Correct the order of the acl and add_header entries in a couple of tables.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
9b8fadde 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.338 2006/04/04 11:18:31 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
214e2000
PH
6Exim version 4.61
7-----------------
8
9PH/01 The code for finding all the local interface addresses on a FreeBSD
10 system running IPv6 was broken. This may well have applied to all BSD
11 systems, as well as to others that have similar system calls. The broken
12 code found IPv4 interfaces correctly, but gave incorrect values for the
13 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
14 that it would not match correctly against @[] and not recognize the IPv6
15 addresses as local.
16
f9daeae0
PH
17PH/02 The ipliteral router was not recognizing addresses of the form user@
18 [ipv6:....] because it didn't know about the "ipv6:" prefix.
19
7e66e54d
PH
20PH/03 Added disable_ipv6.
21
c8ea1597
PH
22PH/04 Changed $reply_address to use the raw form of the headers instead of the
23 decoded form, because it is most often used to construct To: headers
24 lines in autoreplies, and the decoded form may well be syntactically
25 invalid. However, $reply_address has leading white space removed, and all
26 newlines turned into spaces so that the autoreply transport does not
27 grumble.
28
911f6fde
PH
29PH/05 If group was specified without a user on a router, and no group or user
30 was specified on a transport, the group from the router was ignored.
31
47ca6d6c
PH
32PH/06 Increased the number of ACL variables to 20 of each type, and arranged
33 for visible compile-time settings that can be used to change these
34 numbers, for those that want even more. Backwards compatibility with old
35 spool files has been maintained. However, going back to a previous Exim
36 release will lost any variables that are in spool files.
37
ed0e9820
PH
38PH/07 Two small changes when running in the test harness: increase delay when
39 passing a TCP/IP connection to a new process, in case the original
40 process has to generate a bounce, and remove special handling of
41 127.0.0.2 (sic), which is no longer necessary.
42
eff37e47
PH
43PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
44 be the same on different OS.
45
1921d2ea
PH
46PH/09 Moved a debug statement in filter processing to avoid a race problem when
47 testing.
48
b3f69ca8
JJ
49JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
50 whether --show-vars was specified or not
51
52JJ/02 exipick: Added support for new ACL variable spool format introduced
53 in 4.61-PH/06
54
424a1c63
PH
55PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
56 syntactically invalid From: or Reply-to: line, and a filter used this to
57 generate an autoreply, and therefore failed to obtain an address for the
58 autoreply, Exim could try to deliver to a non-existent relative file
59 name, causing unrelated and misleading errors. What now happens is that
60 it logs this as a hard delivery error, but does not attempt to create a
61 bounce message.
62
7a100415
PH
63PH/11 The exinext utility has a -C option for testing purposes, but although
64 the given file was scanned by exinext itself; it wasn't being passed on
65 when Exim was called.
66
19b9dc85
PH
67PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
68 an end-of-file indication when reading a command response.
69
309bd837
PH
70PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
71 compiled. In many other places in Exim, IPv6 addresses are always
72 recognized, so I have changed this. It also means that IPv4 domain
73 literals of the form [IPV4:n.n.n.n] are now always recognized.
74
59e82a2a
PH
75PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
76 used if the router is not running as root, for example, when verifying at
77 ACL time, or when using -bh. The debugging output from this situation was
78 non-existent - all you got was a failure to exec. I have made two
79 changes:
80
81 (a) Failures to set uid/gid, the current directory, or a process leader
82 in a subprocess such as that created by queryprogram now generate
83 suitable debugging ouput when -d is set.
84
85 (b) The queryprogram router detects when it is not running as root,
86 outputs suitable debugging information if -d is set, and then runs
87 the subprocess without attempting to change uid/gid.
88
9edc04ce
PH
89PH/15 Minor change to Makefile for building test_host (undocumented testing
90 feature).
91
1349e1e5
PH
92PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
93 additional section of a DNS packet that returns MX or SRV records.
94 Instead, it always explicitly searches for A/AAAA records. This avoids
95 major problems that occur when a DNS server includes only records of one
96 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
97 fixed another bug: if SRV records were looked up and the corresponding
98 address records were *not* found in the additional section, the port
99 values from the SRV records were lost.
100
ea49d0e1
PH
101PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
102 using the correct key (the original address) when searching the retry
103 rules in order to find which one to use for generating the retry hint.
104
064a94c9
PH
105PH/18 If quota_warn_message contains a From: header, Exim now refrains from
106 adding the default one. Similarly, if it contains a Reply-To: header, the
107 errors_reply_to option, if set, is not used.
108
727071f8
PH
109PH/19 When calculating a retry time, Exim used to measure the "time since
110 failure" by looking at the "first failed" field in the retry record. Now
111 it does not use this if it is later than than the arrival time of the
112 message. Instead it uses the arrival time. This makes for better
113 behaviour in cases where some deliveries succeed, thus re-setting the
114 "first failed" field. An example is a quota failure for a huge message
115 when small messages continue to be delivered. Without this change, the
116 "time since failure" will always be short, possible causing more frequent
117 delivery attempts for the huge message than are intended.
118
f78eb7c6
PH
119PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
120 $1, $2, $3) because the numerical variables can be reset during some
121 expansion items (e.g. "match"), thereby losing the authentication data.
122
21c28500
PH
123PH/21 Make -bV show the size of off_t variables so that the test suite can
124 decide whether to run tests for quotas > 2G.
125
126PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
127 mailbox_size, and mailbox_filecount in the appendfile transport. If a
128 filecount value is greater than 2G or if a quota value is greater than 2G
129 on a system where the size of off_t is not greater than 4, a panic error
130 is given.
131
1688f43b
PH
132PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
133 never match. The debug and -bh output now contains an explicit error
134 message indicating a malformed IPv4 address or mask.
135
136PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
137 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
138 PH/23 above applies.
139
9675b384
PH
140PH/25 Do not write to syslog when running in the test harness. The only
141 occasion when this arises is a failure to open the main or panic logs
142 (for which there is an explicit test).
143
6a3f1455
PH
144PH/26 Added the /no_tell option to "control=freeze".
145
dac79d3e
PH
146PH/27 If a host name lookup failed very early in a connection, for example, if
147 the IP address matched host_lookup and the reverse lookup yielded a name
148 that did not have a forward lookup, an error message of the form "no IP
149 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
150 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 151
5977a0b3
PH
152PH/28 An enabling patch from MH: add new function child_open_exim2() which
153 allows the sender and the authenticated sender to be set when
154 submitting a message from within Exim. Since child_open_exim() is
155 documented for local_scan(), the new function should be too.
156
c91535f3
PH
157PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
158 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
159 results in an empty string is now treated as unset.
160
0d46a8c8
PH
161PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
162
278c6e6c
PH
163PH/31 Added sender_verify_fail logging option.
164
2cbb4081
PH
165PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
166 needed by RFC 822 but not by RFC 2822 was commented out. I have now
167 tidied the source and removed it altogether.
168
3eef829e
PH
169PH/33 When a queue run was abandoned because the load average was too high, a
170 log line was always written; now it is written only if the queue_run log
171 selector is set. In addition, the log line for abandonment now contains
172 information about the queue run such as the pid. This is always present
173 in "start" and "stop" lines but was omitted from the "abandon" line.
174
1ab95fa6
PH
175PH/34 Omit spaces between a header name and the colon in the error message that
176 is given when verify = headers_syntax fails (if there are lots of them,
177 the message gets confusing).
178
230205fc
PH
179PH/35 Change the default for dns_check_names_pattern to allow slashes within
180 names, as there are now some PTR records that contain slashes. This check
181 is only to protect against broken name servers that fall over on strange
182 characters, so the fact that it applies to all lookups doesn't matter.
183
75e0e026
PH
184PH/36 Now that the new test suite is complete, we can remove some of the
185 special code in Exim that was needed for the old test suite. For example,
186 sorting DNS records because real resolvers return them in an arbitrary
187 order. The new test suite's fake resolver always returns records in the
188 same order.
189
190PH/37 When running in the test harness, use -odi for submitted messages (e.g.
191 bounces) except when queue_only is set, to avoid logging races between
192 the different processes.
193
145396a6
PH
194PH/38 Panic-die if .include specifies a non-absolute path.
195
3cd34f13
PH
196PH/39 A tweak to the "H" retry rule from its user.
197
11121d3d
JJ
198JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
199 a label. They prevented compilation on older perls.
200
201JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
202 a warning to be raised on newish perls.
203
204JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
205 on queue. Changes to match documented behaviour of showing count of
206 messages matching specified criteria.
207
8def5aaf
PH
208PH/40 Changed the default ident timeout from 30s to 5s.
209
929ba01c
PH
210PH/41 Added support for the use of login_cap features, on those BSD systems
211 that have them, for controlling the resources used by pipe deliveries.
212
2632889e
PH
213PH/42 The content-scanning code uses fopen() to create files in which to put
214 message data. Previously it was not paying any attention to the mode of
215 the files. Exim runs with umask(0) because the rest of the code creates
216 files with open(), and sets the required mode explicitly. Thus, these
217 files were ending up world-writeable. This was not a big issue, because,
218 being within the spool directory, they were not world-accessible. I have
219 created a function called modefopen, which takes an additional mode
220 argument. It sets umask(777), creates the file, chmods it to the required
221 mode, then resets the umask. All the relevant calls to fopen() in the
222 content scanning code have been changed to use this function.
223
944a9c55
PH
224PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
225 to 24 hours. This avoids potential overflow problems when processing G
226 and H retry rules. I suspect nobody ever tinkers with this value.
227
4a23603b
PH
228PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
229
4730f942
PH
230PH/45 When the plaintext authenticator is running as a client, the server's
231 challenges are checked to ensure they are valid base64 strings. By
232 default, the authentication attempt is cancelled if an invalid string is
233 received. Setting client_ignore_invalid_base64 true ignores these errors.
234 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
235 they are received. Thus, the responses can be made to depend on the
236 challenges. If an invalid string is ignored, an empty string is placed in
237 the variable.
238
30dba1e6
PH
239PH/46 Messages that are created by the autoreply transport now contains a
240 References: header, in accordance with RFCs 2822 and 3834.
241
382afc6b
PH
242PH/47 Added authenticated_sender_force to the smtp transport.
243
a86229cf
PH
244PH/48 The ${prvs expansion was broken on systems where time_t was long long.
245
50c99ba6
PH
246PH/49 Installed latest patch from the Sieve maintainer.
247
d35e429d
PH
248PH/50 When an Exim quota was set without a file count quota, and mailbox_size
249 was also set, the appendfile transport was unnecessarily scanning a
250 directory of message files (e.g. for maildir delivery) to find the count
251 of files (along with the size), even though it did not need this
252 information. It now does the scan only if it needs to find either the
253 size of the count of files.
254
f90d018c
PH
255PH/51 Added ${time_eval: to convert Exim time strings into seconds.
256
75def545
PH
257PH/52 Two bugs concerned with error handling when the smtp transport is
258 used in LMTP mode:
259
260 (i) Exim was not creating retry information for temporary errors given
261 for individual recipients after the DATA command when the smtp transport
262 was used in LMTP mode. This meant that they could be retried too
263 frequently, and not timed out correctly.
264
265 (ii) Exim was setting the flag that allows error details to be returned
266 for LMTP errors on RCPT commands, but not for LMTP errors for individual
267 recipients that were returned after the DATA command.
268
269PH/53 This is related to PH/52, but is more general: for any failing address,
270 when detailed error information was permitted to be returned to the
271 sender, but the error was temporary, then after the final timeout, only
272 "retry timeout exceeded" was returned. Now it returns the full error as
273 well as "retry timeout exceeded".
274
c46782ef
PH
275PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
276 do this, and (what is worse) MTAs that accept it.
277
71fafd95
PH
278PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
279 will now be deprecated.
280
2c5db4fd
PH
281PH/56 New os.c-cygwin from the Cygwin maintainer.
282
9cf6b11a
JJ
283JJ/06 exipick: added --unsorted option to allow unsorted output in all output
284 formats (previously only available in exim formats via -bpr, -bpru,
285 and -bpra. Now also available in native and exiqgrep formats)
286
287JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
288 with very large, slow to parse queues
289
290JJ/08 exipick: added ! as generic prefix to negate any criteria format
291
292JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
293
898d150f
PH
294PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
295 responses to authentication challenges, though it was showing the
296 challenges; (ii) I've removed the CR characters from the debug output for
297 SMTP output lines.
298
46218253
PH
299PH/58 Allow for the insertion of a newline as well as a space when a string
300 is turned into more than one encoded-word during RFC 2047 encoding. The
301 Sieve code now uses this.
302
e97957bc
PH
303PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
304 data_4xx, lost_connection, tls_required.
305
81e509d7
PH
306PH/60 When a VRFY deferred or FAILED, the log message rather than the user
307 message was being sent as an SMTP response.
308
3d240ff7
PH
309PH/61 Add -l and -k options to exicyclog.
310
b37c4101
PH
311PH/62 When verifying, if an address was redirected to one new address, so that
312 verification continued, and the new address failed or deferred after
313 having set something in $address_data, the value of $address_data was not
314 passed back to the ACL. This was different to the case when no
315 redirection occurred. The value is now passed back in both cases.
316
79378e0f
PH
317PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
318 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
319 use login_cap.h, so on its own it isn't the distinguishing feature. The
320 new name refers directly to the setclassresources() function.
321
e49c7bb4
PH
322PH/65 Added configuration files for NetBSD3.
323
d114ec46
PH
324PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
325
f3d7df6c
PH
326PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
327 is preferred over IPv4.
328
715ab376
PH
329PH/68 The bounce_return_message and bounce_return_body options were not being
330 honoured for bounces generated during the reception of non-SMTP messages.
331 In particular, this applied to messages rejected by the ACL. This bug has
332 been fixed. However, if bounce_return_message is true and bounce_return_
333 body is false, the headers that are returned for a non-SMTP message
334 include only those that have been read before the error was detected.
335 (In the case of an ACL rejection, they have all been read.)
336
6b31b150
PH
337PH/69 The HTML version of the specification is now built in a directory called
338 spec_html instead of spec.html, because the latter looks like a path with
339 a MIME-type, and this confuses some software.
340
341PH/70 Catch two compiler warnings in sieve.c.
342
d515a917
PH
343PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
344 function verify_get_ident() calls ip_connect() to connect a socket, but
345 if the "connect()" function timed out, ip_connect() used to close the
346 socket. However, verify_get_ident() also closes the socket later, and in
347 between Exim writes to the log, which may get opened at this point. When
348 the socket was closed in ip_connect(), the log could get the same file
349 descriptor number as the socket. This naturally causes chaos. The fix is
350 not to close the socket in ip_connect(); the socket should be closed by
351 the function that creates it. There was only one place in the code where
352 this was missing, in the iplookup router, which I don't think anybody now
353 uses, but I've fixed it anyway.
354
9b8fadde
PH
355PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
356 well as to direct DNS lookups. Otherwise the handling of names in host
357 lists is inconsistent and therefore confusing.
358
214e2000 359
5de37277
PH
360Exim version 4.60
361-----------------
362
cc38ddbf
PH
363PH/01 Two changes to the default runtime configuration:
364
365 (1) Move the checks for relay_from_hosts and authenticated clients from
366 after to before the (commented out) DNS black list checks.
367
368 (2) Add control=submission to the relay_from_hosts and authenticated
369 clients checks, on the grounds that messages accepted by these
370 statements are most likely to be submissions.
5de37277 371
72fdd6ae
PH
372PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
373
374 (1) Generate an error if the third argument for the ${prvs expansion is
375 not a single digit.
376
377 (2) Treat a missing third argument of ${prvscheck as if it were an empty
378 string.
379
380 (3) Reset the variables that are obtained from the first argument of
381 ${prvscheck and used in the second argument before leaving the code,
382 because their memory is reclaimed, so using them afterwards may do
383 silly things.
384
385 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
386 one (it's much easier than Tom thought :-).
387
388 (5) Because of (4), we can now allow for the use of $prvscheck_result
389 inside the third argument.
cb9328de 390
cb741023
PH
391PH/03 For some reason, the default setting of PATH when running a command from
392 a pipe transport was just "/usr/bin". I have changed it to
393 "/bin:/usr/bin".
394
f174f16e
PH
395PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
396 anything to be listed in the output from -bV.
b2f5a032 397
c25242d7
PH
398PH/05 When a filter generated an autoreply, the entire To: header line was
399 quoted in the delivery log line, like this:
400
401 => >A.N.Other <ano@some.domain> <original@ddress> ...
402
403 This has been changed so that it extracts the operative address. There
404 may be more than one such address. If so, they are comma-separated, like
405 this:
406
407 => >ano@some.domain,ona@other.domain <original@ddress> ...
408
82c19f95
PH
409PH/06 When a client host used a correct literal IP address in a HELO or EHLO
410 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
411 not being looked up in the rDNS to get a host name, Exim was showing the
412 IP address twice in Received: lines, even though the IP addresses were
413 identical. For example:
414
415 Received: from [1.2.3.4] (helo=[1.2.3.4])
416
417 However, if the real host name was known, it was omitting the HELO data
418 if it matched the actual IP address. This has been tidied up so that it
419 doesn't show the same IP address twice.
420
d7ffbc12
PH
421PH/07 When both +timestamp and +memory debugging was on, the value given by
422 $tod_xxx expansions could be wrong, because the tod_stamp() function was
423 called by the debug printing, thereby overwriting the timestamp buffer.
424 Debugging no longer uses the tod_stamp() function when +timestamp is set.
425
9f526266
PH
426PH/08 When the original message was included in an autoreply transport, it
427 always said "this is a copy of the message, including all the headers",
428 even if body_only or headers_only was set. It now gives an appropriate
429 message.
