Log lines flagged for both main and reject logs were not written to
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
a7d7aa58 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.370 2006/07/07 13:36:33 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
478be7b0
SC
6Exim version 4.63
7-----------------
8
9SC/01 Use a glob alias rather than an array ref in eximstats generated
10 parser. This improves both readability and performance.
11
12SC/02 Collect SpamAssassin and rejection statistics in eximstats.
13 Don't display local sender or destination tables in eximstats unless
14 there is data to show.
15 Added average volumes into the eximstats top table text output.
16
17SC/03 Collect data on the number of addresses (recipients) as well
18 as the number of messages in eximstats.
19
2b965a65
TF
20TF/01 Correct an error in the documentation for the redirect router. Exim
21 does (usually) call initgroups() when daemonizing.
478be7b0 22
45b91596
PH
23TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
24 with consistent privilege compared to when running as a daemon.
478be7b0 25
c59f5781
TF
26TF/03 Note in the spec that $authenticated_id is not set for local
27 submissions from trusted users.
28
90fc3069
TF
29TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
30 Thanks to Dean Brooks <dean@iglou.com> for the patch.
31
6083aca0
TF
32TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
33 by adding some example configuration directives to the default
34 configuration file. A little bit of work is required to uncomment the
35 directives and define how usernames and passwords are checked, but
36 there is now a framework to start from.
37
765b530f
PH
38PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
39 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
40 without this. I don't know how relevant this is to other LDAP libraries.
41
4e167a8c
PH
42PH/02 Add the verb name to the "unknown ACL verb" error.
43
4608d683
PH
44PH/03 Magnus Holmgren's patch for filter_prepend_home.
45
b8dc3e4a
PH
46PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
47
5418e93b
PH
48PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
49 directory not expanded when it should be if an expanded home directory
50 was set for the address (which is overridden by the transport).
51
b4a9bda2
PH
52PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
53 libradius.
54
45b91596
PH
55PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
56 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
57 because it is too late at that time, and has no effect.
58
5547e2c5
PH
59PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
60 security issue with \' (bugzilla #107). I could not use the
61 PQescapeStringConn() function, because it needs a PGconn value as one of
62 its arguments.
63
dbcef0ea
PH
64PH/08 When testing addresses using -bt, indicate those final addresses that
65 are duplicates that would not cause an additional delivery. At least one
66 person was confused, thinking that -bt output corresponded to deliveries.
67 (Suppressing duplicates isn't a good idea as you lose the information
68 about possibly different redirections that led to the duplicates.)
69
25257489
PH
70PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
71 systems where poll() doesn't work, in particular OS X.
72
c816d124
PH
73PH/10 Added more information to debugging output for retry time not reached.
74
a9ccd69a
PH
75PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
76 operations in malware.c.
77
75fa1910
PH
78PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
79 signatures.
80
a7d7aa58
PH
81PH/13 If write_rejectlog was set false when logging was sent to syslog with
82 syslog_duplication set false, log lines that would normally be written
83 both the the main log and to the reject log were not written to syslog at
84 all.
85
c59f5781 86
c887c79e
TF
87Exim version 4.62
88-----------------
89
90TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
91 other effects) broke the use of negated acl sub-conditions.
92
1cce3af8
PH
93PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
94 patch).
95
afb3eaaf
PH
96PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
97 "Deny" causes Exim to reject the incoming connection with a 554 error.
98 Unfortunately, if there is a major crisis, such as a disk failure,
99 tcp-wrappers gives "deny", whereas what one would like would be some
100 kind of temporary error. A kludge has been added to help with this.
101 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
102 554 error is used if errno is still zero or contains ENOENT (which occurs
103 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
104 451 error is used.
105
e173618b
PH
106PH/03 Add -lutil to the default FreeBSD LIBS setting.
107
dd16e114
PH
108PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
109 errors. Otherwise a message that provokes a temporary error (when other
110 messages do not) can cause a whole host to time out.
111
f7fd3850
PH
112PH/05 Batch deliveries by appendfile and pipe transports did not work when the
113 addresses were routed directly to files or pipes from a redirect router.
114 File deliveries just didn't batch; pipe deliveries might have suffered
115 odd errors.
116
d87df92c
PH
117PH/06 A failure to get a lock for a hints database would erroneously always say
118 "Failed to get write lock", even when it was really a read lock.
119
7e9f683d
PH
120PH/07 The appendfile transport was creating MBX lock files with a fixed mode
121 of 0600. This has been changed to use the value of the lockfile_mode
122 option (which defaults to 0600).
123
bfad5236
PH
124PH/08 Applied small patch from the Sieve maintainer.
125
01c490df
PH
126PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
127 folder from quota calculations, a direct delivery into this folder messed
128 up the contents of the maildirsize file. This was because the regex was
129 used only to exclude .Trash (or whatever) when the size of the mailbox
130 was calculated. There was no check that a delivery was happening into an
131 excluded directory. This bug has been fixed by ignoring all quota
132 processing for deliveries into excluded directories.
133
d6629cdc
PH
134PH/10 Added the maildirfolder_create_regex option to appendfile.
135
1cce3af8 136
214e2000
PH
137Exim version 4.61
138-----------------
139
140PH/01 The code for finding all the local interface addresses on a FreeBSD
141 system running IPv6 was broken. This may well have applied to all BSD
142 systems, as well as to others that have similar system calls. The broken
143 code found IPv4 interfaces correctly, but gave incorrect values for the
144 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
145 that it would not match correctly against @[] and not recognize the IPv6
146 addresses as local.
147
f9daeae0
PH
148PH/02 The ipliteral router was not recognizing addresses of the form user@
149 [ipv6:....] because it didn't know about the "ipv6:" prefix.
150
7e66e54d
PH
151PH/03 Added disable_ipv6.
152
c8ea1597
PH
153PH/04 Changed $reply_address to use the raw form of the headers instead of the
154 decoded form, because it is most often used to construct To: headers
155 lines in autoreplies, and the decoded form may well be syntactically
156 invalid. However, $reply_address has leading white space removed, and all
157 newlines turned into spaces so that the autoreply transport does not
158 grumble.
159
911f6fde
PH
160PH/05 If group was specified without a user on a router, and no group or user
161 was specified on a transport, the group from the router was ignored.
162
47ca6d6c
PH
163PH/06 Increased the number of ACL variables to 20 of each type, and arranged
164 for visible compile-time settings that can be used to change these
165 numbers, for those that want even more. Backwards compatibility with old
166 spool files has been maintained. However, going back to a previous Exim
167 release will lost any variables that are in spool files.
168
ed0e9820
PH
169PH/07 Two small changes when running in the test harness: increase delay when
170 passing a TCP/IP connection to a new process, in case the original
171 process has to generate a bounce, and remove special handling of
172 127.0.0.2 (sic), which is no longer necessary.
173
eff37e47
PH
174PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
175 be the same on different OS.
176
1921d2ea
PH
177PH/09 Moved a debug statement in filter processing to avoid a race problem when
178 testing.
179
b3f69ca8
JJ
180JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
181 whether --show-vars was specified or not
182
183JJ/02 exipick: Added support for new ACL variable spool format introduced
184 in 4.61-PH/06
185
424a1c63
PH
186PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
187 syntactically invalid From: or Reply-to: line, and a filter used this to
188 generate an autoreply, and therefore failed to obtain an address for the
189 autoreply, Exim could try to deliver to a non-existent relative file
190 name, causing unrelated and misleading errors. What now happens is that
191 it logs this as a hard delivery error, but does not attempt to create a
192 bounce message.
193
7a100415
PH
194PH/11 The exinext utility has a -C option for testing purposes, but although
195 the given file was scanned by exinext itself; it wasn't being passed on
196 when Exim was called.
197
19b9dc85
PH
198PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
199 an end-of-file indication when reading a command response.
200
309bd837
PH
201PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
202 compiled. In many other places in Exim, IPv6 addresses are always
203 recognized, so I have changed this. It also means that IPv4 domain
204 literals of the form [IPV4:n.n.n.n] are now always recognized.
205
59e82a2a
PH
206PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
207 used if the router is not running as root, for example, when verifying at
208 ACL time, or when using -bh. The debugging output from this situation was
209 non-existent - all you got was a failure to exec. I have made two
210 changes:
211
212 (a) Failures to set uid/gid, the current directory, or a process leader
213 in a subprocess such as that created by queryprogram now generate
214 suitable debugging ouput when -d is set.
215
216 (b) The queryprogram router detects when it is not running as root,
217 outputs suitable debugging information if -d is set, and then runs
218 the subprocess without attempting to change uid/gid.
219
9edc04ce
PH
220PH/15 Minor change to Makefile for building test_host (undocumented testing
221 feature).
222
1349e1e5
PH
223PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
224 additional section of a DNS packet that returns MX or SRV records.
225 Instead, it always explicitly searches for A/AAAA records. This avoids
226 major problems that occur when a DNS server includes only records of one
227 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
228 fixed another bug: if SRV records were looked up and the corresponding
229 address records were *not* found in the additional section, the port
230 values from the SRV records were lost.
231
ea49d0e1
PH
232PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
233 using the correct key (the original address) when searching the retry
234 rules in order to find which one to use for generating the retry hint.
235
064a94c9
PH
236PH/18 If quota_warn_message contains a From: header, Exim now refrains from
237 adding the default one. Similarly, if it contains a Reply-To: header, the
238 errors_reply_to option, if set, is not used.
239
727071f8
PH
240PH/19 When calculating a retry time, Exim used to measure the "time since
241 failure" by looking at the "first failed" field in the retry record. Now
242 it does not use this if it is later than than the arrival time of the
243 message. Instead it uses the arrival time. This makes for better
244 behaviour in cases where some deliveries succeed, thus re-setting the
245 "first failed" field. An example is a quota failure for a huge message
246 when small messages continue to be delivered. Without this change, the
247 "time since failure" will always be short, possible causing more frequent
248 delivery attempts for the huge message than are intended.
dd16e114 249 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 250
f78eb7c6
PH
251PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
252 $1, $2, $3) because the numerical variables can be reset during some
253 expansion items (e.g. "match"), thereby losing the authentication data.
254
21c28500
PH
255PH/21 Make -bV show the size of off_t variables so that the test suite can
256 decide whether to run tests for quotas > 2G.
257
258PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
259 mailbox_size, and mailbox_filecount in the appendfile transport. If a
260 filecount value is greater than 2G or if a quota value is greater than 2G
261 on a system where the size of off_t is not greater than 4, a panic error
262 is given.
263
1688f43b
PH
264PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
265 never match. The debug and -bh output now contains an explicit error
266 message indicating a malformed IPv4 address or mask.
267
268PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
269 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
270 PH/23 above applies.
271
9675b384
PH
272PH/25 Do not write to syslog when running in the test harness. The only
273 occasion when this arises is a failure to open the main or panic logs
274 (for which there is an explicit test).
275
6a3f1455
PH
276PH/26 Added the /no_tell option to "control=freeze".
277
dac79d3e
PH
278PH/27 If a host name lookup failed very early in a connection, for example, if
279 the IP address matched host_lookup and the reverse lookup yielded a name
280 that did not have a forward lookup, an error message of the form "no IP
281 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
282 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 283
5977a0b3
PH
284PH/28 An enabling patch from MH: add new function child_open_exim2() which
285 allows the sender and the authenticated sender to be set when
286 submitting a message from within Exim. Since child_open_exim() is
287 documented for local_scan(), the new function should be too.
288
c91535f3
PH
289PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
290 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
291 results in an empty string is now treated as unset.
292
0d46a8c8
PH
293PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
294
278c6e6c
PH
295PH/31 Added sender_verify_fail logging option.
296
2cbb4081
PH
297PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
298 needed by RFC 822 but not by RFC 2822 was commented out. I have now
299 tidied the source and removed it altogether.
300
3eef829e
PH
301PH/33 When a queue run was abandoned because the load average was too high, a
302 log line was always written; now it is written only if the queue_run log
303 selector is set. In addition, the log line for abandonment now contains
304 information about the queue run such as the pid. This is always present
305 in "start" and "stop" lines but was omitted from the "abandon" line.
306
1ab95fa6
PH
307PH/34 Omit spaces between a header name and the colon in the error message that
308 is given when verify = headers_syntax fails (if there are lots of them,
309 the message gets confusing).
310
230205fc
PH
311PH/35 Change the default for dns_check_names_pattern to allow slashes within
312 names, as there are now some PTR records that contain slashes. This check
313 is only to protect against broken name servers that fall over on strange
314 characters, so the fact that it applies to all lookups doesn't matter.
315
75e0e026
PH
316PH/36 Now that the new test suite is complete, we can remove some of the
317 special code in Exim that was needed for the old test suite. For example,
318 sorting DNS records because real resolvers return them in an arbitrary
319 order. The new test suite's fake resolver always returns records in the
320 same order.
321
322PH/37 When running in the test harness, use -odi for submitted messages (e.g.
323 bounces) except when queue_only is set, to avoid logging races between
324 the different processes.
325
145396a6
PH
326PH/38 Panic-die if .include specifies a non-absolute path.
327
3cd34f13
PH
328PH/39 A tweak to the "H" retry rule from its user.
329
11121d3d
JJ
330JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
331 a label. They prevented compilation on older perls.
332
333JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
334 a warning to be raised on newish perls.
335
336JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
337 on queue. Changes to match documented behaviour of showing count of
338 messages matching specified criteria.
339
8def5aaf
PH
340PH/40 Changed the default ident timeout from 30s to 5s.
341
929ba01c
PH
342PH/41 Added support for the use of login_cap features, on those BSD systems
343 that have them, for controlling the resources used by pipe deliveries.
344
2632889e
PH
345PH/42 The content-scanning code uses fopen() to create files in which to put
346 message data. Previously it was not paying any attention to the mode of
347 the files. Exim runs with umask(0) because the rest of the code creates
348 files with open(), and sets the required mode explicitly. Thus, these
349 files were ending up world-writeable. This was not a big issue, because,
350 being within the spool directory, they were not world-accessible. I have
351 created a function called modefopen, which takes an additional mode
352 argument. It sets umask(777), creates the file, chmods it to the required
353 mode, then resets the umask. All the relevant calls to fopen() in the
354 content scanning code have been changed to use this function.
355
944a9c55
PH
356PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
357 to 24 hours. This avoids potential overflow problems when processing G
358 and H retry rules. I suspect nobody ever tinkers with this value.
359
4a23603b
PH
360PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
361
4730f942
PH
362PH/45 When the plaintext authenticator is running as a client, the server's
363 challenges are checked to ensure they are valid base64 strings. By
364 default, the authentication attempt is cancelled if an invalid string is
365 received. Setting client_ignore_invalid_base64 true ignores these errors.
366 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
367 they are received. Thus, the responses can be made to depend on the
368 challenges. If an invalid string is ignored, an empty string is placed in
369 the variable.
370
30dba1e6
PH
371PH/46 Messages that are created by the autoreply transport now contains a
372 References: header, in accordance with RFCs 2822 and 3834.
373
382afc6b
PH
374PH/47 Added authenticated_sender_force to the smtp transport.
375
a86229cf
PH
376PH/48 The ${prvs expansion was broken on systems where time_t was long long.
377
50c99ba6
PH
378PH/49 Installed latest patch from the Sieve maintainer.
379
d35e429d
PH
380PH/50 When an Exim quota was set without a file count quota, and mailbox_size
381 was also set, the appendfile transport was unnecessarily scanning a
382 directory of message files (e.g. for maildir delivery) to find the count
383 of files (along with the size), even though it did not need this
384 information. It now does the scan only if it needs to find either the
385 size of the count of files.
386
f90d018c
PH
387PH/51 Added ${time_eval: to convert Exim time strings into seconds.
388
75def545
PH
389PH/52 Two bugs concerned with error handling when the smtp transport is
390 used in LMTP mode:
391
392 (i) Exim was not creating retry information for temporary errors given
393 for individual recipients after the DATA command when the smtp transport
394 was used in LMTP mode. This meant that they could be retried too
395 frequently, and not timed out correctly.
396
397 (ii) Exim was setting the flag that allows error details to be returned
398 for LMTP errors on RCPT commands, but not for LMTP errors for individual
399 recipients that were returned after the DATA command.
400
401PH/53 This is related to PH/52, but is more general: for any failing address,
402 when detailed error information was permitted to be returned to the
403 sender, but the error was temporary, then after the final timeout, only
404 "retry timeout exceeded" was returned. Now it returns the full error as
405 well as "retry timeout exceeded".
406
c46782ef
PH
407PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
408 do this, and (what is worse) MTAs that accept it.
409
71fafd95
PH
410PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
411 will now be deprecated.
412
2c5db4fd
PH
413PH/56 New os.c-cygwin from the Cygwin maintainer.
414
9cf6b11a
JJ
415JJ/06 exipick: added --unsorted option to allow unsorted output in all output
416 formats (previously only available in exim formats via -bpr, -bpru,
417 and -bpra. Now also available in native and exiqgrep formats)
418
419JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
420 with very large, slow to parse queues
421
422JJ/08 exipick: added ! as generic prefix to negate any criteria format
423
424JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
425
898d150f
PH
426PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
427 responses to authentication challenges, though it was showing the
428 challenges; (ii) I've removed the CR characters from the debug output for
429 SMTP output lines.
430
46218253
PH
431PH/58 Allow for the insertion of a newline as well as a space when a string
432 is turned into more than one encoded-word during RFC 2047 encoding. The
433 Sieve code now uses this.
434
e97957bc
PH
435PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
436 data_4xx, lost_connection, tls_required.
437
81e509d7
PH
438PH/60 When a VRFY deferred or FAILED, the log message rather than the user
439 message was being sent as an SMTP response.
440
3d240ff7
PH
441PH/61 Add -l and -k options to exicyclog.
442
b37c4101
PH
443PH/62 When verifying, if an address was redirected to one new address, so that
444 verification continued, and the new address failed or deferred after
445 having set something in $address_data, the value of $address_data was not
446 passed back to the ACL. This was different to the case when no
447 redirection occurred. The value is now passed back in both cases.
