Fixed a number of test suite problems as reported (and partly patched)
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
e22ca4ac 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.380 2006/07/21 16:48:42 jetmore 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
5dff5817
PH
96PH/17 Added an extra condition to the default value of delay_warning_condition
97 so that it is now:
98
99 ${if or {
100 { match{$h_precedence:}{(?i)bulk|list|junk} }
101 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }
102 }{no}{yes}}
103
104 The Auto-Submitted: header is standardised, whereas I don't think
105 Precedence: ever was.
106
d8fe1c03
PH
107PH/18 Refactored debugging code in route_finduser() to show more information,
108 in particular, the error code if getpwnam() issues one.
109
16282d2b
PH
110PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
111 This is apparently needed in addition to the PH/07 change above to avoid
112 any possible encoding problems.
113
35d40a98
PH
114PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
115 but not after initializing Perl.
116
034d99ab
PH
117PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
118 output them only if debugging. By default they are written stderr,
119 apparently, which is not desirable.
120
6ec97b1b
PH
121PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
122 queries.
123
e22ca4ac
JJ
124JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
125 --not options
126
127JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
128
c59f5781 129
c887c79e
TF
130Exim version 4.62
131-----------------
132
133TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
134 other effects) broke the use of negated acl sub-conditions.
135
1cce3af8
PH
136PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
137 patch).
138
afb3eaaf
PH
139PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
140 "Deny" causes Exim to reject the incoming connection with a 554 error.
141 Unfortunately, if there is a major crisis, such as a disk failure,
142 tcp-wrappers gives "deny", whereas what one would like would be some
143 kind of temporary error. A kludge has been added to help with this.
144 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
145 554 error is used if errno is still zero or contains ENOENT (which occurs
146 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
147 451 error is used.
148
e173618b
PH
149PH/03 Add -lutil to the default FreeBSD LIBS setting.
150
dd16e114
PH
151PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
152 errors. Otherwise a message that provokes a temporary error (when other
153 messages do not) can cause a whole host to time out.
154
f7fd3850
PH
155PH/05 Batch deliveries by appendfile and pipe transports did not work when the
156 addresses were routed directly to files or pipes from a redirect router.
157 File deliveries just didn't batch; pipe deliveries might have suffered
158 odd errors.
159
d87df92c
PH
160PH/06 A failure to get a lock for a hints database would erroneously always say
161 "Failed to get write lock", even when it was really a read lock.
162
7e9f683d
PH
163PH/07 The appendfile transport was creating MBX lock files with a fixed mode
164 of 0600. This has been changed to use the value of the lockfile_mode
165 option (which defaults to 0600).
166
bfad5236
PH
167PH/08 Applied small patch from the Sieve maintainer.
168
01c490df
PH
169PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
170 folder from quota calculations, a direct delivery into this folder messed
171 up the contents of the maildirsize file. This was because the regex was
172 used only to exclude .Trash (or whatever) when the size of the mailbox
173 was calculated. There was no check that a delivery was happening into an
174 excluded directory. This bug has been fixed by ignoring all quota
175 processing for deliveries into excluded directories.
176
d6629cdc
PH
177PH/10 Added the maildirfolder_create_regex option to appendfile.
178
1cce3af8 179
214e2000
PH
180Exim version 4.61
181-----------------
182
183PH/01 The code for finding all the local interface addresses on a FreeBSD
184 system running IPv6 was broken. This may well have applied to all BSD
185 systems, as well as to others that have similar system calls. The broken
186 code found IPv4 interfaces correctly, but gave incorrect values for the
187 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
188 that it would not match correctly against @[] and not recognize the IPv6
189 addresses as local.
190
f9daeae0
PH
191PH/02 The ipliteral router was not recognizing addresses of the form user@
192 [ipv6:....] because it didn't know about the "ipv6:" prefix.
193
7e66e54d
PH
194PH/03 Added disable_ipv6.
195
c8ea1597
PH
196PH/04 Changed $reply_address to use the raw form of the headers instead of the
197 decoded form, because it is most often used to construct To: headers
198 lines in autoreplies, and the decoded form may well be syntactically
199 invalid. However, $reply_address has leading white space removed, and all
200 newlines turned into spaces so that the autoreply transport does not
201 grumble.
202
911f6fde
PH
203PH/05 If group was specified without a user on a router, and no group or user
204 was specified on a transport, the group from the router was ignored.
205
47ca6d6c
PH
206PH/06 Increased the number of ACL variables to 20 of each type, and arranged
207 for visible compile-time settings that can be used to change these
208 numbers, for those that want even more. Backwards compatibility with old
209 spool files has been maintained. However, going back to a previous Exim
210 release will lost any variables that are in spool files.
211
ed0e9820
PH
212PH/07 Two small changes when running in the test harness: increase delay when
213 passing a TCP/IP connection to a new process, in case the original
214 process has to generate a bounce, and remove special handling of
215 127.0.0.2 (sic), which is no longer necessary.
216
eff37e47
PH
217PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
218 be the same on different OS.
219
1921d2ea
PH
220PH/09 Moved a debug statement in filter processing to avoid a race problem when
221 testing.
222
b3f69ca8
JJ
223JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
224 whether --show-vars was specified or not
225
226JJ/02 exipick: Added support for new ACL variable spool format introduced
227 in 4.61-PH/06
228
424a1c63
PH
229PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
230 syntactically invalid From: or Reply-to: line, and a filter used this to
231 generate an autoreply, and therefore failed to obtain an address for the
232 autoreply, Exim could try to deliver to a non-existent relative file
233 name, causing unrelated and misleading errors. What now happens is that
234 it logs this as a hard delivery error, but does not attempt to create a
235 bounce message.
236
7a100415
PH
237PH/11 The exinext utility has a -C option for testing purposes, but although
238 the given file was scanned by exinext itself; it wasn't being passed on
239 when Exim was called.
240
19b9dc85
PH
241PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
242 an end-of-file indication when reading a command response.
243
309bd837
PH
244PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
245 compiled. In many other places in Exim, IPv6 addresses are always
246 recognized, so I have changed this. It also means that IPv4 domain
247 literals of the form [IPV4:n.n.n.n] are now always recognized.
248
59e82a2a
PH
249PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
250 used if the router is not running as root, for example, when verifying at
251 ACL time, or when using -bh. The debugging output from this situation was
252 non-existent - all you got was a failure to exec. I have made two
253 changes:
254
255 (a) Failures to set uid/gid, the current directory, or a process leader
256 in a subprocess such as that created by queryprogram now generate
257 suitable debugging ouput when -d is set.
258
259 (b) The queryprogram router detects when it is not running as root,
260 outputs suitable debugging information if -d is set, and then runs
261 the subprocess without attempting to change uid/gid.
262
9edc04ce
PH
263PH/15 Minor change to Makefile for building test_host (undocumented testing
264 feature).
265
1349e1e5
PH
266PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
267 additional section of a DNS packet that returns MX or SRV records.
268 Instead, it always explicitly searches for A/AAAA records. This avoids
269 major problems that occur when a DNS server includes only records of one
270 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
271 fixed another bug: if SRV records were looked up and the corresponding
272 address records were *not* found in the additional section, the port
273 values from the SRV records were lost.
274
ea49d0e1
PH
275PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
276 using the correct key (the original address) when searching the retry
277 rules in order to find which one to use for generating the retry hint.
