Fix address sorting untidiness for the test suite.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
f3d7df6c 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.334 2006/03/17 16:51:45 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
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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
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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
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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
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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
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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
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194PH/38 Panic-die if .include specifies a non-absolute path.
195
3cd34f13
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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
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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
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228PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
229
4730f942
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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
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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
214e2000 329
5de37277
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330Exim version 4.60
331-----------------
332
cc38ddbf
PH
333PH/01 Two changes to the default runtime configuration:
334
335 (1) Move the checks for relay_from_hosts and authenticated clients from
336 after to before the (commented out) DNS black list checks.
337
338 (2) Add control=submission to the relay_from_hosts and authenticated
339 clients checks, on the grounds that messages accepted by these
340 statements are most likely to be submissions.
5de37277 341
72fdd6ae
PH
342PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
343
344 (1) Generate an error if the third argument for the ${prvs expansion is
345 not a single digit.
346
347 (2) Treat a missing third argument of ${prvscheck as if it were an empty
348 string.
349
350 (3) Reset the variables that are obtained from the first argument of
351 ${prvscheck and used in the second argument before leaving the code,
352 because their memory is reclaimed, so using them afterwards may do
353 silly things.
354
355 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
356 one (it's much easier than Tom thought :-).
357
358 (5) Because of (4), we can now allow for the use of $prvscheck_result
359 inside the third argument.
cb9328de 360
cb741023
PH
361PH/03 For some reason, the default setting of PATH when running a command from
362 a pipe transport was just "/usr/bin". I have changed it to
363 "/bin:/usr/bin".
364
f174f16e
PH
365PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
366 anything to be listed in the output from -bV.
b2f5a032 367
c25242d7
PH
368PH/05 When a filter generated an autoreply, the entire To: header line was
369 quoted in the delivery log line, like this:
370
371 => >A.N.Other <ano@some.domain> <original@ddress> ...
372
373 This has been changed so that it extracts the operative address. There
374 may be more than one such address. If so, they are comma-separated, like
375 this:
376
377 => >ano@some.domain,ona@other.domain <original@ddress> ...
378
82c19f95
PH
379PH/06 When a client host used a correct literal IP address in a HELO or EHLO
380 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
381 not being looked up in the rDNS to get a host name, Exim was showing the
382 IP address twice in Received: lines, even though the IP addresses were
383 identical. For example:
384
385 Received: from [1.2.3.4] (helo=[1.2.3.4])
386
387 However, if the real host name was known, it was omitting the HELO data
388 if it matched the actual IP address. This has been tidied up so that it
389 doesn't show the same IP address twice.
390
d7ffbc12
PH
391PH/07 When both +timestamp and +memory debugging was on, the value given by
392 $tod_xxx expansions could be wrong, because the tod_stamp() function was
393 called by the debug printing, thereby overwriting the timestamp buffer.
394 Debugging no longer uses the tod_stamp() function when +timestamp is set.
395
9f526266
PH
396PH/08 When the original message was included in an autoreply transport, it
397 always said "this is a copy of the message, including all the headers",
398 even if body_only or headers_only was set. It now gives an appropriate
399 message.
400
87fcc8b9
PH
401PH/09 Applied a patch from the Sieve maintainer which:
402
403 o fixes some comments
404 o adds the (disabled) notify extension core
405 o adds some debug output for the result of if/elsif tests
406 o points to the current vacation draft in the documentation
407 and documents the missing references header update
408
409 and most important:
410
411 o fixes a bug in processing the envelope test (when testing
412 multiple envelope elements, the last element determinted the
413 result)
414
456682f5
PH
415PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
416 Electronic Mail") by including:
417
418 Auto-submitted: auto-generated
419
420 in the messages that it generates (bounce messages and others, such as
421 warnings). In the case of bounce messages for non-SMTP mesages, there was
422 also a typo: it was using "Auto_submitted" (underscore instead of
423 hyphen). Since every message generated by Exim is necessarily in response
424 to another message, thes have all been changed to:
425
426 Auto-Submitted: auto-replied
427
428 in accordance with these statements in the RFC:
429
430 The auto-replied keyword:
431
432 - SHOULD be used on messages sent in direct response to another
433 message by an automatic process,
434
435 - MUST NOT be used on manually-generated messages,
436
437 - MAY be used on Delivery Status Notifications (DSNs) and Message
438 Disposition Notifications (MDNs),
439
440 - MUST NOT be used on messages generated by automatic or periodic
441 processes, except for messages which are automatic responses to
442 other messages.
443
3e46c1aa
PH
444PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
445 to the default Received: header definition.
456682f5 446
49826d12
PH
447PH/12 Added log selector acl_warn_skipped (default on).
448
eba0c039
PH
449PH/13 After a successful wildlsearch lookup, discard the values of numeric
450 variables because (a) they are in the wrong storage pool and (b) even if
451 they were copied, it wouldn't work properly because of the caching.
452
a0d6ba8a
PH
453PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
454 checking when decoding. Apparently there are clients that generate
455 overlong encoded strings. Why am I not surprised?
456
f0917727
PH
457PH/15 If the first argument of "${if match_address" was not empty, but did not
458 contain an "@" character, Exim crashed. Now it writes a panic log message
459 and treats the condition as false.
460
096fee00
PH
461PH/16 In autoreply, treat an empty string for "once" the same as unset.
462
024bd3c2
PH
463PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
464 extension "envelope-auth". The code is finished and in agreement with
465 other implementations, but there is no documentation so far and in fact,
466 nobody wrote the draft yet. This extension is currently #undef'ed, thus
467 not changing the active code.
468
469 Print executed "if" and "elsif" statements when debugging is used. This
470 helps a great deal to understand what a filter does.
471
472 Document more things not specified clearly in RFC3028. I had all this
473 sorted out, when out of a sudden new issues came to my mind. Oops."
474
df199fec
PH
475PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
476 (Bugzilla #53).
477
d27f1df3
PH
478PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
479 canonical form (as documented). However, after a host name lookup from
480 the IP address, check_host() was doing a simple string comparison with
481 addresses acquired from the DNS when checking that the found name did
482 have the original IP as one of its addresses. Since any found IPv6
483 addresses are likely to be in abbreviated form, the comparison could
484 fail. Luckily, there already exists a function for doing the comparison
485 by converting both addresses to binary, so now that is used instead of
486 the text comparison.
487
96776534
PH
488PH/20 There was another similar case to PH/19, when a complete host name was
489 given in a host list; looking up its IP address could give an abbreviated
490 form, whereas the current host's name might or might not be abbreviated.
491 The same fix has been applied.
492
5de37277 493
9a799bc0
PH
494Exim version 4.54
495-----------------
496
497PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
498 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
499 It now does.
500
99a4b039
PH
501PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
502 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
503
504PH/03 Typo: missing ".o" in src/pcre/Makefile.
505
4b233853
PH
506PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
507 header line, restrict the check to what is listed in RFCs 2369 and 2929.
508 Also, for "Auto-Submitted", treat anything other than "no" as
509 non-personal, in accordance with RFC 3834. (Previously it treated
510 anything starting "auto-" as non-personal.)
511
8857ccfd
PH
512TF/01 The control=submission/name=... option had a problem with syntax
513 errors if the name included a slash character. The /name= option
514 now slurps the rest of the string, so it can include any characters
515 but it must come last in the list of options (after /sender_retain
516 or /domain=).
517
433a2980
PH
518PH/05 Some modifications to the interface to the fake nameserver for the new
519 testing suite.
520
3e46c1aa 521
9a799bc0 522
e3a311ba
TK
523Exim version 4.53
524-----------------
525
526TK/01 Added the "success_on_redirect" address verification option. See
527 NewStuff for rationale and an example.
528
13b685f9
PH
529PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
530
395ff96d
PH
531PH/02 Patch to exigrep to allow it to work on syslog lines.
532
5b68f6e4
PH
533PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
534 fread() to skip over the body file's header line, because in Cygwin the
535 header line is locked and is inaccessible.
536
1ab52c69
PH
537PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
538 co-exist for some time) to make it clear that it is the Exim ID that is
539 referenced, not the Message-ID: header line.
540
b07e6aa3
PH
541PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
542 string_format() function, because snprintf() does not exist on all
543 operating systems.
544
254e032f
PH
545PH/06 The use of forbid_filter_existstest now also locks out the use of the
546 ${stat: expansion item.
547
3af76a81
PH
548PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
549 protocol synchronization error", to keep the pedants happy.
550
2548ba04
PH
551PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
552 well as for IRIX systems, when gcc is being used. See the host.c source
553 file for comments.
554
b6c6011d
PH
555PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
556
cf39cf57
PH
557PH/10 Named domain lists were not working if used in a queue_smtp_domains
558 setting.
559
f1513293
PH
560PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
561 transport and to the smtp transport in LMTP mode.
562
727549a4
PH
563TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
564
af46795e
PH
565PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
566 run a filter in a subprocess. This could lead to confusion in subsequent
567 lookups in the parent process. There should also be a search_tidyup() at
568 the end of the subprocess.
569
d7b47fd0
PH
570PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
571 only if the host matched helo_try_verify_hosts, which caused the
572 verification to occur when the EHLO/HELO command was issued. The ACL just
573 tested the remembered result. Now, if a previous verification attempt has
574 not happened, "verify = helo" does it there and then.
575
ee744174
JJ
576JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
577
b582ab87
PH
578TK/03 Fix log output including CR from clamd.
579
41a13e0a
PH
580PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
581 exist provoked a memory error which could cause a segfault.
582
f625cc5a
PH
583PH/15 Installed PCRE 6.2
584
585PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
586
21f7af35
PH
587PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
588 of the problem. Specifically, suggested +O2 rather than +O1 for the
589 HP-UX compiler.
590
31480e42
PH
591PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
592
2d280592
PH
593PH/20 If a delivery was routed to a non-standard port by means of an SRV
594 record, the port was not correctly logged when the outgoing_port log
595 selector was set (it logged the transort's default port).
596
7cd1141b
PH
597PH/21 Added support for host-specific ports to manualroute, queryprogram,
598 fallback_hosts, and "hosts" in the smtp transport.
599
600PH/22 If the log selector "outgoing_port" is set, the port is now also given on
601 host errors such as "Connection refused".
602
750af86e
PH
603PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
604 authentication with radiusclient 0.4.9:
605
606 - Error returned from rc_read_config was caught wrongly
607 - Username/password not passed on to radius server due to wrong length.
608
609 The presumption is that some radiusclient API changes for 4.51/PH/17
610 were not taken care of correctly. The code is still untested by me (my
611 Linux distribution still has 0.3.2 of radiusclient), but it was
612 contributed by a Radius user.
613
614PH/24 When doing a callout, the value of $domain wasn't set correctly when
615 expanding the "port" option of the smtp transport.
616
4304270b
TK
617TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
618 while reading a MIME header. Thanks to Tom Hughes for a patch.
619
750af86e
PH
620PH/24 Include config.h inside local_scan.h so that configuration settings are
621 available.
622
64ffc24f
PH
623PH/25 Make $smtp_command_argument available after all SMTP commands. This means
624 that in an ACL for RCPT (for example), you can examine exactly what was
625 received.
626
5dd9625b
PH
627PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
628 commands, but it was not correctly comparing the address with the actual
629 client host address. Thus, it would show the EHLO address in Received:
630 header lines when this was not necessary.
631
5591031b
PH
632PH/27 Added the % operator to ${eval:}.
633
ba18e66a
PH
634PH/28 Exim tries to create and chdir to its spool directory when it starts;
635 it should be ignoring failures (because with -C, for example, it has lost
636 privilege). It wasn't ignoring creation failures other than "already
637 exists".
638
9cec981f
PH
639PH/29 Added "crypteq" to the list of supported features that Exim outputs when
640 -bV or -d is used.
641
aa2b5c79
PH
642PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
643 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
644 too many continuations, the temporary file was not being removed, and the
645 return code was incorrect.
aa2b5c79 646
48a53b7f
PH
647PH/31 Missing "BOOL" in function definition in filtertest.c.
648
1c59d63b
PH
649PH/32 Applied Sieve patches from the maintainer.
650
671012da
TK
651TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
652
1509d3a8
PH
653PH/33 Added "verify = not_blind".
654
655PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
656 Local/Makefile (with some defaults set). These are used in built scripts
657 such as exicyclog, but they have never been used in the exim_install
658 script (though there are many overriding facilities there). I have
659 arranged that the exim_install script now takes note of these two
660 settings.
661
662PH/35 Installed configuration files for Dragonfly.
663
2fe1a124
PH
664PH/36 When a locally submitted message by a trusted user did not contain a
665 From: header, and the sender address was obtained from -f or from an SMTP
666 MAIL command, and the trusted user did not use -F to supply a sender
667 name, $originator_name was incorrectly used when constructing a From:
668 header. Furthermore, $originator_name was used for submission mode
669 messages from external hosts without From: headers in a similar way,
670 which is clearly wrong.
671
8800895a
PH
672PH/37 Added control=suppress_local_fixups.
673
ccfdb010
PH
674PH/38 When log_selector = +received_sender was set, and the addition of the
675 sender made the log line's construction buffer exactly full, or one byte
676 less than full, an overflow happened when the terminating "\n" was
677 subsequently added.
678
1130bfb0
PH
679PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
680 when the result of a list match is failure because a DNS lookup failed.
681
ebcb507f
PH
682PH/40 RM_COMMAND is now used in the building process.
683
c35e155c
PH
684PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
685 the "build-* directories that it finds.
686
95d1f782
PH
687PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
688 address in a domain literal was a prefix of an interface address.
689
fd6de02e
PH
690PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
691 when verifying a sender address, unless rewrite_headers is false.
692
58de37c5
PH
693PH/44 Wrote a long comment about why errors_to addresses are verified as
694 recipients, not senders.
695
261cf466
TF
696TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
697 the ratelimit ACL was added.
698
3ee512ff
PH
699PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
700
e08c430f
PH
701PH/46 Added extra information about PostgreSQL errors to the error string.
702
bef5a11f
PH
703PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
704 avoiding the need to install special zones in a real server. This is
705 backwards compatible; if it can't find the fake resolver, it drops back.
706 Thus, both old and new test suites can be run.
707
7546de58
TF
708TF/02 Added util/ratelimit.pl
709
e5d5a95f
TF
710TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
711 clock is set back in time.
712
2e88a017
TF
713TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
714 Candler <B.Candler@pobox.com>.
715
a5f65aa4
TF
716TF/05 The fix for PH/43 was not completely correct; widen_domains is always
717 OK for addresses that are the result of redirections.
718
e7726cbf
PH
719PH/48 A number of further additions for the benefit of the new test suite,
720 including a fake gethostbyname() that interfaces to the fake DNS resolver
721 (see PH/47 above).
722
a7fdad5b
TF
723TF/06 The fix for widen_domains has also been applied to qualify_single and
724 search_parents which are the other dnslookup options that can cause
725 header rewrites.
726
6af56900
PH
727PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
728 type ("H").
729
0925ede6
PH
730PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
731
66afa403
TF
732TF/07 Exim produced the error message "an SRV record indicated no SMTP
733 service" if it encountered an MX record with an empty target hostname.
734 The message is now "an MX or SRV record indicated no SMTP service".
735
0154e85a
TF
736TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
737 if the DNS of the sending site is misconfigured. This is quite a
738 common situation. This change restores the behaviour of treating a
739 helo verification defer as a failure.
740
16f12c76
PH
741PH/51 If self=fail was set on a router, the bounce message did not include the
742 actual error message.
743
bbe902f0 744
e5a9dba6
PH
745Exim version 4.52
746-----------------
747
748TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
749
22c3b60b
PH
750PH/01 When a transport filter timed out in a pipe delivery, and the pipe
751 command itself ended in error, the underlying message about the transport
752 filter timeout was being overwritten with the pipe command error. Now the
753 underlying error message should be appended to the second error message.
754
06a9b4b5
PH
755TK/01 Fix poll() being unavailable on Mac OSX 10.2.
756
c1ac6996
PH
757PH/02 Reduce the amount of output that "make" produces by default. Full output
758 can still be requested.
759
9c7a242c
PH
760PH/03 The warning log line about a condition test deferring for a "warn" verb
761 was being output only once per connection, rather than after each
762 occurrence (because it was using the same function as for successful
763 "warn" verbs). This seems wrong, so I have changed it.
764
87ba3f5f
PH
765TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
766 it should not have, which might have caused a crash in the right
767 circumstances, but probably never did.
768
769PH/04 Installed a modified version of Tony Finch's patch to make submission
770 mode fix the return path as well as the Sender: header line, and to
771 add a /name= option so that you can make the user's friendly name appear
772 in the header line.
773
29aba418
TF
774TF/03 Added the control = fakedefer ACL modifier.
