Add recognition of SMTP error codes in bespoke messages.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
a5bd321b 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.373 2006/07/13 13:53:32 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
a5bd321b
PH
92PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
93 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
94 latter.
95
c59f5781 96
c887c79e
TF
97Exim version 4.62
98-----------------
99
100TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
101 other effects) broke the use of negated acl sub-conditions.
102
1cce3af8
PH
103PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
104 patch).
105
afb3eaaf
PH
106PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
107 "Deny" causes Exim to reject the incoming connection with a 554 error.
108 Unfortunately, if there is a major crisis, such as a disk failure,
109 tcp-wrappers gives "deny", whereas what one would like would be some
110 kind of temporary error. A kludge has been added to help with this.
111 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
112 554 error is used if errno is still zero or contains ENOENT (which occurs
113 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
114 451 error is used.
115
e173618b
PH
116PH/03 Add -lutil to the default FreeBSD LIBS setting.
117
dd16e114
PH
118PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
119 errors. Otherwise a message that provokes a temporary error (when other
120 messages do not) can cause a whole host to time out.
121
f7fd3850
PH
122PH/05 Batch deliveries by appendfile and pipe transports did not work when the
123 addresses were routed directly to files or pipes from a redirect router.
124 File deliveries just didn't batch; pipe deliveries might have suffered
125 odd errors.
126
d87df92c
PH
127PH/06 A failure to get a lock for a hints database would erroneously always say
128 "Failed to get write lock", even when it was really a read lock.
129
7e9f683d
PH
130PH/07 The appendfile transport was creating MBX lock files with a fixed mode
131 of 0600. This has been changed to use the value of the lockfile_mode
132 option (which defaults to 0600).
133
bfad5236
PH
134PH/08 Applied small patch from the Sieve maintainer.
135
01c490df
PH
136PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
137 folder from quota calculations, a direct delivery into this folder messed
138 up the contents of the maildirsize file. This was because the regex was
139 used only to exclude .Trash (or whatever) when the size of the mailbox
140 was calculated. There was no check that a delivery was happening into an
141 excluded directory. This bug has been fixed by ignoring all quota
142 processing for deliveries into excluded directories.
143
d6629cdc
PH
144PH/10 Added the maildirfolder_create_regex option to appendfile.
145
1cce3af8 146
214e2000
PH
147Exim version 4.61
148-----------------
149
150PH/01 The code for finding all the local interface addresses on a FreeBSD
151 system running IPv6 was broken. This may well have applied to all BSD
152 systems, as well as to others that have similar system calls. The broken
153 code found IPv4 interfaces correctly, but gave incorrect values for the
154 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
155 that it would not match correctly against @[] and not recognize the IPv6
156 addresses as local.
157
f9daeae0
PH
158PH/02 The ipliteral router was not recognizing addresses of the form user@
159 [ipv6:....] because it didn't know about the "ipv6:" prefix.
160
7e66e54d
PH
161PH/03 Added disable_ipv6.
162
c8ea1597
PH
163PH/04 Changed $reply_address to use the raw form of the headers instead of the
164 decoded form, because it is most often used to construct To: headers
165 lines in autoreplies, and the decoded form may well be syntactically
166 invalid. However, $reply_address has leading white space removed, and all
167 newlines turned into spaces so that the autoreply transport does not
168 grumble.
169
911f6fde
PH
170PH/05 If group was specified without a user on a router, and no group or user
171 was specified on a transport, the group from the router was ignored.
172
47ca6d6c
PH
173PH/06 Increased the number of ACL variables to 20 of each type, and arranged
174 for visible compile-time settings that can be used to change these
175 numbers, for those that want even more. Backwards compatibility with old
176 spool files has been maintained. However, going back to a previous Exim
177 release will lost any variables that are in spool files.
178
ed0e9820
PH
179PH/07 Two small changes when running in the test harness: increase delay when
180 passing a TCP/IP connection to a new process, in case the original
181 process has to generate a bounce, and remove special handling of
182 127.0.0.2 (sic), which is no longer necessary.
183
eff37e47
PH
184PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
185 be the same on different OS.
186
1921d2ea
PH
187PH/09 Moved a debug statement in filter processing to avoid a race problem when
188 testing.
189
b3f69ca8
JJ
190JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
191 whether --show-vars was specified or not
192
193JJ/02 exipick: Added support for new ACL variable spool format introduced
194 in 4.61-PH/06
195
424a1c63
PH
196PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
197 syntactically invalid From: or Reply-to: line, and a filter used this to
198 generate an autoreply, and therefore failed to obtain an address for the
199 autoreply, Exim could try to deliver to a non-existent relative file
200 name, causing unrelated and misleading errors. What now happens is that
201 it logs this as a hard delivery error, but does not attempt to create a
202 bounce message.
203
7a100415
PH
204PH/11 The exinext utility has a -C option for testing purposes, but although
205 the given file was scanned by exinext itself; it wasn't being passed on
206 when Exim was called.
207
19b9dc85
PH
208PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
209 an end-of-file indication when reading a command response.
210
309bd837
PH
211PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
212 compiled. In many other places in Exim, IPv6 addresses are always
213 recognized, so I have changed this. It also means that IPv4 domain
214 literals of the form [IPV4:n.n.n.n] are now always recognized.
215
59e82a2a
PH
216PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
217 used if the router is not running as root, for example, when verifying at
218 ACL time, or when using -bh. The debugging output from this situation was
219 non-existent - all you got was a failure to exec. I have made two
220 changes:
221
222 (a) Failures to set uid/gid, the current directory, or a process leader
223 in a subprocess such as that created by queryprogram now generate
224 suitable debugging ouput when -d is set.
225
226 (b) The queryprogram router detects when it is not running as root,
227 outputs suitable debugging information if -d is set, and then runs
228 the subprocess without attempting to change uid/gid.
229
9edc04ce
PH
230PH/15 Minor change to Makefile for building test_host (undocumented testing
231 feature).
232
1349e1e5
PH
233PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
234 additional section of a DNS packet that returns MX or SRV records.
235 Instead, it always explicitly searches for A/AAAA records. This avoids
236 major problems that occur when a DNS server includes only records of one
237 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
238 fixed another bug: if SRV records were looked up and the corresponding
239 address records were *not* found in the additional section, the port
240 values from the SRV records were lost.
241
ea49d0e1
PH
242PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
243 using the correct key (the original address) when searching the retry
244 rules in order to find which one to use for generating the retry hint.
245
064a94c9
PH
246PH/18 If quota_warn_message contains a From: header, Exim now refrains from
247 adding the default one. Similarly, if it contains a Reply-To: header, the
248 errors_reply_to option, if set, is not used.
249
727071f8
PH
250PH/19 When calculating a retry time, Exim used to measure the "time since
251 failure" by looking at the "first failed" field in the retry record. Now
252 it does not use this if it is later than than the arrival time of the
253 message. Instead it uses the arrival time. This makes for better
254 behaviour in cases where some deliveries succeed, thus re-setting the
255 "first failed" field. An example is a quota failure for a huge message
256 when small messages continue to be delivered. Without this change, the
257 "time since failure" will always be short, possible causing more frequent
258 delivery attempts for the huge message than are intended.
dd16e114 259 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 260
f78eb7c6
PH
261PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
262 $1, $2, $3) because the numerical variables can be reset during some
263 expansion items (e.g. "match"), thereby losing the authentication data.
264
21c28500
PH
265PH/21 Make -bV show the size of off_t variables so that the test suite can
266 decide whether to run tests for quotas > 2G.
267
268PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
269 mailbox_size, and mailbox_filecount in the appendfile transport. If a
270 filecount value is greater than 2G or if a quota value is greater than 2G
271 on a system where the size of off_t is not greater than 4, a panic error
272 is given.
273
1688f43b
PH
274PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
275 never match. The debug and -bh output now contains an explicit error
276 message indicating a malformed IPv4 address or mask.
277
278PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
279 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
280 PH/23 above applies.
281
9675b384
PH
282PH/25 Do not write to syslog when running in the test harness. The only
283 occasion when this arises is a failure to open the main or panic logs
284 (for which there is an explicit test).
285
6a3f1455
PH
286PH/26 Added the /no_tell option to "control=freeze".
287
dac79d3e
PH
288PH/27 If a host name lookup failed very early in a connection, for example, if
289 the IP address matched host_lookup and the reverse lookup yielded a name
290 that did not have a forward lookup, an error message of the form "no IP
291 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
292 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 293
5977a0b3
PH
294PH/28 An enabling patch from MH: add new function child_open_exim2() which
295 allows the sender and the authenticated sender to be set when
296 submitting a message from within Exim. Since child_open_exim() is
297 documented for local_scan(), the new function should be too.
298
c91535f3
PH
299PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
300 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
301 results in an empty string is now treated as unset.
302
0d46a8c8
PH
303PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
304
278c6e6c
PH
305PH/31 Added sender_verify_fail logging option.
306
2cbb4081
PH
307PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
308 needed by RFC 822 but not by RFC 2822 was commented out. I have now
309 tidied the source and removed it altogether.
310
3eef829e
PH
311PH/33 When a queue run was abandoned because the load average was too high, a
312 log line was always written; now it is written only if the queue_run log
313 selector is set. In addition, the log line for abandonment now contains
314 information about the queue run such as the pid. This is always present
315 in "start" and "stop" lines but was omitted from the "abandon" line.
316
1ab95fa6
PH
317PH/34 Omit spaces between a header name and the colon in the error message that
318 is given when verify = headers_syntax fails (if there are lots of them,
319 the message gets confusing).
320
230205fc
PH
321PH/35 Change the default for dns_check_names_pattern to allow slashes within
322 names, as there are now some PTR records that contain slashes. This check
323 is only to protect against broken name servers that fall over on strange
324 characters, so the fact that it applies to all lookups doesn't matter.
325
75e0e026
PH
326PH/36 Now that the new test suite is complete, we can remove some of the
327 special code in Exim that was needed for the old test suite. For example,
328 sorting DNS records because real resolvers return them in an arbitrary
329 order. The new test suite's fake resolver always returns records in the
330 same order.
331
332PH/37 When running in the test harness, use -odi for submitted messages (e.g.
333 bounces) except when queue_only is set, to avoid logging races between
334 the different processes.
335
145396a6
PH
336PH/38 Panic-die if .include specifies a non-absolute path.
337
3cd34f13
PH
338PH/39 A tweak to the "H" retry rule from its user.
339
11121d3d
JJ
340JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
341 a label. They prevented compilation on older perls.
342
343JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
344 a warning to be raised on newish perls.
345
346JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
347 on queue. Changes to match documented behaviour of showing count of
348 messages matching specified criteria.
349
8def5aaf
PH
350PH/40 Changed the default ident timeout from 30s to 5s.
351
929ba01c
PH
352PH/41 Added support for the use of login_cap features, on those BSD systems
353 that have them, for controlling the resources used by pipe deliveries.
354
2632889e
PH
355PH/42 The content-scanning code uses fopen() to create files in which to put
356 message data. Previously it was not paying any attention to the mode of
357 the files. Exim runs with umask(0) because the rest of the code creates
358 files with open(), and sets the required mode explicitly. Thus, these
359 files were ending up world-writeable. This was not a big issue, because,
360 being within the spool directory, they were not world-accessible. I have
361 created a function called modefopen, which takes an additional mode
362 argument. It sets umask(777), creates the file, chmods it to the required
363 mode, then resets the umask. All the relevant calls to fopen() in the
364 content scanning code have been changed to use this function.
365
944a9c55
PH
366PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
367 to 24 hours. This avoids potential overflow problems when processing G
368 and H retry rules. I suspect nobody ever tinkers with this value.
369
4a23603b
PH
370PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
371
4730f942
PH
372PH/45 When the plaintext authenticator is running as a client, the server's
373 challenges are checked to ensure they are valid base64 strings. By
374 default, the authentication attempt is cancelled if an invalid string is
375 received. Setting client_ignore_invalid_base64 true ignores these errors.
376 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
377 they are received. Thus, the responses can be made to depend on the
378 challenges. If an invalid string is ignored, an empty string is placed in
379 the variable.
380
30dba1e6
PH
381PH/46 Messages that are created by the autoreply transport now contains a
382 References: header, in accordance with RFCs 2822 and 3834.
383
382afc6b
PH
384PH/47 Added authenticated_sender_force to the smtp transport.
385
a86229cf
PH
386PH/48 The ${prvs expansion was broken on systems where time_t was long long.
387
50c99ba6
PH
388PH/49 Installed latest patch from the Sieve maintainer.
389
d35e429d
PH
390PH/50 When an Exim quota was set without a file count quota, and mailbox_size
391 was also set, the appendfile transport was unnecessarily scanning a
392 directory of message files (e.g. for maildir delivery) to find the count
393 of files (along with the size), even though it did not need this
394 information. It now does the scan only if it needs to find either the
395 size of the count of files.
396
f90d018c
PH
397PH/51 Added ${time_eval: to convert Exim time strings into seconds.
398
75def545
PH
399PH/52 Two bugs concerned with error handling when the smtp transport is
400 used in LMTP mode:
401
402 (i) Exim was not creating retry information for temporary errors given
403 for individual recipients after the DATA command when the smtp transport
404 was used in LMTP mode. This meant that they could be retried too
405 frequently, and not timed out correctly.
406
407 (ii) Exim was setting the flag that allows error details to be returned
408 for LMTP errors on RCPT commands, but not for LMTP errors for individual
409 recipients that were returned after the DATA command.
410
411PH/53 This is related to PH/52, but is more general: for any failing address,
412 when detailed error information was permitted to be returned to the
413 sender, but the error was temporary, then after the final timeout, only
414 "retry timeout exceeded" was returned. Now it returns the full error as
415 well as "retry timeout exceeded".
416
c46782ef
PH
417PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
418 do this, and (what is worse) MTAs that accept it.
419
71fafd95
PH
420PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
421 will now be deprecated.
422
2c5db4fd
PH
423PH/56 New os.c-cygwin from the Cygwin maintainer.
424
9cf6b11a
JJ
425JJ/06 exipick: added --unsorted option to allow unsorted output in all output
426 formats (previously only available in exim formats via -bpr, -bpru,
427 and -bpra. Now also available in native and exiqgrep formats)
428
429JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
430 with very large, slow to parse queues
431
432JJ/08 exipick: added ! as generic prefix to negate any criteria format
433
434JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
435
898d150f
PH
436PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
437 responses to authentication challenges, though it was showing the
438 challenges; (ii) I've removed the CR characters from the debug output for
439 SMTP output lines.
440
46218253
PH
441PH/58 Allow for the insertion of a newline as well as a space when a string
442 is turned into more than one encoded-word during RFC 2047 encoding. The
443 Sieve code now uses this.
444
e97957bc
PH
445PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
446 data_4xx, lost_connection, tls_required.
447
81e509d7
PH
448PH/60 When a VRFY deferred or FAILED, the log message rather than the user
449 message was being sent as an SMTP response.
450
3d240ff7
PH
451PH/61 Add -l and -k options to exicyclog.
452
b37c4101
PH
453PH/62 When verifying, if an address was redirected to one new address, so that
454 verification continued, and the new address failed or deferred after
455 having set something in $address_data, the value of $address_data was not
456 passed back to the ACL. This was different to the case when no
457 redirection occurred. The value is now passed back in both cases.
458
79378e0f
PH
459PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
460 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
461 use login_cap.h, so on its own it isn't the distinguishing feature. The
462 new name refers directly to the setclassresources() function.
463
e49c7bb4
PH
464PH/65 Added configuration files for NetBSD3.
465
d114ec46
PH
466PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
467
f3d7df6c
PH
468PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
469 is preferred over IPv4.
470
715ab376
PH
471PH/68 The bounce_return_message and bounce_return_body options were not being
472 honoured for bounces generated during the reception of non-SMTP messages.
473 In particular, this applied to messages rejected by the ACL. This bug has
474 been fixed. However, if bounce_return_message is true and bounce_return_
475 body is false, the headers that are returned for a non-SMTP message
476 include only those that have been read before the error was detected.
477 (In the case of an ACL rejection, they have all been read.)
478
6b31b150
PH
479PH/69 The HTML version of the specification is now built in a directory called
480 spec_html instead of spec.html, because the latter looks like a path with
481 a MIME-type, and this confuses some software.
482
483PH/70 Catch two compiler warnings in sieve.c.
484
d515a917
PH
485PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
486 function verify_get_ident() calls ip_connect() to connect a socket, but
487 if the "connect()" function timed out, ip_connect() used to close the
488 socket. However, verify_get_ident() also closes the socket later, and in
489 between Exim writes to the log, which may get opened at this point. When
490 the socket was closed in ip_connect(), the log could get the same file
491 descriptor number as the socket. This naturally causes chaos. The fix is
492 not to close the socket in ip_connect(); the socket should be closed by
493 the function that creates it. There was only one place in the code where
494 this was missing, in the iplookup router, which I don't think anybody now
495 uses, but I've fixed it anyway.
496
9b8fadde
PH
497PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
498 well as to direct DNS lookups. Otherwise the handling of names in host
499 lists is inconsistent and therefore confusing.
500
214e2000 501
5de37277
PH
502Exim version 4.60
503-----------------
504
cc38ddbf
PH
505PH/01 Two changes to the default runtime configuration:
506
507 (1) Move the checks for relay_from_hosts and authenticated clients from
508 after to before the (commented out) DNS black list checks.
509
510 (2) Add control=submission to the relay_from_hosts and authenticated
511 clients checks, on the grounds that messages accepted by these
512 statements are most likely to be submissions.
5de37277 513
72fdd6ae
PH
514PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
515
516 (1) Generate an error if the third argument for the ${prvs expansion is
517 not a single digit.