448
79378e0f
PH
449PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
450 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
451 use login_cap.h, so on its own it isn't the distinguishing feature. The
452 new name refers directly to the setclassresources() function.
453
e49c7bb4
PH
454PH/65 Added configuration files for NetBSD3.
455
d114ec46
PH
456PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
457
f3d7df6c
PH
458PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
459 is preferred over IPv4.
460
715ab376
PH
461PH/68 The bounce_return_message and bounce_return_body options were not being
462 honoured for bounces generated during the reception of non-SMTP messages.
463 In particular, this applied to messages rejected by the ACL. This bug has
464 been fixed. However, if bounce_return_message is true and bounce_return_
465 body is false, the headers that are returned for a non-SMTP message
466 include only those that have been read before the error was detected.
467 (In the case of an ACL rejection, they have all been read.)
468
6b31b150
PH
469PH/69 The HTML version of the specification is now built in a directory called
470 spec_html instead of spec.html, because the latter looks like a path with
471 a MIME-type, and this confuses some software.
472
473PH/70 Catch two compiler warnings in sieve.c.
474
d515a917
PH
475PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
476 function verify_get_ident() calls ip_connect() to connect a socket, but
477 if the "connect()" function timed out, ip_connect() used to close the
478 socket. However, verify_get_ident() also closes the socket later, and in
479 between Exim writes to the log, which may get opened at this point. When
480 the socket was closed in ip_connect(), the log could get the same file
481 descriptor number as the socket. This naturally causes chaos. The fix is
482 not to close the socket in ip_connect(); the socket should be closed by
483 the function that creates it. There was only one place in the code where
484 this was missing, in the iplookup router, which I don't think anybody now
485 uses, but I've fixed it anyway.
486
9b8fadde
PH
487PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
488 well as to direct DNS lookups. Otherwise the handling of names in host
489 lists is inconsistent and therefore confusing.
490
214e2000 491
5de37277
PH
492Exim version 4.60
493-----------------
494
cc38ddbf
PH
495PH/01 Two changes to the default runtime configuration:
496
497 (1) Move the checks for relay_from_hosts and authenticated clients from
498 after to before the (commented out) DNS black list checks.
499
500 (2) Add control=submission to the relay_from_hosts and authenticated
501 clients checks, on the grounds that messages accepted by these
502 statements are most likely to be submissions.
5de37277 503
72fdd6ae
PH
504PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
505
506 (1) Generate an error if the third argument for the ${prvs expansion is
507 not a single digit.
508
509 (2) Treat a missing third argument of ${prvscheck as if it were an empty
510 string.
511
512 (3) Reset the variables that are obtained from the first argument of
513 ${prvscheck and used in the second argument before leaving the code,
514 because their memory is reclaimed, so using them afterwards may do
515 silly things.
516
517 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
518 one (it's much easier than Tom thought :-).
519
520 (5) Because of (4), we can now allow for the use of $prvscheck_result
521 inside the third argument.
cb9328de 522
cb741023
PH
523PH/03 For some reason, the default setting of PATH when running a command from
524 a pipe transport was just "/usr/bin". I have changed it to
525 "/bin:/usr/bin".
526
f174f16e
PH
527PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
528 anything to be listed in the output from -bV.
b2f5a032 529
c25242d7
PH
530PH/05 When a filter generated an autoreply, the entire To: header line was
531 quoted in the delivery log line, like this:
532
533 => >A.N.Other <ano@some.domain> <original@ddress> ...
534
535 This has been changed so that it extracts the operative address. There
536 may be more than one such address. If so, they are comma-separated, like
537 this:
538
539 => >ano@some.domain,ona@other.domain <original@ddress> ...
540
82c19f95
PH
541PH/06 When a client host used a correct literal IP address in a HELO or EHLO
542 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
543 not being looked up in the rDNS to get a host name, Exim was showing the
544 IP address twice in Received: lines, even though the IP addresses were
545 identical. For example:
546
547 Received: from [1.2.3.4] (helo=[1.2.3.4])
548
549 However, if the real host name was known, it was omitting the HELO data
550 if it matched the actual IP address. This has been tidied up so that it
551 doesn't show the same IP address twice.
552
d7ffbc12
PH
553PH/07 When both +timestamp and +memory debugging was on, the value given by
554 $tod_xxx expansions could be wrong, because the tod_stamp() function was
555 called by the debug printing, thereby overwriting the timestamp buffer.
556 Debugging no longer uses the tod_stamp() function when +timestamp is set.
557
9f526266
PH
558PH/08 When the original message was included in an autoreply transport, it
559 always said "this is a copy of the message, including all the headers",
560 even if body_only or headers_only was set. It now gives an appropriate
561 message.
562
87fcc8b9
PH
563PH/09 Applied a patch from the Sieve maintainer which:
564
565 o fixes some comments
566 o adds the (disabled) notify extension core
567 o adds some debug output for the result of if/elsif tests
568 o points to the current vacation draft in the documentation
569 and documents the missing references header update
570
571 and most important:
572
573 o fixes a bug in processing the envelope test (when testing
574 multiple envelope elements, the last element determinted the
575 result)
576
456682f5
PH
577PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
578 Electronic Mail") by including:
579
580 Auto-submitted: auto-generated
581
582 in the messages that it generates (bounce messages and others, such as
583 warnings). In the case of bounce messages for non-SMTP mesages, there was
584 also a typo: it was using "Auto_submitted" (underscore instead of
585 hyphen). Since every message generated by Exim is necessarily in response
586 to another message, thes have all been changed to:
587
588 Auto-Submitted: auto-replied
589
590 in accordance with these statements in the RFC:
591
592 The auto-replied keyword:
593
594 - SHOULD be used on messages sent in direct response to another
595 message by an automatic process,
596
597 - MUST NOT be used on manually-generated messages,
598
599 - MAY be used on Delivery Status Notifications (DSNs) and Message
600 Disposition Notifications (MDNs),
601
602 - MUST NOT be used on messages generated by automatic or periodic
603 processes, except for messages which are automatic responses to
604 other messages.
605
3e46c1aa
PH
606PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
607 to the default Received: header definition.
456682f5 608
49826d12
PH
609PH/12 Added log selector acl_warn_skipped (default on).
610
eba0c039
PH
611PH/13 After a successful wildlsearch lookup, discard the values of numeric
612 variables because (a) they are in the wrong storage pool and (b) even if
613 they were copied, it wouldn't work properly because of the caching.
614
a0d6ba8a
PH
615PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
616 checking when decoding. Apparently there are clients that generate
617 overlong encoded strings. Why am I not surprised?
618
f0917727
PH
619PH/15 If the first argument of "${if match_address" was not empty, but did not
620 contain an "@" character, Exim crashed. Now it writes a panic log message
621 and treats the condition as false.
622
096fee00
PH
623PH/16 In autoreply, treat an empty string for "once" the same as unset.
624
024bd3c2
PH
625PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
626 extension "envelope-auth". The code is finished and in agreement with
627 other implementations, but there is no documentation so far and in fact,
628 nobody wrote the draft yet. This extension is currently #undef'ed, thus
629 not changing the active code.
630
631 Print executed "if" and "elsif" statements when debugging is used. This
632 helps a great deal to understand what a filter does.
633
634 Document more things not specified clearly in RFC3028. I had all this
635 sorted out, when out of a sudden new issues came to my mind. Oops."
636
df199fec
PH
637PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
638 (Bugzilla #53).
639
d27f1df3
PH
640PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
641 canonical form (as documented). However, after a host name lookup from
642 the IP address, check_host() was doing a simple string comparison with
643 addresses acquired from the DNS when checking that the found name did
644 have the original IP as one of its addresses. Since any found IPv6
645 addresses are likely to be in abbreviated form, the comparison could
646 fail. Luckily, there already exists a function for doing the comparison
647 by converting both addresses to binary, so now that is used instead of
648 the text comparison.
649
96776534
PH
650PH/20 There was another similar case to PH/19, when a complete host name was
651 given in a host list; looking up its IP address could give an abbreviated
652 form, whereas the current host's name might or might not be abbreviated.
653 The same fix has been applied.
654
5de37277 655
9a799bc0
PH
656Exim version 4.54
657-----------------
658
659PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
660 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
661 It now does.
662
99a4b039
PH
663PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
664 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
665
666PH/03 Typo: missing ".o" in src/pcre/Makefile.
667
4b233853
PH
668PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
669 header line, restrict the check to what is listed in RFCs 2369 and 2929.
670 Also, for "Auto-Submitted", treat anything other than "no" as
671 non-personal, in accordance with RFC 3834. (Previously it treated
672 anything starting "auto-" as non-personal.)
673
8857ccfd
PH
674TF/01 The control=submission/name=... option had a problem with syntax
675 errors if the name included a slash character. The /name= option
676 now slurps the rest of the string, so it can include any characters
677 but it must come last in the list of options (after /sender_retain
678 or /domain=).
679
433a2980
PH
680PH/05 Some modifications to the interface to the fake nameserver for the new
681 testing suite.
682
3e46c1aa 683
9a799bc0 684
e3a311ba
TK
685Exim version 4.53
686-----------------
687
688TK/01 Added the "success_on_redirect" address verification option. See
689 NewStuff for rationale and an example.
690
13b685f9
PH
691PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
692
395ff96d
PH
693PH/02 Patch to exigrep to allow it to work on syslog lines.
694
5b68f6e4
PH
695PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
696 fread() to skip over the body file's header line, because in Cygwin the
697 header line is locked and is inaccessible.
698
1ab52c69
PH
699PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
700 co-exist for some time) to make it clear that it is the Exim ID that is
701 referenced, not the Message-ID: header line.
702
b07e6aa3
PH
703PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
704 string_format() function, because snprintf() does not exist on all
705 operating systems.
706
254e032f
PH
707PH/06 The use of forbid_filter_existstest now also locks out the use of the
708 ${stat: expansion item.
709
3af76a81
PH
710PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
711 protocol synchronization error", to keep the pedants happy.
712
2548ba04
PH
713PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
714 well as for IRIX systems, when gcc is being used. See the host.c source
715 file for comments.
716
b6c6011d
PH
717PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
718
cf39cf57
PH
719PH/10 Named domain lists were not working if used in a queue_smtp_domains
720 setting.
721
f1513293
PH
722PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
723 transport and to the smtp transport in LMTP mode.
724
727549a4
PH
725TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
726
af46795e
PH
727PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
728 run a filter in a subprocess. This could lead to confusion in subsequent
729 lookups in the parent process. There should also be a search_tidyup() at
730 the end of the subprocess.
731
d7b47fd0
PH
732PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
733 only if the host matched helo_try_verify_hosts, which caused the
734 verification to occur when the EHLO/HELO command was issued. The ACL just
735 tested the remembered result. Now, if a previous verification attempt has
736 not happened, "verify = helo" does it there and then.
737
ee744174
JJ
738JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
739
b582ab87
PH
740TK/03 Fix log output including CR from clamd.
741
41a13e0a
PH
742PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
743 exist provoked a memory error which could cause a segfault.
744
f625cc5a
PH
745PH/15 Installed PCRE 6.2
746
747PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
748
21f7af35
PH
749PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
750 of the problem. Specifically, suggested +O2 rather than +O1 for the
751 HP-UX compiler.
752
31480e42
PH
753PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
754
2d280592
PH
755PH/20 If a delivery was routed to a non-standard port by means of an SRV
756 record, the port was not correctly logged when the outgoing_port log
757 selector was set (it logged the transort's default port).
758
7cd1141b
PH
759PH/21 Added support for host-specific ports to manualroute, queryprogram,
760 fallback_hosts, and "hosts" in the smtp transport.
761
762PH/22 If the log selector "outgoing_port" is set, the port is now also given on
763 host errors such as "Connection refused".
764
750af86e
PH
765PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
766 authentication with radiusclient 0.4.9:
767
768 - Error returned from rc_read_config was caught wrongly
769 - Username/password not passed on to radius server due to wrong length.
770
771 The presumption is that some radiusclient API changes for 4.51/PH/17
772 were not taken care of correctly. The code is still untested by me (my
773 Linux distribution still has 0.3.2 of radiusclient), but it was
774 contributed by a Radius user.
775
776PH/24 When doing a callout, the value of $domain wasn't set correctly when
777 expanding the "port" option of the smtp transport.
778
4304270b
TK
779TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
780 while reading a MIME header. Thanks to Tom Hughes for a patch.
781
750af86e
PH
782PH/24 Include config.h inside local_scan.h so that configuration settings are
783 available.
784
64ffc24f
PH
785PH/25 Make $smtp_command_argument available after all SMTP commands. This means
786 that in an ACL for RCPT (for example), you can examine exactly what was
787 received.
788
5dd9625b
PH
789PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
790 commands, but it was not correctly comparing the address with the actual
791 client host address. Thus, it would show the EHLO address in Received:
792 header lines when this was not necessary.
793
5591031b
PH
794PH/27 Added the % operator to ${eval:}.
795
ba18e66a
PH
796PH/28 Exim tries to create and chdir to its spool directory when it starts;
797 it should be ignoring failures (because with -C, for example, it has lost
798 privilege). It wasn't ignoring creation failures other than "already
799 exists".
800
9cec981f
PH
801PH/29 Added "crypteq" to the list of supported features that Exim outputs when
802 -bV or -d is used.
803
aa2b5c79
PH
804PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
805 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
806 too many continuations, the temporary file was not being removed, and the
807 return code was incorrect.
aa2b5c79 808
48a53b7f
PH
809PH/31 Missing "BOOL" in function definition in filtertest.c.
810
1c59d63b
PH
811PH/32 Applied Sieve patches from the maintainer.
812
671012da
TK
813TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
814
1509d3a8
PH
815PH/33 Added "verify = not_blind".
816
817PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
818 Local/Makefile (with some defaults set). These are used in built scripts
819 such as exicyclog, but they have never been used in the exim_install
820 script (though there are many overriding facilities there). I have
821 arranged that the exim_install script now takes note of these two
822 settings.
823
824PH/35 Installed configuration files for Dragonfly.
825
2fe1a124
PH
826PH/36 When a locally submitted message by a trusted user did not contain a
827 From: header, and the sender address was obtained from -f or from an SMTP
828 MAIL command, and the trusted user did not use -F to supply a sender
829 name, $originator_name was incorrectly used when constructing a From:
830 header. Furthermore, $originator_name was used for submission mode
831 messages from external hosts without From: headers in a similar way,
832 which is clearly wrong.
833
8800895a
PH
834PH/37 Added control=suppress_local_fixups.
835
ccfdb010
PH
836PH/38 When log_selector = +received_sender was set, and the addition of the
837 sender made the log line's construction buffer exactly full, or one byte
838 less than full, an overflow happened when the terminating "\n" was
839 subsequently added.
840
1130bfb0
PH
841PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
842 when the result of a list match is failure because a DNS lookup failed.
843
ebcb507f
PH
844PH/40 RM_COMMAND is now used in the building process.
845
c35e155c
PH
846PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
847 the "build-* directories that it finds.
848
95d1f782
PH
849PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
850 address in a domain literal was a prefix of an interface address.
851
fd6de02e
PH
852PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
853 when verifying a sender address, unless rewrite_headers is false.
854
58de37c5
PH
855PH/44 Wrote a long comment about why errors_to addresses are verified as
856 recipients, not senders.
857
261cf466
TF
858TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
859 the ratelimit ACL was added.
860
3ee512ff
PH
861PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
862
e08c430f
PH
863PH/46 Added extra information about PostgreSQL errors to the error string.
864
bef5a11f
PH
865PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
866 avoiding the need to install special zones in a real server. This is
867 backwards compatible; if it can't find the fake resolver, it drops back.
868 Thus, both old and new test suites can be run.
869
7546de58
TF
870TF/02 Added util/ratelimit.pl
871
e5d5a95f
TF
872TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
873 clock is set back in time.
874
2e88a017
TF
875TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
876 Candler <B.Candler@pobox.com>.
877
a5f65aa4
TF
878TF/05 The fix for PH/43 was not completely correct; widen_domains is always
879 OK for addresses that are the result of redirections.
880
e7726cbf
PH
881PH/48 A number of further additions for the benefit of the new test suite,
882 including a fake gethostbyname() that interfaces to the fake DNS resolver
883 (see PH/47 above).
884
a7fdad5b
TF
885TF/06 The fix for widen_domains has also been applied to qualify_single and
886 search_parents which are the other dnslookup options that can cause
887 header rewrites.
888
6af56900
PH
889PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
890 type ("H").
891
0925ede6
PH
892PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
893
66afa403
TF
894TF/07 Exim produced the error message "an SRV record indicated no SMTP
895 service" if it encountered an MX record with an empty target hostname.
896 The message is now "an MX or SRV record indicated no SMTP service".
897
0154e85a
TF
898TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
899 if the DNS of the sending site is misconfigured. This is quite a
900 common situation. This change restores the behaviour of treating a
901 helo verification defer as a failure.
902
16f12c76
PH
903PH/51 If self=fail was set on a router, the bounce message did not include the
904 actual error message.
905
bbe902f0 906
e5a9dba6
PH
907Exim version 4.52
908-----------------
909
910TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
911
22c3b60b
PH
912PH/01 When a transport filter timed out in a pipe delivery, and the pipe
913 command itself ended in error, the underlying message about the transport
914 filter timeout was being overwritten with the pipe command error. Now the
915 underlying error message should be appended to the second error message.
916
06a9b4b5
PH
917TK/01 Fix poll() being unavailable on Mac OSX 10.2.
918
c1ac6996
PH
919PH/02 Reduce the amount of output that "make" produces by default. Full output
920 can still be requested.
921
9c7a242c
PH
922PH/03 The warning log line about a condition test deferring for a "warn" verb
923 was being output only once per connection, rather than after each
924 occurrence (because it was using the same function as for successful
925 "warn" verbs). This seems wrong, so I have changed it.
926
87ba3f5f
PH
927TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
928 it should not have, which might have caused a crash in the right
929 circumstances, but probably never did.
930
931PH/04 Installed a modified version of Tony Finch's patch to make submission
932 mode fix the return path as well as the Sender: header line, and to
933 add a /name= option so that you can make the user's friendly name appear
934 in the header line.
