Diagnose an error for "seen", "unseen", or "noerror" if not followed by
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
41609df5 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.372 2006/07/07 14:36:04 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
42119b09
PH
86PH/14 In the default configuration, change the use of "message" in ACL warn
87 statements to "add_header".
88
41609df5
PH
89PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
90 not followed by a command (e.g. "seen endif").
91
c59f5781 92
c887c79e
TF
93Exim version 4.62
94-----------------
95
96TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
97 other effects) broke the use of negated acl sub-conditions.
98
1cce3af8
PH
99PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
100 patch).
101
afb3eaaf
PH
102PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
103 "Deny" causes Exim to reject the incoming connection with a 554 error.
104 Unfortunately, if there is a major crisis, such as a disk failure,
105 tcp-wrappers gives "deny", whereas what one would like would be some
106 kind of temporary error. A kludge has been added to help with this.
107 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
108 554 error is used if errno is still zero or contains ENOENT (which occurs
109 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
110 451 error is used.
111
e173618b
PH
112PH/03 Add -lutil to the default FreeBSD LIBS setting.
113
dd16e114
PH
114PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
115 errors. Otherwise a message that provokes a temporary error (when other
116 messages do not) can cause a whole host to time out.
117
f7fd3850
PH
118PH/05 Batch deliveries by appendfile and pipe transports did not work when the
119 addresses were routed directly to files or pipes from a redirect router.
120 File deliveries just didn't batch; pipe deliveries might have suffered
121 odd errors.
122
d87df92c
PH
123PH/06 A failure to get a lock for a hints database would erroneously always say
124 "Failed to get write lock", even when it was really a read lock.
125
7e9f683d
PH
126PH/07 The appendfile transport was creating MBX lock files with a fixed mode
127 of 0600. This has been changed to use the value of the lockfile_mode
128 option (which defaults to 0600).
129
bfad5236
PH
130PH/08 Applied small patch from the Sieve maintainer.
131
01c490df
PH
132PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
133 folder from quota calculations, a direct delivery into this folder messed
134 up the contents of the maildirsize file. This was because the regex was
135 used only to exclude .Trash (or whatever) when the size of the mailbox
136 was calculated. There was no check that a delivery was happening into an
137 excluded directory. This bug has been fixed by ignoring all quota
138 processing for deliveries into excluded directories.
139
d6629cdc
PH
140PH/10 Added the maildirfolder_create_regex option to appendfile.
141
1cce3af8 142
214e2000
PH
143Exim version 4.61
144-----------------
145
146PH/01 The code for finding all the local interface addresses on a FreeBSD
147 system running IPv6 was broken. This may well have applied to all BSD
148 systems, as well as to others that have similar system calls. The broken
149 code found IPv4 interfaces correctly, but gave incorrect values for the
150 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
151 that it would not match correctly against @[] and not recognize the IPv6
152 addresses as local.
153
f9daeae0
PH
154PH/02 The ipliteral router was not recognizing addresses of the form user@
155 [ipv6:....] because it didn't know about the "ipv6:" prefix.
156
7e66e54d
PH
157PH/03 Added disable_ipv6.
158
c8ea1597
PH
159PH/04 Changed $reply_address to use the raw form of the headers instead of the
160 decoded form, because it is most often used to construct To: headers
161 lines in autoreplies, and the decoded form may well be syntactically
162 invalid. However, $reply_address has leading white space removed, and all
163 newlines turned into spaces so that the autoreply transport does not
164 grumble.
165
911f6fde
PH
166PH/05 If group was specified without a user on a router, and no group or user
167 was specified on a transport, the group from the router was ignored.
168
47ca6d6c
PH
169PH/06 Increased the number of ACL variables to 20 of each type, and arranged
170 for visible compile-time settings that can be used to change these
171 numbers, for those that want even more. Backwards compatibility with old
172 spool files has been maintained. However, going back to a previous Exim
173 release will lost any variables that are in spool files.
174
ed0e9820
PH
175PH/07 Two small changes when running in the test harness: increase delay when
176 passing a TCP/IP connection to a new process, in case the original
177 process has to generate a bounce, and remove special handling of
178 127.0.0.2 (sic), which is no longer necessary.
179
eff37e47
PH
180PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
181 be the same on different OS.
182
1921d2ea
PH
183PH/09 Moved a debug statement in filter processing to avoid a race problem when
184 testing.
185
b3f69ca8
JJ
186JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
187 whether --show-vars was specified or not
188
189JJ/02 exipick: Added support for new ACL variable spool format introduced
190 in 4.61-PH/06
191
424a1c63
PH
192PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
193 syntactically invalid From: or Reply-to: line, and a filter used this to
194 generate an autoreply, and therefore failed to obtain an address for the
195 autoreply, Exim could try to deliver to a non-existent relative file
196 name, causing unrelated and misleading errors. What now happens is that
197 it logs this as a hard delivery error, but does not attempt to create a
198 bounce message.
199
7a100415
PH
200PH/11 The exinext utility has a -C option for testing purposes, but although
201 the given file was scanned by exinext itself; it wasn't being passed on
202 when Exim was called.
203
19b9dc85
PH
204PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
205 an end-of-file indication when reading a command response.
206
309bd837
PH
207PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
208 compiled. In many other places in Exim, IPv6 addresses are always
209 recognized, so I have changed this. It also means that IPv4 domain
210 literals of the form [IPV4:n.n.n.n] are now always recognized.
211
59e82a2a
PH
212PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
213 used if the router is not running as root, for example, when verifying at
214 ACL time, or when using -bh. The debugging output from this situation was
215 non-existent - all you got was a failure to exec. I have made two
216 changes:
217
218 (a) Failures to set uid/gid, the current directory, or a process leader
219 in a subprocess such as that created by queryprogram now generate
220 suitable debugging ouput when -d is set.
221
222 (b) The queryprogram router detects when it is not running as root,
223 outputs suitable debugging information if -d is set, and then runs
224 the subprocess without attempting to change uid/gid.
225
9edc04ce
PH
226PH/15 Minor change to Makefile for building test_host (undocumented testing
227 feature).
228
1349e1e5
PH
229PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
230 additional section of a DNS packet that returns MX or SRV records.
231 Instead, it always explicitly searches for A/AAAA records. This avoids
232 major problems that occur when a DNS server includes only records of one
233 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
234 fixed another bug: if SRV records were looked up and the corresponding
235 address records were *not* found in the additional section, the port
236 values from the SRV records were lost.
237
ea49d0e1
PH
238PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
239 using the correct key (the original address) when searching the retry
240 rules in order to find which one to use for generating the retry hint.
241
064a94c9
PH
242PH/18 If quota_warn_message contains a From: header, Exim now refrains from
243 adding the default one. Similarly, if it contains a Reply-To: header, the
244 errors_reply_to option, if set, is not used.
245
727071f8
PH
246PH/19 When calculating a retry time, Exim used to measure the "time since
247 failure" by looking at the "first failed" field in the retry record. Now
248 it does not use this if it is later than than the arrival time of the
249 message. Instead it uses the arrival time. This makes for better
250 behaviour in cases where some deliveries succeed, thus re-setting the
251 "first failed" field. An example is a quota failure for a huge message
252 when small messages continue to be delivered. Without this change, the
253 "time since failure" will always be short, possible causing more frequent
254 delivery attempts for the huge message than are intended.
dd16e114 255 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 256
f78eb7c6
PH
257PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
258 $1, $2, $3) because the numerical variables can be reset during some
259 expansion items (e.g. "match"), thereby losing the authentication data.
260
21c28500
PH
261PH/21 Make -bV show the size of off_t variables so that the test suite can
262 decide whether to run tests for quotas > 2G.
263
264PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
265 mailbox_size, and mailbox_filecount in the appendfile transport. If a
266 filecount value is greater than 2G or if a quota value is greater than 2G
267 on a system where the size of off_t is not greater than 4, a panic error
268 is given.
269
1688f43b
PH
270PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
271 never match. The debug and -bh output now contains an explicit error
272 message indicating a malformed IPv4 address or mask.
273
274PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
275 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
276 PH/23 above applies.
277
9675b384
PH
278PH/25 Do not write to syslog when running in the test harness. The only
279 occasion when this arises is a failure to open the main or panic logs
280 (for which there is an explicit test).
281
6a3f1455
PH
282PH/26 Added the /no_tell option to "control=freeze".
283
dac79d3e
PH
284PH/27 If a host name lookup failed very early in a connection, for example, if
285 the IP address matched host_lookup and the reverse lookup yielded a name
286 that did not have a forward lookup, an error message of the form "no IP
287 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
288 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 289
5977a0b3
PH
290PH/28 An enabling patch from MH: add new function child_open_exim2() which
291 allows the sender and the authenticated sender to be set when
292 submitting a message from within Exim. Since child_open_exim() is
293 documented for local_scan(), the new function should be too.
294
c91535f3
PH
295PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
296 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
297 results in an empty string is now treated as unset.
298
0d46a8c8
PH
299PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
300
278c6e6c
PH
301PH/31 Added sender_verify_fail logging option.
302
2cbb4081
PH
303PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
304 needed by RFC 822 but not by RFC 2822 was commented out. I have now
305 tidied the source and removed it altogether.
306
3eef829e
PH
307PH/33 When a queue run was abandoned because the load average was too high, a
308 log line was always written; now it is written only if the queue_run log
309 selector is set. In addition, the log line for abandonment now contains
310 information about the queue run such as the pid. This is always present
311 in "start" and "stop" lines but was omitted from the "abandon" line.
312
1ab95fa6
PH
313PH/34 Omit spaces between a header name and the colon in the error message that
314 is given when verify = headers_syntax fails (if there are lots of them,
315 the message gets confusing).
316
230205fc
PH
317PH/35 Change the default for dns_check_names_pattern to allow slashes within
318 names, as there are now some PTR records that contain slashes. This check
319 is only to protect against broken name servers that fall over on strange
320 characters, so the fact that it applies to all lookups doesn't matter.
321
75e0e026
PH
322PH/36 Now that the new test suite is complete, we can remove some of the
323 special code in Exim that was needed for the old test suite. For example,
324 sorting DNS records because real resolvers return them in an arbitrary
325 order. The new test suite's fake resolver always returns records in the
326 same order.
327
328PH/37 When running in the test harness, use -odi for submitted messages (e.g.
329 bounces) except when queue_only is set, to avoid logging races between
330 the different processes.
331
145396a6
PH
332PH/38 Panic-die if .include specifies a non-absolute path.
333
3cd34f13
PH
334PH/39 A tweak to the "H" retry rule from its user.
335
11121d3d
JJ
336JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
337 a label. They prevented compilation on older perls.
338
339JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
340 a warning to be raised on newish perls.
341
342JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
343 on queue. Changes to match documented behaviour of showing count of
344 messages matching specified criteria.
345
8def5aaf
PH
346PH/40 Changed the default ident timeout from 30s to 5s.
347
929ba01c
PH
348PH/41 Added support for the use of login_cap features, on those BSD systems
349 that have them, for controlling the resources used by pipe deliveries.
350
2632889e
PH
351PH/42 The content-scanning code uses fopen() to create files in which to put
352 message data. Previously it was not paying any attention to the mode of
353 the files. Exim runs with umask(0) because the rest of the code creates
354 files with open(), and sets the required mode explicitly. Thus, these
355 files were ending up world-writeable. This was not a big issue, because,
356 being within the spool directory, they were not world-accessible. I have
357 created a function called modefopen, which takes an additional mode
358 argument. It sets umask(777), creates the file, chmods it to the required
359 mode, then resets the umask. All the relevant calls to fopen() in the
360 content scanning code have been changed to use this function.
361
944a9c55
PH
362PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
363 to 24 hours. This avoids potential overflow problems when processing G
364 and H retry rules. I suspect nobody ever tinkers with this value.
365
4a23603b
PH
366PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
367
4730f942
PH
368PH/45 When the plaintext authenticator is running as a client, the server's
369 challenges are checked to ensure they are valid base64 strings. By
370 default, the authentication attempt is cancelled if an invalid string is
371 received. Setting client_ignore_invalid_base64 true ignores these errors.
372 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
373 they are received. Thus, the responses can be made to depend on the
374 challenges. If an invalid string is ignored, an empty string is placed in
375 the variable.
376
30dba1e6
PH
377PH/46 Messages that are created by the autoreply transport now contains a
378 References: header, in accordance with RFCs 2822 and 3834.
379
382afc6b
PH
380PH/47 Added authenticated_sender_force to the smtp transport.
381
a86229cf
PH
382PH/48 The ${prvs expansion was broken on systems where time_t was long long.
383
50c99ba6
PH
384PH/49 Installed latest patch from the Sieve maintainer.
385
d35e429d
PH
386PH/50 When an Exim quota was set without a file count quota, and mailbox_size
387 was also set, the appendfile transport was unnecessarily scanning a
388 directory of message files (e.g. for maildir delivery) to find the count
389 of files (along with the size), even though it did not need this
390 information. It now does the scan only if it needs to find either the
391 size of the count of files.
392
f90d018c
PH
393PH/51 Added ${time_eval: to convert Exim time strings into seconds.
394
75def545
PH
395PH/52 Two bugs concerned with error handling when the smtp transport is
396 used in LMTP mode:
397
398 (i) Exim was not creating retry information for temporary errors given
399 for individual recipients after the DATA command when the smtp transport
400 was used in LMTP mode. This meant that they could be retried too
401 frequently, and not timed out correctly.
402
403 (ii) Exim was setting the flag that allows error details to be returned
404 for LMTP errors on RCPT commands, but not for LMTP errors for individual
405 recipients that were returned after the DATA command.
406
407PH/53 This is related to PH/52, but is more general: for any failing address,
408 when detailed error information was permitted to be returned to the
409 sender, but the error was temporary, then after the final timeout, only
410 "retry timeout exceeded" was returned. Now it returns the full error as
411 well as "retry timeout exceeded".
412
c46782ef
PH
413PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
414 do this, and (what is worse) MTAs that accept it.
415
71fafd95
PH
416PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
417 will now be deprecated.
418
2c5db4fd
PH
419PH/56 New os.c-cygwin from the Cygwin maintainer.
420
9cf6b11a
JJ
421JJ/06 exipick: added --unsorted option to allow unsorted output in all output
422 formats (previously only available in exim formats via -bpr, -bpru,
423 and -bpra. Now also available in native and exiqgrep formats)
424
425JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
426 with very large, slow to parse queues
427
428JJ/08 exipick: added ! as generic prefix to negate any criteria format
429
430JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
431
898d150f
PH
432PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
433 responses to authentication challenges, though it was showing the
434 challenges; (ii) I've removed the CR characters from the debug output for
435 SMTP output lines.
436
46218253
PH
437PH/58 Allow for the insertion of a newline as well as a space when a string
438 is turned into more than one encoded-word during RFC 2047 encoding. The
439 Sieve code now uses this.
440
e97957bc
PH
441PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
442 data_4xx, lost_connection, tls_required.
443
81e509d7
PH
444PH/60 When a VRFY deferred or FAILED, the log message rather than the user
445 message was being sent as an SMTP response.
446
3d240ff7
PH
447PH/61 Add -l and -k options to exicyclog.
448
b37c4101
PH
449PH/62 When verifying, if an address was redirected to one new address, so that
450 verification continued, and the new address failed or deferred after
451 having set something in $address_data, the value of $address_data was not
452 passed back to the ACL. This was different to the case when no
453 redirection occurred. The value is now passed back in both cases.
454
79378e0f
PH
455PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
456 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
457 use login_cap.h, so on its own it isn't the distinguishing feature. The
458 new name refers directly to the setclassresources() function.
459
e49c7bb4
PH
460PH/65 Added configuration files for NetBSD3.
461
d114ec46
PH
462PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
463
f3d7df6c
PH
464PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
465 is preferred over IPv4.
466
715ab376
PH
467PH/68 The bounce_return_message and bounce_return_body options were not being
468 honoured for bounces generated during the reception of non-SMTP messages.
469 In particular, this applied to messages rejected by the ACL. This bug has
470 been fixed. However, if bounce_return_message is true and bounce_return_
471 body is false, the headers that are returned for a non-SMTP message
472 include only those that have been read before the error was detected.
473 (In the case of an ACL rejection, they have all been read.)
474
6b31b150
PH
475PH/69 The HTML version of the specification is now built in a directory called
476 spec_html instead of spec.html, because the latter looks like a path with
477 a MIME-type, and this confuses some software.
478
479PH/70 Catch two compiler warnings in sieve.c.
480
d515a917
PH
481PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
482 function verify_get_ident() calls ip_connect() to connect a socket, but
483 if the "connect()" function timed out, ip_connect() used to close the
484 socket. However, verify_get_ident() also closes the socket later, and in
485 between Exim writes to the log, which may get opened at this point. When
486 the socket was closed in ip_connect(), the log could get the same file
487 descriptor number as the socket. This naturally causes chaos. The fix is
488 not to close the socket in ip_connect(); the socket should be closed by
489 the function that creates it. There was only one place in the code where
490 this was missing, in the iplookup router, which I don't think anybody now
491 uses, but I've fixed it anyway.
492
9b8fadde
PH
493PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
494 well as to direct DNS lookups. Otherwise the handling of names in host
495 lists is inconsistent and therefore confusing.
496
214e2000 497
5de37277
PH
498Exim version 4.60
499-----------------
500
cc38ddbf
PH
501PH/01 Two changes to the default runtime configuration:
502
503 (1) Move the checks for relay_from_hosts and authenticated clients from
504 after to before the (commented out) DNS black list checks.
505
506 (2) Add control=submission to the relay_from_hosts and authenticated
507 clients checks, on the grounds that messages accepted by these
508 statements are most likely to be submissions.