518
519 (2) Treat a missing third argument of ${prvscheck as if it were an empty
520 string.
521
522 (3) Reset the variables that are obtained from the first argument of
523 ${prvscheck and used in the second argument before leaving the code,
524 because their memory is reclaimed, so using them afterwards may do
525 silly things.
526
527 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
528 one (it's much easier than Tom thought :-).
529
530 (5) Because of (4), we can now allow for the use of $prvscheck_result
531 inside the third argument.
cb9328de 532
cb741023
PH
533PH/03 For some reason, the default setting of PATH when running a command from
534 a pipe transport was just "/usr/bin". I have changed it to
535 "/bin:/usr/bin".
536
f174f16e
PH
537PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
538 anything to be listed in the output from -bV.
b2f5a032 539
c25242d7
PH
540PH/05 When a filter generated an autoreply, the entire To: header line was
541 quoted in the delivery log line, like this:
542
543 => >A.N.Other <ano@some.domain> <original@ddress> ...
544
545 This has been changed so that it extracts the operative address. There
546 may be more than one such address. If so, they are comma-separated, like
547 this:
548
549 => >ano@some.domain,ona@other.domain <original@ddress> ...
550
82c19f95
PH
551PH/06 When a client host used a correct literal IP address in a HELO or EHLO
552 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
553 not being looked up in the rDNS to get a host name, Exim was showing the
554 IP address twice in Received: lines, even though the IP addresses were
555 identical. For example:
556
557 Received: from [1.2.3.4] (helo=[1.2.3.4])
558
559 However, if the real host name was known, it was omitting the HELO data
560 if it matched the actual IP address. This has been tidied up so that it
561 doesn't show the same IP address twice.
562
d7ffbc12
PH
563PH/07 When both +timestamp and +memory debugging was on, the value given by
564 $tod_xxx expansions could be wrong, because the tod_stamp() function was
565 called by the debug printing, thereby overwriting the timestamp buffer.
566 Debugging no longer uses the tod_stamp() function when +timestamp is set.
567
9f526266
PH
568PH/08 When the original message was included in an autoreply transport, it
569 always said "this is a copy of the message, including all the headers",
570 even if body_only or headers_only was set. It now gives an appropriate
571 message.
572
87fcc8b9
PH
573PH/09 Applied a patch from the Sieve maintainer which:
574
575 o fixes some comments
576 o adds the (disabled) notify extension core
577 o adds some debug output for the result of if/elsif tests
578 o points to the current vacation draft in the documentation
579 and documents the missing references header update
580
581 and most important:
582
583 o fixes a bug in processing the envelope test (when testing
584 multiple envelope elements, the last element determinted the
585 result)
586
456682f5
PH
587PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
588 Electronic Mail") by including:
589
590 Auto-submitted: auto-generated
591
592 in the messages that it generates (bounce messages and others, such as
593 warnings). In the case of bounce messages for non-SMTP mesages, there was
594 also a typo: it was using "Auto_submitted" (underscore instead of
595 hyphen). Since every message generated by Exim is necessarily in response
596 to another message, thes have all been changed to:
597
598 Auto-Submitted: auto-replied
599
600 in accordance with these statements in the RFC:
601
602 The auto-replied keyword:
603
604 - SHOULD be used on messages sent in direct response to another
605 message by an automatic process,
606
607 - MUST NOT be used on manually-generated messages,
608
609 - MAY be used on Delivery Status Notifications (DSNs) and Message
610 Disposition Notifications (MDNs),
611
612 - MUST NOT be used on messages generated by automatic or periodic
613 processes, except for messages which are automatic responses to
614 other messages.
615
3e46c1aa
PH
616PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
617 to the default Received: header definition.
456682f5 618
49826d12
PH
619PH/12 Added log selector acl_warn_skipped (default on).
620
eba0c039
PH
621PH/13 After a successful wildlsearch lookup, discard the values of numeric
622 variables because (a) they are in the wrong storage pool and (b) even if
623 they were copied, it wouldn't work properly because of the caching.
624
a0d6ba8a
PH
625PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
626 checking when decoding. Apparently there are clients that generate
627 overlong encoded strings. Why am I not surprised?
628
f0917727
PH
629PH/15 If the first argument of "${if match_address" was not empty, but did not
630 contain an "@" character, Exim crashed. Now it writes a panic log message
631 and treats the condition as false.
632
096fee00
PH
633PH/16 In autoreply, treat an empty string for "once" the same as unset.
634
024bd3c2
PH
635PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
636 extension "envelope-auth". The code is finished and in agreement with
637 other implementations, but there is no documentation so far and in fact,
638 nobody wrote the draft yet. This extension is currently #undef'ed, thus
639 not changing the active code.
640
641 Print executed "if" and "elsif" statements when debugging is used. This
642 helps a great deal to understand what a filter does.
643
644 Document more things not specified clearly in RFC3028. I had all this
645 sorted out, when out of a sudden new issues came to my mind. Oops."
646
df199fec
PH
647PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
648 (Bugzilla #53).
649
d27f1df3
PH
650PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
651 canonical form (as documented). However, after a host name lookup from
652 the IP address, check_host() was doing a simple string comparison with
653 addresses acquired from the DNS when checking that the found name did
654 have the original IP as one of its addresses. Since any found IPv6
655 addresses are likely to be in abbreviated form, the comparison could
656 fail. Luckily, there already exists a function for doing the comparison
657 by converting both addresses to binary, so now that is used instead of
658 the text comparison.
659
96776534
PH
660PH/20 There was another similar case to PH/19, when a complete host name was
661 given in a host list; looking up its IP address could give an abbreviated
662 form, whereas the current host's name might or might not be abbreviated.
663 The same fix has been applied.
664
5de37277 665
9a799bc0
PH
666Exim version 4.54
667-----------------
668
669PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
670 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
671 It now does.
672
99a4b039
PH
673PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
674 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
675
676PH/03 Typo: missing ".o" in src/pcre/Makefile.
677
4b233853
PH
678PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
679 header line, restrict the check to what is listed in RFCs 2369 and 2929.
680 Also, for "Auto-Submitted", treat anything other than "no" as
681 non-personal, in accordance with RFC 3834. (Previously it treated
682 anything starting "auto-" as non-personal.)
683
8857ccfd
PH
684TF/01 The control=submission/name=... option had a problem with syntax
685 errors if the name included a slash character. The /name= option
686 now slurps the rest of the string, so it can include any characters
687 but it must come last in the list of options (after /sender_retain
688 or /domain=).
689
433a2980
PH
690PH/05 Some modifications to the interface to the fake nameserver for the new
691 testing suite.
692
3e46c1aa 693
9a799bc0 694
e3a311ba
TK
695Exim version 4.53
696-----------------
697
698TK/01 Added the "success_on_redirect" address verification option. See
699 NewStuff for rationale and an example.
700
13b685f9
PH
701PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
702
395ff96d
PH
703PH/02 Patch to exigrep to allow it to work on syslog lines.
704
5b68f6e4
PH
705PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
706 fread() to skip over the body file's header line, because in Cygwin the
707 header line is locked and is inaccessible.
708
1ab52c69
PH
709PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
710 co-exist for some time) to make it clear that it is the Exim ID that is
711 referenced, not the Message-ID: header line.
712
b07e6aa3
PH
713PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
714 string_format() function, because snprintf() does not exist on all
715 operating systems.
716
254e032f
PH
717PH/06 The use of forbid_filter_existstest now also locks out the use of the
718 ${stat: expansion item.
719
3af76a81
PH
720PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
721 protocol synchronization error", to keep the pedants happy.
722
2548ba04
PH
723PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
724 well as for IRIX systems, when gcc is being used. See the host.c source
725 file for comments.
726
b6c6011d
PH
727PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
728
cf39cf57
PH
729PH/10 Named domain lists were not working if used in a queue_smtp_domains
730 setting.
731
f1513293
PH
732PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
733 transport and to the smtp transport in LMTP mode.
734
727549a4
PH
735TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
736
af46795e
PH
737PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
738 run a filter in a subprocess. This could lead to confusion in subsequent
739 lookups in the parent process. There should also be a search_tidyup() at
740 the end of the subprocess.
741
d7b47fd0
PH
742PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
743 only if the host matched helo_try_verify_hosts, which caused the
744 verification to occur when the EHLO/HELO command was issued. The ACL just
745 tested the remembered result. Now, if a previous verification attempt has
746 not happened, "verify = helo" does it there and then.
747
ee744174
JJ
748JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
749
b582ab87
PH
750TK/03 Fix log output including CR from clamd.
751
41a13e0a
PH
752PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
753 exist provoked a memory error which could cause a segfault.
754
f625cc5a
PH
755PH/15 Installed PCRE 6.2
756
757PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
758
21f7af35
PH
759PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
760 of the problem. Specifically, suggested +O2 rather than +O1 for the
761 HP-UX compiler.
762
31480e42
PH
763PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
764
2d280592
PH
765PH/20 If a delivery was routed to a non-standard port by means of an SRV
766 record, the port was not correctly logged when the outgoing_port log
767 selector was set (it logged the transort's default port).
768
7cd1141b
PH
769PH/21 Added support for host-specific ports to manualroute, queryprogram,
770 fallback_hosts, and "hosts" in the smtp transport.
771
772PH/22 If the log selector "outgoing_port" is set, the port is now also given on
773 host errors such as "Connection refused".
774
750af86e
PH
775PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
776 authentication with radiusclient 0.4.9:
777
778 - Error returned from rc_read_config was caught wrongly
779 - Username/password not passed on to radius server due to wrong length.
780
781 The presumption is that some radiusclient API changes for 4.51/PH/17
782 were not taken care of correctly. The code is still untested by me (my
783 Linux distribution still has 0.3.2 of radiusclient), but it was
784 contributed by a Radius user.
785
786PH/24 When doing a callout, the value of $domain wasn't set correctly when
787 expanding the "port" option of the smtp transport.
788
4304270b
TK
789TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
790 while reading a MIME header. Thanks to Tom Hughes for a patch.
791
750af86e
PH
792PH/24 Include config.h inside local_scan.h so that configuration settings are
793 available.
794
64ffc24f
PH
795PH/25 Make $smtp_command_argument available after all SMTP commands. This means
796 that in an ACL for RCPT (for example), you can examine exactly what was
797 received.
798
5dd9625b
PH
799PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
800 commands, but it was not correctly comparing the address with the actual
801 client host address. Thus, it would show the EHLO address in Received:
802 header lines when this was not necessary.
803
5591031b
PH
804PH/27 Added the % operator to ${eval:}.
805
ba18e66a
PH
806PH/28 Exim tries to create and chdir to its spool directory when it starts;
807 it should be ignoring failures (because with -C, for example, it has lost
808 privilege). It wasn't ignoring creation failures other than "already
809 exists".
810
9cec981f
PH
811PH/29 Added "crypteq" to the list of supported features that Exim outputs when
812 -bV or -d is used.
813
aa2b5c79
PH
814PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
815 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
816 too many continuations, the temporary file was not being removed, and the
817 return code was incorrect.
aa2b5c79 818
48a53b7f
PH
819PH/31 Missing "BOOL" in function definition in filtertest.c.
820
1c59d63b
PH
821PH/32 Applied Sieve patches from the maintainer.
822
671012da
TK
823TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
824
1509d3a8
PH
825PH/33 Added "verify = not_blind".
826
827PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
828 Local/Makefile (with some defaults set). These are used in built scripts
829 such as exicyclog, but they have never been used in the exim_install
830 script (though there are many overriding facilities there). I have
831 arranged that the exim_install script now takes note of these two
832 settings.
833
834PH/35 Installed configuration files for Dragonfly.
835
2fe1a124
PH
836PH/36 When a locally submitted message by a trusted user did not contain a
837 From: header, and the sender address was obtained from -f or from an SMTP
838 MAIL command, and the trusted user did not use -F to supply a sender
839 name, $originator_name was incorrectly used when constructing a From:
840 header. Furthermore, $originator_name was used for submission mode
841 messages from external hosts without From: headers in a similar way,
842 which is clearly wrong.
843
8800895a
PH
844PH/37 Added control=suppress_local_fixups.
845
ccfdb010
PH
846PH/38 When log_selector = +received_sender was set, and the addition of the
847 sender made the log line's construction buffer exactly full, or one byte
848 less than full, an overflow happened when the terminating "\n" was
849 subsequently added.
850
1130bfb0
PH
851PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
852 when the result of a list match is failure because a DNS lookup failed.
853
ebcb507f
PH
854PH/40 RM_COMMAND is now used in the building process.
855
c35e155c
PH
856PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
857 the "build-* directories that it finds.
858
95d1f782
PH
859PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
860 address in a domain literal was a prefix of an interface address.
861
fd6de02e
PH
862PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
863 when verifying a sender address, unless rewrite_headers is false.
864
58de37c5
PH
865PH/44 Wrote a long comment about why errors_to addresses are verified as
866 recipients, not senders.
867
261cf466
TF
868TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
869 the ratelimit ACL was added.
870
3ee512ff
PH
871PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
872
e08c430f
PH
873PH/46 Added extra information about PostgreSQL errors to the error string.
874
bef5a11f
PH
875PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
876 avoiding the need to install special zones in a real server. This is
877 backwards compatible; if it can't find the fake resolver, it drops back.
878 Thus, both old and new test suites can be run.
879
7546de58
TF
880TF/02 Added util/ratelimit.pl
881
e5d5a95f
TF
882TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
883 clock is set back in time.
884
2e88a017
TF
885TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
886 Candler <B.Candler@pobox.com>.
887
a5f65aa4
TF
888TF/05 The fix for PH/43 was not completely correct; widen_domains is always
889 OK for addresses that are the result of redirections.
890
e7726cbf
PH
891PH/48 A number of further additions for the benefit of the new test suite,
892 including a fake gethostbyname() that interfaces to the fake DNS resolver
893 (see PH/47 above).
894
a7fdad5b
TF
895TF/06 The fix for widen_domains has also been applied to qualify_single and
896 search_parents which are the other dnslookup options that can cause
897 header rewrites.
898
6af56900
PH
899PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
900 type ("H").
901
0925ede6
PH
902PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
903
66afa403
TF
904TF/07 Exim produced the error message "an SRV record indicated no SMTP
905 service" if it encountered an MX record with an empty target hostname.
906 The message is now "an MX or SRV record indicated no SMTP service".
907
0154e85a
TF
908TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
909 if the DNS of the sending site is misconfigured. This is quite a
910 common situation. This change restores the behaviour of treating a
911 helo verification defer as a failure.
912
16f12c76
PH
913PH/51 If self=fail was set on a router, the bounce message did not include the
914 actual error message.
915
bbe902f0 916
e5a9dba6
PH
917Exim version 4.52
918-----------------
919
920TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
921
22c3b60b
PH
922PH/01 When a transport filter timed out in a pipe delivery, and the pipe
923 command itself ended in error, the underlying message about the transport
924 filter timeout was being overwritten with the pipe command error. Now the
925 underlying error message should be appended to the second error message.
926
06a9b4b5
PH
927TK/01 Fix poll() being unavailable on Mac OSX 10.2.
928
c1ac6996
PH
929PH/02 Reduce the amount of output that "make" produces by default. Full output
930 can still be requested.
931
9c7a242c
PH
932PH/03 The warning log line about a condition test deferring for a "warn" verb
933 was being output only once per connection, rather than after each
934 occurrence (because it was using the same function as for successful
935 "warn" verbs). This seems wrong, so I have changed it.
936
87ba3f5f
PH
937TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
938 it should not have, which might have caused a crash in the right
939 circumstances, but probably never did.
940
941PH/04 Installed a modified version of Tony Finch's patch to make submission
942 mode fix the return path as well as the Sender: header line, and to
943 add a /name= option so that you can make the user's friendly name appear
944 in the header line.
945
29aba418
TF
946TF/03 Added the control = fakedefer ACL modifier.
947
fe0dab11
TF
948TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
949 Mark Lowes for thorough testing.
870f6ba8 950
11d337a4
TK
951TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
952
953TK/03 Merged latest SRS patch from Miles Wilton.
954
415c8f3b
PH
955PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
956 with the definition in sysexits.h (which is #included earlier).
957 Fortunately, Exim does not actually use EX_OK. The code used to try to
958 preserve the sysexits.h value, by assumimg that macro definitions were
959 scanned for macro replacements. I have been disabused of this notion,
960 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 961
958541e9
PH
962PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
963 in the smtp transport. When a block could not be written in a single
964 write() function, the timeout was being re-applied to each part-write.
965 This seems wrong - if the receiver was accepting one byte at a time it
966 would take for ever. The timeout is now adjusted when this happens. It
967 doesn't have to be particularly precise.
968
c206415f
TK
969TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
970 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
971
2a4be8f9
PH
972PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
973 without a domain if the check to <postmaster@domain> fails.
974
1cba11c5
SC
975SC/01 Eximstats: added -xls and the ability to specify output files
976 (patch written by Frank Heydlauf).
977
978SC/02 Eximstats: use FileHandles for outputing results.
979
980SC/03 Eximstats: allow any combination of xls, txt, and html output.
981
982SC/04 Eximstats: fixed display of large numbers with -nvr option
983
984SC/05 Eximstats: fixed merging of reports with empty tables.
985
986SC/06 Eximstats: added the -include_original_destination flag
987
988SC/07 Eximstats: removed tabs and trailing whitespace.
989
1005d00e
TK
990TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
991
992TK/06 MBOX spool code: Add real "From " MBOX separator line
993 so the .eml file is really in mbox format (even though
994 most programs do not really care). Patch from Alex Miller.
995
996TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
997 The latter is generated from $received_to and is only set if the
998 message has one envelope recipient. SA can use these headers,
999 obviously out-of-the-box. Patch from Alex Miller.