278
064a94c9
PH
279PH/18 If quota_warn_message contains a From: header, Exim now refrains from
280 adding the default one. Similarly, if it contains a Reply-To: header, the
281 errors_reply_to option, if set, is not used.
282
727071f8
PH
283PH/19 When calculating a retry time, Exim used to measure the "time since
284 failure" by looking at the "first failed" field in the retry record. Now
285 it does not use this if it is later than than the arrival time of the
286 message. Instead it uses the arrival time. This makes for better
287 behaviour in cases where some deliveries succeed, thus re-setting the
288 "first failed" field. An example is a quota failure for a huge message
289 when small messages continue to be delivered. Without this change, the
290 "time since failure" will always be short, possible causing more frequent
291 delivery attempts for the huge message than are intended.
dd16e114 292 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 293
f78eb7c6
PH
294PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
295 $1, $2, $3) because the numerical variables can be reset during some
296 expansion items (e.g. "match"), thereby losing the authentication data.
297
21c28500
PH
298PH/21 Make -bV show the size of off_t variables so that the test suite can
299 decide whether to run tests for quotas > 2G.
300
301PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
302 mailbox_size, and mailbox_filecount in the appendfile transport. If a
303 filecount value is greater than 2G or if a quota value is greater than 2G
304 on a system where the size of off_t is not greater than 4, a panic error
305 is given.
306
1688f43b
PH
307PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
308 never match. The debug and -bh output now contains an explicit error
309 message indicating a malformed IPv4 address or mask.
310
311PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
312 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
313 PH/23 above applies.
314
9675b384
PH
315PH/25 Do not write to syslog when running in the test harness. The only
316 occasion when this arises is a failure to open the main or panic logs
317 (for which there is an explicit test).
318
6a3f1455
PH
319PH/26 Added the /no_tell option to "control=freeze".
320
dac79d3e
PH
321PH/27 If a host name lookup failed very early in a connection, for example, if
322 the IP address matched host_lookup and the reverse lookup yielded a name
323 that did not have a forward lookup, an error message of the form "no IP
324 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
325 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 326
5977a0b3
PH
327PH/28 An enabling patch from MH: add new function child_open_exim2() which
328 allows the sender and the authenticated sender to be set when
329 submitting a message from within Exim. Since child_open_exim() is
330 documented for local_scan(), the new function should be too.
331
c91535f3
PH
332PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
333 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
334 results in an empty string is now treated as unset.
335
0d46a8c8
PH
336PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
337
278c6e6c
PH
338PH/31 Added sender_verify_fail logging option.
339
2cbb4081
PH
340PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
341 needed by RFC 822 but not by RFC 2822 was commented out. I have now
342 tidied the source and removed it altogether.
343
3eef829e
PH
344PH/33 When a queue run was abandoned because the load average was too high, a
345 log line was always written; now it is written only if the queue_run log
346 selector is set. In addition, the log line for abandonment now contains
347 information about the queue run such as the pid. This is always present
348 in "start" and "stop" lines but was omitted from the "abandon" line.
349
1ab95fa6
PH
350PH/34 Omit spaces between a header name and the colon in the error message that
351 is given when verify = headers_syntax fails (if there are lots of them,
352 the message gets confusing).
353
230205fc
PH
354PH/35 Change the default for dns_check_names_pattern to allow slashes within
355 names, as there are now some PTR records that contain slashes. This check
356 is only to protect against broken name servers that fall over on strange
357 characters, so the fact that it applies to all lookups doesn't matter.
358
75e0e026
PH
359PH/36 Now that the new test suite is complete, we can remove some of the
360 special code in Exim that was needed for the old test suite. For example,
361 sorting DNS records because real resolvers return them in an arbitrary
362 order. The new test suite's fake resolver always returns records in the
363 same order.
364
365PH/37 When running in the test harness, use -odi for submitted messages (e.g.
366 bounces) except when queue_only is set, to avoid logging races between
367 the different processes.
368
145396a6
PH
369PH/38 Panic-die if .include specifies a non-absolute path.
370
3cd34f13
PH
371PH/39 A tweak to the "H" retry rule from its user.
372
11121d3d
JJ
373JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
374 a label. They prevented compilation on older perls.
375
376JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
377 a warning to be raised on newish perls.
378
379JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
380 on queue. Changes to match documented behaviour of showing count of
381 messages matching specified criteria.
382
8def5aaf
PH
383PH/40 Changed the default ident timeout from 30s to 5s.
384
929ba01c
PH
385PH/41 Added support for the use of login_cap features, on those BSD systems
386 that have them, for controlling the resources used by pipe deliveries.
387
2632889e
PH
388PH/42 The content-scanning code uses fopen() to create files in which to put
389 message data. Previously it was not paying any attention to the mode of
390 the files. Exim runs with umask(0) because the rest of the code creates
391 files with open(), and sets the required mode explicitly. Thus, these
392 files were ending up world-writeable. This was not a big issue, because,
393 being within the spool directory, they were not world-accessible. I have
394 created a function called modefopen, which takes an additional mode
395 argument. It sets umask(777), creates the file, chmods it to the required
396 mode, then resets the umask. All the relevant calls to fopen() in the
397 content scanning code have been changed to use this function.
398
944a9c55
PH
399PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
400 to 24 hours. This avoids potential overflow problems when processing G
401 and H retry rules. I suspect nobody ever tinkers with this value.
402
4a23603b
PH
403PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
404
4730f942
PH
405PH/45 When the plaintext authenticator is running as a client, the server's
406 challenges are checked to ensure they are valid base64 strings. By
407 default, the authentication attempt is cancelled if an invalid string is
408 received. Setting client_ignore_invalid_base64 true ignores these errors.
409 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
410 they are received. Thus, the responses can be made to depend on the
411 challenges. If an invalid string is ignored, an empty string is placed in
412 the variable.
413
30dba1e6
PH
414PH/46 Messages that are created by the autoreply transport now contains a
415 References: header, in accordance with RFCs 2822 and 3834.
416
382afc6b
PH
417PH/47 Added authenticated_sender_force to the smtp transport.
418
a86229cf
PH
419PH/48 The ${prvs expansion was broken on systems where time_t was long long.
420
50c99ba6
PH
421PH/49 Installed latest patch from the Sieve maintainer.
422
d35e429d
PH
423PH/50 When an Exim quota was set without a file count quota, and mailbox_size
424 was also set, the appendfile transport was unnecessarily scanning a
425 directory of message files (e.g. for maildir delivery) to find the count
426 of files (along with the size), even though it did not need this
427 information. It now does the scan only if it needs to find either the
428 size of the count of files.
429
f90d018c
PH
430PH/51 Added ${time_eval: to convert Exim time strings into seconds.
431
75def545
PH
432PH/52 Two bugs concerned with error handling when the smtp transport is
433 used in LMTP mode:
434
435 (i) Exim was not creating retry information for temporary errors given
436 for individual recipients after the DATA command when the smtp transport
437 was used in LMTP mode. This meant that they could be retried too
438 frequently, and not timed out correctly.
439
440 (ii) Exim was setting the flag that allows error details to be returned
441 for LMTP errors on RCPT commands, but not for LMTP errors for individual
442 recipients that were returned after the DATA command.