775
fe0dab11
TF
776TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
777 Mark Lowes for thorough testing.
870f6ba8 778
11d337a4
TK
779TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
780
781TK/03 Merged latest SRS patch from Miles Wilton.
782
415c8f3b
PH
783PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
784 with the definition in sysexits.h (which is #included earlier).
785 Fortunately, Exim does not actually use EX_OK. The code used to try to
786 preserve the sysexits.h value, by assumimg that macro definitions were
787 scanned for macro replacements. I have been disabused of this notion,
788 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 789
958541e9
PH
790PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
791 in the smtp transport. When a block could not be written in a single
792 write() function, the timeout was being re-applied to each part-write.
793 This seems wrong - if the receiver was accepting one byte at a time it
794 would take for ever. The timeout is now adjusted when this happens. It
795 doesn't have to be particularly precise.
796
c206415f
TK
797TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
798 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
799
2a4be8f9
PH
800PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
801 without a domain if the check to <postmaster@domain> fails.
802
1cba11c5
SC
803SC/01 Eximstats: added -xls and the ability to specify output files
804 (patch written by Frank Heydlauf).
805
806SC/02 Eximstats: use FileHandles for outputing results.
807
808SC/03 Eximstats: allow any combination of xls, txt, and html output.
809
810SC/04 Eximstats: fixed display of large numbers with -nvr option
811
812SC/05 Eximstats: fixed merging of reports with empty tables.
813
814SC/06 Eximstats: added the -include_original_destination flag
815
816SC/07 Eximstats: removed tabs and trailing whitespace.
817
1005d00e
TK
818TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
819
820TK/06 MBOX spool code: Add real "From " MBOX separator line
821 so the .eml file is really in mbox format (even though
822 most programs do not really care). Patch from Alex Miller.
823
824TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
825 The latter is generated from $received_to and is only set if the
826 message has one envelope recipient. SA can use these headers,
827 obviously out-of-the-box. Patch from Alex Miller.
828
9b4768fa
PH
829PH/08 The ${def test on a variable was returning false if the variable's
830 value was "0", contrary to what the specification has always said!
831 The result should be true unless the variable is empty.
832
833PH/09 The syntax error of a character other than { following "${if
834 def:variable_name" (after optional whitespace) was not being diagnosed.
835 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
836 accidental colon was present, for example, could give incorrect results.
837
0d7eb84a
PH
838PH/10 Tidied the code in a number of places where the st_size field of a stat()
839 result is used (not including appendfile, where other changes are about
840 to be made).
841
842PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
843 This involved changing a lot of size variables from int to off_t. It
844 should work with maildirs and everything.
845
40727bee
TK
846TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
847 spamd dying while we are connected to it.
848
554d2369
TF
849TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
850 <jgh@wizmail.org>
851
1f922db1
PH
852PH/12 Applied Alex Kiernan's patch for the API change for the error callback
853 function for BDB 4.3.
854
ef213c3b
PH
855PH/13 Changed auto_thaw such that it does not apply to bounce messages.
856
8ac170f3
PH
857PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
858 the sources for PCRE have been re-arranged and more files are now
859 involved.
860
b1c749bb
PH
861PH/15 The code I had for printing potentially long long variables in PH/11
862 above was not the best (it lost precision). The length of off_t variables
863 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
864 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
865 to be "long long int" or "long int". This is needed for the internal
866 formatting function string_vformat().
b1c749bb 867
4aac9b49
PH
868PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
869 the configuration file to be ":syslog", then the script "guesses" where
870 the logs files are, rather than using the compiled in default. In our
871 case the guess is not the same as the compiled default, so the script
872 suddenly stopped working when I started to use syslog. The patch checks
873 to see if log_file_path is "". If so, it attempts to read it from exim
874 with no configuration file to get the compiled in version, before it
875 falls back to the previous guessing code."
876
294520c8
TK
877TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
878 implementing BATV in an Exim configuration. See NewStuff for the gory
879 details.
880
5bd022fe
PH
881PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
882 Makefile that are specific to HP-UX.
883
90e9ce59
PH
884PH/18 If the "use_postmaster" option was set for a recipient callout together
885 with the "random" option, the postmaster address was used as the MAIL
886 FROM address for the random test, but not for the subsequent recipient
887 test. It is now used for both.
888
5ea81592
PH
889PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
890 patch removes a few documentation additions to RFC 3028, because the
891 latest draft now contains them. It adds the new en;ascii-case comparator
892 and a new error check for 8bit text in MIME parts. Comparator and
893 require names are now matched exactly. I enabled the subaddress
894 extension, but it is not well tested yet (read: it works for me)."
895
c6c2dc1d
PH
896PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
897 rework some of the code of TK/09 above to avoid the hardwired use of
898 "%lld" and "long long". Replaced the call to snprintf() with a call to
899 string_vformat().
900
fffffe4c
PH
901PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
902 records point to non-existent hosts", "retry timeout exceeded", and
903 "retry time not reached for any host after a long failure period".
ca02eafb 904
9a26b6b2
PH
905PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
906 experimental DomainKeys support:
907
908 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
909 (2) On an error such as an illegally used "control", the wrong name for
910 the control was given.
911
912 These problems did NOT occur unless DomainKeys support was compiled.
913
4aee0225
PH
914PH/23 Added daemon_startup_retries and daemon_startup_sleep.
915
32d668a5
PH
916PH/24 Added ${if match_ip condition.
917
8187c3f3
PH
918PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
919 databases so that it will be absolutely obvious if a crash occurs in the
920 DB library. This is a regular occurrence (often caused by mis-matched
921 db.h files).
922
ff790e47 923PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
924 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
925 picked up on a user's system that detects such things. There doesn't seem
926 to be a gcc warning option for this - only an attribute that has to be
927 put on the function's prototype. It seems that in Fedora Core 4 they have
928 set this on a number of new functions. No doubt there will be more in due
929 course.
ff790e47 930
5417f6d1
PH
931PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
932 specify a transport. However, if an address that was verified by such a
933 router was the subject of a callout, Exim crashed because it tried to
934 read the rcpt_include_affixes from the non-existent transport. Now it
935 just assumes that the setting of that option is false. This bug was
936 introduced by 4.51/PH/31.
937
59cf8544
PH
938PH/28 Changed -d+all to exclude +memory, because that information is very
939 rarely of interest, but it makes the output a lot bigger. People tend to
940 do -d+all out of habit.
941
e7ad8a65
PH
942PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
943 code in os-type was giving problems when libc.so lives in lib64, like on
944 x86_64 Fedora Core.
945
ade42478
PH
946PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
947 aren't the modern standard, and it seems that some systems' include files
948 don't always have them. Exim was already checking for some of the newer
949 ones like T_AAAA, and defining it itself. I've added checks for all the
950 record types that Exim uses.
951
182ad5cf
PH
952PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
953 not automatically generating a new one, as it is supposed to. This
954 prevented TLS from working. If the file did exist, but contained invalid
955 data, a new version was generated, as expected. It was only the case of a
956 non-existent file that was broken.
957
b0d9fc80
TK
958TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
959 with a change in libdomainkeys > 0.64.
960
961TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
962 from DNS. If the selector record carries the flag, it now has
963 precedence over the domain-wide flag.
964
965TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
966
47c7a64a
PH
967PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
968 the use of a port name that isn't defined in /etc/services) occurred, the
969 message was deferred as in a normal delivery, and thus remained on the
970 spool, instead of being failed because of the mua_wrapper setting. This
971 is now fixed, and I tidied up some of the mua_wrapper messages at the
972 same time.
973
a388bce4
SC
974SC/08 Eximstats: whilst parsing the mainlog(s), store information about
975 the messages in a hash of arrays rather than using individual hashes.
976 This is a bit cleaner and results in dramatic memory savings, albeit
977 at a slight CPU cost.
978
979SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
980 as requested by Marc Sherman.
981
982SC/10 Eximstats: added histograms for user specified patterns as requested
983 by Marc Sherman.
984
0793e4ed
SC
985SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
986
c58b88df
PH
987PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
988 fopen() in the content-scanning modules that did not already have it.
989
e7ad8a65 990
7982096b
PH
991Exim version 4.51
992-----------------
993
1a46a8c5
PH
994TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
995 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
996
2f079f46 997TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
998
999TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1000
1001PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1002 to test Sieve filters that use "vacation".
1003
1004PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1005 that changes the way the GnuTLS parameters are stored in the cache file.
1006 The new format can be generated externally. For backward compatibility,
1007 if the data in the cache doesn't make sense, Exim assumes it has read an
1008 old-format file, and it generates new data and writes a new file. This
1009 means that you can't go back to an older release without removing the
1010 file.
1011
1012PH/03 A redirect router that has both "unseen" and "one_time" set does not
1013 work if there are any delivery delays because "one_time" forces the
1014 parent to be marked "delivered", so its unseen clone is never tried
1015 again. For this reason, Exim now forbids the simultaneous setting of
1016 these two options.
1017
1018PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1019 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1020 entry if you want to know the details. The fix, however, neglected to
1021 consider the case when local delivery batching is involved. The test for
1022 "previously delivered" was not happening when checking to see if an
1023 address could be batched with a previous (undelivered) one; under
1024 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1025 address.
1a46a8c5
PH
1026
1027PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1028 in its include files, and this causes problems building Exim.
1029
1030PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1031 header_syntax) but Exim was just ignoring anything given after a slash.
1032 In particular, this caused confusion with an attempt to use "verify =
1033 reverse_host_lookup/defer_ok". An error is now given when options are
1034 supplied for verify items that do not have them. (Maybe reverse_host_
1035 lookup should have a defer_ok option, but that's a different point.)
1036
1037PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1038 defined by RFC 821) to 2048, because there were problems with some AUTH
1039 commands, and RFC 1869 says the size should be increased for extended
1040 SMTP commands that take arguments.
1041
1042PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1043 Finch).
1044
1045PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1046 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1047
49c2d5ea
PH
1048PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1049 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1050 whatever). Otherwise the password may appear in the log. Following change
1051 PH/42 below, there is no longer a chance of it appearing in a bounce
1052 message.
49c2d5ea 1053
bf759a8b
PH
1054PH/11 Installed exipick version 20050225.0 from John Jetmore.
1055
83364d30
PH
1056PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1057 of its addresses was ever tried. (Bugzilla bug #2.)
1058
7999bbd7
PH
1059PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1060 the result incorrectly in the debug output. (It correctly added a newline
1061 to what was transported.)
1062
7dbf77c9
PH
1063TF/01 Added $received_time.
1064
74e0617f
PH
1065PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1066 commented out examples of how to interface to a virus scanner and to
1067 SpamAssassin. Also added commented examples of av_scanner and
1068 spamd_address settings.
1069
2f079f46
PH
1070PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1071 and controls are allowed in which ACLs. There were a couple of minor
1072 errors. Some of the entries in the conditions table (which is a table of
1073 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1074 negation of where the condition IS allowed.
1075
8c841523
PH
1076PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1077
7766a4f0
PH
1078PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1079 header file does not have a version number, so I've had to invent a new
1080 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1081 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1082 radiusclient), but it was contributed by a Radius user.
1083
8b417f2c
PH
1084PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1085 files or directories, for OpenSSL.
1086
901f42cb
PH
1087PH/19 When an Exim process that is running as root has to create an Exim log
1088 file, it does so in a subprocess that runs as exim:exim so as to get the
1089 ownership right at creation (otherwise, other Exim processes might see
1090 the file with the wrong ownership). There was no test for failure of this
1091 fork() call, which would lead to the process getting stuck as it waited
1092 for a non-existent subprocess. Forks do occasionally fail when resources
1093 run out. I reviewed all the other calls to fork(); they all seem to check
1094 for failure.
1095
f9b9210e
PH
1096PH/20 When checking for unexpected SMTP input at connect time (before writing
1097 the banner), Exim was not dealing correctly with a non-positive return
1098 from the read() function. If the client had disconnected by this time,
1099 the result was a log entry for a synchronization error with an empty
1100 string after "input=" when read() returned zero. If read() returned -1
1101 (an event I could not check), uninitialized data bytes were printed.
1102 There were reports of junk text (parts of files, etc) appearing after
1103 "input=".
1104
54cdb463
PH
1105PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1106
cf00dad6
PH
1107PH/22 Added support for macro redefinition, and (re)definition in between
1108 driver and ACL definitions.
1109
acb1b346
PH
1110PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1111 forgetting to use the resulting value; it was using the unexpanded value.
1112
c5ddb310
PH
1113PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1114 hadn't been configured. The fix is from Juergen Kreileder, who
1115 understands it better than I do:
1116
1117 "Here's what I see happening with three configured cyrus_sasl
1118 authenticators configured (plain, login, cram-md5):
1119
1120 On startup auth_cyrus_sasl_init() gets called for each of these.
1121 This means three calls to sasl_listmech() without a specified mech_list.
1122 => SASL tests which mechs of all available mechs actually work
1123 => three warnings about OTP not working
1124 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1125
1126 With the patch, sasl_listmech() also gets called three times. But now
1127 SASL's mech_list option is set to the server_mech specified in the the
1128 authenticator. Or in other words, the answer from sasl_listmech()
1129 gets limited to just the mech you're testing for (which is different
1130 for each call.)
1131 => the return list contains just 'plain' or 'login', 'cram-md5' or
1132 nothing depending on the value of ob->server_mech.
1133
1134 I've just tested the patch: Authentication still works fine,
1135 unavailable mechs specified in the exim configuration are still
1136 caught, and the auth.log warnings about OTP are gone."
1137
31619da6
PH
1138PH/25 When debugging is enabled, the contents of the command line are added
1139 to the debugging output, even when log_selector=+arguments is not
1140 specified.
1141
bebaf0fc
PH
1142PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1143 answer is "GNU", and only if the return is "GNU/something" is the answer
1144 "Linux".
1145
475fe28a
PH
1146PH/27 $acl_verify_message is now set immediately after the failure of a
1147 verification in an ACL, and so is available in subsequent modifiers. In
1148 particular, the message can be preserved by coding like this:
1149
1150 warn !verify = sender
1151 set acl_m0 = $acl_verify_message
1152
1153 Previously, $acl_verify_message was set only while expanding "message"
1154 and "log_message" when a very denied access.
1155
7e8bec7a
PH
1156PH/28 Modified OS/os.c-Linux with
1157
1158 -#ifndef OS_LOAD_AVERAGE
1159 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1160
1161 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1162 nomenclature these days.)
1163
e4a89c47
PH
1164PH/29 Installed patch from the Sieve maintainer that adds the options
1165 sieve_useraddress and sieve_subaddress to the redirect router.
1166
5ca2a9a1
PH
1167PH/30 In these circumstances:
1168 . Two addresses routed to the same list of hosts;
1169 . First host does not offer TLS;
1170 . First host accepts first address;
1171 . First host gives temporary error to second address;
1172 . Second host offers TLS and a TLS session is established;
1173 . Second host accepts second address.
1174 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1175 and peerdn, if requested) that were in fact used only for the second
1176 address.
7e8bec7a 1177
c688b954
PH
1178PH/31 When doing a callout as part of verifying an address, Exim was not paying
1179 attention to any local part prefix or suffix that was matched by the
1180 router that accepted the address. It now behaves in the same way as it
1181 does for delivery: the affixes are removed from the local part unless
1182 rcpt_include_affixes is set on the transport.
1183
fed77020
PH
1184PH/32 Add the sender address, as F=<...>, to the log line when logging a
1185 timeout during the DATA phase of an incoming message.
1186
7fe1560f
PH
1187PH/33 Sieve envelope tests were broken for match types other than :is. I have
1188 applied a patch sanctioned by the Sieve maintainer.
c688b954 1189
ebb6e6d5
PH
1190PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1191 the uid or gid is negative. A case of a negative gid caused this to be
1192 noticed. The fix allows for either to be negative.
1193
9c4e8f60
PH
1194PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1195 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1196 overlooked.
1197
1198PH/36 The change PH/12 above was broken. Fixed it.
1199
d7174846
PH
1200PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1201 the grounds that routing the same address twice would always produce the
1202 same answer. This might have been true once, but it is certainly no
1203 longer true now. Routing a child address may depend on the previous
1204 routing that produced that child. Some complicated redirection strategies
1205 went wrong when messages had multiple recipients, and made Exim's
1206 behaviour dependent on the order in which the addresses were given.
1207
1208 I have moved the duplicate checking until after the routing is complete.
1209 Exim scans the addresses that are assigned to local and remote
1210 transports, and removes any duplicates. This means that more work will be
1211 done, as duplicates will always all be routed, but duplicates are
1212 presumably rare, so I don't expect this is of any significance.
1213
1214 For deliveries to pipes, files, and autoreplies, the duplicate checking
1215 still happens during the routing process, since they are not going to be
1216 routed further.