1000
9b4768fa
PH
1001PH/08 The ${def test on a variable was returning false if the variable's
1002 value was "0", contrary to what the specification has always said!
1003 The result should be true unless the variable is empty.
1004
1005PH/09 The syntax error of a character other than { following "${if
1006 def:variable_name" (after optional whitespace) was not being diagnosed.
1007 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1008 accidental colon was present, for example, could give incorrect results.
1009
0d7eb84a
PH
1010PH/10 Tidied the code in a number of places where the st_size field of a stat()
1011 result is used (not including appendfile, where other changes are about
1012 to be made).
1013
1014PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1015 This involved changing a lot of size variables from int to off_t. It
1016 should work with maildirs and everything.
1017
40727bee
TK
1018TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1019 spamd dying while we are connected to it.
1020
554d2369
TF
1021TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1022 <jgh@wizmail.org>
1023
1f922db1
PH
1024PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1025 function for BDB 4.3.
1026
ef213c3b
PH
1027PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1028
8ac170f3
PH
1029PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1030 the sources for PCRE have been re-arranged and more files are now
1031 involved.
1032
b1c749bb
PH
1033PH/15 The code I had for printing potentially long long variables in PH/11
1034 above was not the best (it lost precision). The length of off_t variables
1035 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1036 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1037 to be "long long int" or "long int". This is needed for the internal
1038 formatting function string_vformat().
b1c749bb 1039
4aac9b49
PH
1040PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1041 the configuration file to be ":syslog", then the script "guesses" where
1042 the logs files are, rather than using the compiled in default. In our
1043 case the guess is not the same as the compiled default, so the script
1044 suddenly stopped working when I started to use syslog. The patch checks
1045 to see if log_file_path is "". If so, it attempts to read it from exim
1046 with no configuration file to get the compiled in version, before it
1047 falls back to the previous guessing code."
1048
294520c8
TK
1049TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1050 implementing BATV in an Exim configuration. See NewStuff for the gory
1051 details.
1052
5bd022fe
PH
1053PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1054 Makefile that are specific to HP-UX.
1055
90e9ce59
PH
1056PH/18 If the "use_postmaster" option was set for a recipient callout together
1057 with the "random" option, the postmaster address was used as the MAIL
1058 FROM address for the random test, but not for the subsequent recipient
1059 test. It is now used for both.
1060
5ea81592
PH
1061PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1062 patch removes a few documentation additions to RFC 3028, because the
1063 latest draft now contains them. It adds the new en;ascii-case comparator
1064 and a new error check for 8bit text in MIME parts. Comparator and
1065 require names are now matched exactly. I enabled the subaddress
1066 extension, but it is not well tested yet (read: it works for me)."
1067
c6c2dc1d
PH
1068PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1069 rework some of the code of TK/09 above to avoid the hardwired use of
1070 "%lld" and "long long". Replaced the call to snprintf() with a call to
1071 string_vformat().
1072
fffffe4c
PH
1073PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1074 records point to non-existent hosts", "retry timeout exceeded", and
1075 "retry time not reached for any host after a long failure period".
ca02eafb 1076
9a26b6b2
PH
1077PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1078 experimental DomainKeys support:
1079
1080 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1081 (2) On an error such as an illegally used "control", the wrong name for
1082 the control was given.
1083
1084 These problems did NOT occur unless DomainKeys support was compiled.
1085
4aee0225
PH
1086PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1087
32d668a5
PH
1088PH/24 Added ${if match_ip condition.
1089
8187c3f3
PH
1090PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1091 databases so that it will be absolutely obvious if a crash occurs in the
1092 DB library. This is a regular occurrence (often caused by mis-matched
1093 db.h files).
1094
ff790e47 1095PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1096 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1097 picked up on a user's system that detects such things. There doesn't seem
1098 to be a gcc warning option for this - only an attribute that has to be
1099 put on the function's prototype. It seems that in Fedora Core 4 they have
1100 set this on a number of new functions. No doubt there will be more in due
1101 course.
ff790e47 1102
5417f6d1
PH
1103PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1104 specify a transport. However, if an address that was verified by such a
1105 router was the subject of a callout, Exim crashed because it tried to
1106 read the rcpt_include_affixes from the non-existent transport. Now it
1107 just assumes that the setting of that option is false. This bug was
1108 introduced by 4.51/PH/31.
1109
59cf8544
PH
1110PH/28 Changed -d+all to exclude +memory, because that information is very
1111 rarely of interest, but it makes the output a lot bigger. People tend to
1112 do -d+all out of habit.
1113
e7ad8a65
PH
1114PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1115 code in os-type was giving problems when libc.so lives in lib64, like on
1116 x86_64 Fedora Core.
1117
ade42478
PH
1118PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1119 aren't the modern standard, and it seems that some systems' include files
1120 don't always have them. Exim was already checking for some of the newer
1121 ones like T_AAAA, and defining it itself. I've added checks for all the
1122 record types that Exim uses.
1123
182ad5cf
PH
1124PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1125 not automatically generating a new one, as it is supposed to. This
1126 prevented TLS from working. If the file did exist, but contained invalid
1127 data, a new version was generated, as expected. It was only the case of a
1128 non-existent file that was broken.
1129
b0d9fc80
TK
1130TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1131 with a change in libdomainkeys > 0.64.
1132
1133TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1134 from DNS. If the selector record carries the flag, it now has
1135 precedence over the domain-wide flag.
1136
1137TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1138
47c7a64a
PH
1139PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1140 the use of a port name that isn't defined in /etc/services) occurred, the
1141 message was deferred as in a normal delivery, and thus remained on the
1142 spool, instead of being failed because of the mua_wrapper setting. This
1143 is now fixed, and I tidied up some of the mua_wrapper messages at the
1144 same time.
1145
a388bce4
SC
1146SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1147 the messages in a hash of arrays rather than using individual hashes.
1148 This is a bit cleaner and results in dramatic memory savings, albeit
1149 at a slight CPU cost.
1150
1151SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1152 as requested by Marc Sherman.
1153
1154SC/10 Eximstats: added histograms for user specified patterns as requested
1155 by Marc Sherman.
1156
0793e4ed
SC
1157SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1158
c58b88df
PH
1159PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1160 fopen() in the content-scanning modules that did not already have it.
1161
e7ad8a65 1162
7982096b
PH
1163Exim version 4.51
1164-----------------
1165
1a46a8c5
PH
1166TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1167 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1168
2f079f46 1169TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1170
1171TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1172
1173PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1174 to test Sieve filters that use "vacation".
1175
1176PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1177 that changes the way the GnuTLS parameters are stored in the cache file.
1178 The new format can be generated externally. For backward compatibility,
1179 if the data in the cache doesn't make sense, Exim assumes it has read an
1180 old-format file, and it generates new data and writes a new file. This
1181 means that you can't go back to an older release without removing the
1182 file.
1183
1184PH/03 A redirect router that has both "unseen" and "one_time" set does not
1185 work if there are any delivery delays because "one_time" forces the
1186 parent to be marked "delivered", so its unseen clone is never tried
1187 again. For this reason, Exim now forbids the simultaneous setting of
1188 these two options.
1189
1190PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1191 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1192 entry if you want to know the details. The fix, however, neglected to
1193 consider the case when local delivery batching is involved. The test for
1194 "previously delivered" was not happening when checking to see if an
1195 address could be batched with a previous (undelivered) one; under
1196 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1197 address.
1a46a8c5
PH
1198
1199PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1200 in its include files, and this causes problems building Exim.
1201
1202PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1203 header_syntax) but Exim was just ignoring anything given after a slash.
1204 In particular, this caused confusion with an attempt to use "verify =
1205 reverse_host_lookup/defer_ok". An error is now given when options are
1206 supplied for verify items that do not have them. (Maybe reverse_host_
1207 lookup should have a defer_ok option, but that's a different point.)
1208
1209PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1210 defined by RFC 821) to 2048, because there were problems with some AUTH
1211 commands, and RFC 1869 says the size should be increased for extended
1212 SMTP commands that take arguments.
1213
1214PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1215 Finch).
1216
1217PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1218 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1219
49c2d5ea
PH
1220PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1221 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1222 whatever). Otherwise the password may appear in the log. Following change
1223 PH/42 below, there is no longer a chance of it appearing in a bounce
1224 message.
49c2d5ea 1225
bf759a8b
PH
1226PH/11 Installed exipick version 20050225.0 from John Jetmore.
1227
83364d30
PH
1228PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1229 of its addresses was ever tried. (Bugzilla bug #2.)
1230
7999bbd7
PH
1231PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1232 the result incorrectly in the debug output. (It correctly added a newline
1233 to what was transported.)
1234
7dbf77c9
PH
1235TF/01 Added $received_time.
1236
74e0617f
PH
1237PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1238 commented out examples of how to interface to a virus scanner and to
1239 SpamAssassin. Also added commented examples of av_scanner and
1240 spamd_address settings.
1241
2f079f46
PH
1242PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1243 and controls are allowed in which ACLs. There were a couple of minor
1244 errors. Some of the entries in the conditions table (which is a table of
1245 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1246 negation of where the condition IS allowed.
1247
8c841523
PH
1248PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1249
7766a4f0
PH
1250PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1251 header file does not have a version number, so I've had to invent a new
1252 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1253 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1254 radiusclient), but it was contributed by a Radius user.
1255
8b417f2c
PH
1256PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1257 files or directories, for OpenSSL.
1258
901f42cb
PH
1259PH/19 When an Exim process that is running as root has to create an Exim log
1260 file, it does so in a subprocess that runs as exim:exim so as to get the
1261 ownership right at creation (otherwise, other Exim processes might see
1262 the file with the wrong ownership). There was no test for failure of this
1263 fork() call, which would lead to the process getting stuck as it waited
1264 for a non-existent subprocess. Forks do occasionally fail when resources
1265 run out. I reviewed all the other calls to fork(); they all seem to check
1266 for failure.
1267
f9b9210e
PH
1268PH/20 When checking for unexpected SMTP input at connect time (before writing
1269 the banner), Exim was not dealing correctly with a non-positive return
1270 from the read() function. If the client had disconnected by this time,
1271 the result was a log entry for a synchronization error with an empty
1272 string after "input=" when read() returned zero. If read() returned -1
1273 (an event I could not check), uninitialized data bytes were printed.
1274 There were reports of junk text (parts of files, etc) appearing after
1275 "input=".
1276
54cdb463
PH
1277PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1278
cf00dad6
PH
1279PH/22 Added support for macro redefinition, and (re)definition in between
1280 driver and ACL definitions.
1281
acb1b346
PH
1282PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1283 forgetting to use the resulting value; it was using the unexpanded value.
1284
c5ddb310
PH
1285PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1286 hadn't been configured. The fix is from Juergen Kreileder, who
1287 understands it better than I do:
1288
1289 "Here's what I see happening with three configured cyrus_sasl
1290 authenticators configured (plain, login, cram-md5):
1291
1292 On startup auth_cyrus_sasl_init() gets called for each of these.
1293 This means three calls to sasl_listmech() without a specified mech_list.
1294 => SASL tests which mechs of all available mechs actually work
1295 => three warnings about OTP not working
1296 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1297
1298 With the patch, sasl_listmech() also gets called three times. But now
1299 SASL's mech_list option is set to the server_mech specified in the the
1300 authenticator. Or in other words, the answer from sasl_listmech()
1301 gets limited to just the mech you're testing for (which is different
1302 for each call.)
1303 => the return list contains just 'plain' or 'login', 'cram-md5' or
1304 nothing depending on the value of ob->server_mech.
1305
1306 I've just tested the patch: Authentication still works fine,
1307 unavailable mechs specified in the exim configuration are still
1308 caught, and the auth.log warnings about OTP are gone."
1309
31619da6
PH
1310PH/25 When debugging is enabled, the contents of the command line are added
1311 to the debugging output, even when log_selector=+arguments is not
1312 specified.
1313
bebaf0fc
PH
1314PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1315 answer is "GNU", and only if the return is "GNU/something" is the answer
1316 "Linux".
1317
475fe28a
PH
1318PH/27 $acl_verify_message is now set immediately after the failure of a
1319 verification in an ACL, and so is available in subsequent modifiers. In
1320 particular, the message can be preserved by coding like this:
1321
1322 warn !verify = sender
1323 set acl_m0 = $acl_verify_message
1324
1325 Previously, $acl_verify_message was set only while expanding "message"
1326 and "log_message" when a very denied access.
1327
7e8bec7a
PH
1328PH/28 Modified OS/os.c-Linux with
1329
1330 -#ifndef OS_LOAD_AVERAGE
1331 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1332
1333 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1334 nomenclature these days.)
1335
e4a89c47
PH
1336PH/29 Installed patch from the Sieve maintainer that adds the options
1337 sieve_useraddress and sieve_subaddress to the redirect router.
1338
5ca2a9a1
PH
1339PH/30 In these circumstances:
1340 . Two addresses routed to the same list of hosts;
1341 . First host does not offer TLS;
1342 . First host accepts first address;
1343 . First host gives temporary error to second address;
1344 . Second host offers TLS and a TLS session is established;
1345 . Second host accepts second address.
1346 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1347 and peerdn, if requested) that were in fact used only for the second
1348 address.
7e8bec7a 1349
c688b954
PH
1350PH/31 When doing a callout as part of verifying an address, Exim was not paying
1351 attention to any local part prefix or suffix that was matched by the
1352 router that accepted the address. It now behaves in the same way as it
1353 does for delivery: the affixes are removed from the local part unless
1354 rcpt_include_affixes is set on the transport.
1355
fed77020
PH
1356PH/32 Add the sender address, as F=<...>, to the log line when logging a
1357 timeout during the DATA phase of an incoming message.
1358
7fe1560f
PH
1359PH/33 Sieve envelope tests were broken for match types other than :is. I have
1360 applied a patch sanctioned by the Sieve maintainer.
c688b954 1361
ebb6e6d5
PH
1362PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1363 the uid or gid is negative. A case of a negative gid caused this to be
1364 noticed. The fix allows for either to be negative.
1365
9c4e8f60
PH
1366PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1367 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1368 overlooked.
1369
1370PH/36 The change PH/12 above was broken. Fixed it.
1371
d7174846
PH
1372PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1373 the grounds that routing the same address twice would always produce the
1374 same answer. This might have been true once, but it is certainly no
1375 longer true now. Routing a child address may depend on the previous
1376 routing that produced that child. Some complicated redirection strategies
1377 went wrong when messages had multiple recipients, and made Exim's
1378 behaviour dependent on the order in which the addresses were given.
1379
1380 I have moved the duplicate checking until after the routing is complete.
1381 Exim scans the addresses that are assigned to local and remote
1382 transports, and removes any duplicates. This means that more work will be
1383 done, as duplicates will always all be routed, but duplicates are
1384 presumably rare, so I don't expect this is of any significance.
1385
1386 For deliveries to pipes, files, and autoreplies, the duplicate checking
1387 still happens during the routing process, since they are not going to be
1388 routed further.
1389
cfe75fc3
PH
1390PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1391 It corrects a timeout issue with spamd. This is Ian's comment: "The
1392 background is that sometimes spamd either never reads data from a
1393 connection it has accepted, or it never writes response data. The exiscan
1394 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1395 blindly assumes that writes won't block so it may never time out."
1396
be22d70e
PH
1397PH/39 Allow G after quota size as well as K and M.
1398
0612b098
PH
1399PH/40 The value set for $authenticated_id in an authenticator may not contain
1400 binary zeroes or newlines because the value is written to log lines and
1401 to spool files. There was no check on this. Now the value is run through
1402 the string_printing() function so that such characters are converted to
1403 printable escape sequences.
1404
2e0c1448
PH
1405PH/41 $message_linecount is a new variable that contains the total number of
1406 lines in the message. Compare $body_linecount, which is the count for the
1407 body only.
1408
447d236c
PH
1409PH/42 Exim no longer gives details of delivery errors for specific addresses in
1410 bounce and delay warning messages, except in certain special cases, which
1411 are as follows:
1412
1413 (a) An SMTP error message from a remote host;
1414 (b) A message specified in a :fail: redirection;
1415 (c) A message specified in a "fail" command in a system filter;
1416 (d) A message specified in a FAIL return from the queryprogram router;
1417 (e) A message specified by the cannot_route_message router option.
1418
1419 In these cases only, Exim does include the error details in bounce and
1420 warning messages. There are also a few cases where bland messages such
1421 as "unrouteable address" or "local delivery error" are given.
1422
d20976dc
PH
1423PH/43 $value is now also set for the "else" part of a ${run expansion.
1424
f656d135
PH
1425PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1426 being worked on, but at least Exim now implements the latest version to
1427 play with."
1428
2e2a30b4
PH
1429PH/45 In a pipe transport, although a timeout while waiting for the pipe
1430 process to complete was treated as a delivery failure, a timeout while
1431 writing the message to the pipe was logged, but erroneously treated as a
1432 successful delivery. Such timeouts include transport filter timeouts. For
1433 consistency with the overall process timeout, these timeouts are now
1434 treated as errors, giving rise to delivery failures by default. However,
1435 there is now a new Boolean option for the pipe transport called
1436 timeout_defer, which, if set TRUE, converts the failures into defers for
1437 both kinds of timeout. A transport filter timeout is now identified in
1438 the log output.
1439
9176e9f0
PH
1440PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1441 systems where "make" and "gmake" are different, calling "gmake" at top
1442 level broke things. I've arranged for the value of $(MAKE) to be passed
1443 from the Makefile to this script so that it can call the same version of
1444 "make".
1445
7982096b 1446
bbe902f0
PH
1447A note about Exim versions 4.44 and 4.50
1448----------------------------------------
1449
1450Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1451changes of various kinds. As a consequence, a big documentation update was
1452needed. This delayed the release for rather longer than seemed good, especially
1453in the light of a couple of (minor) security issues. Therefore, the changes
1454that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1455release. So 4.44 and 4.50 are in effect two different branches that both start
1456from 4.43.