5de37277 509
72fdd6ae
PH
510PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
511
512 (1) Generate an error if the third argument for the ${prvs expansion is
513 not a single digit.
514
515 (2) Treat a missing third argument of ${prvscheck as if it were an empty
516 string.
517
518 (3) Reset the variables that are obtained from the first argument of
519 ${prvscheck and used in the second argument before leaving the code,
520 because their memory is reclaimed, so using them afterwards may do
521 silly things.
522
523 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
524 one (it's much easier than Tom thought :-).
525
526 (5) Because of (4), we can now allow for the use of $prvscheck_result
527 inside the third argument.
cb9328de 528
cb741023
PH
529PH/03 For some reason, the default setting of PATH when running a command from
530 a pipe transport was just "/usr/bin". I have changed it to
531 "/bin:/usr/bin".
532
f174f16e
PH
533PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
534 anything to be listed in the output from -bV.
b2f5a032 535
c25242d7
PH
536PH/05 When a filter generated an autoreply, the entire To: header line was
537 quoted in the delivery log line, like this:
538
539 => >A.N.Other <ano@some.domain> <original@ddress> ...
540
541 This has been changed so that it extracts the operative address. There
542 may be more than one such address. If so, they are comma-separated, like
543 this:
544
545 => >ano@some.domain,ona@other.domain <original@ddress> ...
546
82c19f95
PH
547PH/06 When a client host used a correct literal IP address in a HELO or EHLO
548 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
549 not being looked up in the rDNS to get a host name, Exim was showing the
550 IP address twice in Received: lines, even though the IP addresses were
551 identical. For example:
552
553 Received: from [1.2.3.4] (helo=[1.2.3.4])
554
555 However, if the real host name was known, it was omitting the HELO data
556 if it matched the actual IP address. This has been tidied up so that it
557 doesn't show the same IP address twice.
558
d7ffbc12
PH
559PH/07 When both +timestamp and +memory debugging was on, the value given by
560 $tod_xxx expansions could be wrong, because the tod_stamp() function was
561 called by the debug printing, thereby overwriting the timestamp buffer.
562 Debugging no longer uses the tod_stamp() function when +timestamp is set.
563
9f526266
PH
564PH/08 When the original message was included in an autoreply transport, it
565 always said "this is a copy of the message, including all the headers",
566 even if body_only or headers_only was set. It now gives an appropriate
567 message.
568
87fcc8b9
PH
569PH/09 Applied a patch from the Sieve maintainer which:
570
571 o fixes some comments
572 o adds the (disabled) notify extension core
573 o adds some debug output for the result of if/elsif tests
574 o points to the current vacation draft in the documentation
575 and documents the missing references header update
576
577 and most important:
578
579 o fixes a bug in processing the envelope test (when testing
580 multiple envelope elements, the last element determinted the
581 result)
582
456682f5
PH
583PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
584 Electronic Mail") by including:
585
586 Auto-submitted: auto-generated
587
588 in the messages that it generates (bounce messages and others, such as
589 warnings). In the case of bounce messages for non-SMTP mesages, there was
590 also a typo: it was using "Auto_submitted" (underscore instead of
591 hyphen). Since every message generated by Exim is necessarily in response
592 to another message, thes have all been changed to:
593
594 Auto-Submitted: auto-replied
595
596 in accordance with these statements in the RFC:
597
598 The auto-replied keyword:
599
600 - SHOULD be used on messages sent in direct response to another
601 message by an automatic process,
602
603 - MUST NOT be used on manually-generated messages,
604
605 - MAY be used on Delivery Status Notifications (DSNs) and Message
606 Disposition Notifications (MDNs),
607
608 - MUST NOT be used on messages generated by automatic or periodic
609 processes, except for messages which are automatic responses to
610 other messages.
611
3e46c1aa
PH
612PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
613 to the default Received: header definition.
456682f5 614
49826d12
PH
615PH/12 Added log selector acl_warn_skipped (default on).
616
eba0c039
PH
617PH/13 After a successful wildlsearch lookup, discard the values of numeric
618 variables because (a) they are in the wrong storage pool and (b) even if
619 they were copied, it wouldn't work properly because of the caching.
620
a0d6ba8a
PH
621PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
622 checking when decoding. Apparently there are clients that generate
623 overlong encoded strings. Why am I not surprised?
624
f0917727
PH
625PH/15 If the first argument of "${if match_address" was not empty, but did not
626 contain an "@" character, Exim crashed. Now it writes a panic log message
627 and treats the condition as false.
628
096fee00
PH
629PH/16 In autoreply, treat an empty string for "once" the same as unset.
630
024bd3c2
PH
631PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
632 extension "envelope-auth". The code is finished and in agreement with
633 other implementations, but there is no documentation so far and in fact,
634 nobody wrote the draft yet. This extension is currently #undef'ed, thus
635 not changing the active code.
636
637 Print executed "if" and "elsif" statements when debugging is used. This
638 helps a great deal to understand what a filter does.
639
640 Document more things not specified clearly in RFC3028. I had all this
641 sorted out, when out of a sudden new issues came to my mind. Oops."
642
df199fec
PH
643PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
644 (Bugzilla #53).
645
d27f1df3
PH
646PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
647 canonical form (as documented). However, after a host name lookup from
648 the IP address, check_host() was doing a simple string comparison with
649 addresses acquired from the DNS when checking that the found name did
650 have the original IP as one of its addresses. Since any found IPv6
651 addresses are likely to be in abbreviated form, the comparison could
652 fail. Luckily, there already exists a function for doing the comparison
653 by converting both addresses to binary, so now that is used instead of
654 the text comparison.
655
96776534
PH
656PH/20 There was another similar case to PH/19, when a complete host name was
657 given in a host list; looking up its IP address could give an abbreviated
658 form, whereas the current host's name might or might not be abbreviated.
659 The same fix has been applied.
660
5de37277 661
9a799bc0
PH
662Exim version 4.54
663-----------------
664
665PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
666 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
667 It now does.
668
99a4b039
PH
669PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
670 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
671
672PH/03 Typo: missing ".o" in src/pcre/Makefile.
673
4b233853
PH
674PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
675 header line, restrict the check to what is listed in RFCs 2369 and 2929.
676 Also, for "Auto-Submitted", treat anything other than "no" as
677 non-personal, in accordance with RFC 3834. (Previously it treated
678 anything starting "auto-" as non-personal.)
679
8857ccfd
PH
680TF/01 The control=submission/name=... option had a problem with syntax
681 errors if the name included a slash character. The /name= option
682 now slurps the rest of the string, so it can include any characters
683 but it must come last in the list of options (after /sender_retain
684 or /domain=).
685
433a2980
PH
686PH/05 Some modifications to the interface to the fake nameserver for the new
687 testing suite.
688
3e46c1aa 689
9a799bc0 690
e3a311ba
TK
691Exim version 4.53
692-----------------
693
694TK/01 Added the "success_on_redirect" address verification option. See
695 NewStuff for rationale and an example.
696
13b685f9
PH
697PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
698
395ff96d
PH
699PH/02 Patch to exigrep to allow it to work on syslog lines.
700
5b68f6e4
PH
701PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
702 fread() to skip over the body file's header line, because in Cygwin the
703 header line is locked and is inaccessible.
704
1ab52c69
PH
705PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
706 co-exist for some time) to make it clear that it is the Exim ID that is
707 referenced, not the Message-ID: header line.
708
b07e6aa3
PH
709PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
710 string_format() function, because snprintf() does not exist on all
711 operating systems.
712
254e032f
PH
713PH/06 The use of forbid_filter_existstest now also locks out the use of the
714 ${stat: expansion item.
715
3af76a81
PH
716PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
717 protocol synchronization error", to keep the pedants happy.
718
2548ba04
PH
719PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
720 well as for IRIX systems, when gcc is being used. See the host.c source
721 file for comments.
722
b6c6011d
PH
723PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
724
cf39cf57
PH
725PH/10 Named domain lists were not working if used in a queue_smtp_domains
726 setting.
727
f1513293
PH
728PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
729 transport and to the smtp transport in LMTP mode.
730
727549a4
PH
731TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
732
af46795e
PH
733PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
734 run a filter in a subprocess. This could lead to confusion in subsequent
735 lookups in the parent process. There should also be a search_tidyup() at
736 the end of the subprocess.
737
d7b47fd0
PH
738PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
739 only if the host matched helo_try_verify_hosts, which caused the
740 verification to occur when the EHLO/HELO command was issued. The ACL just
741 tested the remembered result. Now, if a previous verification attempt has
742 not happened, "verify = helo" does it there and then.
743
ee744174
JJ
744JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
745
b582ab87
PH
746TK/03 Fix log output including CR from clamd.
747
41a13e0a
PH
748PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
749 exist provoked a memory error which could cause a segfault.
750
f625cc5a
PH
751PH/15 Installed PCRE 6.2
752
753PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
754
21f7af35
PH
755PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
756 of the problem. Specifically, suggested +O2 rather than +O1 for the
757 HP-UX compiler.
758
31480e42
PH
759PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
760
2d280592
PH
761PH/20 If a delivery was routed to a non-standard port by means of an SRV
762 record, the port was not correctly logged when the outgoing_port log
763 selector was set (it logged the transort's default port).
764
7cd1141b
PH
765PH/21 Added support for host-specific ports to manualroute, queryprogram,
766 fallback_hosts, and "hosts" in the smtp transport.
767
768PH/22 If the log selector "outgoing_port" is set, the port is now also given on
769 host errors such as "Connection refused".
770
750af86e
PH
771PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
772 authentication with radiusclient 0.4.9:
773
774 - Error returned from rc_read_config was caught wrongly
775 - Username/password not passed on to radius server due to wrong length.
776
777 The presumption is that some radiusclient API changes for 4.51/PH/17
778 were not taken care of correctly. The code is still untested by me (my
779 Linux distribution still has 0.3.2 of radiusclient), but it was
780 contributed by a Radius user.
781
782PH/24 When doing a callout, the value of $domain wasn't set correctly when
783 expanding the "port" option of the smtp transport.
784
4304270b
TK
785TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
786 while reading a MIME header. Thanks to Tom Hughes for a patch.
787
750af86e
PH
788PH/24 Include config.h inside local_scan.h so that configuration settings are
789 available.
790
64ffc24f
PH
791PH/25 Make $smtp_command_argument available after all SMTP commands. This means
792 that in an ACL for RCPT (for example), you can examine exactly what was
793 received.
794
5dd9625b
PH
795PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
796 commands, but it was not correctly comparing the address with the actual
797 client host address. Thus, it would show the EHLO address in Received:
798 header lines when this was not necessary.
799
5591031b
PH
800PH/27 Added the % operator to ${eval:}.
801
ba18e66a
PH
802PH/28 Exim tries to create and chdir to its spool directory when it starts;
803 it should be ignoring failures (because with -C, for example, it has lost
804 privilege). It wasn't ignoring creation failures other than "already
805 exists".
806
9cec981f
PH
807PH/29 Added "crypteq" to the list of supported features that Exim outputs when
808 -bV or -d is used.
809
aa2b5c79
PH
810PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
811 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
812 too many continuations, the temporary file was not being removed, and the
813 return code was incorrect.
aa2b5c79 814
48a53b7f
PH
815PH/31 Missing "BOOL" in function definition in filtertest.c.
816
1c59d63b
PH
817PH/32 Applied Sieve patches from the maintainer.
818
671012da
TK
819TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
820
1509d3a8
PH
821PH/33 Added "verify = not_blind".
822
823PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
824 Local/Makefile (with some defaults set). These are used in built scripts
825 such as exicyclog, but they have never been used in the exim_install
826 script (though there are many overriding facilities there). I have
827 arranged that the exim_install script now takes note of these two
828 settings.
829
830PH/35 Installed configuration files for Dragonfly.
831
2fe1a124
PH
832PH/36 When a locally submitted message by a trusted user did not contain a
833 From: header, and the sender address was obtained from -f or from an SMTP
834 MAIL command, and the trusted user did not use -F to supply a sender
835 name, $originator_name was incorrectly used when constructing a From:
836 header. Furthermore, $originator_name was used for submission mode
837 messages from external hosts without From: headers in a similar way,
838 which is clearly wrong.
839
8800895a
PH
840PH/37 Added control=suppress_local_fixups.
841
ccfdb010
PH
842PH/38 When log_selector = +received_sender was set, and the addition of the
843 sender made the log line's construction buffer exactly full, or one byte
844 less than full, an overflow happened when the terminating "\n" was
845 subsequently added.
846
1130bfb0
PH
847PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
848 when the result of a list match is failure because a DNS lookup failed.
849
ebcb507f
PH
850PH/40 RM_COMMAND is now used in the building process.
851
c35e155c
PH
852PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
853 the "build-* directories that it finds.
854
95d1f782
PH
855PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
856 address in a domain literal was a prefix of an interface address.
857
fd6de02e
PH
858PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
859 when verifying a sender address, unless rewrite_headers is false.
860
58de37c5
PH
861PH/44 Wrote a long comment about why errors_to addresses are verified as
862 recipients, not senders.
863
261cf466
TF
864TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
865 the ratelimit ACL was added.
866
3ee512ff
PH
867PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
868
e08c430f
PH
869PH/46 Added extra information about PostgreSQL errors to the error string.
870
bef5a11f
PH
871PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
872 avoiding the need to install special zones in a real server. This is
873 backwards compatible; if it can't find the fake resolver, it drops back.
874 Thus, both old and new test suites can be run.
875
7546de58
TF
876TF/02 Added util/ratelimit.pl
877
e5d5a95f
TF
878TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
879 clock is set back in time.
880
2e88a017
TF
881TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
882 Candler <B.Candler@pobox.com>.
883
a5f65aa4
TF
884TF/05 The fix for PH/43 was not completely correct; widen_domains is always
885 OK for addresses that are the result of redirections.
886
e7726cbf
PH
887PH/48 A number of further additions for the benefit of the new test suite,
888 including a fake gethostbyname() that interfaces to the fake DNS resolver
889 (see PH/47 above).
890
a7fdad5b
TF
891TF/06 The fix for widen_domains has also been applied to qualify_single and
892 search_parents which are the other dnslookup options that can cause
893 header rewrites.
894
6af56900
PH
895PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
896 type ("H").
897
0925ede6
PH
898PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
899
66afa403
TF
900TF/07 Exim produced the error message "an SRV record indicated no SMTP
901 service" if it encountered an MX record with an empty target hostname.
902 The message is now "an MX or SRV record indicated no SMTP service".
903
0154e85a
TF
904TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
905 if the DNS of the sending site is misconfigured. This is quite a
906 common situation. This change restores the behaviour of treating a
907 helo verification defer as a failure.
908
16f12c76
PH
909PH/51 If self=fail was set on a router, the bounce message did not include the
910 actual error message.
911
bbe902f0 912
e5a9dba6
PH
913Exim version 4.52
914-----------------
915
916TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
917
22c3b60b
PH
918PH/01 When a transport filter timed out in a pipe delivery, and the pipe
919 command itself ended in error, the underlying message about the transport
920 filter timeout was being overwritten with the pipe command error. Now the
921 underlying error message should be appended to the second error message.
922
06a9b4b5
PH
923TK/01 Fix poll() being unavailable on Mac OSX 10.2.
924
c1ac6996
PH
925PH/02 Reduce the amount of output that "make" produces by default. Full output
926 can still be requested.
927
9c7a242c
PH
928PH/03 The warning log line about a condition test deferring for a "warn" verb
929 was being output only once per connection, rather than after each
930 occurrence (because it was using the same function as for successful
931 "warn" verbs). This seems wrong, so I have changed it.
932
87ba3f5f
PH
933TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
934 it should not have, which might have caused a crash in the right
935 circumstances, but probably never did.
936
937PH/04 Installed a modified version of Tony Finch's patch to make submission
938 mode fix the return path as well as the Sender: header line, and to
939 add a /name= option so that you can make the user's friendly name appear
940 in the header line.
941
29aba418
TF
942TF/03 Added the control = fakedefer ACL modifier.
943
fe0dab11
TF
944TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
945 Mark Lowes for thorough testing.
870f6ba8 946
11d337a4
TK
947TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
948
949TK/03 Merged latest SRS patch from Miles Wilton.
950
415c8f3b
PH
951PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
952 with the definition in sysexits.h (which is #included earlier).
953 Fortunately, Exim does not actually use EX_OK. The code used to try to
954 preserve the sysexits.h value, by assumimg that macro definitions were
955 scanned for macro replacements. I have been disabused of this notion,
956 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 957
958541e9
PH
958PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
959 in the smtp transport. When a block could not be written in a single
960 write() function, the timeout was being re-applied to each part-write.
961 This seems wrong - if the receiver was accepting one byte at a time it
962 would take for ever. The timeout is now adjusted when this happens. It
963 doesn't have to be particularly precise.
964
c206415f
TK
965TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
966 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
967
2a4be8f9
PH
968PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
969 without a domain if the check to <postmaster@domain> fails.
970
1cba11c5
SC
971SC/01 Eximstats: added -xls and the ability to specify output files
972 (patch written by Frank Heydlauf).
973
974SC/02 Eximstats: use FileHandles for outputing results.
975
976SC/03 Eximstats: allow any combination of xls, txt, and html output.
977
978SC/04 Eximstats: fixed display of large numbers with -nvr option
979
980SC/05 Eximstats: fixed merging of reports with empty tables.
981
982SC/06 Eximstats: added the -include_original_destination flag
983
984SC/07 Eximstats: removed tabs and trailing whitespace.
985
1005d00e
TK
986TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
987
988TK/06 MBOX spool code: Add real "From " MBOX separator line
989 so the .eml file is really in mbox format (even though
990 most programs do not really care). Patch from Alex Miller.