935
29aba418
TF
936TF/03 Added the control = fakedefer ACL modifier.
937
fe0dab11
TF
938TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
939 Mark Lowes for thorough testing.
870f6ba8 940
11d337a4
TK
941TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
942
943TK/03 Merged latest SRS patch from Miles Wilton.
944
415c8f3b
PH
945PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
946 with the definition in sysexits.h (which is #included earlier).
947 Fortunately, Exim does not actually use EX_OK. The code used to try to
948 preserve the sysexits.h value, by assumimg that macro definitions were
949 scanned for macro replacements. I have been disabused of this notion,
950 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 951
958541e9
PH
952PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
953 in the smtp transport. When a block could not be written in a single
954 write() function, the timeout was being re-applied to each part-write.
955 This seems wrong - if the receiver was accepting one byte at a time it
956 would take for ever. The timeout is now adjusted when this happens. It
957 doesn't have to be particularly precise.
958
c206415f
TK
959TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
960 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
961
2a4be8f9
PH
962PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
963 without a domain if the check to <postmaster@domain> fails.
964
1cba11c5
SC
965SC/01 Eximstats: added -xls and the ability to specify output files
966 (patch written by Frank Heydlauf).
967
968SC/02 Eximstats: use FileHandles for outputing results.
969
970SC/03 Eximstats: allow any combination of xls, txt, and html output.
971
972SC/04 Eximstats: fixed display of large numbers with -nvr option
973
974SC/05 Eximstats: fixed merging of reports with empty tables.
975
976SC/06 Eximstats: added the -include_original_destination flag
977
978SC/07 Eximstats: removed tabs and trailing whitespace.
979
1005d00e
TK
980TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
981
982TK/06 MBOX spool code: Add real "From " MBOX separator line
983 so the .eml file is really in mbox format (even though
984 most programs do not really care). Patch from Alex Miller.
985
986TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
987 The latter is generated from $received_to and is only set if the
988 message has one envelope recipient. SA can use these headers,
989 obviously out-of-the-box. Patch from Alex Miller.
990
9b4768fa
PH
991PH/08 The ${def test on a variable was returning false if the variable's
992 value was "0", contrary to what the specification has always said!
993 The result should be true unless the variable is empty.
994
995PH/09 The syntax error of a character other than { following "${if
996 def:variable_name" (after optional whitespace) was not being diagnosed.
997 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
998 accidental colon was present, for example, could give incorrect results.
999
0d7eb84a
PH
1000PH/10 Tidied the code in a number of places where the st_size field of a stat()
1001 result is used (not including appendfile, where other changes are about
1002 to be made).
1003
1004PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1005 This involved changing a lot of size variables from int to off_t. It
1006 should work with maildirs and everything.
1007
40727bee
TK
1008TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1009 spamd dying while we are connected to it.
1010
554d2369
TF
1011TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1012 <jgh@wizmail.org>
1013
1f922db1
PH
1014PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1015 function for BDB 4.3.
1016
ef213c3b
PH
1017PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1018
8ac170f3
PH
1019PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1020 the sources for PCRE have been re-arranged and more files are now
1021 involved.
1022
b1c749bb
PH
1023PH/15 The code I had for printing potentially long long variables in PH/11
1024 above was not the best (it lost precision). The length of off_t variables
1025 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1026 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1027 to be "long long int" or "long int". This is needed for the internal
1028 formatting function string_vformat().
b1c749bb 1029
4aac9b49
PH
1030PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1031 the configuration file to be ":syslog", then the script "guesses" where
1032 the logs files are, rather than using the compiled in default. In our
1033 case the guess is not the same as the compiled default, so the script
1034 suddenly stopped working when I started to use syslog. The patch checks
1035 to see if log_file_path is "". If so, it attempts to read it from exim
1036 with no configuration file to get the compiled in version, before it
1037 falls back to the previous guessing code."
1038
294520c8
TK
1039TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1040 implementing BATV in an Exim configuration. See NewStuff for the gory
1041 details.
1042
5bd022fe
PH
1043PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1044 Makefile that are specific to HP-UX.
1045
90e9ce59
PH
1046PH/18 If the "use_postmaster" option was set for a recipient callout together
1047 with the "random" option, the postmaster address was used as the MAIL
1048 FROM address for the random test, but not for the subsequent recipient
1049 test. It is now used for both.
1050
5ea81592
PH
1051PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1052 patch removes a few documentation additions to RFC 3028, because the
1053 latest draft now contains them. It adds the new en;ascii-case comparator
1054 and a new error check for 8bit text in MIME parts. Comparator and
1055 require names are now matched exactly. I enabled the subaddress
1056 extension, but it is not well tested yet (read: it works for me)."
1057
c6c2dc1d
PH
1058PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1059 rework some of the code of TK/09 above to avoid the hardwired use of
1060 "%lld" and "long long". Replaced the call to snprintf() with a call to
1061 string_vformat().
1062
fffffe4c
PH
1063PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1064 records point to non-existent hosts", "retry timeout exceeded", and
1065 "retry time not reached for any host after a long failure period".
ca02eafb 1066
9a26b6b2
PH
1067PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1068 experimental DomainKeys support:
1069
1070 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1071 (2) On an error such as an illegally used "control", the wrong name for
1072 the control was given.
1073
1074 These problems did NOT occur unless DomainKeys support was compiled.
1075
4aee0225
PH
1076PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1077
32d668a5
PH
1078PH/24 Added ${if match_ip condition.
1079
8187c3f3
PH
1080PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1081 databases so that it will be absolutely obvious if a crash occurs in the
1082 DB library. This is a regular occurrence (often caused by mis-matched
1083 db.h files).
1084
ff790e47 1085PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1086 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1087 picked up on a user's system that detects such things. There doesn't seem
1088 to be a gcc warning option for this - only an attribute that has to be
1089 put on the function's prototype. It seems that in Fedora Core 4 they have
1090 set this on a number of new functions. No doubt there will be more in due
1091 course.
ff790e47 1092
5417f6d1
PH
1093PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1094 specify a transport. However, if an address that was verified by such a
1095 router was the subject of a callout, Exim crashed because it tried to
1096 read the rcpt_include_affixes from the non-existent transport. Now it
1097 just assumes that the setting of that option is false. This bug was
1098 introduced by 4.51/PH/31.
1099
59cf8544
PH
1100PH/28 Changed -d+all to exclude +memory, because that information is very
1101 rarely of interest, but it makes the output a lot bigger. People tend to
1102 do -d+all out of habit.
1103
e7ad8a65
PH
1104PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1105 code in os-type was giving problems when libc.so lives in lib64, like on
1106 x86_64 Fedora Core.
1107
ade42478
PH
1108PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1109 aren't the modern standard, and it seems that some systems' include files
1110 don't always have them. Exim was already checking for some of the newer
1111 ones like T_AAAA, and defining it itself. I've added checks for all the
1112 record types that Exim uses.
1113
182ad5cf
PH
1114PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1115 not automatically generating a new one, as it is supposed to. This
1116 prevented TLS from working. If the file did exist, but contained invalid
1117 data, a new version was generated, as expected. It was only the case of a
1118 non-existent file that was broken.
1119
b0d9fc80
TK
1120TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1121 with a change in libdomainkeys > 0.64.
1122
1123TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1124 from DNS. If the selector record carries the flag, it now has
1125 precedence over the domain-wide flag.
1126
1127TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1128
47c7a64a
PH
1129PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1130 the use of a port name that isn't defined in /etc/services) occurred, the
1131 message was deferred as in a normal delivery, and thus remained on the
1132 spool, instead of being failed because of the mua_wrapper setting. This
1133 is now fixed, and I tidied up some of the mua_wrapper messages at the
1134 same time.
1135
a388bce4
SC
1136SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1137 the messages in a hash of arrays rather than using individual hashes.
1138 This is a bit cleaner and results in dramatic memory savings, albeit
1139 at a slight CPU cost.
1140
1141SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1142 as requested by Marc Sherman.
1143
1144SC/10 Eximstats: added histograms for user specified patterns as requested
1145 by Marc Sherman.
1146
0793e4ed
SC
1147SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1148
c58b88df
PH
1149PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1150 fopen() in the content-scanning modules that did not already have it.
1151
e7ad8a65 1152
7982096b
PH
1153Exim version 4.51
1154-----------------
1155
1a46a8c5
PH
1156TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1157 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1158
2f079f46 1159TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1160
1161TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1162
1163PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1164 to test Sieve filters that use "vacation".
1165
1166PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1167 that changes the way the GnuTLS parameters are stored in the cache file.
1168 The new format can be generated externally. For backward compatibility,
1169 if the data in the cache doesn't make sense, Exim assumes it has read an
1170 old-format file, and it generates new data and writes a new file. This
1171 means that you can't go back to an older release without removing the
1172 file.
1173
1174PH/03 A redirect router that has both "unseen" and "one_time" set does not
1175 work if there are any delivery delays because "one_time" forces the
1176 parent to be marked "delivered", so its unseen clone is never tried
1177 again. For this reason, Exim now forbids the simultaneous setting of
1178 these two options.
1179
1180PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1181 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1182 entry if you want to know the details. The fix, however, neglected to
1183 consider the case when local delivery batching is involved. The test for
1184 "previously delivered" was not happening when checking to see if an
1185 address could be batched with a previous (undelivered) one; under
1186 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1187 address.
1a46a8c5
PH
1188
1189PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1190 in its include files, and this causes problems building Exim.
1191
1192PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1193 header_syntax) but Exim was just ignoring anything given after a slash.
1194 In particular, this caused confusion with an attempt to use "verify =
1195 reverse_host_lookup/defer_ok". An error is now given when options are
1196 supplied for verify items that do not have them. (Maybe reverse_host_
1197 lookup should have a defer_ok option, but that's a different point.)
1198
1199PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1200 defined by RFC 821) to 2048, because there were problems with some AUTH
1201 commands, and RFC 1869 says the size should be increased for extended
1202 SMTP commands that take arguments.
1203
1204PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1205 Finch).
1206
1207PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1208 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1209
49c2d5ea
PH
1210PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1211 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1212 whatever). Otherwise the password may appear in the log. Following change
1213 PH/42 below, there is no longer a chance of it appearing in a bounce
1214 message.
49c2d5ea 1215
bf759a8b
PH
1216PH/11 Installed exipick version 20050225.0 from John Jetmore.
1217
83364d30
PH
1218PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1219 of its addresses was ever tried. (Bugzilla bug #2.)
1220
7999bbd7
PH
1221PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1222 the result incorrectly in the debug output. (It correctly added a newline
1223 to what was transported.)
1224
7dbf77c9
PH
1225TF/01 Added $received_time.
1226
74e0617f
PH
1227PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1228 commented out examples of how to interface to a virus scanner and to
1229 SpamAssassin. Also added commented examples of av_scanner and
1230 spamd_address settings.
1231
2f079f46
PH
1232PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1233 and controls are allowed in which ACLs. There were a couple of minor
1234 errors. Some of the entries in the conditions table (which is a table of
1235 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1236 negation of where the condition IS allowed.
1237
8c841523
PH
1238PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1239
7766a4f0
PH
1240PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1241 header file does not have a version number, so I've had to invent a new
1242 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1243 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1244 radiusclient), but it was contributed by a Radius user.
1245
8b417f2c
PH
1246PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1247 files or directories, for OpenSSL.
1248
901f42cb
PH
1249PH/19 When an Exim process that is running as root has to create an Exim log
1250 file, it does so in a subprocess that runs as exim:exim so as to get the
1251 ownership right at creation (otherwise, other Exim processes might see
1252 the file with the wrong ownership). There was no test for failure of this
1253 fork() call, which would lead to the process getting stuck as it waited
1254 for a non-existent subprocess. Forks do occasionally fail when resources
1255 run out. I reviewed all the other calls to fork(); they all seem to check
1256 for failure.
1257
f9b9210e
PH
1258PH/20 When checking for unexpected SMTP input at connect time (before writing
1259 the banner), Exim was not dealing correctly with a non-positive return
1260 from the read() function. If the client had disconnected by this time,
1261 the result was a log entry for a synchronization error with an empty
1262 string after "input=" when read() returned zero. If read() returned -1
1263 (an event I could not check), uninitialized data bytes were printed.
1264 There were reports of junk text (parts of files, etc) appearing after
1265 "input=".
1266
54cdb463
PH
1267PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1268
cf00dad6
PH
1269PH/22 Added support for macro redefinition, and (re)definition in between
1270 driver and ACL definitions.
1271
acb1b346
PH
1272PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1273 forgetting to use the resulting value; it was using the unexpanded value.
1274
c5ddb310
PH
1275PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1276 hadn't been configured. The fix is from Juergen Kreileder, who
1277 understands it better than I do:
1278
1279 "Here's what I see happening with three configured cyrus_sasl
1280 authenticators configured (plain, login, cram-md5):
1281
1282 On startup auth_cyrus_sasl_init() gets called for each of these.
1283 This means three calls to sasl_listmech() without a specified mech_list.
1284 => SASL tests which mechs of all available mechs actually work
1285 => three warnings about OTP not working
1286 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1287
1288 With the patch, sasl_listmech() also gets called three times. But now
1289 SASL's mech_list option is set to the server_mech specified in the the
1290 authenticator. Or in other words, the answer from sasl_listmech()
1291 gets limited to just the mech you're testing for (which is different
1292 for each call.)
1293 => the return list contains just 'plain' or 'login', 'cram-md5' or
1294 nothing depending on the value of ob->server_mech.
1295
1296 I've just tested the patch: Authentication still works fine,
1297 unavailable mechs specified in the exim configuration are still
1298 caught, and the auth.log warnings about OTP are gone."
1299
31619da6
PH
1300PH/25 When debugging is enabled, the contents of the command line are added
1301 to the debugging output, even when log_selector=+arguments is not
1302 specified.
1303
bebaf0fc
PH
1304PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1305 answer is "GNU", and only if the return is "GNU/something" is the answer
1306 "Linux".
1307
475fe28a
PH
1308PH/27 $acl_verify_message is now set immediately after the failure of a
1309 verification in an ACL, and so is available in subsequent modifiers. In
1310 particular, the message can be preserved by coding like this:
1311
1312 warn !verify = sender
1313 set acl_m0 = $acl_verify_message
1314
1315 Previously, $acl_verify_message was set only while expanding "message"
1316 and "log_message" when a very denied access.
1317
7e8bec7a
PH
1318PH/28 Modified OS/os.c-Linux with
1319
1320 -#ifndef OS_LOAD_AVERAGE
1321 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1322
1323 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1324 nomenclature these days.)
1325
e4a89c47
PH
1326PH/29 Installed patch from the Sieve maintainer that adds the options
1327 sieve_useraddress and sieve_subaddress to the redirect router.
1328
5ca2a9a1
PH
1329PH/30 In these circumstances:
1330 . Two addresses routed to the same list of hosts;
1331 . First host does not offer TLS;
1332 . First host accepts first address;
1333 . First host gives temporary error to second address;
1334 . Second host offers TLS and a TLS session is established;
1335 . Second host accepts second address.
1336 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1337 and peerdn, if requested) that were in fact used only for the second
1338 address.
7e8bec7a 1339
c688b954
PH
1340PH/31 When doing a callout as part of verifying an address, Exim was not paying
1341 attention to any local part prefix or suffix that was matched by the
1342 router that accepted the address. It now behaves in the same way as it
1343 does for delivery: the affixes are removed from the local part unless
1344 rcpt_include_affixes is set on the transport.
1345
fed77020
PH
1346PH/32 Add the sender address, as F=<...>, to the log line when logging a
1347 timeout during the DATA phase of an incoming message.
1348
7fe1560f
PH
1349PH/33 Sieve envelope tests were broken for match types other than :is. I have
1350 applied a patch sanctioned by the Sieve maintainer.
c688b954 1351
ebb6e6d5
PH
1352PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1353 the uid or gid is negative. A case of a negative gid caused this to be
1354 noticed. The fix allows for either to be negative.
1355
9c4e8f60
PH
1356PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1357 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1358 overlooked.
1359
1360PH/36 The change PH/12 above was broken. Fixed it.
1361
d7174846
PH
1362PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1363 the grounds that routing the same address twice would always produce the
1364 same answer. This might have been true once, but it is certainly no
1365 longer true now. Routing a child address may depend on the previous
1366 routing that produced that child. Some complicated redirection strategies
1367 went wrong when messages had multiple recipients, and made Exim's
1368 behaviour dependent on the order in which the addresses were given.
1369
1370 I have moved the duplicate checking until after the routing is complete.
1371 Exim scans the addresses that are assigned to local and remote
1372 transports, and removes any duplicates. This means that more work will be
1373 done, as duplicates will always all be routed, but duplicates are
1374 presumably rare, so I don't expect this is of any significance.
1375
1376 For deliveries to pipes, files, and autoreplies, the duplicate checking
1377 still happens during the routing process, since they are not going to be
1378 routed further.
1379
cfe75fc3
PH
1380PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1381 It corrects a timeout issue with spamd. This is Ian's comment: "The
1382 background is that sometimes spamd either never reads data from a
1383 connection it has accepted, or it never writes response data. The exiscan
1384 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1385 blindly assumes that writes won't block so it may never time out."
1386
be22d70e
PH
1387PH/39 Allow G after quota size as well as K and M.
1388
0612b098
PH
1389PH/40 The value set for $authenticated_id in an authenticator may not contain
1390 binary zeroes or newlines because the value is written to log lines and
1391 to spool files. There was no check on this. Now the value is run through
1392 the string_printing() function so that such characters are converted to
1393 printable escape sequences.
1394
2e0c1448
PH
1395PH/41 $message_linecount is a new variable that contains the total number of
1396 lines in the message. Compare $body_linecount, which is the count for the
1397 body only.
1398
447d236c
PH
1399PH/42 Exim no longer gives details of delivery errors for specific addresses in
1400 bounce and delay warning messages, except in certain special cases, which
1401 are as follows:
1402
1403 (a) An SMTP error message from a remote host;
1404 (b) A message specified in a :fail: redirection;
1405 (c) A message specified in a "fail" command in a system filter;
1406 (d) A message specified in a FAIL return from the queryprogram router;
1407 (e) A message specified by the cannot_route_message router option.
