors are given to SMTP connections.
3422
342322. In some error situations (such as 21 above) Exim rejects all SMTP commands
3424 (except RSET) with a 421 error, until QUIT is received. However, it was
3425 failing to send a response to QUIT.
3426
342723. The HELO ACL was being run before the code for helo_try_verify_hosts,
3428 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
3429 ACL is now run after the helo_try_verify_hosts code.
3430
343124. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
3432 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
3433 case-independent, so other case variants are also recognized). Apparently
3434 some systems use these upper case variants.
3435
343625. If more than two messages were waiting for the same host, and a transport
3437 filter was specified for the transport, Exim sent two messages over the
3438 same TCP/IP connection, and then failed with "socket operation on non-
3439 socket" when it tried to send the third.
3440
344126. Added Exim::debug_write and Exim::log_write for embedded Perl use.
3442
344327. The extern definition of crypt16() in expand.c was not being excluded when
3444 the OS had its own crypt16() function.
3445
344628. Added bounce_return_body as a new option, and bounce_return_size_limit
3447 as a preferred synonym for return_size_limit, both as an option and as an
3448 expansion variable.
3449
345029. Added LIBS=-liconv to OS/Makefile-OSF1.
3451
345230. Changed the default configuration ACL to relax the local part checking rule
3453 for addresses that are not in any local domains. For these addresses,
3454 slashes and pipe symbols are allowed within local parts, but the sequence
3455 /../ is explicitly forbidden.
3456
345731. SPA server authentication was not clearing the challenge buffer before
3458 using it.
3459
346032. log_message in a "warn" ACL statement was writing to the reject log as
3461 well as to the main log, which contradicts the documentation and doesn't
3462 seem right (because no rejection is happening). So I have stopped it.
3463
346433. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
3465 However, I am unable to do any testing of this.
3466
346734. Fixed an infelicity in the appendfile transport. When checking directories
3468 for a mailbox, to see if any needed to be created, it was accidentally
3469 using path names with one or more superfluous leading slashes; tracing
3470 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
3471
347235. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
3473 contents are added to the log line that is written for every discarded
3474 recipient. (Previously a log_message setting was ignored.)
3475
347636. The ${quote: operator now quotes the string if it is empty.
3477
347837. The install script runs exim in order to find its version number. If for
3479 some reason other than non-existence or emptiness, which it checks, it
3480 could not run './exim', it was installing it with an empty version number,
3481 i.e. as "exim-". This error state is now caught, and the installation is
3482 aborted.
3483
348438. An argument was missing from the function that creates an error message
3485 when Exim fails to connect to the socket for saslauthd authentication.
3486 This could cause Exim to crash, or give a corrupted message.
3487
348839. Added isip, isip4, and isip6 to ${if conditions.
3489
349040. The ACL variables $acl_xx are now saved with the message, and can be
3491 accessed later in routers, transports, and filters.
3492
349341. The new lookup type nwildlsearch is like wildlsearch, except that the key
3494 strings in the file are not string-expanded.
3495
349642. If a MAIL command specified a SIZE value that was too large to fit into an
3497 int variable, the check against message_size_limit failed. Such values are
3498 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
3499 day this will have to be increased, but I don't think I want to be around
3500 when emails are that large.
3501
3502
3503
3504Exim version 4.22
3505-----------------
3506
3507 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
3508 iconv() is not standard in FreeBSD.
3509
3510 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with
3511 IPv6 enabled. The observed symptom was a segmentation fault on return from
3512 the function os_common_find_running_interfaces() in src/os.c.
3513
3514 3. In the check_special_case() function in daemon.c I had used "errno" as an
3515 argument name, which causes warnings on some systems. This was basically a
3516 typo, since it was named "eno" in the comments!
3517
3518 4. The code that waits for the clock to tick (at a resolution of some fraction
3519 of a second) so as to ensure message-id uniqueness was always waiting for
3520 at least one whole tick, when it could have waited for less. [This is
3521 almost certainly not relevant at current processor speeds, where it is
3522 unlikely to ever wait at all. But we try to future-proof.]
3523
3524 5. The function that sleeps for a time interval that includes fractions of a
3525 second contained a race. It did not block SIGALRM between setting the
3526 timer, and suspending (a couple of lines later). If the interval was short
3527 and the sigsuspend() was delayed until after it had expired, the suspension
3528 never ended. On busy systems this could lead to processes getting stuck for
3529 ever.
3530
3531 6. Some uncommon configurations may cause a lookup to happen in a queue runner
3532 process, before it forks any delivery processes. The open lookup caching
3533 mechanism meant that the open file or database connection was passed into
3534 the delivery process. The problem was that delivery processes always tidy
3535 up cached lookup data. This could cause a problem for the next delivery
3536 process started by the queue runner, because the external queue runner
3537 process does not know about the closure. So the next delivery process
3538 still has data in the lookup cache. In the case of a file lookup, there was
3539 no problem because closing a file descriptor in a subprocess doesn't affect
3540 the parent. However, if the lookup was caching a connection to a database,
3541 the connection was closed, and the second delivery process was likely to
3542 see errors such as "PGSQL: query failed: server closed the connection
3543 unexpectedly". The problem has been fixed by closing all cached lookups
3544 in a queue runner before running a delivery process.
3545
3546 7. Compiler warning on Linux for the second argument of iconv(), which doesn't
3547 seem to have the "const" qualifier which it has on other OS. I've
3548 parameterised it.