991
992TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
993 The latter is generated from $received_to and is only set if the
994 message has one envelope recipient. SA can use these headers,
995 obviously out-of-the-box. Patch from Alex Miller.
996
9b4768fa
PH
997PH/08 The ${def test on a variable was returning false if the variable's
998 value was "0", contrary to what the specification has always said!
999 The result should be true unless the variable is empty.
1000
1001PH/09 The syntax error of a character other than { following "${if
1002 def:variable_name" (after optional whitespace) was not being diagnosed.
1003 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1004 accidental colon was present, for example, could give incorrect results.
1005
0d7eb84a
PH
1006PH/10 Tidied the code in a number of places where the st_size field of a stat()
1007 result is used (not including appendfile, where other changes are about
1008 to be made).
1009
1010PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1011 This involved changing a lot of size variables from int to off_t. It
1012 should work with maildirs and everything.
1013
40727bee
TK
1014TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1015 spamd dying while we are connected to it.
1016
554d2369
TF
1017TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1018 <jgh@wizmail.org>
1019
1f922db1
PH
1020PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1021 function for BDB 4.3.
1022
ef213c3b
PH
1023PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1024
8ac170f3
PH
1025PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1026 the sources for PCRE have been re-arranged and more files are now
1027 involved.
1028
b1c749bb
PH
1029PH/15 The code I had for printing potentially long long variables in PH/11
1030 above was not the best (it lost precision). The length of off_t variables
1031 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1032 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1033 to be "long long int" or "long int". This is needed for the internal
1034 formatting function string_vformat().
b1c749bb 1035
4aac9b49
PH
1036PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1037 the configuration file to be ":syslog", then the script "guesses" where
1038 the logs files are, rather than using the compiled in default. In our
1039 case the guess is not the same as the compiled default, so the script
1040 suddenly stopped working when I started to use syslog. The patch checks
1041 to see if log_file_path is "". If so, it attempts to read it from exim
1042 with no configuration file to get the compiled in version, before it
1043 falls back to the previous guessing code."
1044
294520c8
TK
1045TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1046 implementing BATV in an Exim configuration. See NewStuff for the gory
1047 details.
1048
5bd022fe
PH
1049PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1050 Makefile that are specific to HP-UX.
1051
90e9ce59
PH
1052PH/18 If the "use_postmaster" option was set for a recipient callout together
1053 with the "random" option, the postmaster address was used as the MAIL
1054 FROM address for the random test, but not for the subsequent recipient
1055 test. It is now used for both.
1056
5ea81592
PH
1057PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1058 patch removes a few documentation additions to RFC 3028, because the
1059 latest draft now contains them. It adds the new en;ascii-case comparator
1060 and a new error check for 8bit text in MIME parts. Comparator and
1061 require names are now matched exactly. I enabled the subaddress
1062 extension, but it is not well tested yet (read: it works for me)."
1063
c6c2dc1d
PH
1064PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1065 rework some of the code of TK/09 above to avoid the hardwired use of
1066 "%lld" and "long long". Replaced the call to snprintf() with a call to
1067 string_vformat().
1068
fffffe4c
PH
1069PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1070 records point to non-existent hosts", "retry timeout exceeded", and
1071 "retry time not reached for any host after a long failure period".
ca02eafb 1072
9a26b6b2
PH
1073PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1074 experimental DomainKeys support:
1075
1076 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1077 (2) On an error such as an illegally used "control", the wrong name for
1078 the control was given.
1079
1080 These problems did NOT occur unless DomainKeys support was compiled.
1081
4aee0225
PH
1082PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1083
32d668a5
PH
1084PH/24 Added ${if match_ip condition.
1085
8187c3f3
PH
1086PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1087 databases so that it will be absolutely obvious if a crash occurs in the
1088 DB library. This is a regular occurrence (often caused by mis-matched
1089 db.h files).
1090
ff790e47 1091PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1092 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1093 picked up on a user's system that detects such things. There doesn't seem
1094 to be a gcc warning option for this - only an attribute that has to be
1095 put on the function's prototype. It seems that in Fedora Core 4 they have
1096 set this on a number of new functions. No doubt there will be more in due
1097 course.
ff790e47 1098
5417f6d1
PH
1099PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1100 specify a transport. However, if an address that was verified by such a
1101 router was the subject of a callout, Exim crashed because it tried to
1102 read the rcpt_include_affixes from the non-existent transport. Now it
1103 just assumes that the setting of that option is false. This bug was
1104 introduced by 4.51/PH/31.
1105
59cf8544
PH
1106PH/28 Changed -d+all to exclude +memory, because that information is very
1107 rarely of interest, but it makes the output a lot bigger. People tend to
1108 do -d+all out of habit.
1109
e7ad8a65
PH
1110PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1111 code in os-type was giving problems when libc.so lives in lib64, like on
1112 x86_64 Fedora Core.
1113
ade42478
PH
1114PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1115 aren't the modern standard, and it seems that some systems' include files
1116 don't always have them. Exim was already checking for some of the newer
1117 ones like T_AAAA, and defining it itself. I've added checks for all the
1118 record types that Exim uses.
1119
182ad5cf
PH
1120PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1121 not automatically generating a new one, as it is supposed to. This
1122 prevented TLS from working. If the file did exist, but contained invalid
1123 data, a new version was generated, as expected. It was only the case of a
1124 non-existent file that was broken.
1125
b0d9fc80
TK
1126TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1127 with a change in libdomainkeys > 0.64.
1128
1129TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1130 from DNS. If the selector record carries the flag, it now has
1131 precedence over the domain-wide flag.
1132
1133TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1134
47c7a64a
PH
1135PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1136 the use of a port name that isn't defined in /etc/services) occurred, the
1137 message was deferred as in a normal delivery, and thus remained on the
1138 spool, instead of being failed because of the mua_wrapper setting. This
1139 is now fixed, and I tidied up some of the mua_wrapper messages at the
1140 same time.
1141
a388bce4
SC
1142SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1143 the messages in a hash of arrays rather than using individual hashes.
1144 This is a bit cleaner and results in dramatic memory savings, albeit
1145 at a slight CPU cost.
1146
1147SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1148 as requested by Marc Sherman.
1149
1150SC/10 Eximstats: added histograms for user specified patterns as requested
1151 by Marc Sherman.
1152
0793e4ed
SC
1153SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1154
c58b88df
PH
1155PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1156 fopen() in the content-scanning modules that did not already have it.
1157
e7ad8a65 1158
7982096b
PH
1159Exim version 4.51
1160-----------------
1161
1a46a8c5
PH
1162TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1163 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1164
2f079f46 1165TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1166
1167TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1168
1169PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1170 to test Sieve filters that use "vacation".
1171
1172PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1173 that changes the way the GnuTLS parameters are stored in the cache file.
1174 The new format can be generated externally. For backward compatibility,
1175 if the data in the cache doesn't make sense, Exim assumes it has read an
1176 old-format file, and it generates new data and writes a new file. This
1177 means that you can't go back to an older release without removing the
1178 file.
1179
1180PH/03 A redirect router that has both "unseen" and "one_time" set does not
1181 work if there are any delivery delays because "one_time" forces the
1182 parent to be marked "delivered", so its unseen clone is never tried
1183 again. For this reason, Exim now forbids the simultaneous setting of
1184 these two options.
1185
1186PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1187 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1188 entry if you want to know the details. The fix, however, neglected to
1189 consider the case when local delivery batching is involved. The test for
1190 "previously delivered" was not happening when checking to see if an
1191 address could be batched with a previous (undelivered) one; under
1192 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1193 address.
1a46a8c5
PH
1194
1195PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1196 in its include files, and this causes problems building Exim.
1197
1198PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1199 header_syntax) but Exim was just ignoring anything given after a slash.
1200 In particular, this caused confusion with an attempt to use "verify =
1201 reverse_host_lookup/defer_ok". An error is now given when options are
1202 supplied for verify items that do not have them. (Maybe reverse_host_
1203 lookup should have a defer_ok option, but that's a different point.)
1204
1205PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1206 defined by RFC 821) to 2048, because there were problems with some AUTH
1207 commands, and RFC 1869 says the size should be increased for extended
1208 SMTP commands that take arguments.
1209
1210PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1211 Finch).
1212
1213PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1214 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1215
49c2d5ea
PH
1216PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1217 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1218 whatever). Otherwise the password may appear in the log. Following change
1219 PH/42 below, there is no longer a chance of it appearing in a bounce
1220 message.
49c2d5ea 1221
bf759a8b
PH
1222PH/11 Installed exipick version 20050225.0 from John Jetmore.
1223
83364d30
PH
1224PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1225 of its addresses was ever tried. (Bugzilla bug #2.)
1226
7999bbd7
PH
1227PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1228 the result incorrectly in the debug output. (It correctly added a newline
1229 to what was transported.)
1230
7dbf77c9
PH
1231TF/01 Added $received_time.
1232
74e0617f
PH
1233PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1234 commented out examples of how to interface to a virus scanner and to
1235 SpamAssassin. Also added commented examples of av_scanner and
1236 spamd_address settings.
1237
2f079f46
PH
1238PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1239 and controls are allowed in which ACLs. There were a couple of minor
1240 errors. Some of the entries in the conditions table (which is a table of
1241 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1242 negation of where the condition IS allowed.
1243
8c841523
PH
1244PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1245
7766a4f0
PH
1246PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1247 header file does not have a version number, so I've had to invent a new
1248 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1249 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1250 radiusclient), but it was contributed by a Radius user.
1251
8b417f2c
PH
1252PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1253 files or directories, for OpenSSL.
1254
901f42cb
PH
1255PH/19 When an Exim process that is running as root has to create an Exim log
1256 file, it does so in a subprocess that runs as exim:exim so as to get the
1257 ownership right at creation (otherwise, other Exim processes might see
1258 the file with the wrong ownership). There was no test for failure of this
1259 fork() call, which would lead to the process getting stuck as it waited
1260 for a non-existent subprocess. Forks do occasionally fail when resources
1261 run out. I reviewed all the other calls to fork(); they all seem to check
1262 for failure.
1263
f9b9210e
PH
1264PH/20 When checking for unexpected SMTP input at connect time (before writing
1265 the banner), Exim was not dealing correctly with a non-positive return
1266 from the read() function. If the client had disconnected by this time,
1267 the result was a log entry for a synchronization error with an empty
1268 string after "input=" when read() returned zero. If read() returned -1
1269 (an event I could not check), uninitialized data bytes were printed.
1270 There were reports of junk text (parts of files, etc) appearing after
1271 "input=".
1272
54cdb463
PH
1273PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1274
cf00dad6
PH
1275PH/22 Added support for macro redefinition, and (re)definition in between
1276 driver and ACL definitions.
1277
acb1b346
PH
1278PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1279 forgetting to use the resulting value; it was using the unexpanded value.
1280
c5ddb310
PH
1281PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1282 hadn't been configured. The fix is from Juergen Kreileder, who
1283 understands it better than I do:
1284
1285 "Here's what I see happening with three configured cyrus_sasl
1286 authenticators configured (plain, login, cram-md5):
1287
1288 On startup auth_cyrus_sasl_init() gets called for each of these.
1289 This means three calls to sasl_listmech() without a specified mech_list.
1290 => SASL tests which mechs of all available mechs actually work
1291 => three warnings about OTP not working
1292 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1293
1294 With the patch, sasl_listmech() also gets called three times. But now
1295 SASL's mech_list option is set to the server_mech specified in the the
1296 authenticator. Or in other words, the answer from sasl_listmech()
1297 gets limited to just the mech you're testing for (which is different
1298 for each call.)
1299 => the return list contains just 'plain' or 'login', 'cram-md5' or
1300 nothing depending on the value of ob->server_mech.
1301
1302 I've just tested the patch: Authentication still works fine,
1303 unavailable mechs specified in the exim configuration are still
1304 caught, and the auth.log warnings about OTP are gone."
1305
31619da6
PH
1306PH/25 When debugging is enabled, the contents of the command line are added
1307 to the debugging output, even when log_selector=+arguments is not
1308 specified.
1309
bebaf0fc
PH
1310PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1311 answer is "GNU", and only if the return is "GNU/something" is the answer
1312 "Linux".
1313
475fe28a
PH
1314PH/27 $acl_verify_message is now set immediately after the failure of a
1315 verification in an ACL, and so is available in subsequent modifiers. In
1316 particular, the message can be preserved by coding like this:
1317
1318 warn !verify = sender
1319 set acl_m0 = $acl_verify_message
1320
1321 Previously, $acl_verify_message was set only while expanding "message"
1322 and "log_message" when a very denied access.
1323
7e8bec7a
PH
1324PH/28 Modified OS/os.c-Linux with
1325
1326 -#ifndef OS_LOAD_AVERAGE
1327 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1328
1329 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1330 nomenclature these days.)
1331
e4a89c47
PH
1332PH/29 Installed patch from the Sieve maintainer that adds the options
1333 sieve_useraddress and sieve_subaddress to the redirect router.
1334
5ca2a9a1
PH
1335PH/30 In these circumstances:
1336 . Two addresses routed to the same list of hosts;
1337 . First host does not offer TLS;
1338 . First host accepts first address;
1339 . First host gives temporary error to second address;
1340 . Second host offers TLS and a TLS session is established;
1341 . Second host accepts second address.
1342 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1343 and peerdn, if requested) that were in fact used only for the second
1344 address.
7e8bec7a 1345
c688b954
PH
1346PH/31 When doing a callout as part of verifying an address, Exim was not paying
1347 attention to any local part prefix or suffix that was matched by the
1348 router that accepted the address. It now behaves in the same way as it
1349 does for delivery: the affixes are removed from the local part unless
1350 rcpt_include_affixes is set on the transport.
1351
fed77020
PH
1352PH/32 Add the sender address, as F=<...>, to the log line when logging a
1353 timeout during the DATA phase of an incoming message.
1354
7fe1560f
PH
1355PH/33 Sieve envelope tests were broken for match types other than :is. I have
1356 applied a patch sanctioned by the Sieve maintainer.
c688b954 1357
ebb6e6d5
PH
1358PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1359 the uid or gid is negative. A case of a negative gid caused this to be
1360 noticed. The fix allows for either to be negative.
1361
9c4e8f60
PH
1362PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1363 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1364 overlooked.
1365
1366PH/36 The change PH/12 above was broken. Fixed it.
1367
d7174846
PH
1368PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1369 the grounds that routing the same address twice would always produce the
1370 same answer. This might have been true once, but it is certainly no
1371 longer true now. Routing a child address may depend on the previous
1372 routing that produced that child. Some complicated redirection strategies
1373 went wrong when messages had multiple recipients, and made Exim's
1374 behaviour dependent on the order in which the addresses were given.
1375
1376 I have moved the duplicate checking until after the routing is complete.
1377 Exim scans the addresses that are assigned to local and remote
1378 transports, and removes any duplicates. This means that more work will be
1379 done, as duplicates will always all be routed, but duplicates are
1380 presumably rare, so I don't expect this is of any significance.
1381
1382 For deliveries to pipes, files, and autoreplies, the duplicate checking
1383 still happens during the routing process, since they are not going to be
1384 routed further.
1385
cfe75fc3
PH
1386PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1387 It corrects a timeout issue with spamd. This is Ian's comment: "The
1388 background is that sometimes spamd either never reads data from a
1389 connection it has accepted, or it never writes response data. The exiscan
1390 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1391 blindly assumes that writes won't block so it may never time out."
1392
be22d70e
PH
1393PH/39 Allow G after quota size as well as K and M.
1394
0612b098
PH
1395PH/40 The value set for $authenticated_id in an authenticator may not contain
1396 binary zeroes or newlines because the value is written to log lines and
1397 to spool files. There was no check on this. Now the value is run through
1398 the string_printing() function so that such characters are converted to
1399 printable escape sequences.
1400
2e0c1448
PH
1401PH/41 $message_linecount is a new variable that contains the total number of
1402 lines in the message. Compare $body_linecount, which is the count for the
1403 body only.
1404
447d236c
PH
1405PH/42 Exim no longer gives details of delivery errors for specific addresses in
1406 bounce and delay warning messages, except in certain special cases, which
1407 are as follows:
1408
1409 (a) An SMTP error message from a remote host;
1410 (b) A message specified in a :fail: redirection;
1411 (c) A message specified in a "fail" command in a system filter;
1412 (d) A message specified in a FAIL return from the queryprogram router;
1413 (e) A message specified by the cannot_route_message router option.
1414
1415 In these cases only, Exim does include the error details in bounce and
1416 warning messages. There are also a few cases where bland messages such
1417 as "unrouteable address" or "local delivery error" are given.
1418
d20976dc
PH
1419PH/43 $value is now also set for the "else" part of a ${run expansion.
1420
f656d135
PH
1421PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1422 being worked on, but at least Exim now implements the latest version to
1423 play with."
1424
2e2a30b4
PH
1425PH/45 In a pipe transport, although a timeout while waiting for the pipe
1426 process to complete was treated as a delivery failure, a timeout while
1427 writing the message to the pipe was logged, but erroneously treated as a
1428 successful delivery. Such timeouts include transport filter timeouts. For
1429 consistency with the overall process timeout, these timeouts are now
1430 treated as errors, giving rise to delivery failures by default. However,
1431 there is now a new Boolean option for the pipe transport called
1432 timeout_defer, which, if set TRUE, converts the failures into defers for
1433 both kinds of timeout. A transport filter timeout is now identified in
1434 the log output.
1435
9176e9f0
PH
1436PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1437 systems where "make" and "gmake" are different, calling "gmake" at top
1438 level broke things. I've arranged for the value of $(MAKE) to be passed
1439 from the Makefile to this script so that it can call the same version of
1440 "make".