1408
1409 In these cases only, Exim does include the error details in bounce and
1410 warning messages. There are also a few cases where bland messages such
1411 as "unrouteable address" or "local delivery error" are given.
1412
d20976dc
PH
1413PH/43 $value is now also set for the "else" part of a ${run expansion.
1414
f656d135
PH
1415PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1416 being worked on, but at least Exim now implements the latest version to
1417 play with."
1418
2e2a30b4
PH
1419PH/45 In a pipe transport, although a timeout while waiting for the pipe
1420 process to complete was treated as a delivery failure, a timeout while
1421 writing the message to the pipe was logged, but erroneously treated as a
1422 successful delivery. Such timeouts include transport filter timeouts. For
1423 consistency with the overall process timeout, these timeouts are now
1424 treated as errors, giving rise to delivery failures by default. However,
1425 there is now a new Boolean option for the pipe transport called
1426 timeout_defer, which, if set TRUE, converts the failures into defers for
1427 both kinds of timeout. A transport filter timeout is now identified in
1428 the log output.
1429
9176e9f0
PH
1430PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1431 systems where "make" and "gmake" are different, calling "gmake" at top
1432 level broke things. I've arranged for the value of $(MAKE) to be passed
1433 from the Makefile to this script so that it can call the same version of
1434 "make".
1435
7982096b 1436
bbe902f0
PH
1437A note about Exim versions 4.44 and 4.50
1438----------------------------------------
1439
1440Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1441changes of various kinds. As a consequence, a big documentation update was
1442needed. This delayed the release for rather longer than seemed good, especially
1443in the light of a couple of (minor) security issues. Therefore, the changes
1444that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1445release. So 4.44 and 4.50 are in effect two different branches that both start
1446from 4.43.
1447
1448I have left the 4.50 change log unchanged; it contains all the changes since
14494.43. The change log for 4.44 is below; many of its items are identical to
1450those for 4.50. This seems to be the most sensible way to preserve the
1451historical information.
1452
1453
f7b63901 1454Exim version 4.50
495ae4b0
PH
1455-----------------
1456
5fe762f6
PH
1457 1. Minor wording change to the doc/README.SIEVE file.
1458
139059f6 1459 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1460 computation of the current number of files was incorrect.
495ae4b0 1461
7086e875
PH
1462 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1463 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1464 place.
1465
35af9f61
PH
1466 4. Give more explanation in the error message when the command for a transport
1467 filter fails to execute.
1468
b668c215
PH
1469 5. There are several places where Exim runs a non-Exim command in a
1470 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1471 was being done only for the command run by the queryprogram router. It is
1472 now done for all such subprocesses. The other cases are: ${run, transport
1473 filters, and the commands run by the lmtp and pipe transports.
1474
a494b1e1
PH
1475 6. Added CONFIGURE_GROUP build-time option.
1476
1477 7. Some older OS have a limit of 256 on the maximum number of file
1478 descriptors. Exim was using setrlimit() to set 1000 as a large value
1479 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1480 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1481
c5fcb476
PH
1482 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1483 was an oversight, and furthermore, ever since the addition of extra
1484 controls (e.g. 4.43/32), the checks on when to allow different forms of
1485 "control" were broken. There should now be diagnostics for all cases when a
1486 control that does not make sense is encountered.
1487
69358f02
PH
1488 9. Added the /retain_sender option to "control=submission".
1489
5be20824
PH
149010. $recipients is now available in the predata ACL (oversight).
1491
eb2c0248
PH
149211. Tidy the search cache before the fork to do a delivery from a message
1493 received from the command line. Otherwise the child will trigger a lookup
1494 failure and thereby defer the delivery if it tries to use (for example) a
1495 cached ldap connection that the parent has called unbind on.
1496
2a3eea10
PH
149712. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1498 of $address_data from the recipient verification was clobbered by the
1499 sender verification.
1500
150113. The value of address_data from a sender verification is now available in
1502 $sender_address_data in subsequent conditions in the ACL statement.
1503
23c7ff99
PH
150414. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1505
4deaf07d
PH
150615. Added a new option "connect=<time>" to callout options, to set a different
1507 connection timeout.
1508
926e1192
PH
150916. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1510 was its contents. (It was OK if the option was not defined at all.)
1511
650edc6f
PH
151217. A "Completed" log line is now written for messages that are removed from
1513 the spool by the -Mrm option.
1514
2c7db3f5
PH
151518. New variables $sender_verify_failure and $recipient_verify_failure contain
1516 information about exactly what failed.
1517
3d235903
PH
151819. Added -dd to debug only the daemon process.
1519
7c7ad977
PH
152020. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1521 handles timeouts, both on the server side and network timeouts. Renamed the
1522 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1523
981756db
PH
152421. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1525 It is now set to "smtps".
1526
d4eb88df
PH
152722. $host_address is now set to the target address during the checking of
1528 ignore_target_hosts.
1529
153023. When checking ignore_target_hosts for an ipliteral router, no host name was
1531 being passed; this would have caused $sender_host_name to have been used if
1532 matching the list had actually called for a host name (not very likely,
1533 since this list is usually IP addresses). A host name is now passed as
1534 "[x.x.x.x]".
1535
7d468ab8
PH
153624. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1537 code that specifies a non-restarting handler (typically sigaction() in
1538 modern systems) in an attempt to fix a rare and obscure crash bug.
1539
154025. Narrowed the window for a race in the daemon that could cause it to ignore
1541 SIGCHLD signals. This is not a major problem, because they are used only to
1542 wake it up if nothing else does.
1543
62c0818f
PH
154426. A malformed maildirsize file could cause Exim to calculate negative values
1545 for the mailbox size or file count. Odd effects could occur as a result.
1546 The maildirsize information is now recalculated if the size or filecount
1547 end up negative.
1548
26034054
PH
154927. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1550 support for a long time. Removed HAVE_SYS_VFS_H.
1551
af66f652
PH
155228. Installed the latest version of exipick from John Jetmore.
1553
90af77f4
PH
155429. In an address list, if the pattern was not a regular expression, an empty
1555 subject address (from a bounce message) matched only if the pattern was an
1556 empty string. Non-empty patterns were not even tested. This was the wrong
1557 because it is perfectly reasonable to use an empty address as part of a
1558 database query. An empty address is now tested by patterns that are
1559 lookups. However, all the other forms of pattern expect the subject to
1560 contain a local part and a domain, and therefore, for them, an empty
1561 address still always fails if the pattern is not itself empty.
1562
d8ef3577
PH
156330. Exim went into a mad DNS loop when attempting to do a callout where the
1564 host was specified on an smtp transport, and looking it up yielded more
1565 than one IP address.
1566
5cb8cbc6
PH
156731. Re-factored the code for checking spool and log partition space into a
1568 function that finds that data and another that does the check. The former
1569 is then used to implement four new variables: $spool_space, $log_space,
1570 $spool_inodes, and $log_inodes.
1571
14702f5b
PH
157232. The RFC2047 encoding function was originally intended for short strings
1573 such as real names; it was not keeping to the 75-character limit for
1574 encoded words that the RFC imposes. It now respects the limit, and
1575 generates multiple encoded words if necessary. To be on the safe side, I
1576 have increased the buffer size for the ${rfc2047: expansion operator from
1577 1024 to 2048 bytes.
1578
063b1e99
PH
157933. It is now permitted to omit both strings after an "if" condition; if the
1580 condition is true, the result is "true". As before, when the second string
1581 is omitted, a false condition yields an empty string. This makes it less
1582 cumbersome to write custom ACL and router conditions.
1583
652e1b65
PH
158434. Failure to deliver a bounce message always caused it to be frozen, even if
1585 there was an errors_to setting on the router. The errors_to setting is now
1586 respected.
1587
6f0c9a4f
PH
158835. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1589 canonical form (fully expanded) before being placed in
1590 $sender_host_address.
1591
33397d19
PH
159236. The table in the code that translates DNS record types into text (T_A to
1593 "A" for instance) was missing entries for NS and CNAME. It is just possible
1594 that this could have caused confusion if both these types were looked up
1595 for the same domain, because the text type is used as part of Exim's
1596 per-process caching. But the chance of anyone hitting this buglet seems
1597 very small.
1598
7bb56e1f
PH
159937. The dnsdb lookup has been extended in a number of ways.
1600
1601 (1) There is a new type, "zns", which walks up the domain tree until it
1602 finds some nameserver records. It should be used with care.
1603
ea3bc19b
PH
1604 (2) There is a new type, "mxh", which is like "mx" except that it returns
1605 just the host names, not the priorities.
1606
1607 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1608 looked up. The behaviour when one of the lookups defers can be
1609 controlled by a keyword.
7bb56e1f 1610
ea3bc19b 1611 (4) It is now possible to specify the separator character for use when
7bb56e1f 1612 multiple records are returned.
33397d19 1613
0bcb2a0e
PH
161438. The dnslists ACL condition has been extended: it is now possible to supply
1615 a list of IP addresses and/or domains to be looked up in a particular DNS
1616 domain.
1617
2ac0e484
PH
161839. Added log_selector=+queue_time_overall.
1619
4e1fde53
PH
162040. When running the queue in the test harness, wait just a tad after forking a
1621 delivery process, to get repeatability of debugging output.
1622
de365ded
PH
162341. Include certificate and key file names in error message when GnuTLS fails
1624 to set them up, because the GnuTLS error message doesn't include the name
1625 of the failing file when there is a problem reading it.
1626
f05da2e8
PH
162742. Allow both -bf and -bF in the same test run.
1628
d6453af2
PH
162943. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1630
f7b63901
PH
163144. The "Exiscan patch" is now merged into the mainline Exim source.
1632
163345. Sometimes the final signoff response after QUIT could fail to get
1634 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1635 < 0 before doing a fflush(). This bug looks as though it goes back to the
1636 introduction of TLS in release 3.20, but "sometimes" must have been rare
1637 because the tests only now provoked it.
1638
a444213a
PH
163946. Reset the locale to "C" after calling embedded Perl, in case it was changed
1640 (this can affect the format of dates).
1641
0ec020ea
PH
164247. exim_tidydb, when checking for the continued existence of a message for
1643 which it has found a message-specific retry record, was not finding
1644 messages that were in split spool directories. Consequently, it was
1645 deleting retry records that should have stayed in existence.
1646
b1206957
PH
164748. Steve fixed some bugs in eximstats.
1648
164949. The SPA authentication driver was not abandoning authentication and moving
1650 on to the next authenticator when an expansion was forced to fail,
1651 contradicting the general specification for all authenticators. Instead it
1652 was generating a temporary error. It now behaves as specified.
1653
26dd5a95
PH
165450. The default ordering of permitted cipher suites for GnuTLS was pessimal
1655 (the order specifies the preference for clients). The order is now AES256,
1656 AES128, 3DES, ARCFOUR128.
1657
343b2385
PH
165851. Small patch to Sieve code - explicitly set From: when generating an
1659 autoreply.
1660
1c5466b9
PH
166152. Exim crashed if a remote delivery caused a very long error message to be
1662 recorded - for instance if somebody sent an entire SpamAssassin report back
1663 as a large number of 550 error lines. This bug was coincidentally fixed by
1664 increasing the size of one of Exim's internal buffers (big_buffer) that
1665 happened as part of the Exiscan merge. However, to be on the safe side, I
1666 have made the code more robust (and fixed the comments that describe what
1667 is going on).
1668
55ee9ee3
PH
166953. Now that there can be additional text after "Completed" in log lines (if
1670 the queue_time_overall log selector is set), a one-byte patch to exigrep
1671 was needed to allow it to recognize "Completed" as not the last thing in
1672 the line.
1673
d38f8232
PH
167454. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1675 patch that reportedly fixes this has been added. I am not expert enough to
1676 create a test for it. This is what the patch creator wrote:
1677
1678 "I found a little strange behaviour of ldap code when working with
1679 Windows 2003 AD Domain, where users was placed in more than one
1680 Organization Units. When I tried to give exim partial DN, the exit code
1681 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1682 But simultaneously result of request was absolutely normal ldap result,
1683 so I produce this patch..."
1684
3295e65b
PH
1685 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1686 REFERENCE, so I have modified the code to exclude the patch when that macro
1687 is not defined.
1688
7102e136
PH
168955. Some experimental protocols are using DNS PTR records for new purposes. The
1690 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1691 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1692 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1693 CAN-2005-0021
7102e136 1694
3ca0ba97
PH
169556. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1696
c2bcbe20
PH
169757. Double the size of the debug message buffer (to 2048) so that more of very
1698 long debug lines gets shown.
1699
18ce445d
PH
170058. The exicyclog utility now does better if the number of log files to keep
1701 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
1702
1f5b4c3d
PH
170359. Two changes related to the smtp_active_hostname option:
1704
1705 (1) $smtp_active_hostname is now available as a variable.
1706 (2) The default for smtp_banner uses $smtp_active_hostname instead
1707 of $primary_hostname.
1708
b975ba52
PH
170960. The host_aton() function is supposed to be passed a string that is known
1710 to be a valid IP address. However, in the case of IPv6 addresses, it was
1711 not checking this. This is a hostage to fortune. Exim now panics and dies
1712 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
1713 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1714 components; fortuitously, this particular loophole had already been fixed
1715 by change 4.50/55 above.
1716
1717 If there are any other similar loopholes, the new check in host_aton()
1718 itself should stop them being exploited. The report I received stated that
1719 data on the command line could provoke the exploit when Exim was running as
1720 exim, but did not say which command line option was involved. All I could
1721 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1722 running as the user.
ea3a6f44 1723 CAN-2005-0021
85b87bc2
PH
1724
172561. There was a buffer overflow vulnerability in the SPA authentication code
1726 (which came originally from the Samba project). I have added a test to the
1727 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 1728 CAN-2005-0022
b975ba52 1729
17ffcae7
PH
173062. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
1731 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
1732
d95f9fdb
PH
173363. The daemon start-up calls getloadavg() while still root for those OS that
1734 need the first call to be done as root, but it missed one case: when
1735 deliver_queue_load_max is set with deliver_drop_privilege. This is
1736 necessary for the benefit of the queue runner, because there is no re-exec
1737 when deliver_drop_privilege is set.
1738
86b8287f
PH
173964. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
1740 This has been fixed.
1741
60dc5e56
PH
174265. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1743 was in use, was not putting the data itself into the right store pool;
1744 consequently, it could be overwritten for a subsequent message in the same
1745 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1746 the caching.)
1747
533244af
PH
174866. Added hosts_max_try_hardlimit to the smtp transport, default 50.
1749
a5a28604
PH
175067. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
1751 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
1752 the function were treating the return as a boolean value, which happened to
1753 work because 0=false and not-0=true, but is not correct code.
1754
7e634d24
PH
175568. The host_aton() function was not handling scoped IPv6 addresses (those
1756 with, for example, "%eth0" on the end) correctly.
1757
3e11c26b
PH
175869. Fixed some compiler warnings in acl.c for the bitmaps specified with
1759 negated items (that is, ~something) in unsigned ints. Some compilers
1760 apparently mutter when there is no cast.
1761
6729cf78
PH
176270. If an address verification called from an ACL failed, and did not produce a
1763 user-specific message (i.e. there was only a "system" message), nothing was
1764 put in $acl_verify_message. In this situation, it now puts the system
1765 message there.
1766
00f00ca5
PH
176771. Change 4.23/11 added synchronization checking at the start of an SMTP
1768 session; change 4.31/43 added the unwanted input to the log line - except
1769 that it did not do this in the start of session case. It now does.
1770
c9bdd01c
PH
177172. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
1772 This is wrong and can cause the other end to generate a synchronization
1773 error if it is another Exim or anything else that does the synchronization
1774 check. A QUIT command is no longer sent after a timeout.
1775
d43194df
PH
177673. $host_lookup_deferred has been added, to make it easier to detect DEFERs
1777 during host lookups.
1778
fe5b5d0b
PH
177974. The defer_ok option of callout verification was not working if it was used
1780 when verifying addresses in header lines, that is, for this case:
1781
1782 verify = header_sender/callout=defer_ok
1783
76a2d7ba
PH
178475. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
1785 those file descriptors could be used for SMTP connections. If anything
1786 wrote to stderr (the example that came up was "warn" in embedded Perl), it
1787 could be sent to the SMTP client, causing chaos. The daemon now opens
1788 stdin, stdout, and stderr to /dev/null when it puts itself into the
1789 background.
1790
179176. Arrange for output from Perl's "warn" command to be written to Exim's main
1792 log by default. The user can override this with suitable Perl magic.
1793
04f7d5b9
PH
179477. The use of log_message on a "discard" ACL verb, which is supposed to add to
1795 the log message when discard triggers, was not working for the DATA ACL or
1796 for the non-SMTP ACL.
1797
bc60667e
PH
179878. Error message wording change in sieve.c.
1799
bb6e88ff
PH
180079. If smtp_accept_max_per_host was set, the number of connections could be
1801 restricted to fewer than expected, because the daemon was trying to set up
1802 a new connection before checking whether the processes handling previous
1803 connections had finished. The check for completed processes is now done
1804 earlier. On busy systems, this bug wouldn't be noticed because something
1805 else would have woken the daemon, and it would have reaped the completed
1806 process earlier.
1807
1e70f85b
PH
180880. If a message was submitted locally by a user whose login name contained one
1809 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
1810 It caused a spool format error. I have fixed the spool reading code. A
1811 related problem was that the "from" clause in the Received: line became
1812 illegal because of the space(s). It is now covered by ${quote_local_part.
1813
181481. Included the latest eximstats from Steve (adds average sizes to HTML Top
1815 tables).
1816
4e01f9d6
PH
181782. Updated OS/Makefile-AIX as per message from Mike Meredith.
1818
1ee1cef2
PH
181983. Patch from Sieve maintainer to fix unterminated string problem in
1820 "vacation" handling.