1457
1458I have left the 4.50 change log unchanged; it contains all the changes since
14594.43. The change log for 4.44 is below; many of its items are identical to
1460those for 4.50. This seems to be the most sensible way to preserve the
1461historical information.
1462
1463
f7b63901 1464Exim version 4.50
495ae4b0
PH
1465-----------------
1466
5fe762f6
PH
1467 1. Minor wording change to the doc/README.SIEVE file.
1468
139059f6 1469 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1470 computation of the current number of files was incorrect.
495ae4b0 1471
7086e875
PH
1472 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1473 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1474 place.
1475
35af9f61
PH
1476 4. Give more explanation in the error message when the command for a transport
1477 filter fails to execute.
1478
b668c215
PH
1479 5. There are several places where Exim runs a non-Exim command in a
1480 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1481 was being done only for the command run by the queryprogram router. It is
1482 now done for all such subprocesses. The other cases are: ${run, transport
1483 filters, and the commands run by the lmtp and pipe transports.
1484
a494b1e1
PH
1485 6. Added CONFIGURE_GROUP build-time option.
1486
1487 7. Some older OS have a limit of 256 on the maximum number of file
1488 descriptors. Exim was using setrlimit() to set 1000 as a large value
1489 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1490 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1491
c5fcb476
PH
1492 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1493 was an oversight, and furthermore, ever since the addition of extra
1494 controls (e.g. 4.43/32), the checks on when to allow different forms of
1495 "control" were broken. There should now be diagnostics for all cases when a
1496 control that does not make sense is encountered.
1497
69358f02
PH
1498 9. Added the /retain_sender option to "control=submission".
1499
5be20824
PH
150010. $recipients is now available in the predata ACL (oversight).
1501
eb2c0248
PH
150211. Tidy the search cache before the fork to do a delivery from a message
1503 received from the command line. Otherwise the child will trigger a lookup
1504 failure and thereby defer the delivery if it tries to use (for example) a
1505 cached ldap connection that the parent has called unbind on.
1506
2a3eea10
PH
150712. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1508 of $address_data from the recipient verification was clobbered by the
1509 sender verification.
1510
151113. The value of address_data from a sender verification is now available in
1512 $sender_address_data in subsequent conditions in the ACL statement.
1513
23c7ff99
PH
151414. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1515
4deaf07d
PH
151615. Added a new option "connect=<time>" to callout options, to set a different
1517 connection timeout.
1518
926e1192
PH
151916. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1520 was its contents. (It was OK if the option was not defined at all.)
1521
650edc6f
PH
152217. A "Completed" log line is now written for messages that are removed from
1523 the spool by the -Mrm option.
1524
2c7db3f5
PH
152518. New variables $sender_verify_failure and $recipient_verify_failure contain
1526 information about exactly what failed.
1527
3d235903
PH
152819. Added -dd to debug only the daemon process.
1529
7c7ad977
PH
153020. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1531 handles timeouts, both on the server side and network timeouts. Renamed the
1532 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1533
981756db
PH
153421. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1535 It is now set to "smtps".
1536
d4eb88df
PH
153722. $host_address is now set to the target address during the checking of
1538 ignore_target_hosts.
1539
154023. When checking ignore_target_hosts for an ipliteral router, no host name was
1541 being passed; this would have caused $sender_host_name to have been used if
1542 matching the list had actually called for a host name (not very likely,
1543 since this list is usually IP addresses). A host name is now passed as
1544 "[x.x.x.x]".
1545
7d468ab8
PH
154624. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1547 code that specifies a non-restarting handler (typically sigaction() in
1548 modern systems) in an attempt to fix a rare and obscure crash bug.
1549
155025. Narrowed the window for a race in the daemon that could cause it to ignore
1551 SIGCHLD signals. This is not a major problem, because they are used only to
1552 wake it up if nothing else does.
1553
62c0818f
PH
155426. A malformed maildirsize file could cause Exim to calculate negative values
1555 for the mailbox size or file count. Odd effects could occur as a result.
1556 The maildirsize information is now recalculated if the size or filecount
1557 end up negative.
1558
26034054
PH
155927. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1560 support for a long time. Removed HAVE_SYS_VFS_H.
1561
af66f652
PH
156228. Installed the latest version of exipick from John Jetmore.
1563
90af77f4
PH
156429. In an address list, if the pattern was not a regular expression, an empty
1565 subject address (from a bounce message) matched only if the pattern was an
1566 empty string. Non-empty patterns were not even tested. This was the wrong
1567 because it is perfectly reasonable to use an empty address as part of a
1568 database query. An empty address is now tested by patterns that are
1569 lookups. However, all the other forms of pattern expect the subject to
1570 contain a local part and a domain, and therefore, for them, an empty
1571 address still always fails if the pattern is not itself empty.
1572
d8ef3577
PH
157330. Exim went into a mad DNS loop when attempting to do a callout where the
1574 host was specified on an smtp transport, and looking it up yielded more
1575 than one IP address.
1576
5cb8cbc6
PH
157731. Re-factored the code for checking spool and log partition space into a
1578 function that finds that data and another that does the check. The former
1579 is then used to implement four new variables: $spool_space, $log_space,
1580 $spool_inodes, and $log_inodes.
1581
14702f5b
PH
158232. The RFC2047 encoding function was originally intended for short strings
1583 such as real names; it was not keeping to the 75-character limit for
1584 encoded words that the RFC imposes. It now respects the limit, and
1585 generates multiple encoded words if necessary. To be on the safe side, I
1586 have increased the buffer size for the ${rfc2047: expansion operator from
1587 1024 to 2048 bytes.
1588
063b1e99
PH
158933. It is now permitted to omit both strings after an "if" condition; if the
1590 condition is true, the result is "true". As before, when the second string
1591 is omitted, a false condition yields an empty string. This makes it less
1592 cumbersome to write custom ACL and router conditions.
1593
652e1b65
PH
159434. Failure to deliver a bounce message always caused it to be frozen, even if
1595 there was an errors_to setting on the router. The errors_to setting is now
1596 respected.
1597
6f0c9a4f
PH
159835. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1599 canonical form (fully expanded) before being placed in
1600 $sender_host_address.
1601
33397d19
PH
160236. The table in the code that translates DNS record types into text (T_A to
1603 "A" for instance) was missing entries for NS and CNAME. It is just possible
1604 that this could have caused confusion if both these types were looked up
1605 for the same domain, because the text type is used as part of Exim's
1606 per-process caching. But the chance of anyone hitting this buglet seems
1607 very small.
1608
7bb56e1f
PH
160937. The dnsdb lookup has been extended in a number of ways.
1610
1611 (1) There is a new type, "zns", which walks up the domain tree until it
1612 finds some nameserver records. It should be used with care.
1613
ea3bc19b
PH
1614 (2) There is a new type, "mxh", which is like "mx" except that it returns
1615 just the host names, not the priorities.
1616
1617 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1618 looked up. The behaviour when one of the lookups defers can be
1619 controlled by a keyword.
7bb56e1f 1620
ea3bc19b 1621 (4) It is now possible to specify the separator character for use when
7bb56e1f 1622 multiple records are returned.
33397d19 1623
0bcb2a0e
PH
162438. The dnslists ACL condition has been extended: it is now possible to supply
1625 a list of IP addresses and/or domains to be looked up in a particular DNS
1626 domain.
1627
2ac0e484
PH
162839. Added log_selector=+queue_time_overall.
1629
4e1fde53
PH
163040. When running the queue in the test harness, wait just a tad after forking a
1631 delivery process, to get repeatability of debugging output.
1632
de365ded
PH
163341. Include certificate and key file names in error message when GnuTLS fails
1634 to set them up, because the GnuTLS error message doesn't include the name
1635 of the failing file when there is a problem reading it.
1636
f05da2e8
PH
163742. Allow both -bf and -bF in the same test run.
1638
d6453af2
PH
163943. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1640
f7b63901
PH
164144. The "Exiscan patch" is now merged into the mainline Exim source.
1642
164345. Sometimes the final signoff response after QUIT could fail to get
1644 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1645 < 0 before doing a fflush(). This bug looks as though it goes back to the
1646 introduction of TLS in release 3.20, but "sometimes" must have been rare
1647 because the tests only now provoked it.
1648
a444213a
PH
164946. Reset the locale to "C" after calling embedded Perl, in case it was changed
1650 (this can affect the format of dates).
1651
0ec020ea
PH
165247. exim_tidydb, when checking for the continued existence of a message for
1653 which it has found a message-specific retry record, was not finding
1654 messages that were in split spool directories. Consequently, it was
1655 deleting retry records that should have stayed in existence.
1656
b1206957
PH
165748. Steve fixed some bugs in eximstats.
1658
165949. The SPA authentication driver was not abandoning authentication and moving
1660 on to the next authenticator when an expansion was forced to fail,
1661 contradicting the general specification for all authenticators. Instead it
1662 was generating a temporary error. It now behaves as specified.
1663
26dd5a95
PH
166450. The default ordering of permitted cipher suites for GnuTLS was pessimal
1665 (the order specifies the preference for clients). The order is now AES256,
1666 AES128, 3DES, ARCFOUR128.
1667
343b2385
PH
166851. Small patch to Sieve code - explicitly set From: when generating an
1669 autoreply.
1670
1c5466b9
PH
167152. Exim crashed if a remote delivery caused a very long error message to be
1672 recorded - for instance if somebody sent an entire SpamAssassin report back
1673 as a large number of 550 error lines. This bug was coincidentally fixed by
1674 increasing the size of one of Exim's internal buffers (big_buffer) that
1675 happened as part of the Exiscan merge. However, to be on the safe side, I
1676 have made the code more robust (and fixed the comments that describe what
1677 is going on).
1678
55ee9ee3
PH
167953. Now that there can be additional text after "Completed" in log lines (if
1680 the queue_time_overall log selector is set), a one-byte patch to exigrep
1681 was needed to allow it to recognize "Completed" as not the last thing in
1682 the line.
1683
d38f8232
PH
168454. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1685 patch that reportedly fixes this has been added. I am not expert enough to
1686 create a test for it. This is what the patch creator wrote:
1687
1688 "I found a little strange behaviour of ldap code when working with
1689 Windows 2003 AD Domain, where users was placed in more than one
1690 Organization Units. When I tried to give exim partial DN, the exit code
1691 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1692 But simultaneously result of request was absolutely normal ldap result,
1693 so I produce this patch..."
1694
3295e65b
PH
1695 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1696 REFERENCE, so I have modified the code to exclude the patch when that macro
1697 is not defined.
1698
7102e136
PH
169955. Some experimental protocols are using DNS PTR records for new purposes. The
1700 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1701 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1702 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1703 CAN-2005-0021
7102e136 1704
3ca0ba97
PH
170556. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1706
c2bcbe20
PH
170757. Double the size of the debug message buffer (to 2048) so that more of very
1708 long debug lines gets shown.
1709
18ce445d
PH
171058. The exicyclog utility now does better if the number of log files to keep
1711 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
1712
1f5b4c3d
PH
171359. Two changes related to the smtp_active_hostname option:
1714
1715 (1) $smtp_active_hostname is now available as a variable.
1716 (2) The default for smtp_banner uses $smtp_active_hostname instead
1717 of $primary_hostname.
1718
b975ba52
PH
171960. The host_aton() function is supposed to be passed a string that is known
1720 to be a valid IP address. However, in the case of IPv6 addresses, it was
1721 not checking this. This is a hostage to fortune. Exim now panics and dies
1722 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
1723 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1724 components; fortuitously, this particular loophole had already been fixed
1725 by change 4.50/55 above.
1726
1727 If there are any other similar loopholes, the new check in host_aton()
1728 itself should stop them being exploited. The report I received stated that
1729 data on the command line could provoke the exploit when Exim was running as
1730 exim, but did not say which command line option was involved. All I could
1731 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1732 running as the user.
ea3a6f44 1733 CAN-2005-0021
85b87bc2
PH
1734
173561. There was a buffer overflow vulnerability in the SPA authentication code
1736 (which came originally from the Samba project). I have added a test to the
1737 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 1738 CAN-2005-0022
b975ba52 1739
17ffcae7
PH
174062. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
1741 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
1742
d95f9fdb
PH
174363. The daemon start-up calls getloadavg() while still root for those OS that
1744 need the first call to be done as root, but it missed one case: when
1745 deliver_queue_load_max is set with deliver_drop_privilege. This is
1746 necessary for the benefit of the queue runner, because there is no re-exec
1747 when deliver_drop_privilege is set.
1748
86b8287f
PH
174964. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
1750 This has been fixed.
1751
60dc5e56
PH
175265. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1753 was in use, was not putting the data itself into the right store pool;
1754 consequently, it could be overwritten for a subsequent message in the same
1755 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1756 the caching.)
1757
533244af
PH
175866. Added hosts_max_try_hardlimit to the smtp transport, default 50.
1759
a5a28604
PH
176067. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
1761 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
1762 the function were treating the return as a boolean value, which happened to
1763 work because 0=false and not-0=true, but is not correct code.
1764
7e634d24
PH
176568. The host_aton() function was not handling scoped IPv6 addresses (those
1766 with, for example, "%eth0" on the end) correctly.
1767
3e11c26b
PH
176869. Fixed some compiler warnings in acl.c for the bitmaps specified with
1769 negated items (that is, ~something) in unsigned ints. Some compilers
1770 apparently mutter when there is no cast.
1771
6729cf78
PH
177270. If an address verification called from an ACL failed, and did not produce a
1773 user-specific message (i.e. there was only a "system" message), nothing was
1774 put in $acl_verify_message. In this situation, it now puts the system
1775 message there.
1776
00f00ca5
PH
177771. Change 4.23/11 added synchronization checking at the start of an SMTP
1778 session; change 4.31/43 added the unwanted input to the log line - except
1779 that it did not do this in the start of session case. It now does.
1780
c9bdd01c
PH
178172. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
1782 This is wrong and can cause the other end to generate a synchronization
1783 error if it is another Exim or anything else that does the synchronization
1784 check. A QUIT command is no longer sent after a timeout.
1785
d43194df
PH
178673. $host_lookup_deferred has been added, to make it easier to detect DEFERs
1787 during host lookups.
1788
fe5b5d0b
PH
178974. The defer_ok option of callout verification was not working if it was used
1790 when verifying addresses in header lines, that is, for this case:
1791
1792 verify = header_sender/callout=defer_ok
1793
76a2d7ba
PH
179475. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
1795 those file descriptors could be used for SMTP connections. If anything
1796 wrote to stderr (the example that came up was "warn" in embedded Perl), it
1797 could be sent to the SMTP client, causing chaos. The daemon now opens
1798 stdin, stdout, and stderr to /dev/null when it puts itself into the
1799 background.
1800
180176. Arrange for output from Perl's "warn" command to be written to Exim's main
1802 log by default. The user can override this with suitable Perl magic.
1803
04f7d5b9
PH
180477. The use of log_message on a "discard" ACL verb, which is supposed to add to
1805 the log message when discard triggers, was not working for the DATA ACL or
1806 for the non-SMTP ACL.
1807
bc60667e
PH
180878. Error message wording change in sieve.c.
1809
bb6e88ff
PH
181079. If smtp_accept_max_per_host was set, the number of connections could be
1811 restricted to fewer than expected, because the daemon was trying to set up
1812 a new connection before checking whether the processes handling previous
1813 connections had finished. The check for completed processes is now done
1814 earlier. On busy systems, this bug wouldn't be noticed because something
1815 else would have woken the daemon, and it would have reaped the completed
1816 process earlier.
1817
1e70f85b
PH
181880. If a message was submitted locally by a user whose login name contained one
1819 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
1820 It caused a spool format error. I have fixed the spool reading code. A
1821 related problem was that the "from" clause in the Received: line became
1822 illegal because of the space(s). It is now covered by ${quote_local_part.
1823
182481. Included the latest eximstats from Steve (adds average sizes to HTML Top
1825 tables).
1826
4e01f9d6
PH
182782. Updated OS/Makefile-AIX as per message from Mike Meredith.
1828
1ee1cef2
PH
182983. Patch from Sieve maintainer to fix unterminated string problem in
1830 "vacation" handling.
1831
6e2b4ccc
PH
183284. Some minor changes to the Linux configuration files to help with other
1833 OS variants using glibc.
1834
8e669ac1
PH
183585. One more patch for Sieve to update vacation handling to latest spec.
1836
495ae4b0 1837
bbe902f0
PH
1838----------------------------------------------------
1839See the note above about the 4.44 and 4.50 releases.
1840----------------------------------------------------
1841
1842
1843Exim version 4.44
1844-----------------
1845
1846 1. Change 4.43/35 introduced a bug that caused file counts to be
1847 incorrectly computed when quota_filecount was set in an appendfile
1848 transport
1849
1850 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1851 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1852 place.
1853
1854 3. Give more explanation in the error message when the command for a transport
1855 filter fails to execute.
1856
1857 4. There are several places where Exim runs a non-Exim command in a
1858 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1859 was being done only for the command run by the queryprogram router. It is
1860 now done for all such subprocesses. The other cases are: ${run, transport
1861 filters, and the commands run by the lmtp and pipe transports.
1862
1863 5. Some older OS have a limit of 256 on the maximum number of file
1864 descriptors. Exim was using setrlimit() to set 1000 as a large value
1865 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1866 systems. I've change it so that if it can't get 1000, it tries for 256.
1867
1868 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1869 was an oversight, and furthermore, ever since the addition of extra
1870 controls (e.g. 4.43/32), the checks on when to allow different forms of
1871 "control" were broken. There should now be diagnostics for all cases when a
1872 control that does not make sense is encountered.