1441
7982096b 1442
bbe902f0
PH
1443A note about Exim versions 4.44 and 4.50
1444----------------------------------------
1445
1446Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1447changes of various kinds. As a consequence, a big documentation update was
1448needed. This delayed the release for rather longer than seemed good, especially
1449in the light of a couple of (minor) security issues. Therefore, the changes
1450that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1451release. So 4.44 and 4.50 are in effect two different branches that both start
1452from 4.43.
1453
1454I have left the 4.50 change log unchanged; it contains all the changes since
14554.43. The change log for 4.44 is below; many of its items are identical to
1456those for 4.50. This seems to be the most sensible way to preserve the
1457historical information.
1458
1459
f7b63901 1460Exim version 4.50
495ae4b0
PH
1461-----------------
1462
5fe762f6
PH
1463 1. Minor wording change to the doc/README.SIEVE file.
1464
139059f6 1465 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1466 computation of the current number of files was incorrect.
495ae4b0 1467
7086e875
PH
1468 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1469 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1470 place.
1471
35af9f61
PH
1472 4. Give more explanation in the error message when the command for a transport
1473 filter fails to execute.
1474
b668c215
PH
1475 5. There are several places where Exim runs a non-Exim command in a
1476 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1477 was being done only for the command run by the queryprogram router. It is
1478 now done for all such subprocesses. The other cases are: ${run, transport
1479 filters, and the commands run by the lmtp and pipe transports.
1480
a494b1e1
PH
1481 6. Added CONFIGURE_GROUP build-time option.
1482
1483 7. Some older OS have a limit of 256 on the maximum number of file
1484 descriptors. Exim was using setrlimit() to set 1000 as a large value
1485 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1486 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1487
c5fcb476
PH
1488 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1489 was an oversight, and furthermore, ever since the addition of extra
1490 controls (e.g. 4.43/32), the checks on when to allow different forms of
1491 "control" were broken. There should now be diagnostics for all cases when a
1492 control that does not make sense is encountered.
1493
69358f02
PH
1494 9. Added the /retain_sender option to "control=submission".
1495
5be20824
PH
149610. $recipients is now available in the predata ACL (oversight).
1497
eb2c0248
PH
149811. Tidy the search cache before the fork to do a delivery from a message
1499 received from the command line. Otherwise the child will trigger a lookup
1500 failure and thereby defer the delivery if it tries to use (for example) a
1501 cached ldap connection that the parent has called unbind on.
1502
2a3eea10
PH
150312. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1504 of $address_data from the recipient verification was clobbered by the
1505 sender verification.
1506
150713. The value of address_data from a sender verification is now available in
1508 $sender_address_data in subsequent conditions in the ACL statement.
1509
23c7ff99
PH
151014. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1511
4deaf07d
PH
151215. Added a new option "connect=<time>" to callout options, to set a different
1513 connection timeout.
1514
926e1192
PH
151516. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1516 was its contents. (It was OK if the option was not defined at all.)
1517
650edc6f
PH
151817. A "Completed" log line is now written for messages that are removed from
1519 the spool by the -Mrm option.
1520
2c7db3f5
PH
152118. New variables $sender_verify_failure and $recipient_verify_failure contain
1522 information about exactly what failed.
1523
3d235903
PH
152419. Added -dd to debug only the daemon process.
1525
7c7ad977
PH
152620. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1527 handles timeouts, both on the server side and network timeouts. Renamed the
1528 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1529
981756db
PH
153021. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1531 It is now set to "smtps".
1532
d4eb88df
PH
153322. $host_address is now set to the target address during the checking of
1534 ignore_target_hosts.
1535
153623. When checking ignore_target_hosts for an ipliteral router, no host name was
1537 being passed; this would have caused $sender_host_name to have been used if
1538 matching the list had actually called for a host name (not very likely,
1539 since this list is usually IP addresses). A host name is now passed as
1540 "[x.x.x.x]".
1541
7d468ab8
PH
154224. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1543 code that specifies a non-restarting handler (typically sigaction() in
1544 modern systems) in an attempt to fix a rare and obscure crash bug.
1545
154625. Narrowed the window for a race in the daemon that could cause it to ignore
1547 SIGCHLD signals. This is not a major problem, because they are used only to
1548 wake it up if nothing else does.
1549
62c0818f
PH
155026. A malformed maildirsize file could cause Exim to calculate negative values
1551 for the mailbox size or file count. Odd effects could occur as a result.
1552 The maildirsize information is now recalculated if the size or filecount
1553 end up negative.
1554
26034054
PH
155527. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1556 support for a long time. Removed HAVE_SYS_VFS_H.
1557
af66f652
PH
155828. Installed the latest version of exipick from John Jetmore.
1559
90af77f4
PH
156029. In an address list, if the pattern was not a regular expression, an empty
1561 subject address (from a bounce message) matched only if the pattern was an
1562 empty string. Non-empty patterns were not even tested. This was the wrong
1563 because it is perfectly reasonable to use an empty address as part of a
1564 database query. An empty address is now tested by patterns that are
1565 lookups. However, all the other forms of pattern expect the subject to
1566 contain a local part and a domain, and therefore, for them, an empty
1567 address still always fails if the pattern is not itself empty.
1568
d8ef3577
PH
156930. Exim went into a mad DNS loop when attempting to do a callout where the
1570 host was specified on an smtp transport, and looking it up yielded more
1571 than one IP address.
1572
5cb8cbc6
PH
157331. Re-factored the code for checking spool and log partition space into a
1574 function that finds that data and another that does the check. The former
1575 is then used to implement four new variables: $spool_space, $log_space,
1576 $spool_inodes, and $log_inodes.
1577
14702f5b
PH
157832. The RFC2047 encoding function was originally intended for short strings
1579 such as real names; it was not keeping to the 75-character limit for
1580 encoded words that the RFC imposes. It now respects the limit, and
1581 generates multiple encoded words if necessary. To be on the safe side, I
1582 have increased the buffer size for the ${rfc2047: expansion operator from
1583 1024 to 2048 bytes.
1584
063b1e99
PH
158533. It is now permitted to omit both strings after an "if" condition; if the
1586 condition is true, the result is "true". As before, when the second string
1587 is omitted, a false condition yields an empty string. This makes it less
1588 cumbersome to write custom ACL and router conditions.
1589
652e1b65
PH
159034. Failure to deliver a bounce message always caused it to be frozen, even if
1591 there was an errors_to setting on the router. The errors_to setting is now
1592 respected.
1593
6f0c9a4f
PH
159435. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1595 canonical form (fully expanded) before being placed in
1596 $sender_host_address.
1597
33397d19
PH
159836. The table in the code that translates DNS record types into text (T_A to
1599 "A" for instance) was missing entries for NS and CNAME. It is just possible
1600 that this could have caused confusion if both these types were looked up
1601 for the same domain, because the text type is used as part of Exim's
1602 per-process caching. But the chance of anyone hitting this buglet seems
1603 very small.
1604
7bb56e1f
PH
160537. The dnsdb lookup has been extended in a number of ways.
1606
1607 (1) There is a new type, "zns", which walks up the domain tree until it
1608 finds some nameserver records. It should be used with care.
1609
ea3bc19b
PH
1610 (2) There is a new type, "mxh", which is like "mx" except that it returns
1611 just the host names, not the priorities.
1612
1613 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1614 looked up. The behaviour when one of the lookups defers can be
1615 controlled by a keyword.
7bb56e1f 1616
ea3bc19b 1617 (4) It is now possible to specify the separator character for use when
7bb56e1f 1618 multiple records are returned.
33397d19 1619
0bcb2a0e
PH
162038. The dnslists ACL condition has been extended: it is now possible to supply
1621 a list of IP addresses and/or domains to be looked up in a particular DNS
1622 domain.
1623
2ac0e484
PH
162439. Added log_selector=+queue_time_overall.
1625
4e1fde53
PH
162640. When running the queue in the test harness, wait just a tad after forking a
1627 delivery process, to get repeatability of debugging output.
1628
de365ded
PH
162941. Include certificate and key file names in error message when GnuTLS fails
1630 to set them up, because the GnuTLS error message doesn't include the name
1631 of the failing file when there is a problem reading it.
1632
f05da2e8
PH
163342. Allow both -bf and -bF in the same test run.
1634
d6453af2
PH
163543. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1636
f7b63901
PH
163744. The "Exiscan patch" is now merged into the mainline Exim source.
1638
163945. Sometimes the final signoff response after QUIT could fail to get
1640 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1641 < 0 before doing a fflush(). This bug looks as though it goes back to the
1642 introduction of TLS in release 3.20, but "sometimes" must have been rare
1643 because the tests only now provoked it.
1644
a444213a
PH
164546. Reset the locale to "C" after calling embedded Perl, in case it was changed
1646 (this can affect the format of dates).
1647
0ec020ea
PH
164847. exim_tidydb, when checking for the continued existence of a message for
1649 which it has found a message-specific retry record, was not finding
1650 messages that were in split spool directories. Consequently, it was
1651 deleting retry records that should have stayed in existence.
1652
b1206957
PH
165348. Steve fixed some bugs in eximstats.
1654
165549. The SPA authentication driver was not abandoning authentication and moving
1656 on to the next authenticator when an expansion was forced to fail,
1657 contradicting the general specification for all authenticators. Instead it
1658 was generating a temporary error. It now behaves as specified.
1659
26dd5a95
PH
166050. The default ordering of permitted cipher suites for GnuTLS was pessimal
1661 (the order specifies the preference for clients). The order is now AES256,
1662 AES128, 3DES, ARCFOUR128.
1663
343b2385
PH
166451. Small patch to Sieve code - explicitly set From: when generating an
1665 autoreply.
1666
1c5466b9
PH
166752. Exim crashed if a remote delivery caused a very long error message to be
1668 recorded - for instance if somebody sent an entire SpamAssassin report back
1669 as a large number of 550 error lines. This bug was coincidentally fixed by
1670 increasing the size of one of Exim's internal buffers (big_buffer) that
1671 happened as part of the Exiscan merge. However, to be on the safe side, I
1672 have made the code more robust (and fixed the comments that describe what
1673 is going on).
1674
55ee9ee3
PH
167553. Now that there can be additional text after "Completed" in log lines (if
1676 the queue_time_overall log selector is set), a one-byte patch to exigrep
1677 was needed to allow it to recognize "Completed" as not the last thing in
1678 the line.
1679
d38f8232
PH
168054. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1681 patch that reportedly fixes this has been added. I am not expert enough to
1682 create a test for it. This is what the patch creator wrote:
1683
1684 "I found a little strange behaviour of ldap code when working with
1685 Windows 2003 AD Domain, where users was placed in more than one
1686 Organization Units. When I tried to give exim partial DN, the exit code
1687 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1688 But simultaneously result of request was absolutely normal ldap result,
1689 so I produce this patch..."
1690
3295e65b
PH
1691 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1692 REFERENCE, so I have modified the code to exclude the patch when that macro
1693 is not defined.
1694
7102e136
PH
169555. Some experimental protocols are using DNS PTR records for new purposes. The
1696 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1697 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1698 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1699 CAN-2005-0021
7102e136 1700
3ca0ba97
PH
170156. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1702
c2bcbe20
PH
170357. Double the size of the debug message buffer (to 2048) so that more of very
1704 long debug lines gets shown.
1705
18ce445d
PH
170658. The exicyclog utility now does better if the number of log files to keep
1707 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
1708
1f5b4c3d
PH
170959. Two changes related to the smtp_active_hostname option:
1710
1711 (1) $smtp_active_hostname is now available as a variable.
1712 (2) The default for smtp_banner uses $smtp_active_hostname instead
1713 of $primary_hostname.
1714
b975ba52
PH
171560. The host_aton() function is supposed to be passed a string that is known
1716 to be a valid IP address. However, in the case of IPv6 addresses, it was
1717 not checking this. This is a hostage to fortune. Exim now panics and dies
1718 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
1719 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1720 components; fortuitously, this particular loophole had already been fixed
1721 by change 4.50/55 above.
1722
1723 If there are any other similar loopholes, the new check in host_aton()
1724 itself should stop them being exploited. The report I received stated that
1725 data on the command line could provoke the exploit when Exim was running as
1726 exim, but did not say which command line option was involved. All I could
1727 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1728 running as the user.
ea3a6f44 1729 CAN-2005-0021
85b87bc2
PH
1730
173161. There was a buffer overflow vulnerability in the SPA authentication code
1732 (which came originally from the Samba project). I have added a test to the
1733 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 1734 CAN-2005-0022
b975ba52 1735
17ffcae7
PH
173662. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
1737 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
1738
d95f9fdb
PH
173963. The daemon start-up calls getloadavg() while still root for those OS that
1740 need the first call to be done as root, but it missed one case: when
1741 deliver_queue_load_max is set with deliver_drop_privilege. This is
1742 necessary for the benefit of the queue runner, because there is no re-exec
1743 when deliver_drop_privilege is set.
1744
86b8287f
PH
174564. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
1746 This has been fixed.
1747
60dc5e56
PH
174865. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1749 was in use, was not putting the data itself into the right store pool;
1750 consequently, it could be overwritten for a subsequent message in the same
1751 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1752 the caching.)
1753
533244af
PH
175466. Added hosts_max_try_hardlimit to the smtp transport, default 50.
1755
a5a28604
PH
175667. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
1757 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
1758 the function were treating the return as a boolean value, which happened to
1759 work because 0=false and not-0=true, but is not correct code.
1760
7e634d24
PH
176168. The host_aton() function was not handling scoped IPv6 addresses (those
1762 with, for example, "%eth0" on the end) correctly.
1763
3e11c26b
PH
176469. Fixed some compiler warnings in acl.c for the bitmaps specified with
1765 negated items (that is, ~something) in unsigned ints. Some compilers
1766 apparently mutter when there is no cast.
1767
6729cf78
PH
176870. If an address verification called from an ACL failed, and did not produce a
1769 user-specific message (i.e. there was only a "system" message), nothing was
1770 put in $acl_verify_message. In this situation, it now puts the system
1771 message there.
1772
00f00ca5
PH
177371. Change 4.23/11 added synchronization checking at the start of an SMTP
1774 session; change 4.31/43 added the unwanted input to the log line - except
1775 that it did not do this in the start of session case. It now does.
1776
c9bdd01c
PH
177772. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
1778 This is wrong and can cause the other end to generate a synchronization
1779 error if it is another Exim or anything else that does the synchronization
1780 check. A QUIT command is no longer sent after a timeout.
1781
d43194df
PH
178273. $host_lookup_deferred has been added, to make it easier to detect DEFERs
1783 during host lookups.
1784
fe5b5d0b
PH
178574. The defer_ok option of callout verification was not working if it was used
1786 when verifying addresses in header lines, that is, for this case:
1787
1788 verify = header_sender/callout=defer_ok
1789
76a2d7ba
PH
179075. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
1791 those file descriptors could be used for SMTP connections. If anything
1792 wrote to stderr (the example that came up was "warn" in embedded Perl), it
1793 could be sent to the SMTP client, causing chaos. The daemon now opens
1794 stdin, stdout, and stderr to /dev/null when it puts itself into the
1795 background.
1796
179776. Arrange for output from Perl's "warn" command to be written to Exim's main
1798 log by default. The user can override this with suitable Perl magic.
1799
04f7d5b9
PH
180077. The use of log_message on a "discard" ACL verb, which is supposed to add to
1801 the log message when discard triggers, was not working for the DATA ACL or
1802 for the non-SMTP ACL.
1803
bc60667e
PH
180478. Error message wording change in sieve.c.
1805
bb6e88ff
PH
180679. If smtp_accept_max_per_host was set, the number of connections could be
1807 restricted to fewer than expected, because the daemon was trying to set up
1808 a new connection before checking whether the processes handling previous
1809 connections had finished. The check for completed processes is now done
1810 earlier. On busy systems, this bug wouldn't be noticed because something
1811 else would have woken the daemon, and it would have reaped the completed
1812 process earlier.
1813
1e70f85b
PH
181480. If a message was submitted locally by a user whose login name contained one
1815 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
1816 It caused a spool format error. I have fixed the spool reading code. A
1817 related problem was that the "from" clause in the Received: line became
1818 illegal because of the space(s). It is now covered by ${quote_local_part.
1819
182081. Included the latest eximstats from Steve (adds average sizes to HTML Top
1821 tables).
1822
4e01f9d6
PH
182382. Updated OS/Makefile-AIX as per message from Mike Meredith.
1824
1ee1cef2
PH
182583. Patch from Sieve maintainer to fix unterminated string problem in
1826 "vacation" handling.
1827
6e2b4ccc
PH
182884. Some minor changes to the Linux configuration files to help with other
1829 OS variants using glibc.
1830
8e669ac1
PH
183185. One more patch for Sieve to update vacation handling to latest spec.
1832
495ae4b0 1833
bbe902f0
PH
1834----------------------------------------------------
1835See the note above about the 4.44 and 4.50 releases.
1836----------------------------------------------------
1837
1838
1839Exim version 4.44
1840-----------------
1841
1842 1. Change 4.43/35 introduced a bug that caused file counts to be
1843 incorrectly computed when quota_filecount was set in an appendfile
1844 transport
1845
1846 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1847 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1848 place.
1849
1850 3. Give more explanation in the error message when the command for a transport
1851 filter fails to execute.
1852
1853 4. There are several places where Exim runs a non-Exim command in a
1854 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1855 was being done only for the command run by the queryprogram router. It is
1856 now done for all such subprocesses. The other cases are: ${run, transport
1857 filters, and the commands run by the lmtp and pipe transports.
1858
1859 5. Some older OS have a limit of 256 on the maximum number of file
1860 descriptors. Exim was using setrlimit() to set 1000 as a large value
1861 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1862 systems. I've change it so that if it can't get 1000, it tries for 256.