1217
cfe75fc3
PH
1218PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1219 It corrects a timeout issue with spamd. This is Ian's comment: "The
1220 background is that sometimes spamd either never reads data from a
1221 connection it has accepted, or it never writes response data. The exiscan
1222 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1223 blindly assumes that writes won't block so it may never time out."
1224
be22d70e
PH
1225PH/39 Allow G after quota size as well as K and M.
1226
0612b098
PH
1227PH/40 The value set for $authenticated_id in an authenticator may not contain
1228 binary zeroes or newlines because the value is written to log lines and
1229 to spool files. There was no check on this. Now the value is run through
1230 the string_printing() function so that such characters are converted to
1231 printable escape sequences.
1232
2e0c1448
PH
1233PH/41 $message_linecount is a new variable that contains the total number of
1234 lines in the message. Compare $body_linecount, which is the count for the
1235 body only.
1236
447d236c
PH
1237PH/42 Exim no longer gives details of delivery errors for specific addresses in
1238 bounce and delay warning messages, except in certain special cases, which
1239 are as follows:
1240
1241 (a) An SMTP error message from a remote host;
1242 (b) A message specified in a :fail: redirection;
1243 (c) A message specified in a "fail" command in a system filter;
1244 (d) A message specified in a FAIL return from the queryprogram router;
1245 (e) A message specified by the cannot_route_message router option.
1246
1247 In these cases only, Exim does include the error details in bounce and
1248 warning messages. There are also a few cases where bland messages such
1249 as "unrouteable address" or "local delivery error" are given.
1250
d20976dc
PH
1251PH/43 $value is now also set for the "else" part of a ${run expansion.
1252
f656d135
PH
1253PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1254 being worked on, but at least Exim now implements the latest version to
1255 play with."
1256
2e2a30b4
PH
1257PH/45 In a pipe transport, although a timeout while waiting for the pipe
1258 process to complete was treated as a delivery failure, a timeout while
1259 writing the message to the pipe was logged, but erroneously treated as a
1260 successful delivery. Such timeouts include transport filter timeouts. For
1261 consistency with the overall process timeout, these timeouts are now
1262 treated as errors, giving rise to delivery failures by default. However,
1263 there is now a new Boolean option for the pipe transport called
1264 timeout_defer, which, if set TRUE, converts the failures into defers for
1265 both kinds of timeout. A transport filter timeout is now identified in
1266 the log output.
1267
9176e9f0
PH
1268PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1269 systems where "make" and "gmake" are different, calling "gmake" at top
1270 level broke things. I've arranged for the value of $(MAKE) to be passed
1271 from the Makefile to this script so that it can call the same version of
1272 "make".
1273
7982096b 1274
bbe902f0
PH
1275A note about Exim versions 4.44 and 4.50
1276----------------------------------------
1277
1278Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1279changes of various kinds. As a consequence, a big documentation update was
1280needed. This delayed the release for rather longer than seemed good, especially
1281in the light of a couple of (minor) security issues. Therefore, the changes
1282that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1283release. So 4.44 and 4.50 are in effect two different branches that both start
1284from 4.43.
1285
1286I have left the 4.50 change log unchanged; it contains all the changes since
12874.43. The change log for 4.44 is below; many of its items are identical to
1288those for 4.50. This seems to be the most sensible way to preserve the
1289historical information.
1290
1291
f7b63901 1292Exim version 4.50
495ae4b0
PH
1293-----------------
1294
5fe762f6
PH
1295 1. Minor wording change to the doc/README.SIEVE file.
1296
139059f6 1297 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1298 computation of the current number of files was incorrect.
495ae4b0 1299
7086e875
PH
1300 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1301 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1302 place.
1303
35af9f61
PH
1304 4. Give more explanation in the error message when the command for a transport
1305 filter fails to execute.
1306
b668c215
PH
1307 5. There are several places where Exim runs a non-Exim command in a
1308 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1309 was being done only for the command run by the queryprogram router. It is
1310 now done for all such subprocesses. The other cases are: ${run, transport
1311 filters, and the commands run by the lmtp and pipe transports.
1312
a494b1e1
PH
1313 6. Added CONFIGURE_GROUP build-time option.
1314
1315 7. Some older OS have a limit of 256 on the maximum number of file
1316 descriptors. Exim was using setrlimit() to set 1000 as a large value
1317 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1318 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1319
c5fcb476
PH
1320 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1321 was an oversight, and furthermore, ever since the addition of extra
1322 controls (e.g. 4.43/32), the checks on when to allow different forms of
1323 "control" were broken. There should now be diagnostics for all cases when a
1324 control that does not make sense is encountered.
1325
69358f02
PH
1326 9. Added the /retain_sender option to "control=submission".
1327
5be20824
PH
132810. $recipients is now available in the predata ACL (oversight).
1329
eb2c0248
PH
133011. Tidy the search cache before the fork to do a delivery from a message
1331 received from the command line. Otherwise the child will trigger a lookup
1332 failure and thereby defer the delivery if it tries to use (for example) a
1333 cached ldap connection that the parent has called unbind on.
1334
2a3eea10
PH
133512. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1336 of $address_data from the recipient verification was clobbered by the
1337 sender verification.
1338
133913. The value of address_data from a sender verification is now available in
1340 $sender_address_data in subsequent conditions in the ACL statement.
1341
23c7ff99
PH
134214. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1343
4deaf07d
PH
134415. Added a new option "connect=<time>" to callout options, to set a different
1345 connection timeout.
1346
926e1192
PH
134716. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1348 was its contents. (It was OK if the option was not defined at all.)
1349
650edc6f
PH
135017. A "Completed" log line is now written for messages that are removed from
1351 the spool by the -Mrm option.
1352
2c7db3f5
PH
135318. New variables $sender_verify_failure and $recipient_verify_failure contain
1354 information about exactly what failed.
1355
3d235903
PH
135619. Added -dd to debug only the daemon process.
1357
7c7ad977
PH
135820. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1359 handles timeouts, both on the server side and network timeouts. Renamed the
1360 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1361
981756db
PH
136221. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1363 It is now set to "smtps".
1364
d4eb88df
PH
136522. $host_address is now set to the target address during the checking of
1366 ignore_target_hosts.
1367
136823. When checking ignore_target_hosts for an ipliteral router, no host name was
1369 being passed; this would have caused $sender_host_name to have been used if
1370 matching the list had actually called for a host name (not very likely,
1371 since this list is usually IP addresses). A host name is now passed as
1372 "[x.x.x.x]".
1373
7d468ab8
PH
137424. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1375 code that specifies a non-restarting handler (typically sigaction() in
1376 modern systems) in an attempt to fix a rare and obscure crash bug.
1377
137825. Narrowed the window for a race in the daemon that could cause it to ignore
1379 SIGCHLD signals. This is not a major problem, because they are used only to
1380 wake it up if nothing else does.
1381
62c0818f
PH
138226. A malformed maildirsize file could cause Exim to calculate negative values
1383 for the mailbox size or file count. Odd effects could occur as a result.
1384 The maildirsize information is now recalculated if the size or filecount
1385 end up negative.
1386
26034054
PH
138727. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1388 support for a long time. Removed HAVE_SYS_VFS_H.
1389
af66f652
PH
139028. Installed the latest version of exipick from John Jetmore.
1391
90af77f4
PH
139229. In an address list, if the pattern was not a regular expression, an empty
1393 subject address (from a bounce message) matched only if the pattern was an
1394 empty string. Non-empty patterns were not even tested. This was the wrong
1395 because it is perfectly reasonable to use an empty address as part of a
1396 database query. An empty address is now tested by patterns that are
1397 lookups. However, all the other forms of pattern expect the subject to
1398 contain a local part and a domain, and therefore, for them, an empty
1399 address still always fails if the pattern is not itself empty.
1400
d8ef3577
PH
140130. Exim went into a mad DNS loop when attempting to do a callout where the
1402 host was specified on an smtp transport, and looking it up yielded more
1403 than one IP address.
1404
5cb8cbc6
PH
140531. Re-factored the code for checking spool and log partition space into a
1406 function that finds that data and another that does the check. The former
1407 is then used to implement four new variables: $spool_space, $log_space,
1408 $spool_inodes, and $log_inodes.
1409
14702f5b
PH
141032. The RFC2047 encoding function was originally intended for short strings
1411 such as real names; it was not keeping to the 75-character limit for
1412 encoded words that the RFC imposes. It now respects the limit, and
1413 generates multiple encoded words if necessary. To be on the safe side, I
1414 have increased the buffer size for the ${rfc2047: expansion operator from
1415 1024 to 2048 bytes.
1416
063b1e99
PH
141733. It is now permitted to omit both strings after an "if" condition; if the
1418 condition is true, the result is "true". As before, when the second string
1419 is omitted, a false condition yields an empty string. This makes it less
1420 cumbersome to write custom ACL and router conditions.
1421
652e1b65
PH
142234. Failure to deliver a bounce message always caused it to be frozen, even if
1423 there was an errors_to setting on the router. The errors_to setting is now
1424 respected.
1425
6f0c9a4f
PH
142635. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1427 canonical form (fully expanded) before being placed in
1428 $sender_host_address.
1429
33397d19
PH
143036. The table in the code that translates DNS record types into text (T_A to
1431 "A" for instance) was missing entries for NS and CNAME. It is just possible
1432 that this could have caused confusion if both these types were looked up
1433 for the same domain, because the text type is used as part of Exim's
1434 per-process caching. But the chance of anyone hitting this buglet seems
1435 very small.
1436
7bb56e1f
PH
143737. The dnsdb lookup has been extended in a number of ways.
1438
1439 (1) There is a new type, "zns", which walks up the domain tree until it
1440 finds some nameserver records. It should be used with care.
1441
ea3bc19b
PH
1442 (2) There is a new type, "mxh", which is like "mx" except that it returns
1443 just the host names, not the priorities.
1444
1445 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1446 looked up. The behaviour when one of the lookups defers can be
1447 controlled by a keyword.
7bb56e1f 1448
ea3bc19b 1449 (4) It is now possible to specify the separator character for use when
7bb56e1f 1450 multiple records are returned.
33397d19 1451
0bcb2a0e
PH
145238. The dnslists ACL condition has been extended: it is now possible to supply
1453 a list of IP addresses and/or domains to be looked up in a particular DNS
1454 domain.
1455
2ac0e484
PH
145639. Added log_selector=+queue_time_overall.
1457
4e1fde53
PH
145840. When running the queue in the test harness, wait just a tad after forking a
1459 delivery process, to get repeatability of debugging output.
1460
de365ded
PH
146141. Include certificate and key file names in error message when GnuTLS fails
1462 to set them up, because the GnuTLS error message doesn't include the name
1463 of the failing file when there is a problem reading it.
1464
f05da2e8
PH
146542. Allow both -bf and -bF in the same test run.
1466
d6453af2
PH
146743. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1468
f7b63901
PH
146944. The "Exiscan patch" is now merged into the mainline Exim source.
1470
147145. Sometimes the final signoff response after QUIT could fail to get
1472 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1473 < 0 before doing a fflush(). This bug looks as though it goes back to the
1474 introduction of TLS in release 3.20, but "sometimes" must have been rare
1475 because the tests only now provoked it.
1476
a444213a
PH
147746. Reset the locale to "C" after calling embedded Perl, in case it was changed
1478 (this can affect the format of dates).
1479
0ec020ea
PH
148047. exim_tidydb, when checking for the continued existence of a message for
1481 which it has found a message-specific retry record, was not finding
1482 messages that were in split spool directories. Consequently, it was
1483 deleting retry records that should have stayed in existence.
1484
b1206957
PH
148548. Steve fixed some bugs in eximstats.
1486
148749. The SPA authentication driver was not abandoning authentication and moving
1488 on to the next authenticator when an expansion was forced to fail,
1489 contradicting the general specification for all authenticators. Instead it
1490 was generating a temporary error. It now behaves as specified.
1491
26dd5a95
PH
149250. The default ordering of permitted cipher suites for GnuTLS was pessimal
1493 (the order specifies the preference for clients). The order is now AES256,
1494 AES128, 3DES, ARCFOUR128.
1495
343b2385
PH
149651. Small patch to Sieve code - explicitly set From: when generating an
1497 autoreply.
1498
1c5466b9
PH
149952. Exim crashed if a remote delivery caused a very long error message to be
1500 recorded - for instance if somebody sent an entire SpamAssassin report back
1501 as a large number of 550 error lines. This bug was coincidentally fixed by
1502 increasing the size of one of Exim's internal buffers (big_buffer) that
1503 happened as part of the Exiscan merge. However, to be on the safe side, I
1504 have made the code more robust (and fixed the comments that describe what
1505 is going on).
1506
55ee9ee3
PH
150753. Now that there can be additional text after "Completed" in log lines (if
1508 the queue_time_overall log selector is set), a one-byte patch to exigrep
1509 was needed to allow it to recognize "Completed" as not the last thing in
1510 the line.
1511
d38f8232
PH
151254. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1513 patch that reportedly fixes this has been added. I am not expert enough to
1514 create a test for it. This is what the patch creator wrote:
1515
1516 "I found a little strange behaviour of ldap code when working with
1517 Windows 2003 AD Domain, where users was placed in more than one
1518 Organization Units. When I tried to give exim partial DN, the exit code
1519 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1520 But simultaneously result of request was absolutely normal ldap result,
1521 so I produce this patch..."
1522
3295e65b
PH
1523 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1524 REFERENCE, so I have modified the code to exclude the patch when that macro
1525 is not defined.
1526
7102e136
PH
152755. Some experimental protocols are using DNS PTR records for new purposes. The
1528 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1529 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1530 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1531 CAN-2005-0021
7102e136 1532
3ca0ba97
PH
153356. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1534
c2bcbe20
PH
153557. Double the size of the debug message buffer (to 2048) so that more of very
1536 long debug lines gets shown.
1537
18ce445d
PH
153858. The exicyclog utility now does better if the number of log files to keep
1539 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
1540
1f5b4c3d
PH
154159. Two changes related to the smtp_active_hostname option:
1542
1543 (1) $smtp_active_hostname is now available as a variable.
1544 (2) The default for smtp_banner uses $smtp_active_hostname instead
1545 of $primary_hostname.
1546
b975ba52
PH
154760. The host_aton() function is supposed to be passed a string that is known
1548 to be a valid IP address. However, in the case of IPv6 addresses, it was
1549 not checking this. This is a hostage to fortune. Exim now panics and dies
1550 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
1551 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1552 components; fortuitously, this particular loophole had already been fixed
1553 by change 4.50/55 above.
1554
1555 If there are any other similar loopholes, the new check in host_aton()
1556 itself should stop them being exploited. The report I received stated that
1557 data on the command line could provoke the exploit when Exim was running as
1558 exim, but did not say which command line option was involved. All I could
1559 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1560 running as the user.
ea3a6f44 1561 CAN-2005-0021
85b87bc2
PH
1562
156361. There was a buffer overflow vulnerability in the SPA authentication code
1564 (which came originally from the Samba project). I have added a test to the
1565 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 1566 CAN-2005-0022
b975ba52 1567
17ffcae7
PH
156862. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
1569 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
1570
d95f9fdb
PH
157163. The daemon start-up calls getloadavg() while still root for those OS that
1572 need the first call to be done as root, but it missed one case: when
1573 deliver_queue_load_max is set with deliver_drop_privilege. This is
1574 necessary for the benefit of the queue runner, because there is no re-exec
1575 when deliver_drop_privilege is set.
1576
86b8287f
PH
157764. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
1578 This has been fixed.
1579
60dc5e56
PH
158065. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1581 was in use, was not putting the data itself into the right store pool;
1582 consequently, it could be overwritten for a subsequent message in the same
1583 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1584 the caching.)
1585
533244af
PH
158666. Added hosts_max_try_hardlimit to the smtp transport, default 50.
1587
a5a28604
PH
158867. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
1589 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
1590 the function were treating the return as a boolean value, which happened to
1591 work because 0=false and not-0=true, but is not correct code.
1592
7e634d24
PH
159368. The host_aton() function was not handling scoped IPv6 addresses (those
1594 with, for example, "%eth0" on the end) correctly.
1595
3e11c26b
PH
159669. Fixed some compiler warnings in acl.c for the bitmaps specified with
1597 negated items (that is, ~something) in unsigned ints. Some compilers
1598 apparently mutter when there is no cast.
1599
6729cf78
PH
160070. If an address verification called from an ACL failed, and did not produce a
1601 user-specific message (i.e. there was only a "system" message), nothing was
1602 put in $acl_verify_message. In this situation, it now puts the system
1603 message there.
1604
00f00ca5
PH
160571. Change 4.23/11 added synchronization checking at the start of an SMTP
1606 session; change 4.31/43 added the unwanted input to the log line - except
1607 that it did not do this in the start of session case. It now does.