443
444PH/53 This is related to PH/52, but is more general: for any failing address,
445 when detailed error information was permitted to be returned to the
446 sender, but the error was temporary, then after the final timeout, only
447 "retry timeout exceeded" was returned. Now it returns the full error as
448 well as "retry timeout exceeded".
449
c46782ef
PH
450PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
451 do this, and (what is worse) MTAs that accept it.
452
71fafd95
PH
453PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
454 will now be deprecated.
455
2c5db4fd
PH
456PH/56 New os.c-cygwin from the Cygwin maintainer.
457
9cf6b11a
JJ
458JJ/06 exipick: added --unsorted option to allow unsorted output in all output
459 formats (previously only available in exim formats via -bpr, -bpru,
460 and -bpra. Now also available in native and exiqgrep formats)
461
462JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
463 with very large, slow to parse queues
464
465JJ/08 exipick: added ! as generic prefix to negate any criteria format
466
467JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
468
898d150f
PH
469PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
470 responses to authentication challenges, though it was showing the
471 challenges; (ii) I've removed the CR characters from the debug output for
472 SMTP output lines.
473
46218253
PH
474PH/58 Allow for the insertion of a newline as well as a space when a string
475 is turned into more than one encoded-word during RFC 2047 encoding. The
476 Sieve code now uses this.
477
e97957bc
PH
478PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
479 data_4xx, lost_connection, tls_required.
480
81e509d7
PH
481PH/60 When a VRFY deferred or FAILED, the log message rather than the user
482 message was being sent as an SMTP response.
483
3d240ff7
PH
484PH/61 Add -l and -k options to exicyclog.
485
b37c4101
PH
486PH/62 When verifying, if an address was redirected to one new address, so that
487 verification continued, and the new address failed or deferred after
488 having set something in $address_data, the value of $address_data was not
489 passed back to the ACL. This was different to the case when no
490 redirection occurred. The value is now passed back in both cases.
491
79378e0f
PH
492PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
493 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
494 use login_cap.h, so on its own it isn't the distinguishing feature. The
495 new name refers directly to the setclassresources() function.
496
e49c7bb4
PH
497PH/65 Added configuration files for NetBSD3.
498
d114ec46
PH
499PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
500
f3d7df6c
PH
501PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
502 is preferred over IPv4.
503
715ab376
PH
504PH/68 The bounce_return_message and bounce_return_body options were not being
505 honoured for bounces generated during the reception of non-SMTP messages.
506 In particular, this applied to messages rejected by the ACL. This bug has
507 been fixed. However, if bounce_return_message is true and bounce_return_
508 body is false, the headers that are returned for a non-SMTP message
509 include only those that have been read before the error was detected.
510 (In the case of an ACL rejection, they have all been read.)
511
6b31b150
PH
512PH/69 The HTML version of the specification is now built in a directory called
513 spec_html instead of spec.html, because the latter looks like a path with
514 a MIME-type, and this confuses some software.
515
516PH/70 Catch two compiler warnings in sieve.c.
517
d515a917
PH
518PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
519 function verify_get_ident() calls ip_connect() to connect a socket, but
520 if the "connect()" function timed out, ip_connect() used to close the
521 socket. However, verify_get_ident() also closes the socket later, and in
522 between Exim writes to the log, which may get opened at this point. When
523 the socket was closed in ip_connect(), the log could get the same file
524 descriptor number as the socket. This naturally causes chaos. The fix is
525 not to close the socket in ip_connect(); the socket should be closed by
526 the function that creates it. There was only one place in the code where
527 this was missing, in the iplookup router, which I don't think anybody now
528 uses, but I've fixed it anyway.
529
9b8fadde
PH
530PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
531 well as to direct DNS lookups. Otherwise the handling of names in host
532 lists is inconsistent and therefore confusing.
533
214e2000 534
5de37277
PH
535Exim version 4.60
536-----------------
537
cc38ddbf
PH
538PH/01 Two changes to the default runtime configuration:
539
540 (1) Move the checks for relay_from_hosts and authenticated clients from
541 after to before the (commented out) DNS black list checks.
542
543 (2) Add control=submission to the relay_from_hosts and authenticated
544 clients checks, on the grounds that messages accepted by these
545 statements are most likely to be submissions.
5de37277 546
72fdd6ae
PH
547PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
548
549 (1) Generate an error if the third argument for the ${prvs expansion is
550 not a single digit.
551
552 (2) Treat a missing third argument of ${prvscheck as if it were an empty
553 string.
554
555 (3) Reset the variables that are obtained from the first argument of
556 ${prvscheck and used in the second argument before leaving the code,
557 because their memory is reclaimed, so using them afterwards may do
558 silly things.
559
560 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
561 one (it's much easier than Tom thought :-).
562
563 (5) Because of (4), we can now allow for the use of $prvscheck_result
564 inside the third argument.
cb9328de 565
cb741023
PH
566PH/03 For some reason, the default setting of PATH when running a command from
567 a pipe transport was just "/usr/bin". I have changed it to
568 "/bin:/usr/bin".
569
f174f16e
PH
570PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
571 anything to be listed in the output from -bV.
b2f5a032 572
c25242d7
PH
573PH/05 When a filter generated an autoreply, the entire To: header line was
574 quoted in the delivery log line, like this:
575
576 => >A.N.Other <ano@some.domain> <original@ddress> ...
577
578 This has been changed so that it extracts the operative address. There
579 may be more than one such address. If so, they are comma-separated, like
580 this:
581
582 => >ano@some.domain,ona@other.domain <original@ddress> ...
583
82c19f95
PH
584PH/06 When a client host used a correct literal IP address in a HELO or EHLO
585 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
586 not being looked up in the rDNS to get a host name, Exim was showing the
587 IP address twice in Received: lines, even though the IP addresses were
588 identical. For example:
589
590 Received: from [1.2.3.4] (helo=[1.2.3.4])
591
592 However, if the real host name was known, it was omitting the HELO data
593 if it matched the actual IP address. This has been tidied up so that it
594 doesn't show the same IP address twice.
595
d7ffbc12
PH
596PH/07 When both +timestamp and +memory debugging was on, the value given by
597 $tod_xxx expansions could be wrong, because the tod_stamp() function was
598 called by the debug printing, thereby overwriting the timestamp buffer.
599 Debugging no longer uses the tod_stamp() function when +timestamp is set.
600
9f526266
PH
601PH/08 When the original message was included in an autoreply transport, it
602 always said "this is a copy of the message, including all the headers",
603 even if body_only or headers_only was set. It now gives an appropriate
604 message.
605
87fcc8b9
PH
606PH/09 Applied a patch from the Sieve maintainer which:
607
608 o fixes some comments
609 o adds the (disabled) notify extension core
610 o adds some debug output for the result of if/elsif tests
611 o points to the current vacation draft in the documentation
612 and documents the missing references header update
613
614 and most important:
615
616 o fixes a bug in processing the envelope test (when testing
617 multiple envelope elements, the last element determinted the
618 result)
619
456682f5
PH
620PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
621 Electronic Mail") by including:
622
623 Auto-submitted: auto-generated
624
625 in the messages that it generates (bounce messages and others, such as
626 warnings). In the case of bounce messages for non-SMTP mesages, there was
627 also a typo: it was using "Auto_submitted" (underscore instead of
628 hyphen). Since every message generated by Exim is necessarily in response
629 to another message, thes have all been changed to:
630
631 Auto-Submitted: auto-replied
632
633 in accordance with these statements in the RFC:
634
635 The auto-replied keyword:
636
637 - SHOULD be used on messages sent in direct response to another
638 message by an automatic process,
639
640 - MUST NOT be used on manually-generated messages,
641
642 - MAY be used on Delivery Status Notifications (DSNs) and Message
643 Disposition Notifications (MDNs),
644
645 - MUST NOT be used on messages generated by automatic or periodic
646 processes, except for messages which are automatic responses to
647 other messages.