1863
1864 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1865 was an oversight, and furthermore, ever since the addition of extra
1866 controls (e.g. 4.43/32), the checks on when to allow different forms of
1867 "control" were broken. There should now be diagnostics for all cases when a
1868 control that does not make sense is encountered.
1869
1870 7. $recipients is now available in the predata ACL (oversight).
1871
1872 8. Tidy the search cache before the fork to do a delivery from a message
1873 received from the command line. Otherwise the child will trigger a lookup
1874 failure and thereby defer the delivery if it tries to use (for example) a
1875 cached ldap connection that the parent has called unbind on.
1876
1877 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1878 of $address_data from the recipient verification was clobbered by the
1879 sender verification.
1880
188110. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1882 was its contents. (It was OK if the option was not defined at all.)
1883
188411. A "Completed" log line is now written for messages that are removed from
1885 the spool by the -Mrm option.
1886
188712. $host_address is now set to the target address during the checking of
1888 ignore_target_hosts.
1889
189013. When checking ignore_target_hosts for an ipliteral router, no host name was
1891 being passed; this would have caused $sender_host_name to have been used if
1892 matching the list had actually called for a host name (not very likely,
1893 since this list is usually IP addresses). A host name is now passed as
1894 "[x.x.x.x]".
1895
189614. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1897 code that specifies a non-restarting handler (typically sigaction() in
1898 modern systems) in an attempt to fix a rare and obscure crash bug.
1899
190015. Narrowed the window for a race in the daemon that could cause it to ignore
1901 SIGCHLD signals. This is not a major problem, because they are used only to
1902 wake it up if nothing else does.
1903
190416. A malformed maildirsize file could cause Exim to calculate negative values
1905 for the mailbox size or file count. Odd effects could occur as a result.
1906 The maildirsize information is now recalculated if the size or filecount
1907 end up negative.
1908
190917. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1910 support for a long time. Removed HAVE_SYS_VFS_H.
1911
ea3a6f44 191218. Updated exipick to current release from John Jetmore.
bbe902f0
PH
1913
191419. Allow an empty sender to be matched against a lookup in an address list.
1915 Previously the only cases considered were a regular expression, or an
1916 empty pattern.
1917
191820. Exim went into a mad DNS lookup loop when doing a callout where the
1919 host was specified on the transport, if the DNS lookup yielded more than
1920 one IP address.
1921
ea3a6f44
NM
192221. The RFC2047 encoding function was originally intended for short strings
1923 such as real names; it was not keeping to the 75-character limit for
1924 encoded words that the RFC imposes. It now respects the limit, and
1925 generates multiple encoded words if necessary. To be on the safe side, I
1926 have increased the buffer size for the ${rfc2047: expansion operator from
1927 1024 to 2048 bytes.
bbe902f0 1928
ea3a6f44
NM
192922. Failure to deliver a bounce message always caused it to be frozen, even if
1930 there was an errors_to setting on the router. The errors_to setting is now
1931 respected.
bbe902f0
PH
1932
193323. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1934 canonical form (fully expanded) before being placed in
1935 $sender_host_address.
1936
193724. Updated eximstats to version 1.33
1938
ea3a6f44
NM
193925. Include certificate and key file names in error message when GnuTLS fails
1940 to set them up, because the GnuTLS error message doesn't include the name
1941 of the failing file when there is a problem reading it.
bbe902f0
PH
1942
194326. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 1944 As per change 25.
bbe902f0 1945
ea3a6f44
NM
194627. Reset the locale to "C" after calling embedded Perl, in case it was changed
1947 (this can affect the format of dates).
bbe902f0 1948
ea3a6f44
NM
194928. exim_tidydb, when checking for the continued existence of a message for
1950 which it has found a message-specific retry record, was not finding
1951 messages that were in split spool directories. Consequently, it was
1952 deleting retry records that should have stayed in existence.
bbe902f0
PH
1953
195429. eximstats updated to version 1.35
1955 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
1956 1.35 - bugfix such that pie charts by volume are generated correctly
1957
ea3a6f44
NM
195830. The SPA authentication driver was not abandoning authentication and moving
1959 on to the next authenticator when an expansion was forced to fail,
1960 contradicting the general specification for all authenticators. Instead it
1961 was generating a temporary error. It now behaves as specified.
bbe902f0 1962
ea3a6f44
NM
196331. The default ordering of permitted cipher suites for GnuTLS was pessimal
1964 (the order specifies the preference for clients). The order is now AES256,
1965 AES128, 3DES, ARCFOUR128.
bbe902f0 1966
ea3a6f44
NM
196731. Small patch to Sieve code - explicitly set From: when generating an
1968 autoreply.
bbe902f0 1969
ea3a6f44
NM
197032. Exim crashed if a remote delivery caused a very long error message to be
1971 recorded - for instance if somebody sent an entire SpamAssassin report back
1972 as a large number of 550 error lines. This bug was coincidentally fixed by
1973 increasing the size of one of Exim's internal buffers (big_buffer) that
1974 happened as part of the Exiscan merge. However, to be on the safe side, I
1975 have made the code more robust (and fixed the comments that describe what
1976 is going on).
bbe902f0 1977
ea3a6f44
NM
197833. Some experimental protocols are using DNS PTR records for new purposes. The
1979 keys for these records are domain names, not reversed IP addresses. The
1980 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1981 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
1982 CAN-2005-0021
1983
ea3a6f44
NM
198434. The host_aton() function is supposed to be passed a string that is known
1985 to be a valid IP address. However, in the case of IPv6 addresses, it was
1986 not checking this. This is a hostage to fortune. Exim now panics and dies
1987 if the condition is not met. A case was found where this could be provoked
1988 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1989 components; fortuitously, this particular loophole had already been fixed
1990 by change 4.50/55 or 4.44/33 above.
1991
1992 If there are any other similar loopholes, the new check in host_aton()
1993 itself should stop them being exploited. The report I received stated that
1994 data on the command line could provoke the exploit when Exim was running as
1995 exim, but did not say which command line option was involved. All I could
1996 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1997 running as the user.
bbe902f0
PH
1998 CAN-2005-0021
1999
ea3a6f44
NM
200035. There was a buffer overflow vulnerability in the SPA authentication code
2001 (which came originally from the Samba project). I have added a test to the
2002 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2003 CAN-2005-0022
2004
ea3a6f44
NM
200536. The daemon start-up calls getloadavg() while still root for those OS that
2006 need the first call to be done as root, but it missed one case: when
2007 deliver_queue_load_max is set with deliver_drop_privilege. This is
2008 necessary for the benefit of the queue runner, because there is no re-exec
2009 when deliver_drop_privilege is set.
bbe902f0 2010
ea3a6f44
NM
201137. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2012 was in use, was not putting the data itself into the right store pool;
2013 consequently, it could be overwritten for a subsequent message in the same
2014 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2015 the caching.)
bbe902f0 2016
ea3a6f44
NM
201738. Sometimes the final signoff response after QUIT could fail to get
2018 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2019 < 0 before doing a fflush(). This bug looks as though it goes back to the
2020 introduction of TLS in release 3.20, but "sometimes" must have been rare
2021 because the tests only now provoked it.
bbe902f0
PH
2022
2023
495ae4b0
PH
2024Exim version 4.43
2025-----------------
2026
2027 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2028 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2029 Now it returns an integer. A number of calls were still expecting a T/F
2030 return. Fortuitously, in all cases, the tests worked in OK situations,
2031 which is the norm. However, things would have gone wrong on any write
2032 failures on the smtp file descriptor. This function is used when sending
2033 messages over SMTP and also when doing verify callouts.
2034
2035 2. When Exim is called to do synchronous delivery of a locally submitted
2036 message (the -odf or -odi options), it no longer closes stderr before doing
2037 the delivery.
2038
2039 3. Implemented the mua_wrapper option.
2040
2041 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2042
2043 5. Implemented the functions header_remove(), header_testname(),
2044 header_add_at_position(), and receive_remove_recipient(), and exported them
2045 to local_scan().
2046
2047 6. If an ACL "warn" statement specified the addition of headers, Exim already
2048 inserted X-ACL-Warn: at the start if there was no header name. However, it
2049 was not making this test for the second and subsequent header lines if
2050 there were newlines in the string. This meant that an invalid header could
2051 be inserted if Exim was badly configured.
2052
2053 7. Allow an ACL "warn" statement to add header lines at the start or after all
2054 the Received: headers, as well as at the end.
2055
2056 8. Added the rcpt_4xx retry error code.
2057
2058 9. Added postmaster_mailfrom=xxx to callout verification option.
2059
206010. Added mailfrom=xxxx to the callout verification option, for verify=
2061 header_sender only.
2062
206311. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2064 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2065
206612. Inserted some casts to stop certain compilers warning when using pointer
2067 differences as field lengths or precisions in printf-type calls (mostly
2068 affecting debugging statements).
2069
207013. Added optional readline() support for -be (dynamically loaded).
2071
207214. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2073 same clock tick as a message's arrival, so that its received time was the
2074 same as the "first fail" time on the retry record, and that message
2075 remained on the queue past the ultimate address timeout, every queue runner
2076 would try a delivery (because it was past the ultimate address timeout) but
2077 after another failure, the ultimate address timeout, which should have then
2078 bounced the address, did not kick in. This was a "< instead of <=" error;
2079 in most cases the first failure would have been in the next clock tick
2080 after the received time, and all would be well.
2081
208215. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2083 being recognized when the domain list was tested by the match_domain
2084 condition in an expansion string.
2085
208616. Added the ${str2b64: operator.
2087
208817. Exim was always calling setrlimit() to set a large limit for the number of
2089 processes, without checking whether the existing limit was already
2090 adequate. (It did check for the limit on file descriptors.) Furthermore,
2091 errors from getrlimit() and setrlimit() were being ignored. Now they are
2092 logged to the main and panic logs, but Exim does carry on, to try to do its
2093 job under whatever limits there are.
2094
209518. Imported PCRE 5.0.
2096
209719. Trivial typo in log message " temporarily refused connection" (the leading
2098 space).
2099
210020. If the log selector return_path_on_delivery was set and an address was
2101 redirected to /dev/null, the delivery process crashed because it assumed
2102 that a return path would always be set for a "successful" delivery. In this
2103 case, the whole delivery is bypassed as an optimization, and therefore no
2104 return path is set.
2105
210621. Internal re-arrangement: the function for sending a challenge and reading
2107 a response while authentication was assuming a zero-terminated challenge
2108 string. It's now changed to take a pointer and a length, to allow for
2109 binary data in such strings.
2110
211122. Added the cyrus_sasl authenticator (code supplied by MBM).
2112
211323. Exim was not respecting finduser_retries when seeking the login of the
2114 uid under which it was called; it was always trying 10 times. (The default
2115 setting of finduser_retries is zero.) Also, it was sleeping after the final
2116 failure, which is pointless.
2117
211824. Implemented tls_on_connect_ports.
2119
212025. Implemented acl_smtp_predata.
2121
212226. If the domain in control=submission is set empty, Exim assumes that the
2123 authenticated id is a complete email address when it generates From: or
2124 Sender: header lines.
2125
212627. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2127 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2128 chown and chgrp in /bin and hostname in /usr/bin.
2129
213028. Exim was keeping the "process log" file open after each use, just as it
2131 does for the main log. This opens the possibility of it remaining open for
2132 long periods when the USR1 signal hits a daemon. Occasional processlog
2133 errors were reported, that could have been caused by this. Anyway, it seems
2134 much more sensible not to leave this file open at all, so that is what now
2135 happens.
2136
213729. The long-running daemon process does not normally write to the log once it
2138 has entered its main loop, and it closes the log before doing so. This is
2139 so that log files can straightforwardly be renamed and moved. However,
2140 there are a couple of unusual error situations where the daemon does write
2141 log entries, and I had neglected to close the log afterwards.
2142
214330. The text of an SMTP error response that was received during a remote
2144 delivery was being truncated at 512 bytes. This is too short for some of
2145 the long messages that one sometimes sees. I've increased the limit to
2146 1024.
2147
214831. It is now possible to make retry rules that apply only when a message has a
2149 specific sender, in particular, an empty sender.
2150
215132. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2152 it possible to be selective about when SMTP synchronization is enforced.
2153
215433. Added "control = caseful_local_part" and "control = "caselower_local_part".
2155
215632. Implemented hosts_connection_nolog.
2157
215833. Added an ACL for QUIT.
2159
216034. Setting "delay_warning=" to disable warnings was not working; it gave a
2161 syntax error.
2162
216335. Added mailbox_size and mailbox_filecount to appendfile.
2164
216536. Added control = no_multiline_responses to ACLs.
2166
216737. There was a bug in the logic of the code that waits for the clock to tick
2168 in the case where the clock went backwards by a substantial amount such
2169 that the microsecond fraction of "now" was more than the microsecond
2170 fraction of "then" (but the whole seconds number was less).
2171
217238. Added support for the libradius Radius client library this is found on
2173 FreeBSD (previously only the radiusclient library was supported).
2174
2175
2176Exim version 4.42
2177-----------------
2178
2179 1. When certain lookups returned multiple values in the form name=value, the
2180 quoting of the values was not always being done properly. Specifically:
2181 (a) If the value started with a double quote, but contained no whitespace,
2182 it was not quoted.
2183 (b) If the value contained whitespace other than a space character (i.e.
2184 tabs or newlines or carriage returns) it was not quoted.
2185 This fix has been applied to the mysql and pgsql lookups by writing a
2186 separate quoting function and calling it from the lookup code. The fix
2187 should probably also be applied to nisplus, ibase and oracle lookups, but
2188 since I cannot test any of those, I have not disturbed their existing code.
2189
2190 2. A hit in the callout cache for a specific address caused a log line with no
2191 reason for rejecting RCPT. Now it says "Previous (cached) callout
2192 verification failure".
2193
2194 3. There was an off-by-one bug in the queryprogram router. An over-long
2195 return line was truncated at 256 instead of 255 characters, thereby
2196 overflowing its buffer with the terminating zero. As well as fixing this, I
2197 have increased the buffer size to 1024 (and made a note to document this).
2198
2199 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2200 when Exim is waiting for an SMTP response from a remote server, Exim
2201 restarts its select() call on the socket, thereby resetting its timeout.
2202 This is not a problem when such interrupts are rare. Somebody set up a cron
2203 job to run exiwhat every 2 minutes, which is less than the normal select()
2204 timeout (5 or 10 minutes). This meant that the select() timeout never
2205 kicked in because it was always reset. I have fixed this by comparing the
2206 time when an interrupt arrives with the time at the start of the first call
2207 to select(). If more time than the timeout has elapsed, the interrupt is
2208 treated as a timeout.
2209
2210 5. Some internal re-factoring in preparation for the addition of Sieve
2211 extensions (by MH). In particular, the "personal" test is moved to a
2212 separate function, and given an option for scanning Cc: and Bcc: (which is
2213 not set for Exim filters).
2214
2215 6. When Exim created an email address using the login of the caller as the
2216 local part (e.g. when creating a From: or Sender: header line), it was not
2217 quoting the local part when it contained special characters such as @.
2218
2219 7. Installed new OpenBSD configuration files.
2220
2221 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2222 try to make them clearer.
2223
2224 9. Callout options, other than the timeout value, were being ignored when
2225 verifying sender addresses in header lines. For example, when using
2226
2227 verify = header_sender/callout=no_cache
2228
2229 the cache was (incorrectly) being used.
2230
223110. Added a missing instance of ${EXE} to the exim_install script; this affects
2232 only the Cygwin environment.
2233
223411. When return_path_on_delivery was set as a log selector, if different remote
2235 addresses in the same message used different return paths and parallel
2236 remote delivery occurred, the wrong values would sometimes be logged.
2237 (Whenever a remote delivery process finished, the return path value from
2238 the most recently started remote delivery process was logged.)
2239
224012. RFC 3848 specifies standard names for the "with" phrase in Received: header
2241 lines when AUTH and/or TLS are in use. This is the "received protocol"
2242 field. Exim used to use "asmtp" for authenticated SMTP, without any
2243 indication (in the protocol name) for TLS use. Now it follows the RFC and
2244 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2245 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2246 names appear in log lines as well as in Received: header lines.
2247
224813. Installed MH's patches for Sieve to add the "copy" and "vacation"
2249 extensions, and comparison tests, and to fix some bugs.
2250
225114. Changes to the "personal" filter test:
2252
2253 (1) The test was buggy in that it was just doing the equivalent of
2254 "contains" tests on header lines. For example, if a user's address was
2255 anne@some.where, the "personal" test would incorrectly be true for
2256
2257 To: susanne@some.where
2258
2259 This test is now done by extracting each address from the header in turn,
2260 and checking the entire address. Other tests that are part of "personal"
2261 are now done using regular expressions (for example, to check local parts
2262 of addresses in From: header lines).
2263
2264 (2) The list of non-personal local parts in From: addresses has been
2265 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2266 taken from the Sieve specification recommendations.
2267
2268 (3) If the message contains any header line starting with "List-" it is
2269 treated as non-personal.
2270
2271 (4) The test for "circular" in the Subject: header line has been removed
2272 because it now seems ill-conceived.
2273
227415. Minor typos in src/EDITME comments corrected.
2275
227616. Installed latest exipick from John Jetmore.
2277
227817. If headers_add on a router specified a text string that was too long for
2279 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2280 of string_sprintf() is now avoided.
2281
228218. $message_body_size was not set (it was always zero) when running the DATA
2283 ACL and the local_scan() function.
2284
228519. For the "mail" command in an Exim filter, no default was being set for
2286 the once_repeat time, causing a random time value to be used if "once" was
2287 specified. (If the value happened to be <= 0, no repeat happened.) The
2288 default is now 0s, meaning "never repeat". The "vacation" command was OK
2289 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2290 (I found it when inspecting the code).