430
87fcc8b9
PH
431PH/09 Applied a patch from the Sieve maintainer which:
432
433 o fixes some comments
434 o adds the (disabled) notify extension core
435 o adds some debug output for the result of if/elsif tests
436 o points to the current vacation draft in the documentation
437 and documents the missing references header update
438
439 and most important:
440
441 o fixes a bug in processing the envelope test (when testing
442 multiple envelope elements, the last element determinted the
443 result)
444
456682f5
PH
445PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
446 Electronic Mail") by including:
447
448 Auto-submitted: auto-generated
449
450 in the messages that it generates (bounce messages and others, such as
451 warnings). In the case of bounce messages for non-SMTP mesages, there was
452 also a typo: it was using "Auto_submitted" (underscore instead of
453 hyphen). Since every message generated by Exim is necessarily in response
454 to another message, thes have all been changed to:
455
456 Auto-Submitted: auto-replied
457
458 in accordance with these statements in the RFC:
459
460 The auto-replied keyword:
461
462 - SHOULD be used on messages sent in direct response to another
463 message by an automatic process,
464
465 - MUST NOT be used on manually-generated messages,
466
467 - MAY be used on Delivery Status Notifications (DSNs) and Message
468 Disposition Notifications (MDNs),
469
470 - MUST NOT be used on messages generated by automatic or periodic
471 processes, except for messages which are automatic responses to
472 other messages.
473
3e46c1aa
PH
474PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
475 to the default Received: header definition.
456682f5 476
49826d12
PH
477PH/12 Added log selector acl_warn_skipped (default on).
478
eba0c039
PH
479PH/13 After a successful wildlsearch lookup, discard the values of numeric
480 variables because (a) they are in the wrong storage pool and (b) even if
481 they were copied, it wouldn't work properly because of the caching.
482
a0d6ba8a
PH
483PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
484 checking when decoding. Apparently there are clients that generate
485 overlong encoded strings. Why am I not surprised?
486
f0917727
PH
487PH/15 If the first argument of "${if match_address" was not empty, but did not
488 contain an "@" character, Exim crashed. Now it writes a panic log message
489 and treats the condition as false.
490
096fee00
PH
491PH/16 In autoreply, treat an empty string for "once" the same as unset.
492
024bd3c2
PH
493PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
494 extension "envelope-auth". The code is finished and in agreement with
495 other implementations, but there is no documentation so far and in fact,
496 nobody wrote the draft yet. This extension is currently #undef'ed, thus
497 not changing the active code.
498
499 Print executed "if" and "elsif" statements when debugging is used. This
500 helps a great deal to understand what a filter does.
501
502 Document more things not specified clearly in RFC3028. I had all this
503 sorted out, when out of a sudden new issues came to my mind. Oops."
504
df199fec
PH
505PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
506 (Bugzilla #53).
507
d27f1df3
PH
508PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
509 canonical form (as documented). However, after a host name lookup from
510 the IP address, check_host() was doing a simple string comparison with
511 addresses acquired from the DNS when checking that the found name did
512 have the original IP as one of its addresses. Since any found IPv6
513 addresses are likely to be in abbreviated form, the comparison could
514 fail. Luckily, there already exists a function for doing the comparison
515 by converting both addresses to binary, so now that is used instead of
516 the text comparison.
517
96776534
PH
518PH/20 There was another similar case to PH/19, when a complete host name was
519 given in a host list; looking up its IP address could give an abbreviated
520 form, whereas the current host's name might or might not be abbreviated.
521 The same fix has been applied.
522
5de37277 523
9a799bc0
PH
524Exim version 4.54
525-----------------
526
527PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
528 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
529 It now does.
530
99a4b039
PH
531PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
532 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
533
534PH/03 Typo: missing ".o" in src/pcre/Makefile.
535
4b233853
PH
536PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
537 header line, restrict the check to what is listed in RFCs 2369 and 2929.
538 Also, for "Auto-Submitted", treat anything other than "no" as
539 non-personal, in accordance with RFC 3834. (Previously it treated
540 anything starting "auto-" as non-personal.)
541
8857ccfd
PH
542TF/01 The control=submission/name=... option had a problem with syntax
543 errors if the name included a slash character. The /name= option
544 now slurps the rest of the string, so it can include any characters
545 but it must come last in the list of options (after /sender_retain
546 or /domain=).
547
433a2980
PH
548PH/05 Some modifications to the interface to the fake nameserver for the new
549 testing suite.
550
3e46c1aa 551
9a799bc0 552
e3a311ba
TK
553Exim version 4.53
554-----------------
555
556TK/01 Added the "success_on_redirect" address verification option. See
557 NewStuff for rationale and an example.
558
13b685f9
PH
559PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
560
395ff96d
PH
561PH/02 Patch to exigrep to allow it to work on syslog lines.
562
5b68f6e4
PH
563PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
564 fread() to skip over the body file's header line, because in Cygwin the
565 header line is locked and is inaccessible.
566
1ab52c69
PH
567PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
568 co-exist for some time) to make it clear that it is the Exim ID that is
569 referenced, not the Message-ID: header line.
570
b07e6aa3
PH
571PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
572 string_format() function, because snprintf() does not exist on all
573 operating systems.
574
254e032f
PH
575PH/06 The use of forbid_filter_existstest now also locks out the use of the
576 ${stat: expansion item.
577
3af76a81
PH
578PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
579 protocol synchronization error", to keep the pedants happy.
580
2548ba04
PH
581PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
582 well as for IRIX systems, when gcc is being used. See the host.c source
583 file for comments.
584
b6c6011d
PH
585PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
586
cf39cf57
PH
587PH/10 Named domain lists were not working if used in a queue_smtp_domains
588 setting.
589
f1513293
PH
590PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
591 transport and to the smtp transport in LMTP mode.
592
727549a4
PH
593TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
594
af46795e
PH
595PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
596 run a filter in a subprocess. This could lead to confusion in subsequent
597 lookups in the parent process. There should also be a search_tidyup() at
598 the end of the subprocess.
599
d7b47fd0
PH
600PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
601 only if the host matched helo_try_verify_hosts, which caused the
602 verification to occur when the EHLO/HELO command was issued. The ACL just
603 tested the remembered result. Now, if a previous verification attempt has
604 not happened, "verify = helo" does it there and then.
605
ee744174
JJ
606JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
607
b582ab87
PH
608TK/03 Fix log output including CR from clamd.
609
41a13e0a
PH
610PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
611 exist provoked a memory error which could cause a segfault.
612
f625cc5a
PH
613PH/15 Installed PCRE 6.2
614
615PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
616
21f7af35
PH
617PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
618 of the problem. Specifically, suggested +O2 rather than +O1 for the
619 HP-UX compiler.
620
31480e42
PH
621PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
622
2d280592
PH
623PH/20 If a delivery was routed to a non-standard port by means of an SRV
624 record, the port was not correctly logged when the outgoing_port log
625 selector was set (it logged the transort's default port).
626
7cd1141b
PH
627PH/21 Added support for host-specific ports to manualroute, queryprogram,
628 fallback_hosts, and "hosts" in the smtp transport.
629
630PH/22 If the log selector "outgoing_port" is set, the port is now also given on
631 host errors such as "Connection refused".
632
750af86e
PH
633PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
634 authentication with radiusclient 0.4.9:
635
636 - Error returned from rc_read_config was caught wrongly
637 - Username/password not passed on to radius server due to wrong length.
638
639 The presumption is that some radiusclient API changes for 4.51/PH/17
640 were not taken care of correctly. The code is still untested by me (my
641 Linux distribution still has 0.3.2 of radiusclient), but it was
642 contributed by a Radius user.
643
644PH/24 When doing a callout, the value of $domain wasn't set correctly when
645 expanding the "port" option of the smtp transport.
646
4304270b
TK
647TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
648 while reading a MIME header. Thanks to Tom Hughes for a patch.
649
750af86e
PH
650PH/24 Include config.h inside local_scan.h so that configuration settings are
651 available.
652
64ffc24f
PH
653PH/25 Make $smtp_command_argument available after all SMTP commands. This means
654 that in an ACL for RCPT (for example), you can examine exactly what was
655 received.
656
5dd9625b
PH
657PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
658 commands, but it was not correctly comparing the address with the actual
659 client host address. Thus, it would show the EHLO address in Received:
660 header lines when this was not necessary.
661
5591031b
PH
662PH/27 Added the % operator to ${eval:}.
663
ba18e66a
PH
664PH/28 Exim tries to create and chdir to its spool directory when it starts;
665 it should be ignoring failures (because with -C, for example, it has lost
666 privilege). It wasn't ignoring creation failures other than "already
667 exists".
668
9cec981f
PH
669PH/29 Added "crypteq" to the list of supported features that Exim outputs when
670 -bV or -d is used.
671
aa2b5c79
PH
672PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
673 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
674 too many continuations, the temporary file was not being removed, and the
675 return code was incorrect.
aa2b5c79 676
48a53b7f
PH
677PH/31 Missing "BOOL" in function definition in filtertest.c.
678
1c59d63b
PH
679PH/32 Applied Sieve patches from the maintainer.
680
671012da
TK
681TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
682
1509d3a8
PH
683PH/33 Added "verify = not_blind".
684
685PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
686 Local/Makefile (with some defaults set). These are used in built scripts
687 such as exicyclog, but they have never been used in the exim_install
688 script (though there are many overriding facilities there). I have
689 arranged that the exim_install script now takes note of these two
690 settings.
691
692PH/35 Installed configuration files for Dragonfly.
693
2fe1a124
PH
694PH/36 When a locally submitted message by a trusted user did not contain a
695 From: header, and the sender address was obtained from -f or from an SMTP
696 MAIL command, and the trusted user did not use -F to supply a sender
697 name, $originator_name was incorrectly used when constructing a From:
698 header. Furthermore, $originator_name was used for submission mode
699 messages from external hosts without From: headers in a similar way,
700 which is clearly wrong.
701
8800895a
PH
702PH/37 Added control=suppress_local_fixups.
703
ccfdb010
PH
704PH/38 When log_selector = +received_sender was set, and the addition of the
705 sender made the log line's construction buffer exactly full, or one byte
706 less than full, an overflow happened when the terminating "\n" was
707 subsequently added.
708
1130bfb0
PH
709PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
710 when the result of a list match is failure because a DNS lookup failed.
711
ebcb507f
PH
712PH/40 RM_COMMAND is now used in the building process.
713
c35e155c
PH
714PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
715 the "build-* directories that it finds.
716
95d1f782
PH
717PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
718 address in a domain literal was a prefix of an interface address.
719
fd6de02e
PH
720PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
721 when verifying a sender address, unless rewrite_headers is false.
722
58de37c5
PH
723PH/44 Wrote a long comment about why errors_to addresses are verified as
724 recipients, not senders.
725
261cf466
TF
726TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
727 the ratelimit ACL was added.
728
3ee512ff
PH
729PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
730
e08c430f
PH
731PH/46 Added extra information about PostgreSQL errors to the error string.
732
bef5a11f
PH
733PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
734 avoiding the need to install special zones in a real server. This is
735 backwards compatible; if it can't find the fake resolver, it drops back.
736 Thus, both old and new test suites can be run.
737
7546de58
TF
738TF/02 Added util/ratelimit.pl
739
e5d5a95f
TF
740TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
741 clock is set back in time.
742
2e88a017
TF
743TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
744 Candler <B.Candler@pobox.com>.
745
a5f65aa4
TF
746TF/05 The fix for PH/43 was not completely correct; widen_domains is always
747 OK for addresses that are the result of redirections.
748
e7726cbf
PH
749PH/48 A number of further additions for the benefit of the new test suite,
750 including a fake gethostbyname() that interfaces to the fake DNS resolver
751 (see PH/47 above).
752
a7fdad5b
TF
753TF/06 The fix for widen_domains has also been applied to qualify_single and
754 search_parents which are the other dnslookup options that can cause
755 header rewrites.
756
6af56900
PH
757PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
758 type ("H").
759
0925ede6
PH
760PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
761
66afa403
TF
762TF/07 Exim produced the error message "an SRV record indicated no SMTP
763 service" if it encountered an MX record with an empty target hostname.
764 The message is now "an MX or SRV record indicated no SMTP service".
765
0154e85a
TF
766TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
767 if the DNS of the sending site is misconfigured. This is quite a
768 common situation. This change restores the behaviour of treating a
769 helo verification defer as a failure.
770
16f12c76
PH
771PH/51 If self=fail was set on a router, the bounce message did not include the
772 actual error message.
773
bbe902f0 774
e5a9dba6
PH
775Exim version 4.52
776-----------------
777
778TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
779
22c3b60b
PH
780PH/01 When a transport filter timed out in a pipe delivery, and the pipe
781 command itself ended in error, the underlying message about the transport
782 filter timeout was being overwritten with the pipe command error. Now the
783 underlying error message should be appended to the second error message.
784
06a9b4b5
PH
785TK/01 Fix poll() being unavailable on Mac OSX 10.2.
786
c1ac6996
PH
787PH/02 Reduce the amount of output that "make" produces by default. Full output
788 can still be requested.
789
9c7a242c
PH
790PH/03 The warning log line about a condition test deferring for a "warn" verb
791 was being output only once per connection, rather than after each
792 occurrence (because it was using the same function as for successful
793 "warn" verbs). This seems wrong, so I have changed it.
794
87ba3f5f
PH
795TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
796 it should not have, which might have caused a crash in the right
797 circumstances, but probably never did.
798
799PH/04 Installed a modified version of Tony Finch's patch to make submission
800 mode fix the return path as well as the Sender: header line, and to
801 add a /name= option so that you can make the user's friendly name appear
802 in the header line.
803
29aba418
TF
804TF/03 Added the control = fakedefer ACL modifier.
805
fe0dab11
TF
806TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
807 Mark Lowes for thorough testing.
870f6ba8 808
11d337a4
TK
809TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
810
811TK/03 Merged latest SRS patch from Miles Wilton.
812
415c8f3b
PH
813PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
814 with the definition in sysexits.h (which is #included earlier).
815 Fortunately, Exim does not actually use EX_OK. The code used to try to
816 preserve the sysexits.h value, by assumimg that macro definitions were
817 scanned for macro replacements. I have been disabused of this notion,
818 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 819
958541e9
PH
820PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
821 in the smtp transport. When a block could not be written in a single
822 write() function, the timeout was being re-applied to each part-write.
823 This seems wrong - if the receiver was accepting one byte at a time it
824 would take for ever. The timeout is now adjusted when this happens. It
825 doesn't have to be particularly precise.
826
c206415f
TK
827TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
828 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
829
2a4be8f9
PH
830PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
831 without a domain if the check to <postmaster@domain> fails.
832
1cba11c5
SC
833SC/01 Eximstats: added -xls and the ability to specify output files
834 (patch written by Frank Heydlauf).
835
836SC/02 Eximstats: use FileHandles for outputing results.
837
838SC/03 Eximstats: allow any combination of xls, txt, and html output.
839
840SC/04 Eximstats: fixed display of large numbers with -nvr option
841
842SC/05 Eximstats: fixed merging of reports with empty tables.
843
844SC/06 Eximstats: added the -include_original_destination flag
845
846SC/07 Eximstats: removed tabs and trailing whitespace.
847
1005d00e
TK
848TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
849
850TK/06 MBOX spool code: Add real "From " MBOX separator line
851 so the .eml file is really in mbox format (even though
852 most programs do not really care). Patch from Alex Miller.
853
854TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
855 The latter is generated from $received_to and is only set if the
856 message has one envelope recipient. SA can use these headers,
857 obviously out-of-the-box. Patch from Alex Miller.
858
9b4768fa
PH
859PH/08 The ${def test on a variable was returning false if the variable's
860 value was "0", contrary to what the specification has always said!
861 The result should be true unless the variable is empty.
862
863PH/09 The syntax error of a character other than { following "${if
864 def:variable_name" (after optional whitespace) was not being diagnosed.
865 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
866 accidental colon was present, for example, could give incorrect results.
867
0d7eb84a
PH
868PH/10 Tidied the code in a number of places where the st_size field of a stat()
869 result is used (not including appendfile, where other changes are about
870 to be made).
871
872PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
873 This involved changing a lot of size variables from int to off_t. It
874 should work with maildirs and everything.
875
40727bee
TK
876TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
877 spamd dying while we are connected to it.
878
554d2369
TF
879TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
880 <jgh@wizmail.org>
881
1f922db1
PH
882PH/12 Applied Alex Kiernan's patch for the API change for the error callback
883 function for BDB 4.3.
884
ef213c3b
PH
885PH/13 Changed auto_thaw such that it does not apply to bounce messages.
886
8ac170f3
PH
887PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
888 the sources for PCRE have been re-arranged and more files are now
889 involved.
890
b1c749bb
PH
891PH/15 The code I had for printing potentially long long variables in PH/11
892 above was not the best (it lost precision). The length of off_t variables
893 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
894 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
895 to be "long long int" or "long int". This is needed for the internal
896 formatting function string_vformat().
b1c749bb 897
4aac9b49
PH
898PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
899 the configuration file to be ":syslog", then the script "guesses" where
900 the logs files are, rather than using the compiled in default. In our
901 case the guess is not the same as the compiled default, so the script
902 suddenly stopped working when I started to use syslog. The patch checks
903 to see if log_file_path is "". If so, it attempts to read it from exim
904 with no configuration file to get the compiled in version, before it
905 falls back to the previous guessing code."
906
294520c8
TK
907TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
908 implementing BATV in an Exim configuration. See NewStuff for the gory
909 details.
910
5bd022fe
PH
911PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
912 Makefile that are specific to HP-UX.
913
90e9ce59
PH
914PH/18 If the "use_postmaster" option was set for a recipient callout together
915 with the "random" option, the postmaster address was used as the MAIL
916 FROM address for the random test, but not for the subsequent recipient
917 test. It is now used for both.
918
5ea81592
PH
919PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
920 patch removes a few documentation additions to RFC 3028, because the
921 latest draft now contains them. It adds the new en;ascii-case comparator
922 and a new error check for 8bit text in MIME parts. Comparator and
923 require names are now matched exactly. I enabled the subaddress
924 extension, but it is not well tested yet (read: it works for me)."
925
c6c2dc1d
PH
926PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
927 rework some of the code of TK/09 above to avoid the hardwired use of
928 "%lld" and "long long". Replaced the call to snprintf() with a call to
929 string_vformat().
930
fffffe4c
PH
931PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
932 records point to non-existent hosts", "retry timeout exceeded", and
933 "retry time not reached for any host after a long failure period".
ca02eafb 934
9a26b6b2
PH
935PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
936 experimental DomainKeys support:
937
938 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
939 (2) On an error such as an illegally used "control", the wrong name for
940 the control was given.
941
942 These problems did NOT occur unless DomainKeys support was compiled.
943
4aee0225
PH
944PH/23 Added daemon_startup_retries and daemon_startup_sleep.
945
32d668a5
PH
946PH/24 Added ${if match_ip condition.
947
8187c3f3
PH
948PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
949 databases so that it will be absolutely obvious if a crash occurs in the
950 DB library. This is a regular occurrence (often caused by mis-matched
951 db.h files).