1821
6e2b4ccc
PH
182284. Some minor changes to the Linux configuration files to help with other
1823 OS variants using glibc.
1824
8e669ac1
PH
182585. One more patch for Sieve to update vacation handling to latest spec.
1826
495ae4b0 1827
bbe902f0
PH
1828----------------------------------------------------
1829See the note above about the 4.44 and 4.50 releases.
1830----------------------------------------------------
1831
1832
1833Exim version 4.44
1834-----------------
1835
1836 1. Change 4.43/35 introduced a bug that caused file counts to be
1837 incorrectly computed when quota_filecount was set in an appendfile
1838 transport
1839
1840 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1841 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1842 place.
1843
1844 3. Give more explanation in the error message when the command for a transport
1845 filter fails to execute.
1846
1847 4. There are several places where Exim runs a non-Exim command in a
1848 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1849 was being done only for the command run by the queryprogram router. It is
1850 now done for all such subprocesses. The other cases are: ${run, transport
1851 filters, and the commands run by the lmtp and pipe transports.
1852
1853 5. Some older OS have a limit of 256 on the maximum number of file
1854 descriptors. Exim was using setrlimit() to set 1000 as a large value
1855 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1856 systems. I've change it so that if it can't get 1000, it tries for 256.
1857
1858 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1859 was an oversight, and furthermore, ever since the addition of extra
1860 controls (e.g. 4.43/32), the checks on when to allow different forms of
1861 "control" were broken. There should now be diagnostics for all cases when a
1862 control that does not make sense is encountered.
1863
1864 7. $recipients is now available in the predata ACL (oversight).
1865
1866 8. Tidy the search cache before the fork to do a delivery from a message
1867 received from the command line. Otherwise the child will trigger a lookup
1868 failure and thereby defer the delivery if it tries to use (for example) a
1869 cached ldap connection that the parent has called unbind on.
1870
1871 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1872 of $address_data from the recipient verification was clobbered by the
1873 sender verification.
1874
187510. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1876 was its contents. (It was OK if the option was not defined at all.)
1877
187811. A "Completed" log line is now written for messages that are removed from
1879 the spool by the -Mrm option.
1880
188112. $host_address is now set to the target address during the checking of
1882 ignore_target_hosts.
1883
188413. When checking ignore_target_hosts for an ipliteral router, no host name was
1885 being passed; this would have caused $sender_host_name to have been used if
1886 matching the list had actually called for a host name (not very likely,
1887 since this list is usually IP addresses). A host name is now passed as
1888 "[x.x.x.x]".
1889
189014. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1891 code that specifies a non-restarting handler (typically sigaction() in
1892 modern systems) in an attempt to fix a rare and obscure crash bug.
1893
189415. Narrowed the window for a race in the daemon that could cause it to ignore
1895 SIGCHLD signals. This is not a major problem, because they are used only to
1896 wake it up if nothing else does.
1897
189816. A malformed maildirsize file could cause Exim to calculate negative values
1899 for the mailbox size or file count. Odd effects could occur as a result.
1900 The maildirsize information is now recalculated if the size or filecount
1901 end up negative.
1902
190317. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1904 support for a long time. Removed HAVE_SYS_VFS_H.
1905
ea3a6f44 190618. Updated exipick to current release from John Jetmore.
bbe902f0
PH
1907
190819. Allow an empty sender to be matched against a lookup in an address list.
1909 Previously the only cases considered were a regular expression, or an
1910 empty pattern.
1911
191220. Exim went into a mad DNS lookup loop when doing a callout where the
1913 host was specified on the transport, if the DNS lookup yielded more than
1914 one IP address.
1915
ea3a6f44
NM
191621. The RFC2047 encoding function was originally intended for short strings
1917 such as real names; it was not keeping to the 75-character limit for
1918 encoded words that the RFC imposes. It now respects the limit, and
1919 generates multiple encoded words if necessary. To be on the safe side, I
1920 have increased the buffer size for the ${rfc2047: expansion operator from
1921 1024 to 2048 bytes.
bbe902f0 1922
ea3a6f44
NM
192322. Failure to deliver a bounce message always caused it to be frozen, even if
1924 there was an errors_to setting on the router. The errors_to setting is now
1925 respected.
bbe902f0
PH
1926
192723. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1928 canonical form (fully expanded) before being placed in
1929 $sender_host_address.
1930
193124. Updated eximstats to version 1.33
1932
ea3a6f44
NM
193325. Include certificate and key file names in error message when GnuTLS fails
1934 to set them up, because the GnuTLS error message doesn't include the name
1935 of the failing file when there is a problem reading it.
bbe902f0
PH
1936
193726. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 1938 As per change 25.
bbe902f0 1939
ea3a6f44
NM
194027. Reset the locale to "C" after calling embedded Perl, in case it was changed
1941 (this can affect the format of dates).
bbe902f0 1942
ea3a6f44
NM
194328. exim_tidydb, when checking for the continued existence of a message for
1944 which it has found a message-specific retry record, was not finding
1945 messages that were in split spool directories. Consequently, it was
1946 deleting retry records that should have stayed in existence.
bbe902f0
PH
1947
194829. eximstats updated to version 1.35
1949 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
1950 1.35 - bugfix such that pie charts by volume are generated correctly
1951
ea3a6f44
NM
195230. The SPA authentication driver was not abandoning authentication and moving
1953 on to the next authenticator when an expansion was forced to fail,
1954 contradicting the general specification for all authenticators. Instead it
1955 was generating a temporary error. It now behaves as specified.
bbe902f0 1956
ea3a6f44
NM
195731. The default ordering of permitted cipher suites for GnuTLS was pessimal
1958 (the order specifies the preference for clients). The order is now AES256,
1959 AES128, 3DES, ARCFOUR128.
bbe902f0 1960
ea3a6f44
NM
196131. Small patch to Sieve code - explicitly set From: when generating an
1962 autoreply.
bbe902f0 1963
ea3a6f44
NM
196432. Exim crashed if a remote delivery caused a very long error message to be
1965 recorded - for instance if somebody sent an entire SpamAssassin report back
1966 as a large number of 550 error lines. This bug was coincidentally fixed by
1967 increasing the size of one of Exim's internal buffers (big_buffer) that
1968 happened as part of the Exiscan merge. However, to be on the safe side, I
1969 have made the code more robust (and fixed the comments that describe what
1970 is going on).
bbe902f0 1971
ea3a6f44
NM
197233. Some experimental protocols are using DNS PTR records for new purposes. The
1973 keys for these records are domain names, not reversed IP addresses. The
1974 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1975 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
1976 CAN-2005-0021
1977
ea3a6f44
NM
197834. The host_aton() function is supposed to be passed a string that is known
1979 to be a valid IP address. However, in the case of IPv6 addresses, it was
1980 not checking this. This is a hostage to fortune. Exim now panics and dies
1981 if the condition is not met. A case was found where this could be provoked
1982 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1983 components; fortuitously, this particular loophole had already been fixed
1984 by change 4.50/55 or 4.44/33 above.
1985
1986 If there are any other similar loopholes, the new check in host_aton()
1987 itself should stop them being exploited. The report I received stated that
1988 data on the command line could provoke the exploit when Exim was running as
1989 exim, but did not say which command line option was involved. All I could
1990 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1991 running as the user.
bbe902f0
PH
1992 CAN-2005-0021
1993
ea3a6f44
NM
199435. There was a buffer overflow vulnerability in the SPA authentication code
1995 (which came originally from the Samba project). I have added a test to the
1996 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
1997 CAN-2005-0022
1998
ea3a6f44
NM
199936. The daemon start-up calls getloadavg() while still root for those OS that
2000 need the first call to be done as root, but it missed one case: when
2001 deliver_queue_load_max is set with deliver_drop_privilege. This is
2002 necessary for the benefit of the queue runner, because there is no re-exec
2003 when deliver_drop_privilege is set.
bbe902f0 2004
ea3a6f44
NM
200537. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2006 was in use, was not putting the data itself into the right store pool;
2007 consequently, it could be overwritten for a subsequent message in the same
2008 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2009 the caching.)
bbe902f0 2010
ea3a6f44
NM
201138. Sometimes the final signoff response after QUIT could fail to get
2012 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2013 < 0 before doing a fflush(). This bug looks as though it goes back to the
2014 introduction of TLS in release 3.20, but "sometimes" must have been rare
2015 because the tests only now provoked it.
bbe902f0
PH
2016
2017
495ae4b0
PH
2018Exim version 4.43
2019-----------------
2020
2021 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2022 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2023 Now it returns an integer. A number of calls were still expecting a T/F
2024 return. Fortuitously, in all cases, the tests worked in OK situations,
2025 which is the norm. However, things would have gone wrong on any write
2026 failures on the smtp file descriptor. This function is used when sending
2027 messages over SMTP and also when doing verify callouts.
2028
2029 2. When Exim is called to do synchronous delivery of a locally submitted
2030 message (the -odf or -odi options), it no longer closes stderr before doing
2031 the delivery.
2032
2033 3. Implemented the mua_wrapper option.
2034
2035 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2036
2037 5. Implemented the functions header_remove(), header_testname(),
2038 header_add_at_position(), and receive_remove_recipient(), and exported them
2039 to local_scan().
2040
2041 6. If an ACL "warn" statement specified the addition of headers, Exim already
2042 inserted X-ACL-Warn: at the start if there was no header name. However, it
2043 was not making this test for the second and subsequent header lines if
2044 there were newlines in the string. This meant that an invalid header could
2045 be inserted if Exim was badly configured.
2046
2047 7. Allow an ACL "warn" statement to add header lines at the start or after all
2048 the Received: headers, as well as at the end.
2049
2050 8. Added the rcpt_4xx retry error code.
2051
2052 9. Added postmaster_mailfrom=xxx to callout verification option.
2053
205410. Added mailfrom=xxxx to the callout verification option, for verify=
2055 header_sender only.
2056
205711. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2058 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2059
206012. Inserted some casts to stop certain compilers warning when using pointer
2061 differences as field lengths or precisions in printf-type calls (mostly
2062 affecting debugging statements).
2063
206413. Added optional readline() support for -be (dynamically loaded).
2065
206614. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2067 same clock tick as a message's arrival, so that its received time was the
2068 same as the "first fail" time on the retry record, and that message
2069 remained on the queue past the ultimate address timeout, every queue runner
2070 would try a delivery (because it was past the ultimate address timeout) but
2071 after another failure, the ultimate address timeout, which should have then
2072 bounced the address, did not kick in. This was a "< instead of <=" error;
2073 in most cases the first failure would have been in the next clock tick
2074 after the received time, and all would be well.
2075
207615. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2077 being recognized when the domain list was tested by the match_domain
2078 condition in an expansion string.
2079
208016. Added the ${str2b64: operator.
2081
208217. Exim was always calling setrlimit() to set a large limit for the number of
2083 processes, without checking whether the existing limit was already
2084 adequate. (It did check for the limit on file descriptors.) Furthermore,
2085 errors from getrlimit() and setrlimit() were being ignored. Now they are
2086 logged to the main and panic logs, but Exim does carry on, to try to do its
2087 job under whatever limits there are.
2088
208918. Imported PCRE 5.0.
2090
209119. Trivial typo in log message " temporarily refused connection" (the leading
2092 space).
2093
209420. If the log selector return_path_on_delivery was set and an address was
2095 redirected to /dev/null, the delivery process crashed because it assumed
2096 that a return path would always be set for a "successful" delivery. In this
2097 case, the whole delivery is bypassed as an optimization, and therefore no
2098 return path is set.
2099
210021. Internal re-arrangement: the function for sending a challenge and reading
2101 a response while authentication was assuming a zero-terminated challenge
2102 string. It's now changed to take a pointer and a length, to allow for
2103 binary data in such strings.
2104
210522. Added the cyrus_sasl authenticator (code supplied by MBM).
2106
210723. Exim was not respecting finduser_retries when seeking the login of the
2108 uid under which it was called; it was always trying 10 times. (The default
2109 setting of finduser_retries is zero.) Also, it was sleeping after the final
2110 failure, which is pointless.
2111
211224. Implemented tls_on_connect_ports.
2113
211425. Implemented acl_smtp_predata.
2115
211626. If the domain in control=submission is set empty, Exim assumes that the
2117 authenticated id is a complete email address when it generates From: or
2118 Sender: header lines.
2119
212027. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2121 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2122 chown and chgrp in /bin and hostname in /usr/bin.
2123
212428. Exim was keeping the "process log" file open after each use, just as it
2125 does for the main log. This opens the possibility of it remaining open for
2126 long periods when the USR1 signal hits a daemon. Occasional processlog
2127 errors were reported, that could have been caused by this. Anyway, it seems
2128 much more sensible not to leave this file open at all, so that is what now
2129 happens.
2130
213129. The long-running daemon process does not normally write to the log once it
2132 has entered its main loop, and it closes the log before doing so. This is
2133 so that log files can straightforwardly be renamed and moved. However,
2134 there are a couple of unusual error situations where the daemon does write
2135 log entries, and I had neglected to close the log afterwards.
2136
213730. The text of an SMTP error response that was received during a remote
2138 delivery was being truncated at 512 bytes. This is too short for some of
2139 the long messages that one sometimes sees. I've increased the limit to
2140 1024.
2141
214231. It is now possible to make retry rules that apply only when a message has a
2143 specific sender, in particular, an empty sender.
2144
214532. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2146 it possible to be selective about when SMTP synchronization is enforced.
2147
214833. Added "control = caseful_local_part" and "control = "caselower_local_part".
2149
215032. Implemented hosts_connection_nolog.
2151
215233. Added an ACL for QUIT.
2153
215434. Setting "delay_warning=" to disable warnings was not working; it gave a
2155 syntax error.
2156
215735. Added mailbox_size and mailbox_filecount to appendfile.
2158
215936. Added control = no_multiline_responses to ACLs.
2160
216137. There was a bug in the logic of the code that waits for the clock to tick
2162 in the case where the clock went backwards by a substantial amount such
2163 that the microsecond fraction of "now" was more than the microsecond
2164 fraction of "then" (but the whole seconds number was less).
2165
216638. Added support for the libradius Radius client library this is found on
2167 FreeBSD (previously only the radiusclient library was supported).
2168
2169
2170Exim version 4.42
2171-----------------
2172
2173 1. When certain lookups returned multiple values in the form name=value, the
2174 quoting of the values was not always being done properly. Specifically:
2175 (a) If the value started with a double quote, but contained no whitespace,
2176 it was not quoted.
2177 (b) If the value contained whitespace other than a space character (i.e.
2178 tabs or newlines or carriage returns) it was not quoted.
2179 This fix has been applied to the mysql and pgsql lookups by writing a
2180 separate quoting function and calling it from the lookup code. The fix
2181 should probably also be applied to nisplus, ibase and oracle lookups, but
2182 since I cannot test any of those, I have not disturbed their existing code.
2183
2184 2. A hit in the callout cache for a specific address caused a log line with no
2185 reason for rejecting RCPT. Now it says "Previous (cached) callout
2186 verification failure".
2187
2188 3. There was an off-by-one bug in the queryprogram router. An over-long
2189 return line was truncated at 256 instead of 255 characters, thereby
2190 overflowing its buffer with the terminating zero. As well as fixing this, I
2191 have increased the buffer size to 1024 (and made a note to document this).
2192
2193 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2194 when Exim is waiting for an SMTP response from a remote server, Exim
2195 restarts its select() call on the socket, thereby resetting its timeout.
2196 This is not a problem when such interrupts are rare. Somebody set up a cron
2197 job to run exiwhat every 2 minutes, which is less than the normal select()
2198 timeout (5 or 10 minutes). This meant that the select() timeout never
2199 kicked in because it was always reset. I have fixed this by comparing the
2200 time when an interrupt arrives with the time at the start of the first call
2201 to select(). If more time than the timeout has elapsed, the interrupt is
2202 treated as a timeout.
2203
2204 5. Some internal re-factoring in preparation for the addition of Sieve
2205 extensions (by MH). In particular, the "personal" test is moved to a
2206 separate function, and given an option for scanning Cc: and Bcc: (which is
2207 not set for Exim filters).
2208
2209 6. When Exim created an email address using the login of the caller as the
2210 local part (e.g. when creating a From: or Sender: header line), it was not
2211 quoting the local part when it contained special characters such as @.
2212
2213 7. Installed new OpenBSD configuration files.
2214
2215 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2216 try to make them clearer.
2217
2218 9. Callout options, other than the timeout value, were being ignored when
2219 verifying sender addresses in header lines. For example, when using
2220
2221 verify = header_sender/callout=no_cache
2222
2223 the cache was (incorrectly) being used.
2224
222510. Added a missing instance of ${EXE} to the exim_install script; this affects
2226 only the Cygwin environment.
2227
222811. When return_path_on_delivery was set as a log selector, if different remote
2229 addresses in the same message used different return paths and parallel
2230 remote delivery occurred, the wrong values would sometimes be logged.
2231 (Whenever a remote delivery process finished, the return path value from
2232 the most recently started remote delivery process was logged.)
2233
223412. RFC 3848 specifies standard names for the "with" phrase in Received: header
2235 lines when AUTH and/or TLS are in use. This is the "received protocol"
2236 field. Exim used to use "asmtp" for authenticated SMTP, without any
2237 indication (in the protocol name) for TLS use. Now it follows the RFC and
2238 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2239 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2240 names appear in log lines as well as in Received: header lines.
2241
224213. Installed MH's patches for Sieve to add the "copy" and "vacation"
2243 extensions, and comparison tests, and to fix some bugs.
2244
224514. Changes to the "personal" filter test:
2246
2247 (1) The test was buggy in that it was just doing the equivalent of
2248 "contains" tests on header lines. For example, if a user's address was
2249 anne@some.where, the "personal" test would incorrectly be true for
2250
2251 To: susanne@some.where
2252
2253 This test is now done by extracting each address from the header in turn,
2254 and checking the entire address. Other tests that are part of "personal"
2255 are now done using regular expressions (for example, to check local parts
2256 of addresses in From: header lines).
2257
2258 (2) The list of non-personal local parts in From: addresses has been
2259 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2260 taken from the Sieve specification recommendations.
2261
2262 (3) If the message contains any header line starting with "List-" it is
2263 treated as non-personal.