648
3e46c1aa
PH
649PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
650 to the default Received: header definition.
456682f5 651
49826d12
PH
652PH/12 Added log selector acl_warn_skipped (default on).
653
eba0c039
PH
654PH/13 After a successful wildlsearch lookup, discard the values of numeric
655 variables because (a) they are in the wrong storage pool and (b) even if
656 they were copied, it wouldn't work properly because of the caching.
657
a0d6ba8a
PH
658PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
659 checking when decoding. Apparently there are clients that generate
660 overlong encoded strings. Why am I not surprised?
661
f0917727
PH
662PH/15 If the first argument of "${if match_address" was not empty, but did not
663 contain an "@" character, Exim crashed. Now it writes a panic log message
664 and treats the condition as false.
665
096fee00
PH
666PH/16 In autoreply, treat an empty string for "once" the same as unset.
667
024bd3c2
PH
668PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
669 extension "envelope-auth". The code is finished and in agreement with
670 other implementations, but there is no documentation so far and in fact,
671 nobody wrote the draft yet. This extension is currently #undef'ed, thus
672 not changing the active code.
673
674 Print executed "if" and "elsif" statements when debugging is used. This
675 helps a great deal to understand what a filter does.
676
677 Document more things not specified clearly in RFC3028. I had all this
678 sorted out, when out of a sudden new issues came to my mind. Oops."
679
df199fec
PH
680PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
681 (Bugzilla #53).
682
d27f1df3
PH
683PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
684 canonical form (as documented). However, after a host name lookup from
685 the IP address, check_host() was doing a simple string comparison with
686 addresses acquired from the DNS when checking that the found name did
687 have the original IP as one of its addresses. Since any found IPv6
688 addresses are likely to be in abbreviated form, the comparison could
689 fail. Luckily, there already exists a function for doing the comparison
690 by converting both addresses to binary, so now that is used instead of
691 the text comparison.
692
96776534
PH
693PH/20 There was another similar case to PH/19, when a complete host name was
694 given in a host list; looking up its IP address could give an abbreviated
695 form, whereas the current host's name might or might not be abbreviated.
696 The same fix has been applied.
697
5de37277 698
9a799bc0
PH
699Exim version 4.54
700-----------------
701
702PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
703 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
704 It now does.
705
99a4b039
PH
706PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
707 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
708
709PH/03 Typo: missing ".o" in src/pcre/Makefile.
710
4b233853
PH
711PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
712 header line, restrict the check to what is listed in RFCs 2369 and 2929.
713 Also, for "Auto-Submitted", treat anything other than "no" as
714 non-personal, in accordance with RFC 3834. (Previously it treated
715 anything starting "auto-" as non-personal.)
716
8857ccfd
PH
717TF/01 The control=submission/name=... option had a problem with syntax
718 errors if the name included a slash character. The /name= option
719 now slurps the rest of the string, so it can include any characters
720 but it must come last in the list of options (after /sender_retain
721 or /domain=).
722
433a2980
PH
723PH/05 Some modifications to the interface to the fake nameserver for the new
724 testing suite.
725
3e46c1aa 726
9a799bc0 727
e3a311ba
TK
728Exim version 4.53
729-----------------
730
731TK/01 Added the "success_on_redirect" address verification option. See
732 NewStuff for rationale and an example.
733
13b685f9
PH
734PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
735
395ff96d
PH
736PH/02 Patch to exigrep to allow it to work on syslog lines.
737
5b68f6e4
PH
738PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
739 fread() to skip over the body file's header line, because in Cygwin the
740 header line is locked and is inaccessible.
741
1ab52c69
PH
742PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
743 co-exist for some time) to make it clear that it is the Exim ID that is
744 referenced, not the Message-ID: header line.
745
b07e6aa3
PH
746PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
747 string_format() function, because snprintf() does not exist on all
748 operating systems.
749
254e032f
PH
750PH/06 The use of forbid_filter_existstest now also locks out the use of the
751 ${stat: expansion item.
752
3af76a81
PH
753PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
754 protocol synchronization error", to keep the pedants happy.
755
2548ba04
PH
756PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
757 well as for IRIX systems, when gcc is being used. See the host.c source
758 file for comments.
759
b6c6011d
PH
760PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
761
cf39cf57
PH
762PH/10 Named domain lists were not working if used in a queue_smtp_domains
763 setting.
764
f1513293
PH
765PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
766 transport and to the smtp transport in LMTP mode.
767
727549a4
PH
768TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
769
af46795e
PH
770PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
771 run a filter in a subprocess. This could lead to confusion in subsequent
772 lookups in the parent process. There should also be a search_tidyup() at
773 the end of the subprocess.
774
d7b47fd0
PH
775PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
776 only if the host matched helo_try_verify_hosts, which caused the
777 verification to occur when the EHLO/HELO command was issued. The ACL just
778 tested the remembered result. Now, if a previous verification attempt has
779 not happened, "verify = helo" does it there and then.
780
ee744174
JJ
781JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
782
b582ab87
PH
783TK/03 Fix log output including CR from clamd.
784
41a13e0a
PH
785PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
786 exist provoked a memory error which could cause a segfault.
787
f625cc5a
PH
788PH/15 Installed PCRE 6.2
789
790PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
791
21f7af35
PH
792PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
793 of the problem. Specifically, suggested +O2 rather than +O1 for the
794 HP-UX compiler.
795
31480e42
PH
796PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
797
2d280592
PH
798PH/20 If a delivery was routed to a non-standard port by means of an SRV
799 record, the port was not correctly logged when the outgoing_port log
800 selector was set (it logged the transort's default port).
801
7cd1141b
PH
802PH/21 Added support for host-specific ports to manualroute, queryprogram,
803 fallback_hosts, and "hosts" in the smtp transport.
804
805PH/22 If the log selector "outgoing_port" is set, the port is now also given on
806 host errors such as "Connection refused".
807
750af86e
PH
808PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
809 authentication with radiusclient 0.4.9:
810
811 - Error returned from rc_read_config was caught wrongly
812 - Username/password not passed on to radius server due to wrong length.
813
814 The presumption is that some radiusclient API changes for 4.51/PH/17
815 were not taken care of correctly. The code is still untested by me (my
816 Linux distribution still has 0.3.2 of radiusclient), but it was
817 contributed by a Radius user.
818
819PH/24 When doing a callout, the value of $domain wasn't set correctly when
820 expanding the "port" option of the smtp transport.
821
4304270b
TK
822TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
823 while reading a MIME header. Thanks to Tom Hughes for a patch.
824
750af86e
PH
825PH/24 Include config.h inside local_scan.h so that configuration settings are
826 available.
827
64ffc24f
PH
828PH/25 Make $smtp_command_argument available after all SMTP commands. This means
829 that in an ACL for RCPT (for example), you can examine exactly what was
830 received.