952
ff790e47 953PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
954 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
955 picked up on a user's system that detects such things. There doesn't seem
956 to be a gcc warning option for this - only an attribute that has to be
957 put on the function's prototype. It seems that in Fedora Core 4 they have
958 set this on a number of new functions. No doubt there will be more in due
959 course.
ff790e47 960
5417f6d1
PH
961PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
962 specify a transport. However, if an address that was verified by such a
963 router was the subject of a callout, Exim crashed because it tried to
964 read the rcpt_include_affixes from the non-existent transport. Now it
965 just assumes that the setting of that option is false. This bug was
966 introduced by 4.51/PH/31.
967
59cf8544
PH
968PH/28 Changed -d+all to exclude +memory, because that information is very
969 rarely of interest, but it makes the output a lot bigger. People tend to
970 do -d+all out of habit.
971
e7ad8a65
PH
972PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
973 code in os-type was giving problems when libc.so lives in lib64, like on
974 x86_64 Fedora Core.
975
ade42478
PH
976PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
977 aren't the modern standard, and it seems that some systems' include files
978 don't always have them. Exim was already checking for some of the newer
979 ones like T_AAAA, and defining it itself. I've added checks for all the
980 record types that Exim uses.
981
182ad5cf
PH
982PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
983 not automatically generating a new one, as it is supposed to. This
984 prevented TLS from working. If the file did exist, but contained invalid
985 data, a new version was generated, as expected. It was only the case of a
986 non-existent file that was broken.
987
b0d9fc80
TK
988TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
989 with a change in libdomainkeys > 0.64.
990
991TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
992 from DNS. If the selector record carries the flag, it now has
993 precedence over the domain-wide flag.
994
995TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
996
47c7a64a
PH
997PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
998 the use of a port name that isn't defined in /etc/services) occurred, the
999 message was deferred as in a normal delivery, and thus remained on the
1000 spool, instead of being failed because of the mua_wrapper setting. This
1001 is now fixed, and I tidied up some of the mua_wrapper messages at the
1002 same time.
1003
a388bce4
SC
1004SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1005 the messages in a hash of arrays rather than using individual hashes.
1006 This is a bit cleaner and results in dramatic memory savings, albeit
1007 at a slight CPU cost.
1008
1009SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1010 as requested by Marc Sherman.
1011
1012SC/10 Eximstats: added histograms for user specified patterns as requested
1013 by Marc Sherman.
1014
0793e4ed
SC
1015SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1016
c58b88df
PH
1017PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1018 fopen() in the content-scanning modules that did not already have it.
1019
e7ad8a65 1020
7982096b
PH
1021Exim version 4.51
1022-----------------
1023
1a46a8c5
PH
1024TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1025 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1026
2f079f46 1027TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1028
1029TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1030
1031PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1032 to test Sieve filters that use "vacation".
1033
1034PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1035 that changes the way the GnuTLS parameters are stored in the cache file.
1036 The new format can be generated externally. For backward compatibility,
1037 if the data in the cache doesn't make sense, Exim assumes it has read an
1038 old-format file, and it generates new data and writes a new file. This
1039 means that you can't go back to an older release without removing the
1040 file.
1041
1042PH/03 A redirect router that has both "unseen" and "one_time" set does not
1043 work if there are any delivery delays because "one_time" forces the
1044 parent to be marked "delivered", so its unseen clone is never tried
1045 again. For this reason, Exim now forbids the simultaneous setting of
1046 these two options.
1047
1048PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1049 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1050 entry if you want to know the details. The fix, however, neglected to
1051 consider the case when local delivery batching is involved. The test for
1052 "previously delivered" was not happening when checking to see if an
1053 address could be batched with a previous (undelivered) one; under
1054 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1055 address.
1a46a8c5
PH
1056
1057PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1058 in its include files, and this causes problems building Exim.
1059
1060PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1061 header_syntax) but Exim was just ignoring anything given after a slash.
1062 In particular, this caused confusion with an attempt to use "verify =
1063 reverse_host_lookup/defer_ok". An error is now given when options are
1064 supplied for verify items that do not have them. (Maybe reverse_host_
1065 lookup should have a defer_ok option, but that's a different point.)
1066
1067PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1068 defined by RFC 821) to 2048, because there were problems with some AUTH
1069 commands, and RFC 1869 says the size should be increased for extended
1070 SMTP commands that take arguments.
1071
1072PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1073 Finch).
1074
1075PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1076 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1077
49c2d5ea
PH
1078PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1079 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1080 whatever). Otherwise the password may appear in the log. Following change
1081 PH/42 below, there is no longer a chance of it appearing in a bounce
1082 message.
49c2d5ea 1083
bf759a8b
PH
1084PH/11 Installed exipick version 20050225.0 from John Jetmore.
1085
83364d30
PH
1086PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1087 of its addresses was ever tried. (Bugzilla bug #2.)
1088
7999bbd7
PH
1089PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1090 the result incorrectly in the debug output. (It correctly added a newline
1091 to what was transported.)
1092
7dbf77c9
PH
1093TF/01 Added $received_time.
1094
74e0617f
PH
1095PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1096 commented out examples of how to interface to a virus scanner and to
1097 SpamAssassin. Also added commented examples of av_scanner and
1098 spamd_address settings.
1099
2f079f46
PH
1100PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1101 and controls are allowed in which ACLs. There were a couple of minor
1102 errors. Some of the entries in the conditions table (which is a table of
1103 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1104 negation of where the condition IS allowed.
1105
8c841523
PH
1106PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1107
7766a4f0
PH
1108PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1109 header file does not have a version number, so I've had to invent a new
1110 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1111 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1112 radiusclient), but it was contributed by a Radius user.
1113
8b417f2c
PH
1114PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1115 files or directories, for OpenSSL.
1116
901f42cb
PH
1117PH/19 When an Exim process that is running as root has to create an Exim log
1118 file, it does so in a subprocess that runs as exim:exim so as to get the
1119 ownership right at creation (otherwise, other Exim processes might see
1120 the file with the wrong ownership). There was no test for failure of this
1121 fork() call, which would lead to the process getting stuck as it waited
1122 for a non-existent subprocess. Forks do occasionally fail when resources
1123 run out. I reviewed all the other calls to fork(); they all seem to check
1124 for failure.
1125
f9b9210e
PH
1126PH/20 When checking for unexpected SMTP input at connect time (before writing
1127 the banner), Exim was not dealing correctly with a non-positive return
1128 from the read() function. If the client had disconnected by this time,
1129 the result was a log entry for a synchronization error with an empty
1130 string after "input=" when read() returned zero. If read() returned -1
1131 (an event I could not check), uninitialized data bytes were printed.
1132 There were reports of junk text (parts of files, etc) appearing after
1133 "input=".
1134
54cdb463
PH
1135PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1136
cf00dad6
PH
1137PH/22 Added support for macro redefinition, and (re)definition in between
1138 driver and ACL definitions.
1139
acb1b346
PH
1140PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1141 forgetting to use the resulting value; it was using the unexpanded value.
1142
c5ddb310
PH
1143PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1144 hadn't been configured. The fix is from Juergen Kreileder, who
1145 understands it better than I do:
1146
1147 "Here's what I see happening with three configured cyrus_sasl
1148 authenticators configured (plain, login, cram-md5):
1149
1150 On startup auth_cyrus_sasl_init() gets called for each of these.
1151 This means three calls to sasl_listmech() without a specified mech_list.
1152 => SASL tests which mechs of all available mechs actually work
1153 => three warnings about OTP not working
1154 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1155
1156 With the patch, sasl_listmech() also gets called three times. But now
1157 SASL's mech_list option is set to the server_mech specified in the the
1158 authenticator. Or in other words, the answer from sasl_listmech()
1159 gets limited to just the mech you're testing for (which is different
1160 for each call.)
1161 => the return list contains just 'plain' or 'login', 'cram-md5' or
1162 nothing depending on the value of ob->server_mech.
1163
1164 I've just tested the patch: Authentication still works fine,
1165 unavailable mechs specified in the exim configuration are still
1166 caught, and the auth.log warnings about OTP are gone."
1167
31619da6
PH
1168PH/25 When debugging is enabled, the contents of the command line are added
1169 to the debugging output, even when log_selector=+arguments is not
1170 specified.
1171
bebaf0fc
PH
1172PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1173 answer is "GNU", and only if the return is "GNU/something" is the answer
1174 "Linux".
1175
475fe28a
PH
1176PH/27 $acl_verify_message is now set immediately after the failure of a
1177 verification in an ACL, and so is available in subsequent modifiers. In
1178 particular, the message can be preserved by coding like this:
1179
1180 warn !verify = sender
1181 set acl_m0 = $acl_verify_message
1182
1183 Previously, $acl_verify_message was set only while expanding "message"
1184 and "log_message" when a very denied access.
1185
7e8bec7a
PH
1186PH/28 Modified OS/os.c-Linux with
1187
1188 -#ifndef OS_LOAD_AVERAGE
1189 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1190
1191 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1192 nomenclature these days.)
1193
e4a89c47
PH
1194PH/29 Installed patch from the Sieve maintainer that adds the options
1195 sieve_useraddress and sieve_subaddress to the redirect router.
1196
5ca2a9a1
PH
1197PH/30 In these circumstances:
1198 . Two addresses routed to the same list of hosts;
1199 . First host does not offer TLS;
1200 . First host accepts first address;
1201 . First host gives temporary error to second address;
1202 . Second host offers TLS and a TLS session is established;
1203 . Second host accepts second address.
1204 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1205 and peerdn, if requested) that were in fact used only for the second
1206 address.
7e8bec7a 1207
c688b954
PH
1208PH/31 When doing a callout as part of verifying an address, Exim was not paying
1209 attention to any local part prefix or suffix that was matched by the
1210 router that accepted the address. It now behaves in the same way as it
1211 does for delivery: the affixes are removed from the local part unless
1212 rcpt_include_affixes is set on the transport.
1213
fed77020
PH
1214PH/32 Add the sender address, as F=<...>, to the log line when logging a
1215 timeout during the DATA phase of an incoming message.
1216
7fe1560f
PH
1217PH/33 Sieve envelope tests were broken for match types other than :is. I have
1218 applied a patch sanctioned by the Sieve maintainer.
c688b954 1219
ebb6e6d5
PH
1220PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1221 the uid or gid is negative. A case of a negative gid caused this to be
1222 noticed. The fix allows for either to be negative.
1223
9c4e8f60
PH
1224PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1225 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1226 overlooked.
1227
1228PH/36 The change PH/12 above was broken. Fixed it.
1229
d7174846
PH
1230PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1231 the grounds that routing the same address twice would always produce the
1232 same answer. This might have been true once, but it is certainly no
1233 longer true now. Routing a child address may depend on the previous
1234 routing that produced that child. Some complicated redirection strategies
1235 went wrong when messages had multiple recipients, and made Exim's
1236 behaviour dependent on the order in which the addresses were given.
1237
1238 I have moved the duplicate checking until after the routing is complete.
1239 Exim scans the addresses that are assigned to local and remote
1240 transports, and removes any duplicates. This means that more work will be
1241 done, as duplicates will always all be routed, but duplicates are
1242 presumably rare, so I don't expect this is of any significance.
1243
1244 For deliveries to pipes, files, and autoreplies, the duplicate checking
1245 still happens during the routing process, since they are not going to be
1246 routed further.
1247
cfe75fc3
PH
1248PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1249 It corrects a timeout issue with spamd. This is Ian's comment: "The
1250 background is that sometimes spamd either never reads data from a
1251 connection it has accepted, or it never writes response data. The exiscan
1252 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1253 blindly assumes that writes won't block so it may never time out."
1254
be22d70e
PH
1255PH/39 Allow G after quota size as well as K and M.
1256
0612b098
PH
1257PH/40 The value set for $authenticated_id in an authenticator may not contain
1258 binary zeroes or newlines because the value is written to log lines and
1259 to spool files. There was no check on this. Now the value is run through
1260 the string_printing() function so that such characters are converted to
1261 printable escape sequences.
1262
2e0c1448
PH
1263PH/41 $message_linecount is a new variable that contains the total number of
1264 lines in the message. Compare $body_linecount, which is the count for the
1265 body only.
1266
447d236c
PH
1267PH/42 Exim no longer gives details of delivery errors for specific addresses in
1268 bounce and delay warning messages, except in certain special cases, which
1269 are as follows:
1270
1271 (a) An SMTP error message from a remote host;
1272 (b) A message specified in a :fail: redirection;
1273 (c) A message specified in a "fail" command in a system filter;
1274 (d) A message specified in a FAIL return from the queryprogram router;
1275 (e) A message specified by the cannot_route_message router option.
1276
1277 In these cases only, Exim does include the error details in bounce and
1278 warning messages. There are also a few cases where bland messages such
1279 as "unrouteable address" or "local delivery error" are given.
1280
d20976dc
PH
1281PH/43 $value is now also set for the "else" part of a ${run expansion.
1282
f656d135
PH
1283PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1284 being worked on, but at least Exim now implements the latest version to
1285 play with."
1286
2e2a30b4
PH
1287PH/45 In a pipe transport, although a timeout while waiting for the pipe
1288 process to complete was treated as a delivery failure, a timeout while
1289 writing the message to the pipe was logged, but erroneously treated as a
1290 successful delivery. Such timeouts include transport filter timeouts. For
1291 consistency with the overall process timeout, these timeouts are now
1292 treated as errors, giving rise to delivery failures by default. However,
1293 there is now a new Boolean option for the pipe transport called
1294 timeout_defer, which, if set TRUE, converts the failures into defers for
1295 both kinds of timeout. A transport filter timeout is now identified in
1296 the log output.
1297
9176e9f0
PH
1298PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1299 systems where "make" and "gmake" are different, calling "gmake" at top
1300 level broke things. I've arranged for the value of $(MAKE) to be passed
1301 from the Makefile to this script so that it can call the same version of
1302 "make".
1303
7982096b 1304
bbe902f0
PH
1305A note about Exim versions 4.44 and 4.50
1306----------------------------------------
1307
1308Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1309changes of various kinds. As a consequence, a big documentation update was
1310needed. This delayed the release for rather longer than seemed good, especially
1311in the light of a couple of (minor) security issues. Therefore, the changes
1312that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1313release. So 4.44 and 4.50 are in effect two different branches that both start
1314from 4.43.
1315
1316I have left the 4.50 change log unchanged; it contains all the changes since
13174.43. The change log for 4.44 is below; many of its items are identical to
1318those for 4.50. This seems to be the most sensible way to preserve the
1319historical information.
1320
1321
f7b63901 1322Exim version 4.50
495ae4b0
PH
1323-----------------
1324
5fe762f6
PH
1325 1. Minor wording change to the doc/README.SIEVE file.
1326
139059f6 1327 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1328 computation of the current number of files was incorrect.
495ae4b0 1329
7086e875
PH
1330 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1331 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1332 place.
1333
35af9f61
PH
1334 4. Give more explanation in the error message when the command for a transport
1335 filter fails to execute.
1336
b668c215
PH
1337 5. There are several places where Exim runs a non-Exim command in a
1338 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1339 was being done only for the command run by the queryprogram router. It is
1340 now done for all such subprocesses. The other cases are: ${run, transport
1341 filters, and the commands run by the lmtp and pipe transports.
1342
a494b1e1
PH
1343 6. Added CONFIGURE_GROUP build-time option.
1344
1345 7. Some older OS have a limit of 256 on the maximum number of file
1346 descriptors. Exim was using setrlimit() to set 1000 as a large value
1347 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1348 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1349
c5fcb476
PH
1350 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1351 was an oversight, and furthermore, ever since the addition of extra
1352 controls (e.g. 4.43/32), the checks on when to allow different forms of
1353 "control" were broken. There should now be diagnostics for all cases when a
1354 control that does not make sense is encountered.
1355
69358f02
PH
1356 9. Added the /retain_sender option to "control=submission".
1357
5be20824
PH
135810. $recipients is now available in the predata ACL (oversight).
1359
eb2c0248
PH
136011. Tidy the search cache before the fork to do a delivery from a message
1361 received from the command line. Otherwise the child will trigger a lookup
1362 failure and thereby defer the delivery if it tries to use (for example) a
1363 cached ldap connection that the parent has called unbind on.
1364
2a3eea10
PH
136512. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1366 of $address_data from the recipient verification was clobbered by the
1367 sender verification.
1368
136913. The value of address_data from a sender verification is now available in
1370 $sender_address_data in subsequent conditions in the ACL statement.
1371
23c7ff99
PH
137214. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1373
4deaf07d
PH
137415. Added a new option "connect=<time>" to callout options, to set a different
1375 connection timeout.
1376
926e1192
PH
137716. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1378 was its contents. (It was OK if the option was not defined at all.)
1379
650edc6f
PH
138017. A "Completed" log line is now written for messages that are removed from
1381 the spool by the -Mrm option.
1382
2c7db3f5
PH
138318. New variables $sender_verify_failure and $recipient_verify_failure contain
1384 information about exactly what failed.
1385
3d235903
PH
138619. Added -dd to debug only the daemon process.
1387
7c7ad977
PH
138820. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1389 handles timeouts, both on the server side and network timeouts. Renamed the
1390 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1391
981756db
PH
139221. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1393 It is now set to "smtps".
1394
d4eb88df
PH
139522. $host_address is now set to the target address during the checking of
1396 ignore_target_hosts.
1397
139823. When checking ignore_target_hosts for an ipliteral router, no host name was
1399 being passed; this would have caused $sender_host_name to have been used if
1400 matching the list had actually called for a host name (not very likely,
1401 since this list is usually IP addresses). A host name is now passed as
1402 "[x.x.x.x]".
1403
7d468ab8
PH
140424. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1405 code that specifies a non-restarting handler (typically sigaction() in
1406 modern systems) in an attempt to fix a rare and obscure crash bug.
1407
140825. Narrowed the window for a race in the daemon that could cause it to ignore
1409 SIGCHLD signals. This is not a major problem, because they are used only to
1410 wake it up if nothing else does.
1411
62c0818f
PH
141226. A malformed maildirsize file could cause Exim to calculate negative values
1413 for the mailbox size or file count. Odd effects could occur as a result.
1414 The maildirsize information is now recalculated if the size or filecount
1415 end up negative.
1416
26034054
PH
141727. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1418 support for a long time. Removed HAVE_SYS_VFS_H.