1608
c9bdd01c
PH
160972. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
1610 This is wrong and can cause the other end to generate a synchronization
1611 error if it is another Exim or anything else that does the synchronization
1612 check. A QUIT command is no longer sent after a timeout.
1613
d43194df
PH
161473. $host_lookup_deferred has been added, to make it easier to detect DEFERs
1615 during host lookups.
1616
fe5b5d0b
PH
161774. The defer_ok option of callout verification was not working if it was used
1618 when verifying addresses in header lines, that is, for this case:
1619
1620 verify = header_sender/callout=defer_ok
1621
76a2d7ba
PH
162275. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
1623 those file descriptors could be used for SMTP connections. If anything
1624 wrote to stderr (the example that came up was "warn" in embedded Perl), it
1625 could be sent to the SMTP client, causing chaos. The daemon now opens
1626 stdin, stdout, and stderr to /dev/null when it puts itself into the
1627 background.
1628
162976. Arrange for output from Perl's "warn" command to be written to Exim's main
1630 log by default. The user can override this with suitable Perl magic.
1631
04f7d5b9
PH
163277. The use of log_message on a "discard" ACL verb, which is supposed to add to
1633 the log message when discard triggers, was not working for the DATA ACL or
1634 for the non-SMTP ACL.
1635
bc60667e
PH
163678. Error message wording change in sieve.c.
1637
bb6e88ff
PH
163879. If smtp_accept_max_per_host was set, the number of connections could be
1639 restricted to fewer than expected, because the daemon was trying to set up
1640 a new connection before checking whether the processes handling previous
1641 connections had finished. The check for completed processes is now done
1642 earlier. On busy systems, this bug wouldn't be noticed because something
1643 else would have woken the daemon, and it would have reaped the completed
1644 process earlier.
1645
1e70f85b
PH
164680. If a message was submitted locally by a user whose login name contained one
1647 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
1648 It caused a spool format error. I have fixed the spool reading code. A
1649 related problem was that the "from" clause in the Received: line became
1650 illegal because of the space(s). It is now covered by ${quote_local_part.
1651
165281. Included the latest eximstats from Steve (adds average sizes to HTML Top
1653 tables).
1654
4e01f9d6
PH
165582. Updated OS/Makefile-AIX as per message from Mike Meredith.
1656
1ee1cef2
PH
165783. Patch from Sieve maintainer to fix unterminated string problem in
1658 "vacation" handling.
1659
6e2b4ccc
PH
166084. Some minor changes to the Linux configuration files to help with other
1661 OS variants using glibc.
1662
8e669ac1
PH
166385. One more patch for Sieve to update vacation handling to latest spec.
1664
495ae4b0 1665
bbe902f0
PH
1666----------------------------------------------------
1667See the note above about the 4.44 and 4.50 releases.
1668----------------------------------------------------
1669
1670
1671Exim version 4.44
1672-----------------
1673
1674 1. Change 4.43/35 introduced a bug that caused file counts to be
1675 incorrectly computed when quota_filecount was set in an appendfile
1676 transport
1677
1678 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1679 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1680 place.
1681
1682 3. Give more explanation in the error message when the command for a transport
1683 filter fails to execute.
1684
1685 4. There are several places where Exim runs a non-Exim command in a
1686 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1687 was being done only for the command run by the queryprogram router. It is
1688 now done for all such subprocesses. The other cases are: ${run, transport
1689 filters, and the commands run by the lmtp and pipe transports.
1690
1691 5. Some older OS have a limit of 256 on the maximum number of file
1692 descriptors. Exim was using setrlimit() to set 1000 as a large value
1693 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1694 systems. I've change it so that if it can't get 1000, it tries for 256.
1695
1696 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1697 was an oversight, and furthermore, ever since the addition of extra
1698 controls (e.g. 4.43/32), the checks on when to allow different forms of
1699 "control" were broken. There should now be diagnostics for all cases when a
1700 control that does not make sense is encountered.
1701
1702 7. $recipients is now available in the predata ACL (oversight).
1703
1704 8. Tidy the search cache before the fork to do a delivery from a message
1705 received from the command line. Otherwise the child will trigger a lookup
1706 failure and thereby defer the delivery if it tries to use (for example) a
1707 cached ldap connection that the parent has called unbind on.
1708
1709 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1710 of $address_data from the recipient verification was clobbered by the
1711 sender verification.
1712
171310. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1714 was its contents. (It was OK if the option was not defined at all.)
1715
171611. A "Completed" log line is now written for messages that are removed from
1717 the spool by the -Mrm option.
1718
171912. $host_address is now set to the target address during the checking of
1720 ignore_target_hosts.
1721
172213. When checking ignore_target_hosts for an ipliteral router, no host name was
1723 being passed; this would have caused $sender_host_name to have been used if
1724 matching the list had actually called for a host name (not very likely,
1725 since this list is usually IP addresses). A host name is now passed as
1726 "[x.x.x.x]".
1727
172814. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1729 code that specifies a non-restarting handler (typically sigaction() in
1730 modern systems) in an attempt to fix a rare and obscure crash bug.
1731
173215. Narrowed the window for a race in the daemon that could cause it to ignore
1733 SIGCHLD signals. This is not a major problem, because they are used only to
1734 wake it up if nothing else does.
1735
173616. A malformed maildirsize file could cause Exim to calculate negative values
1737 for the mailbox size or file count. Odd effects could occur as a result.
1738 The maildirsize information is now recalculated if the size or filecount
1739 end up negative.
1740
174117. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1742 support for a long time. Removed HAVE_SYS_VFS_H.
1743
ea3a6f44 174418. Updated exipick to current release from John Jetmore.
bbe902f0
PH
1745
174619. Allow an empty sender to be matched against a lookup in an address list.
1747 Previously the only cases considered were a regular expression, or an
1748 empty pattern.
1749
175020. Exim went into a mad DNS lookup loop when doing a callout where the
1751 host was specified on the transport, if the DNS lookup yielded more than
1752 one IP address.
1753
ea3a6f44
NM
175421. The RFC2047 encoding function was originally intended for short strings
1755 such as real names; it was not keeping to the 75-character limit for
1756 encoded words that the RFC imposes. It now respects the limit, and
1757 generates multiple encoded words if necessary. To be on the safe side, I
1758 have increased the buffer size for the ${rfc2047: expansion operator from
1759 1024 to 2048 bytes.
bbe902f0 1760
ea3a6f44
NM
176122. Failure to deliver a bounce message always caused it to be frozen, even if
1762 there was an errors_to setting on the router. The errors_to setting is now
1763 respected.
bbe902f0
PH
1764
176523. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1766 canonical form (fully expanded) before being placed in
1767 $sender_host_address.
1768
176924. Updated eximstats to version 1.33
1770
ea3a6f44
NM
177125. Include certificate and key file names in error message when GnuTLS fails
1772 to set them up, because the GnuTLS error message doesn't include the name
1773 of the failing file when there is a problem reading it.
bbe902f0
PH
1774
177526. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 1776 As per change 25.
bbe902f0 1777
ea3a6f44
NM
177827. Reset the locale to "C" after calling embedded Perl, in case it was changed
1779 (this can affect the format of dates).
bbe902f0 1780
ea3a6f44
NM
178128. exim_tidydb, when checking for the continued existence of a message for
1782 which it has found a message-specific retry record, was not finding
1783 messages that were in split spool directories. Consequently, it was
1784 deleting retry records that should have stayed in existence.
bbe902f0
PH
1785
178629. eximstats updated to version 1.35
1787 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
1788 1.35 - bugfix such that pie charts by volume are generated correctly
1789
ea3a6f44
NM
179030. The SPA authentication driver was not abandoning authentication and moving
1791 on to the next authenticator when an expansion was forced to fail,
1792 contradicting the general specification for all authenticators. Instead it
1793 was generating a temporary error. It now behaves as specified.
bbe902f0 1794
ea3a6f44
NM
179531. The default ordering of permitted cipher suites for GnuTLS was pessimal
1796 (the order specifies the preference for clients). The order is now AES256,
1797 AES128, 3DES, ARCFOUR128.
bbe902f0 1798
ea3a6f44
NM
179931. Small patch to Sieve code - explicitly set From: when generating an
1800 autoreply.
bbe902f0 1801
ea3a6f44
NM
180232. Exim crashed if a remote delivery caused a very long error message to be
1803 recorded - for instance if somebody sent an entire SpamAssassin report back
1804 as a large number of 550 error lines. This bug was coincidentally fixed by
1805 increasing the size of one of Exim's internal buffers (big_buffer) that
1806 happened as part of the Exiscan merge. However, to be on the safe side, I
1807 have made the code more robust (and fixed the comments that describe what
1808 is going on).
bbe902f0 1809
ea3a6f44
NM
181033. Some experimental protocols are using DNS PTR records for new purposes. The
1811 keys for these records are domain names, not reversed IP addresses. The
1812 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1813 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
1814 CAN-2005-0021
1815
ea3a6f44
NM
181634. The host_aton() function is supposed to be passed a string that is known
1817 to be a valid IP address. However, in the case of IPv6 addresses, it was
1818 not checking this. This is a hostage to fortune. Exim now panics and dies
1819 if the condition is not met. A case was found where this could be provoked
1820 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1821 components; fortuitously, this particular loophole had already been fixed
1822 by change 4.50/55 or 4.44/33 above.
1823
1824 If there are any other similar loopholes, the new check in host_aton()
1825 itself should stop them being exploited. The report I received stated that
1826 data on the command line could provoke the exploit when Exim was running as
1827 exim, but did not say which command line option was involved. All I could
1828 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1829 running as the user.
bbe902f0
PH
1830 CAN-2005-0021
1831
ea3a6f44
NM
183235. There was a buffer overflow vulnerability in the SPA authentication code
1833 (which came originally from the Samba project). I have added a test to the
1834 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
1835 CAN-2005-0022
1836
ea3a6f44
NM
183736. The daemon start-up calls getloadavg() while still root for those OS that
1838 need the first call to be done as root, but it missed one case: when
1839 deliver_queue_load_max is set with deliver_drop_privilege. This is
1840 necessary for the benefit of the queue runner, because there is no re-exec
1841 when deliver_drop_privilege is set.
bbe902f0 1842
ea3a6f44
NM
184337. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1844 was in use, was not putting the data itself into the right store pool;
1845 consequently, it could be overwritten for a subsequent message in the same
1846 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1847 the caching.)
bbe902f0 1848
ea3a6f44
NM
184938. Sometimes the final signoff response after QUIT could fail to get
1850 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1851 < 0 before doing a fflush(). This bug looks as though it goes back to the
1852 introduction of TLS in release 3.20, but "sometimes" must have been rare
1853 because the tests only now provoked it.
bbe902f0
PH
1854
1855
495ae4b0
PH
1856Exim version 4.43
1857-----------------
1858
1859 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
1860 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
1861 Now it returns an integer. A number of calls were still expecting a T/F
1862 return. Fortuitously, in all cases, the tests worked in OK situations,
1863 which is the norm. However, things would have gone wrong on any write
1864 failures on the smtp file descriptor. This function is used when sending
1865 messages over SMTP and also when doing verify callouts.
1866
1867 2. When Exim is called to do synchronous delivery of a locally submitted
1868 message (the -odf or -odi options), it no longer closes stderr before doing
1869 the delivery.
1870
1871 3. Implemented the mua_wrapper option.
1872
1873 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
1874
1875 5. Implemented the functions header_remove(), header_testname(),
1876 header_add_at_position(), and receive_remove_recipient(), and exported them
1877 to local_scan().
1878
1879 6. If an ACL "warn" statement specified the addition of headers, Exim already
1880 inserted X-ACL-Warn: at the start if there was no header name. However, it
1881 was not making this test for the second and subsequent header lines if
1882 there were newlines in the string. This meant that an invalid header could
1883 be inserted if Exim was badly configured.
1884
1885 7. Allow an ACL "warn" statement to add header lines at the start or after all
1886 the Received: headers, as well as at the end.
1887
1888 8. Added the rcpt_4xx retry error code.
1889
1890 9. Added postmaster_mailfrom=xxx to callout verification option.
1891
189210. Added mailfrom=xxxx to the callout verification option, for verify=
1893 header_sender only.
1894
189511. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
1896 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
1897
189812. Inserted some casts to stop certain compilers warning when using pointer
1899 differences as field lengths or precisions in printf-type calls (mostly
1900 affecting debugging statements).
1901
190213. Added optional readline() support for -be (dynamically loaded).
1903
190414. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
1905 same clock tick as a message's arrival, so that its received time was the
1906 same as the "first fail" time on the retry record, and that message
1907 remained on the queue past the ultimate address timeout, every queue runner
1908 would try a delivery (because it was past the ultimate address timeout) but
1909 after another failure, the ultimate address timeout, which should have then
1910 bounced the address, did not kick in. This was a "< instead of <=" error;
1911 in most cases the first failure would have been in the next clock tick
1912 after the received time, and all would be well.
1913
191415. The special items beginning with @ in domain lists (e.g. @mx_any) were not
1915 being recognized when the domain list was tested by the match_domain
1916 condition in an expansion string.
1917
191816. Added the ${str2b64: operator.
1919
192017. Exim was always calling setrlimit() to set a large limit for the number of
1921 processes, without checking whether the existing limit was already
1922 adequate. (It did check for the limit on file descriptors.) Furthermore,
1923 errors from getrlimit() and setrlimit() were being ignored. Now they are
1924 logged to the main and panic logs, but Exim does carry on, to try to do its
1925 job under whatever limits there are.
1926
192718. Imported PCRE 5.0.
1928
192919. Trivial typo in log message " temporarily refused connection" (the leading
1930 space).
1931
193220. If the log selector return_path_on_delivery was set and an address was
1933 redirected to /dev/null, the delivery process crashed because it assumed
1934 that a return path would always be set for a "successful" delivery. In this
1935 case, the whole delivery is bypassed as an optimization, and therefore no
1936 return path is set.
1937
193821. Internal re-arrangement: the function for sending a challenge and reading
1939 a response while authentication was assuming a zero-terminated challenge
1940 string. It's now changed to take a pointer and a length, to allow for
1941 binary data in such strings.
1942
194322. Added the cyrus_sasl authenticator (code supplied by MBM).
1944
194523. Exim was not respecting finduser_retries when seeking the login of the
1946 uid under which it was called; it was always trying 10 times. (The default
1947 setting of finduser_retries is zero.) Also, it was sleeping after the final
1948 failure, which is pointless.
1949
195024. Implemented tls_on_connect_ports.
1951
195225. Implemented acl_smtp_predata.
1953
195426. If the domain in control=submission is set empty, Exim assumes that the
1955 authenticated id is a complete email address when it generates From: or
1956 Sender: header lines.
1957
195827. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
1959 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
1960 chown and chgrp in /bin and hostname in /usr/bin.
1961
196228. Exim was keeping the "process log" file open after each use, just as it
1963 does for the main log. This opens the possibility of it remaining open for
1964 long periods when the USR1 signal hits a daemon. Occasional processlog
1965 errors were reported, that could have been caused by this. Anyway, it seems
1966 much more sensible not to leave this file open at all, so that is what now
1967 happens.
1968
196929. The long-running daemon process does not normally write to the log once it
1970 has entered its main loop, and it closes the log before doing so. This is
1971 so that log files can straightforwardly be renamed and moved. However,
1972 there are a couple of unusual error situations where the daemon does write
1973 log entries, and I had neglected to close the log afterwards.
1974
197530. The text of an SMTP error response that was received during a remote
1976 delivery was being truncated at 512 bytes. This is too short for some of
1977 the long messages that one sometimes sees. I've increased the limit to
1978 1024.
1979
198031. It is now possible to make retry rules that apply only when a message has a
1981 specific sender, in particular, an empty sender.
1982
198332. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
1984 it possible to be selective about when SMTP synchronization is enforced.
1985
198633. Added "control = caseful_local_part" and "control = "caselower_local_part".
1987
198832. Implemented hosts_connection_nolog.
1989
199033. Added an ACL for QUIT.
1991
199234. Setting "delay_warning=" to disable warnings was not working; it gave a
1993 syntax error.
1994
199535. Added mailbox_size and mailbox_filecount to appendfile.
1996
199736. Added control = no_multiline_responses to ACLs.
1998
199937. There was a bug in the logic of the code that waits for the clock to tick
2000 in the case where the clock went backwards by a substantial amount such
2001 that the microsecond fraction of "now" was more than the microsecond
2002 fraction of "then" (but the whole seconds number was less).
2003
200438. Added support for the libradius Radius client library this is found on
2005 FreeBSD (previously only the radiusclient library was supported).
2006
2007
2008Exim version 4.42
2009-----------------
2010
2011 1. When certain lookups returned multiple values in the form name=value, the
2012 quoting of the values was not always being done properly. Specifically:
2013 (a) If the value started with a double quote, but contained no whitespace,
2014 it was not quoted.