2291
229220. There is now an overall timeout for performing a callout verification. It
2293 defaults to 4 times the callout timeout, which applies to individual SMTP
2294 commands during the callout. The overall timeout applies when there is more
2295 than one host that can be tried. The timeout is checked before trying the
2296 next host. This prevents very long delays if there are a large number of
2297 hosts and all are timing out (e.g. when the network connections are timing
2298 out). The value of the overall timeout can be changed by specifying an
2299 additional sub-option for "callout", called "maxwait". For example:
2300
2301 verify = sender/callout=5s,maxwait=20s
2302
230321. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2304 to the end before writing, but this should make it even safer).
2305
230622. Exim was forgetting that it had advertised PIPELINING for the second and
2307 subsequent messages on an SMTP connection. It was also not resetting its
2308 memory on STARTTLS and an internal HELO.
2309
231023. When Exim logs an SMTP synchronization error within a session, it now
2311 records whether PIPELINING has been advertised or not.
2312
231324. Added 3 instances of "(long int)" casts to time_t variables that were being
2314 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2315 rather than long int.
2316
231725. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2318
231926. Added the never_mail option to autoreply.
2320
2321
2322Exim version 4.41
2323-----------------
2324
2325 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2326 crash if the getsockname() call failed; this can happen if a connection is
2327 closed very soon after it is established. The problem was simply in the
2328 order in which certain operations were done, causing Exim to try to write
2329 to the SMTP stream before it had set up the file descriptor. The bug has
2330 been fixed by making things happen in the correct order.
2331
2332
2333Exim version 4.40
2334-----------------
2335
2336 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2337 before the connection was closed, thus losing the rejection response.
2338
2339 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2340 some early Solaris releases, but causes trouble in current releases where
2341 socklen_t is defined.
2342
2343 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2344 always exist.
2345
2346 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2347 configured.
2348
2349 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2350 that releasing the top of it at the end releases what was used for sub-
2351 expansions (unless the block got too big). However, discard this block if
2352 the first thing is a variable or header, so that we can use its block when
2353 it is dynamic (useful for very large $message_headers, for example).
2354
2355 6. Lookups now cache *every* query, not just the most recent. A new, separate
2356 store pool is used for this. It can be recovered when all lookup caches are
2357 flushed. Lookups now release memory at the end of their result strings.
2358 This has involved some general refactoring of the lookup sources.
2359
2360 7. Some code has been added to the store_xxx() functions to reduce the amount
2361 of flapping under certain conditions.
2362
2363 8. log_incoming_interface used to affect only the <= reception log lines. Now
2364 it causes the local interface and port to be added to several more SMTP log
2365 lines, for example "SMTP connection from", and rejection lines.
2366
2367 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2368
236910. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2370
237111. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2372 could be overwritten at the end of the current message (or the start of a
2373 new message if it was set in a HELO ACL). The value is now preserved for
2374 the duration of the SMTP connection.
2375
237612. If a transport had a headers_rewrite setting, and a matching header line
2377 contained an unqualified address, that address was qualified, even if it
2378 did not match any rewriting rules. The underlying bug was that the values
2379 of the flags that permit the existence of unqualified sender and recipient
2380 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2381 non-local messages, and by -bnq for local messages) were not being
2382 preserved with the message after it was received.
2383
238413. When Exim was logging an SMTP synchronization error, it could sometimes log
2385 "next input=" as part of the text comprising the host identity instead of
2386 the correct text. The code was using the same buffer for two different
2387 strings. However, depending on which order the printing function evaluated
2388 its arguments, the bug did not always show up. Under Linux, for example, my
2389 test suite worked just fine.
2390
239114. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2392 doesn't work with some older versions of Perl. It has been changed to "my",
2393 which in any case is probably the better facility to use.
2394
239515. A really picky compiler found some instances of statements for creating
2396 error messages that either had too many or two few arguments for the format
2397 string.
2398
239916. The size of the buffer for calls to the DNS resolver has been increased
2400 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2401 for addresses that have a lot of PTR records. This alleviates a problem; it
2402 does not fully solve it.
2403
240417. A dnsdb lookup for PTR records that receives more data than will fit in the
2405 buffer now truncates the list and logs the incident, which is the same
2406 action as happens when Exim is looking up a host name and its aliases.
2407 Previously in this situation something unpredictable would happen;
2408 sometimes it was "internal error: store_reset failed".
2409
241018. If a server dropped the connection unexpectedly when an Exim client was
2411 using GnuTLS and trying to read a response, the client delivery process
2412 crashed while trying to generate an error log message.
2413
241419. If a "warn" verb in an ACL added multiple headers to a message in a single
2415 string, for example:
2416
2417 warn message = H1: something\nH2: something
2418
2419 the text was added as a single header line from Exim's point of view
2420 though it ended up OK in the delivered message. However, searching for the
2421 second and subsequent header lines using $h_h2: did not work. This has been
2422 fixed. Similarly, if a system filter added multiple headers in this way,
2423 the routers could not see them.
2424
242520. Expanded the error message when iplsearch is called with an invalid key to
2426 suggest using net-iplsearch in a host list.
2427
242821. When running tests using -bh, any delays imposed by "delay" modifiers in
2429 ACLs are no longer actually imposed (and a message to that effect is
2430 output).
2431
243222. If a "gecos" field in a passwd entry contained escaped characters, in
2433 particular, if it contained a \" sequence, Exim got it wrong when building
2434 a From: or a Sender: header from that name. A second bug also caused
2435 incorrect handling when an unquoted " was present following a character
2436 that needed quoting.
2437
243823. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2439 was not being matched caselessly.
2440
244124. Arranged for all hyphens in the exim.8 source to be escaped with
2442 backslashes.
2443
244425. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2445 properly. Recipient callout cache records were still being keyed to include
2446 the sender, even when use_sender was set false. This led to far more
2447 callouts that were necessary. The sender is no longer included in the key
2448 when use_sender is false.
2449
245026. Added "control = submission" modifier to ACLs.
2451
245227. Added the ${base62d: operator to decode base 62 numbers.
2453
245428. dnsdb lookups can now access SRV records.
2455
245629. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2457 the configuration file.
2458
245930. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2460 (-v) mode. This makes the output for a verbose queue run more intelligible.
2461
246231. Added a use_postmaster feature to recipient callouts.
2463
246432. Added the $body_zerocount variable, containing the number of binary zero
2465 bytes in the message body.
2466
246733. The time of last modification of the "new" subdirectory is now used as the
2468 "mailbox time last read" when there is a quota error for a maildir
2469 delivery.
2470
247134. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2472
247335. Added +ignore_unknown as a special item in host lists.
2474
247536. Code for decoding IPv6 addresses in host lists is now included, even if
2476 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2477 address was recognized as an IP address, but was then not correctly decoded
2478 into binary, causing unexpected and incorrect effects when compared with
2479 another IP address.
2480
2481
2482Exim version 4.34
2483-----------------
2484
2485 1. Very minor rewording of debugging text in manualroute to say "list of
2486 hosts" instead of "hostlist".
2487
2488 2. If verify=header_syntax was set, and a header line with an unqualified
2489 address (no domain) and a large number of spaces between the end of the
2490 name and the colon was received, the reception process suffered a buffer
2491 overflow, and (when I tested it) crashed. This was caused by some obsolete
2492 code that should have been removed. The fix is to remove it!
2493
2494 3. When running in the test harness, delay a bit after writing a bounce
2495 message to get a bit more predictability in the log output.
2496
2497 4. Added a call to search_tidyup() just before forking a reception process. In
2498 theory, someone could use a lookup in the expansion of smtp_accept_max_
2499 per_host which, without the tidyup, could leave open a database connection.
2500
2501 5. Added the variables $recipient_data and $sender_data which get set from a
2502 lookup success in an ACL "recipients" or "senders" condition, or a router
2503 "senders" option, similar to $domain_data and $local_part_data.
2504
2505 6. Moved the writing of debug_print from before to after the "senders" test
2506 for routers.
2507
2508 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2509 problems for message scanning, either using a data ACL, or using
2510 local_scan() because the Received: header was not generated till after they
2511 were called (in order to set the time as the time of reception completion).
2512 I have revised the way this works. The header is now generated after the
2513 body is received, but before the ACL or local_scan() are called. After they
2514 are run, the timestamp in the header is updated.
2515
2516
2517Exim version 4.33
2518-----------------
2519
2520 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2521 before starting a queue runner without re-exec. This happened only when
2522 deliver_drop_privilege was set or when the Exim user was set to root. The
2523 effect of the bug was that timeouts during subsequent deliveries caused
2524 crashes instead of being properly handled. The handler is now left at its
2525 default (and expected) setting.
2526
2527 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2528 message, again when deliver_drop_privilege is set or Exim is run as root.
2529 The bug described in (1) was not present in this case, but the tidying up
2530 of the other signals was missing. I have made the two cases consistent.
2531
2532 3. The ignore_target_hosts setting on a manualroute router was being ignored
2533 for hosts that were looked up using the /MX notation.
2534
2535 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2536 in domain lists.
2537
2538 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2539 operated on the sender address. After changing the $sender_address to <>
2540 for the sender address verify, Exim was re-instated it as the original
2541 (before rewriting) address, but remembering that it had rewritten it, so it
2542 wasn't rewriting it again. This bug also had the effect of breaking the
2543 sender address verification caching when the sender address was rewritten.
2544
2545 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2546 This has been changed so that if the ip literal address matches
2547 ignore_target_hosts, the router declines.
2548
2549 7. Added expansion conditions match_domain, match_address, and match_local_
2550 part (NOT match_host).
2551
2552 8. The placeholder for the Received: header didn't have a length field set.
2553
2554 9. Added code to Exim itself and to exim_lock to test for a specific race
2555 condition that could lead to file corruption when using MBX delivery. The
2556 issue is with the lockfile that is created in /tmp. If this file is removed
2557 after a process has opened it but before that process has acquired a lock,
2558 there is the potential for a second process to recreate the file and also
2559 acquire a lock. This could lead to two Exim processes writing to the file
2560 at the same time. The added code performs the same test as UW imapd; it
2561 checks after acquiring the lock that its file descriptor still refers to
2562 the same named file.
2563
256410. The buffer for building added header lines was of fixed size, 8192 bytes.
2565 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2566 when Exim is built.
2567
256811. Added the smtp_active_hostname option. If used, this will typically be made
2569 to depend on the incoming interface address. Because $interface_address is
2570 not set up until the daemon has forked a reception process, error responses
2571 that can happen earlier (such as "too many connections") no longer contain
2572 a host name.
2573
257412. If an expansion in a condition on a "warn" statement fails because a lookup
2575 defers, the "warn" statement is abandoned, and the next ACL statement is
2576 processed. Previously this caused the whole ACL to be aborted.
2577
257813. Added the iplsearch lookup type.
2579
258014. Added ident_timeout as a log selector.
2581
258215. Added tls_certificate_verified as a log selector.
2583
258416. Added a global option tls_require_ciphers (compare the smtp transport
2585 option of the same name). This controls incoming TLS connections.
2586
258717. I finally figured out how to make tls_require_ciphers do a similar thing
2588 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2589 before starting the TLS session.
2590
259118. Tabs are now shown as \t in -bP output.
2592
259319. If the log selector return_path_on_delivery was set, Exim crashed when
2594 bouncing a message because it had too many Received: header lines.
2595
259620. If two routers both had headers_remove settings, and the first one included
2597 a superfluous trailing colon, the final name in the first list and the
2598 first name in the second list were incorrectly joined into one item (with a
2599 colon in the middle).
2600
2601
2602Exim version 4.32
2603-----------------
2604
2605 1. Added -C and -D options to the exinext utility, mainly to make it easier
2606 to include in the automated testing, but these could be helpful when
2607 multiple configurations are in use.
2608
2609 2. The exinext utility was not formatting the output nicely when there was
2610 an alternate port involved in the retry record key, nor when there was a
2611 message id as well (for retries that were specific to a specific message
2612 and a specific host). It was also confused by IPv6 addresses, because of
2613 the additional colons they contain. I have fixed the IPv4 problem, and
2614 patched it up to do a reasonable job for IPv6.
2615
2616 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2617 delivery, the log line now contains "pipelined" if PIPELINING was used.
2618
2619 4. An SMTP transport process used to panic and die if the bind() call to set
2620 an explicit outgoing interface failed. This has been changed; it is now
2621 treated in the same way as a connect() failure.
2622
2623 5. A reference to $sender_host_name in the part of a conditional expansion
2624 that was being skipped was still causing a DNS lookup. This no longer
2625 occurs.
2626
2627 6. The def: expansion condition was not recognizing references to header lines
2628 that used bh_ and bheader_.
2629
2630 7. Added the _cache feature to named lists.
2631
2632 8. The code for checking quota_filecount in the appendfile transport was
2633 allowing one more file than it should have been.
2634
2635 9. For compatibility with Sendmail, the command line option
2636
2637 -prval:sval
2638
2639 is equivalent to
2640
2641 -oMr rval -oMs sval
2642
2643 and sets the incoming protocol and host name (for trusted callers). The
2644 host name and its colon can be omitted when only the protocol is to be set.
2645 Note the Exim already has two private options, -pd and -ps, that refer to
2646 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2647 "s", but I don't think that's a major issue.
2648
264910. A number of refactoring changes to the code, none of which should affect
2650 Exim's behaviour:
2651
2652 (a) The number of logging options was getting close to filling up the
2653 32-bit word that was used as a bit map. I have split them into two classes:
2654 those that are passed in the argument to log_write(), and those that are
2655 only ever tested independently outside of that function. These are now in
2656 separate 32-bit words, so there is plenty of room for expansion again.
2657 There is no change in the user interface or the logging behaviour.
2658
2659 (b) When building, for example, log lines, the code previously used a
2660 macro that called string_cat() twice, in order to add two strings. This is
2661 not really sufficiently general. Furthermore, there was one instance where
2662 it was actually wrong because one of the argument was used twice, and in
2663 one call a function was used. (As it happened, calling the function twice
2664 did not affect the overall behaviour.) The macro has been replaced by a
2665 function that can join an arbitrary number of extra strings onto a growing
2666 string.
2667
2668 (c) The code for expansion conditions now uses a table and a binary chop
2669 instead of a serial search (which was left over from when there were very
2670 few conditions). Also, it now recognizes conditions like "pam" even when
2671 the relevant support is not compiled in: a suitably worded error message is
2672 given if an attempt is made to use such a condition.
2673
267411. Added ${time_interval:xxxxx}.
2675
267612. A bug was causing one of the ddress fields not to be passed back correctly
2677 from remote delivery subprocesses. The field in question was not being
2678 subsequently used, so this caused to problems in practice.
2679
268013. Added new log selectors queue_time and deliver_time.
2681
268214. Might have fixed a bug in maildirsizefile handling that threw up
2683 "unexpected character" debug warnings, and recalculated the data
2684 unnecessarily. In any case, I expanded the warning message to give more
2685 information.
2686
268715. Added the message "Restricted characters in address" to the statements in
2688 the default ACL that block characters like @ and % in local parts.
2689
269016. Change 71 for release 4.31 proved to be much less benign that I imagined.
2691 Three changes have been made:
2692
2693 (a) There was a serious bug; a negative response to MAIL caused the whole
2694 recipient domain to be cached as invalid, thereby blocking all messages
2695 to all local parts at the same domain, from all senders. This bug has
2696 been fixed. The domain is no longer cached after a negative response to
2697 MAIL if the sender used is not empty.
2698
2699 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2700 been restored.
2701
2702 (c) A new callout option, "use_sender" has been added for people who want
2703 the modified behaviour.
2704
2705
2706Exim version 4.31
2707-----------------
2708
2709 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
2710 Larry Rosenman.
2711
2712 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
2713 indeed breaks things for older releases.
2714
2715 3. Added additional logging to the case where there is a problem reading data
2716 from a filter that is running in a subprocess using a pipe, in order to
2717 try to track down a specific problem.
2718
2719 4. Testing facility fudge: when running in the test harness and attempting
2720 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
2721 getting "No route to host". Convert this to a timeout.
2722
2723 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
2724 warning.
2725
2726 6. Some OS don't have socklen_t but use size_t instead. This affects the
2727 fifth argument of getsockopt() amongst other things. This is now
2728 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
2729 can be set for individual OS. I have set it for SunOS5, OSF1, and
2730 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
2731 some earlier ones do not.
2732
2733 7. Change 4.30/15 was not doing the test caselessly.
2734
2735 8. The standard form for an IPv6 address literal was being rejected by address
2736 parsing in, for example, MAIL and RCPT commands. An example of this kind of
2737 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
2738 this, as well as the form without the "IPv6" on the front (but only when
2739 address literals are enabled, of course).
2740
2741 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
2742
274310. Exim crashed if a message with an empty sender address specified by -f
2744 encountered a router with an errors_to setting. This could be provoked only
2745 by a command such as
2746
2747 exim -f "" ...
2748
2749 where an empty string was supplied; "<>" did not hit this bug.
2750
275111. Installed PCRE release 4.5.
2752
275312. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
2754 remained set. It is now erased.
2755
275613. exiqgrep wasn't working on MacOS X because it didn't correctly compute
2757 times from message ids (which are base 36 rather than the normal 62).
2758
275914. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
2760 were being counted as actual protocol errors, and logged if the log
2761 selector +smtp_protocol_error was set. One cannot be perfect in this test,
2762 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
2763 and DATA following a set of rejected RCPTs do not count as protocol errors.
2764 In other words, Exim assumes they were pipelined, though this may not
2765 actually be the case. Of course, in all cases the client gets an
2766 appropriate error code.