1873
1874 7. $recipients is now available in the predata ACL (oversight).
1875
1876 8. Tidy the search cache before the fork to do a delivery from a message
1877 received from the command line. Otherwise the child will trigger a lookup
1878 failure and thereby defer the delivery if it tries to use (for example) a
1879 cached ldap connection that the parent has called unbind on.
1880
1881 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1882 of $address_data from the recipient verification was clobbered by the
1883 sender verification.
1884
188510. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1886 was its contents. (It was OK if the option was not defined at all.)
1887
188811. A "Completed" log line is now written for messages that are removed from
1889 the spool by the -Mrm option.
1890
189112. $host_address is now set to the target address during the checking of
1892 ignore_target_hosts.
1893
189413. When checking ignore_target_hosts for an ipliteral router, no host name was
1895 being passed; this would have caused $sender_host_name to have been used if
1896 matching the list had actually called for a host name (not very likely,
1897 since this list is usually IP addresses). A host name is now passed as
1898 "[x.x.x.x]".
1899
190014. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1901 code that specifies a non-restarting handler (typically sigaction() in
1902 modern systems) in an attempt to fix a rare and obscure crash bug.
1903
190415. Narrowed the window for a race in the daemon that could cause it to ignore
1905 SIGCHLD signals. This is not a major problem, because they are used only to
1906 wake it up if nothing else does.
1907
190816. A malformed maildirsize file could cause Exim to calculate negative values
1909 for the mailbox size or file count. Odd effects could occur as a result.
1910 The maildirsize information is now recalculated if the size or filecount
1911 end up negative.
1912
191317. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1914 support for a long time. Removed HAVE_SYS_VFS_H.
1915
ea3a6f44 191618. Updated exipick to current release from John Jetmore.
bbe902f0
PH
1917
191819. Allow an empty sender to be matched against a lookup in an address list.
1919 Previously the only cases considered were a regular expression, or an
1920 empty pattern.
1921
192220. Exim went into a mad DNS lookup loop when doing a callout where the
1923 host was specified on the transport, if the DNS lookup yielded more than
1924 one IP address.
1925
ea3a6f44
NM
192621. The RFC2047 encoding function was originally intended for short strings
1927 such as real names; it was not keeping to the 75-character limit for
1928 encoded words that the RFC imposes. It now respects the limit, and
1929 generates multiple encoded words if necessary. To be on the safe side, I
1930 have increased the buffer size for the ${rfc2047: expansion operator from
1931 1024 to 2048 bytes.
bbe902f0 1932
ea3a6f44
NM
193322. Failure to deliver a bounce message always caused it to be frozen, even if
1934 there was an errors_to setting on the router. The errors_to setting is now
1935 respected.
bbe902f0
PH
1936
193723. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1938 canonical form (fully expanded) before being placed in
1939 $sender_host_address.
1940
194124. Updated eximstats to version 1.33
1942
ea3a6f44
NM
194325. Include certificate and key file names in error message when GnuTLS fails
1944 to set them up, because the GnuTLS error message doesn't include the name
1945 of the failing file when there is a problem reading it.
bbe902f0
PH
1946
194726. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 1948 As per change 25.
bbe902f0 1949
ea3a6f44
NM
195027. Reset the locale to "C" after calling embedded Perl, in case it was changed
1951 (this can affect the format of dates).
bbe902f0 1952
ea3a6f44
NM
195328. exim_tidydb, when checking for the continued existence of a message for
1954 which it has found a message-specific retry record, was not finding
1955 messages that were in split spool directories. Consequently, it was
1956 deleting retry records that should have stayed in existence.
bbe902f0
PH
1957
195829. eximstats updated to version 1.35
1959 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
1960 1.35 - bugfix such that pie charts by volume are generated correctly
1961
ea3a6f44
NM
196230. The SPA authentication driver was not abandoning authentication and moving
1963 on to the next authenticator when an expansion was forced to fail,
1964 contradicting the general specification for all authenticators. Instead it
1965 was generating a temporary error. It now behaves as specified.
bbe902f0 1966
ea3a6f44
NM
196731. The default ordering of permitted cipher suites for GnuTLS was pessimal
1968 (the order specifies the preference for clients). The order is now AES256,
1969 AES128, 3DES, ARCFOUR128.
bbe902f0 1970
ea3a6f44
NM
197131. Small patch to Sieve code - explicitly set From: when generating an
1972 autoreply.
bbe902f0 1973
ea3a6f44
NM
197432. Exim crashed if a remote delivery caused a very long error message to be
1975 recorded - for instance if somebody sent an entire SpamAssassin report back
1976 as a large number of 550 error lines. This bug was coincidentally fixed by
1977 increasing the size of one of Exim's internal buffers (big_buffer) that
1978 happened as part of the Exiscan merge. However, to be on the safe side, I
1979 have made the code more robust (and fixed the comments that describe what
1980 is going on).
bbe902f0 1981
ea3a6f44
NM
198233. Some experimental protocols are using DNS PTR records for new purposes. The
1983 keys for these records are domain names, not reversed IP addresses. The
1984 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1985 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
1986 CAN-2005-0021
1987
ea3a6f44
NM
198834. The host_aton() function is supposed to be passed a string that is known
1989 to be a valid IP address. However, in the case of IPv6 addresses, it was
1990 not checking this. This is a hostage to fortune. Exim now panics and dies
1991 if the condition is not met. A case was found where this could be provoked
1992 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1993 components; fortuitously, this particular loophole had already been fixed
1994 by change 4.50/55 or 4.44/33 above.
1995
1996 If there are any other similar loopholes, the new check in host_aton()
1997 itself should stop them being exploited. The report I received stated that
1998 data on the command line could provoke the exploit when Exim was running as
1999 exim, but did not say which command line option was involved. All I could
2000 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2001 running as the user.
bbe902f0
PH
2002 CAN-2005-0021
2003
ea3a6f44
NM
200435. There was a buffer overflow vulnerability in the SPA authentication code
2005 (which came originally from the Samba project). I have added a test to the
2006 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2007 CAN-2005-0022
2008
ea3a6f44
NM
200936. The daemon start-up calls getloadavg() while still root for those OS that
2010 need the first call to be done as root, but it missed one case: when
2011 deliver_queue_load_max is set with deliver_drop_privilege. This is
2012 necessary for the benefit of the queue runner, because there is no re-exec
2013 when deliver_drop_privilege is set.
bbe902f0 2014
ea3a6f44
NM
201537. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2016 was in use, was not putting the data itself into the right store pool;
2017 consequently, it could be overwritten for a subsequent message in the same
2018 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2019 the caching.)
bbe902f0 2020
ea3a6f44
NM
202138. Sometimes the final signoff response after QUIT could fail to get
2022 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2023 < 0 before doing a fflush(). This bug looks as though it goes back to the
2024 introduction of TLS in release 3.20, but "sometimes" must have been rare
2025 because the tests only now provoked it.
bbe902f0
PH
2026
2027
495ae4b0
PH
2028Exim version 4.43
2029-----------------
2030
2031 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2032 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2033 Now it returns an integer. A number of calls were still expecting a T/F
2034 return. Fortuitously, in all cases, the tests worked in OK situations,
2035 which is the norm. However, things would have gone wrong on any write
2036 failures on the smtp file descriptor. This function is used when sending
2037 messages over SMTP and also when doing verify callouts.
2038
2039 2. When Exim is called to do synchronous delivery of a locally submitted
2040 message (the -odf or -odi options), it no longer closes stderr before doing
2041 the delivery.
2042
2043 3. Implemented the mua_wrapper option.
2044
2045 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2046
2047 5. Implemented the functions header_remove(), header_testname(),
2048 header_add_at_position(), and receive_remove_recipient(), and exported them
2049 to local_scan().
2050
2051 6. If an ACL "warn" statement specified the addition of headers, Exim already
2052 inserted X-ACL-Warn: at the start if there was no header name. However, it
2053 was not making this test for the second and subsequent header lines if
2054 there were newlines in the string. This meant that an invalid header could
2055 be inserted if Exim was badly configured.
2056
2057 7. Allow an ACL "warn" statement to add header lines at the start or after all
2058 the Received: headers, as well as at the end.
2059
2060 8. Added the rcpt_4xx retry error code.
2061
2062 9. Added postmaster_mailfrom=xxx to callout verification option.
2063
206410. Added mailfrom=xxxx to the callout verification option, for verify=
2065 header_sender only.
2066
206711. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2068 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2069
207012. Inserted some casts to stop certain compilers warning when using pointer
2071 differences as field lengths or precisions in printf-type calls (mostly
2072 affecting debugging statements).
2073
207413. Added optional readline() support for -be (dynamically loaded).
2075
207614. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2077 same clock tick as a message's arrival, so that its received time was the
2078 same as the "first fail" time on the retry record, and that message
2079 remained on the queue past the ultimate address timeout, every queue runner
2080 would try a delivery (because it was past the ultimate address timeout) but
2081 after another failure, the ultimate address timeout, which should have then
2082 bounced the address, did not kick in. This was a "< instead of <=" error;
2083 in most cases the first failure would have been in the next clock tick
2084 after the received time, and all would be well.
2085
208615. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2087 being recognized when the domain list was tested by the match_domain
2088 condition in an expansion string.
2089
209016. Added the ${str2b64: operator.
2091
209217. Exim was always calling setrlimit() to set a large limit for the number of
2093 processes, without checking whether the existing limit was already
2094 adequate. (It did check for the limit on file descriptors.) Furthermore,
2095 errors from getrlimit() and setrlimit() were being ignored. Now they are
2096 logged to the main and panic logs, but Exim does carry on, to try to do its
2097 job under whatever limits there are.
2098
209918. Imported PCRE 5.0.
2100
210119. Trivial typo in log message " temporarily refused connection" (the leading
2102 space).
2103
210420. If the log selector return_path_on_delivery was set and an address was
2105 redirected to /dev/null, the delivery process crashed because it assumed
2106 that a return path would always be set for a "successful" delivery. In this
2107 case, the whole delivery is bypassed as an optimization, and therefore no
2108 return path is set.
2109
211021. Internal re-arrangement: the function for sending a challenge and reading
2111 a response while authentication was assuming a zero-terminated challenge
2112 string. It's now changed to take a pointer and a length, to allow for
2113 binary data in such strings.
2114
211522. Added the cyrus_sasl authenticator (code supplied by MBM).
2116
211723. Exim was not respecting finduser_retries when seeking the login of the
2118 uid under which it was called; it was always trying 10 times. (The default
2119 setting of finduser_retries is zero.) Also, it was sleeping after the final
2120 failure, which is pointless.
2121
212224. Implemented tls_on_connect_ports.
2123
212425. Implemented acl_smtp_predata.
2125
212626. If the domain in control=submission is set empty, Exim assumes that the
2127 authenticated id is a complete email address when it generates From: or
2128 Sender: header lines.
2129
213027. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2131 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2132 chown and chgrp in /bin and hostname in /usr/bin.
2133
213428. Exim was keeping the "process log" file open after each use, just as it
2135 does for the main log. This opens the possibility of it remaining open for
2136 long periods when the USR1 signal hits a daemon. Occasional processlog
2137 errors were reported, that could have been caused by this. Anyway, it seems
2138 much more sensible not to leave this file open at all, so that is what now
2139 happens.
2140
214129. The long-running daemon process does not normally write to the log once it
2142 has entered its main loop, and it closes the log before doing so. This is
2143 so that log files can straightforwardly be renamed and moved. However,
2144 there are a couple of unusual error situations where the daemon does write
2145 log entries, and I had neglected to close the log afterwards.
2146
214730. The text of an SMTP error response that was received during a remote
2148 delivery was being truncated at 512 bytes. This is too short for some of
2149 the long messages that one sometimes sees. I've increased the limit to
2150 1024.
2151
215231. It is now possible to make retry rules that apply only when a message has a
2153 specific sender, in particular, an empty sender.
2154
215532. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2156 it possible to be selective about when SMTP synchronization is enforced.
2157
215833. Added "control = caseful_local_part" and "control = "caselower_local_part".
2159
216032. Implemented hosts_connection_nolog.
2161
216233. Added an ACL for QUIT.
2163
216434. Setting "delay_warning=" to disable warnings was not working; it gave a
2165 syntax error.
2166
216735. Added mailbox_size and mailbox_filecount to appendfile.
2168
216936. Added control = no_multiline_responses to ACLs.
2170
217137. There was a bug in the logic of the code that waits for the clock to tick
2172 in the case where the clock went backwards by a substantial amount such
2173 that the microsecond fraction of "now" was more than the microsecond
2174 fraction of "then" (but the whole seconds number was less).
2175
217638. Added support for the libradius Radius client library this is found on
2177 FreeBSD (previously only the radiusclient library was supported).
2178
2179
2180Exim version 4.42
2181-----------------
2182
2183 1. When certain lookups returned multiple values in the form name=value, the
2184 quoting of the values was not always being done properly. Specifically:
2185 (a) If the value started with a double quote, but contained no whitespace,
2186 it was not quoted.
2187 (b) If the value contained whitespace other than a space character (i.e.
2188 tabs or newlines or carriage returns) it was not quoted.
2189 This fix has been applied to the mysql and pgsql lookups by writing a
2190 separate quoting function and calling it from the lookup code. The fix
2191 should probably also be applied to nisplus, ibase and oracle lookups, but
2192 since I cannot test any of those, I have not disturbed their existing code.
2193
2194 2. A hit in the callout cache for a specific address caused a log line with no
2195 reason for rejecting RCPT. Now it says "Previous (cached) callout
2196 verification failure".
2197
2198 3. There was an off-by-one bug in the queryprogram router. An over-long
2199 return line was truncated at 256 instead of 255 characters, thereby
2200 overflowing its buffer with the terminating zero. As well as fixing this, I
2201 have increased the buffer size to 1024 (and made a note to document this).
2202
2203 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2204 when Exim is waiting for an SMTP response from a remote server, Exim
2205 restarts its select() call on the socket, thereby resetting its timeout.
2206 This is not a problem when such interrupts are rare. Somebody set up a cron
2207 job to run exiwhat every 2 minutes, which is less than the normal select()
2208 timeout (5 or 10 minutes). This meant that the select() timeout never
2209 kicked in because it was always reset. I have fixed this by comparing the
2210 time when an interrupt arrives with the time at the start of the first call
2211 to select(). If more time than the timeout has elapsed, the interrupt is
2212 treated as a timeout.
2213
2214 5. Some internal re-factoring in preparation for the addition of Sieve
2215 extensions (by MH). In particular, the "personal" test is moved to a
2216 separate function, and given an option for scanning Cc: and Bcc: (which is
2217 not set for Exim filters).
2218
2219 6. When Exim created an email address using the login of the caller as the
2220 local part (e.g. when creating a From: or Sender: header line), it was not
2221 quoting the local part when it contained special characters such as @.
2222
2223 7. Installed new OpenBSD configuration files.
2224
2225 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2226 try to make them clearer.
2227
2228 9. Callout options, other than the timeout value, were being ignored when
2229 verifying sender addresses in header lines. For example, when using
2230
2231 verify = header_sender/callout=no_cache
2232
2233 the cache was (incorrectly) being used.
2234
223510. Added a missing instance of ${EXE} to the exim_install script; this affects
2236 only the Cygwin environment.
2237
223811. When return_path_on_delivery was set as a log selector, if different remote
2239 addresses in the same message used different return paths and parallel
2240 remote delivery occurred, the wrong values would sometimes be logged.
2241 (Whenever a remote delivery process finished, the return path value from
2242 the most recently started remote delivery process was logged.)
2243
224412. RFC 3848 specifies standard names for the "with" phrase in Received: header
2245 lines when AUTH and/or TLS are in use. This is the "received protocol"
2246 field. Exim used to use "asmtp" for authenticated SMTP, without any
2247 indication (in the protocol name) for TLS use. Now it follows the RFC and
2248 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2249 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2250 names appear in log lines as well as in Received: header lines.
2251
225213. Installed MH's patches for Sieve to add the "copy" and "vacation"
2253 extensions, and comparison tests, and to fix some bugs.
2254
225514. Changes to the "personal" filter test:
2256
2257 (1) The test was buggy in that it was just doing the equivalent of
2258 "contains" tests on header lines. For example, if a user's address was
2259 anne@some.where, the "personal" test would incorrectly be true for
2260
2261 To: susanne@some.where
2262
2263 This test is now done by extracting each address from the header in turn,
2264 and checking the entire address. Other tests that are part of "personal"
2265 are now done using regular expressions (for example, to check local parts
2266 of addresses in From: header lines).
2267
2268 (2) The list of non-personal local parts in From: addresses has been
2269 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2270 taken from the Sieve specification recommendations.
2271
2272 (3) If the message contains any header line starting with "List-" it is
2273 treated as non-personal.
2274
2275 (4) The test for "circular" in the Subject: header line has been removed
2276 because it now seems ill-conceived.
2277
227815. Minor typos in src/EDITME comments corrected.
2279
228016. Installed latest exipick from John Jetmore.
2281
228217. If headers_add on a router specified a text string that was too long for
2283 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2284 of string_sprintf() is now avoided.
2285
228618. $message_body_size was not set (it was always zero) when running the DATA
2287 ACL and the local_scan() function.
2288
228919. For the "mail" command in an Exim filter, no default was being set for
2290 the once_repeat time, causing a random time value to be used if "once" was
2291 specified. (If the value happened to be <= 0, no repeat happened.) The
2292 default is now 0s, meaning "never repeat". The "vacation" command was OK
2293 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2294 (I found it when inspecting the code).