2264
2265 (4) The test for "circular" in the Subject: header line has been removed
2266 because it now seems ill-conceived.
2267
226815. Minor typos in src/EDITME comments corrected.
2269
227016. Installed latest exipick from John Jetmore.
2271
227217. If headers_add on a router specified a text string that was too long for
2273 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2274 of string_sprintf() is now avoided.
2275
227618. $message_body_size was not set (it was always zero) when running the DATA
2277 ACL and the local_scan() function.
2278
227919. For the "mail" command in an Exim filter, no default was being set for
2280 the once_repeat time, causing a random time value to be used if "once" was
2281 specified. (If the value happened to be <= 0, no repeat happened.) The
2282 default is now 0s, meaning "never repeat". The "vacation" command was OK
2283 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2284 (I found it when inspecting the code).
2285
228620. There is now an overall timeout for performing a callout verification. It
2287 defaults to 4 times the callout timeout, which applies to individual SMTP
2288 commands during the callout. The overall timeout applies when there is more
2289 than one host that can be tried. The timeout is checked before trying the
2290 next host. This prevents very long delays if there are a large number of
2291 hosts and all are timing out (e.g. when the network connections are timing
2292 out). The value of the overall timeout can be changed by specifying an
2293 additional sub-option for "callout", called "maxwait". For example:
2294
2295 verify = sender/callout=5s,maxwait=20s
2296
229721. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2298 to the end before writing, but this should make it even safer).
2299
230022. Exim was forgetting that it had advertised PIPELINING for the second and
2301 subsequent messages on an SMTP connection. It was also not resetting its
2302 memory on STARTTLS and an internal HELO.
2303
230423. When Exim logs an SMTP synchronization error within a session, it now
2305 records whether PIPELINING has been advertised or not.
2306
230724. Added 3 instances of "(long int)" casts to time_t variables that were being
2308 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2309 rather than long int.
2310
231125. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2312
231326. Added the never_mail option to autoreply.
2314
2315
2316Exim version 4.41
2317-----------------
2318
2319 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2320 crash if the getsockname() call failed; this can happen if a connection is
2321 closed very soon after it is established. The problem was simply in the
2322 order in which certain operations were done, causing Exim to try to write
2323 to the SMTP stream before it had set up the file descriptor. The bug has
2324 been fixed by making things happen in the correct order.
2325
2326
2327Exim version 4.40
2328-----------------
2329
2330 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2331 before the connection was closed, thus losing the rejection response.
2332
2333 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2334 some early Solaris releases, but causes trouble in current releases where
2335 socklen_t is defined.
2336
2337 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2338 always exist.
2339
2340 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2341 configured.
2342
2343 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2344 that releasing the top of it at the end releases what was used for sub-
2345 expansions (unless the block got too big). However, discard this block if
2346 the first thing is a variable or header, so that we can use its block when
2347 it is dynamic (useful for very large $message_headers, for example).
2348
2349 6. Lookups now cache *every* query, not just the most recent. A new, separate
2350 store pool is used for this. It can be recovered when all lookup caches are
2351 flushed. Lookups now release memory at the end of their result strings.
2352 This has involved some general refactoring of the lookup sources.
2353
2354 7. Some code has been added to the store_xxx() functions to reduce the amount
2355 of flapping under certain conditions.
2356
2357 8. log_incoming_interface used to affect only the <= reception log lines. Now
2358 it causes the local interface and port to be added to several more SMTP log
2359 lines, for example "SMTP connection from", and rejection lines.
2360
2361 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2362
236310. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2364
236511. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2366 could be overwritten at the end of the current message (or the start of a
2367 new message if it was set in a HELO ACL). The value is now preserved for
2368 the duration of the SMTP connection.
2369
237012. If a transport had a headers_rewrite setting, and a matching header line
2371 contained an unqualified address, that address was qualified, even if it
2372 did not match any rewriting rules. The underlying bug was that the values
2373 of the flags that permit the existence of unqualified sender and recipient
2374 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2375 non-local messages, and by -bnq for local messages) were not being
2376 preserved with the message after it was received.
2377
237813. When Exim was logging an SMTP synchronization error, it could sometimes log
2379 "next input=" as part of the text comprising the host identity instead of
2380 the correct text. The code was using the same buffer for two different
2381 strings. However, depending on which order the printing function evaluated
2382 its arguments, the bug did not always show up. Under Linux, for example, my
2383 test suite worked just fine.
2384
238514. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2386 doesn't work with some older versions of Perl. It has been changed to "my",
2387 which in any case is probably the better facility to use.
2388
238915. A really picky compiler found some instances of statements for creating
2390 error messages that either had too many or two few arguments for the format
2391 string.
2392
239316. The size of the buffer for calls to the DNS resolver has been increased
2394 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2395 for addresses that have a lot of PTR records. This alleviates a problem; it
2396 does not fully solve it.
2397
239817. A dnsdb lookup for PTR records that receives more data than will fit in the
2399 buffer now truncates the list and logs the incident, which is the same
2400 action as happens when Exim is looking up a host name and its aliases.
2401 Previously in this situation something unpredictable would happen;
2402 sometimes it was "internal error: store_reset failed".
2403
240418. If a server dropped the connection unexpectedly when an Exim client was
2405 using GnuTLS and trying to read a response, the client delivery process
2406 crashed while trying to generate an error log message.
2407
240819. If a "warn" verb in an ACL added multiple headers to a message in a single
2409 string, for example:
2410
2411 warn message = H1: something\nH2: something
2412
2413 the text was added as a single header line from Exim's point of view
2414 though it ended up OK in the delivered message. However, searching for the
2415 second and subsequent header lines using $h_h2: did not work. This has been
2416 fixed. Similarly, if a system filter added multiple headers in this way,
2417 the routers could not see them.
2418
241920. Expanded the error message when iplsearch is called with an invalid key to
2420 suggest using net-iplsearch in a host list.
2421
242221. When running tests using -bh, any delays imposed by "delay" modifiers in
2423 ACLs are no longer actually imposed (and a message to that effect is
2424 output).
2425
242622. If a "gecos" field in a passwd entry contained escaped characters, in
2427 particular, if it contained a \" sequence, Exim got it wrong when building
2428 a From: or a Sender: header from that name. A second bug also caused
2429 incorrect handling when an unquoted " was present following a character
2430 that needed quoting.
2431
243223. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2433 was not being matched caselessly.
2434
243524. Arranged for all hyphens in the exim.8 source to be escaped with
2436 backslashes.
2437
243825. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2439 properly. Recipient callout cache records were still being keyed to include
2440 the sender, even when use_sender was set false. This led to far more
2441 callouts that were necessary. The sender is no longer included in the key
2442 when use_sender is false.
2443
244426. Added "control = submission" modifier to ACLs.
2445
244627. Added the ${base62d: operator to decode base 62 numbers.
2447
244828. dnsdb lookups can now access SRV records.
2449
245029. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2451 the configuration file.
2452
245330. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2454 (-v) mode. This makes the output for a verbose queue run more intelligible.
2455
245631. Added a use_postmaster feature to recipient callouts.
2457
245832. Added the $body_zerocount variable, containing the number of binary zero
2459 bytes in the message body.
2460
246133. The time of last modification of the "new" subdirectory is now used as the
2462 "mailbox time last read" when there is a quota error for a maildir
2463 delivery.
2464
246534. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2466
246735. Added +ignore_unknown as a special item in host lists.
2468
246936. Code for decoding IPv6 addresses in host lists is now included, even if
2470 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2471 address was recognized as an IP address, but was then not correctly decoded
2472 into binary, causing unexpected and incorrect effects when compared with
2473 another IP address.
2474
2475
2476Exim version 4.34
2477-----------------
2478
2479 1. Very minor rewording of debugging text in manualroute to say "list of
2480 hosts" instead of "hostlist".
2481
2482 2. If verify=header_syntax was set, and a header line with an unqualified
2483 address (no domain) and a large number of spaces between the end of the
2484 name and the colon was received, the reception process suffered a buffer
2485 overflow, and (when I tested it) crashed. This was caused by some obsolete
2486 code that should have been removed. The fix is to remove it!
2487
2488 3. When running in the test harness, delay a bit after writing a bounce
2489 message to get a bit more predictability in the log output.
2490
2491 4. Added a call to search_tidyup() just before forking a reception process. In
2492 theory, someone could use a lookup in the expansion of smtp_accept_max_
2493 per_host which, without the tidyup, could leave open a database connection.
2494
2495 5. Added the variables $recipient_data and $sender_data which get set from a
2496 lookup success in an ACL "recipients" or "senders" condition, or a router
2497 "senders" option, similar to $domain_data and $local_part_data.
2498
2499 6. Moved the writing of debug_print from before to after the "senders" test
2500 for routers.
2501
2502 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2503 problems for message scanning, either using a data ACL, or using
2504 local_scan() because the Received: header was not generated till after they
2505 were called (in order to set the time as the time of reception completion).
2506 I have revised the way this works. The header is now generated after the
2507 body is received, but before the ACL or local_scan() are called. After they
2508 are run, the timestamp in the header is updated.
2509
2510
2511Exim version 4.33
2512-----------------
2513
2514 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2515 before starting a queue runner without re-exec. This happened only when
2516 deliver_drop_privilege was set or when the Exim user was set to root. The
2517 effect of the bug was that timeouts during subsequent deliveries caused
2518 crashes instead of being properly handled. The handler is now left at its
2519 default (and expected) setting.
2520
2521 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2522 message, again when deliver_drop_privilege is set or Exim is run as root.
2523 The bug described in (1) was not present in this case, but the tidying up
2524 of the other signals was missing. I have made the two cases consistent.
2525
2526 3. The ignore_target_hosts setting on a manualroute router was being ignored
2527 for hosts that were looked up using the /MX notation.
2528
2529 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2530 in domain lists.
2531
2532 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2533 operated on the sender address. After changing the $sender_address to <>
2534 for the sender address verify, Exim was re-instated it as the original
2535 (before rewriting) address, but remembering that it had rewritten it, so it
2536 wasn't rewriting it again. This bug also had the effect of breaking the
2537 sender address verification caching when the sender address was rewritten.
2538
2539 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2540 This has been changed so that if the ip literal address matches
2541 ignore_target_hosts, the router declines.
2542
2543 7. Added expansion conditions match_domain, match_address, and match_local_
2544 part (NOT match_host).
2545
2546 8. The placeholder for the Received: header didn't have a length field set.
2547
2548 9. Added code to Exim itself and to exim_lock to test for a specific race
2549 condition that could lead to file corruption when using MBX delivery. The
2550 issue is with the lockfile that is created in /tmp. If this file is removed
2551 after a process has opened it but before that process has acquired a lock,
2552 there is the potential for a second process to recreate the file and also
2553 acquire a lock. This could lead to two Exim processes writing to the file
2554 at the same time. The added code performs the same test as UW imapd; it
2555 checks after acquiring the lock that its file descriptor still refers to
2556 the same named file.
2557
255810. The buffer for building added header lines was of fixed size, 8192 bytes.
2559 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2560 when Exim is built.
2561
256211. Added the smtp_active_hostname option. If used, this will typically be made
2563 to depend on the incoming interface address. Because $interface_address is
2564 not set up until the daemon has forked a reception process, error responses
2565 that can happen earlier (such as "too many connections") no longer contain
2566 a host name.
2567
256812. If an expansion in a condition on a "warn" statement fails because a lookup
2569 defers, the "warn" statement is abandoned, and the next ACL statement is
2570 processed. Previously this caused the whole ACL to be aborted.
2571
257213. Added the iplsearch lookup type.
2573
257414. Added ident_timeout as a log selector.
2575
257615. Added tls_certificate_verified as a log selector.
2577
257816. Added a global option tls_require_ciphers (compare the smtp transport
2579 option of the same name). This controls incoming TLS connections.
2580
258117. I finally figured out how to make tls_require_ciphers do a similar thing
2582 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2583 before starting the TLS session.
2584
258518. Tabs are now shown as \t in -bP output.
2586
258719. If the log selector return_path_on_delivery was set, Exim crashed when
2588 bouncing a message because it had too many Received: header lines.
2589
259020. If two routers both had headers_remove settings, and the first one included
2591 a superfluous trailing colon, the final name in the first list and the
2592 first name in the second list were incorrectly joined into one item (with a
2593 colon in the middle).
2594
2595
2596Exim version 4.32
2597-----------------
2598
2599 1. Added -C and -D options to the exinext utility, mainly to make it easier
2600 to include in the automated testing, but these could be helpful when
2601 multiple configurations are in use.
2602
2603 2. The exinext utility was not formatting the output nicely when there was
2604 an alternate port involved in the retry record key, nor when there was a
2605 message id as well (for retries that were specific to a specific message
2606 and a specific host). It was also confused by IPv6 addresses, because of
2607 the additional colons they contain. I have fixed the IPv4 problem, and
2608 patched it up to do a reasonable job for IPv6.
2609
2610 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2611 delivery, the log line now contains "pipelined" if PIPELINING was used.
2612
2613 4. An SMTP transport process used to panic and die if the bind() call to set
2614 an explicit outgoing interface failed. This has been changed; it is now
2615 treated in the same way as a connect() failure.
2616
2617 5. A reference to $sender_host_name in the part of a conditional expansion
2618 that was being skipped was still causing a DNS lookup. This no longer
2619 occurs.
2620
2621 6. The def: expansion condition was not recognizing references to header lines
2622 that used bh_ and bheader_.
2623
2624 7. Added the _cache feature to named lists.
2625
2626 8. The code for checking quota_filecount in the appendfile transport was
2627 allowing one more file than it should have been.
2628
2629 9. For compatibility with Sendmail, the command line option
2630
2631 -prval:sval
2632
2633 is equivalent to
2634
2635 -oMr rval -oMs sval
2636
2637 and sets the incoming protocol and host name (for trusted callers). The
2638 host name and its colon can be omitted when only the protocol is to be set.
2639 Note the Exim already has two private options, -pd and -ps, that refer to
2640 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2641 "s", but I don't think that's a major issue.
2642
264310. A number of refactoring changes to the code, none of which should affect
2644 Exim's behaviour:
2645
2646 (a) The number of logging options was getting close to filling up the
2647 32-bit word that was used as a bit map. I have split them into two classes:
2648 those that are passed in the argument to log_write(), and those that are
2649 only ever tested independently outside of that function. These are now in
2650 separate 32-bit words, so there is plenty of room for expansion again.
2651 There is no change in the user interface or the logging behaviour.
2652
2653 (b) When building, for example, log lines, the code previously used a
2654 macro that called string_cat() twice, in order to add two strings. This is
2655 not really sufficiently general. Furthermore, there was one instance where
2656 it was actually wrong because one of the argument was used twice, and in
2657 one call a function was used. (As it happened, calling the function twice
2658 did not affect the overall behaviour.) The macro has been replaced by a
2659 function that can join an arbitrary number of extra strings onto a growing
2660 string.
2661
2662 (c) The code for expansion conditions now uses a table and a binary chop
2663 instead of a serial search (which was left over from when there were very
2664 few conditions). Also, it now recognizes conditions like "pam" even when
2665 the relevant support is not compiled in: a suitably worded error message is
2666 given if an attempt is made to use such a condition.
2667
266811. Added ${time_interval:xxxxx}.
2669
267012. A bug was causing one of the ddress fields not to be passed back correctly
2671 from remote delivery subprocesses. The field in question was not being
2672 subsequently used, so this caused to problems in practice.
2673
267413. Added new log selectors queue_time and deliver_time.
2675
267614. Might have fixed a bug in maildirsizefile handling that threw up
2677 "unexpected character" debug warnings, and recalculated the data
2678 unnecessarily. In any case, I expanded the warning message to give more
2679 information.
2680
268115. Added the message "Restricted characters in address" to the statements in
2682 the default ACL that block characters like @ and % in local parts.
2683
268416. Change 71 for release 4.31 proved to be much less benign that I imagined.
2685 Three changes have been made:
2686
2687 (a) There was a serious bug; a negative response to MAIL caused the whole
2688 recipient domain to be cached as invalid, thereby blocking all messages
2689 to all local parts at the same domain, from all senders. This bug has
2690 been fixed. The domain is no longer cached after a negative response to
2691 MAIL if the sender used is not empty.
2692
2693 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2694 been restored.
2695
2696 (c) A new callout option, "use_sender" has been added for people who want
2697 the modified behaviour.
2698
2699
2700Exim version 4.31
2701-----------------
2702
2703 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
2704 Larry Rosenman.
2705
2706 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
2707 indeed breaks things for older releases.
2708
2709 3. Added additional logging to the case where there is a problem reading data
2710 from a filter that is running in a subprocess using a pipe, in order to
2711 try to track down a specific problem.
2712
2713 4. Testing facility fudge: when running in the test harness and attempting
2714 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
2715 getting "No route to host". Convert this to a timeout.
2716
2717 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
2718 warning.
2719
2720 6. Some OS don't have socklen_t but use size_t instead. This affects the
2721 fifth argument of getsockopt() amongst other things. This is now
2722 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
2723 can be set for individual OS. I have set it for SunOS5, OSF1, and
2724 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
2725 some earlier ones do not.
2726
2727 7. Change 4.30/15 was not doing the test caselessly.
2728
2729 8. The standard form for an IPv6 address literal was being rejected by address
2730 parsing in, for example, MAIL and RCPT commands. An example of this kind of
2731 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
2732 this, as well as the form without the "IPv6" on the front (but only when
2733 address literals are enabled, of course).
2734
2735 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
2736
273710. Exim crashed if a message with an empty sender address specified by -f
2738 encountered a router with an errors_to setting. This could be provoked only
2739 by a command such as
2740
2741 exim -f "" ...
2742
2743 where an empty string was supplied; "<>" did not hit this bug.
2744
274511. Installed PCRE release 4.5.
2746
274712. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
2748 remained set. It is now erased.
2749
275013. exiqgrep wasn't working on MacOS X because it didn't correctly compute
2751 times from message ids (which are base 36 rather than the normal 62).