1419
af66f652
PH
142028. Installed the latest version of exipick from John Jetmore.
1421
90af77f4
PH
142229. In an address list, if the pattern was not a regular expression, an empty
1423 subject address (from a bounce message) matched only if the pattern was an
1424 empty string. Non-empty patterns were not even tested. This was the wrong
1425 because it is perfectly reasonable to use an empty address as part of a
1426 database query. An empty address is now tested by patterns that are
1427 lookups. However, all the other forms of pattern expect the subject to
1428 contain a local part and a domain, and therefore, for them, an empty
1429 address still always fails if the pattern is not itself empty.
1430
d8ef3577
PH
143130. Exim went into a mad DNS loop when attempting to do a callout where the
1432 host was specified on an smtp transport, and looking it up yielded more
1433 than one IP address.
1434
5cb8cbc6
PH
143531. Re-factored the code for checking spool and log partition space into a
1436 function that finds that data and another that does the check. The former
1437 is then used to implement four new variables: $spool_space, $log_space,
1438 $spool_inodes, and $log_inodes.
1439
14702f5b
PH
144032. The RFC2047 encoding function was originally intended for short strings
1441 such as real names; it was not keeping to the 75-character limit for
1442 encoded words that the RFC imposes. It now respects the limit, and
1443 generates multiple encoded words if necessary. To be on the safe side, I
1444 have increased the buffer size for the ${rfc2047: expansion operator from
1445 1024 to 2048 bytes.
1446
063b1e99
PH
144733. It is now permitted to omit both strings after an "if" condition; if the
1448 condition is true, the result is "true". As before, when the second string
1449 is omitted, a false condition yields an empty string. This makes it less
1450 cumbersome to write custom ACL and router conditions.
1451
652e1b65
PH
145234. Failure to deliver a bounce message always caused it to be frozen, even if
1453 there was an errors_to setting on the router. The errors_to setting is now
1454 respected.
1455
6f0c9a4f
PH
145635. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1457 canonical form (fully expanded) before being placed in
1458 $sender_host_address.
1459
33397d19
PH
146036. The table in the code that translates DNS record types into text (T_A to
1461 "A" for instance) was missing entries for NS and CNAME. It is just possible
1462 that this could have caused confusion if both these types were looked up
1463 for the same domain, because the text type is used as part of Exim's
1464 per-process caching. But the chance of anyone hitting this buglet seems
1465 very small.
1466
7bb56e1f
PH
146737. The dnsdb lookup has been extended in a number of ways.
1468
1469 (1) There is a new type, "zns", which walks up the domain tree until it
1470 finds some nameserver records. It should be used with care.
1471
ea3bc19b
PH
1472 (2) There is a new type, "mxh", which is like "mx" except that it returns
1473 just the host names, not the priorities.
1474
1475 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1476 looked up. The behaviour when one of the lookups defers can be
1477 controlled by a keyword.
7bb56e1f 1478
ea3bc19b 1479 (4) It is now possible to specify the separator character for use when
7bb56e1f 1480 multiple records are returned.
33397d19 1481
0bcb2a0e
PH
148238. The dnslists ACL condition has been extended: it is now possible to supply
1483 a list of IP addresses and/or domains to be looked up in a particular DNS
1484 domain.
1485
2ac0e484
PH
148639. Added log_selector=+queue_time_overall.
1487
4e1fde53
PH
148840. When running the queue in the test harness, wait just a tad after forking a
1489 delivery process, to get repeatability of debugging output.
1490
de365ded
PH
149141. Include certificate and key file names in error message when GnuTLS fails
1492 to set them up, because the GnuTLS error message doesn't include the name
1493 of the failing file when there is a problem reading it.
1494
f05da2e8
PH
149542. Allow both -bf and -bF in the same test run.
1496
d6453af2
PH
149743. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1498
f7b63901
PH
149944. The "Exiscan patch" is now merged into the mainline Exim source.
1500
150145. Sometimes the final signoff response after QUIT could fail to get
1502 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1503 < 0 before doing a fflush(). This bug looks as though it goes back to the
1504 introduction of TLS in release 3.20, but "sometimes" must have been rare
1505 because the tests only now provoked it.
1506
a444213a
PH
150746. Reset the locale to "C" after calling embedded Perl, in case it was changed
1508 (this can affect the format of dates).
1509
0ec020ea
PH
151047. exim_tidydb, when checking for the continued existence of a message for
1511 which it has found a message-specific retry record, was not finding
1512 messages that were in split spool directories. Consequently, it was
1513 deleting retry records that should have stayed in existence.
1514
b1206957
PH
151548. Steve fixed some bugs in eximstats.
1516
151749. The SPA authentication driver was not abandoning authentication and moving
1518 on to the next authenticator when an expansion was forced to fail,
1519 contradicting the general specification for all authenticators. Instead it
1520 was generating a temporary error. It now behaves as specified.
1521
26dd5a95
PH
152250. The default ordering of permitted cipher suites for GnuTLS was pessimal
1523 (the order specifies the preference for clients). The order is now AES256,
1524 AES128, 3DES, ARCFOUR128.
1525
343b2385
PH
152651. Small patch to Sieve code - explicitly set From: when generating an
1527 autoreply.
1528
1c5466b9
PH
152952. Exim crashed if a remote delivery caused a very long error message to be
1530 recorded - for instance if somebody sent an entire SpamAssassin report back
1531 as a large number of 550 error lines. This bug was coincidentally fixed by
1532 increasing the size of one of Exim's internal buffers (big_buffer) that
1533 happened as part of the Exiscan merge. However, to be on the safe side, I
1534 have made the code more robust (and fixed the comments that describe what
1535 is going on).
1536
55ee9ee3
PH
153753. Now that there can be additional text after "Completed" in log lines (if
1538 the queue_time_overall log selector is set), a one-byte patch to exigrep
1539 was needed to allow it to recognize "Completed" as not the last thing in
1540 the line.
1541
d38f8232
PH
154254. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1543 patch that reportedly fixes this has been added. I am not expert enough to
1544 create a test for it. This is what the patch creator wrote:
1545
1546 "I found a little strange behaviour of ldap code when working with
1547 Windows 2003 AD Domain, where users was placed in more than one
1548 Organization Units. When I tried to give exim partial DN, the exit code
1549 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1550 But simultaneously result of request was absolutely normal ldap result,
1551 so I produce this patch..."
1552
3295e65b
PH
1553 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1554 REFERENCE, so I have modified the code to exclude the patch when that macro
1555 is not defined.
1556
7102e136
PH
155755. Some experimental protocols are using DNS PTR records for new purposes. The
1558 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1559 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1560 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1561 CAN-2005-0021
7102e136 1562
3ca0ba97
PH
156356. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1564
c2bcbe20
PH
156557. Double the size of the debug message buffer (to 2048) so that more of very
1566 long debug lines gets shown.
1567
18ce445d
PH
156858. The exicyclog utility now does better if the number of log files to keep
1569 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
1570
1f5b4c3d
PH
157159. Two changes related to the smtp_active_hostname option:
1572
1573 (1) $smtp_active_hostname is now available as a variable.
1574 (2) The default for smtp_banner uses $smtp_active_hostname instead
1575 of $primary_hostname.
1576
b975ba52
PH
157760. The host_aton() function is supposed to be passed a string that is known
1578 to be a valid IP address. However, in the case of IPv6 addresses, it was
1579 not checking this. This is a hostage to fortune. Exim now panics and dies
1580 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
1581 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1582 components; fortuitously, this particular loophole had already been fixed
1583 by change 4.50/55 above.
1584
1585 If there are any other similar loopholes, the new check in host_aton()
1586 itself should stop them being exploited. The report I received stated that
1587 data on the command line could provoke the exploit when Exim was running as
1588 exim, but did not say which command line option was involved. All I could
1589 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1590 running as the user.
ea3a6f44 1591 CAN-2005-0021
85b87bc2
PH
1592
159361. There was a buffer overflow vulnerability in the SPA authentication code
1594 (which came originally from the Samba project). I have added a test to the
1595 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 1596 CAN-2005-0022
b975ba52 1597
17ffcae7
PH
159862. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
1599 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
1600
d95f9fdb
PH
160163. The daemon start-up calls getloadavg() while still root for those OS that
1602 need the first call to be done as root, but it missed one case: when
1603 deliver_queue_load_max is set with deliver_drop_privilege. This is
1604 necessary for the benefit of the queue runner, because there is no re-exec
1605 when deliver_drop_privilege is set.
1606
86b8287f
PH
160764. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
1608 This has been fixed.
1609
60dc5e56
PH
161065. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1611 was in use, was not putting the data itself into the right store pool;
1612 consequently, it could be overwritten for a subsequent message in the same
1613 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1614 the caching.)
1615
533244af
PH
161666. Added hosts_max_try_hardlimit to the smtp transport, default 50.
1617
a5a28604
PH
161867. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
1619 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
1620 the function were treating the return as a boolean value, which happened to
1621 work because 0=false and not-0=true, but is not correct code.
1622
7e634d24
PH
162368. The host_aton() function was not handling scoped IPv6 addresses (those
1624 with, for example, "%eth0" on the end) correctly.
1625
3e11c26b
PH
162669. Fixed some compiler warnings in acl.c for the bitmaps specified with
1627 negated items (that is, ~something) in unsigned ints. Some compilers
1628 apparently mutter when there is no cast.
1629
6729cf78
PH
163070. If an address verification called from an ACL failed, and did not produce a
1631 user-specific message (i.e. there was only a "system" message), nothing was
1632 put in $acl_verify_message. In this situation, it now puts the system
1633 message there.
1634
00f00ca5
PH
163571. Change 4.23/11 added synchronization checking at the start of an SMTP
1636 session; change 4.31/43 added the unwanted input to the log line - except
1637 that it did not do this in the start of session case. It now does.
1638
c9bdd01c
PH
163972. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
1640 This is wrong and can cause the other end to generate a synchronization
1641 error if it is another Exim or anything else that does the synchronization
1642 check. A QUIT command is no longer sent after a timeout.
1643
d43194df
PH
164473. $host_lookup_deferred has been added, to make it easier to detect DEFERs
1645 during host lookups.
1646
fe5b5d0b
PH
164774. The defer_ok option of callout verification was not working if it was used
1648 when verifying addresses in header lines, that is, for this case:
1649
1650 verify = header_sender/callout=defer_ok
1651
76a2d7ba
PH
165275. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
1653 those file descriptors could be used for SMTP connections. If anything
1654 wrote to stderr (the example that came up was "warn" in embedded Perl), it
1655 could be sent to the SMTP client, causing chaos. The daemon now opens
1656 stdin, stdout, and stderr to /dev/null when it puts itself into the
1657 background.
1658
165976. Arrange for output from Perl's "warn" command to be written to Exim's main
1660 log by default. The user can override this with suitable Perl magic.
1661
04f7d5b9
PH
166277. The use of log_message on a "discard" ACL verb, which is supposed to add to
1663 the log message when discard triggers, was not working for the DATA ACL or
1664 for the non-SMTP ACL.
1665
bc60667e
PH
166678. Error message wording change in sieve.c.
1667
bb6e88ff
PH
166879. If smtp_accept_max_per_host was set, the number of connections could be
1669 restricted to fewer than expected, because the daemon was trying to set up
1670 a new connection before checking whether the processes handling previous
1671 connections had finished. The check for completed processes is now done
1672 earlier. On busy systems, this bug wouldn't be noticed because something
1673 else would have woken the daemon, and it would have reaped the completed
1674 process earlier.
1675
1e70f85b
PH
167680. If a message was submitted locally by a user whose login name contained one
1677 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
1678 It caused a spool format error. I have fixed the spool reading code. A
1679 related problem was that the "from" clause in the Received: line became
1680 illegal because of the space(s). It is now covered by ${quote_local_part.
1681
168281. Included the latest eximstats from Steve (adds average sizes to HTML Top
1683 tables).
1684
4e01f9d6
PH
168582. Updated OS/Makefile-AIX as per message from Mike Meredith.
1686
1ee1cef2
PH
168783. Patch from Sieve maintainer to fix unterminated string problem in
1688 "vacation" handling.
1689
6e2b4ccc
PH
169084. Some minor changes to the Linux configuration files to help with other
1691 OS variants using glibc.
1692
8e669ac1
PH
169385. One more patch for Sieve to update vacation handling to latest spec.
1694
495ae4b0 1695
bbe902f0
PH
1696----------------------------------------------------
1697See the note above about the 4.44 and 4.50 releases.
1698----------------------------------------------------
1699
1700
1701Exim version 4.44
1702-----------------
1703
1704 1. Change 4.43/35 introduced a bug that caused file counts to be
1705 incorrectly computed when quota_filecount was set in an appendfile
1706 transport
1707
1708 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1709 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1710 place.
1711
1712 3. Give more explanation in the error message when the command for a transport
1713 filter fails to execute.
1714
1715 4. There are several places where Exim runs a non-Exim command in a
1716 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1717 was being done only for the command run by the queryprogram router. It is
1718 now done for all such subprocesses. The other cases are: ${run, transport
1719 filters, and the commands run by the lmtp and pipe transports.
1720
1721 5. Some older OS have a limit of 256 on the maximum number of file
1722 descriptors. Exim was using setrlimit() to set 1000 as a large value
1723 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1724 systems. I've change it so that if it can't get 1000, it tries for 256.
1725
1726 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1727 was an oversight, and furthermore, ever since the addition of extra
1728 controls (e.g. 4.43/32), the checks on when to allow different forms of
1729 "control" were broken. There should now be diagnostics for all cases when a
1730 control that does not make sense is encountered.
1731
1732 7. $recipients is now available in the predata ACL (oversight).
1733
1734 8. Tidy the search cache before the fork to do a delivery from a message
1735 received from the command line. Otherwise the child will trigger a lookup
1736 failure and thereby defer the delivery if it tries to use (for example) a
1737 cached ldap connection that the parent has called unbind on.
1738
1739 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1740 of $address_data from the recipient verification was clobbered by the
1741 sender verification.
1742
174310. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1744 was its contents. (It was OK if the option was not defined at all.)
1745
174611. A "Completed" log line is now written for messages that are removed from
1747 the spool by the -Mrm option.
1748
174912. $host_address is now set to the target address during the checking of
1750 ignore_target_hosts.
1751
175213. When checking ignore_target_hosts for an ipliteral router, no host name was
1753 being passed; this would have caused $sender_host_name to have been used if
1754 matching the list had actually called for a host name (not very likely,
1755 since this list is usually IP addresses). A host name is now passed as
1756 "[x.x.x.x]".
1757
175814. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1759 code that specifies a non-restarting handler (typically sigaction() in
1760 modern systems) in an attempt to fix a rare and obscure crash bug.
1761
176215. Narrowed the window for a race in the daemon that could cause it to ignore
1763 SIGCHLD signals. This is not a major problem, because they are used only to
1764 wake it up if nothing else does.
1765
176616. A malformed maildirsize file could cause Exim to calculate negative values
1767 for the mailbox size or file count. Odd effects could occur as a result.
1768 The maildirsize information is now recalculated if the size or filecount
1769 end up negative.
1770
177117. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1772 support for a long time. Removed HAVE_SYS_VFS_H.
1773
ea3a6f44 177418. Updated exipick to current release from John Jetmore.
bbe902f0
PH
1775
177619. Allow an empty sender to be matched against a lookup in an address list.
1777 Previously the only cases considered were a regular expression, or an
1778 empty pattern.
1779
178020. Exim went into a mad DNS lookup loop when doing a callout where the
1781 host was specified on the transport, if the DNS lookup yielded more than
1782 one IP address.
1783
ea3a6f44
NM
178421. The RFC2047 encoding function was originally intended for short strings
1785 such as real names; it was not keeping to the 75-character limit for
1786 encoded words that the RFC imposes. It now respects the limit, and
1787 generates multiple encoded words if necessary. To be on the safe side, I
1788 have increased the buffer size for the ${rfc2047: expansion operator from
1789 1024 to 2048 bytes.
bbe902f0 1790
ea3a6f44
NM
179122. Failure to deliver a bounce message always caused it to be frozen, even if
1792 there was an errors_to setting on the router. The errors_to setting is now
1793 respected.
bbe902f0
PH
1794
179523. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1796 canonical form (fully expanded) before being placed in
1797 $sender_host_address.
1798
179924. Updated eximstats to version 1.33
1800
ea3a6f44
NM
180125. Include certificate and key file names in error message when GnuTLS fails
1802 to set them up, because the GnuTLS error message doesn't include the name
1803 of the failing file when there is a problem reading it.
bbe902f0
PH
1804
180526. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 1806 As per change 25.
bbe902f0 1807
ea3a6f44
NM
180827. Reset the locale to "C" after calling embedded Perl, in case it was changed
1809 (this can affect the format of dates).
bbe902f0 1810
ea3a6f44
NM
181128. exim_tidydb, when checking for the continued existence of a message for
1812 which it has found a message-specific retry record, was not finding
1813 messages that were in split spool directories. Consequently, it was
1814 deleting retry records that should have stayed in existence.
bbe902f0
PH
1815
181629. eximstats updated to version 1.35
1817 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
1818 1.35 - bugfix such that pie charts by volume are generated correctly
1819
ea3a6f44
NM
182030. The SPA authentication driver was not abandoning authentication and moving
1821 on to the next authenticator when an expansion was forced to fail,
1822 contradicting the general specification for all authenticators. Instead it
1823 was generating a temporary error. It now behaves as specified.
bbe902f0 1824
ea3a6f44
NM
182531. The default ordering of permitted cipher suites for GnuTLS was pessimal
1826 (the order specifies the preference for clients). The order is now AES256,
1827 AES128, 3DES, ARCFOUR128.
bbe902f0 1828
ea3a6f44
NM
182931. Small patch to Sieve code - explicitly set From: when generating an
1830 autoreply.
bbe902f0 1831
ea3a6f44
NM
183232. Exim crashed if a remote delivery caused a very long error message to be
1833 recorded - for instance if somebody sent an entire SpamAssassin report back
1834 as a large number of 550 error lines. This bug was coincidentally fixed by
1835 increasing the size of one of Exim's internal buffers (big_buffer) that
1836 happened as part of the Exiscan merge. However, to be on the safe side, I
1837 have made the code more robust (and fixed the comments that describe what
1838 is going on).
bbe902f0 1839
ea3a6f44
NM
184033. Some experimental protocols are using DNS PTR records for new purposes. The
1841 keys for these records are domain names, not reversed IP addresses. The
1842 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1843 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
1844 CAN-2005-0021
1845
ea3a6f44
NM
184634. The host_aton() function is supposed to be passed a string that is known
1847 to be a valid IP address. However, in the case of IPv6 addresses, it was
1848 not checking this. This is a hostage to fortune. Exim now panics and dies
1849 if the condition is not met. A case was found where this could be provoked
1850 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1851 components; fortuitously, this particular loophole had already been fixed
1852 by change 4.50/55 or 4.44/33 above.