2295
229620. There is now an overall timeout for performing a callout verification. It
2297 defaults to 4 times the callout timeout, which applies to individual SMTP
2298 commands during the callout. The overall timeout applies when there is more
2299 than one host that can be tried. The timeout is checked before trying the
2300 next host. This prevents very long delays if there are a large number of
2301 hosts and all are timing out (e.g. when the network connections are timing
2302 out). The value of the overall timeout can be changed by specifying an
2303 additional sub-option for "callout", called "maxwait". For example:
2304
2305 verify = sender/callout=5s,maxwait=20s
2306
230721. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2308 to the end before writing, but this should make it even safer).
2309
231022. Exim was forgetting that it had advertised PIPELINING for the second and
2311 subsequent messages on an SMTP connection. It was also not resetting its
2312 memory on STARTTLS and an internal HELO.
2313
231423. When Exim logs an SMTP synchronization error within a session, it now
2315 records whether PIPELINING has been advertised or not.
2316
231724. Added 3 instances of "(long int)" casts to time_t variables that were being
2318 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2319 rather than long int.
2320
232125. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2322
232326. Added the never_mail option to autoreply.
2324
2325
2326Exim version 4.41
2327-----------------
2328
2329 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2330 crash if the getsockname() call failed; this can happen if a connection is
2331 closed very soon after it is established. The problem was simply in the
2332 order in which certain operations were done, causing Exim to try to write
2333 to the SMTP stream before it had set up the file descriptor. The bug has
2334 been fixed by making things happen in the correct order.
2335
2336
2337Exim version 4.40
2338-----------------
2339
2340 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2341 before the connection was closed, thus losing the rejection response.
2342
2343 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2344 some early Solaris releases, but causes trouble in current releases where
2345 socklen_t is defined.
2346
2347 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2348 always exist.
2349
2350 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2351 configured.
2352
2353 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2354 that releasing the top of it at the end releases what was used for sub-
2355 expansions (unless the block got too big). However, discard this block if
2356 the first thing is a variable or header, so that we can use its block when
2357 it is dynamic (useful for very large $message_headers, for example).
2358
2359 6. Lookups now cache *every* query, not just the most recent. A new, separate
2360 store pool is used for this. It can be recovered when all lookup caches are
2361 flushed. Lookups now release memory at the end of their result strings.
2362 This has involved some general refactoring of the lookup sources.
2363
2364 7. Some code has been added to the store_xxx() functions to reduce the amount
2365 of flapping under certain conditions.
2366
2367 8. log_incoming_interface used to affect only the <= reception log lines. Now
2368 it causes the local interface and port to be added to several more SMTP log
2369 lines, for example "SMTP connection from", and rejection lines.
2370
2371 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2372
237310. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2374
237511. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2376 could be overwritten at the end of the current message (or the start of a
2377 new message if it was set in a HELO ACL). The value is now preserved for
2378 the duration of the SMTP connection.
2379
238012. If a transport had a headers_rewrite setting, and a matching header line
2381 contained an unqualified address, that address was qualified, even if it
2382 did not match any rewriting rules. The underlying bug was that the values
2383 of the flags that permit the existence of unqualified sender and recipient
2384 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2385 non-local messages, and by -bnq for local messages) were not being
2386 preserved with the message after it was received.
2387
238813. When Exim was logging an SMTP synchronization error, it could sometimes log
2389 "next input=" as part of the text comprising the host identity instead of
2390 the correct text. The code was using the same buffer for two different
2391 strings. However, depending on which order the printing function evaluated
2392 its arguments, the bug did not always show up. Under Linux, for example, my
2393 test suite worked just fine.
2394
239514. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2396 doesn't work with some older versions of Perl. It has been changed to "my",
2397 which in any case is probably the better facility to use.
2398
239915. A really picky compiler found some instances of statements for creating
2400 error messages that either had too many or two few arguments for the format
2401 string.
2402
240316. The size of the buffer for calls to the DNS resolver has been increased
2404 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2405 for addresses that have a lot of PTR records. This alleviates a problem; it
2406 does not fully solve it.
2407
240817. A dnsdb lookup for PTR records that receives more data than will fit in the
2409 buffer now truncates the list and logs the incident, which is the same
2410 action as happens when Exim is looking up a host name and its aliases.
2411 Previously in this situation something unpredictable would happen;
2412 sometimes it was "internal error: store_reset failed".
2413
241418. If a server dropped the connection unexpectedly when an Exim client was
2415 using GnuTLS and trying to read a response, the client delivery process
2416 crashed while trying to generate an error log message.
2417
241819. If a "warn" verb in an ACL added multiple headers to a message in a single
2419 string, for example:
2420
2421 warn message = H1: something\nH2: something
2422
2423 the text was added as a single header line from Exim's point of view
2424 though it ended up OK in the delivered message. However, searching for the
2425 second and subsequent header lines using $h_h2: did not work. This has been
2426 fixed. Similarly, if a system filter added multiple headers in this way,
2427 the routers could not see them.
2428
242920. Expanded the error message when iplsearch is called with an invalid key to
2430 suggest using net-iplsearch in a host list.
2431
243221. When running tests using -bh, any delays imposed by "delay" modifiers in
2433 ACLs are no longer actually imposed (and a message to that effect is
2434 output).
2435
243622. If a "gecos" field in a passwd entry contained escaped characters, in
2437 particular, if it contained a \" sequence, Exim got it wrong when building
2438 a From: or a Sender: header from that name. A second bug also caused
2439 incorrect handling when an unquoted " was present following a character
2440 that needed quoting.
2441
244223. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2443 was not being matched caselessly.
2444
244524. Arranged for all hyphens in the exim.8 source to be escaped with
2446 backslashes.
2447
244825. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2449 properly. Recipient callout cache records were still being keyed to include
2450 the sender, even when use_sender was set false. This led to far more
2451 callouts that were necessary. The sender is no longer included in the key
2452 when use_sender is false.
2453
245426. Added "control = submission" modifier to ACLs.
2455
245627. Added the ${base62d: operator to decode base 62 numbers.
2457
245828. dnsdb lookups can now access SRV records.
2459
246029. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2461 the configuration file.
2462
246330. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2464 (-v) mode. This makes the output for a verbose queue run more intelligible.
2465
246631. Added a use_postmaster feature to recipient callouts.
2467
246832. Added the $body_zerocount variable, containing the number of binary zero
2469 bytes in the message body.
2470
247133. The time of last modification of the "new" subdirectory is now used as the
2472 "mailbox time last read" when there is a quota error for a maildir
2473 delivery.
2474
247534. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2476
247735. Added +ignore_unknown as a special item in host lists.
2478
247936. Code for decoding IPv6 addresses in host lists is now included, even if
2480 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2481 address was recognized as an IP address, but was then not correctly decoded
2482 into binary, causing unexpected and incorrect effects when compared with
2483 another IP address.
2484
2485
2486Exim version 4.34
2487-----------------
2488
2489 1. Very minor rewording of debugging text in manualroute to say "list of
2490 hosts" instead of "hostlist".
2491
2492 2. If verify=header_syntax was set, and a header line with an unqualified
2493 address (no domain) and a large number of spaces between the end of the
2494 name and the colon was received, the reception process suffered a buffer
2495 overflow, and (when I tested it) crashed. This was caused by some obsolete
2496 code that should have been removed. The fix is to remove it!
2497
2498 3. When running in the test harness, delay a bit after writing a bounce
2499 message to get a bit more predictability in the log output.
2500
2501 4. Added a call to search_tidyup() just before forking a reception process. In
2502 theory, someone could use a lookup in the expansion of smtp_accept_max_
2503 per_host which, without the tidyup, could leave open a database connection.
2504
2505 5. Added the variables $recipient_data and $sender_data which get set from a
2506 lookup success in an ACL "recipients" or "senders" condition, or a router
2507 "senders" option, similar to $domain_data and $local_part_data.
2508
2509 6. Moved the writing of debug_print from before to after the "senders" test
2510 for routers.
2511
2512 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2513 problems for message scanning, either using a data ACL, or using
2514 local_scan() because the Received: header was not generated till after they
2515 were called (in order to set the time as the time of reception completion).
2516 I have revised the way this works. The header is now generated after the
2517 body is received, but before the ACL or local_scan() are called. After they
2518 are run, the timestamp in the header is updated.
2519
2520
2521Exim version 4.33
2522-----------------
2523
2524 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2525 before starting a queue runner without re-exec. This happened only when
2526 deliver_drop_privilege was set or when the Exim user was set to root. The
2527 effect of the bug was that timeouts during subsequent deliveries caused
2528 crashes instead of being properly handled. The handler is now left at its
2529 default (and expected) setting.
2530
2531 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2532 message, again when deliver_drop_privilege is set or Exim is run as root.
2533 The bug described in (1) was not present in this case, but the tidying up
2534 of the other signals was missing. I have made the two cases consistent.
2535
2536 3. The ignore_target_hosts setting on a manualroute router was being ignored
2537 for hosts that were looked up using the /MX notation.
2538
2539 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2540 in domain lists.
2541
2542 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2543 operated on the sender address. After changing the $sender_address to <>
2544 for the sender address verify, Exim was re-instated it as the original
2545 (before rewriting) address, but remembering that it had rewritten it, so it
2546 wasn't rewriting it again. This bug also had the effect of breaking the
2547 sender address verification caching when the sender address was rewritten.
2548
2549 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2550 This has been changed so that if the ip literal address matches
2551 ignore_target_hosts, the router declines.
2552
2553 7. Added expansion conditions match_domain, match_address, and match_local_
2554 part (NOT match_host).
2555
2556 8. The placeholder for the Received: header didn't have a length field set.
2557
2558 9. Added code to Exim itself and to exim_lock to test for a specific race
2559 condition that could lead to file corruption when using MBX delivery. The
2560 issue is with the lockfile that is created in /tmp. If this file is removed
2561 after a process has opened it but before that process has acquired a lock,
2562 there is the potential for a second process to recreate the file and also
2563 acquire a lock. This could lead to two Exim processes writing to the file
2564 at the same time. The added code performs the same test as UW imapd; it
2565 checks after acquiring the lock that its file descriptor still refers to
2566 the same named file.
2567
256810. The buffer for building added header lines was of fixed size, 8192 bytes.
2569 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2570 when Exim is built.
2571
257211. Added the smtp_active_hostname option. If used, this will typically be made
2573 to depend on the incoming interface address. Because $interface_address is
2574 not set up until the daemon has forked a reception process, error responses
2575 that can happen earlier (such as "too many connections") no longer contain
2576 a host name.
2577
257812. If an expansion in a condition on a "warn" statement fails because a lookup
2579 defers, the "warn" statement is abandoned, and the next ACL statement is
2580 processed. Previously this caused the whole ACL to be aborted.
2581
258213. Added the iplsearch lookup type.
2583
258414. Added ident_timeout as a log selector.
2585
258615. Added tls_certificate_verified as a log selector.
2587
258816. Added a global option tls_require_ciphers (compare the smtp transport
2589 option of the same name). This controls incoming TLS connections.
2590
259117. I finally figured out how to make tls_require_ciphers do a similar thing
2592 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2593 before starting the TLS session.
2594
259518. Tabs are now shown as \t in -bP output.
2596
259719. If the log selector return_path_on_delivery was set, Exim crashed when
2598 bouncing a message because it had too many Received: header lines.
2599
260020. If two routers both had headers_remove settings, and the first one included
2601 a superfluous trailing colon, the final name in the first list and the
2602 first name in the second list were incorrectly joined into one item (with a
2603 colon in the middle).
2604
2605
2606Exim version 4.32
2607-----------------
2608
2609 1. Added -C and -D options to the exinext utility, mainly to make it easier
2610 to include in the automated testing, but these could be helpful when
2611 multiple configurations are in use.
2612
2613 2. The exinext utility was not formatting the output nicely when there was
2614 an alternate port involved in the retry record key, nor when there was a
2615 message id as well (for retries that were specific to a specific message
2616 and a specific host). It was also confused by IPv6 addresses, because of
2617 the additional colons they contain. I have fixed the IPv4 problem, and
2618 patched it up to do a reasonable job for IPv6.
2619
2620 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2621 delivery, the log line now contains "pipelined" if PIPELINING was used.
2622
2623 4. An SMTP transport process used to panic and die if the bind() call to set
2624 an explicit outgoing interface failed. This has been changed; it is now
2625 treated in the same way as a connect() failure.
2626
2627 5. A reference to $sender_host_name in the part of a conditional expansion
2628 that was being skipped was still causing a DNS lookup. This no longer
2629 occurs.
2630
2631 6. The def: expansion condition was not recognizing references to header lines
2632 that used bh_ and bheader_.
2633
2634 7. Added the _cache feature to named lists.
2635
2636 8. The code for checking quota_filecount in the appendfile transport was
2637 allowing one more file than it should have been.
2638
2639 9. For compatibility with Sendmail, the command line option
2640
2641 -prval:sval
2642
2643 is equivalent to
2644
2645 -oMr rval -oMs sval
2646
2647 and sets the incoming protocol and host name (for trusted callers). The
2648 host name and its colon can be omitted when only the protocol is to be set.
2649 Note the Exim already has two private options, -pd and -ps, that refer to
2650 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2651 "s", but I don't think that's a major issue.
2652
265310. A number of refactoring changes to the code, none of which should affect
2654 Exim's behaviour:
2655
2656 (a) The number of logging options was getting close to filling up the
2657 32-bit word that was used as a bit map. I have split them into two classes:
2658 those that are passed in the argument to log_write(), and those that are
2659 only ever tested independently outside of that function. These are now in
2660 separate 32-bit words, so there is plenty of room for expansion again.
2661 There is no change in the user interface or the logging behaviour.
2662
2663 (b) When building, for example, log lines, the code previously used a
2664 macro that called string_cat() twice, in order to add two strings. This is
2665 not really sufficiently general. Furthermore, there was one instance where
2666 it was actually wrong because one of the argument was used twice, and in
2667 one call a function was used. (As it happened, calling the function twice
2668 did not affect the overall behaviour.) The macro has been replaced by a
2669 function that can join an arbitrary number of extra strings onto a growing
2670 string.
2671
2672 (c) The code for expansion conditions now uses a table and a binary chop
2673 instead of a serial search (which was left over from when there were very
2674 few conditions). Also, it now recognizes conditions like "pam" even when
2675 the relevant support is not compiled in: a suitably worded error message is
2676 given if an attempt is made to use such a condition.
2677
267811. Added ${time_interval:xxxxx}.
2679
268012. A bug was causing one of the ddress fields not to be passed back correctly
2681 from remote delivery subprocesses. The field in question was not being
2682 subsequently used, so this caused to problems in practice.
2683
268413. Added new log selectors queue_time and deliver_time.
2685
268614. Might have fixed a bug in maildirsizefile handling that threw up
2687 "unexpected character" debug warnings, and recalculated the data
2688 unnecessarily. In any case, I expanded the warning message to give more
2689 information.
2690
269115. Added the message "Restricted characters in address" to the statements in
2692 the default ACL that block characters like @ and % in local parts.
2693
269416. Change 71 for release 4.31 proved to be much less benign that I imagined.
2695 Three changes have been made:
2696
2697 (a) There was a serious bug; a negative response to MAIL caused the whole
2698 recipient domain to be cached as invalid, thereby blocking all messages
2699 to all local parts at the same domain, from all senders. This bug has
2700 been fixed. The domain is no longer cached after a negative response to
2701 MAIL if the sender used is not empty.
2702
2703 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2704 been restored.
2705
2706 (c) A new callout option, "use_sender" has been added for people who want
2707 the modified behaviour.
2708
2709
2710Exim version 4.31
2711-----------------
2712
2713 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
2714 Larry Rosenman.
2715
2716 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
2717 indeed breaks things for older releases.
2718
2719 3. Added additional logging to the case where there is a problem reading data
2720 from a filter that is running in a subprocess using a pipe, in order to
2721 try to track down a specific problem.
2722
2723 4. Testing facility fudge: when running in the test harness and attempting
2724 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
2725 getting "No route to host". Convert this to a timeout.
2726
2727 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
2728 warning.
2729
2730 6. Some OS don't have socklen_t but use size_t instead. This affects the
2731 fifth argument of getsockopt() amongst other things. This is now
2732 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
2733 can be set for individual OS. I have set it for SunOS5, OSF1, and
2734 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
2735 some earlier ones do not.
2736
2737 7. Change 4.30/15 was not doing the test caselessly.
2738
2739 8. The standard form for an IPv6 address literal was being rejected by address
2740 parsing in, for example, MAIL and RCPT commands. An example of this kind of
2741 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
2742 this, as well as the form without the "IPv6" on the front (but only when
2743 address literals are enabled, of course).
2744
2745 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
2746
274710. Exim crashed if a message with an empty sender address specified by -f
2748 encountered a router with an errors_to setting. This could be provoked only
2749 by a command such as
2750
2751 exim -f "" ...
2752
2753 where an empty string was supplied; "<>" did not hit this bug.
2754
275511. Installed PCRE release 4.5.
2756
275712. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
2758 remained set. It is now erased.
2759
276013. exiqgrep wasn't working on MacOS X because it didn't correctly compute
2761 times from message ids (which are base 36 rather than the normal 62).
2762
276314. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
2764 were being counted as actual protocol errors, and logged if the log
2765 selector +smtp_protocol_error was set. One cannot be perfect in this test,
2766 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
2767 and DATA following a set of rejected RCPTs do not count as protocol errors.
2768 In other words, Exim assumes they were pipelined, though this may not
2769 actually be the case. Of course, in all cases the client gets an
2770 appropriate error code.
2771
277215. If a lookup fails in an ACL condition, a message about the failure may
2773 be available; it is used if testing the ACL cannot continue, because most
2774 such messages specify what the cause of the deferral is. However, some
2775 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
2776 that caused an old message to be retained and used if a later statement
2777 caused a defer, replacing the real cause of the deferral.