831
5dd9625b
PH
832PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
833 commands, but it was not correctly comparing the address with the actual
834 client host address. Thus, it would show the EHLO address in Received:
835 header lines when this was not necessary.
836
5591031b
PH
837PH/27 Added the % operator to ${eval:}.
838
ba18e66a
PH
839PH/28 Exim tries to create and chdir to its spool directory when it starts;
840 it should be ignoring failures (because with -C, for example, it has lost
841 privilege). It wasn't ignoring creation failures other than "already
842 exists".
843
9cec981f
PH
844PH/29 Added "crypteq" to the list of supported features that Exim outputs when
845 -bV or -d is used.
846
aa2b5c79
PH
847PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
848 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
849 too many continuations, the temporary file was not being removed, and the
850 return code was incorrect.
aa2b5c79 851
48a53b7f
PH
852PH/31 Missing "BOOL" in function definition in filtertest.c.
853
1c59d63b
PH
854PH/32 Applied Sieve patches from the maintainer.
855
671012da
TK
856TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
857
1509d3a8
PH
858PH/33 Added "verify = not_blind".
859
860PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
861 Local/Makefile (with some defaults set). These are used in built scripts
862 such as exicyclog, but they have never been used in the exim_install
863 script (though there are many overriding facilities there). I have
864 arranged that the exim_install script now takes note of these two
865 settings.
866
867PH/35 Installed configuration files for Dragonfly.
868
2fe1a124
PH
869PH/36 When a locally submitted message by a trusted user did not contain a
870 From: header, and the sender address was obtained from -f or from an SMTP
871 MAIL command, and the trusted user did not use -F to supply a sender
872 name, $originator_name was incorrectly used when constructing a From:
873 header. Furthermore, $originator_name was used for submission mode
874 messages from external hosts without From: headers in a similar way,
875 which is clearly wrong.
876
8800895a
PH
877PH/37 Added control=suppress_local_fixups.
878
ccfdb010
PH
879PH/38 When log_selector = +received_sender was set, and the addition of the
880 sender made the log line's construction buffer exactly full, or one byte
881 less than full, an overflow happened when the terminating "\n" was
882 subsequently added.
883
1130bfb0
PH
884PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
885 when the result of a list match is failure because a DNS lookup failed.
886
ebcb507f
PH
887PH/40 RM_COMMAND is now used in the building process.
888
c35e155c
PH
889PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
890 the "build-* directories that it finds.
891
95d1f782
PH
892PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
893 address in a domain literal was a prefix of an interface address.
894
fd6de02e
PH
895PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
896 when verifying a sender address, unless rewrite_headers is false.
897
58de37c5
PH
898PH/44 Wrote a long comment about why errors_to addresses are verified as
899 recipients, not senders.
900
261cf466
TF
901TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
902 the ratelimit ACL was added.
903
3ee512ff
PH
904PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
905
e08c430f
PH
906PH/46 Added extra information about PostgreSQL errors to the error string.
907
bef5a11f
PH
908PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
909 avoiding the need to install special zones in a real server. This is
910 backwards compatible; if it can't find the fake resolver, it drops back.
911 Thus, both old and new test suites can be run.
912
7546de58
TF
913TF/02 Added util/ratelimit.pl
914
e5d5a95f
TF
915TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
916 clock is set back in time.
917
2e88a017
TF
918TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
919 Candler <B.Candler@pobox.com>.
920
a5f65aa4
TF
921TF/05 The fix for PH/43 was not completely correct; widen_domains is always
922 OK for addresses that are the result of redirections.
923
e7726cbf
PH
924PH/48 A number of further additions for the benefit of the new test suite,
925 including a fake gethostbyname() that interfaces to the fake DNS resolver
926 (see PH/47 above).
927
a7fdad5b
TF
928TF/06 The fix for widen_domains has also been applied to qualify_single and
929 search_parents which are the other dnslookup options that can cause
930 header rewrites.
931
6af56900
PH
932PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
933 type ("H").
934
0925ede6
PH
935PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
936
66afa403
TF
937TF/07 Exim produced the error message "an SRV record indicated no SMTP
938 service" if it encountered an MX record with an empty target hostname.
939 The message is now "an MX or SRV record indicated no SMTP service".
940
0154e85a
TF
941TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
942 if the DNS of the sending site is misconfigured. This is quite a
943 common situation. This change restores the behaviour of treating a
944 helo verification defer as a failure.
945
16f12c76
PH
946PH/51 If self=fail was set on a router, the bounce message did not include the
947 actual error message.
948
bbe902f0 949
e5a9dba6
PH
950Exim version 4.52
951-----------------
952
953TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
954
22c3b60b
PH
955PH/01 When a transport filter timed out in a pipe delivery, and the pipe
956 command itself ended in error, the underlying message about the transport
957 filter timeout was being overwritten with the pipe command error. Now the
958 underlying error message should be appended to the second error message.
959
06a9b4b5
PH
960TK/01 Fix poll() being unavailable on Mac OSX 10.2.
961
c1ac6996
PH
962PH/02 Reduce the amount of output that "make" produces by default. Full output
963 can still be requested.
964
9c7a242c
PH
965PH/03 The warning log line about a condition test deferring for a "warn" verb
966 was being output only once per connection, rather than after each
967 occurrence (because it was using the same function as for successful
968 "warn" verbs). This seems wrong, so I have changed it.
969
87ba3f5f
PH
970TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
971 it should not have, which might have caused a crash in the right
972 circumstances, but probably never did.
973
974PH/04 Installed a modified version of Tony Finch's patch to make submission
975 mode fix the return path as well as the Sender: header line, and to
976 add a /name= option so that you can make the user's friendly name appear
977 in the header line.
978
29aba418
TF
979TF/03 Added the control = fakedefer ACL modifier.
980
fe0dab11
TF
981TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
982 Mark Lowes for thorough testing.
870f6ba8 983
11d337a4
TK
984TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
985
986TK/03 Merged latest SRS patch from Miles Wilton.
987
415c8f3b
PH
988PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
989 with the definition in sysexits.h (which is #included earlier).
990 Fortunately, Exim does not actually use EX_OK. The code used to try to
991 preserve the sysexits.h value, by assumimg that macro definitions were
992 scanned for macro replacements. I have been disabused of this notion,
993 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 994
958541e9
PH
995PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
996 in the smtp transport. When a block could not be written in a single
997 write() function, the timeout was being re-applied to each part-write.
998 This seems wrong - if the receiver was accepting one byte at a time it
999 would take for ever. The timeout is now adjusted when this happens. It
1000 doesn't have to be particularly precise.
1001
c206415f
TK
1002TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1003 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1004
2a4be8f9
PH
1005PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1006 without a domain if the check to <postmaster@domain> fails.
1007
1cba11c5
SC
1008SC/01 Eximstats: added -xls and the ability to specify output files
1009 (patch written by Frank Heydlauf).
1010
1011SC/02 Eximstats: use FileHandles for outputing results.
1012
1013SC/03 Eximstats: allow any combination of xls, txt, and html output.
1014
1015SC/04 Eximstats: fixed display of large numbers with -nvr option
1016
1017SC/05 Eximstats: fixed merging of reports with empty tables.