1853
1854 If there are any other similar loopholes, the new check in host_aton()
1855 itself should stop them being exploited. The report I received stated that
1856 data on the command line could provoke the exploit when Exim was running as
1857 exim, but did not say which command line option was involved. All I could
1858 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1859 running as the user.
bbe902f0
PH
1860 CAN-2005-0021
1861
ea3a6f44
NM
186235. There was a buffer overflow vulnerability in the SPA authentication code
1863 (which came originally from the Samba project). I have added a test to the
1864 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
1865 CAN-2005-0022
1866
ea3a6f44
NM
186736. The daemon start-up calls getloadavg() while still root for those OS that
1868 need the first call to be done as root, but it missed one case: when
1869 deliver_queue_load_max is set with deliver_drop_privilege. This is
1870 necessary for the benefit of the queue runner, because there is no re-exec
1871 when deliver_drop_privilege is set.
bbe902f0 1872
ea3a6f44
NM
187337. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1874 was in use, was not putting the data itself into the right store pool;
1875 consequently, it could be overwritten for a subsequent message in the same
1876 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1877 the caching.)
bbe902f0 1878
ea3a6f44
NM
187938. Sometimes the final signoff response after QUIT could fail to get
1880 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1881 < 0 before doing a fflush(). This bug looks as though it goes back to the
1882 introduction of TLS in release 3.20, but "sometimes" must have been rare
1883 because the tests only now provoked it.
bbe902f0
PH
1884
1885
495ae4b0
PH
1886Exim version 4.43
1887-----------------
1888
1889 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
1890 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
1891 Now it returns an integer. A number of calls were still expecting a T/F
1892 return. Fortuitously, in all cases, the tests worked in OK situations,
1893 which is the norm. However, things would have gone wrong on any write
1894 failures on the smtp file descriptor. This function is used when sending
1895 messages over SMTP and also when doing verify callouts.
1896
1897 2. When Exim is called to do synchronous delivery of a locally submitted
1898 message (the -odf or -odi options), it no longer closes stderr before doing
1899 the delivery.
1900
1901 3. Implemented the mua_wrapper option.
1902
1903 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
1904
1905 5. Implemented the functions header_remove(), header_testname(),
1906 header_add_at_position(), and receive_remove_recipient(), and exported them
1907 to local_scan().
1908
1909 6. If an ACL "warn" statement specified the addition of headers, Exim already
1910 inserted X-ACL-Warn: at the start if there was no header name. However, it
1911 was not making this test for the second and subsequent header lines if
1912 there were newlines in the string. This meant that an invalid header could
1913 be inserted if Exim was badly configured.
1914
1915 7. Allow an ACL "warn" statement to add header lines at the start or after all
1916 the Received: headers, as well as at the end.
1917
1918 8. Added the rcpt_4xx retry error code.
1919
1920 9. Added postmaster_mailfrom=xxx to callout verification option.
1921
192210. Added mailfrom=xxxx to the callout verification option, for verify=
1923 header_sender only.
1924
192511. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
1926 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
1927
192812. Inserted some casts to stop certain compilers warning when using pointer
1929 differences as field lengths or precisions in printf-type calls (mostly
1930 affecting debugging statements).
1931
193213. Added optional readline() support for -be (dynamically loaded).
1933
193414. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
1935 same clock tick as a message's arrival, so that its received time was the
1936 same as the "first fail" time on the retry record, and that message
1937 remained on the queue past the ultimate address timeout, every queue runner
1938 would try a delivery (because it was past the ultimate address timeout) but
1939 after another failure, the ultimate address timeout, which should have then
1940 bounced the address, did not kick in. This was a "< instead of <=" error;
1941 in most cases the first failure would have been in the next clock tick
1942 after the received time, and all would be well.
1943
194415. The special items beginning with @ in domain lists (e.g. @mx_any) were not
1945 being recognized when the domain list was tested by the match_domain
1946 condition in an expansion string.
1947
194816. Added the ${str2b64: operator.
1949
195017. Exim was always calling setrlimit() to set a large limit for the number of
1951 processes, without checking whether the existing limit was already
1952 adequate. (It did check for the limit on file descriptors.) Furthermore,
1953 errors from getrlimit() and setrlimit() were being ignored. Now they are
1954 logged to the main and panic logs, but Exim does carry on, to try to do its
1955 job under whatever limits there are.
1956
195718. Imported PCRE 5.0.
1958
195919. Trivial typo in log message " temporarily refused connection" (the leading
1960 space).
1961
196220. If the log selector return_path_on_delivery was set and an address was
1963 redirected to /dev/null, the delivery process crashed because it assumed
1964 that a return path would always be set for a "successful" delivery. In this
1965 case, the whole delivery is bypassed as an optimization, and therefore no
1966 return path is set.
1967
196821. Internal re-arrangement: the function for sending a challenge and reading
1969 a response while authentication was assuming a zero-terminated challenge
1970 string. It's now changed to take a pointer and a length, to allow for
1971 binary data in such strings.
1972
197322. Added the cyrus_sasl authenticator (code supplied by MBM).
1974
197523. Exim was not respecting finduser_retries when seeking the login of the
1976 uid under which it was called; it was always trying 10 times. (The default
1977 setting of finduser_retries is zero.) Also, it was sleeping after the final
1978 failure, which is pointless.
1979
198024. Implemented tls_on_connect_ports.
1981
198225. Implemented acl_smtp_predata.
1983
198426. If the domain in control=submission is set empty, Exim assumes that the
1985 authenticated id is a complete email address when it generates From: or
1986 Sender: header lines.
1987
198827. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
1989 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
1990 chown and chgrp in /bin and hostname in /usr/bin.
1991
199228. Exim was keeping the "process log" file open after each use, just as it
1993 does for the main log. This opens the possibility of it remaining open for
1994 long periods when the USR1 signal hits a daemon. Occasional processlog
1995 errors were reported, that could have been caused by this. Anyway, it seems
1996 much more sensible not to leave this file open at all, so that is what now
1997 happens.
1998
199929. The long-running daemon process does not normally write to the log once it
2000 has entered its main loop, and it closes the log before doing so. This is
2001 so that log files can straightforwardly be renamed and moved. However,
2002 there are a couple of unusual error situations where the daemon does write
2003 log entries, and I had neglected to close the log afterwards.
2004
200530. The text of an SMTP error response that was received during a remote
2006 delivery was being truncated at 512 bytes. This is too short for some of
2007 the long messages that one sometimes sees. I've increased the limit to
2008 1024.
2009
201031. It is now possible to make retry rules that apply only when a message has a
2011 specific sender, in particular, an empty sender.
2012
201332. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2014 it possible to be selective about when SMTP synchronization is enforced.
2015
201633. Added "control = caseful_local_part" and "control = "caselower_local_part".
2017
201832. Implemented hosts_connection_nolog.
2019
202033. Added an ACL for QUIT.
2021
202234. Setting "delay_warning=" to disable warnings was not working; it gave a
2023 syntax error.
2024
202535. Added mailbox_size and mailbox_filecount to appendfile.
2026
202736. Added control = no_multiline_responses to ACLs.
2028
202937. There was a bug in the logic of the code that waits for the clock to tick
2030 in the case where the clock went backwards by a substantial amount such
2031 that the microsecond fraction of "now" was more than the microsecond
2032 fraction of "then" (but the whole seconds number was less).
2033
203438. Added support for the libradius Radius client library this is found on
2035 FreeBSD (previously only the radiusclient library was supported).
2036
2037
2038Exim version 4.42
2039-----------------
2040
2041 1. When certain lookups returned multiple values in the form name=value, the
2042 quoting of the values was not always being done properly. Specifically:
2043 (a) If the value started with a double quote, but contained no whitespace,
2044 it was not quoted.
2045 (b) If the value contained whitespace other than a space character (i.e.
2046 tabs or newlines or carriage returns) it was not quoted.
2047 This fix has been applied to the mysql and pgsql lookups by writing a
2048 separate quoting function and calling it from the lookup code. The fix
2049 should probably also be applied to nisplus, ibase and oracle lookups, but
2050 since I cannot test any of those, I have not disturbed their existing code.
2051
2052 2. A hit in the callout cache for a specific address caused a log line with no
2053 reason for rejecting RCPT. Now it says "Previous (cached) callout
2054 verification failure".
2055
2056 3. There was an off-by-one bug in the queryprogram router. An over-long
2057 return line was truncated at 256 instead of 255 characters, thereby
2058 overflowing its buffer with the terminating zero. As well as fixing this, I
2059 have increased the buffer size to 1024 (and made a note to document this).
2060
2061 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2062 when Exim is waiting for an SMTP response from a remote server, Exim
2063 restarts its select() call on the socket, thereby resetting its timeout.
2064 This is not a problem when such interrupts are rare. Somebody set up a cron
2065 job to run exiwhat every 2 minutes, which is less than the normal select()
2066 timeout (5 or 10 minutes). This meant that the select() timeout never
2067 kicked in because it was always reset. I have fixed this by comparing the
2068 time when an interrupt arrives with the time at the start of the first call
2069 to select(). If more time than the timeout has elapsed, the interrupt is
2070 treated as a timeout.
2071
2072 5. Some internal re-factoring in preparation for the addition of Sieve
2073 extensions (by MH). In particular, the "personal" test is moved to a
2074 separate function, and given an option for scanning Cc: and Bcc: (which is
2075 not set for Exim filters).
2076
2077 6. When Exim created an email address using the login of the caller as the
2078 local part (e.g. when creating a From: or Sender: header line), it was not
2079 quoting the local part when it contained special characters such as @.
2080
2081 7. Installed new OpenBSD configuration files.
2082
2083 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2084 try to make them clearer.
2085
2086 9. Callout options, other than the timeout value, were being ignored when
2087 verifying sender addresses in header lines. For example, when using
2088
2089 verify = header_sender/callout=no_cache
2090
2091 the cache was (incorrectly) being used.
2092
209310. Added a missing instance of ${EXE} to the exim_install script; this affects
2094 only the Cygwin environment.
2095
209611. When return_path_on_delivery was set as a log selector, if different remote
2097 addresses in the same message used different return paths and parallel
2098 remote delivery occurred, the wrong values would sometimes be logged.
2099 (Whenever a remote delivery process finished, the return path value from
2100 the most recently started remote delivery process was logged.)
2101
210212. RFC 3848 specifies standard names for the "with" phrase in Received: header
2103 lines when AUTH and/or TLS are in use. This is the "received protocol"
2104 field. Exim used to use "asmtp" for authenticated SMTP, without any
2105 indication (in the protocol name) for TLS use. Now it follows the RFC and
2106 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2107 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2108 names appear in log lines as well as in Received: header lines.
2109
211013. Installed MH's patches for Sieve to add the "copy" and "vacation"
2111 extensions, and comparison tests, and to fix some bugs.
2112
211314. Changes to the "personal" filter test:
2114
2115 (1) The test was buggy in that it was just doing the equivalent of
2116 "contains" tests on header lines. For example, if a user's address was
2117 anne@some.where, the "personal" test would incorrectly be true for
2118
2119 To: susanne@some.where
2120
2121 This test is now done by extracting each address from the header in turn,
2122 and checking the entire address. Other tests that are part of "personal"
2123 are now done using regular expressions (for example, to check local parts
2124 of addresses in From: header lines).
2125
2126 (2) The list of non-personal local parts in From: addresses has been
2127 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2128 taken from the Sieve specification recommendations.
2129
2130 (3) If the message contains any header line starting with "List-" it is
2131 treated as non-personal.
2132
2133 (4) The test for "circular" in the Subject: header line has been removed
2134 because it now seems ill-conceived.
2135
213615. Minor typos in src/EDITME comments corrected.
2137
213816. Installed latest exipick from John Jetmore.
2139
214017. If headers_add on a router specified a text string that was too long for
2141 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2142 of string_sprintf() is now avoided.
2143
214418. $message_body_size was not set (it was always zero) when running the DATA
2145 ACL and the local_scan() function.
2146
214719. For the "mail" command in an Exim filter, no default was being set for
2148 the once_repeat time, causing a random time value to be used if "once" was
2149 specified. (If the value happened to be <= 0, no repeat happened.) The
2150 default is now 0s, meaning "never repeat". The "vacation" command was OK
2151 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2152 (I found it when inspecting the code).
2153
215420. There is now an overall timeout for performing a callout verification. It
2155 defaults to 4 times the callout timeout, which applies to individual SMTP
2156 commands during the callout. The overall timeout applies when there is more
2157 than one host that can be tried. The timeout is checked before trying the
2158 next host. This prevents very long delays if there are a large number of
2159 hosts and all are timing out (e.g. when the network connections are timing
2160 out). The value of the overall timeout can be changed by specifying an
2161 additional sub-option for "callout", called "maxwait". For example:
2162
2163 verify = sender/callout=5s,maxwait=20s
2164
216521. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2166 to the end before writing, but this should make it even safer).
2167
216822. Exim was forgetting that it had advertised PIPELINING for the second and
2169 subsequent messages on an SMTP connection. It was also not resetting its
2170 memory on STARTTLS and an internal HELO.
2171
217223. When Exim logs an SMTP synchronization error within a session, it now
2173 records whether PIPELINING has been advertised or not.
2174
217524. Added 3 instances of "(long int)" casts to time_t variables that were being
2176 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2177 rather than long int.
2178
217925. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2180
218126. Added the never_mail option to autoreply.
2182
2183
2184Exim version 4.41
2185-----------------
2186
2187 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2188 crash if the getsockname() call failed; this can happen if a connection is
2189 closed very soon after it is established. The problem was simply in the
2190 order in which certain operations were done, causing Exim to try to write
2191 to the SMTP stream before it had set up the file descriptor. The bug has
2192 been fixed by making things happen in the correct order.
2193
2194
2195Exim version 4.40
2196-----------------
2197
2198 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2199 before the connection was closed, thus losing the rejection response.
2200
2201 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2202 some early Solaris releases, but causes trouble in current releases where
2203 socklen_t is defined.
2204
2205 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2206 always exist.
2207
2208 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2209 configured.
2210
2211 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2212 that releasing the top of it at the end releases what was used for sub-
2213 expansions (unless the block got too big). However, discard this block if
2214 the first thing is a variable or header, so that we can use its block when
2215 it is dynamic (useful for very large $message_headers, for example).
2216
2217 6. Lookups now cache *every* query, not just the most recent. A new, separate
2218 store pool is used for this. It can be recovered when all lookup caches are
2219 flushed. Lookups now release memory at the end of their result strings.
2220 This has involved some general refactoring of the lookup sources.
2221
2222 7. Some code has been added to the store_xxx() functions to reduce the amount
2223 of flapping under certain conditions.
2224
2225 8. log_incoming_interface used to affect only the <= reception log lines. Now
2226 it causes the local interface and port to be added to several more SMTP log
2227 lines, for example "SMTP connection from", and rejection lines.
2228
2229 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2230
223110. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2232
223311. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2234 could be overwritten at the end of the current message (or the start of a
2235 new message if it was set in a HELO ACL). The value is now preserved for
2236 the duration of the SMTP connection.
2237
223812. If a transport had a headers_rewrite setting, and a matching header line
2239 contained an unqualified address, that address was qualified, even if it
2240 did not match any rewriting rules. The underlying bug was that the values
2241 of the flags that permit the existence of unqualified sender and recipient
2242 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2243 non-local messages, and by -bnq for local messages) were not being
2244 preserved with the message after it was received.
2245
224613. When Exim was logging an SMTP synchronization error, it could sometimes log
2247 "next input=" as part of the text comprising the host identity instead of
2248 the correct text. The code was using the same buffer for two different
2249 strings. However, depending on which order the printing function evaluated
2250 its arguments, the bug did not always show up. Under Linux, for example, my
2251 test suite worked just fine.
2252
225314. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2254 doesn't work with some older versions of Perl. It has been changed to "my",
2255 which in any case is probably the better facility to use.
2256
225715. A really picky compiler found some instances of statements for creating
2258 error messages that either had too many or two few arguments for the format
2259 string.
2260
226116. The size of the buffer for calls to the DNS resolver has been increased
2262 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2263 for addresses that have a lot of PTR records. This alleviates a problem; it
2264 does not fully solve it.
2265
226617. A dnsdb lookup for PTR records that receives more data than will fit in the
2267 buffer now truncates the list and logs the incident, which is the same
2268 action as happens when Exim is looking up a host name and its aliases.
2269 Previously in this situation something unpredictable would happen;
2270 sometimes it was "internal error: store_reset failed".
2271
227218. If a server dropped the connection unexpectedly when an Exim client was
2273 using GnuTLS and trying to read a response, the client delivery process
2274 crashed while trying to generate an error log message.
2275
227619. If a "warn" verb in an ACL added multiple headers to a message in a single
2277 string, for example:
2278
2279 warn message = H1: something\nH2: something
2280
2281 the text was added as a single header line from Exim's point of view
2282 though it ended up OK in the delivered message. However, searching for the
2283 second and subsequent header lines using $h_h2: did not work. This has been
2284 fixed. Similarly, if a system filter added multiple headers in this way,
2285 the routers could not see them.
2286
228720. Expanded the error message when iplsearch is called with an invalid key to
2288 suggest using net-iplsearch in a host list.
2289
229021. When running tests using -bh, any delays imposed by "delay" modifiers in
2291 ACLs are no longer actually imposed (and a message to that effect is
2292 output).
2293
229422. If a "gecos" field in a passwd entry contained escaped characters, in
2295 particular, if it contained a \" sequence, Exim got it wrong when building
2296 a From: or a Sender: header from that name. A second bug also caused
2297 incorrect handling when an unquoted " was present following a character
2298 that needed quoting.
2299
230023. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2301 was not being matched caselessly.
2302
230324. Arranged for all hyphens in the exim.8 source to be escaped with
2304 backslashes.