2752
275314. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
2754 were being counted as actual protocol errors, and logged if the log
2755 selector +smtp_protocol_error was set. One cannot be perfect in this test,
2756 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
2757 and DATA following a set of rejected RCPTs do not count as protocol errors.
2758 In other words, Exim assumes they were pipelined, though this may not
2759 actually be the case. Of course, in all cases the client gets an
2760 appropriate error code.
2761
276215. If a lookup fails in an ACL condition, a message about the failure may
2763 be available; it is used if testing the ACL cannot continue, because most
2764 such messages specify what the cause of the deferral is. However, some
2765 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
2766 that caused an old message to be retained and used if a later statement
2767 caused a defer, replacing the real cause of the deferral.
2768
276916. If an IP address had so many PTR records that the DNS lookup buffer
2770 was not large enough to hold them, Exim could crash while trying to process
2771 the truncated data. It now detects and logs this case.
2772
277317. Further to 4.21/58, another change has been made: if (and only if) the
2774 first line of a message (the first header line) ends with CRLF, a bare LF
2775 in a subsequent header line has a space inserted after it, so as not to
2776 terminate the header.
2777
277818. Refactoring: tidied an ugly bit of code in appendfile that copied data
2779 unnecessarily, used atoi() instead of strtol(), and didn't check the
2780 termination when getting file sizes from file names by regex.
2781
278219. Completely re-implemented the support for maildirsize files, in the light
2783 of a number of problems with the previous contributed implementation
2784 (4.30/29). In particular:
2785
2786 . If the quota is zero, the maildirsize file is maintained, but no quota is
2787 imposed.
2788
2789 . If the maildir directory does not exist, it is created before any attempt
2790 to write a maildirsize file.
2791
2792 . The quota value in the file is just a cache; if the quota is changed in
2793 the transport, the new value overrides.
2794
2795 . A regular expression is available for excluding directories from the
2796 count.
2797
279820. The autoreply transport checks the characters in options that define the
2799 message's headers; it allows continued headers, but it was checking with
2800 isspace() after an embedded newline instead of explicitly looking for a
2801 space or a tab.
2802
280321. If all the "regular" hosts to which an address was routed had passed their
2804 expiry times, and had not reached their retry times, the address was
2805 bounced, even if fallback hosts were defined. Now Exim should go on to try
2806 the fallback hosts.
2807
280822. Increased buffer sizes in the callout code from 1024 to 4096 to match the
2809 equivalent code in the SMTP transport. Some hosts send humungous responses
2810 to HELO/EHLO, more than 1024 it seems.
2811
281223. Refactoring: code in filter.c used (void *) for "any old type" but this
2813 gives compiler warnings in some environments. I've now done it "properly",
2814 using a union.
2815
281624. The replacement for inet_ntoa() that is used with gcc on IRIX systems
2817 (because of problems with the built-in one) was declared to return uschar *
2818 instead of char *, causing compiler failure.
2819
282025. Fixed a file descriptor leak when processing alias/forward files.
2821
282226. Fixed a minor format string issue in dbfn.c.
2823
282427. Typo in exim.c: ("dmbnz" for "dbmnz").
2825
282628. If a filter file refered to $h_xxx or $message_headers, and the headers
2827 contained RFC 2047 "words", Exim's memory could, under certain conditions,
2828 become corrupted.
2829
283029. When a sender address is verified, it is cached, to save repeating the test
2831 when there is more than one recipient in a message. However, when the
2832 verification involves a callout, it is possible for different callout
2833 options to be set for different recipients. It is too complicated to keep
2834 track of this in the cache, so now Exim always runs a verification when a
2835 callout is required, relying on the callout cache for the optimization.
2836 The overhead is duplication of the address routing, but this should not be
2837 too great.
2838
283930. Fixed a bug in callout caching. If a RCPT command caused the sender address
2840 to be verified with callout=postmaster, and the main callout worked but the
2841 postmaster check failed, the verification correctly failed. However, if a
2842 subsequent RCPT command asked for sender verification *without* the
2843 postmaster check, incorrect caching caused this verification also to fail,
2844 incorrectly.
2845
284631. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
2847 it was not caching the DNS options (qualify_single, search_parents) that
2848 were used when the lookup failed. A subsequent lookup with different
2849 options therefore always gave the same answer, though there were cases
2850 where it should not have. (Example: a "domains = !$mx_any" option on a
2851 dnslookup router: the "domains" option is always processed without any
2852 widening, but the router might have qualify_single set.) Now Exim uses the
2853 cached value only when the same options are set.
2854
285532. Added John Jetmore's "exipick" utility to the distribution.
2856
285733. GnuTLS: When an attempt to start a TLS session fails for any reason other
2858 than a timeout (e.g. a certificate is required, and is not provided), an
2859 Exim server now closes the connection immediately. Previously it waited for
2860 the client to close - but if the client is SSL, it seems that they each
2861 wait for each other, leading to a delay before one of them times out.
2862
286334: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
2864 maintained 0.8.x compatibility because I don't think many are using it, and
2865 it is clearly obsolete.
2866
286735. Added TLS support for CRLs: a tls_crl global option and one for the smtp
2868 transport.
2869
287036. OpenSSL: $tls_certificate_verified was being set to 1 even if the
2871 client certificate was expired. A simple patch fixes this, though I don't
2872 understand the full logic of why the verify callback is called multiple
2873 times.
2874
287537. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
2876 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
2877 which causes problems with some clients (such as the Certicom SSL Plus
2878 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
2879 disables the coutermeasure allowing Eudora to connect."
2880
288138. Exim was not checking that a write() to a log file succeeded. This could
2882 lead to Bad Things if a log got too big, in particular if it hit a file
2883 size limit. Exim now panics and dies if it cannot write to a log file, just
2884 as it does if it cannot open a log file.
2885
288639. Modified OS/Makefile-Linux so that it now contains
2887
2888 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
2889
2890 The two -D definitions ensure that Exim is compiled with large file
2891 support, which makes it possible to handle log files that are bigger than
2892 2^31.
2893
289440. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
2895 instance) a domain was checked against a named list that involved a lookup,
2896 causing $domain_data to be set, then another domain was checked against the
2897 same list, then the first domain was re-checked, the value of $domain_data
2898 after the final check could be wrong. In particular, if the second check
2899 failed, it could be set empty. This bug probably also applied to
2900 $localpart_data.
2901
290241. The strip_trailing_dot option was not being applied to the address given
2903 with the -f command-line option.
2904
290542. The code for reading a message's header from the spool was incrementing
2906 $received_count, but never initializing it. This meant that the value was
2907 incorrect (doubled) while delivering a message in the same process in which
2908 it was received. In the most common configuration of Exim, this never
2909 happens - a fresh exec is done - but it can happen when
2910 deliver_drop_privilege is set.
2911
291243. When Exim logs an SMTP synchronization error - client data sent too soon -
2913 it now includes up to 150 characters of the unexpected data in the log
2914 line.
2915
291644. The exim_dbmbuild utility uses fixed size buffers for reading input lines
2917 and building data strings. The size of both of these buffers was 10 000
2918 bytes - far larger than anybody would *ever* want, thought I. Needless to
2919 say, somebody hit the limit. I have increased the maximum line length to
2920 20 000 and the maximum data length of concatenated lines to 100 000. I have
2921 also fixed two bugs, because there was no checking on these buffers. Tsk,
2922 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
2923 buffer is too small.
2924
292545. The exim_dbmbuild utility did not support quoted keys, as Exim does in
2926 lsearch lookups. Now it does.
2927
292846. When parsing a route_list item in a manualroute router, a fixed-length
2929 buffer was used for the list of hosts. I made this 1024 bytes long,
2930 thinking that nobody would ever have a list of hosts that long. Wrong.
2931 Somebody had a whole pile of complicated expansion conditions, and the
2932 string was silently truncated, leading to an expansion error. It turns out
2933 that it is easier to change to an unlimited length (owing to other changes
2934 that have happened since this code was originally written) than to build
2935 structure for giving a limitation error. The length of the item that
2936 expands into the list of hosts is now unlimited.
2937
293847. The lsearch lookup could not handle data where the length of text line was
2939 more than 4095 characters. Such lines were truncated, leading to shortened
2940 data being returned. It should now handle lines of any length.
2941
294248. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
2943 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
2944 ACL").
2945
294649. Cosmetic tidy to scripts like exicyclog that are generated by globally
2947 replacing strings such as BIN_DIRECTORY in a source file: the replacement
2948 no longer happens in comment lines. A list of replacements is now placed
2949 at the head of all of the source files, except those whose only change is
2950 to replace PERL_COMMAND in the very first #! line.
2951
295250. Replaced the slow insertion sort in queue.c, for sorting the list of
2953 messages on the queue, with a bottom-up merge sort, using code contributed
2954 by Michael Haardt. This should make operations like -bp somewhat faster on
2955 large queues. It won't affect queue runners, except when queue_run_in_order
2956 is set.
2957
295851. Installed eximstats 1.31 in the distribution.
2959
296052. Added support for SRV lookups to the dnslookup router.
2961
296253. If an ACL referred to $message_body or $message_body_end, the value was not
2963 reset for any messages that followed in the same SMTP session.
2964
296554. The store-handling optimization for building very long strings was not
2966 differentiating between the different store pools. I don't think this
2967 actually made any difference in practice, but I've tidied it.
2968
296955. While running the routers to verify a sender address, $sender_address
2970 was still set to the sender address. This is wrong, because when routing to
2971 send a bounce to the sender, it would be empty. Therefore, I have changed
2972 it so that, while verifying a sender address, $sender_address is set to <>.
2973 (There is no change to what happens when verifying a recipient address.)
2974
297556. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
2976 target A or AAAA records (if not already returned) without resetting the
2977 qualify_single or search_parents options of the DNS resolver. These are
2978 inappropriate in this case because the targets of MX and SRV records must
2979 be FQDNs. A broken DNS record could cause trouble if it happened to have a
2980 target that, when qualified, matched something in the local domain. These
2981 two options are now turned off when doing these lookups.
2982
298357. It seems that at least some releases of Reiserfs (which does not have the
2984 concept of a fixed number of inodes) returns zero and not -1 for the
2985 number of available inodes. This interacted badly with check_spool_inodes,
2986 which assumed that -1 was the "no such thing" setting. What I have done is
2987 to check that the total number of inodes is greater than zero before doing
2988 the test of how many are available.
2989
299058. When a "warn" ACL statement has a log_message modifier, the message is
2991 remembered, and not repeated. This is to avoid a lot of repetition when a
2992 message has many recipients that cause the same warning to be written.
2993 Howewer, Exim was preserving the list of already written lines for an
2994 entire SMTP session, which doesn't seem right. The memory is now reset if a
2995 new message is started.
2996
299759. The "rewrite" debugging flag was not showing the result of rewriting in the
2998 debugging output unless log_rewrite was also set.
2999
300060. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3001 of (int)(handle) when we know that handle contains (void *)(-1).
3002
300361. The Exim daemon panic-logs an error return when it closes the incoming
3004 connection. However "connection reset by peer" seems to be common, and
3005 isn't really an error worthy of noting specially, so that particular error
3006 is no long logged.
3007
300862. When Exim is trying to find all the local interfaces, it used to panic and
3009 die if the ioctl to get the interface flags failed. However, it seems that
3010 on at least one OS (Solaris 9) it is possible to have an interface that is
3011 included in the list of interfaces, but for which you get a failure error
3012 for this call. This happens when the interface is not "plumbed" into a
3013 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3014 failure of the "get flags" call assumes that the interface is down.
3015
301663. Added a ${eval10: operator, which assumes all numbers are decimal. This
3017 makes life easier for people who are doing arithmetic on fields extracted
3018 from dates, where you often get leading zeros that should not be
3019 interpreted as octal.
3020
302164. Added qualify_domain to the redirect router, to override the global
3022 setting.
3023
302465. If a pathologically long header line contained very many addresses (the
3025 report of this problem mentioned 10 000) and each of them was rewritten,
3026 Exim could use up a very large amount of memory. (It kept on making new
3027 copies of the header line as it rewrote, and never released the old ones.)
3028 At the expense of a bit more processing, the header rewriting function has
3029 been changed so that it no longer eats memory in this way.
3030
303166. The generation of the Received: header has been moved from the time that a
3032 message starts to be received, to the time that it finishes. The timestamp
3033 in the Received: header should now be very close to that of the <= log
3034 line. There are two side-effects of this change:
3035
3036 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3037 logged header lines no longer include the local Received: line, because
3038 it has not yet been created. The same applies to a copy of the message
3039 that is returned to a non-SMTP sender when a message is rejected.
3040
3041 (b) When a filter file is tested using -bf, no additional Received: header
3042 is added to the test message. After some thought, I decided that this
3043 is a bug fix.
3044
3045 This change does not affect the value of $received_for. It is still set
3046 after address rewriting, but before local_scan() is called.
3047
304867. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3049
305068. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3051 gave an unhelpful panic error message, and a defer error. I have managed to
3052 change this behaviour so that it now rejects any supplied certificate,
3053 which seems right, as the list of acceptable certificates is empty.
3054
305569. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3056 gave an unhelpful defer error. I have not managed to make this reject any
3057 supplied certificates, but the error message it gives is "no certificate
3058 supplied", which is not helpful.
3059
306070. exigrep's output now also includes lines that are not associated with any
3061 message, but which match the given pattern. Implemented by a patch from
3062 Martin Sluka, which also tidied up the Perl a bit.
3063
306471. Recipient callout verification, like sender verification, was using <> in
3065 the MAIL FROM command. This isn't really the right thing, since the actual
3066 sender may affect whether the remote host accepts the recipient or not. I
3067 have changed it to use the actual sender in the callout; this means that
3068 the cache record is now keyed on a recipient/sender pair, not just the
3069 recipient address. There doesn't seem to be a real danger of callout loops,
3070 since a callout by the remote host to check the sender would use <>.
3071 [SEE ABOVE: changed after hitting problems.]
3072
307372. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3074 temporary errors. However, in the case of such a code being given after
3075 the end of a data transmission (i.e. after ".") Exim was failing to write
3076 a retry record for the message. (Yes, there was some broken host that was
3077 actually sending 8xx at this point.)
3078
307973. An unknown lookup type in a host list could cause Exim to panic-die when
3080 the list was checked. (An example that provoked this was putting <; in the
3081 middle of a list instead of at the start.) If this happened during a DATA
3082 ACL check, a -D file could be left lying around. This kind of configuration
3083 error no longer causes Exim to die; instead it causes a defer errror. The
3084 incident is still logged to the main and panic logs.
3085
308674. Buglet left over from Exim 3 conversion. The message "too many messages
3087 in one connection" was written to the rejectlog but not the mainlog, except
3088 when address rewriting (yes!) was being logged.
3089
309075. Added write_rejectlog option.
3091
309276. When a system filter was run not as root (that is, when system_filter_user
3093 was set), the values of the $n variables were not being returned to the
3094 main process; thus, they were not subsequently available in the $sn
3095 variables.
3096
309777. Added +return_path_on_delivery log selector.
3098
309978. A connection timeout was being treated differently from recipients deferred
3100 when testing hosts_max_try with a message that was older than the host's
3101 retry timeout. (The host should not be counted, thus allowing all hosts to
3102 be tried at least once before bouncing.) This may have been the cause of an
3103 occasionally reported bug whereby a message would remain on the queue
3104 longer than the retry timeout, but would be bounced if a delivery was
3105 forced. I say "may" because I never totally pinned down the problem;
3106 setting up timeout/retry tests is difficult. See also the next item.
3107
310879. The ultimate address timeout was not being applied to errors that involved
3109 a combination of host plus message (for example, a timeout on a MAIL
3110 command). When an address resolved to a number of possible hosts, and they
3111 were not all tried for each delivery (e.g. because of hosts_max_try), a
3112 message could remain on the queue longer than the retry timeout.
3113
311480. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3115 Haardt.
3116
311781. Fixed an obscure SMTP outgoing bug which required at least the following
3118 conditions: (a) there was another message waiting for the same server;
3119 (b) the server returned 5xx to all RCPT commands in the first message so
3120 that the message was not completed; (c) the server dropped the connection
3121 or gave a negative response to the RSET that Exim sends to abort the
3122 transaction. The observed case was a dropped connection after DATA that had
3123 been sent in pipelining mode. That is, the server had advertised PIPELINING
3124 but was not implementing it correctly. The effect of the bug was incorrect
3125 behaviour, such as trying another host, and this could lead to a crash.
3126
3127
3128Exim version 4.30
3129-----------------
3130
3131 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3132 and daemon.c were passed as pointers to ints; they should have been
3133 pointers to socklen_t variables (which are typically unsigned ints).
3134
3135 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3136 fixed.
3137
3138 3. Fixed a really odd bug that affected only the testing scheme; patching a
3139 certain fixed string in the binary changed the value of another string that
3140 happened to be identical to the end of the original first string.
3141
3142 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3143 name", it returns that address as the IP address. On some operating
3144 systems (e.g. Solaris), it also passes back the IP address string as the
3145 "host name". However, on others (e.g. Linux), it passes back an empty
3146 string. Exim wasn't checking for this, and was changing the host name to an
3147 empty string, assuming it had been canonicized.
3148
3149 5. Although rare, it is permitted to have more than one PTR record for a given
3150 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3151 all the names associated with an address, because they do in Solaris.
3152 However, it seems that they do not in Linux for data that comes from the
3153 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3154 I found this out when I moved to a new Linux workstation and tried to run
3155 the Exim test suite.
3156
3157 To get round this problem I have changed the code so that it now does its
3158 own call to the DNS to look up PTR records when searching for a host name.
3159 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3160 addresses that are only in /etc/hosts are still found.
3161
3162 This behaviour is, however, controlled by an option called host_lookup_
3163 order, which defaults to "bydns:byaddr". If people want to use the other
3164 order, or indeed, just use one or the other means of lookup, they can
3165 specify it in this variable.
3166
3167 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3168 some operating systems, this comes back from gethostbyaddr() as an empty
3169 string, and this is what Exim used to test for. However, it seems that in
3170 other systems, "." is yielded. Exim now tests for this case too.