2015 (b) If the value contained whitespace other than a space character (i.e.
2016 tabs or newlines or carriage returns) it was not quoted.
2017 This fix has been applied to the mysql and pgsql lookups by writing a
2018 separate quoting function and calling it from the lookup code. The fix
2019 should probably also be applied to nisplus, ibase and oracle lookups, but
2020 since I cannot test any of those, I have not disturbed their existing code.
2021
2022 2. A hit in the callout cache for a specific address caused a log line with no
2023 reason for rejecting RCPT. Now it says "Previous (cached) callout
2024 verification failure".
2025
2026 3. There was an off-by-one bug in the queryprogram router. An over-long
2027 return line was truncated at 256 instead of 255 characters, thereby
2028 overflowing its buffer with the terminating zero. As well as fixing this, I
2029 have increased the buffer size to 1024 (and made a note to document this).
2030
2031 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2032 when Exim is waiting for an SMTP response from a remote server, Exim
2033 restarts its select() call on the socket, thereby resetting its timeout.
2034 This is not a problem when such interrupts are rare. Somebody set up a cron
2035 job to run exiwhat every 2 minutes, which is less than the normal select()
2036 timeout (5 or 10 minutes). This meant that the select() timeout never
2037 kicked in because it was always reset. I have fixed this by comparing the
2038 time when an interrupt arrives with the time at the start of the first call
2039 to select(). If more time than the timeout has elapsed, the interrupt is
2040 treated as a timeout.
2041
2042 5. Some internal re-factoring in preparation for the addition of Sieve
2043 extensions (by MH). In particular, the "personal" test is moved to a
2044 separate function, and given an option for scanning Cc: and Bcc: (which is
2045 not set for Exim filters).
2046
2047 6. When Exim created an email address using the login of the caller as the
2048 local part (e.g. when creating a From: or Sender: header line), it was not
2049 quoting the local part when it contained special characters such as @.
2050
2051 7. Installed new OpenBSD configuration files.
2052
2053 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2054 try to make them clearer.
2055
2056 9. Callout options, other than the timeout value, were being ignored when
2057 verifying sender addresses in header lines. For example, when using
2058
2059 verify = header_sender/callout=no_cache
2060
2061 the cache was (incorrectly) being used.
2062
206310. Added a missing instance of ${EXE} to the exim_install script; this affects
2064 only the Cygwin environment.
2065
206611. When return_path_on_delivery was set as a log selector, if different remote
2067 addresses in the same message used different return paths and parallel
2068 remote delivery occurred, the wrong values would sometimes be logged.
2069 (Whenever a remote delivery process finished, the return path value from
2070 the most recently started remote delivery process was logged.)
2071
207212. RFC 3848 specifies standard names for the "with" phrase in Received: header
2073 lines when AUTH and/or TLS are in use. This is the "received protocol"
2074 field. Exim used to use "asmtp" for authenticated SMTP, without any
2075 indication (in the protocol name) for TLS use. Now it follows the RFC and
2076 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2077 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2078 names appear in log lines as well as in Received: header lines.
2079
208013. Installed MH's patches for Sieve to add the "copy" and "vacation"
2081 extensions, and comparison tests, and to fix some bugs.
2082
208314. Changes to the "personal" filter test:
2084
2085 (1) The test was buggy in that it was just doing the equivalent of
2086 "contains" tests on header lines. For example, if a user's address was
2087 anne@some.where, the "personal" test would incorrectly be true for
2088
2089 To: susanne@some.where
2090
2091 This test is now done by extracting each address from the header in turn,
2092 and checking the entire address. Other tests that are part of "personal"
2093 are now done using regular expressions (for example, to check local parts
2094 of addresses in From: header lines).
2095
2096 (2) The list of non-personal local parts in From: addresses has been
2097 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2098 taken from the Sieve specification recommendations.
2099
2100 (3) If the message contains any header line starting with "List-" it is
2101 treated as non-personal.
2102
2103 (4) The test for "circular" in the Subject: header line has been removed
2104 because it now seems ill-conceived.
2105
210615. Minor typos in src/EDITME comments corrected.
2107
210816. Installed latest exipick from John Jetmore.
2109
211017. If headers_add on a router specified a text string that was too long for
2111 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2112 of string_sprintf() is now avoided.
2113
211418. $message_body_size was not set (it was always zero) when running the DATA
2115 ACL and the local_scan() function.
2116
211719. For the "mail" command in an Exim filter, no default was being set for
2118 the once_repeat time, causing a random time value to be used if "once" was
2119 specified. (If the value happened to be <= 0, no repeat happened.) The
2120 default is now 0s, meaning "never repeat". The "vacation" command was OK
2121 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2122 (I found it when inspecting the code).
2123
212420. There is now an overall timeout for performing a callout verification. It
2125 defaults to 4 times the callout timeout, which applies to individual SMTP
2126 commands during the callout. The overall timeout applies when there is more
2127 than one host that can be tried. The timeout is checked before trying the
2128 next host. This prevents very long delays if there are a large number of
2129 hosts and all are timing out (e.g. when the network connections are timing
2130 out). The value of the overall timeout can be changed by specifying an
2131 additional sub-option for "callout", called "maxwait". For example:
2132
2133 verify = sender/callout=5s,maxwait=20s
2134
213521. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2136 to the end before writing, but this should make it even safer).
2137
213822. Exim was forgetting that it had advertised PIPELINING for the second and
2139 subsequent messages on an SMTP connection. It was also not resetting its
2140 memory on STARTTLS and an internal HELO.
2141
214223. When Exim logs an SMTP synchronization error within a session, it now
2143 records whether PIPELINING has been advertised or not.
2144
214524. Added 3 instances of "(long int)" casts to time_t variables that were being
2146 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2147 rather than long int.
2148
214925. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2150
215126. Added the never_mail option to autoreply.
2152
2153
2154Exim version 4.41
2155-----------------
2156
2157 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2158 crash if the getsockname() call failed; this can happen if a connection is
2159 closed very soon after it is established. The problem was simply in the
2160 order in which certain operations were done, causing Exim to try to write
2161 to the SMTP stream before it had set up the file descriptor. The bug has
2162 been fixed by making things happen in the correct order.
2163
2164
2165Exim version 4.40
2166-----------------
2167
2168 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2169 before the connection was closed, thus losing the rejection response.
2170
2171 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2172 some early Solaris releases, but causes trouble in current releases where
2173 socklen_t is defined.
2174
2175 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2176 always exist.
2177
2178 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2179 configured.
2180
2181 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2182 that releasing the top of it at the end releases what was used for sub-
2183 expansions (unless the block got too big). However, discard this block if
2184 the first thing is a variable or header, so that we can use its block when
2185 it is dynamic (useful for very large $message_headers, for example).
2186
2187 6. Lookups now cache *every* query, not just the most recent. A new, separate
2188 store pool is used for this. It can be recovered when all lookup caches are
2189 flushed. Lookups now release memory at the end of their result strings.
2190 This has involved some general refactoring of the lookup sources.
2191
2192 7. Some code has been added to the store_xxx() functions to reduce the amount
2193 of flapping under certain conditions.
2194
2195 8. log_incoming_interface used to affect only the <= reception log lines. Now
2196 it causes the local interface and port to be added to several more SMTP log
2197 lines, for example "SMTP connection from", and rejection lines.
2198
2199 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2200
220110. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2202
220311. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2204 could be overwritten at the end of the current message (or the start of a
2205 new message if it was set in a HELO ACL). The value is now preserved for
2206 the duration of the SMTP connection.
2207
220812. If a transport had a headers_rewrite setting, and a matching header line
2209 contained an unqualified address, that address was qualified, even if it
2210 did not match any rewriting rules. The underlying bug was that the values
2211 of the flags that permit the existence of unqualified sender and recipient
2212 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2213 non-local messages, and by -bnq for local messages) were not being
2214 preserved with the message after it was received.
2215
221613. When Exim was logging an SMTP synchronization error, it could sometimes log
2217 "next input=" as part of the text comprising the host identity instead of
2218 the correct text. The code was using the same buffer for two different
2219 strings. However, depending on which order the printing function evaluated
2220 its arguments, the bug did not always show up. Under Linux, for example, my
2221 test suite worked just fine.
2222
222314. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2224 doesn't work with some older versions of Perl. It has been changed to "my",
2225 which in any case is probably the better facility to use.
2226
222715. A really picky compiler found some instances of statements for creating
2228 error messages that either had too many or two few arguments for the format
2229 string.
2230
223116. The size of the buffer for calls to the DNS resolver has been increased
2232 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2233 for addresses that have a lot of PTR records. This alleviates a problem; it
2234 does not fully solve it.
2235
223617. A dnsdb lookup for PTR records that receives more data than will fit in the
2237 buffer now truncates the list and logs the incident, which is the same
2238 action as happens when Exim is looking up a host name and its aliases.
2239 Previously in this situation something unpredictable would happen;
2240 sometimes it was "internal error: store_reset failed".
2241
224218. If a server dropped the connection unexpectedly when an Exim client was
2243 using GnuTLS and trying to read a response, the client delivery process
2244 crashed while trying to generate an error log message.
2245
224619. If a "warn" verb in an ACL added multiple headers to a message in a single
2247 string, for example:
2248
2249 warn message = H1: something\nH2: something
2250
2251 the text was added as a single header line from Exim's point of view
2252 though it ended up OK in the delivered message. However, searching for the
2253 second and subsequent header lines using $h_h2: did not work. This has been
2254 fixed. Similarly, if a system filter added multiple headers in this way,
2255 the routers could not see them.
2256
225720. Expanded the error message when iplsearch is called with an invalid key to
2258 suggest using net-iplsearch in a host list.
2259
226021. When running tests using -bh, any delays imposed by "delay" modifiers in
2261 ACLs are no longer actually imposed (and a message to that effect is
2262 output).
2263
226422. If a "gecos" field in a passwd entry contained escaped characters, in
2265 particular, if it contained a \" sequence, Exim got it wrong when building
2266 a From: or a Sender: header from that name. A second bug also caused
2267 incorrect handling when an unquoted " was present following a character
2268 that needed quoting.
2269
227023. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2271 was not being matched caselessly.
2272
227324. Arranged for all hyphens in the exim.8 source to be escaped with
2274 backslashes.
2275
227625. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2277 properly. Recipient callout cache records were still being keyed to include
2278 the sender, even when use_sender was set false. This led to far more
2279 callouts that were necessary. The sender is no longer included in the key
2280 when use_sender is false.
2281
228226. Added "control = submission" modifier to ACLs.
2283
228427. Added the ${base62d: operator to decode base 62 numbers.
2285
228628. dnsdb lookups can now access SRV records.
2287
228829. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2289 the configuration file.
2290
229130. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2292 (-v) mode. This makes the output for a verbose queue run more intelligible.
2293
229431. Added a use_postmaster feature to recipient callouts.
2295
229632. Added the $body_zerocount variable, containing the number of binary zero
2297 bytes in the message body.
2298
229933. The time of last modification of the "new" subdirectory is now used as the
2300 "mailbox time last read" when there is a quota error for a maildir
2301 delivery.
2302
230334. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2304
230535. Added +ignore_unknown as a special item in host lists.
2306
230736. Code for decoding IPv6 addresses in host lists is now included, even if
2308 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2309 address was recognized as an IP address, but was then not correctly decoded
2310 into binary, causing unexpected and incorrect effects when compared with
2311 another IP address.
2312
2313
2314Exim version 4.34
2315-----------------
2316
2317 1. Very minor rewording of debugging text in manualroute to say "list of
2318 hosts" instead of "hostlist".
2319
2320 2. If verify=header_syntax was set, and a header line with an unqualified
2321 address (no domain) and a large number of spaces between the end of the
2322 name and the colon was received, the reception process suffered a buffer
2323 overflow, and (when I tested it) crashed. This was caused by some obsolete
2324 code that should have been removed. The fix is to remove it!
2325
2326 3. When running in the test harness, delay a bit after writing a bounce
2327 message to get a bit more predictability in the log output.
2328
2329 4. Added a call to search_tidyup() just before forking a reception process. In
2330 theory, someone could use a lookup in the expansion of smtp_accept_max_
2331 per_host which, without the tidyup, could leave open a database connection.
2332
2333 5. Added the variables $recipient_data and $sender_data which get set from a
2334 lookup success in an ACL "recipients" or "senders" condition, or a router
2335 "senders" option, similar to $domain_data and $local_part_data.
2336
2337 6. Moved the writing of debug_print from before to after the "senders" test
2338 for routers.
2339
2340 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2341 problems for message scanning, either using a data ACL, or using
2342 local_scan() because the Received: header was not generated till after they
2343 were called (in order to set the time as the time of reception completion).
2344 I have revised the way this works. The header is now generated after the
2345 body is received, but before the ACL or local_scan() are called. After they
2346 are run, the timestamp in the header is updated.
2347
2348
2349Exim version 4.33
2350-----------------
2351
2352 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2353 before starting a queue runner without re-exec. This happened only when
2354 deliver_drop_privilege was set or when the Exim user was set to root. The
2355 effect of the bug was that timeouts during subsequent deliveries caused
2356 crashes instead of being properly handled. The handler is now left at its
2357 default (and expected) setting.
2358
2359 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2360 message, again when deliver_drop_privilege is set or Exim is run as root.
2361 The bug described in (1) was not present in this case, but the tidying up
2362 of the other signals was missing. I have made the two cases consistent.
2363
2364 3. The ignore_target_hosts setting on a manualroute router was being ignored
2365 for hosts that were looked up using the /MX notation.
2366
2367 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2368 in domain lists.
2369
2370 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2371 operated on the sender address. After changing the $sender_address to <>
2372 for the sender address verify, Exim was re-instated it as the original
2373 (before rewriting) address, but remembering that it had rewritten it, so it
2374 wasn't rewriting it again. This bug also had the effect of breaking the
2375 sender address verification caching when the sender address was rewritten.
2376
2377 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2378 This has been changed so that if the ip literal address matches
2379 ignore_target_hosts, the router declines.
2380
2381 7. Added expansion conditions match_domain, match_address, and match_local_
2382 part (NOT match_host).
2383
2384 8. The placeholder for the Received: header didn't have a length field set.
2385
2386 9. Added code to Exim itself and to exim_lock to test for a specific race
2387 condition that could lead to file corruption when using MBX delivery. The
2388 issue is with the lockfile that is created in /tmp. If this file is removed
2389 after a process has opened it but before that process has acquired a lock,
2390 there is the potential for a second process to recreate the file and also
2391 acquire a lock. This could lead to two Exim processes writing to the file
2392 at the same time. The added code performs the same test as UW imapd; it
2393 checks after acquiring the lock that its file descriptor still refers to
2394 the same named file.
2395
239610. The buffer for building added header lines was of fixed size, 8192 bytes.
2397 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2398 when Exim is built.
2399
240011. Added the smtp_active_hostname option. If used, this will typically be made
2401 to depend on the incoming interface address. Because $interface_address is
2402 not set up until the daemon has forked a reception process, error responses
2403 that can happen earlier (such as "too many connections") no longer contain
2404 a host name.
2405
240612. If an expansion in a condition on a "warn" statement fails because a lookup
2407 defers, the "warn" statement is abandoned, and the next ACL statement is
2408 processed. Previously this caused the whole ACL to be aborted.
2409
241013. Added the iplsearch lookup type.
2411
241214. Added ident_timeout as a log selector.
2413
241415. Added tls_certificate_verified as a log selector.
2415
241616. Added a global option tls_require_ciphers (compare the smtp transport
2417 option of the same name). This controls incoming TLS connections.
2418
241917. I finally figured out how to make tls_require_ciphers do a similar thing
2420 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2421 before starting the TLS session.
2422
242318. Tabs are now shown as \t in -bP output.
2424
242519. If the log selector return_path_on_delivery was set, Exim crashed when
2426 bouncing a message because it had too many Received: header lines.
2427
242820. If two routers both had headers_remove settings, and the first one included
2429 a superfluous trailing colon, the final name in the first list and the
2430 first name in the second list were incorrectly joined into one item (with a
2431 colon in the middle).
2432
2433
2434Exim version 4.32
2435-----------------
2436
2437 1. Added -C and -D options to the exinext utility, mainly to make it easier
2438 to include in the automated testing, but these could be helpful when
2439 multiple configurations are in use.
2440
2441 2. The exinext utility was not formatting the output nicely when there was
2442 an alternate port involved in the retry record key, nor when there was a
2443 message id as well (for retries that were specific to a specific message
2444 and a specific host). It was also confused by IPv6 addresses, because of
2445 the additional colons they contain. I have fixed the IPv4 problem, and
2446 patched it up to do a reasonable job for IPv6.
2447
2448 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2449 delivery, the log line now contains "pipelined" if PIPELINING was used.