1018
1019SC/06 Eximstats: added the -include_original_destination flag
1020
1021SC/07 Eximstats: removed tabs and trailing whitespace.
1022
1005d00e
TK
1023TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1024
1025TK/06 MBOX spool code: Add real "From " MBOX separator line
1026 so the .eml file is really in mbox format (even though
1027 most programs do not really care). Patch from Alex Miller.
1028
1029TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1030 The latter is generated from $received_to and is only set if the
1031 message has one envelope recipient. SA can use these headers,
1032 obviously out-of-the-box. Patch from Alex Miller.
1033
9b4768fa
PH
1034PH/08 The ${def test on a variable was returning false if the variable's
1035 value was "0", contrary to what the specification has always said!
1036 The result should be true unless the variable is empty.
1037
1038PH/09 The syntax error of a character other than { following "${if
1039 def:variable_name" (after optional whitespace) was not being diagnosed.
1040 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1041 accidental colon was present, for example, could give incorrect results.
1042
0d7eb84a
PH
1043PH/10 Tidied the code in a number of places where the st_size field of a stat()
1044 result is used (not including appendfile, where other changes are about
1045 to be made).
1046
1047PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1048 This involved changing a lot of size variables from int to off_t. It
1049 should work with maildirs and everything.
1050
40727bee
TK
1051TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1052 spamd dying while we are connected to it.
1053
554d2369
TF
1054TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1055 <jgh@wizmail.org>
1056
1f922db1
PH
1057PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1058 function for BDB 4.3.
1059
ef213c3b
PH
1060PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1061
8ac170f3
PH
1062PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1063 the sources for PCRE have been re-arranged and more files are now
1064 involved.
1065
b1c749bb
PH
1066PH/15 The code I had for printing potentially long long variables in PH/11
1067 above was not the best (it lost precision). The length of off_t variables
1068 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1069 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1070 to be "long long int" or "long int". This is needed for the internal
1071 formatting function string_vformat().
b1c749bb 1072
4aac9b49
PH
1073PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1074 the configuration file to be ":syslog", then the script "guesses" where
1075 the logs files are, rather than using the compiled in default. In our
1076 case the guess is not the same as the compiled default, so the script
1077 suddenly stopped working when I started to use syslog. The patch checks
1078 to see if log_file_path is "". If so, it attempts to read it from exim
1079 with no configuration file to get the compiled in version, before it
1080 falls back to the previous guessing code."
1081
294520c8
TK
1082TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1083 implementing BATV in an Exim configuration. See NewStuff for the gory
1084 details.
1085
5bd022fe
PH
1086PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1087 Makefile that are specific to HP-UX.
1088
90e9ce59
PH
1089PH/18 If the "use_postmaster" option was set for a recipient callout together
1090 with the "random" option, the postmaster address was used as the MAIL
1091 FROM address for the random test, but not for the subsequent recipient
1092 test. It is now used for both.
1093
5ea81592
PH
1094PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1095 patch removes a few documentation additions to RFC 3028, because the
1096 latest draft now contains them. It adds the new en;ascii-case comparator
1097 and a new error check for 8bit text in MIME parts. Comparator and
1098 require names are now matched exactly. I enabled the subaddress
1099 extension, but it is not well tested yet (read: it works for me)."
1100
c6c2dc1d
PH
1101PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1102 rework some of the code of TK/09 above to avoid the hardwired use of
1103 "%lld" and "long long". Replaced the call to snprintf() with a call to
1104 string_vformat().
1105
fffffe4c
PH
1106PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1107 records point to non-existent hosts", "retry timeout exceeded", and
1108 "retry time not reached for any host after a long failure period".
ca02eafb 1109
9a26b6b2
PH
1110PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1111 experimental DomainKeys support:
1112
1113 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1114 (2) On an error such as an illegally used "control", the wrong name for
1115 the control was given.
1116
1117 These problems did NOT occur unless DomainKeys support was compiled.
1118
4aee0225
PH
1119PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1120
32d668a5
PH
1121PH/24 Added ${if match_ip condition.
1122
8187c3f3
PH
1123PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1124 databases so that it will be absolutely obvious if a crash occurs in the
1125 DB library. This is a regular occurrence (often caused by mis-matched
1126 db.h files).
1127
ff790e47 1128PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1129 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1130 picked up on a user's system that detects such things. There doesn't seem
1131 to be a gcc warning option for this - only an attribute that has to be
1132 put on the function's prototype. It seems that in Fedora Core 4 they have
1133 set this on a number of new functions. No doubt there will be more in due
1134 course.
ff790e47 1135
5417f6d1
PH
1136PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1137 specify a transport. However, if an address that was verified by such a
1138 router was the subject of a callout, Exim crashed because it tried to
1139 read the rcpt_include_affixes from the non-existent transport. Now it
1140 just assumes that the setting of that option is false. This bug was
1141 introduced by 4.51/PH/31.
1142
59cf8544
PH
1143PH/28 Changed -d+all to exclude +memory, because that information is very
1144 rarely of interest, but it makes the output a lot bigger. People tend to
1145 do -d+all out of habit.
1146
e7ad8a65
PH
1147PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1148 code in os-type was giving problems when libc.so lives in lib64, like on
1149 x86_64 Fedora Core.
1150
ade42478
PH
1151PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1152 aren't the modern standard, and it seems that some systems' include files
1153 don't always have them. Exim was already checking for some of the newer
1154 ones like T_AAAA, and defining it itself. I've added checks for all the
1155 record types that Exim uses.
1156
182ad5cf
PH
1157PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1158 not automatically generating a new one, as it is supposed to. This
1159 prevented TLS from working. If the file did exist, but contained invalid
1160 data, a new version was generated, as expected. It was only the case of a
1161 non-existent file that was broken.
1162
b0d9fc80
TK
1163TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1164 with a change in libdomainkeys > 0.64.
1165
1166TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1167 from DNS. If the selector record carries the flag, it now has
1168 precedence over the domain-wide flag.
1169
1170TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1171
47c7a64a
PH
1172PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1173 the use of a port name that isn't defined in /etc/services) occurred, the
1174 message was deferred as in a normal delivery, and thus remained on the
1175 spool, instead of being failed because of the mua_wrapper setting. This
1176 is now fixed, and I tidied up some of the mua_wrapper messages at the
1177 same time.
1178
a388bce4
SC
1179SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1180 the messages in a hash of arrays rather than using individual hashes.
1181 This is a bit cleaner and results in dramatic memory savings, albeit
1182 at a slight CPU cost.
1183
1184SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1185 as requested by Marc Sherman.
1186
1187SC/10 Eximstats: added histograms for user specified patterns as requested
1188 by Marc Sherman.
1189
0793e4ed
SC
1190SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1191
c58b88df
PH
1192PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1193 fopen() in the content-scanning modules that did not already have it.
1194
e7ad8a65 1195
7982096b
PH
1196Exim version 4.51
1197-----------------
1198
1a46a8c5
PH
1199TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1200 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1201
2f079f46 1202TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1203
1204TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1205
1206PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1207 to test Sieve filters that use "vacation".
1208
1209PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1210 that changes the way the GnuTLS parameters are stored in the cache file.
1211 The new format can be generated externally. For backward compatibility,
1212 if the data in the cache doesn't make sense, Exim assumes it has read an
1213 old-format file, and it generates new data and writes a new file. This
1214 means that you can't go back to an older release without removing the
1215 file.