2778
277916. If an IP address had so many PTR records that the DNS lookup buffer
2780 was not large enough to hold them, Exim could crash while trying to process
2781 the truncated data. It now detects and logs this case.
2782
278317. Further to 4.21/58, another change has been made: if (and only if) the
2784 first line of a message (the first header line) ends with CRLF, a bare LF
2785 in a subsequent header line has a space inserted after it, so as not to
2786 terminate the header.
2787
278818. Refactoring: tidied an ugly bit of code in appendfile that copied data
2789 unnecessarily, used atoi() instead of strtol(), and didn't check the
2790 termination when getting file sizes from file names by regex.
2791
279219. Completely re-implemented the support for maildirsize files, in the light
2793 of a number of problems with the previous contributed implementation
2794 (4.30/29). In particular:
2795
2796 . If the quota is zero, the maildirsize file is maintained, but no quota is
2797 imposed.
2798
2799 . If the maildir directory does not exist, it is created before any attempt
2800 to write a maildirsize file.
2801
2802 . The quota value in the file is just a cache; if the quota is changed in
2803 the transport, the new value overrides.
2804
2805 . A regular expression is available for excluding directories from the
2806 count.
2807
280820. The autoreply transport checks the characters in options that define the
2809 message's headers; it allows continued headers, but it was checking with
2810 isspace() after an embedded newline instead of explicitly looking for a
2811 space or a tab.
2812
281321. If all the "regular" hosts to which an address was routed had passed their
2814 expiry times, and had not reached their retry times, the address was
2815 bounced, even if fallback hosts were defined. Now Exim should go on to try
2816 the fallback hosts.
2817
281822. Increased buffer sizes in the callout code from 1024 to 4096 to match the
2819 equivalent code in the SMTP transport. Some hosts send humungous responses
2820 to HELO/EHLO, more than 1024 it seems.
2821
282223. Refactoring: code in filter.c used (void *) for "any old type" but this
2823 gives compiler warnings in some environments. I've now done it "properly",
2824 using a union.
2825
282624. The replacement for inet_ntoa() that is used with gcc on IRIX systems
2827 (because of problems with the built-in one) was declared to return uschar *
2828 instead of char *, causing compiler failure.
2829
283025. Fixed a file descriptor leak when processing alias/forward files.
2831
283226. Fixed a minor format string issue in dbfn.c.
2833
283427. Typo in exim.c: ("dmbnz" for "dbmnz").
2835
283628. If a filter file refered to $h_xxx or $message_headers, and the headers
2837 contained RFC 2047 "words", Exim's memory could, under certain conditions,
2838 become corrupted.
2839
284029. When a sender address is verified, it is cached, to save repeating the test
2841 when there is more than one recipient in a message. However, when the
2842 verification involves a callout, it is possible for different callout
2843 options to be set for different recipients. It is too complicated to keep
2844 track of this in the cache, so now Exim always runs a verification when a
2845 callout is required, relying on the callout cache for the optimization.
2846 The overhead is duplication of the address routing, but this should not be
2847 too great.
2848
284930. Fixed a bug in callout caching. If a RCPT command caused the sender address
2850 to be verified with callout=postmaster, and the main callout worked but the
2851 postmaster check failed, the verification correctly failed. However, if a
2852 subsequent RCPT command asked for sender verification *without* the
2853 postmaster check, incorrect caching caused this verification also to fail,
2854 incorrectly.
2855
285631. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
2857 it was not caching the DNS options (qualify_single, search_parents) that
2858 were used when the lookup failed. A subsequent lookup with different
2859 options therefore always gave the same answer, though there were cases
2860 where it should not have. (Example: a "domains = !$mx_any" option on a
2861 dnslookup router: the "domains" option is always processed without any
2862 widening, but the router might have qualify_single set.) Now Exim uses the
2863 cached value only when the same options are set.
2864
286532. Added John Jetmore's "exipick" utility to the distribution.
2866
286733. GnuTLS: When an attempt to start a TLS session fails for any reason other
2868 than a timeout (e.g. a certificate is required, and is not provided), an
2869 Exim server now closes the connection immediately. Previously it waited for
2870 the client to close - but if the client is SSL, it seems that they each
2871 wait for each other, leading to a delay before one of them times out.
2872
287334: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
2874 maintained 0.8.x compatibility because I don't think many are using it, and
2875 it is clearly obsolete.
2876
287735. Added TLS support for CRLs: a tls_crl global option and one for the smtp
2878 transport.
2879
288036. OpenSSL: $tls_certificate_verified was being set to 1 even if the
2881 client certificate was expired. A simple patch fixes this, though I don't
2882 understand the full logic of why the verify callback is called multiple
2883 times.
2884
288537. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
2886 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
2887 which causes problems with some clients (such as the Certicom SSL Plus
2888 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
2889 disables the coutermeasure allowing Eudora to connect."
2890
289138. Exim was not checking that a write() to a log file succeeded. This could
2892 lead to Bad Things if a log got too big, in particular if it hit a file
2893 size limit. Exim now panics and dies if it cannot write to a log file, just
2894 as it does if it cannot open a log file.
2895
289639. Modified OS/Makefile-Linux so that it now contains
2897
2898 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
2899
2900 The two -D definitions ensure that Exim is compiled with large file
2901 support, which makes it possible to handle log files that are bigger than
2902 2^31.
2903
290440. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
2905 instance) a domain was checked against a named list that involved a lookup,
2906 causing $domain_data to be set, then another domain was checked against the
2907 same list, then the first domain was re-checked, the value of $domain_data
2908 after the final check could be wrong. In particular, if the second check
2909 failed, it could be set empty. This bug probably also applied to
2910 $localpart_data.
2911
291241. The strip_trailing_dot option was not being applied to the address given
2913 with the -f command-line option.
2914
291542. The code for reading a message's header from the spool was incrementing
2916 $received_count, but never initializing it. This meant that the value was
2917 incorrect (doubled) while delivering a message in the same process in which
2918 it was received. In the most common configuration of Exim, this never
2919 happens - a fresh exec is done - but it can happen when
2920 deliver_drop_privilege is set.
2921
292243. When Exim logs an SMTP synchronization error - client data sent too soon -
2923 it now includes up to 150 characters of the unexpected data in the log
2924 line.
2925
292644. The exim_dbmbuild utility uses fixed size buffers for reading input lines
2927 and building data strings. The size of both of these buffers was 10 000
2928 bytes - far larger than anybody would *ever* want, thought I. Needless to
2929 say, somebody hit the limit. I have increased the maximum line length to
2930 20 000 and the maximum data length of concatenated lines to 100 000. I have
2931 also fixed two bugs, because there was no checking on these buffers. Tsk,
2932 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
2933 buffer is too small.
2934
293545. The exim_dbmbuild utility did not support quoted keys, as Exim does in
2936 lsearch lookups. Now it does.
2937
293846. When parsing a route_list item in a manualroute router, a fixed-length
2939 buffer was used for the list of hosts. I made this 1024 bytes long,
2940 thinking that nobody would ever have a list of hosts that long. Wrong.
2941 Somebody had a whole pile of complicated expansion conditions, and the
2942 string was silently truncated, leading to an expansion error. It turns out
2943 that it is easier to change to an unlimited length (owing to other changes
2944 that have happened since this code was originally written) than to build
2945 structure for giving a limitation error. The length of the item that
2946 expands into the list of hosts is now unlimited.
2947
294847. The lsearch lookup could not handle data where the length of text line was
2949 more than 4095 characters. Such lines were truncated, leading to shortened
2950 data being returned. It should now handle lines of any length.
2951
295248. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
2953 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
2954 ACL").
2955
295649. Cosmetic tidy to scripts like exicyclog that are generated by globally
2957 replacing strings such as BIN_DIRECTORY in a source file: the replacement
2958 no longer happens in comment lines. A list of replacements is now placed
2959 at the head of all of the source files, except those whose only change is
2960 to replace PERL_COMMAND in the very first #! line.
2961
296250. Replaced the slow insertion sort in queue.c, for sorting the list of
2963 messages on the queue, with a bottom-up merge sort, using code contributed
2964 by Michael Haardt. This should make operations like -bp somewhat faster on
2965 large queues. It won't affect queue runners, except when queue_run_in_order
2966 is set.
2967
296851. Installed eximstats 1.31 in the distribution.
2969
297052. Added support for SRV lookups to the dnslookup router.
2971
297253. If an ACL referred to $message_body or $message_body_end, the value was not
2973 reset for any messages that followed in the same SMTP session.
2974
297554. The store-handling optimization for building very long strings was not
2976 differentiating between the different store pools. I don't think this
2977 actually made any difference in practice, but I've tidied it.
2978
297955. While running the routers to verify a sender address, $sender_address
2980 was still set to the sender address. This is wrong, because when routing to
2981 send a bounce to the sender, it would be empty. Therefore, I have changed
2982 it so that, while verifying a sender address, $sender_address is set to <>.
2983 (There is no change to what happens when verifying a recipient address.)
2984
298556. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
2986 target A or AAAA records (if not already returned) without resetting the
2987 qualify_single or search_parents options of the DNS resolver. These are
2988 inappropriate in this case because the targets of MX and SRV records must
2989 be FQDNs. A broken DNS record could cause trouble if it happened to have a
2990 target that, when qualified, matched something in the local domain. These
2991 two options are now turned off when doing these lookups.
2992
299357. It seems that at least some releases of Reiserfs (which does not have the
2994 concept of a fixed number of inodes) returns zero and not -1 for the
2995 number of available inodes. This interacted badly with check_spool_inodes,
2996 which assumed that -1 was the "no such thing" setting. What I have done is
2997 to check that the total number of inodes is greater than zero before doing
2998 the test of how many are available.
2999
300058. When a "warn" ACL statement has a log_message modifier, the message is
3001 remembered, and not repeated. This is to avoid a lot of repetition when a
3002 message has many recipients that cause the same warning to be written.
3003 Howewer, Exim was preserving the list of already written lines for an
3004 entire SMTP session, which doesn't seem right. The memory is now reset if a
3005 new message is started.
3006
300759. The "rewrite" debugging flag was not showing the result of rewriting in the
3008 debugging output unless log_rewrite was also set.
3009
301060. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3011 of (int)(handle) when we know that handle contains (void *)(-1).
3012
301361. The Exim daemon panic-logs an error return when it closes the incoming
3014 connection. However "connection reset by peer" seems to be common, and
3015 isn't really an error worthy of noting specially, so that particular error
3016 is no long logged.
3017
301862. When Exim is trying to find all the local interfaces, it used to panic and
3019 die if the ioctl to get the interface flags failed. However, it seems that
3020 on at least one OS (Solaris 9) it is possible to have an interface that is
3021 included in the list of interfaces, but for which you get a failure error
3022 for this call. This happens when the interface is not "plumbed" into a
3023 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3024 failure of the "get flags" call assumes that the interface is down.
3025
302663. Added a ${eval10: operator, which assumes all numbers are decimal. This
3027 makes life easier for people who are doing arithmetic on fields extracted
3028 from dates, where you often get leading zeros that should not be
3029 interpreted as octal.
3030
303164. Added qualify_domain to the redirect router, to override the global
3032 setting.
3033
303465. If a pathologically long header line contained very many addresses (the
3035 report of this problem mentioned 10 000) and each of them was rewritten,
3036 Exim could use up a very large amount of memory. (It kept on making new
3037 copies of the header line as it rewrote, and never released the old ones.)
3038 At the expense of a bit more processing, the header rewriting function has
3039 been changed so that it no longer eats memory in this way.
3040
304166. The generation of the Received: header has been moved from the time that a
3042 message starts to be received, to the time that it finishes. The timestamp
3043 in the Received: header should now be very close to that of the <= log
3044 line. There are two side-effects of this change:
3045
3046 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3047 logged header lines no longer include the local Received: line, because
3048 it has not yet been created. The same applies to a copy of the message
3049 that is returned to a non-SMTP sender when a message is rejected.
3050
3051 (b) When a filter file is tested using -bf, no additional Received: header
3052 is added to the test message. After some thought, I decided that this
3053 is a bug fix.
3054
3055 This change does not affect the value of $received_for. It is still set
3056 after address rewriting, but before local_scan() is called.
3057
305867. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3059
306068. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3061 gave an unhelpful panic error message, and a defer error. I have managed to
3062 change this behaviour so that it now rejects any supplied certificate,
3063 which seems right, as the list of acceptable certificates is empty.
3064
306569. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3066 gave an unhelpful defer error. I have not managed to make this reject any
3067 supplied certificates, but the error message it gives is "no certificate
3068 supplied", which is not helpful.
3069
307070. exigrep's output now also includes lines that are not associated with any
3071 message, but which match the given pattern. Implemented by a patch from
3072 Martin Sluka, which also tidied up the Perl a bit.
3073
307471. Recipient callout verification, like sender verification, was using <> in
3075 the MAIL FROM command. This isn't really the right thing, since the actual
3076 sender may affect whether the remote host accepts the recipient or not. I
3077 have changed it to use the actual sender in the callout; this means that
3078 the cache record is now keyed on a recipient/sender pair, not just the
3079 recipient address. There doesn't seem to be a real danger of callout loops,
3080 since a callout by the remote host to check the sender would use <>.
3081 [SEE ABOVE: changed after hitting problems.]
3082
308372. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3084 temporary errors. However, in the case of such a code being given after
3085 the end of a data transmission (i.e. after ".") Exim was failing to write
3086 a retry record for the message. (Yes, there was some broken host that was
3087 actually sending 8xx at this point.)
3088
308973. An unknown lookup type in a host list could cause Exim to panic-die when
3090 the list was checked. (An example that provoked this was putting <; in the
3091 middle of a list instead of at the start.) If this happened during a DATA
3092 ACL check, a -D file could be left lying around. This kind of configuration
3093 error no longer causes Exim to die; instead it causes a defer errror. The
3094 incident is still logged to the main and panic logs.
3095
309674. Buglet left over from Exim 3 conversion. The message "too many messages
3097 in one connection" was written to the rejectlog but not the mainlog, except
3098 when address rewriting (yes!) was being logged.
3099
310075. Added write_rejectlog option.
3101
310276. When a system filter was run not as root (that is, when system_filter_user
3103 was set), the values of the $n variables were not being returned to the
3104 main process; thus, they were not subsequently available in the $sn
3105 variables.
3106
310777. Added +return_path_on_delivery log selector.
3108
310978. A connection timeout was being treated differently from recipients deferred
3110 when testing hosts_max_try with a message that was older than the host's
3111 retry timeout. (The host should not be counted, thus allowing all hosts to
3112 be tried at least once before bouncing.) This may have been the cause of an
3113 occasionally reported bug whereby a message would remain on the queue
3114 longer than the retry timeout, but would be bounced if a delivery was
3115 forced. I say "may" because I never totally pinned down the problem;
3116 setting up timeout/retry tests is difficult. See also the next item.
3117
311879. The ultimate address timeout was not being applied to errors that involved
3119 a combination of host plus message (for example, a timeout on a MAIL
3120 command). When an address resolved to a number of possible hosts, and they
3121 were not all tried for each delivery (e.g. because of hosts_max_try), a
3122 message could remain on the queue longer than the retry timeout.
3123
312480. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3125 Haardt.
3126
312781. Fixed an obscure SMTP outgoing bug which required at least the following
3128 conditions: (a) there was another message waiting for the same server;
3129 (b) the server returned 5xx to all RCPT commands in the first message so
3130 that the message was not completed; (c) the server dropped the connection
3131 or gave a negative response to the RSET that Exim sends to abort the
3132 transaction. The observed case was a dropped connection after DATA that had
3133 been sent in pipelining mode. That is, the server had advertised PIPELINING
3134 but was not implementing it correctly. The effect of the bug was incorrect
3135 behaviour, such as trying another host, and this could lead to a crash.
3136
3137
3138Exim version 4.30
3139-----------------
3140
3141 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3142 and daemon.c were passed as pointers to ints; they should have been
3143 pointers to socklen_t variables (which are typically unsigned ints).
3144
3145 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3146 fixed.
3147
3148 3. Fixed a really odd bug that affected only the testing scheme; patching a
3149 certain fixed string in the binary changed the value of another string that
3150 happened to be identical to the end of the original first string.
3151
3152 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3153 name", it returns that address as the IP address. On some operating
3154 systems (e.g. Solaris), it also passes back the IP address string as the
3155 "host name". However, on others (e.g. Linux), it passes back an empty
3156 string. Exim wasn't checking for this, and was changing the host name to an
3157 empty string, assuming it had been canonicized.
3158
3159 5. Although rare, it is permitted to have more than one PTR record for a given
3160 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3161 all the names associated with an address, because they do in Solaris.
3162 However, it seems that they do not in Linux for data that comes from the
3163 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3164 I found this out when I moved to a new Linux workstation and tried to run
3165 the Exim test suite.
3166
3167 To get round this problem I have changed the code so that it now does its
3168 own call to the DNS to look up PTR records when searching for a host name.
3169 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3170 addresses that are only in /etc/hosts are still found.
3171
3172 This behaviour is, however, controlled by an option called host_lookup_
3173 order, which defaults to "bydns:byaddr". If people want to use the other
3174 order, or indeed, just use one or the other means of lookup, they can
3175 specify it in this variable.
3176
3177 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3178 some operating systems, this comes back from gethostbyaddr() as an empty
3179 string, and this is what Exim used to test for. However, it seems that in
3180 other systems, "." is yielded. Exim now tests for this case too.
3181
3182 7. The values of check_spool_space and check_log_space are now held internally
3183 as a number of kilobytes instead of an absolute number of bytes. If a
3184 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3185 kilobyte. This means that much larger values can be stored.