2767
276815. If a lookup fails in an ACL condition, a message about the failure may
2769 be available; it is used if testing the ACL cannot continue, because most
2770 such messages specify what the cause of the deferral is. However, some
2771 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
2772 that caused an old message to be retained and used if a later statement
2773 caused a defer, replacing the real cause of the deferral.
2774
277516. If an IP address had so many PTR records that the DNS lookup buffer
2776 was not large enough to hold them, Exim could crash while trying to process
2777 the truncated data. It now detects and logs this case.
2778
277917. Further to 4.21/58, another change has been made: if (and only if) the
2780 first line of a message (the first header line) ends with CRLF, a bare LF
2781 in a subsequent header line has a space inserted after it, so as not to
2782 terminate the header.
2783
278418. Refactoring: tidied an ugly bit of code in appendfile that copied data
2785 unnecessarily, used atoi() instead of strtol(), and didn't check the
2786 termination when getting file sizes from file names by regex.
2787
278819. Completely re-implemented the support for maildirsize files, in the light
2789 of a number of problems with the previous contributed implementation
2790 (4.30/29). In particular:
2791
2792 . If the quota is zero, the maildirsize file is maintained, but no quota is
2793 imposed.
2794
2795 . If the maildir directory does not exist, it is created before any attempt
2796 to write a maildirsize file.
2797
2798 . The quota value in the file is just a cache; if the quota is changed in
2799 the transport, the new value overrides.
2800
2801 . A regular expression is available for excluding directories from the
2802 count.
2803
280420. The autoreply transport checks the characters in options that define the
2805 message's headers; it allows continued headers, but it was checking with
2806 isspace() after an embedded newline instead of explicitly looking for a
2807 space or a tab.
2808
280921. If all the "regular" hosts to which an address was routed had passed their
2810 expiry times, and had not reached their retry times, the address was
2811 bounced, even if fallback hosts were defined. Now Exim should go on to try
2812 the fallback hosts.
2813
281422. Increased buffer sizes in the callout code from 1024 to 4096 to match the
2815 equivalent code in the SMTP transport. Some hosts send humungous responses
2816 to HELO/EHLO, more than 1024 it seems.
2817
281823. Refactoring: code in filter.c used (void *) for "any old type" but this
2819 gives compiler warnings in some environments. I've now done it "properly",
2820 using a union.
2821
282224. The replacement for inet_ntoa() that is used with gcc on IRIX systems
2823 (because of problems with the built-in one) was declared to return uschar *
2824 instead of char *, causing compiler failure.
2825
282625. Fixed a file descriptor leak when processing alias/forward files.
2827
282826. Fixed a minor format string issue in dbfn.c.
2829
283027. Typo in exim.c: ("dmbnz" for "dbmnz").
2831
283228. If a filter file refered to $h_xxx or $message_headers, and the headers
2833 contained RFC 2047 "words", Exim's memory could, under certain conditions,
2834 become corrupted.
2835
283629. When a sender address is verified, it is cached, to save repeating the test
2837 when there is more than one recipient in a message. However, when the
2838 verification involves a callout, it is possible for different callout
2839 options to be set for different recipients. It is too complicated to keep
2840 track of this in the cache, so now Exim always runs a verification when a
2841 callout is required, relying on the callout cache for the optimization.
2842 The overhead is duplication of the address routing, but this should not be
2843 too great.
2844
284530. Fixed a bug in callout caching. If a RCPT command caused the sender address
2846 to be verified with callout=postmaster, and the main callout worked but the
2847 postmaster check failed, the verification correctly failed. However, if a
2848 subsequent RCPT command asked for sender verification *without* the
2849 postmaster check, incorrect caching caused this verification also to fail,
2850 incorrectly.
2851
285231. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
2853 it was not caching the DNS options (qualify_single, search_parents) that
2854 were used when the lookup failed. A subsequent lookup with different
2855 options therefore always gave the same answer, though there were cases
2856 where it should not have. (Example: a "domains = !$mx_any" option on a
2857 dnslookup router: the "domains" option is always processed without any
2858 widening, but the router might have qualify_single set.) Now Exim uses the
2859 cached value only when the same options are set.
2860
286132. Added John Jetmore's "exipick" utility to the distribution.
2862
286333. GnuTLS: When an attempt to start a TLS session fails for any reason other
2864 than a timeout (e.g. a certificate is required, and is not provided), an
2865 Exim server now closes the connection immediately. Previously it waited for
2866 the client to close - but if the client is SSL, it seems that they each
2867 wait for each other, leading to a delay before one of them times out.
2868
286934: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
2870 maintained 0.8.x compatibility because I don't think many are using it, and
2871 it is clearly obsolete.
2872
287335. Added TLS support for CRLs: a tls_crl global option and one for the smtp
2874 transport.
2875
287636. OpenSSL: $tls_certificate_verified was being set to 1 even if the
2877 client certificate was expired. A simple patch fixes this, though I don't
2878 understand the full logic of why the verify callback is called multiple
2879 times.
2880
288137. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
2882 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
2883 which causes problems with some clients (such as the Certicom SSL Plus
2884 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
2885 disables the coutermeasure allowing Eudora to connect."
2886
288738. Exim was not checking that a write() to a log file succeeded. This could
2888 lead to Bad Things if a log got too big, in particular if it hit a file
2889 size limit. Exim now panics and dies if it cannot write to a log file, just
2890 as it does if it cannot open a log file.
2891
289239. Modified OS/Makefile-Linux so that it now contains
2893
2894 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
2895
2896 The two -D definitions ensure that Exim is compiled with large file
2897 support, which makes it possible to handle log files that are bigger than
2898 2^31.
2899
290040. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
2901 instance) a domain was checked against a named list that involved a lookup,
2902 causing $domain_data to be set, then another domain was checked against the
2903 same list, then the first domain was re-checked, the value of $domain_data
2904 after the final check could be wrong. In particular, if the second check
2905 failed, it could be set empty. This bug probably also applied to
2906 $localpart_data.
2907
290841. The strip_trailing_dot option was not being applied to the address given
2909 with the -f command-line option.
2910
291142. The code for reading a message's header from the spool was incrementing
2912 $received_count, but never initializing it. This meant that the value was
2913 incorrect (doubled) while delivering a message in the same process in which
2914 it was received. In the most common configuration of Exim, this never
2915 happens - a fresh exec is done - but it can happen when
2916 deliver_drop_privilege is set.
2917
291843. When Exim logs an SMTP synchronization error - client data sent too soon -
2919 it now includes up to 150 characters of the unexpected data in the log
2920 line.
2921
292244. The exim_dbmbuild utility uses fixed size buffers for reading input lines
2923 and building data strings. The size of both of these buffers was 10 000
2924 bytes - far larger than anybody would *ever* want, thought I. Needless to
2925 say, somebody hit the limit. I have increased the maximum line length to
2926 20 000 and the maximum data length of concatenated lines to 100 000. I have
2927 also fixed two bugs, because there was no checking on these buffers. Tsk,
2928 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
2929 buffer is too small.
2930
293145. The exim_dbmbuild utility did not support quoted keys, as Exim does in
2932 lsearch lookups. Now it does.
2933
293446. When parsing a route_list item in a manualroute router, a fixed-length
2935 buffer was used for the list of hosts. I made this 1024 bytes long,
2936 thinking that nobody would ever have a list of hosts that long. Wrong.
2937 Somebody had a whole pile of complicated expansion conditions, and the
2938 string was silently truncated, leading to an expansion error. It turns out
2939 that it is easier to change to an unlimited length (owing to other changes
2940 that have happened since this code was originally written) than to build
2941 structure for giving a limitation error. The length of the item that
2942 expands into the list of hosts is now unlimited.
2943
294447. The lsearch lookup could not handle data where the length of text line was
2945 more than 4095 characters. Such lines were truncated, leading to shortened
2946 data being returned. It should now handle lines of any length.
2947
294848. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
2949 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
2950 ACL").
2951
295249. Cosmetic tidy to scripts like exicyclog that are generated by globally
2953 replacing strings such as BIN_DIRECTORY in a source file: the replacement
2954 no longer happens in comment lines. A list of replacements is now placed
2955 at the head of all of the source files, except those whose only change is
2956 to replace PERL_COMMAND in the very first #! line.
2957
295850. Replaced the slow insertion sort in queue.c, for sorting the list of
2959 messages on the queue, with a bottom-up merge sort, using code contributed
2960 by Michael Haardt. This should make operations like -bp somewhat faster on
2961 large queues. It won't affect queue runners, except when queue_run_in_order
2962 is set.
2963
296451. Installed eximstats 1.31 in the distribution.
2965
296652. Added support for SRV lookups to the dnslookup router.
2967
296853. If an ACL referred to $message_body or $message_body_end, the value was not
2969 reset for any messages that followed in the same SMTP session.
2970
297154. The store-handling optimization for building very long strings was not
2972 differentiating between the different store pools. I don't think this
2973 actually made any difference in practice, but I've tidied it.
2974
297555. While running the routers to verify a sender address, $sender_address
2976 was still set to the sender address. This is wrong, because when routing to
2977 send a bounce to the sender, it would be empty. Therefore, I have changed
2978 it so that, while verifying a sender address, $sender_address is set to <>.
2979 (There is no change to what happens when verifying a recipient address.)
2980
298156. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
2982 target A or AAAA records (if not already returned) without resetting the
2983 qualify_single or search_parents options of the DNS resolver. These are
2984 inappropriate in this case because the targets of MX and SRV records must
2985 be FQDNs. A broken DNS record could cause trouble if it happened to have a
2986 target that, when qualified, matched something in the local domain. These
2987 two options are now turned off when doing these lookups.
2988
298957. It seems that at least some releases of Reiserfs (which does not have the
2990 concept of a fixed number of inodes) returns zero and not -1 for the
2991 number of available inodes. This interacted badly with check_spool_inodes,
2992 which assumed that -1 was the "no such thing" setting. What I have done is
2993 to check that the total number of inodes is greater than zero before doing
2994 the test of how many are available.
2995
299658. When a "warn" ACL statement has a log_message modifier, the message is
2997 remembered, and not repeated. This is to avoid a lot of repetition when a
2998 message has many recipients that cause the same warning to be written.
2999 Howewer, Exim was preserving the list of already written lines for an
3000 entire SMTP session, which doesn't seem right. The memory is now reset if a
3001 new message is started.
3002
300359. The "rewrite" debugging flag was not showing the result of rewriting in the
3004 debugging output unless log_rewrite was also set.
3005
300660. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3007 of (int)(handle) when we know that handle contains (void *)(-1).
3008
300961. The Exim daemon panic-logs an error return when it closes the incoming
3010 connection. However "connection reset by peer" seems to be common, and
3011 isn't really an error worthy of noting specially, so that particular error
3012 is no long logged.
3013
301462. When Exim is trying to find all the local interfaces, it used to panic and
3015 die if the ioctl to get the interface flags failed. However, it seems that
3016 on at least one OS (Solaris 9) it is possible to have an interface that is
3017 included in the list of interfaces, but for which you get a failure error
3018 for this call. This happens when the interface is not "plumbed" into a
3019 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3020 failure of the "get flags" call assumes that the interface is down.
3021
302263. Added a ${eval10: operator, which assumes all numbers are decimal. This
3023 makes life easier for people who are doing arithmetic on fields extracted
3024 from dates, where you often get leading zeros that should not be
3025 interpreted as octal.
3026
302764. Added qualify_domain to the redirect router, to override the global
3028 setting.
3029
303065. If a pathologically long header line contained very many addresses (the
3031 report of this problem mentioned 10 000) and each of them was rewritten,
3032 Exim could use up a very large amount of memory. (It kept on making new
3033 copies of the header line as it rewrote, and never released the old ones.)
3034 At the expense of a bit more processing, the header rewriting function has
3035 been changed so that it no longer eats memory in this way.
3036
303766. The generation of the Received: header has been moved from the time that a
3038 message starts to be received, to the time that it finishes. The timestamp
3039 in the Received: header should now be very close to that of the <= log
3040 line. There are two side-effects of this change:
3041
3042 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3043 logged header lines no longer include the local Received: line, because
3044 it has not yet been created. The same applies to a copy of the message
3045 that is returned to a non-SMTP sender when a message is rejected.
3046
3047 (b) When a filter file is tested using -bf, no additional Received: header
3048 is added to the test message. After some thought, I decided that this
3049 is a bug fix.
3050
3051 This change does not affect the value of $received_for. It is still set
3052 after address rewriting, but before local_scan() is called.
3053
305467. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3055
305668. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3057 gave an unhelpful panic error message, and a defer error. I have managed to
3058 change this behaviour so that it now rejects any supplied certificate,
3059 which seems right, as the list of acceptable certificates is empty.
3060
306169. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3062 gave an unhelpful defer error. I have not managed to make this reject any
3063 supplied certificates, but the error message it gives is "no certificate
3064 supplied", which is not helpful.
3065
306670. exigrep's output now also includes lines that are not associated with any
3067 message, but which match the given pattern. Implemented by a patch from
3068 Martin Sluka, which also tidied up the Perl a bit.
3069
307071. Recipient callout verification, like sender verification, was using <> in
3071 the MAIL FROM command. This isn't really the right thing, since the actual
3072 sender may affect whether the remote host accepts the recipient or not. I
3073 have changed it to use the actual sender in the callout; this means that
3074 the cache record is now keyed on a recipient/sender pair, not just the
3075 recipient address. There doesn't seem to be a real danger of callout loops,
3076 since a callout by the remote host to check the sender would use <>.
3077 [SEE ABOVE: changed after hitting problems.]
3078
307972. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3080 temporary errors. However, in the case of such a code being given after
3081 the end of a data transmission (i.e. after ".") Exim was failing to write
3082 a retry record for the message. (Yes, there was some broken host that was
3083 actually sending 8xx at this point.)
3084
308573. An unknown lookup type in a host list could cause Exim to panic-die when
3086 the list was checked. (An example that provoked this was putting <; in the
3087 middle of a list instead of at the start.) If this happened during a DATA
3088 ACL check, a -D file could be left lying around. This kind of configuration
3089 error no longer causes Exim to die; instead it causes a defer errror. The
3090 incident is still logged to the main and panic logs.
3091
309274. Buglet left over from Exim 3 conversion. The message "too many messages
3093 in one connection" was written to the rejectlog but not the mainlog, except
3094 when address rewriting (yes!) was being logged.
3095
309675. Added write_rejectlog option.
3097
309876. When a system filter was run not as root (that is, when system_filter_user
3099 was set), the values of the $n variables were not being returned to the
3100 main process; thus, they were not subsequently available in the $sn
3101 variables.
3102
310377. Added +return_path_on_delivery log selector.
3104
310578. A connection timeout was being treated differently from recipients deferred
3106 when testing hosts_max_try with a message that was older than the host's
3107 retry timeout. (The host should not be counted, thus allowing all hosts to
3108 be tried at least once before bouncing.) This may have been the cause of an
3109 occasionally reported bug whereby a message would remain on the queue
3110 longer than the retry timeout, but would be bounced if a delivery was
3111 forced. I say "may" because I never totally pinned down the problem;
3112 setting up timeout/retry tests is difficult. See also the next item.
3113
311479. The ultimate address timeout was not being applied to errors that involved
3115 a combination of host plus message (for example, a timeout on a MAIL
3116 command). When an address resolved to a number of possible hosts, and they
3117 were not all tried for each delivery (e.g. because of hosts_max_try), a
3118 message could remain on the queue longer than the retry timeout.
3119
312080. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3121 Haardt.
3122
312381. Fixed an obscure SMTP outgoing bug which required at least the following
3124 conditions: (a) there was another message waiting for the same server;
3125 (b) the server returned 5xx to all RCPT commands in the first message so
3126 that the message was not completed; (c) the server dropped the connection
3127 or gave a negative response to the RSET that Exim sends to abort the
3128 transaction. The observed case was a dropped connection after DATA that had
3129 been sent in pipelining mode. That is, the server had advertised PIPELINING
3130 but was not implementing it correctly. The effect of the bug was incorrect
3131 behaviour, such as trying another host, and this could lead to a crash.
3132
3133
3134Exim version 4.30
3135-----------------
3136
3137 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3138 and daemon.c were passed as pointers to ints; they should have been
3139 pointers to socklen_t variables (which are typically unsigned ints).
3140
3141 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3142 fixed.
3143
3144 3. Fixed a really odd bug that affected only the testing scheme; patching a
3145 certain fixed string in the binary changed the value of another string that
3146 happened to be identical to the end of the original first string.
3147
3148 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3149 name", it returns that address as the IP address. On some operating
3150 systems (e.g. Solaris), it also passes back the IP address string as the
3151 "host name". However, on others (e.g. Linux), it passes back an empty
3152 string. Exim wasn't checking for this, and was changing the host name to an
3153 empty string, assuming it had been canonicized.
3154
3155 5. Although rare, it is permitted to have more than one PTR record for a given
3156 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3157 all the names associated with an address, because they do in Solaris.
3158 However, it seems that they do not in Linux for data that comes from the
3159 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3160 I found this out when I moved to a new Linux workstation and tried to run
3161 the Exim test suite.
3162
3163 To get round this problem I have changed the code so that it now does its
3164 own call to the DNS to look up PTR records when searching for a host name.
3165 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3166 addresses that are only in /etc/hosts are still found.
3167
3168 This behaviour is, however, controlled by an option called host_lookup_
3169 order, which defaults to "bydns:byaddr". If people want to use the other
3170 order, or indeed, just use one or the other means of lookup, they can
3171 specify it in this variable.
3172
3173 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3174 some operating systems, this comes back from gethostbyaddr() as an empty
3175 string, and this is what Exim used to test for. However, it seems that in
3176 other systems, "." is yielded. Exim now tests for this case too.
3177
3178 7. The values of check_spool_space and check_log_space are now held internally
3179 as a number of kilobytes instead of an absolute number of bytes. If a
3180 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3181 kilobyte. This means that much larger values can be stored.