2305
230625. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2307 properly. Recipient callout cache records were still being keyed to include
2308 the sender, even when use_sender was set false. This led to far more
2309 callouts that were necessary. The sender is no longer included in the key
2310 when use_sender is false.
2311
231226. Added "control = submission" modifier to ACLs.
2313
231427. Added the ${base62d: operator to decode base 62 numbers.
2315
231628. dnsdb lookups can now access SRV records.
2317
231829. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2319 the configuration file.
2320
232130. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2322 (-v) mode. This makes the output for a verbose queue run more intelligible.
2323
232431. Added a use_postmaster feature to recipient callouts.
2325
232632. Added the $body_zerocount variable, containing the number of binary zero
2327 bytes in the message body.
2328
232933. The time of last modification of the "new" subdirectory is now used as the
2330 "mailbox time last read" when there is a quota error for a maildir
2331 delivery.
2332
233334. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2334
233535. Added +ignore_unknown as a special item in host lists.
2336
233736. Code for decoding IPv6 addresses in host lists is now included, even if
2338 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2339 address was recognized as an IP address, but was then not correctly decoded
2340 into binary, causing unexpected and incorrect effects when compared with
2341 another IP address.
2342
2343
2344Exim version 4.34
2345-----------------
2346
2347 1. Very minor rewording of debugging text in manualroute to say "list of
2348 hosts" instead of "hostlist".
2349
2350 2. If verify=header_syntax was set, and a header line with an unqualified
2351 address (no domain) and a large number of spaces between the end of the
2352 name and the colon was received, the reception process suffered a buffer
2353 overflow, and (when I tested it) crashed. This was caused by some obsolete
2354 code that should have been removed. The fix is to remove it!
2355
2356 3. When running in the test harness, delay a bit after writing a bounce
2357 message to get a bit more predictability in the log output.
2358
2359 4. Added a call to search_tidyup() just before forking a reception process. In
2360 theory, someone could use a lookup in the expansion of smtp_accept_max_
2361 per_host which, without the tidyup, could leave open a database connection.
2362
2363 5. Added the variables $recipient_data and $sender_data which get set from a
2364 lookup success in an ACL "recipients" or "senders" condition, or a router
2365 "senders" option, similar to $domain_data and $local_part_data.
2366
2367 6. Moved the writing of debug_print from before to after the "senders" test
2368 for routers.
2369
2370 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2371 problems for message scanning, either using a data ACL, or using
2372 local_scan() because the Received: header was not generated till after they
2373 were called (in order to set the time as the time of reception completion).
2374 I have revised the way this works. The header is now generated after the
2375 body is received, but before the ACL or local_scan() are called. After they
2376 are run, the timestamp in the header is updated.
2377
2378
2379Exim version 4.33
2380-----------------
2381
2382 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2383 before starting a queue runner without re-exec. This happened only when
2384 deliver_drop_privilege was set or when the Exim user was set to root. The
2385 effect of the bug was that timeouts during subsequent deliveries caused
2386 crashes instead of being properly handled. The handler is now left at its
2387 default (and expected) setting.
2388
2389 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2390 message, again when deliver_drop_privilege is set or Exim is run as root.
2391 The bug described in (1) was not present in this case, but the tidying up
2392 of the other signals was missing. I have made the two cases consistent.
2393
2394 3. The ignore_target_hosts setting on a manualroute router was being ignored
2395 for hosts that were looked up using the /MX notation.
2396
2397 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2398 in domain lists.
2399
2400 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2401 operated on the sender address. After changing the $sender_address to <>
2402 for the sender address verify, Exim was re-instated it as the original
2403 (before rewriting) address, but remembering that it had rewritten it, so it
2404 wasn't rewriting it again. This bug also had the effect of breaking the
2405 sender address verification caching when the sender address was rewritten.
2406
2407 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2408 This has been changed so that if the ip literal address matches
2409 ignore_target_hosts, the router declines.
2410
2411 7. Added expansion conditions match_domain, match_address, and match_local_
2412 part (NOT match_host).
2413
2414 8. The placeholder for the Received: header didn't have a length field set.
2415
2416 9. Added code to Exim itself and to exim_lock to test for a specific race
2417 condition that could lead to file corruption when using MBX delivery. The
2418 issue is with the lockfile that is created in /tmp. If this file is removed
2419 after a process has opened it but before that process has acquired a lock,
2420 there is the potential for a second process to recreate the file and also
2421 acquire a lock. This could lead to two Exim processes writing to the file
2422 at the same time. The added code performs the same test as UW imapd; it
2423 checks after acquiring the lock that its file descriptor still refers to
2424 the same named file.
2425
242610. The buffer for building added header lines was of fixed size, 8192 bytes.
2427 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2428 when Exim is built.
2429
243011. Added the smtp_active_hostname option. If used, this will typically be made
2431 to depend on the incoming interface address. Because $interface_address is
2432 not set up until the daemon has forked a reception process, error responses
2433 that can happen earlier (such as "too many connections") no longer contain
2434 a host name.
2435
243612. If an expansion in a condition on a "warn" statement fails because a lookup
2437 defers, the "warn" statement is abandoned, and the next ACL statement is
2438 processed. Previously this caused the whole ACL to be aborted.
2439
244013. Added the iplsearch lookup type.
2441
244214. Added ident_timeout as a log selector.
2443
244415. Added tls_certificate_verified as a log selector.
2445
244616. Added a global option tls_require_ciphers (compare the smtp transport
2447 option of the same name). This controls incoming TLS connections.
2448
244917. I finally figured out how to make tls_require_ciphers do a similar thing
2450 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2451 before starting the TLS session.
2452
245318. Tabs are now shown as \t in -bP output.
2454
245519. If the log selector return_path_on_delivery was set, Exim crashed when
2456 bouncing a message because it had too many Received: header lines.
2457
245820. If two routers both had headers_remove settings, and the first one included
2459 a superfluous trailing colon, the final name in the first list and the
2460 first name in the second list were incorrectly joined into one item (with a
2461 colon in the middle).
2462
2463
2464Exim version 4.32
2465-----------------
2466
2467 1. Added -C and -D options to the exinext utility, mainly to make it easier
2468 to include in the automated testing, but these could be helpful when
2469 multiple configurations are in use.
2470
2471 2. The exinext utility was not formatting the output nicely when there was
2472 an alternate port involved in the retry record key, nor when there was a
2473 message id as well (for retries that were specific to a specific message
2474 and a specific host). It was also confused by IPv6 addresses, because of
2475 the additional colons they contain. I have fixed the IPv4 problem, and
2476 patched it up to do a reasonable job for IPv6.
2477
2478 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2479 delivery, the log line now contains "pipelined" if PIPELINING was used.
2480
2481 4. An SMTP transport process used to panic and die if the bind() call to set
2482 an explicit outgoing interface failed. This has been changed; it is now
2483 treated in the same way as a connect() failure.
2484
2485 5. A reference to $sender_host_name in the part of a conditional expansion
2486 that was being skipped was still causing a DNS lookup. This no longer
2487 occurs.
2488
2489 6. The def: expansion condition was not recognizing references to header lines
2490 that used bh_ and bheader_.
2491
2492 7. Added the _cache feature to named lists.
2493
2494 8. The code for checking quota_filecount in the appendfile transport was
2495 allowing one more file than it should have been.
2496
2497 9. For compatibility with Sendmail, the command line option
2498
2499 -prval:sval
2500
2501 is equivalent to
2502
2503 -oMr rval -oMs sval
2504
2505 and sets the incoming protocol and host name (for trusted callers). The
2506 host name and its colon can be omitted when only the protocol is to be set.
2507 Note the Exim already has two private options, -pd and -ps, that refer to
2508 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2509 "s", but I don't think that's a major issue.
2510
251110. A number of refactoring changes to the code, none of which should affect
2512 Exim's behaviour:
2513
2514 (a) The number of logging options was getting close to filling up the
2515 32-bit word that was used as a bit map. I have split them into two classes:
2516 those that are passed in the argument to log_write(), and those that are
2517 only ever tested independently outside of that function. These are now in
2518 separate 32-bit words, so there is plenty of room for expansion again.
2519 There is no change in the user interface or the logging behaviour.
2520
2521 (b) When building, for example, log lines, the code previously used a
2522 macro that called string_cat() twice, in order to add two strings. This is
2523 not really sufficiently general. Furthermore, there was one instance where
2524 it was actually wrong because one of the argument was used twice, and in
2525 one call a function was used. (As it happened, calling the function twice
2526 did not affect the overall behaviour.) The macro has been replaced by a
2527 function that can join an arbitrary number of extra strings onto a growing
2528 string.
2529
2530 (c) The code for expansion conditions now uses a table and a binary chop
2531 instead of a serial search (which was left over from when there were very
2532 few conditions). Also, it now recognizes conditions like "pam" even when
2533 the relevant support is not compiled in: a suitably worded error message is
2534 given if an attempt is made to use such a condition.
2535
253611. Added ${time_interval:xxxxx}.
2537
253812. A bug was causing one of the ddress fields not to be passed back correctly
2539 from remote delivery subprocesses. The field in question was not being
2540 subsequently used, so this caused to problems in practice.
2541
254213. Added new log selectors queue_time and deliver_time.
2543
254414. Might have fixed a bug in maildirsizefile handling that threw up
2545 "unexpected character" debug warnings, and recalculated the data
2546 unnecessarily. In any case, I expanded the warning message to give more
2547 information.
2548
254915. Added the message "Restricted characters in address" to the statements in
2550 the default ACL that block characters like @ and % in local parts.
2551
255216. Change 71 for release 4.31 proved to be much less benign that I imagined.
2553 Three changes have been made:
2554
2555 (a) There was a serious bug; a negative response to MAIL caused the whole
2556 recipient domain to be cached as invalid, thereby blocking all messages
2557 to all local parts at the same domain, from all senders. This bug has
2558 been fixed. The domain is no longer cached after a negative response to
2559 MAIL if the sender used is not empty.
2560
2561 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2562 been restored.
2563
2564 (c) A new callout option, "use_sender" has been added for people who want
2565 the modified behaviour.
2566
2567
2568Exim version 4.31
2569-----------------
2570
2571 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
2572 Larry Rosenman.
2573
2574 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
2575 indeed breaks things for older releases.
2576
2577 3. Added additional logging to the case where there is a problem reading data
2578 from a filter that is running in a subprocess using a pipe, in order to
2579 try to track down a specific problem.
2580
2581 4. Testing facility fudge: when running in the test harness and attempting
2582 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
2583 getting "No route to host". Convert this to a timeout.
2584
2585 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
2586 warning.
2587
2588 6. Some OS don't have socklen_t but use size_t instead. This affects the
2589 fifth argument of getsockopt() amongst other things. This is now
2590 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
2591 can be set for individual OS. I have set it for SunOS5, OSF1, and
2592 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
2593 some earlier ones do not.
2594
2595 7. Change 4.30/15 was not doing the test caselessly.
2596
2597 8. The standard form for an IPv6 address literal was being rejected by address
2598 parsing in, for example, MAIL and RCPT commands. An example of this kind of
2599 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
2600 this, as well as the form without the "IPv6" on the front (but only when
2601 address literals are enabled, of course).
2602
2603 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
2604
260510. Exim crashed if a message with an empty sender address specified by -f
2606 encountered a router with an errors_to setting. This could be provoked only
2607 by a command such as
2608
2609 exim -f "" ...
2610
2611 where an empty string was supplied; "<>" did not hit this bug.
2612
261311. Installed PCRE release 4.5.
2614
261512. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
2616 remained set. It is now erased.
2617
261813. exiqgrep wasn't working on MacOS X because it didn't correctly compute
2619 times from message ids (which are base 36 rather than the normal 62).
2620
262114. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
2622 were being counted as actual protocol errors, and logged if the log
2623 selector +smtp_protocol_error was set. One cannot be perfect in this test,
2624 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
2625 and DATA following a set of rejected RCPTs do not count as protocol errors.
2626 In other words, Exim assumes they were pipelined, though this may not
2627 actually be the case. Of course, in all cases the client gets an
2628 appropriate error code.
2629
263015. If a lookup fails in an ACL condition, a message about the failure may
2631 be available; it is used if testing the ACL cannot continue, because most
2632 such messages specify what the cause of the deferral is. However, some
2633 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
2634 that caused an old message to be retained and used if a later statement
2635 caused a defer, replacing the real cause of the deferral.
2636
263716. If an IP address had so many PTR records that the DNS lookup buffer
2638 was not large enough to hold them, Exim could crash while trying to process
2639 the truncated data. It now detects and logs this case.
2640
264117. Further to 4.21/58, another change has been made: if (and only if) the
2642 first line of a message (the first header line) ends with CRLF, a bare LF
2643 in a subsequent header line has a space inserted after it, so as not to
2644 terminate the header.
2645
264618. Refactoring: tidied an ugly bit of code in appendfile that copied data
2647 unnecessarily, used atoi() instead of strtol(), and didn't check the
2648 termination when getting file sizes from file names by regex.
2649
265019. Completely re-implemented the support for maildirsize files, in the light
2651 of a number of problems with the previous contributed implementation
2652 (4.30/29). In particular:
2653
2654 . If the quota is zero, the maildirsize file is maintained, but no quota is
2655 imposed.
2656
2657 . If the maildir directory does not exist, it is created before any attempt
2658 to write a maildirsize file.
2659
2660 . The quota value in the file is just a cache; if the quota is changed in
2661 the transport, the new value overrides.
2662
2663 . A regular expression is available for excluding directories from the
2664 count.
2665
266620. The autoreply transport checks the characters in options that define the
2667 message's headers; it allows continued headers, but it was checking with
2668 isspace() after an embedded newline instead of explicitly looking for a
2669 space or a tab.
2670
267121. If all the "regular" hosts to which an address was routed had passed their
2672 expiry times, and had not reached their retry times, the address was
2673 bounced, even if fallback hosts were defined. Now Exim should go on to try
2674 the fallback hosts.
2675
267622. Increased buffer sizes in the callout code from 1024 to 4096 to match the
2677 equivalent code in the SMTP transport. Some hosts send humungous responses
2678 to HELO/EHLO, more than 1024 it seems.
2679
268023. Refactoring: code in filter.c used (void *) for "any old type" but this
2681 gives compiler warnings in some environments. I've now done it "properly",
2682 using a union.
2683
268424. The replacement for inet_ntoa() that is used with gcc on IRIX systems
2685 (because of problems with the built-in one) was declared to return uschar *
2686 instead of char *, causing compiler failure.
2687
268825. Fixed a file descriptor leak when processing alias/forward files.
2689
269026. Fixed a minor format string issue in dbfn.c.
2691
269227. Typo in exim.c: ("dmbnz" for "dbmnz").
2693
269428. If a filter file refered to $h_xxx or $message_headers, and the headers
2695 contained RFC 2047 "words", Exim's memory could, under certain conditions,
2696 become corrupted.
2697
269829. When a sender address is verified, it is cached, to save repeating the test
2699 when there is more than one recipient in a message. However, when the
2700 verification involves a callout, it is possible for different callout
2701 options to be set for different recipients. It is too complicated to keep
2702 track of this in the cache, so now Exim always runs a verification when a
2703 callout is required, relying on the callout cache for the optimization.
2704 The overhead is duplication of the address routing, but this should not be
2705 too great.
2706
270730. Fixed a bug in callout caching. If a RCPT command caused the sender address
2708 to be verified with callout=postmaster, and the main callout worked but the
2709 postmaster check failed, the verification correctly failed. However, if a
2710 subsequent RCPT command asked for sender verification *without* the
2711 postmaster check, incorrect caching caused this verification also to fail,
2712 incorrectly.
2713
271431. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
2715 it was not caching the DNS options (qualify_single, search_parents) that
2716 were used when the lookup failed. A subsequent lookup with different
2717 options therefore always gave the same answer, though there were cases
2718 where it should not have. (Example: a "domains = !$mx_any" option on a
2719 dnslookup router: the "domains" option is always processed without any
2720 widening, but the router might have qualify_single set.) Now Exim uses the
2721 cached value only when the same options are set.
2722
272332. Added John Jetmore's "exipick" utility to the distribution.
2724
272533. GnuTLS: When an attempt to start a TLS session fails for any reason other
2726 than a timeout (e.g. a certificate is required, and is not provided), an
2727 Exim server now closes the connection immediately. Previously it waited for
2728 the client to close - but if the client is SSL, it seems that they each
2729 wait for each other, leading to a delay before one of them times out.
2730
273134: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
2732 maintained 0.8.x compatibility because I don't think many are using it, and
2733 it is clearly obsolete.
2734
273535. Added TLS support for CRLs: a tls_crl global option and one for the smtp
2736 transport.
2737
273836. OpenSSL: $tls_certificate_verified was being set to 1 even if the
2739 client certificate was expired. A simple patch fixes this, though I don't
2740 understand the full logic of why the verify callback is called multiple
2741 times.
2742
274337. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
2744 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
2745 which causes problems with some clients (such as the Certicom SSL Plus
2746 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
2747 disables the coutermeasure allowing Eudora to connect."
2748
274938. Exim was not checking that a write() to a log file succeeded. This could
2750 lead to Bad Things if a log got too big, in particular if it hit a file
2751 size limit. Exim now panics and dies if it cannot write to a log file, just
2752 as it does if it cannot open a log file.
2753
275439. Modified OS/Makefile-Linux so that it now contains
2755
2756 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
2757
2758 The two -D definitions ensure that Exim is compiled with large file
2759 support, which makes it possible to handle log files that are bigger than
2760 2^31.
2761
276240. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
2763 instance) a domain was checked against a named list that involved a lookup,
2764 causing $domain_data to be set, then another domain was checked against the
2765 same list, then the first domain was re-checked, the value of $domain_data
2766 after the final check could be wrong. In particular, if the second check
2767 failed, it could be set empty. This bug probably also applied to
2768 $localpart_data.
2769
277041. The strip_trailing_dot option was not being applied to the address given
2771 with the -f command-line option.
2772
277342. The code for reading a message's header from the spool was incrementing
2774 $received_count, but never initializing it. This meant that the value was
2775 incorrect (doubled) while delivering a message in the same process in which
2776 it was received. In the most common configuration of Exim, this never
2777 happens - a fresh exec is done - but it can happen when
2778 deliver_drop_privilege is set.
2779
278043. When Exim logs an SMTP synchronization error - client data sent too soon -
2781 it now includes up to 150 characters of the unexpected data in the log
2782 line.