1216
1217PH/03 A redirect router that has both "unseen" and "one_time" set does not
1218 work if there are any delivery delays because "one_time" forces the
1219 parent to be marked "delivered", so its unseen clone is never tried
1220 again. For this reason, Exim now forbids the simultaneous setting of
1221 these two options.
1222
1223PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1224 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1225 entry if you want to know the details. The fix, however, neglected to
1226 consider the case when local delivery batching is involved. The test for
1227 "previously delivered" was not happening when checking to see if an
1228 address could be batched with a previous (undelivered) one; under
1229 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1230 address.
1a46a8c5
PH
1231
1232PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1233 in its include files, and this causes problems building Exim.
1234
1235PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1236 header_syntax) but Exim was just ignoring anything given after a slash.
1237 In particular, this caused confusion with an attempt to use "verify =
1238 reverse_host_lookup/defer_ok". An error is now given when options are
1239 supplied for verify items that do not have them. (Maybe reverse_host_
1240 lookup should have a defer_ok option, but that's a different point.)
1241
1242PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1243 defined by RFC 821) to 2048, because there were problems with some AUTH
1244 commands, and RFC 1869 says the size should be increased for extended
1245 SMTP commands that take arguments.
1246
1247PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1248 Finch).
1249
1250PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1251 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1252
49c2d5ea
PH
1253PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1254 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1255 whatever). Otherwise the password may appear in the log. Following change
1256 PH/42 below, there is no longer a chance of it appearing in a bounce
1257 message.
49c2d5ea 1258
bf759a8b
PH
1259PH/11 Installed exipick version 20050225.0 from John Jetmore.
1260
83364d30
PH
1261PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1262 of its addresses was ever tried. (Bugzilla bug #2.)
1263
7999bbd7
PH
1264PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1265 the result incorrectly in the debug output. (It correctly added a newline
1266 to what was transported.)
1267
7dbf77c9
PH
1268TF/01 Added $received_time.
1269
74e0617f
PH
1270PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1271 commented out examples of how to interface to a virus scanner and to
1272 SpamAssassin. Also added commented examples of av_scanner and
1273 spamd_address settings.
1274
2f079f46
PH
1275PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1276 and controls are allowed in which ACLs. There were a couple of minor
1277 errors. Some of the entries in the conditions table (which is a table of
1278 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1279 negation of where the condition IS allowed.
1280
8c841523
PH
1281PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1282
7766a4f0
PH
1283PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1284 header file does not have a version number, so I've had to invent a new
1285 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1286 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1287 radiusclient), but it was contributed by a Radius user.
1288
8b417f2c
PH
1289PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1290 files or directories, for OpenSSL.
1291
901f42cb
PH
1292PH/19 When an Exim process that is running as root has to create an Exim log
1293 file, it does so in a subprocess that runs as exim:exim so as to get the
1294 ownership right at creation (otherwise, other Exim processes might see
1295 the file with the wrong ownership). There was no test for failure of this
1296 fork() call, which would lead to the process getting stuck as it waited
1297 for a non-existent subprocess. Forks do occasionally fail when resources
1298 run out. I reviewed all the other calls to fork(); they all seem to check
1299 for failure.
1300
f9b9210e
PH
1301PH/20 When checking for unexpected SMTP input at connect time (before writing
1302 the banner), Exim was not dealing correctly with a non-positive return
1303 from the read() function. If the client had disconnected by this time,
1304 the result was a log entry for a synchronization error with an empty
1305 string after "input=" when read() returned zero. If read() returned -1
1306 (an event I could not check), uninitialized data bytes were printed.
1307 There were reports of junk text (parts of files, etc) appearing after
1308 "input=".
1309
54cdb463
PH
1310PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1311
cf00dad6
PH
1312PH/22 Added support for macro redefinition, and (re)definition in between
1313 driver and ACL definitions.
1314
acb1b346
PH
1315PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1316 forgetting to use the resulting value; it was using the unexpanded value.
1317
c5ddb310
PH
1318PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1319 hadn't been configured. The fix is from Juergen Kreileder, who
1320 understands it better than I do:
1321
1322 "Here's what I see happening with three configured cyrus_sasl
1323 authenticators configured (plain, login, cram-md5):
1324
1325 On startup auth_cyrus_sasl_init() gets called for each of these.
1326 This means three calls to sasl_listmech() without a specified mech_list.
1327 => SASL tests which mechs of all available mechs actually work
1328 => three warnings about OTP not working
1329 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1330
1331 With the patch, sasl_listmech() also gets called three times. But now
1332 SASL's mech_list option is set to the server_mech specified in the the
1333 authenticator. Or in other words, the answer from sasl_listmech()
1334 gets limited to just the mech you're testing for (which is different
1335 for each call.)
1336 => the return list contains just 'plain' or 'login', 'cram-md5' or
1337 nothing depending on the value of ob->server_mech.
1338
1339 I've just tested the patch: Authentication still works fine,
1340 unavailable mechs specified in the exim configuration are still
1341 caught, and the auth.log warnings about OTP are gone."
1342
31619da6
PH
1343PH/25 When debugging is enabled, the contents of the command line are added
1344 to the debugging output, even when log_selector=+arguments is not
1345 specified.
1346
bebaf0fc
PH
1347PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1348 answer is "GNU", and only if the return is "GNU/something" is the answer
1349 "Linux".
1350
475fe28a
PH
1351PH/27 $acl_verify_message is now set immediately after the failure of a
1352 verification in an ACL, and so is available in subsequent modifiers. In
1353 particular, the message can be preserved by coding like this:
1354
1355 warn !verify = sender
1356 set acl_m0 = $acl_verify_message
1357
1358 Previously, $acl_verify_message was set only while expanding "message"
1359 and "log_message" when a very denied access.
1360
7e8bec7a
PH
1361PH/28 Modified OS/os.c-Linux with
1362
1363 -#ifndef OS_LOAD_AVERAGE
1364 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1365
1366 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1367 nomenclature these days.)
1368
e4a89c47
PH
1369PH/29 Installed patch from the Sieve maintainer that adds the options
1370 sieve_useraddress and sieve_subaddress to the redirect router.
1371
5ca2a9a1
PH
1372PH/30 In these circumstances:
1373 . Two addresses routed to the same list of hosts;
1374 . First host does not offer TLS;
1375 . First host accepts first address;
1376 . First host gives temporary error to second address;
1377 . Second host offers TLS and a TLS session is established;
1378 . Second host accepts second address.
1379 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1380 and peerdn, if requested) that were in fact used only for the second
1381 address.
7e8bec7a 1382
c688b954
PH
1383PH/31 When doing a callout as part of verifying an address, Exim was not paying
1384 attention to any local part prefix or suffix that was matched by the
1385 router that accepted the address. It now behaves in the same way as it
1386 does for delivery: the affixes are removed from the local part unless
1387 rcpt_include_affixes is set on the transport.
1388
fed77020
PH
1389PH/32 Add the sender address, as F=<...>, to the log line when logging a
1390 timeout during the DATA phase of an incoming message.
1391
7fe1560f
PH
1392PH/33 Sieve envelope tests were broken for match types other than :is. I have
1393 applied a patch sanctioned by the Sieve maintainer.
c688b954 1394
ebb6e6d5
PH
1395PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1396 the uid or gid is negative. A case of a negative gid caused this to be
1397 noticed. The fix allows for either to be negative.