3549
3550 8. Change 4.21/2 was too strict. It is only if there are two authenticators
3551 *of the same type* (client or server) with the same public name that an
3552 error should be diagnosed.
3553
3554 9. When Exim looked up a host name for an IP address, but failed to find the
3555 original IP address when looking up the host name (a safety check), it
3556 output the message "<ip address> does not match any IP for NULL", which was
3557 confusing, to say the least. The bug was that the host name should have
3558 appeared instead of "NULL".
3559
356010. Since release 3.03, if Exim is called by a uid other than root or the Exim
3561 user that is built into the binary, and the -C or -D options is used, root
3562 privilege is dropped before the configuration file is read. In addition,
3563 logging is switched to stderr instead of the normal log files. If the
3564 configuration then re-defines the Exim user, the unprivileged environment
3565 is probably not what is expected, so Exim logs a panic warning message (but
3566 proceeds).
3567
3568 However, if deliver_drop_privilege is set, the unprivileged state may well
3569 be exactly what is intended, so the warning has been cut out in that case,
3570 and Exim is allowed to try to write to its normal log files.
3571
3572
3573Exim version 4.21
3574-----------------
3575
3576 1. smtp_return_error_details was not giving details for temporary sender
3577 or receiver verification errors.
3578
3579 2. Diagnose a configuration error if two authenticators have the same public
3580 name.
3581
3582 3. Exim used not to create the message log file for a message until the first
3583 delivery attempt. This could be confusing when incoming messages were held
3584 for policy or load reasons. The message log file is now created at the time
3585 the message is received, and an initial "Received" line is written to it.
3586
3587 4. The automatically generated man page for command line options had a minor
3588 bug that caused no ill effects; however, a more serious problem was that
3589 the procedure for building the man page automatically didn't always
3590 operate. Consequently, release 4.20 contains an out-of-date version. This
3591 shouldn't happen again.
3592
3593 5. When building Exim with embedded Perl support, the script that builds the
3594 Makefile was calling 'perl' to find its compile-time parameters, ignoring
3595 any setting of PERL_COMMAND in Local/Makefile. This is now fixed.
3596
3597 6. The freeze_tell option was not being used for messages that were frozen on
3598 arrival, either by an ACL or by local_scan().
3599
3600 7. Added the smtp_incomplete_transaction log selector.
3601
3602 8. After STARTTLS, Exim was not forgetting that it had advertised AUTH, so it
3603 was accepting AUTH without a new EHLO.
3604
3605 9. Added tls_remember_esmtp to cope with YAEB. This allows AUTH and other
3606 ESMTP extensions after STARTTLS without a new EHLO, in contravention of the
3607 RFC.
3608
360910. Logging of TCP/IP connections (when configured) now happens in the main
3610 daemon process instead of the child process, so that the TCP/IP connection
3611 count is more accurate (but it can never be perfect).
3612
361311. The use of "drop" in a nested ACL was not being handled correctly in the
3614 outer ACL. Now, if condition failure induced by the nested "drop" causes
3615 the outer ACL verb to deny access ("accept" or "discard" after "endpass",
3616 or "require"), the connection is dropped.
3617
361812. Similarly, "discard" in a nested ACL wasn't being handled. A nested ACL
3619 that yield "discard" can now be used with an "accept" or a "discard" verb,
3620 but an error is generated for any others (because I can't see a useful way
3621 to define what should happen).
3622
362313. When an ACL is read dynamically from a file (or anywhere else), the lines
3624 are now processed in the same way as lines in the Exim configuration file.
3625 In particular, continuation lines are supported.
3626
362714. Added the "dnslists = a.b.c!=n.n.n.n" feature.
3628
362915. Added -ti meaning -t -i.
3630
363116. Check for letters, digits, hyphens, and dots in the names of dnslist
3632 domains, and warn by logging if others are found.
3633
363417. At least on BSD, alignment is not guarenteed for the array of ifreq's
3635 returned from GIFCONF when Exim is trying to find the list of interfaces on
3636 a host. The code in os.c has been modified to copy each ifreq to an aligned
3637 structure in all cases.
3638
3639 Also, in some cases, the returned ifreq's were being copied to a 'struct
3640 ifreq' on the stack, which was subsequently passed to host_ntoa(). That
3641 means the last couple of bytes of an IPv6 address could be chopped if the
3642 ifreq contained only a normal sockaddr (14 bytes storage).
3643
364418. Named domain lists were not supported in the hosts_treat_as_local option.
3645 An entry such as +xxxx was not recognized, and was treated as a literal
3646 domain name.
3647
364819. Ensure that header lines added by a DATA ACL are included in the reject log
3649 if the ACL subsequently rejects the message.
3650
365120. Upgrade the cramtest.pl utility script to use Digest::MD5 instead of just
3652 MD5 (which is deprecated).
3653
365421. When testing a filter file using -bf, Exim was writing a message when it
3655 took the sender from a "From " line in the message, but it was not doing so
3656 when it took $return_path from a Return-Path: header line. It now does.
3657
365822. If the contents of a "message" modifier for a "warn" ACL verb do not begin
3659 with a valid header line field name (a series of printing characters
3660 terminated by a colon, Exim now inserts X-ACL-Warn: at the beginning.
3661
366223. Changed "disc" in the source to "disk" to conform to the documentation and
3663 the book and for uniformity.
3664
366524. Ignore Sendmail's -Ooption=value command line item.