3182
3183 8. Exim monitor: an attempt to get the action menu when not actually pointing
3184 at a message produces an empty menu entitled "No message selected". This
3185 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3186 no entries in it ("Shell widget menu has zero width and/or height"). So I
3187 have added a single, blank menu entry in this case.
3188
3189 9. Added ${quote_local_part.
3190
319110. MIME decoding is now applied to the contents of Subject: header lines when
3192 they are logged.
3193
319411. Now that a reference to $sender_host_address automatically causes a reverse
3195 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3196 host lookup before query-style lookups in lists that might use this
3197 variable. This has therefore been abolished, and the "net-" prefix is no
3198 longer necessary for query-style lookups.
3199
320012. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3201 have been a typo for LFLAGS, so it has been changed.
3202
320313. The install script calls Exim with "-C /dev/null" in order to find the
3204 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3205 to be output. Howeve, since Exim outputs its version number before the
3206 error, it didn't break the script. It just looked ugly. I fixed this by
3207 always allowing "-C /dev/null" if the caller is root.
3208
320914. Ignore overlarge ACL variable number when reading spool file - insurance
3210 against a later release with more variables having written the file.
3211
321215. The standard form for an IPv6 address literal was being rejected by EHLO.
3213 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3214 this, as well as the form without the "IPv6" on the front.
3215
321616. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3217 OS/Makefile-Darwin file.
3218
321917. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3220 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3221
322218. After change 4.21/52, "%ld" was used to format the contents of the $inode
3223 variable. However, some OS use ints for inodes. I've added cast to long int
3224 to get rid of the compiler warning.
3225
322619. I had forgotten to lock out "/../" in configuration file names when
3227 ALT_CONFIG_PREFIX was set.
3228
322920. Routers used for verification do not need to specify transports. However,
3230 if such a router generated a host list, and callout was configured, Exim
3231 crashed, because it could not find a port number from the (non-existent)
3232 transport. It now assumes port 25 in this circumstance.
3233
323421. Added the -t option to exigrep.
3235
323622. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3237 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3238 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3239 them is set, LOOKUP_LSEARCH is forced.
3240
324123. "exim -bV" now outputs a list of lookups that are included in the binary.
3242
324324. Added sender and host information to the "rejected by local_scan()" log
3244 line; previously there was no indication of these.
3245
324625. Added .include_if_exists.
3247
324826. Change 3.952/11 added an explicit directory sync on top of a file sync for
3249 Linux. It turns out that not all file systems support this. Apparently some
3250 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3251 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3252 not supported on the file descriptor, is now ignored when Exim is trying to
3253 sync a directory. This applies only to Linux.
3254
325527. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3256
325728. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3258 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3259 this.
3260
326129. Added support for maildirsize files from supplied patch (modified a bit).
3262
326330. The use of :fail: followed by an empty string could lead Exim to respond to
3264 sender verification failures with (e.g.):
3265
3266 550 Verification failed for <xxx>
3267 550 Sender verify failed
3268
3269 where the first response line was missing the '-' that indicates it is not
3270 the final line of the response.
3271
327231. The loop for finding the name of the user that called Exim had a hardwired
3273 limit of 10; it now uses the value of finduser_retries, which is used for
3274 all other user lookups.
3275
327632. Added $received_count variable, available in data and not_smtp ACLs, and at
3277 delivery time.
3278
327933. Exim was neglecting to zero errno before one call of strtol() when
3280 expanding a string and expecting an integer value. On some systems this
3281 resulted in spurious "integer overflow" errors. Also, it was casting the
3282 result into an int without checking.
3283
328434. Testing for a connection timeout using "timeout_connect" in the retry rules
3285 did not work. The code looks as if it has *never* worked, though it appears
3286 to have been documented since at least releast 1.62. I have made it work.
3287
328835. The "timeout_DNS" error in retry rules, also documented since at least
3289 1.62, also never worked. As it isn't clear exactly what this means, and
3290 clearly it isn't a major issue, I have abolished the feature by treating it
3291 as "timeout", and writing a warning to the main and panic logs.
3292
329336. The display of retry rules for -brt wasn't always showing the error code
3294 correctly.
3295
329637. Added new error conditions to retry rules: timeout_A, timeout_MX,
3297 timeout_connect_A, timeout_connect_MX.
3298
329938. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3300 to the empty sender.
3301
330239. The daemon was not analysing the content of -oX till after it had closed
3303 stderr and disconnected from the controlling terminal. This meant that any
3304 syntax errors were only noted on the panic log, and the return code from
3305 the command was 0. By re-arranging the code a little, I've made the
3306 decoding happen first, so such errors now appear on stderr, and the return
3307 code is 1. However, the actual setting up of the sockets still happens in
3308 the disconnected process, so errors there are still only recorded on the
3309 panic log.
3310
331140. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3312 connections (as happens on some IP stacks) was logged at start up time as
3313 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3314 it from "IPv6 and IPv4", which means that two separate sockets are being
3315 used.
3316
331741. The debug output for gethostbyname2() or getipnodebyname() failures now
3318 says whether AF_INET or AF_INET6 was passed as an argument.
3319
332042. Exiwhat output was messed up when time zones were included in log
3321 timestamps.
3322
332343. Exiwhat now gives more information about the daemon's listening ports,
3324 and whether -tls-on-connect was used.
3325
332644. The "port" option of the smtp transport is now expanded.
3327
332845. A "message" modifier in a "warn" statement in a non-message ACL was being
3329 silently ignored. Now an error message is written to the main and panic
3330 logs.
3331
333246. There's a new ACL modifier called "logwrite" which writes to a log file
3333 as soon as it is encountered.
3334
333547. Added $local_user_uid and $local_user_gid at routing time.
3336
333748. Exim crashed when trying to verify a sender address that was being
3338 rewritten to "<>".
3339
334049. Exim was recognizing only a space character after ".include". It now also
3341 recognizes a tab character.
3342
334350. Fixed several bugs in the Perl script that creates the exim.8 man page by
3344 extracting the relevant information from the specification. The man page no
3345 longer contains scrambled data for the -d option, and I've added a section
3346 at the front about calling Exim under different names.
3347
334851. Added "extra_headers" argument to the "mail" command in filter files.
3349
335052. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
3351 crash.
3352
335353. Installed eximstats 1.29.
3354
335554. Added transport_filter_timeout as a generic transport option.
3356
335755. Exim no longer adds an empty Bcc: header to messages that have no To: or
3358 Cc: header lines. This was required by RFC 822, but it not required by RFC
3359 2822.
3360
336156. Exim used to add From:, Date:, and Message-Id: header lines to any
3362 incoming messages that did not have them. Now it does so only if the
3363 message originates locally, that is, if there is no associated remote host
3364 address. When Resent- header lines are present, this applies to the Resent-
3365 lines rather than the non-Resent- lines.
3366
336757. Drop incoming SMTP connection after too many syntax or protocol errors. The
3368 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
3369
337058. Messages for configuration errors now include the name of the main
3371 configuration file - useful now that there may be more than one file in a
3372 list (.included file names were always shown).
3373
337459. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
3375 for those rare installations that do not start the daemon as root or run it
3376 setuid root. I've cut out the call to initgroups() if the daemon is not
3377 root at that time.
3378
337960. The Exim user and group can now be bound into the binary as text strings
3380 that are looked up at the start of Exim's processing.
3381
338261. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
3383
338462. Added $mailstore_basename variable.
3385
338663. Installed patch to sieve.c from Michael Haardt.
3387
338864. When Exim failed to open the panic log after failing to open the main log,
3389 the original message it was trying to log was written to stderr and debug
3390 output, but if they were not available (the usual case in production), it
3391 was lost. Now it is written to syslog before the two lines that record the
3392 failures to open the logs.
3393
339465. Users' Exim filters run in subprocesses under the user's uid. It is
3395 possible for a "deliver" command or an alias in a "personal" command to
3396 provoke an address rewrite. If logging of address rewriting is configured,
3397 this fails because the process is not running as root or exim. There may be
3398 a better way of dealing with this, but for the moment (because 4.30 needs
3399 to be released), I have disabled address rewrite logging when running a
3400 filter in a non-root, non-exim process.
3401
3402
3403Exim version 4.24
3404-----------------
3405
3406 1. The buildconfig auxiliary program wasn't quoting the value set for
3407 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
3408 not defined. This bug was masked in 4.22 by the effect that was fixed in
3409 change 4.23/1.
3410
3411 2. Some messages that were rejected after a message id was allocated were
3412 shown as "incomplete" by exigrep. It no longer does this for messages that
3413 are rejected by local_scan() or the DATA or non-SMTP ACLs.
3414
3415 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
3416 have allow_domain_literals set, the ID did not get logged in the <= line.
3417 Domain literals are now always recognized in Message-ID: header lines.
3418
3419 4. The first argument for a ${extract expansion item is the key name or field
3420 number. Leading and trailing spaces in this item were not being ignored,
3421 causing some misleading effects.
3422
3423 5. When deliver_drop_privilege was set, single queue runner processes started
3424 manually (i.e. by the command "exim -q") or by the daemon (which uses the
3425 same command in the process it spins off) were not dropping privilege.
3426
3427 6. When the daemon running as "exim" started a queue runner, it always
3428 re-executed Exim in the spun-off process. This is a waste of effort when
3429 deliver_drop_privilege is set. The new process now just calls the
3430 queue-runner function directly.
3431
3432
3433Exim version 4.23
3434-----------------
3435
3436 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
3437 HEADERS_CHARSET.
3438
3439 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
3440 ignored. Though the use of -oP was forcing the writing of a pid file, it
3441 was always written to the default place.
3442
3443 3. If the message "no IP address found for host xxxx" is generated during
3444 incoming verification, it is now followed by identification of the incoming
3445 connection (so you can more easily find what provoked it).
3446
3447 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
3448
3449 5. Added some features to "harden" Exim a bit more against certain attacks:
3450
3451 (a) There is now a build-time option called FIXED_NEVER_USERS that can
3452 be put in Local/Makefile. This is like the never_users runtime option,
3453 but it cannot be overridden. The default setting is "root".
3454
3455 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
3456 prefix string with which any file named in a -C command line option
3457 must start.
3458
3459 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
3460 is retained for -C and -D only if the caller of Exim is root. Without
3461 it, the exim user may also use -C and -D and retain privilege.
3462
3463 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
3464 command line option is disabled.
3465
3466 6. Macro names set by the -D option must start with an upper case letter, just
3467 like macro names defined in the configuration file.
3468
3469 7. Added "dereference=" facility to LDAP.
3470
3471 8. Two instances of the typo "uknown" in the source files are fixed.
3472
3473 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
3474 the Configure-Makefile script screwed up while processing it.
3475
347610. Incorporated PCRE 4.4.
3477
347811. The SMTP synchronization check was not operating right at the start of an
3479 SMTP session. For example, it could not catch a HELO sent before the client
3480 waited for the greeting. There is now a check for outstanding input at the
3481 point when the greeting is written. Because of the duplex, asynchronous
3482 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
3483 way, but not yet received, when the check is performed.
3484
348512. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
3486 on TCP/IP sockets, because this apparently causes some broken clients to
3487 timeout.
3488
348913. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
3490 unchanged) from the Cygwin maintainer.
3491
349214. The code for -bV that shows what is in the binary showed "mbx" when maildir
3493 was supported instead of testing for mbx. Effectively a typo.
3494
349515. The spa authenticator server code was not checking that the input it
3496 received was valid base64.
3497
349816. The debug output line for the "set" modifier in ACLs was not showing the
3499 name of the variable that was being set.
3500
350117. Code tidy: the variable type "vtype_string" was never used. Removed it.
3502
350318. Previously, a reference to $sender_host_name did not cause a DNS reverse
3504 lookup on its own. Something else was needed to trigger the lookup. For
3505 example, a match in host_lookup or the need for a host name in a host list.
3506 Now, if $sender_host_name is referenced and the host name has not yet been
3507 looked up, a lookup is performed. If the lookup fails, the variable remains
3508 empty, and $host_lookup_failed is set to "1".
3509
351019. Added "eqi" as a case-independent comparison operator.
3511
351220. The saslauthd authentication condition could segfault if neither service
3513 nor realm was specified.
3514
351521. If an overflowing value such as "2048M" was set for message_size_limit, the
3516 error message that was logged was misleading, and incoming SMTP
3517 connections were dropped. The message is now more accurate, and temporary
3518 errors are given to SMTP connections.
3519
352022. In some error situations (such as 21 above) Exim rejects all SMTP commands
3521 (except RSET) with a 421 error, until QUIT is received. However, it was
3522 failing to send a response to QUIT.
3523
352423. The HELO ACL was being run before the code for helo_try_verify_hosts,
3525 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
3526 ACL is now run after the helo_try_verify_hosts code.
3527
352824. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
3529 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
3530 case-independent, so other case variants are also recognized). Apparently
3531 some systems use these upper case variants.
3532
353325. If more than two messages were waiting for the same host, and a transport
3534 filter was specified for the transport, Exim sent two messages over the
3535 same TCP/IP connection, and then failed with "socket operation on non-
3536 socket" when it tried to send the third.
3537
353826. Added Exim::debug_write and Exim::log_write for embedded Perl use.
3539
354027. The extern definition of crypt16() in expand.c was not being excluded when
3541 the OS had its own crypt16() function.
3542
354328. Added bounce_return_body as a new option, and bounce_return_size_limit
3544 as a preferred synonym for return_size_limit, both as an option and as an
3545 expansion variable.
3546
354729. Added LIBS=-liconv to OS/Makefile-OSF1.
3548
354930. Changed the default configuration ACL to relax the local part checking rule
3550 for addresses that are not in any local domains. For these addresses,
3551 slashes and pipe symbols are allowed within local parts, but the sequence
3552 /../ is explicitly forbidden.
3553
355431. SPA server authentication was not clearing the challenge buffer before
3555 using it.
3556
355732. log_message in a "warn" ACL statement was writing to the reject log as
3558 well as to the main log, which contradicts the documentation and doesn't
3559 seem right (because no rejection is happening). So I have stopped it.
3560
356133. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
3562 However, I am unable to do any testing of this.
3563
356434. Fixed an infelicity in the appendfile transport. When checking directories
3565 for a mailbox, to see if any needed to be created, it was accidentally
3566 using path names with one or more superfluous leading slashes; tracing
3567 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
3568
356935. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
3570 contents are added to the log line that is written for every discarded
3571 recipient. (Previously a log_message setting was ignored.)
3572
357336. The ${quote: operator now quotes the string if it is empty.
3574
357537. The install script runs exim in order to find its version number. If for
3576 some reason other than non-existence or emptiness, which it checks, it
3577 could not run './exim', it was installing it with an empty version number,
3578 i.e. as "exim-". This error state is now caught, and the installation is
3579 aborted.
3580
358138. An argument was missing from the function that creates an error message
3582 when Exim fails to connect to the socket for saslauthd authentication.
3583 This could cause Exim to crash, or give a corrupted message.
3584
358539. Added isip, isip4, and isip6 to ${if conditions.
3586
358740. The ACL variables $acl_xx are now saved with the message, and can be
3588 accessed later in routers, transports, and filters.
3589
359041. The new lookup type nwildlsearch is like wildlsearch, except that the key
3591 strings in the file are not string-expanded.
3592
359342. If a MAIL command specified a SIZE value that was too large to fit into an
3594 int variable, the check against message_size_limit failed. Such values are
3595 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
3596 day this will have to be increased, but I don't think I want to be around
3597 when emails are that large.
3598
3599
3600
3601Exim version 4.22
3602-----------------
3603
3604 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
3605 iconv() is not standard in FreeBSD.
3606
3607 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with
3608 IPv6 enabled. The observed symptom was a segmentation fault on return from
3609 the function os_common_find_running_interfaces() in src/os.c.
3610
3611 3. In the check_special_case() function in daemon.c I had used "errno" as an
3612 argument name, which causes warnings on some systems. This was basically a
3613 typo, since it was named "eno" in the comments!
3614
3615 4. The code that waits for the clock to tick (at a resolution of some fraction
3616 of a second) so as to ensure message-id uniqueness was always waiting for
3617 at least one whole tick, when it could have waited for less. [This is
3618 almost certainly not relevant at current processor speeds, where it is
3619 unlikely to ever wait at all. But we try to future-proof.]
3620
3621 5. The function that sleeps for a time interval that includes fractions of a
3622 second contained a race. It did not block SIGALRM between setting the
3623 timer, and suspending (a couple of lines later). If the interval was short
3624 and the sigsuspend() was delayed until after it had expired, the suspension
3625 never ended. On busy systems this could lead to processes getting stuck for
3626 ever.
3627
3628 6. Some uncommon configurations may cause a lookup to happen in a queue runner
3629 process, before it forks any delivery processes. The open lookup caching
3630 mechanism meant that the open file or database connection was passed into
3631 the delivery process. The problem was that delivery processes always tidy
3632 up cached lookup data. This could cause a problem for the next delivery
3633 process started by the queue runner, because the external queue runner
3634 process does not know about the closure. So the next delivery process
3635 still has data in the lookup cache. In the case of a file lookup, there was
3636 no problem because closing a file descriptor in a subprocess doesn't affect
3637 the parent. However, if the lookup was caching a connection to a database,
3638 the connection was closed, and the second delivery process was likely to
3639 see errors such as "PGSQL: query failed: server closed the connection
3640 unexpectedly". The problem has been fixed by closing all cached lookups
3641 in a queue runner before running a delivery process.
3642
3643 7. Compiler warning on Linux for the second argument of iconv(), which doesn't
3644 seem to have the "const" qualifier which it has on other OS. I've
3645 parameterised it.