2783
278444. The exim_dbmbuild utility uses fixed size buffers for reading input lines
2785 and building data strings. The size of both of these buffers was 10 000
2786 bytes - far larger than anybody would *ever* want, thought I. Needless to
2787 say, somebody hit the limit. I have increased the maximum line length to
2788 20 000 and the maximum data length of concatenated lines to 100 000. I have
2789 also fixed two bugs, because there was no checking on these buffers. Tsk,
2790 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
2791 buffer is too small.
2792
279345. The exim_dbmbuild utility did not support quoted keys, as Exim does in
2794 lsearch lookups. Now it does.
2795
279646. When parsing a route_list item in a manualroute router, a fixed-length
2797 buffer was used for the list of hosts. I made this 1024 bytes long,
2798 thinking that nobody would ever have a list of hosts that long. Wrong.
2799 Somebody had a whole pile of complicated expansion conditions, and the
2800 string was silently truncated, leading to an expansion error. It turns out
2801 that it is easier to change to an unlimited length (owing to other changes
2802 that have happened since this code was originally written) than to build
2803 structure for giving a limitation error. The length of the item that
2804 expands into the list of hosts is now unlimited.
2805
280647. The lsearch lookup could not handle data where the length of text line was
2807 more than 4095 characters. Such lines were truncated, leading to shortened
2808 data being returned. It should now handle lines of any length.
2809
281048. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
2811 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
2812 ACL").
2813
281449. Cosmetic tidy to scripts like exicyclog that are generated by globally
2815 replacing strings such as BIN_DIRECTORY in a source file: the replacement
2816 no longer happens in comment lines. A list of replacements is now placed
2817 at the head of all of the source files, except those whose only change is
2818 to replace PERL_COMMAND in the very first #! line.
2819
282050. Replaced the slow insertion sort in queue.c, for sorting the list of
2821 messages on the queue, with a bottom-up merge sort, using code contributed
2822 by Michael Haardt. This should make operations like -bp somewhat faster on
2823 large queues. It won't affect queue runners, except when queue_run_in_order
2824 is set.
2825
282651. Installed eximstats 1.31 in the distribution.
2827
282852. Added support for SRV lookups to the dnslookup router.
2829
283053. If an ACL referred to $message_body or $message_body_end, the value was not
2831 reset for any messages that followed in the same SMTP session.
2832
283354. The store-handling optimization for building very long strings was not
2834 differentiating between the different store pools. I don't think this
2835 actually made any difference in practice, but I've tidied it.
2836
283755. While running the routers to verify a sender address, $sender_address
2838 was still set to the sender address. This is wrong, because when routing to
2839 send a bounce to the sender, it would be empty. Therefore, I have changed
2840 it so that, while verifying a sender address, $sender_address is set to <>.
2841 (There is no change to what happens when verifying a recipient address.)
2842
284356. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
2844 target A or AAAA records (if not already returned) without resetting the
2845 qualify_single or search_parents options of the DNS resolver. These are
2846 inappropriate in this case because the targets of MX and SRV records must
2847 be FQDNs. A broken DNS record could cause trouble if it happened to have a
2848 target that, when qualified, matched something in the local domain. These
2849 two options are now turned off when doing these lookups.
2850
285157. It seems that at least some releases of Reiserfs (which does not have the
2852 concept of a fixed number of inodes) returns zero and not -1 for the
2853 number of available inodes. This interacted badly with check_spool_inodes,
2854 which assumed that -1 was the "no such thing" setting. What I have done is
2855 to check that the total number of inodes is greater than zero before doing
2856 the test of how many are available.
2857
285858. When a "warn" ACL statement has a log_message modifier, the message is
2859 remembered, and not repeated. This is to avoid a lot of repetition when a
2860 message has many recipients that cause the same warning to be written.
2861 Howewer, Exim was preserving the list of already written lines for an
2862 entire SMTP session, which doesn't seem right. The memory is now reset if a
2863 new message is started.
2864
286559. The "rewrite" debugging flag was not showing the result of rewriting in the
2866 debugging output unless log_rewrite was also set.
2867
286860. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
2869 of (int)(handle) when we know that handle contains (void *)(-1).
2870
287161. The Exim daemon panic-logs an error return when it closes the incoming
2872 connection. However "connection reset by peer" seems to be common, and
2873 isn't really an error worthy of noting specially, so that particular error
2874 is no long logged.
2875
287662. When Exim is trying to find all the local interfaces, it used to panic and
2877 die if the ioctl to get the interface flags failed. However, it seems that
2878 on at least one OS (Solaris 9) it is possible to have an interface that is
2879 included in the list of interfaces, but for which you get a failure error
2880 for this call. This happens when the interface is not "plumbed" into a
2881 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
2882 failure of the "get flags" call assumes that the interface is down.
2883
288463. Added a ${eval10: operator, which assumes all numbers are decimal. This
2885 makes life easier for people who are doing arithmetic on fields extracted
2886 from dates, where you often get leading zeros that should not be
2887 interpreted as octal.
2888
288964. Added qualify_domain to the redirect router, to override the global
2890 setting.
2891
289265. If a pathologically long header line contained very many addresses (the
2893 report of this problem mentioned 10 000) and each of them was rewritten,
2894 Exim could use up a very large amount of memory. (It kept on making new
2895 copies of the header line as it rewrote, and never released the old ones.)
2896 At the expense of a bit more processing, the header rewriting function has
2897 been changed so that it no longer eats memory in this way.
2898
289966. The generation of the Received: header has been moved from the time that a
2900 message starts to be received, to the time that it finishes. The timestamp
2901 in the Received: header should now be very close to that of the <= log
2902 line. There are two side-effects of this change:
2903
2904 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
2905 logged header lines no longer include the local Received: line, because
2906 it has not yet been created. The same applies to a copy of the message
2907 that is returned to a non-SMTP sender when a message is rejected.
2908
2909 (b) When a filter file is tested using -bf, no additional Received: header
2910 is added to the test message. After some thought, I decided that this
2911 is a bug fix.
2912
2913 This change does not affect the value of $received_for. It is still set
2914 after address rewriting, but before local_scan() is called.
2915
291667. Installed the latest Cygwin-specific files from the Cygwin maintainer.
2917
291868. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
2919 gave an unhelpful panic error message, and a defer error. I have managed to
2920 change this behaviour so that it now rejects any supplied certificate,
2921 which seems right, as the list of acceptable certificates is empty.
2922
292369. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
2924 gave an unhelpful defer error. I have not managed to make this reject any
2925 supplied certificates, but the error message it gives is "no certificate
2926 supplied", which is not helpful.
2927
292870. exigrep's output now also includes lines that are not associated with any
2929 message, but which match the given pattern. Implemented by a patch from
2930 Martin Sluka, which also tidied up the Perl a bit.
2931
293271. Recipient callout verification, like sender verification, was using <> in
2933 the MAIL FROM command. This isn't really the right thing, since the actual
2934 sender may affect whether the remote host accepts the recipient or not. I
2935 have changed it to use the actual sender in the callout; this means that
2936 the cache record is now keyed on a recipient/sender pair, not just the
2937 recipient address. There doesn't seem to be a real danger of callout loops,
2938 since a callout by the remote host to check the sender would use <>.
2939 [SEE ABOVE: changed after hitting problems.]
2940
294172. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
2942 temporary errors. However, in the case of such a code being given after
2943 the end of a data transmission (i.e. after ".") Exim was failing to write
2944 a retry record for the message. (Yes, there was some broken host that was
2945 actually sending 8xx at this point.)
2946
294773. An unknown lookup type in a host list could cause Exim to panic-die when
2948 the list was checked. (An example that provoked this was putting <; in the
2949 middle of a list instead of at the start.) If this happened during a DATA
2950 ACL check, a -D file could be left lying around. This kind of configuration
2951 error no longer causes Exim to die; instead it causes a defer errror. The
2952 incident is still logged to the main and panic logs.
2953
295474. Buglet left over from Exim 3 conversion. The message "too many messages
2955 in one connection" was written to the rejectlog but not the mainlog, except
2956 when address rewriting (yes!) was being logged.
2957
295875. Added write_rejectlog option.
2959
296076. When a system filter was run not as root (that is, when system_filter_user
2961 was set), the values of the $n variables were not being returned to the
2962 main process; thus, they were not subsequently available in the $sn
2963 variables.
2964
296577. Added +return_path_on_delivery log selector.
2966
296778. A connection timeout was being treated differently from recipients deferred
2968 when testing hosts_max_try with a message that was older than the host's
2969 retry timeout. (The host should not be counted, thus allowing all hosts to
2970 be tried at least once before bouncing.) This may have been the cause of an
2971 occasionally reported bug whereby a message would remain on the queue
2972 longer than the retry timeout, but would be bounced if a delivery was
2973 forced. I say "may" because I never totally pinned down the problem;
2974 setting up timeout/retry tests is difficult. See also the next item.
2975
297679. The ultimate address timeout was not being applied to errors that involved
2977 a combination of host plus message (for example, a timeout on a MAIL
2978 command). When an address resolved to a number of possible hosts, and they
2979 were not all tried for each delivery (e.g. because of hosts_max_try), a
2980 message could remain on the queue longer than the retry timeout.
2981
298280. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
2983 Haardt.
2984
298581. Fixed an obscure SMTP outgoing bug which required at least the following
2986 conditions: (a) there was another message waiting for the same server;
2987 (b) the server returned 5xx to all RCPT commands in the first message so
2988 that the message was not completed; (c) the server dropped the connection
2989 or gave a negative response to the RSET that Exim sends to abort the
2990 transaction. The observed case was a dropped connection after DATA that had
2991 been sent in pipelining mode. That is, the server had advertised PIPELINING
2992 but was not implementing it correctly. The effect of the bug was incorrect
2993 behaviour, such as trying another host, and this could lead to a crash.
2994
2995
2996Exim version 4.30
2997-----------------
2998
2999 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3000 and daemon.c were passed as pointers to ints; they should have been
3001 pointers to socklen_t variables (which are typically unsigned ints).
3002
3003 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3004 fixed.
3005
3006 3. Fixed a really odd bug that affected only the testing scheme; patching a
3007 certain fixed string in the binary changed the value of another string that
3008 happened to be identical to the end of the original first string.
3009
3010 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3011 name", it returns that address as the IP address. On some operating
3012 systems (e.g. Solaris), it also passes back the IP address string as the
3013 "host name". However, on others (e.g. Linux), it passes back an empty
3014 string. Exim wasn't checking for this, and was changing the host name to an
3015 empty string, assuming it had been canonicized.
3016
3017 5. Although rare, it is permitted to have more than one PTR record for a given
3018 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3019 all the names associated with an address, because they do in Solaris.
3020 However, it seems that they do not in Linux for data that comes from the
3021 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3022 I found this out when I moved to a new Linux workstation and tried to run
3023 the Exim test suite.
3024
3025 To get round this problem I have changed the code so that it now does its
3026 own call to the DNS to look up PTR records when searching for a host name.
3027 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3028 addresses that are only in /etc/hosts are still found.
3029
3030 This behaviour is, however, controlled by an option called host_lookup_
3031 order, which defaults to "bydns:byaddr". If people want to use the other
3032 order, or indeed, just use one or the other means of lookup, they can
3033 specify it in this variable.
3034
3035 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3036 some operating systems, this comes back from gethostbyaddr() as an empty
3037 string, and this is what Exim used to test for. However, it seems that in
3038 other systems, "." is yielded. Exim now tests for this case too.
3039
3040 7. The values of check_spool_space and check_log_space are now held internally
3041 as a number of kilobytes instead of an absolute number of bytes. If a
3042 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3043 kilobyte. This means that much larger values can be stored.
3044
3045 8. Exim monitor: an attempt to get the action menu when not actually pointing
3046 at a message produces an empty menu entitled "No message selected". This
3047 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3048 no entries in it ("Shell widget menu has zero width and/or height"). So I
3049 have added a single, blank menu entry in this case.
3050
3051 9. Added ${quote_local_part.
3052
305310. MIME decoding is now applied to the contents of Subject: header lines when
3054 they are logged.
3055
305611. Now that a reference to $sender_host_address automatically causes a reverse
3057 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3058 host lookup before query-style lookups in lists that might use this
3059 variable. This has therefore been abolished, and the "net-" prefix is no
3060 longer necessary for query-style lookups.
3061
306212. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3063 have been a typo for LFLAGS, so it has been changed.
3064
306513. The install script calls Exim with "-C /dev/null" in order to find the
3066 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3067 to be output. Howeve, since Exim outputs its version number before the
3068 error, it didn't break the script. It just looked ugly. I fixed this by
3069 always allowing "-C /dev/null" if the caller is root.
3070
307114. Ignore overlarge ACL variable number when reading spool file - insurance
3072 against a later release with more variables having written the file.
3073
307415. The standard form for an IPv6 address literal was being rejected by EHLO.
3075 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3076 this, as well as the form without the "IPv6" on the front.
3077
307816. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3079 OS/Makefile-Darwin file.
3080
308117. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3082 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3083
308418. After change 4.21/52, "%ld" was used to format the contents of the $inode
3085 variable. However, some OS use ints for inodes. I've added cast to long int
3086 to get rid of the compiler warning.
3087
308819. I had forgotten to lock out "/../" in configuration file names when
3089 ALT_CONFIG_PREFIX was set.
3090
309120. Routers used for verification do not need to specify transports. However,
3092 if such a router generated a host list, and callout was configured, Exim
3093 crashed, because it could not find a port number from the (non-existent)
3094 transport. It now assumes port 25 in this circumstance.
3095
309621. Added the -t option to exigrep.
3097
309822. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3099 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3100 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3101 them is set, LOOKUP_LSEARCH is forced.
3102
310323. "exim -bV" now outputs a list of lookups that are included in the binary.
3104
310524. Added sender and host information to the "rejected by local_scan()" log
3106 line; previously there was no indication of these.
3107
310825. Added .include_if_exists.
3109
311026. Change 3.952/11 added an explicit directory sync on top of a file sync for
3111 Linux. It turns out that not all file systems support this. Apparently some
3112 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3113 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3114 not supported on the file descriptor, is now ignored when Exim is trying to
3115 sync a directory. This applies only to Linux.
3116
311727. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3118
311928. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3120 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3121 this.
3122
312329. Added support for maildirsize files from supplied patch (modified a bit).
3124
312530. The use of :fail: followed by an empty string could lead Exim to respond to
3126 sender verification failures with (e.g.):
3127
3128 550 Verification failed for <xxx>
3129 550 Sender verify failed
3130
3131 where the first response line was missing the '-' that indicates it is not
3132 the final line of the response.
3133
313431. The loop for finding the name of the user that called Exim had a hardwired
3135 limit of 10; it now uses the value of finduser_retries, which is used for
3136 all other user lookups.
3137
313832. Added $received_count variable, available in data and not_smtp ACLs, and at
3139 delivery time.
3140
314133. Exim was neglecting to zero errno before one call of strtol() when
3142 expanding a string and expecting an integer value. On some systems this
3143 resulted in spurious "integer overflow" errors. Also, it was casting the
3144 result into an int without checking.
3145
314634. Testing for a connection timeout using "timeout_connect" in the retry rules
3147 did not work. The code looks as if it has *never* worked, though it appears
3148 to have been documented since at least releast 1.62. I have made it work.
3149
315035. The "timeout_DNS" error in retry rules, also documented since at least
3151 1.62, also never worked. As it isn't clear exactly what this means, and
3152 clearly it isn't a major issue, I have abolished the feature by treating it
3153 as "timeout", and writing a warning to the main and panic logs.
3154
315536. The display of retry rules for -brt wasn't always showing the error code
3156 correctly.
3157
315837. Added new error conditions to retry rules: timeout_A, timeout_MX,
3159 timeout_connect_A, timeout_connect_MX.
3160
316138. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3162 to the empty sender.
3163
316439. The daemon was not analysing the content of -oX till after it had closed
3165 stderr and disconnected from the controlling terminal. This meant that any
3166 syntax errors were only noted on the panic log, and the return code from
3167 the command was 0. By re-arranging the code a little, I've made the
3168 decoding happen first, so such errors now appear on stderr, and the return
3169 code is 1. However, the actual setting up of the sockets still happens in
3170 the disconnected process, so errors there are still only recorded on the
3171 panic log.
3172
317340. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3174 connections (as happens on some IP stacks) was logged at start up time as
3175 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3176 it from "IPv6 and IPv4", which means that two separate sockets are being
3177 used.
3178
317941. The debug output for gethostbyname2() or getipnodebyname() failures now
3180 says whether AF_INET or AF_INET6 was passed as an argument.
3181
318242. Exiwhat output was messed up when time zones were included in log
3183 timestamps.
3184
318543. Exiwhat now gives more information about the daemon's listening ports,
3186 and whether -tls-on-connect was used.
3187
318844. The "port" option of the smtp transport is now expanded.
3189
319045. A "message" modifier in a "warn" statement in a non-message ACL was being
3191 silently ignored. Now an error message is written to the main and panic
3192 logs.
3193
319446. There's a new ACL modifier called "logwrite" which writes to a log file
3195 as soon as it is encountered.
3196
319747. Added $local_user_uid and $local_user_gid at routing time.
3198
319948. Exim crashed when trying to verify a sender address that was being
3200 rewritten to "<>".
3201
320249. Exim was recognizing only a space character after ".include". It now also
3203 recognizes a tab character.
3204
320550. Fixed several bugs in the Perl script that creates the exim.8 man page by
3206 extracting the relevant information from the specification. The man page no
3207 longer contains scrambled data for the -d option, and I've added a section
3208 at the front about calling Exim under different names.
3209
321051. Added "extra_headers" argument to the "mail" command in filter files.
3211
321252. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
3213 crash.
3214
321553. Installed eximstats 1.29.
3216
321754. Added transport_filter_timeout as a generic transport option.
3218
321955. Exim no longer adds an empty Bcc: header to messages that have no To: or
3220 Cc: header lines. This was required by RFC 822, but it not required by RFC
3221 2822.
3222
322356. Exim used to add From:, Date:, and Message-Id: header lines to any
3224 incoming messages that did not have them. Now it does so only if the
3225 message originates locally, that is, if there is no associated remote host
3226 address. When Resent- header lines are present, this applies to the Resent-
3227 lines rather than the non-Resent- lines.