3171
3172 7. The values of check_spool_space and check_log_space are now held internally
3173 as a number of kilobytes instead of an absolute number of bytes. If a
3174 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3175 kilobyte. This means that much larger values can be stored.
3176
3177 8. Exim monitor: an attempt to get the action menu when not actually pointing
3178 at a message produces an empty menu entitled "No message selected". This
3179 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3180 no entries in it ("Shell widget menu has zero width and/or height"). So I
3181 have added a single, blank menu entry in this case.
3182
3183 9. Added ${quote_local_part.
3184
318510. MIME decoding is now applied to the contents of Subject: header lines when
3186 they are logged.
3187
318811. Now that a reference to $sender_host_address automatically causes a reverse
3189 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3190 host lookup before query-style lookups in lists that might use this
3191 variable. This has therefore been abolished, and the "net-" prefix is no
3192 longer necessary for query-style lookups.
3193
319412. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3195 have been a typo for LFLAGS, so it has been changed.
3196
319713. The install script calls Exim with "-C /dev/null" in order to find the
3198 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3199 to be output. Howeve, since Exim outputs its version number before the
3200 error, it didn't break the script. It just looked ugly. I fixed this by
3201 always allowing "-C /dev/null" if the caller is root.
3202
320314. Ignore overlarge ACL variable number when reading spool file - insurance
3204 against a later release with more variables having written the file.
3205
320615. The standard form for an IPv6 address literal was being rejected by EHLO.
3207 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3208 this, as well as the form without the "IPv6" on the front.
3209
321016. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3211 OS/Makefile-Darwin file.
3212
321317. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3214 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3215
321618. After change 4.21/52, "%ld" was used to format the contents of the $inode
3217 variable. However, some OS use ints for inodes. I've added cast to long int
3218 to get rid of the compiler warning.
3219
322019. I had forgotten to lock out "/../" in configuration file names when
3221 ALT_CONFIG_PREFIX was set.
3222
322320. Routers used for verification do not need to specify transports. However,
3224 if such a router generated a host list, and callout was configured, Exim
3225 crashed, because it could not find a port number from the (non-existent)
3226 transport. It now assumes port 25 in this circumstance.
3227
322821. Added the -t option to exigrep.
3229
323022. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3231 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3232 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3233 them is set, LOOKUP_LSEARCH is forced.
3234
323523. "exim -bV" now outputs a list of lookups that are included in the binary.
3236
323724. Added sender and host information to the "rejected by local_scan()" log
3238 line; previously there was no indication of these.
3239
324025. Added .include_if_exists.
3241
324226. Change 3.952/11 added an explicit directory sync on top of a file sync for
3243 Linux. It turns out that not all file systems support this. Apparently some
3244 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3245 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3246 not supported on the file descriptor, is now ignored when Exim is trying to
3247 sync a directory. This applies only to Linux.
3248
324927. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3250
325128. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3252 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3253 this.
3254
325529. Added support for maildirsize files from supplied patch (modified a bit).
3256
325730. The use of :fail: followed by an empty string could lead Exim to respond to
3258 sender verification failures with (e.g.):
3259
3260 550 Verification failed for <xxx>
3261 550 Sender verify failed
3262
3263 where the first response line was missing the '-' that indicates it is not
3264 the final line of the response.
3265
326631. The loop for finding the name of the user that called Exim had a hardwired
3267 limit of 10; it now uses the value of finduser_retries, which is used for
3268 all other user lookups.
3269
327032. Added $received_count variable, available in data and not_smtp ACLs, and at
3271 delivery time.
3272
327333. Exim was neglecting to zero errno before one call of strtol() when
3274 expanding a string and expecting an integer value. On some systems this
3275 resulted in spurious "integer overflow" errors. Also, it was casting the
3276 result into an int without checking.
3277
327834. Testing for a connection timeout using "timeout_connect" in the retry rules
3279 did not work. The code looks as if it has *never* worked, though it appears
3280 to have been documented since at least releast 1.62. I have made it work.
3281
328235. The "timeout_DNS" error in retry rules, also documented since at least
3283 1.62, also never worked. As it isn't clear exactly what this means, and
3284 clearly it isn't a major issue, I have abolished the feature by treating it
3285 as "timeout", and writing a warning to the main and panic logs.
3286
328736. The display of retry rules for -brt wasn't always showing the error code
3288 correctly.
3289
329037. Added new error conditions to retry rules: timeout_A, timeout_MX,
3291 timeout_connect_A, timeout_connect_MX.
3292
329338. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3294 to the empty sender.
3295
329639. The daemon was not analysing the content of -oX till after it had closed
3297 stderr and disconnected from the controlling terminal. This meant that any
3298 syntax errors were only noted on the panic log, and the return code from
3299 the command was 0. By re-arranging the code a little, I've made the
3300 decoding happen first, so such errors now appear on stderr, and the return
3301 code is 1. However, the actual setting up of the sockets still happens in
3302 the disconnected process, so errors there are still only recorded on the
3303 panic log.
3304
330540. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3306 connections (as happens on some IP stacks) was logged at start up time as
3307 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3308 it from "IPv6 and IPv4", which means that two separate sockets are being
3309 used.
3310
331141. The debug output for gethostbyname2() or getipnodebyname() failures now
3312 says whether AF_INET or AF_INET6 was passed as an argument.
3313
331442. Exiwhat output was messed up when time zones were included in log
3315 timestamps.
3316
331743. Exiwhat now gives more information about the daemon's listening ports,
3318 and whether -tls-on-connect was used.
3319
332044. The "port" option of the smtp transport is now expanded.
3321
332245. A "message" modifier in a "warn" statement in a non-message ACL was being
3323 silently ignored. Now an error message is written to the main and panic
3324 logs.
3325
332646. There's a new ACL modifier called "logwrite" which writes to a log file
3327 as soon as it is encountered.
3328
332947. Added $local_user_uid and $local_user_gid at routing time.
3330
333148. Exim crashed when trying to verify a sender address that was being
3332 rewritten to "<>".
3333
333449. Exim was recognizing only a space character after ".include". It now also
3335 recognizes a tab character.
3336
333750. Fixed several bugs in the Perl script that creates the exim.8 man page by
3338 extracting the relevant information from the specification. The man page no
3339 longer contains scrambled data for the -d option, and I've added a section
3340 at the front about calling Exim under different names.
3341
334251. Added "extra_headers" argument to the "mail" command in filter files.
3343
334452. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
3345 crash.
3346
334753. Installed eximstats 1.29.
3348
334954. Added transport_filter_timeout as a generic transport option.
3350
335155. Exim no longer adds an empty Bcc: header to messages that have no To: or
3352 Cc: header lines. This was required by RFC 822, but it not required by RFC
3353 2822.
3354
335556. Exim used to add From:, Date:, and Message-Id: header lines to any
3356 incoming messages that did not have them. Now it does so only if the
3357 message originates locally, that is, if there is no associated remote host
3358 address. When Resent- header lines are present, this applies to the Resent-
3359 lines rather than the non-Resent- lines.
3360
336157. Drop incoming SMTP connection after too many syntax or protocol errors. The
3362 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
3363
336458. Messages for configuration errors now include the name of the main
3365 configuration file - useful now that there may be more than one file in a
3366 list (.included file names were always shown).
3367
336859. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
3369 for those rare installations that do not start the daemon as root or run it
3370 setuid root. I've cut out the call to initgroups() if the daemon is not
3371 root at that time.
3372
337360. The Exim user and group can now be bound into the binary as text strings
3374 that are looked up at the start of Exim's processing.
3375
337661. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
3377
337862. Added $mailstore_basename variable.
3379
338063. Installed patch to sieve.c from Michael Haardt.
3381
338264. When Exim failed to open the panic log after failing to open the main log,
3383 the original message it was trying to log was written to stderr and debug
3384 output, but if they were not available (the usual case in production), it
3385 was lost. Now it is written to syslog before the two lines that record the
3386 failures to open the logs.
3387
338865. Users' Exim filters run in subprocesses under the user's uid. It is
3389 possible for a "deliver" command or an alias in a "personal" command to
3390 provoke an address rewrite. If logging of address rewriting is configured,
3391 this fails because the process is not running as root or exim. There may be
3392 a better way of dealing with this, but for the moment (because 4.30 needs
3393 to be released), I have disabled address rewrite logging when running a
3394 filter in a non-root, non-exim process.
3395
3396
3397Exim version 4.24
3398-----------------
3399
3400 1. The buildconfig auxiliary program wasn't quoting the value set for
3401 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
3402 not defined. This bug was masked in 4.22 by the effect that was fixed in
3403 change 4.23/1.
3404
3405 2. Some messages that were rejected after a message id was allocated were
3406 shown as "incomplete" by exigrep. It no longer does this for messages that
3407 are rejected by local_scan() or the DATA or non-SMTP ACLs.
3408
3409 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
3410 have allow_domain_literals set, the ID did not get logged in the <= line.
3411 Domain literals are now always recognized in Message-ID: header lines.
3412
3413 4. The first argument for a ${extract expansion item is the key name or field
3414 number. Leading and trailing spaces in this item were not being ignored,
3415 causing some misleading effects.
3416
3417 5. When deliver_drop_privilege was set, single queue runner processes started
3418 manually (i.e. by the command "exim -q") or by the daemon (which uses the
3419 same command in the process it spins off) were not dropping privilege.
3420
3421 6. When the daemon running as "exim" started a queue runner, it always
3422 re-executed Exim in the spun-off process. This is a waste of effort when
3423 deliver_drop_privilege is set. The new process now just calls the
3424 queue-runner function directly.
3425
3426
3427Exim version 4.23
3428-----------------
3429
3430 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
3431 HEADERS_CHARSET.
3432
3433 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
3434 ignored. Though the use of -oP was forcing the writing of a pid file, it
3435 was always written to the default place.
3436
3437 3. If the message "no IP address found for host xxxx" is generated during
3438 incoming verification, it is now followed by identification of the incoming
3439 connection (so you can more easily find what provoked it).
3440
3441 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
3442
3443 5. Added some features to "harden" Exim a bit more against certain attacks:
3444
3445 (a) There is now a build-time option called FIXED_NEVER_USERS that can
3446 be put in Local/Makefile. This is like the never_users runtime option,
3447 but it cannot be overridden. The default setting is "root".
3448
3449 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
3450 prefix string with which any file named in a -C command line option
3451 must start.
3452
3453 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
3454 is retained for -C and -D only if the caller of Exim is root. Without
3455 it, the exim user may also use -C and -D and retain privilege.
3456
3457 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
3458 command line option is disabled.
3459
3460 6. Macro names set by the -D option must start with an upper case letter, just
3461 like macro names defined in the configuration file.
3462
3463 7. Added "dereference=" facility to LDAP.
3464
3465 8. Two instances of the typo "uknown" in the source files are fixed.
3466
3467 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
3468 the Configure-Makefile script screwed up while processing it.
3469
347010. Incorporated PCRE 4.4.
3471
347211. The SMTP synchronization check was not operating right at the start of an
3473 SMTP session. For example, it could not catch a HELO sent before the client
3474 waited for the greeting. There is now a check for outstanding input at the
3475 point when the greeting is written. Because of the duplex, asynchronous
3476 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
3477 way, but not yet received, when the check is performed.
3478
347912. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
3480 on TCP/IP sockets, because this apparently causes some broken clients to
3481 timeout.
3482
348313. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
3484 unchanged) from the Cygwin maintainer.
3485
348614. The code for -bV that shows what is in the binary showed "mbx" when maildir
3487 was supported instead of testing for mbx. Effectively a typo.
3488
348915. The spa authenticator server code was not checking that the input it
3490 received was valid base64.
3491
349216. The debug output line for the "set" modifier in ACLs was not showing the
3493 name of the variable that was being set.
3494
349517. Code tidy: the variable type "vtype_string" was never used. Removed it.
3496
349718. Previously, a reference to $sender_host_name did not cause a DNS reverse
3498 lookup on its own. Something else was needed to trigger the lookup. For
3499 example, a match in host_lookup or the need for a host name in a host list.
3500 Now, if $sender_host_name is referenced and the host name has not yet been
3501 looked up, a lookup is performed. If the lookup fails, the variable remains
3502 empty, and $host_lookup_failed is set to "1".
3503
350419. Added "eqi" as a case-independent comparison operator.
3505
350620. The saslauthd authentication condition could segfault if neither service
3507 nor realm was specified.
3508
350921. If an overflowing value such as "2048M" was set for message_size_limit, the
3510 error message that was logged was misleading, and incoming SMTP
3511 connections were dropped. The message is now more accurate, and temporary
3512 errors are given to SMTP connections.
3513
351422. In some error situations (such as 21 above) Exim rejects all SMTP commands
3515 (except RSET) with a 421 error, until QUIT is received. However, it was
3516 failing to send a response to QUIT.
3517
351823. The HELO ACL was being run before the code for helo_try_verify_hosts,
3519 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
3520 ACL is now run after the helo_try_verify_hosts code.
3521
352224. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
3523 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
3524 case-independent, so other case variants are also recognized). Apparently
3525 some systems use these upper case variants.
3526
352725. If more than two messages were waiting for the same host, and a transport
3528 filter was specified for the transport, Exim sent two messages over the
3529 same TCP/IP connection, and then failed with "socket operation on non-
3530 socket" when it tried to send the third.
3531
353226. Added Exim::debug_write and Exim::log_write for embedded Perl use.
3533
353427. The extern definition of crypt16() in expand.c was not being excluded when
3535 the OS had its own crypt16() function.
3536
353728. Added bounce_return_body as a new option, and bounce_return_size_limit
3538 as a preferred synonym for return_size_limit, both as an option and as an
3539 expansion variable.
3540
354129. Added LIBS=-liconv to OS/Makefile-OSF1.
3542
354330. Changed the default configuration ACL to relax the local part checking rule
3544 for addresses that are not in any local domains. For these addresses,
3545 slashes and pipe symbols are allowed within local parts, but the sequence
3546 /../ is explicitly forbidden.
3547
354831. SPA server authentication was not clearing the challenge buffer before
3549 using it.
3550
355132. log_message in a "warn" ACL statement was writing to the reject log as
3552 well as to the main log, which contradicts the documentation and doesn't
3553 seem right (because no rejection is happening). So I have stopped it.
3554
355533. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
3556 However, I am unable to do any testing of this.
3557
355834. Fixed an infelicity in the appendfile transport. When checking directories
3559 for a mailbox, to see if any needed to be created, it was accidentally
3560 using path names with one or more superfluous leading slashes; tracing
3561 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
3562
356335. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
3564 contents are added to the log line that is written for every discarded
3565 recipient. (Previously a log_message setting was ignored.)
3566
356736. The ${quote: operator now quotes the string if it is empty.
3568
356937. The install script runs exim in order to find its version number. If for
3570 some reason other than non-existence or emptiness, which it checks, it
3571 could not run './exim', it was installing it with an empty version number,
3572 i.e. as "exim-". This error state is now caught, and the installation is
3573 aborted.
3574
357538. An argument was missing from the function that creates an error message
3576 when Exim fails to connect to the socket for saslauthd authentication.
3577 This could cause Exim to crash, or give a corrupted message.
3578
357939. Added isip, isip4, and isip6 to ${if conditions.
3580
358140. The ACL variables $acl_xx are now saved with the message, and can be
3582 accessed later in routers, transports, and filters.
3583
358441. The new lookup type nwildlsearch is like wildlsearch, except that the key
3585 strings in the file are not string-expanded.
3586
358742. If a MAIL command specified a SIZE value that was too large to fit into an
3588 int variable, the check against message_size_limit failed. Such values are
3589 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
3590 day this will have to be increased, but I don't think I want to be around
3591 when emails are that large.
3592
3593
3594
3595Exim version 4.22
3596-----------------
3597
3598 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
3599 iconv() is not standard in FreeBSD.
3600
3601 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with
3602 IPv6 enabled. The observed symptom was a segmentation fault on return from
3603 the function os_common_find_running_interfaces() in src/os.c.
3604
3605 3. In the check_special_case() function in daemon.c I had used "errno" as an
3606 argument name, which causes warnings on some systems. This was basically a
3607 typo, since it was named "eno" in the comments!
3608
3609 4. The code that waits for the clock to tick (at a resolution of some fraction
3610 of a second) so as to ensure message-id uniqueness was always waiting for
3611 at least one whole tick, when it could have waited for less. [This is
3612 almost certainly not relevant at current processor speeds, where it is
3613 unlikely to ever wait at all. But we try to future-proof.]
3614
3615 5. The function that sleeps for a time interval that includes fractions of a
3616 second contained a race. It did not block SIGALRM between setting the
3617 timer, and suspending (a couple of lines later). If the interval was short
3618 and the sigsuspend() was delayed until after it had expired, the suspension
3619 never ended. On busy systems this could lead to processes getting stuck for
3620 ever.
3621
3622 6. Some uncommon configurations may cause a lookup to happen in a queue runner
3623 process, before it forks any delivery processes. The open lookup caching
3624 mechanism meant that the open file or database connection was passed into
3625 the delivery process. The problem was that delivery processes always tidy
3626 up cached lookup data. This could cause a problem for the next delivery
3627 process started by the queue runner, because the external queue runner
3628 process does not know about the closure. So the next delivery process
3629 still has data in the lookup cache. In the case of a file lookup, there was
3630 no problem because closing a file descriptor in a subprocess doesn't affect
3631 the parent. However, if the lookup was caching a connection to a database,
3632 the connection was closed, and the second delivery process was likely to
3633 see errors such as "PGSQL: query failed: server closed the connection
3634 unexpectedly". The problem has been fixed by closing all cached lookups
3635 in a queue runner before running a delivery process.
3636
3637 7. Compiler warning on Linux for the second argument of iconv(), which doesn't
3638 seem to have the "const" qualifier which it has on other OS. I've
3639 parameterised it.
3640
3641 8. Change 4.21/2 was too strict. It is only if there are two authenticators
3642 *of the same type* (client or server) with the same public name that an
3643 error should be diagnosed.
3644
3645 9. When Exim looked up a host name for an IP address, but failed to find the
3646 original IP address when looking up the host name (a safety check), it