3186
3187 8. Exim monitor: an attempt to get the action menu when not actually pointing
3188 at a message produces an empty menu entitled "No message selected". This
3189 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3190 no entries in it ("Shell widget menu has zero width and/or height"). So I
3191 have added a single, blank menu entry in this case.
3192
3193 9. Added ${quote_local_part.
3194
319510. MIME decoding is now applied to the contents of Subject: header lines when
3196 they are logged.
3197
319811. Now that a reference to $sender_host_address automatically causes a reverse
3199 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3200 host lookup before query-style lookups in lists that might use this
3201 variable. This has therefore been abolished, and the "net-" prefix is no
3202 longer necessary for query-style lookups.
3203
320412. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3205 have been a typo for LFLAGS, so it has been changed.
3206
320713. The install script calls Exim with "-C /dev/null" in order to find the
3208 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3209 to be output. Howeve, since Exim outputs its version number before the
3210 error, it didn't break the script. It just looked ugly. I fixed this by
3211 always allowing "-C /dev/null" if the caller is root.
3212
321314. Ignore overlarge ACL variable number when reading spool file - insurance
3214 against a later release with more variables having written the file.
3215
321615. The standard form for an IPv6 address literal was being rejected by EHLO.
3217 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3218 this, as well as the form without the "IPv6" on the front.
3219
322016. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3221 OS/Makefile-Darwin file.
3222
322317. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3224 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3225
322618. After change 4.21/52, "%ld" was used to format the contents of the $inode
3227 variable. However, some OS use ints for inodes. I've added cast to long int
3228 to get rid of the compiler warning.
3229
323019. I had forgotten to lock out "/../" in configuration file names when
3231 ALT_CONFIG_PREFIX was set.
3232
323320. Routers used for verification do not need to specify transports. However,
3234 if such a router generated a host list, and callout was configured, Exim
3235 crashed, because it could not find a port number from the (non-existent)
3236 transport. It now assumes port 25 in this circumstance.
3237
323821. Added the -t option to exigrep.
3239
324022. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3241 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3242 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3243 them is set, LOOKUP_LSEARCH is forced.
3244
324523. "exim -bV" now outputs a list of lookups that are included in the binary.
3246
324724. Added sender and host information to the "rejected by local_scan()" log
3248 line; previously there was no indication of these.
3249
325025. Added .include_if_exists.
3251
325226. Change 3.952/11 added an explicit directory sync on top of a file sync for
3253 Linux. It turns out that not all file systems support this. Apparently some
3254 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3255 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3256 not supported on the file descriptor, is now ignored when Exim is trying to
3257 sync a directory. This applies only to Linux.
3258
325927. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3260
326128. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3262 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3263 this.
3264
326529. Added support for maildirsize files from supplied patch (modified a bit).
3266
326730. The use of :fail: followed by an empty string could lead Exim to respond to
3268 sender verification failures with (e.g.):
3269
3270 550 Verification failed for <xxx>
3271 550 Sender verify failed
3272
3273 where the first response line was missing the '-' that indicates it is not
3274 the final line of the response.
3275
327631. The loop for finding the name of the user that called Exim had a hardwired
3277 limit of 10; it now uses the value of finduser_retries, which is used for
3278 all other user lookups.
3279
328032. Added $received_count variable, available in data and not_smtp ACLs, and at
3281 delivery time.
3282
328333. Exim was neglecting to zero errno before one call of strtol() when
3284 expanding a string and expecting an integer value. On some systems this
3285 resulted in spurious "integer overflow" errors. Also, it was casting the
3286 result into an int without checking.
3287
328834. Testing for a connection timeout using "timeout_connect" in the retry rules
3289 did not work. The code looks as if it has *never* worked, though it appears
3290 to have been documented since at least releast 1.62. I have made it work.
3291
329235. The "timeout_DNS" error in retry rules, also documented since at least
3293 1.62, also never worked. As it isn't clear exactly what this means, and
3294 clearly it isn't a major issue, I have abolished the feature by treating it
3295 as "timeout", and writing a warning to the main and panic logs.
3296
329736. The display of retry rules for -brt wasn't always showing the error code
3298 correctly.
3299
330037. Added new error conditions to retry rules: timeout_A, timeout_MX,
3301 timeout_connect_A, timeout_connect_MX.
3302
330338. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3304 to the empty sender.
3305
330639. The daemon was not analysing the content of -oX till after it had closed
3307 stderr and disconnected from the controlling terminal. This meant that any
3308 syntax errors were only noted on the panic log, and the return code from
3309 the command was 0. By re-arranging the code a little, I've made the
3310 decoding happen first, so such errors now appear on stderr, and the return
3311 code is 1. However, the actual setting up of the sockets still happens in
3312 the disconnected process, so errors there are still only recorded on the
3313 panic log.
3314
331540. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3316 connections (as happens on some IP stacks) was logged at start up time as
3317 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3318 it from "IPv6 and IPv4", which means that two separate sockets are being
3319 used.
3320
332141. The debug output for gethostbyname2() or getipnodebyname() failures now
3322 says whether AF_INET or AF_INET6 was passed as an argument.
3323
332442. Exiwhat output was messed up when time zones were included in log
3325 timestamps.
3326
332743. Exiwhat now gives more information about the daemon's listening ports,
3328 and whether -tls-on-connect was used.
3329
333044. The "port" option of the smtp transport is now expanded.
3331
333245. A "message" modifier in a "warn" statement in a non-message ACL was being
3333 silently ignored. Now an error message is written to the main and panic
3334 logs.
3335
333646. There's a new ACL modifier called "logwrite" which writes to a log file
3337 as soon as it is encountered.
3338
333947. Added $local_user_uid and $local_user_gid at routing time.
3340
334148. Exim crashed when trying to verify a sender address that was being
3342 rewritten to "<>".
3343
334449. Exim was recognizing only a space character after ".include". It now also
3345 recognizes a tab character.
3346
334750. Fixed several bugs in the Perl script that creates the exim.8 man page by
3348 extracting the relevant information from the specification. The man page no
3349 longer contains scrambled data for the -d option, and I've added a section
3350 at the front about calling Exim under different names.
3351
335251. Added "extra_headers" argument to the "mail" command in filter files.
3353
335452. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
3355 crash.
3356
335753. Installed eximstats 1.29.
3358
335954. Added transport_filter_timeout as a generic transport option.
3360
336155. Exim no longer adds an empty Bcc: header to messages that have no To: or
3362 Cc: header lines. This was required by RFC 822, but it not required by RFC
3363 2822.
3364
336556. Exim used to add From:, Date:, and Message-Id: header lines to any
3366 incoming messages that did not have them. Now it does so only if the
3367 message originates locally, that is, if there is no associated remote host
3368 address. When Resent- header lines are present, this applies to the Resent-
3369 lines rather than the non-Resent- lines.
3370
337157. Drop incoming SMTP connection after too many syntax or protocol errors. The
3372 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
3373
337458. Messages for configuration errors now include the name of the main
3375 configuration file - useful now that there may be more than one file in a
3376 list (.included file names were always shown).
3377
337859. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
3379 for those rare installations that do not start the daemon as root or run it
3380 setuid root. I've cut out the call to initgroups() if the daemon is not
3381 root at that time.
3382
338360. The Exim user and group can now be bound into the binary as text strings
3384 that are looked up at the start of Exim's processing.
3385
338661. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
3387
338862. Added $mailstore_basename variable.
3389
339063. Installed patch to sieve.c from Michael Haardt.
3391
339264. When Exim failed to open the panic log after failing to open the main log,
3393 the original message it was trying to log was written to stderr and debug
3394 output, but if they were not available (the usual case in production), it
3395 was lost. Now it is written to syslog before the two lines that record the
3396 failures to open the logs.
3397
339865. Users' Exim filters run in subprocesses under the user's uid. It is
3399 possible for a "deliver" command or an alias in a "personal" command to
3400 provoke an address rewrite. If logging of address rewriting is configured,
3401 this fails because the process is not running as root or exim. There may be
3402 a better way of dealing with this, but for the moment (because 4.30 needs
3403 to be released), I have disabled address rewrite logging when running a
3404 filter in a non-root, non-exim process.
3405
3406
3407Exim version 4.24
3408-----------------
3409
3410 1. The buildconfig auxiliary program wasn't quoting the value set for
3411 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
3412 not defined. This bug was masked in 4.22 by the effect that was fixed in
3413 change 4.23/1.
3414
3415 2. Some messages that were rejected after a message id was allocated were
3416 shown as "incomplete" by exigrep. It no longer does this for messages that
3417 are rejected by local_scan() or the DATA or non-SMTP ACLs.
3418
3419 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
3420 have allow_domain_literals set, the ID did not get logged in the <= line.
3421 Domain literals are now always recognized in Message-ID: header lines.
3422
3423 4. The first argument for a ${extract expansion item is the key name or field
3424 number. Leading and trailing spaces in this item were not being ignored,
3425 causing some misleading effects.
3426
3427 5. When deliver_drop_privilege was set, single queue runner processes started
3428 manually (i.e. by the command "exim -q") or by the daemon (which uses the
3429 same command in the process it spins off) were not dropping privilege.
3430
3431 6. When the daemon running as "exim" started a queue runner, it always
3432 re-executed Exim in the spun-off process. This is a waste of effort when
3433 deliver_drop_privilege is set. The new process now just calls the
3434 queue-runner function directly.
3435
3436
3437Exim version 4.23
3438-----------------
3439
3440 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
3441 HEADERS_CHARSET.
3442
3443 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
3444 ignored. Though the use of -oP was forcing the writing of a pid file, it
3445 was always written to the default place.
3446
3447 3. If the message "no IP address found for host xxxx" is generated during
3448 incoming verification, it is now followed by identification of the incoming
3449 connection (so you can more easily find what provoked it).
3450
3451 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
3452
3453 5. Added some features to "harden" Exim a bit more against certain attacks:
3454
3455 (a) There is now a build-time option called FIXED_NEVER_USERS that can
3456 be put in Local/Makefile. This is like the never_users runtime option,
3457 but it cannot be overridden. The default setting is "root".
3458
3459 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
3460 prefix string with which any file named in a -C command line option
3461 must start.
3462
3463 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
3464 is retained for -C and -D only if the caller of Exim is root. Without
3465 it, the exim user may also use -C and -D and retain privilege.
3466
3467 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
3468 command line option is disabled.
3469
3470 6. Macro names set by the -D option must start with an upper case letter, just
3471 like macro names defined in the configuration file.
3472
3473 7. Added "dereference=" facility to LDAP.
3474
3475 8. Two instances of the typo "uknown" in the source files are fixed.
3476
3477 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
3478 the Configure-Makefile script screwed up while processing it.
3479
348010. Incorporated PCRE 4.4.
3481
348211. The SMTP synchronization check was not operating right at the start of an
3483 SMTP session. For example, it could not catch a HELO sent before the client
3484 waited for the greeting. There is now a check for outstanding input at the
3485 point when the greeting is written. Because of the duplex, asynchronous
3486 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
3487 way, but not yet received, when the check is performed.
3488
348912. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
3490 on TCP/IP sockets, because this apparently causes some broken clients to
3491 timeout.
3492
349313. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
3494 unchanged) from the Cygwin maintainer.
3495
349614. The code for -bV that shows what is in the binary showed "mbx" when maildir
3497 was supported instead of testing for mbx. Effectively a typo.
3498
349915. The spa authenticator server code was not checking that the input it
3500 received was valid base64.
3501
350216. The debug output line for the "set" modifier in ACLs was not showing the
3503 name of the variable that was being set.
3504
350517. Code tidy: the variable type "vtype_string" was never used. Removed it.
3506
350718. Previously, a reference to $sender_host_name did not cause a DNS reverse
3508 lookup on its own. Something else was needed to trigger the lookup. For
3509 example, a match in host_lookup or the need for a host name in a host list.
3510 Now, if $sender_host_name is referenced and the host name has not yet been
3511 looked up, a lookup is performed. If the lookup fails, the variable remains
3512 empty, and $host_lookup_failed is set to "1".
3513
351419. Added "eqi" as a case-independent comparison operator.
3515
351620. The saslauthd authentication condition could segfault if neither service
3517 nor realm was specified.
3518
351921. If an overflowing value such as "2048M" was set for message_size_limit, the
3520 error message that was logged was misleading, and incoming SMTP
3521 connections were dropped. The message is now more accurate, and temporary
3522 errors are given to SMTP connections.
3523
352422. In some error situations (such as 21 above) Exim rejects all SMTP commands
3525 (except RSET) with a 421 error, until QUIT is received. However, it was
3526 failing to send a response to QUIT.
3527
352823. The HELO ACL was being run before the code for helo_try_verify_hosts,
3529 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
3530 ACL is now run after the helo_try_verify_hosts code.
3531
353224. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
3533 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
3534 case-independent, so other case variants are also recognized). Apparently
3535 some systems use these upper case variants.
3536
353725. If more than two messages were waiting for the same host, and a transport
3538 filter was specified for the transport, Exim sent two messages over the
3539 same TCP/IP connection, and then failed with "socket operation on non-
3540 socket" when it tried to send the third.
3541
354226. Added Exim::debug_write and Exim::log_write for embedded Perl use.
3543
354427. The extern definition of crypt16() in expand.c was not being excluded when
3545 the OS had its own crypt16() function.
3546
354728. Added bounce_return_body as a new option, and bounce_return_size_limit
3548 as a preferred synonym for return_size_limit, both as an option and as an
3549 expansion variable.
3550
355129. Added LIBS=-liconv to OS/Makefile-OSF1.
3552
355330. Changed the default configuration ACL to relax the local part checking rule
3554 for addresses that are not in any local domains. For these addresses,
3555 slashes and pipe symbols are allowed within local parts, but the sequence
3556 /../ is explicitly forbidden.
3557
355831. SPA server authentication was not clearing the challenge buffer before
3559 using it.
3560
356132. log_message in a "warn" ACL statement was writing to the reject log as
3562 well as to the main log, which contradicts the documentation and doesn't
3563 seem right (because no rejection is happening). So I have stopped it.
3564
356533. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
3566 However, I am unable to do any testing of this.
3567
356834. Fixed an infelicity in the appendfile transport. When checking directories
3569 for a mailbox, to see if any needed to be created, it was accidentally
3570 using path names with one or more superfluous leading slashes; tracing
3571 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
3572
357335. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
3574 contents are added to the log line that is written for every discarded
3575 recipient. (Previously a log_message setting was ignored.)
3576
357736. The ${quote: operator now quotes the string if it is empty.
3578
357937. The install script runs exim in order to find its version number. If for
3580 some reason other than non-existence or emptiness, which it checks, it
3581 could not run './exim', it was installing it with an empty version number,
3582 i.e. as "exim-". This error state is now caught, and the installation is
3583 aborted.
3584
358538. An argument was missing from the function that creates an error message
3586 when Exim fails to connect to the socket for saslauthd authentication.
3587 This could cause Exim to crash, or give a corrupted message.
3588
358939. Added isip, isip4, and isip6 to ${if conditions.
3590
359140. The ACL variables $acl_xx are now saved with the message, and can be
3592 accessed later in routers, transports, and filters.
3593
359441. The new lookup type nwildlsearch is like wildlsearch, except that the key
3595 strings in the file are not string-expanded.
3596
359742. If a MAIL command specified a SIZE value that was too large to fit into an
3598 int variable, the check against message_size_limit failed. Such values are
3599 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
3600 day this will have to be increased, but I don't think I want to be around
3601 when emails are that large.
3602
3603
3604
3605Exim version 4.22
3606-----------------
3607
3608 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
3609 iconv() is not standard in FreeBSD.
3610
3611 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with
3612 IPv6 enabled. The observed symptom was a segmentation fault on return from
3613 the function os_common_find_running_interfaces() in src/os.c.
3614
3615 3. In the check_special_case() function in daemon.c I had used "errno" as an
3616 argument name, which causes warnings on some systems. This was basically a
3617 typo, since it was named "eno" in the comments!
3618
3619 4. The code that waits for the clock to tick (at a resolution of some fraction
3620 of a second) so as to ensure message-id uniqueness was always waiting for
3621 at least one whole tick, when it could have waited for less. [This is
3622 almost certainly not relevant at current processor speeds, where it is
3623 unlikely to ever wait at all. But we try to future-proof.]
3624
3625 5. The function that sleeps for a time interval that includes fractions of a
3626 second contained a race. It did not block SIGALRM between setting the
3627 timer, and suspending (a couple of lines later). If the interval was short
3628 and the sigsuspend() was delayed until after it had expired, the suspension
3629 never ended. On busy systems this could lead to processes getting stuck for
3630 ever.
3631
3632 6. Some uncommon configurations may cause a lookup to happen in a queue runner
3633 process, before it forks any delivery processes. The open lookup caching
3634 mechanism meant that the open file or database connection was passed into
3635 the delivery process. The problem was that delivery processes always tidy
3636 up cached lookup data. This could cause a problem for the next delivery
3637 process started by the queue runner, because the external queue runner
3638 process does not know about the closure. So the next delivery process
3639 still has data in the lookup cache. In the case of a file lookup, there was
3640 no problem because closing a file descriptor in a subprocess doesn't affect
3641 the parent. However, if the lookup was caching a connection to a database,
3642 the connection was closed, and the second delivery process was likely to
3643 see errors such as "PGSQL: query failed: server closed the connection
3644 unexpectedly". The problem has been fixed by closing all cached lookups
3645 in a queue runner before running a delivery process.
3646
3647 7. Compiler warning on Linux for the second argument of iconv(), which doesn't
3648 seem to have the "const" qualifier which it has on other OS. I've
3649 parameterised it.
3650
3651 8. Change 4.21/2 was too strict. It is only if there