2450
2451 4. An SMTP transport process used to panic and die if the bind() call to set
2452 an explicit outgoing interface failed. This has been changed; it is now
2453 treated in the same way as a connect() failure.
2454
2455 5. A reference to $sender_host_name in the part of a conditional expansion
2456 that was being skipped was still causing a DNS lookup. This no longer
2457 occurs.
2458
2459 6. The def: expansion condition was not recognizing references to header lines
2460 that used bh_ and bheader_.
2461
2462 7. Added the _cache feature to named lists.
2463
2464 8. The code for checking quota_filecount in the appendfile transport was
2465 allowing one more file than it should have been.
2466
2467 9. For compatibility with Sendmail, the command line option
2468
2469 -prval:sval
2470
2471 is equivalent to
2472
2473 -oMr rval -oMs sval
2474
2475 and sets the incoming protocol and host name (for trusted callers). The
2476 host name and its colon can be omitted when only the protocol is to be set.
2477 Note the Exim already has two private options, -pd and -ps, that refer to
2478 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2479 "s", but I don't think that's a major issue.
2480
248110. A number of refactoring changes to the code, none of which should affect
2482 Exim's behaviour:
2483
2484 (a) The number of logging options was getting close to filling up the
2485 32-bit word that was used as a bit map. I have split them into two classes:
2486 those that are passed in the argument to log_write(), and those that are
2487 only ever tested independently outside of that function. These are now in
2488 separate 32-bit words, so there is plenty of room for expansion again.
2489 There is no change in the user interface or the logging behaviour.
2490
2491 (b) When building, for example, log lines, the code previously used a
2492 macro that called string_cat() twice, in order to add two strings. This is
2493 not really sufficiently general. Furthermore, there was one instance where
2494 it was actually wrong because one of the argument was used twice, and in
2495 one call a function was used. (As it happened, calling the function twice
2496 did not affect the overall behaviour.) The macro has been replaced by a
2497 function that can join an arbitrary number of extra strings onto a growing
2498 string.
2499
2500 (c) The code for expansion conditions now uses a table and a binary chop
2501 instead of a serial search (which was left over from when there were very
2502 few conditions). Also, it now recognizes conditions like "pam" even when
2503 the relevant support is not compiled in: a suitably worded error message is
2504 given if an attempt is made to use such a condition.
2505
250611. Added ${time_interval:xxxxx}.
2507
250812. A bug was causing one of the ddress fields not to be passed back correctly
2509 from remote delivery subprocesses. The field in question was not being
2510 subsequently used, so this caused to problems in practice.
2511
251213. Added new log selectors queue_time and deliver_time.
2513
251414. Might have fixed a bug in maildirsizefile handling that threw up
2515 "unexpected character" debug warnings, and recalculated the data
2516 unnecessarily. In any case, I expanded the warning message to give more
2517 information.
2518
251915. Added the message "Restricted characters in address" to the statements in
2520 the default ACL that block characters like @ and % in local parts.
2521
252216. Change 71 for release 4.31 proved to be much less benign that I imagined.
2523 Three changes have been made:
2524
2525 (a) There was a serious bug; a negative response to MAIL caused the whole
2526 recipient domain to be cached as invalid, thereby blocking all messages
2527 to all local parts at the same domain, from all senders. This bug has
2528 been fixed. The domain is no longer cached after a negative response to
2529 MAIL if the sender used is not empty.
2530
2531 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2532 been restored.
2533
2534 (c) A new callout option, "use_sender" has been added for people who want
2535 the modified behaviour.
2536
2537
2538Exim version 4.31
2539-----------------
2540
2541 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
2542 Larry Rosenman.
2543
2544 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
2545 indeed breaks things for older releases.
2546
2547 3. Added additional logging to the case where there is a problem reading data
2548 from a filter that is running in a subprocess using a pipe, in order to
2549 try to track down a specific problem.
2550
2551 4. Testing facility fudge: when running in the test harness and attempting
2552 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
2553 getting "No route to host". Convert this to a timeout.
2554
2555 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
2556 warning.
2557
2558 6. Some OS don't have socklen_t but use size_t instead. This affects the
2559 fifth argument of getsockopt() amongst other things. This is now
2560 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
2561 can be set for individual OS. I have set it for SunOS5, OSF1, and
2562 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
2563 some earlier ones do not.
2564
2565 7. Change 4.30/15 was not doing the test caselessly.
2566
2567 8. The standard form for an IPv6 address literal was being rejected by address
2568 parsing in, for example, MAIL and RCPT commands. An example of this kind of
2569 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
2570 this, as well as the form without the "IPv6" on the front (but only when
2571 address literals are enabled, of course).
2572
2573 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
2574
257510. Exim crashed if a message with an empty sender address specified by -f
2576 encountered a router with an errors_to setting. This could be provoked only
2577 by a command such as
2578
2579 exim -f "" ...
2580
2581 where an empty string was supplied; "<>" did not hit this bug.
2582
258311. Installed PCRE release 4.5.
2584
258512. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
2586 remained set. It is now erased.
2587
258813. exiqgrep wasn't working on MacOS X because it didn't correctly compute
2589 times from message ids (which are base 36 rather than the normal 62).
2590
259114. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
2592 were being counted as actual protocol errors, and logged if the log
2593 selector +smtp_protocol_error was set. One cannot be perfect in this test,
2594 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
2595 and DATA following a set of rejected RCPTs do not count as protocol errors.
2596 In other words, Exim assumes they were pipelined, though this may not
2597 actually be the case. Of course, in all cases the client gets an
2598 appropriate error code.
2599
260015. If a lookup fails in an ACL condition, a message about the failure may
2601 be available; it is used if testing the ACL cannot continue, because most
2602 such messages specify what the cause of the deferral is. However, some
2603 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
2604 that caused an old message to be retained and used if a later statement
2605 caused a defer, replacing the real cause of the deferral.
2606
260716. If an IP address had so many PTR records that the DNS lookup buffer
2608 was not large enough to hold them, Exim could crash while trying to process
2609 the truncated data. It now detects and logs this case.
2610
261117. Further to 4.21/58, another change has been made: if (and only if) the
2612 first line of a message (the first header line) ends with CRLF, a bare LF
2613 in a subsequent header line has a space inserted after it, so as not to
2614 terminate the header.
2615
261618. Refactoring: tidied an ugly bit of code in appendfile that copied data
2617 unnecessarily, used atoi() instead of strtol(), and didn't check the
2618 termination when getting file sizes from file names by regex.
2619
262019. Completely re-implemented the support for maildirsize files, in the light
2621 of a number of problems with the previous contributed implementation
2622 (4.30/29). In particular:
2623
2624 . If the quota is zero, the maildirsize file is maintained, but no quota is
2625 imposed.
2626
2627 . If the maildir directory does not exist, it is created before any attempt
2628 to write a maildirsize file.
2629
2630 . The quota value in the file is just a cache; if the quota is changed in
2631 the transport, the new value overrides.
2632
2633 . A regular expression is available for excluding directories from the
2634 count.
2635
263620. The autoreply transport checks the characters in options that define the
2637 message's headers; it allows continued headers, but it was checking with
2638 isspace() after an embedded newline instead of explicitly looking for a
2639 space or a tab.
2640
264121. If all the "regular" hosts to which an address was routed had passed their
2642 expiry times, and had not reached their retry times, the address was
2643 bounced, even if fallback hosts were defined. Now Exim should go on to try
2644 the fallback hosts.
2645
264622. Increased buffer sizes in the callout code from 1024 to 4096 to match the
2647 equivalent code in the SMTP transport. Some hosts send humungous responses
2648 to HELO/EHLO, more than 1024 it seems.
2649
265023. Refactoring: code in filter.c used (void *) for "any old type" but this
2651 gives compiler warnings in some environments. I've now done it "properly",
2652 using a union.
2653
265424. The replacement for inet_ntoa() that is used with gcc on IRIX systems
2655 (because of problems with the built-in one) was declared to return uschar *
2656 instead of char *, causing compiler failure.
2657
265825. Fixed a file descriptor leak when processing alias/forward files.
2659
266026. Fixed a minor format string issue in dbfn.c.
2661
266227. Typo in exim.c: ("dmbnz" for "dbmnz").
2663
266428. If a filter file refered to $h_xxx or $message_headers, and the headers
2665 contained RFC 2047 "words", Exim's memory could, under certain conditions,
2666 become corrupted.
2667
266829. When a sender address is verified, it is cached, to save repeating the test
2669 when there is more than one recipient in a message. However, when the
2670 verification involves a callout, it is possible for different callout
2671 options to be set for different recipients. It is too complicated to keep
2672 track of this in the cache, so now Exim always runs a verification when a
2673 callout is required, relying on the callout cache for the optimization.
2674 The overhead is duplication of the address routing, but this should not be
2675 too great.
2676
267730. Fixed a bug in callout caching. If a RCPT command caused the sender address
2678 to be verified with callout=postmaster, and the main callout worked but the
2679 postmaster check failed, the verification correctly failed. However, if a
2680 subsequent RCPT command asked for sender verification *without* the
2681 postmaster check, incorrect caching caused this verification also to fail,
2682 incorrectly.
2683
268431. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
2685 it was not caching the DNS options (qualify_single, search_parents) that
2686 were used when the lookup failed. A subsequent lookup with different
2687 options therefore always gave the same answer, though there were cases
2688 where it should not have. (Example: a "domains = !$mx_any" option on a
2689 dnslookup router: the "domains" option is always processed without any
2690 widening, but the router might have qualify_single set.) Now Exim uses the
2691 cached value only when the same options are set.
2692
269332. Added John Jetmore's "exipick" utility to the distribution.
2694
269533. GnuTLS: When an attempt to start a TLS session fails for any reason other
2696 than a timeout (e.g. a certificate is required, and is not provided), an
2697 Exim server now closes the connection immediately. Previously it waited for
2698 the client to close - but if the client is SSL, it seems that they each
2699 wait for each other, leading to a delay before one of them times out.
2700
270134: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
2702 maintained 0.8.x compatibility because I don't think many are using it, and
2703 it is clearly obsolete.
2704
270535. Added TLS support for CRLs: a tls_crl global option and one for the smtp
2706 transport.
2707
270836. OpenSSL: $tls_certificate_verified was being set to 1 even if the
2709 client certificate was expired. A simple patch fixes this, though I don't
2710 understand the full logic of why the verify callback is called multiple
2711 times.
2712
271337. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
2714 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
2715 which causes problems with some clients (such as the Certicom SSL Plus
2716 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
2717 disables the coutermeasure allowing Eudora to connect."
2718
271938. Exim was not checking that a write() to a log file succeeded. This could
2720 lead to Bad Things if a log got too big, in particular if it hit a file
2721 size limit. Exim now panics and dies if it cannot write to a log file, just
2722 as it does if it cannot open a log file.
2723
272439. Modified OS/Makefile-Linux so that it now contains
2725
2726 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
2727
2728 The two -D definitions ensure that Exim is compiled with large file
2729 support, which makes it possible to handle log files that are bigger than
2730 2^31.
2731
273240. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
2733 instance) a domain was checked against a named list that involved a lookup,
2734 causing $domain_data to be set, then another domain was checked against the
2735 same list, then the first domain was re-checked, the value of $domain_data
2736 after the final check could be wrong. In particular, if the second check
2737 failed, it could be set empty. This bug probably also applied to
2738 $localpart_data.
2739
274041. The strip_trailing_dot option was not being applied to the address given
2741 with the -f command-line option.
2742
274342. The code for reading a message's header from the spool was incrementing
2744 $received_count, but never initializing it. This meant that the value was
2745 incorrect (doubled) while delivering a message in the same process in which
2746 it was received. In the most common configuration of Exim, this never
2747 happens - a fresh exec is done - but it can happen when
2748 deliver_drop_privilege is set.
2749
275043. When Exim logs an SMTP synchronization error - client data sent too soon -
2751 it now includes up to 150 characters of the unexpected data in the log
2752 line.
2753
275444. The exim_dbmbuild utility uses fixed size buffers for reading input lines
2755 and building data strings. The size of both of these buffers was 10 000
2756 bytes - far larger than anybody would *ever* want, thought I. Needless to
2757 say, somebody hit the limit. I have increased the maximum line length to
2758 20 000 and the maximum data length of concatenated lines to 100 000. I have
2759 also fixed two bugs, because there was no checking on these buffers. Tsk,
2760 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
2761 buffer is too small.
2762
276345. The exim_dbmbuild utility did not support quoted keys, as Exim does in
2764 lsearch lookups. Now it does.
2765
276646. When parsing a route_list item in a manualroute router, a fixed-length
2767 buffer was used for the list of hosts. I made this 1024 bytes long,
2768 thinking that nobody would ever have a list of hosts that long. Wrong.
2769 Somebody had a whole pile of complicated expansion conditions, and the
2770 string was silently truncated, leading to an expansion error. It turns out
2771 that it is easier to change to an unlimited length (owing to other changes
2772 that have happened since this code was originally written) than to build
2773 structure for giving a limitation error. The length of the item that
2774 expands into the list of hosts is now unlimited.
2775
277647. The lsearch lookup could not handle data where the length of text line was
2777 more than 4095 characters. Such lines were truncated, leading to shortened
2778 data being returned. It should now handle lines of any length.
2779
278048. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
2781 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
2782 ACL").
2783
278449. Cosmetic tidy to scripts like exicyclog that are generated by globally
2785 replacing strings such as BIN_DIRECTORY in a source file: the replacement
2786 no longer happens in comment lines. A list of replacements is now placed
2787 at the head of all of the source files, except those whose only change is
2788 to replace PERL_COMMAND in the very first #! line.
2789
279050. Replaced the slow insertion sort in queue.c, for sorting the list of
2791 messages on the queue, with a bottom-up merge sort, using code contributed
2792 by Michael Haardt. This should make operations like -bp somewhat faster on
2793 large queues. It won't affect queue runners, except when queue_run_in_order
2794 is set.
2795
279651. Installed eximstats 1.31 in the distribution.
2797
279852. Added support for SRV lookups to the dnslookup router.
2799
280053. If an ACL referred to $message_body or $message_body_end, the value was not
2801 reset for any messages that followed in the same SMTP session.
2802
280354. The store-handling optimization for building very long strings was not
2804 differentiating between the different store pools. I don't think this
2805 actually made any difference in practice, but I've tidied it.
2806
280755. While running the routers to verify a sender address, $sender_address
2808 was still set to the sender address. This is wrong, because when routing to
2809 send a bounce to the sender, it would be empty. Therefore, I have changed
2810 it so that, while verifying a sender address, $sender_address is set to <>.
2811 (There is no change to what happens when verifying a recipient address.)
2812
281356. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
2814 target A or AAAA records (if not already returned) without resetting the
2815 qualify_single or search_parents options of the DNS resolver. These are
2816 inappropriate in this case because the targets of MX and SRV records must
2817 be FQDNs. A broken DNS record could cause trouble if it happened to have a
2818 target that, when qualified, matched something in the local domain. These
2819 two options are now turned off when doing these lookups.
2820
282157. It seems that at least some releases of Reiserfs (which does not have the
2822 concept of a fixed number of inodes) returns zero and not -1 for the
2823 number of available inodes. This interacted badly with check_spool_inodes,
2824 which assumed that -1 was the "no such thing" setting. What I have done is
2825 to check that the total number of inodes is greater than zero before doing
2826 the test of how many are available.
2827
282858. When a "warn" ACL statement has a log_message modifier, the message is
2829 remembered, and not repeated. This is to avoid a lot of repetition when a
2830 message has many recipients that cause the same warning to be written.
2831 Howewer, Exim was preserving the list of already written lines for an
2832 entire SMTP session, which doesn't seem right. The memory is now reset if a
2833 new message is started.
2834
283559. The "rewrite" debugging flag was not showing the result of rewriting in the
2836 debugging output unless log_rewrite was also set.
2837
283860. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
2839 of (int)(handle) when we know that handle contains (void *)(-1).
2840
284161. The Exim daemon panic-logs an error return when it closes the incoming
2842 connection. However "connection reset by peer" seems to be common, and
2843 isn't really an error worthy of noting specially, so that particular error
2844 is no long logged.
2845
284662. When Exim is trying to find all the local interfaces, it used to panic and
2847 die if the ioctl to get the interface flags failed. However, it seems that
2848 on at least one OS (Solaris 9) it is possible to have an interface that is
2849 included in the list of interfaces, but for which you get a failure error
2850 for this call. This happens when the interface is not "plumbed" into a
2851 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
2852 failure of the "get flags" call assumes that the interface is down.
2853
285463. Added a ${eval10: operator, which assumes all numbers are decimal. This
2855 makes life easier for people who are doing arithmetic on fields extracted
2856 from dates, where you often get leading zeros that should not be
2857 interpreted as octal.
2858
285964. Added qualify_domain to the redirect router, to override the global
2860 setting.