3228
322957. Drop incoming SMTP connection after too many syntax or protocol errors. The
3230 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
3231
323258. Messages for configuration errors now include the name of the main
3233 configuration file - useful now that there may be more than one file in a
3234 list (.included file names were always shown).
3235
323659. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
3237 for those rare installations that do not start the daemon as root or run it
3238 setuid root. I've cut out the call to initgroups() if the daemon is not
3239 root at that time.
3240
324160. The Exim user and group can now be bound into the binary as text strings
3242 that are looked up at the start of Exim's processing.
3243
324461. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
3245
324662. Added $mailstore_basename variable.
3247
324863. Installed patch to sieve.c from Michael Haardt.
3249
325064. When Exim failed to open the panic log after failing to open the main log,
3251 the original message it was trying to log was written to stderr and debug
3252 output, but if they were not available (the usual case in production), it
3253 was lost. Now it is written to syslog before the two lines that record the
3254 failures to open the logs.
3255
325665. Users' Exim filters run in subprocesses under the user's uid. It is
3257 possible for a "deliver" command or an alias in a "personal" command to
3258 provoke an address rewrite. If logging of address rewriting is configured,
3259 this fails because the process is not running as root or exim. There may be
3260 a better way of dealing with this, but for the moment (because 4.30 needs
3261 to be released), I have disabled address rewrite logging when running a
3262 filter in a non-root, non-exim process.
3263
3264
3265Exim version 4.24
3266-----------------
3267
3268 1. The buildconfig auxiliary program wasn't quoting the value set for
3269 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
3270 not defined. This bug was masked in 4.22 by the effect that was fixed in
3271 change 4.23/1.
3272
3273 2. Some messages that were rejected after a message id was allocated were
3274 shown as "incomplete" by exigrep. It no longer does this for messages that
3275 are rejected by local_scan() or the DATA or non-SMTP ACLs.
3276
3277 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
3278 have allow_domain_literals set, the ID did not get logged in the <= line.
3279 Domain literals are now always recognized in Message-ID: header lines.
3280
3281 4. The first argument for a ${extract expansion item is the key name or field
3282 number. Leading and trailing spaces in this item were not being ignored,
3283 causing some misleading effects.
3284
3285 5. When deliver_drop_privilege was set, single queue runner processes started
3286 manually (i.e. by the command "exim -q") or by the daemon (which uses the
3287 same command in the process it spins off) were not dropping privilege.
3288
3289 6. When the daemon running as "exim" started a queue runner, it always
3290 re-executed Exim in the spun-off process. This is a waste of effort when
3291 deliver_drop_privilege is set. The new process now just calls the
3292 queue-runner function directly.
3293
3294
3295Exim version 4.23
3296-----------------
3297
3298 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
3299 HEADERS_CHARSET.
3300
3301 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
3302 ignored. Though the use of -oP was forcing the writing of a pid file, it
3303 was always written to the default place.
3304
3305 3. If the message "no IP address found for host xxxx" is generated during
3306 incoming verification, it is now followed by identification of the incoming
3307 connection (so you can more easily find what provoked it).
3308
3309 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
3310
3311 5. Added some features to "harden" Exim a bit more against certain attacks:
3312
3313 (a) There is now a build-time option called FIXED_NEVER_USERS that can
3314 be put in Local/Makefile. This is like the never_users runtime option,
3315 but it cannot be overridden. The default setting is "root".
3316
3317 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
3318 prefix string with which any file named in a -C command line option
3319 must start.
3320
3321 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
3322 is retained for -C and -D only if the caller of Exim is root. Without
3323 it, the exim user may also use -C and -D and retain privilege.
3324
3325 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
3326 command line option is disabled.
3327
3328 6. Macro names set by the -D option must start with an upper case letter, just
3329 like macro names defined in the configuration file.
3330
3331 7. Added "dereference=" facility to LDAP.
3332
3333 8. Two instances of the typo "uknown" in the source files are fixed.
3334
3335 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
3336 the Configure-Makefile script screwed up while processing it.
3337
333810. Incorporated PCRE 4.4.
3339
334011. The SMTP synchronization check was not operating right at the start of an
3341 SMTP session. For example, it could not catch a HELO sent before the client
3342 waited for the greeting. There is now a check for outstanding input at the
3343 point when the greeting is written. Because of the duplex, asynchronous
3344 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
3345 way, but not yet received, when the check is performed.
3346
334712. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
3348 on TCP/IP sockets, because this apparently causes some broken clients to
3349 timeout.
3350
335113. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
3352 unchanged) from the Cygwin maintainer.
3353
335414. The code for -bV that shows what is in the binary showed "mbx" when maildir
3355 was supported instead of testing for mbx. Effectively a typo.
3356
335715. The spa authenticator server code was not checking that the input it
3358 received was valid base64.
3359
336016. The debug output line for the "set" modifier in ACLs was not showing the
3361 name of the variable that was being set.
3362
336317. Code tidy: the variable type "vtype_string" was never used. Removed it.
3364
336518. Previously, a reference to $sender_host_name did not cause a DNS reverse
3366 lookup on its own. Something else was needed to trigger the lookup. For
3367 example, a match in host_lookup or the need for a host name in a host list.
3368 Now, if $sender_host_name is referenced and the host name has not yet been
3369 looked up, a lookup is performed. If the lookup fails, the variable remains
3370 empty, and $host_lookup_failed is set to "1".
3371
337219. Added "eqi" as a case-independent comparison operator.
3373
337420. The saslauthd authentication condition could segfault if neither service
3375 nor realm was specified.
3376
337721. If an overflowing value such as "2048M" was set for message_size_limit, the
3378 error message that was logged was misleading, and incoming SMTP
3379 connections were dropped. The message is now more accurate, and temporary
3380 errors are given to SMTP connections.
3381
338222. In some error situations (such as 21 above) Exim rejects all SMTP commands
3383 (except RSET) with a 421 error, until QUIT is received. However, it was
3384 failing to send a response to QUIT.
3385
338623. The HELO ACL was being run before the code for helo_try_verify_hosts,
3387 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
3388 ACL is now run after the helo_try_verify_hosts code.
3389
339024. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
3391 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
3392 case-independent, so other case variants are also recognized). Apparently
3393 some systems use these upper case variants.
3394
339525. If more than two messages were waiting for the same host, and a transport
3396 filter was specified for the transport, Exim sent two messages over the
3397 same TCP/IP connection, and then failed with "socket operation on non-
3398 socket" when it tried to send the third.
3399
340026. Added Exim::debug_write and Exim::log_write for embedded Perl use.
3401
340227. The extern definition of crypt16() in expand.c was not being excluded when
3403 the OS had its own crypt16() function.
3404
340528. Added bounce_return_body as a new option, and bounce_return_size_limit
3406 as a preferred synonym for return_size_limit, both as an option and as an
3407 expansion variable.
3408
340929. Added LIBS=-liconv to OS/Makefile-OSF1.
3410
341130. Changed the default configuration ACL to relax the local part checking rule
3412 for addresses that are not in any local domains. For these addresses,
3413 slashes and pipe symbols are allowed within local parts, but the sequence
3414 /../ is explicitly forbidden.
3415
341631. SPA server authentication was not clearing the challenge buffer before
3417 using it.
3418
341932. log_message in a "warn" ACL statement was writing to the reject log as
3420 well as to the main log, which contradicts the documentation and doesn't
3421 seem right (because no rejection is happening). So I have stopped it.
3422
342333. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
3424 However, I am unable to do any testing of this.
3425
342634. Fixed an infelicity in the appendfile transport. When checking directories
3427 for a mailbox, to see if any needed to be created, it was accidentally
3428 using path names with one or more superfluous leading slashes; tracing
3429 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
3430
343135. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
3432 contents are added to the log line that is written for every discarded
3433 recipient. (Previously a log_message setting was ignored.)
3434
343536. The ${quote: operator now quotes the string if it is empty.
3436
343737. The install script runs exim in order to find its version number. If for
3438 some reason other than non-existence or emptiness, which it checks, it
3439 could not run './exim', it was installing it with an empty version number,
3440 i.e. as "exim-". This error state is now caught, and the installation is
3441 aborted.
3442
344338. An argument was missing from the function that creates an error message
3444 when Exim fails to connect to the socket for saslauthd authentication.
3445 This could cause Exim to crash, or give a corrupted message.
3446
344739. Added isip, isip4, and isip6 to ${if conditions.
3448
344940. The ACL variables $acl_xx are now saved with the message, and can be
3450 accessed later in routers, transports, and filters.
3451
345241. The new lookup type nwildlsearch is like wildlsearch, except that the key
3453 strings in the file are not string-expanded.
3454
345542. If a MAIL command specified a SIZE value that was too large to fit into an
3456 int variable, the check against message_size_limit failed. Such values are
3457 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
3458 day this will have to be increased, but I don't think I want to be around
3459 when emails are that large.
3460
3461
3462
3463Exim version 4.22
3464-----------------
3465
3466 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
3467 iconv() is not standard in FreeBSD.
3468
3469 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with
3470 IPv6 enabled. The observed symptom was a segmentation fault on return from
3471 the function os_common_find_running_interfaces() in src/os.c.
3472
3473 3. In the check_special_case() function in daemon.c I had used "errno" as an
3474 argument name, which causes warnings on some systems. This was basically a
3475 typo, since it was named "eno" in the comments!
3476
3477 4. The code that waits for the clock to tick (at a resolution of some fraction
3478 of a second) so as to ensure message-id uniqueness was always waiting for
3479 at least one whole tick, when it could have waited for less. [This is
3480 almost certainly not relevant at current processor speeds, where it is
3481 unlikely to ever wait at all. But we try to future-proof.]
3482
3483 5. The function that sleeps for a time interval that includes fractions of a
3484 second contained a race. It did not block SIGALRM between setting the
3485 timer, and suspending (a couple of lines later). If the interval was short
3486 and the sigsuspend() was delayed until after it had expired, the suspension
3487 never ended. On busy systems this could lead to processes getting stuck for
3488 ever.
3489
3490 6. Some uncommon configurations may cause a lookup to happen in a queue runner
3491 process, before it forks any delivery processes. The open lookup caching
3492 mechanism meant that the open file or database connection was passed into
3493 the delivery process. The problem was that delivery processes always tidy
3494 up cached lookup data. This could cause a problem for the next delivery
3495 process started by the queue runner, because the external queue runner
3496 process does not know about the closure. So the next delivery process
3497 still has data in the lookup cache. In the case of a file lookup, there was
3498 no problem because closing a file descriptor in a subprocess doesn't affect
3499 the parent. However, if the lookup was caching a connection to a database,
3500 the connection was closed, and the second delivery process was likely to
3501 see errors such as "PGSQL: query failed: server closed the connection
3502 unexpectedly". The problem has been fixed by closing all cached lookups
3503 in a queue runner before running a delivery process.
3504
3505 7. Compiler warning on Linux for the second argument of iconv(), which doesn't
3506 seem to have the "const" qualifier which it has on other OS. I've
3507 parameterised it.
3508
3509 8. Change 4.21/2 was too strict. It is only if there are two authenticators
3510 *of the same type* (client or server) with the same public name that an
3511 error should be diagnosed.
3512
3513 9. When Exim looked up a host name for an IP address, but failed to find the
3514 original IP address when looking up the host name (a safety check), it
3515 output the message "<ip address> does not match any IP for NULL", which was
3516 confusing, to say the least. The bug was that the host name should have
3517 appeared instead of "NULL".
3518
351910. Since release 3.03, if Exim is called by a uid other than root or the Exim
3520 user that is built into the binary, and the -C or -D options is used, root
3521 privilege is dropped before the configuration file is read. In addition,
3522 logging is switched to stderr instead of the normal log files. If the
3523 configuration then re-defines the Exim user, the unprivileged environment
3524 is probably not what is expected, so Exim logs a panic warning message (but
3525 proceeds).
3526
3527 However, if deliver_drop_privilege is set, the unprivileged state may well
3528 be exactly what is intended, so the warning has been cut out in that case,
3529 and Exim is allowed to try to write to its normal log files.
3530
3531
3532Exim version 4.21
3533-----------------
3534
3535 1. smtp_return_error_details was not giving details for temporary sender
3536 or receiver verification errors.
3537
3538 2. Diagnose a configuration error if two authenticators have the same public
3539 name.
3540
3541 3. Exim used not to create the message log file for a message until the first
3542 delivery attempt. This could be confusing when incoming messages were held
3543 for policy or load reasons. The message log file is now created at the time
3544 the message is received, and an initial "Received" line is written to it.
3545
3546 4. The automatically generated man page for command line options had a minor
3547 bug that caused no ill effects; however, a more serious problem was that
3548 the procedure for building the man page automatically didn't always
3549 operate. Consequently, release 4.20 contains an out-of-date version. This
3550 shouldn't happen again.
3551
3552 5. When building Exim with embedded Perl support, the script that builds the
3553 Makefile was calling 'perl' to find its compile-time parameters, ignoring
3554 any setting of PERL_COMMAND in Local/Makefile. This is now fixed.
3555
3556 6. The freeze_tell option was not being used for messages that were frozen on
3557 arrival, either by an ACL or by local_scan().
3558
3559 7. Added the smtp_incomplete_transaction log selector.
3560
3561 8. After STARTTLS, Exim was not forgetting that it had advertised AUTH, so it
3562 was accepting AUTH without a new EHLO.
3563
3564 9. Added tls_remember_esmtp to cope with YAEB. This allows AUTH and other
3565 ESMTP extensions after STARTTLS without a new EHLO, in contravention of the
3566 RFC.
3567
356810. Logging of TCP/IP connections (when configured) now happens in the main
3569 daemon process instead of the child process, so that the TCP/IP connection
3570 count is more accurate (but it can never be perfect).
3571
357211. The use of "drop" in a nested ACL was not being handled correctly in the
3573 outer ACL. Now, if condition failure induced by the nested "drop" causes
3574 the outer ACL verb to deny access ("accept" or "discard" after "endpass",
3575 or "require"), the connection is dropped.
3576
357712. Similarly, "discard" in a nested ACL wasn't being handled. A nested ACL
3578 that yield "discard" can now be used with an "accept" or a "discard" verb,
3579 but an error is generated for any others (because I can't see a useful way
3580 to define what should happen).
3581
358213. When an ACL is read dynamically from a file (or anywhere else), the lines
3583 are now processed in the same way as lines in the Exim configuration file.
3584 In particular, continuation lines are supported.
3585
358614. Added the "dnslists = a.b.c!=n.n.n.n" feature.
3587
358815. Added -ti meaning -t -i.
3589
359016. Check for letters, digits, hyphens, and dots in the names of dnslist
3591 domains, and warn by logging if others are found.
3592
359317. At least on BSD, alignment is not guarenteed for the array of ifreq's
3594 returned from GIFCONF when Exim is trying to find the list of interfaces on
3595 a host. The code in os.c has been modified to copy each ifreq to an aligned
3596 structure in all cases.
3597
3598 Also, in some cases, the returned ifreq's were being copied to a 'struct
3599 ifreq' on the stack, which was subsequently passed to host_ntoa(). That
3600 means the last couple of bytes of an IPv6 address could be chopped if the
3601 ifreq contained only a normal sockaddr (14 bytes storage).
3602
360318. Named domain lists were not supported in the hosts_treat_as_local option.
3604 An entry such as +xxxx was not recognized, and was treated as a literal
3605 domain name.
3606
360719. Ensure that header lines added by a DATA ACL are included in the reject log
3608 if the ACL subsequently rejects the message.
3609
361020. Upgrade the cramtest.pl utility script to use Digest::MD5 instead of just
3611 MD5 (which is deprecated).
3612
361321. When testing a filter file using -bf, Exim was writing a message when it
3614 took the sender from a "From " line in the message, but it was not doing so
3615 when it took $return_path from a Return-Path: header line. It now does.
3616
361722. If the contents of a "message" modifier for a "warn" ACL verb do not begin
3618 with a valid header line field name (a series of printing characters
3619 terminated by a colon, Exim now inserts X-ACL-Warn: at the beginning.
3620
362123. Changed "disc" in the source to "disk" to conform to the documentation and
3622 the book and for uniformity.
3623
362424. Ignore Sendmail's -Ooption=value command line item.
3625
362625. When execve() failed while trying to run a command in a pipe transport,
3627 Exim was returning EX_UNAVAILBLE (69) from the subprocess. However, this
3628 could be confused with a return value of 69 from the command itself. This
3629 has been changed to 127, the value the shell returns if it is asked to run
3630 a non-existent command. The wording for the related log line suggests a
3631 non-existent command as the problem.
3632
363326. If received_header_text expands to an empty string, do not add a Received:
3634 header line to the message. (Well, it adds a token one on the spool, but
3635 marks it "old" so that it doesn't get used or transmitted.)
3636
363727. Installed eximstats 1.28 (addition of -nt option).
3638
363928. There was no check for failure on the call to getsockname() in the daemon
3640 code. This can fail if there is a shortage of resources on the system, with
3641 ENOMEM, for example. A temporary error is now given on failure.
3642
364329. Contrary to the C standard, it seems that in some environments, the
3644 equivalent of setlocale(LC_ALL, "C") is not obeyed at the start of a C
3645 program. Exim now does this explicitly; it affects the formatting of
3646 timestamps using strftime().
3647
364830. If exiqsumm was given junk data, it threw up some uninitialized variable
3649 complaints. I've now initialized all the variables, to avoid this.
3650
365132. Header lines added by a system filter were not being "seen" during
3652 transport-time rewrites.
3653
365433. The info_callback() function passed to OpenSSL is set up with type void
3655 (*)(SSL *, int, int), as described somewhere. However, when calling the
3656 function (actually a macro) that sets it up, the type void(*)() is
3657 expected. I've put in a cast to prevent warnings from picky compilers.
3658
365934. If a DNS black list lookup found a CNAME record, but there were no A
3660 records associated with the domain it pointed at, Exim crashed.
3661
366235. If a DNS black list lookup returned more than one A record, Exim ignored
3663 all but the first. It now scans all returned addresses if a particular IP
3664 value is being sought. In this situation, the contents of the
3665 $dnslist_value variable are a list of all the addresses, separated by a
3666 comma and a space.
3667
366836. Tightened up the rules for host name lookups using reverse DNS. Exim used
3669 to accept a host name and all its aliases if the forward lookup for any of
3670 them yielded the IP address of the incoming connection. Now it accepts only
3671 those names whose forward lookup yields the correct IP address. Any other