2861
286265. If a pathologically long header line contained very many addresses (the
2863 report of this problem mentioned 10 000) and each of them was rewritten,
2864 Exim could use up a very large amount of memory. (It kept on making new
2865 copies of the header line as it rewrote, and never released the old ones.)
2866 At the expense of a bit more processing, the header rewriting function has
2867 been changed so that it no longer eats memory in this way.
2868
286966. The generation of the Received: header has been moved from the time that a
2870 message starts to be received, to the time that it finishes. The timestamp
2871 in the Received: header should now be very close to that of the <= log
2872 line. There are two side-effects of this change:
2873
2874 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
2875 logged header lines no longer include the local Received: line, because
2876 it has not yet been created. The same applies to a copy of the message
2877 that is returned to a non-SMTP sender when a message is rejected.
2878
2879 (b) When a filter file is tested using -bf, no additional Received: header
2880 is added to the test message. After some thought, I decided that this
2881 is a bug fix.
2882
2883 This change does not affect the value of $received_for. It is still set
2884 after address rewriting, but before local_scan() is called.
2885
288667. Installed the latest Cygwin-specific files from the Cygwin maintainer.
2887
288868. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
2889 gave an unhelpful panic error message, and a defer error. I have managed to
2890 change this behaviour so that it now rejects any supplied certificate,
2891 which seems right, as the list of acceptable certificates is empty.
2892
289369. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
2894 gave an unhelpful defer error. I have not managed to make this reject any
2895 supplied certificates, but the error message it gives is "no certificate
2896 supplied", which is not helpful.
2897
289870. exigrep's output now also includes lines that are not associated with any
2899 message, but which match the given pattern. Implemented by a patch from
2900 Martin Sluka, which also tidied up the Perl a bit.
2901
290271. Recipient callout verification, like sender verification, was using <> in
2903 the MAIL FROM command. This isn't really the right thing, since the actual
2904 sender may affect whether the remote host accepts the recipient or not. I
2905 have changed it to use the actual sender in the callout; this means that
2906 the cache record is now keyed on a recipient/sender pair, not just the
2907 recipient address. There doesn't seem to be a real danger of callout loops,
2908 since a callout by the remote host to check the sender would use <>.
2909 [SEE ABOVE: changed after hitting problems.]
2910
291172. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
2912 temporary errors. However, in the case of such a code being given after
2913 the end of a data transmission (i.e. after ".") Exim was failing to write
2914 a retry record for the message. (Yes, there was some broken host that was
2915 actually sending 8xx at this point.)
2916
291773. An unknown lookup type in a host list could cause Exim to panic-die when
2918 the list was checked. (An example that provoked this was putting <; in the
2919 middle of a list instead of at the start.) If this happened during a DATA
2920 ACL check, a -D file could be left lying around. This kind of configuration
2921 error no longer causes Exim to die; instead it causes a defer errror. The
2922 incident is still logged to the main and panic logs.
2923
292474. Buglet left over from Exim 3 conversion. The message "too many messages
2925 in one connection" was written to the rejectlog but not the mainlog, except
2926 when address rewriting (yes!) was being logged.
2927
292875. Added write_rejectlog option.
2929
293076. When a system filter was run not as root (that is, when system_filter_user
2931 was set), the values of the $n variables were not being returned to the
2932 main process; thus, they were not subsequently available in the $sn
2933 variables.
2934
293577. Added +return_path_on_delivery log selector.
2936
293778. A connection timeout was being treated differently from recipients deferred
2938 when testing hosts_max_try with a message that was older than the host's
2939 retry timeout. (The host should not be counted, thus allowing all hosts to
2940 be tried at least once before bouncing.) This may have been the cause of an
2941 occasionally reported bug whereby a message would remain on the queue
2942 longer than the retry timeout, but would be bounced if a delivery was
2943 forced. I say "may" because I never totally pinned down the problem;
2944 setting up timeout/retry tests is difficult. See also the next item.
2945
294679. The ultimate address timeout was not being applied to errors that involved
2947 a combination of host plus message (for example, a timeout on a MAIL
2948 command). When an address resolved to a number of possible hosts, and they
2949 were not all tried for each delivery (e.g. because of hosts_max_try), a
2950 message could remain on the queue longer than the retry timeout.
2951
295280. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
2953 Haardt.
2954
295581. Fixed an obscure SMTP outgoing bug which required at least the following
2956 conditions: (a) there was another message waiting for the same server;
2957 (b) the server returned 5xx to all RCPT commands in the first message so
2958 that the message was not completed; (c) the server dropped the connection
2959 or gave a negative response to the RSET that Exim sends to abort the
2960 transaction. The observed case was a dropped connection after DATA that had
2961 been sent in pipelining mode. That is, the server had advertised PIPELINING
2962 but was not implementing it correctly. The effect of the bug was incorrect
2963 behaviour, such as trying another host, and this could lead to a crash.
2964
2965
2966Exim version 4.30
2967-----------------
2968
2969 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
2970 and daemon.c were passed as pointers to ints; they should have been
2971 pointers to socklen_t variables (which are typically unsigned ints).
2972
2973 2. Some signed/unsigned type warnings in the os.c file for Linux have been
2974 fixed.
2975
2976 3. Fixed a really odd bug that affected only the testing scheme; patching a
2977 certain fixed string in the binary changed the value of another string that
2978 happened to be identical to the end of the original first string.
2979
2980 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
2981 name", it returns that address as the IP address. On some operating
2982 systems (e.g. Solaris), it also passes back the IP address string as the
2983 "host name". However, on others (e.g. Linux), it passes back an empty
2984 string. Exim wasn't checking for this, and was changing the host name to an
2985 empty string, assuming it had been canonicized.
2986
2987 5. Although rare, it is permitted to have more than one PTR record for a given
2988 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
2989 all the names associated with an address, because they do in Solaris.
2990 However, it seems that they do not in Linux for data that comes from the
2991 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
2992 I found this out when I moved to a new Linux workstation and tried to run
2993 the Exim test suite.
2994
2995 To get round this problem I have changed the code so that it now does its
2996 own call to the DNS to look up PTR records when searching for a host name.
2997 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
2998 addresses that are only in /etc/hosts are still found.
2999
3000 This behaviour is, however, controlled by an option called host_lookup_
3001 order, which defaults to "bydns:byaddr". If people want to use the other
3002 order, or indeed, just use one or the other means of lookup, they can
3003 specify it in this variable.
3004
3005 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3006 some operating systems, this comes back from gethostbyaddr() as an empty
3007 string, and this is what Exim used to test for. However, it seems that in
3008 other systems, "." is yielded. Exim now tests for this case too.
3009
3010 7. The values of check_spool_space and check_log_space are now held internally
3011 as a number of kilobytes instead of an absolute number of bytes. If a
3012 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3013 kilobyte. This means that much larger values can be stored.
3014
3015 8. Exim monitor: an attempt to get the action menu when not actually pointing
3016 at a message produces an empty menu entitled "No message selected". This
3017 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3018 no entries in it ("Shell widget menu has zero width and/or height"). So I
3019 have added a single, blank menu entry in this case.
3020
3021 9. Added ${quote_local_part.
3022
302310. MIME decoding is now applied to the contents of Subject: header lines when
3024 they are logged.
3025
302611. Now that a reference to $sender_host_address automatically causes a reverse
3027 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3028 host lookup before query-style lookups in lists that might use this
3029 variable. This has therefore been abolished, and the "net-" prefix is no
3030 longer necessary for query-style lookups.
3031
303212. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3033 have been a typo for LFLAGS, so it has been changed.
3034
303513. The install script calls Exim with "-C /dev/null" in order to find the
3036 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3037 to be output. Howeve, since Exim outputs its version number before the
3038 error, it didn't break the script. It just looked ugly. I fixed this by
3039 always allowing "-C /dev/null" if the caller is root.
3040
304114. Ignore overlarge ACL variable number when reading spool file - insurance
3042 against a later release with more variables having written the file.
3043
304415. The standard form for an IPv6 address literal was being rejected by EHLO.
3045 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3046 this, as well as the form without the "IPv6" on the front.
3047
304816. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3049 OS/Makefile-Darwin file.
3050
305117. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3052 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3053
305418. After change 4.21/52, "%ld" was used to format the contents of the $inode
3055 variable. However, some OS use ints for inodes. I've added cast to long int
3056 to get rid of the compiler warning.
3057
305819. I had forgotten to lock out "/../" in configuration file names when
3059 ALT_CONFIG_PREFIX was set.
3060
306120. Routers used for verification do not need to specify transports. However,
3062 if such a router generated a host list, and callout was configured, Exim
3063 crashed, because it could not find a port number from the (non-existent)
3064 transport. It now assumes port 25 in this circumstance.
3065
306621. Added the -t option to exigrep.
3067
306822. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3069 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3070 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3071 them is set, LOOKUP_LSEARCH is forced.
3072
307323. "exim -bV" now outputs a list of lookups that are included in the binary.
3074
307524. Added sender and host information to the "rejected by local_scan()" log
3076 line; previously there was no indication of these.
3077
307825. Added .include_if_exists.
3079
308026. Change 3.952/11 added an explicit directory sync on top of a file sync for
3081 Linux. It turns out that not all file systems support this. Apparently some
3082 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3083 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3084 not supported on the file descriptor, is now ignored when Exim is trying to
3085 sync a directory. This applies only to Linux.
3086
308727. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3088
308928. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3090 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3091 this.
3092
309329. Added support for maildirsize files from supplied patch (modified a bit).
3094
309530. The use of :fail: followed by an empty string could lead Exim to respond to
3096 sender verification failures with (e.g.):
3097
3098 550 Verification failed for <xxx>
3099 550 Sender verify failed
3100
3101 where the first response line was missing the '-' that indicates it is not
3102 the final line of the response.
3103
310431. The loop for finding the name of the user that called Exim had a hardwired
3105 limit of 10; it now uses the value of finduser_retries, which is used for
3106 all other user lookups.
3107
310832. Added $received_count variable, available in data and not_smtp ACLs, and at
3109 delivery time.
3110
311133. Exim was neglecting to zero errno before one call of strtol() when
3112 expanding a string and expecting an integer value. On some systems this
3113 resulted in spurious "integer overflow" errors. Also, it was casting the
3114 result into an int without checking.
3115
311634. Testing for a connection timeout using "timeout_connect" in the retry rules
3117 did not work. The code looks as if it has *never* worked, though it appears
3118 to have been documented since at least releast 1.62. I have made it work.
3119
312035. The "timeout_DNS" error in retry rules, also documented since at least
3121 1.62, also never worked. As it isn't clear exactly what this means, and
3122 clearly it isn't a major issue, I have abolished the feature by treating it
3123 as "timeout", and writing a warning to the main and panic logs.
3124
312536. The display of retry rules for -brt wasn't always showing the error code
3126 correctly.
3127
312837. Added new error conditions to retry rules: timeout_A, timeout_MX,
3129 timeout_connect_A, timeout_connect_MX.
3130
313138. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3132 to the empty sender.
3133
313439. The daemon was not analysing the content of -oX till after it had closed
3135 stderr and disconnected from the controlling terminal. This meant that any
3136 syntax errors were only noted on the panic log, and the return code from
3137 the command was 0. By re-arranging the code a little, I've made the
3138 decoding happen first, so such errors now appear on stderr, and the return
3139 code is 1. However, the actual setting up of the sockets still happens in
3140 the disconnected process, so errors there are still only recorded on the
3141 panic log.
3142
314340. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3144 connections (as happens on some IP stacks) was logged at start up time as
3145 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3146 it from "IPv6 and IPv4", which means that two separate sockets are being
3147 used.
3148
314941. The debug output for gethostbyname2() or getipnodebyname() failures now
3150 says whether AF_INET or AF_INET6 was passed as an argument.
3151
315242. Exiwhat output was messed up when time zones were included in log
3153 timestamps.
3154
315543. Exiwhat now gives more information about the daemon's listening ports,
3156 and whether -tls-on-connect was used.
3157
315844. The "port" option of the smtp transport is now expanded.
3159
316045. A "message" modifier in a "warn" statement in a non-message ACL was being
3161 silently ignored. Now an error message is written to the main and panic
3162 logs.
3163
316446. There's a new ACL modifier called "logwrite" which writes to a log file
3165 as soon as it is encountered.
3166
316747. Added $local_user_uid and $local_user_gid at routing time.
3168
316948. Exim crashed when trying to verify a sender address that was being
3170 rewritten to "<>".
3171
317249. Exim was recognizing only a space character after ".include". It now also
3173 recognizes a tab character.
3174
317550. Fixed several bugs in the Perl script that creates the exim.8 man page by
3176 extracting the relevant information from the specification. The man page no
3177 longer contains scrambled data for the -d option, and I've added a section
3178 at the front about calling Exim under different names.
3179
318051. Added "extra_headers" argument to the "mail" command in filter files.
3181
318252. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
3183 crash.
3184
318553. Installed eximstats 1.29.
3186
318754. Added transport_filter_timeout as a generic transport option.
3188
318955. Exim no longer adds an empty Bcc: header to messages that have no To: or
3190 Cc: header lines. This was required by RFC 822, but it not required by RFC
3191 2822.
3192
319356. Exim used to add From:, Date:, and Message-Id: header lines to any
3194 incoming messages that did not have them. Now it does so only if the
3195 message originates locally, that is, if there is no associated remote host
3196 address. When Resent- header lines are present, this applies to the Resent-
3197 lines rather than the non-Resent- lines.
3198
319957. Drop incoming SMTP connection after too many syntax or protocol errors. The
3200 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
3201
320258. Messages for configuration errors now include the name of the main
3203 configuration file - useful now that there may be more than one file in a
3204 list (.included file names were always shown).
3205
320659. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
3207 for those rare installations that do not start the daemon as root or run it
3208 setuid root. I've cut out the call to initgroups() if the daemon is not
3209 root at that time.
3210
321160. The Exim user and group can now be bound into the binary as text strings
3212 that are looked up at the start of Exim's processing.
3213
321461. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
3215
321662. Added $mailstore_basename variable.
3217
321863. Installed patch to sieve.c from Michael Haardt.
3219
322064. When Exim failed to open the panic log after failing to open the main log,
3221 the original message it was trying to log was written to stderr and debug
3222 output, but if they were not available (the usual case in production), it
3223 was lost. Now it is written to syslog before the two lines that record the
3224 failures to open the logs.
3225
322665. Users' Exim filters run in subprocesses under the user's uid. It is
3227 possible for a "deliver" command or an alias in a "personal" command to
3228 provoke an address rewrite. If logging of address rewriting is configured,
3229 this fails because the process is not running as root or exim. There may be
3230 a better way of dealing with this, but for the moment (because 4.30 needs
3231 to be released), I have disabled address rewrite logging when running a
3232 filter in a non-root, non-exim process.
3233
3234
3235Exim version 4.24
3236-----------------
3237
3238 1. The buildconfig auxiliary program wasn't quoting the value set for
3239 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
3240 not defined. This bug was masked in 4.22 by the effect that was fixed in
3241 change 4.23/1.
3242
3243 2. Some messages that were rejected after a message id was allocated were
3244 shown as "incomplete" by exigrep. It no longer does this for messages that
3245 are rejected by local_scan() or the DATA or non-SMTP ACLs.
3246
3247 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
3248 have allow_domain_literals set, the ID did not get logged in the <= line.
3249 Domain literals are now always recognized in Message-ID: header lines.
3250
3251 4. The first argument for a ${extract expansion item is the key name or field
3252 number. Leading and trailing spaces in this item were not being ignored,
3253 causing some misleading effects.
3254
3255 5. When deliver_drop_privilege was set, single queue runner processes started
3256 manually (i.e. by the command "exim -q") or by the daemon (which uses the
3257 same command in the process it spins off) were not dropping privilege.
3258
3259 6. When the daemon running as "exim" started a queue runner, it always
3260 re-executed Exim in the spun-off process. This is a waste of effort when
3261 deliver_drop_privilege is set. The new process now just calls the
3262 queue-runner function directly.
3263
3264
3265Exim version 4.23
3266-----------------
3267
3268 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
3269 HEADERS_CHARSET.
3270
3271 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
3272 ignored. Though the use of -oP was forcing the writing of a pid file, it
3273 was always written to the default place.
3274
3275 3. If the message "no IP address found for host xxxx" is generated during
3276 incoming verification, it is now followed by identification of the incoming
3277 connection (so you can more easily find what provoked it).
3278
3279 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
3280
3281 5. Added some features to "harden" Exim a bit more against certain attacks:
3282
3283 (a) There is now a build-time option called FIXED_NEVER_USERS that can
3284 be put in Local/Makefile. This is like the never_users runtime option,
3285 but it cannot be overridden. The default setting is "root".
3286
3287 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
3288 prefix string with which any file named in a -C command line option
3289 must start.
3290
3291 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
3292 is retained for -C and -D only if the caller of Exim is root. Without
3293 it, the exim user may also use -C and -D and retain privilege.
3294
3295 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
3296 command line option is disabled.
3297
3298 6. Macro names set by the -D option must start with an upper case letter, just
3299 like macro names defined in the configuration file.
3300
3301 7. Added "dereference=" facility to LDAP.
3302
3303 8. Two instances of the typo "uknown" in the source files are fixed.
3304
3305 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
3306 the Configure-Makefile script screwed up while processing it.
3307
330810. Incorporated PCRE 4.4.
3309
331011. The SMTP synchronization check was not operating right at the start of an
3311 SMTP session. For example, it could not catch a HELO sent before the client
3312 waited for the greeting. There is now a check for outstanding input at the
3313 point when the greeting is written. Because of the duplex, asynchronous
3314 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
3315 way, but not yet received, when the check is performed.
3316
331712. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
3318 on TCP/IP sockets, because this apparently causes some broken clients to
3319 timeout.
3320
332113. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
3322 unchanged) from the Cygwin maintainer.
3323
332414. The code for -bV that shows what is in the binary showed "mbx" when maildir
3325 was supported instead of testing for mbx. Effectively a typo.
3326
332715. The spa authenticator server code was not checking that the input it
3328 received was valid base64.
3329
333016. The debug output line for the "set" modifier in ACLs was not showing the
3331 name of the variable that was being set.
3332
333317. Code tidy: the variable type "vtype_string" was never used. Removed it.
3334
333518. Previously, a reference to $sender_host_name did not cause a DNS reverse
3336 lookup on its own. Something else was needed to trigger the lookup. For
3337 example, a match in host_lookup or the need for a host name in a host list.
3338 Now, if $sender_host_name is referenced and the host name has not yet been
3339 looked up, a lookup is performed. If the lookup fails, the variable remains
3340 empty, and $host_lookup_failed is set to "1".
3341
334219. Added "eqi" as a case-independent comparison operator.
3343
334420. The saslauthd authentication condition could segfault if neither service
3345 nor realm was specified.
3346
334721. If an overflowing value such as "2048M" was set for message_size_limit, the
3348 error message that was logged was misleading, and incoming SMTP
3349 connections were dropped. The message is now more accurate, and temporary
3350 errors are given to SMTP connections.
3351
335222. In some error situations (such as 21 above) Exim rejects all SMTP commands
3353 (except RSET) with a 421 error, until QUIT is received. However, it was
3354 failing to send a response to QUIT.
3355
335623. The HELO ACL was being run before the code for helo_try_verify_hosts,
3357 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
3358 ACL is now run after the helo_try_verify_hosts code.
3359
336024. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
3361 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
3362 case-independent, so other case variants are also recognized). Apparently
3363 some systems use these upper case variants.
3364
336525. If more than two messages were waiting for the same host, and a transport
3366 filter was specified for the transport, Exim sent two messages over the
3367 same TCP/IP connection, and then failed with "socket operation on non-
3368 socket" when it tried to send the third.
3369
337026. Added Exim::debug_write and Exim::log_write for embedded Perl use.
3371
337227. The extern definition of crypt16() in expand.c was not being excluded when
3373 the OS had its own crypt16() function.
3374
337528. Added bounce_return_body as a new option, and bounce_return_size_limit
3376 as a preferred synonym for return_size_limit, both as an option and as an
3377 expansion variable.
3378
337929. Added LIBS=-liconv to OS/Makefile-OSF1.
3380
338130. Changed the default configuration ACL to relax the local part checking rule
3382 for addresses that are not in any local domains. For these addresses,
3383 slashes and pipe symbols are allowed within local parts, but the sequence
3384 /../ is explicitly forbidden.
3385
338631. SPA server authentication was not clearing the challenge buffer before
3387 using it.
3388
338932. log_message in a "warn" ACL statement was writing to the reject log as
3390 well as to the main log, which contradicts the documentation and doesn't
3391 seem right (because no rejection is happening). So I have stopped it.
3392
339333. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
3394 However, I am unable to do any testing of this.
3395
339634. Fixed an infelicity in the appendfile transport. When checking directories
3397 for a mailbox, to see if any needed to be created, it was accidentally
3398 using path names with one or more superfluous leading slashes; tracing
3399 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
3400
340135. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
3402 contents are added to the log line that is written for every discarded
3403 recipient. (Previously a log_message setting was ignored.)
3404
340536. The ${quote: operator now quotes the string if it is empty.
3406
340737. The install script runs exim in order to find its version number. If for
3408 some reason other than non-existence or emptiness, which it checks, it
3409 could not run './exim', it was installing it with an empty version number,
3410 i.e. as "exim-". This error state is now caught, and the installation is
3411 aborted.
3412
341338. An argument was missing from the function that creates an error message
3414 when Exim fails to connect to the socket for saslauthd authentication.
3415 This could cause Exim to crash, or give a corrupted message.
3416
341739. Added isip, isip4, and isip6 to ${if conditions.
3418
341940. The ACL variables $acl_xx are now saved with the message, and can be
3420 accessed later in routers, transports, and filters.
3421
342241. The new lookup type nwildlsearch is like wildlsearch, except that the key
3423 strings in the file are not string-expanded.
3424
342542. If a MAIL command specified a SIZE value that was too large to fit into an
3426 int variable, the check against message_size_limit failed. Such values are
3427 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
3428 day this will have to be increased, but I don't think I want to be around
3429 when emails are that large.
3430
3431
3432
3433Exim version 4.22
3434-----------------
3435
3436 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
3437 iconv() is not standard in FreeBSD.
3438
3439 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with
3440 IPv6 enabled. The observed symptom was a segmentation fault on return from
3441 the function os_common_find_running_interfaces() in src/os.c.
3442
3443 3. In the check_special_case() function in daemon.c I had used "errno" as an
3444 argument name, which causes warnings on some systems. This was basically a
3445 typo, since it was named "eno" in the comments!
3446
3447 4. The code that waits for the clock to tick (at a resolution of some fraction
3448 of a second) so as to ensure message-id uniqueness was always waiting for
3449 at least one whole tick, when it could have waited for less. [This is
3450 almost certainly not relevant at current processor speeds, where it is
3451 unlikely to ever wait at all. But we try to future-proof.]
3452
3453 5. The function that sleeps for a time interval that includes fractions of a
3454 second contained a race. It did not block SIGALRM between setting the
3455 timer, and suspending (a couple of lines later). If the interval was short
3456 and the sigsuspend() was delayed until after it had expired, the suspension
3457 never ended. On busy systems this could lead to processes getting stuck for
3458 ever.
3459
3460 6. Some uncommon configurations may cause a lookup to happen in a queue runner
3461 process, before it forks any delivery processes. The open lookup caching
3462 mechanism meant that the open file or database connection was passed into
3463 the delivery process. The problem was that delivery processes always tidy
3464 up cached lookup data. This could cause a problem for the next delivery
3465 process started by the queue runner, because the external queue runner
3466 process does not know about the closure. So the next delivery process
3467 still has data in the lookup cache. In the case of a file lookup, there was
3468 no problem because closing a file descriptor in a subprocess doesn't affect
3469 the parent. However, if the lookup was caching a connection to a database,
3470 the connection was closed, and the second delivery process was likely to
3471 see errors such as "PGSQL: query failed: server closed the connection
3472 unexpectedly". The problem has been fixed by closing all cached lookups
3473 in a queue runner before running a delivery process.
3474
3475 7. Compiler warning on Linux for the second argument of iconv(), which doesn't
3476 seem to have the "const" qualifier which it has on other OS. I've
3477 parameterised it.
3478
3479 8. Change 4.21/2 was too strict. It is only if there are two authenticators
3480 *of the same type* (client or server) with the same public name that an
3481 error should be diagnosed.
3482
3483 9. When Exim looked up a host name for an IP address, but failed to find the
3484 original IP address when looking up the host name (a safety check), it
3485 output the message "<ip address> does not match any IP for NULL", which was
3486 confusing, to say the least. The bug was that the host name should have
3487 appeared instead of "NULL".
3488
348910. Since release 3.03, if Exim is called by a uid other than root or the Exim
3490 user that is built into the binary, and the -C or -D options is used, root
3491 privilege is dropped before the configuration file is read. In addition,
3492 logging is switched to stderr instead of the normal log files. If the
3493 configuration then re-defines the Exim user, the unprivileged environment
3494 is probably not what is expected, so Exim logs a panic warning message (but
3495 proceeds).
3496
3497 However, if deliver_drop_privilege is set, the unprivileged state may well
3498 be exactly what is intended, so the warning has been cut out in that case,
3499 and Exim is allowed to try to write to its normal log files.
3500
3501
3502Exim version 4.21
3503-----------------
3504
3505 1. smtp_return_error_details was not giving details for temporary sender
3506 or receiver verification errors.
3507
3508 2. Diagnose a configuration error if two authenticators have the same public
3509 name.
3510
3511 3. Exim used not to create the message log file for a message until the first
3512 delivery attempt. This could be confusing when incoming messages were held
3513 for policy or load reasons. The message log file is now created at the time
3514 the message is received, and an initial "Received" line is written to it.
3515
3516 4. The automatically generated man page for command line options had a minor
3517 bug that caused no ill effects; however, a more serious problem was that
3518 the procedure for building the man page automatically didn't always
3519 operate. Consequently, release 4.20 contains an out-of-date version. This
3520 shouldn't happen again.
3521
3522 5. When building Exim with embedded Perl support, the script that builds the
3523 Makefile was calling 'perl' to find its compile-time parameters, ignoring
3524 any setting of PERL_COMMAND in Local/Makefile. This is now fixed.
3525
3526 6. The freeze_tell option was not being used for messages that were frozen on
3527 arrival, either by an ACL or by local_scan().
3528
3529 7. Added the smtp_incomplete_transaction log selector.
3530
3531 8. After STARTTLS, Exim was not forgetting that it had advertised AUTH, so it
3532 was accepting AUTH without a new EHLO.
3533
3534 9. Added tls_remember_esmtp to cope with YAEB. This allows AUTH and other
3535 ESMTP extensions after STARTTLS without a new EHLO, in contravention of the
3536 RFC.
3537
353810. Logging of TCP/IP connections (when configured) now happens in the main
3539 daemon process instead of the child process, so that the TCP/IP connection
3540 count is more accurate (but it can never be perfect).
3541
354211. The use of "drop" in a nested ACL was not being handled correctly in the
3543 outer ACL. Now, if condition failure induced by the nested "drop" causes
3544 the outer ACL verb to deny access ("accept" or "discard" after "endpass",
3545 or "require"), the connection is dropped.
3546
354712. Similarly, "discard" in a nested ACL wasn't being handled. A nested ACL
3548 that yield "discard" can now be used with an "accept" or a "discard" verb,
3549 but an error is generated for any others (because I can't see a useful way
3550 to define what should happen).
3551
355213. When an ACL is read dynamically from a file (or anywhere else), the lines
3553 are now processed in the same way as lines in the Exim configuration file.
3554 In particular, continuation lines are supported.
3555
355614. Added the "dnslists = a.b.c!=n.n.n.n" feature.
3557
355815. Added -ti meaning -t -i.
3559
356016. Check for letters, digits, hyphens, and dots in the names of dnslist
3561 domains, and warn by logging if others are found.
3562
356317. At least on BSD, alignment is not guarenteed for the array of ifreq's
3564 returned from GIFCONF when Exim is trying to find the list of interfaces on
3565 a host. The code in os.c has been modified to copy each ifreq to an aligned
3566 structure in all cases.
3567
3568 Also, in some cases, the returned ifreq's were being copied to a 'struct
3569 ifreq' on the stack, which was subsequently passed to host_ntoa(). That
3570 means the last couple of bytes of an IPv6 address could be chopped if the
3571 ifreq contained only a normal sockaddr (14 bytes storage).
3572
357318. Named domain lists were not supported in the hosts_treat_as_local option.
3574 An entry such as +xxxx was not recognized, and was treated as a literal
3575 domain name.
3576
357719. Ensure that header lines added by a DATA ACL are included in the reject log
3578 if the ACL subsequently rejects the message.
3579
358020. Upgrade the cramtest.pl utility script to use Digest::MD5 instead of just
3581 MD5 (which is deprecated).
3582
358321. When testing a filter file using -bf, Exim was writing a message when it
3584 took the sender from a "From " line in the message, but it was not doing so
3585 when it took $return_path from a Return-Path: header line. It now does.
3586
358722. If the contents of a "message" modifier for a "warn" ACL verb do not begin
3588 with a valid header line field name (a series of printing characters
3589 terminated by a colon, Exim now inserts X-ACL-Warn: at the beginning.
3590
359123. Changed "disc" in the source to "disk" to conform to the documentation and
3592 the book and for uniformity.
3593
359424. Ignore Sendmail's -Ooption=value command line item.
3595
359625. When execve() failed while trying to run a command in a pipe transport,
3597 Exim was returning EX_UNAVAILBLE (69) from the subprocess. However, this
3598 could be confused with a return value of 69 from the command itself. This
3599 has been changed to 127, the value the shell returns if it is asked to run
3600 a non-existent command. The wording for the related log line suggests a
3601 non-existent command as the problem.
3602
360326. If received_header_text expands to an empty string, do not add a Received:
3604 header line to the message. (Well, it adds a token one on the spool, but
3605 marks it "old" so that it doesn't get used or transmitted.)
3606
360727. Installed eximstats 1.28 (addition of -nt option).
3608
360928. There was no check for failure on the call to getsockname() in the daemon
3610 code. This can fail if there is a shortage of resources on the system, with
3611 ENOMEM, for example. A temporary error is now given on failure.
3612
361329. Contrary to the C standard, it seems that in some environments, the
3614 equivalent of setlocale(LC_ALL, "C") is not obeyed at the start of a C
3615 program. Exim now does this explicitly; it affects the formatting of
3616 timestamps using strftime().
3617
361830. If exiqsumm was given junk data, it threw up some uninitialized variable
3619 complaints. I've now initialized all the variables, to avoid this.
3620
362132. Header lines added by a system filter were not being "seen" during
3622 transport-time rewrites.
3623
362433. The info_callback() function passed to OpenSSL is set up with type void
3625 (*)(SSL *, int, int), as described somewhere. However, when calling the
3626 function (actually a macro) that sets it up, the type void(*)() is
3627 expected. I've put in a cast to prevent warnings from picky compilers.
3628
362934. If a DNS black list lookup found a CNAME record, but there were no A
3630 records associated with the domain it pointed at, Exim crashed.
3631
363235. If a DNS black list lookup returned more than one A record, Exim ignored
3633 all but the first. It now scans all returned addresses if a particular IP
3634 value is being sought. In this situation, the contents of the
3635 $dnslist_value variable are a list of all the addresses, separated by a
3636 comma and a space.
3637
363836. Tightened up the rules for host name lookups using reverse DNS. Exim used
3639 to accept a host name and all its aliases if the forward lookup for any of
3640 them yielded the IP address of the incoming connection. Now it accepts only
3641 those names whose forward lookup yields the correct IP address. Any other
3642 names are discarded. This closes a loophole whereby a rogue DNS
3643 administrator could create reverse DNS records to break through a
3644 wildcarded host restriction in an ACL.
3645
364637. If a user filter or a system filter that ran in a subprocess used any of
3647 the numerical variables ($1, $2 etc), or $thisaddress, in a pipe command,
3648 the wrong values were passed to the pipe command ($thisaddress had the
3649 value of $0, $0 had the value of $1, etc). This bug was introduced by
3650 change 4.11/101, and not discovered because I wrote an inadequate test. :-(
3651
365238. Improved the line breaking for long SMTP error messages from ACLs.
3653 Previously, if there was no break point between 40 and 75 characters, Exim
3654 left the rest of the message alone. Two changes have been made: (a) I've
3655 reduced the minimum length to 35 characters; (b) if it can't find a break
3656 point between 35 and 75 characters, it looks ahead and uses the first one
3657 that it finds. This may give the occasional overlong line, but at least the
3658 remaining text gets split now.
3659
366039. Change 82 of 4.11 was unimaginative. It assumed the limit on the number of
3661 file descriptors might be low, and that setting 1000 would always raise it.
3662 It turns out that in some environments, the limit is already over 1000 and
3663 that lowering it causes trouble. So now Exim takes care not to decrease it.
3664
366540. When delivering a message, the value of $return_path is set to $sender_
3666 address at the start of routing (routers may change the value). By an
3667 oversight, this default was not being set up when an address was tested by
3668 -bt or -bv, which affected the outcome if any router or filter referred to
3669 $return_path.
3670
367141. The idea of the "warn" ACL verb is that it adds a header or writes to the
3672 log only when "message" or "log_message" are set. However, if one of the