1398
9c4e8f60
PH
1399PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1400 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1401 overlooked.
1402
1403PH/36 The change PH/12 above was broken. Fixed it.
1404
d7174846
PH
1405PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1406 the grounds that routing the same address twice would always produce the
1407 same answer. This might have been true once, but it is certainly no
1408 longer true now. Routing a child address may depend on the previous
1409 routing that produced that child. Some complicated redirection strategies
1410 went wrong when messages had multiple recipients, and made Exim's
1411 behaviour dependent on the order in which the addresses were given.
1412
1413 I have moved the duplicate checking until after the routing is complete.
1414 Exim scans the addresses that are assigned to local and remote
1415 transports, and removes any duplicates. This means that more work will be
1416 done, as duplicates will always all be routed, but duplicates are
1417 presumably rare, so I don't expect this is of any significance.
1418
1419 For deliveries to pipes, files, and autoreplies, the duplicate checking
1420 still happens during the routing process, since they are not going to be
1421 routed further.
1422
cfe75fc3
PH
1423PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1424 It corrects a timeout issue with spamd. This is Ian's comment: "The
1425 background is that sometimes spamd either never reads data from a
1426 connection it has accepted, or it never writes response data. The exiscan
1427 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1428 blindly assumes that writes won't block so it may never time out."
1429
be22d70e
PH
1430PH/39 Allow G after quota size as well as K and M.
1431
0612b098
PH
1432PH/40 The value set for $authenticated_id in an authenticator may not contain
1433 binary zeroes or newlines because the value is written to log lines and
1434 to spool files. There was no check on this. Now the value is run through
1435 the string_printing() function so that such characters are converted to
1436 printable escape sequences.
1437
2e0c1448
PH
1438PH/41 $message_linecount is a new variable that contains the total number of
1439 lines in the message. Compare $body_linecount, which is the count for the
1440 body only.
1441
447d236c
PH
1442PH/42 Exim no longer gives details of delivery errors for specific addresses in
1443 bounce and delay warning messages, except in certain special cases, which
1444 are as follows:
1445
1446 (a) An SMTP error message from a remote host;
1447 (b) A message specified in a :fail: redirection;
1448 (c) A message specified in a "fail" command in a system filter;
1449 (d) A message specified in a FAIL return from the queryprogram router;
1450 (e) A message specified by the cannot_route_message router option.
1451
1452 In these cases only, Exim does include the error details in bounce and
1453 warning messages. There are also a few cases where bland messages such
1454 as "unrouteable address" or "local delivery error" are given.
1455
d20976dc
PH
1456PH/43 $value is now also set for the "else" part of a ${run expansion.
1457
f656d135
PH
1458PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
1459 being worked on, but at least Exim now implements the latest version to
1460 play with."
1461
2e2a30b4
PH
1462PH/45 In a pipe transport, although a timeout while waiting for the pipe
1463 process to complete was treated as a delivery failure, a timeout while
1464 writing the message to the pipe was logged, but erroneously treated as a
1465 successful delivery. Such timeouts include transport filter timeouts. For
1466 consistency with the overall process timeout, these timeouts are now
1467 treated as errors, giving rise to delivery failures by default. However,
1468 there is now a new Boolean option for the pipe transport called
1469 timeout_defer, which, if set TRUE, converts the failures into defers for
1470 both kinds of timeout. A transport filter timeout is now identified in
1471 the log output.
1472
9176e9f0
PH
1473PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
1474 systems where "make" and "gmake" are different, calling "gmake" at top
1475 level broke things. I've arranged for the value of $(MAKE) to be passed
1476 from the Makefile to this script so that it can call the same version of
1477 "make".
1478
7982096b 1479
bbe902f0
PH
1480A note about Exim versions 4.44 and 4.50
1481----------------------------------------
1482
1483Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
1484changes of various kinds. As a consequence, a big documentation update was
1485needed. This delayed the release for rather longer than seemed good, especially
1486in the light of a couple of (minor) security issues. Therefore, the changes
1487that fixed bugs were backported into 4.43, to create a 4.44 maintenance
1488release. So 4.44 and 4.50 are in effect two different branches that both start
1489from 4.43.
1490
1491I have left the 4.50 change log unchanged; it contains all the changes since
14924.43. The change log for 4.44 is below; many of its items are identical to
1493those for 4.50. This seems to be the most sensible way to preserve the
1494historical information.
1495
1496
f7b63901 1497Exim version 4.50
495ae4b0
PH
1498-----------------
1499
5fe762f6
PH
1500 1. Minor wording change to the doc/README.SIEVE file.
1501
139059f6 1502 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 1503 computation of the current number of files was incorrect.
495ae4b0 1504
7086e875
PH
1505 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1506 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1507 place.
1508
35af9f61
PH
1509 4. Give more explanation in the error message when the command for a transport
1510 filter fails to execute.
1511
b668c215
PH
1512 5. There are several places where Exim runs a non-Exim command in a
1513 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1514 was being done only for the command run by the queryprogram router. It is
1515 now done for all such subprocesses. The other cases are: ${run, transport
1516 filters, and the commands run by the lmtp and pipe transports.
1517
a494b1e1
PH
1518 6. Added CONFIGURE_GROUP build-time option.
1519
1520 7. Some older OS have a limit of 256 on the maximum number of file
1521 descriptors. Exim was using setrlimit() to set 1000 as a large value
1522 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1523 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 1524
c5fcb476
PH
1525 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1526 was an oversight, and furthermore, ever since the addition of extra
1527 controls (e.g. 4.43/32), the checks on when to allow different forms of
1528 "control" were broken. There should now be diagnostics for all cases when a
1529 control that does not make sense is encountered.
1530
69358f02
PH
1531 9. Added the /retain_sender option to "control=submission".
1532
5be20824
PH
153310. $recipients is now available in the predata ACL (oversight).
1534
eb2c0248
PH
153511. Tidy the search cache before the fork to do a delivery from a message
1536 received from the command line. Otherwise the child will trigger a lookup
1537 failure and thereby defer the delivery if it tries to use (for example) a
1538 cached ldap connection that the parent has called unbind on.
1539
2a3eea10
PH
154012. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1541 of $address_data from the recipient verification was clobbered by the
1542 sender verification.
1543
154413. The value of address_data from a sender verification is now available in
1545 $sender_address_data in subsequent conditions in the ACL statement.
1546
23c7ff99
PH
154714. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
1548
4deaf07d
PH
154915. Added a new option "connect=<time>" to callout options, to set a different
1550 connection timeout.
1551
926e1192
PH
155216. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1553 was its contents. (It was OK if the option was not defined at all.)
1554
650edc6f
PH
155517. A "Completed" log line is now written for messages that are removed from
1556 the spool by the -Mrm option.
1557
2c7db3f5
PH
155818. New variables $sender_verify_failure and $recipient_verify_failure contain
1559 information about exactly what failed.
1560
3d235903
PH
156119. Added -dd to debug only the daemon process.
1562
7c7ad977
PH
156320. Incorporated Michael Haardt's patch to ldap.c for improving the way it
1564 handles timeouts, both on the server side and network timeouts. Renamed the
1565 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
1566
981756db
PH
156721. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
1568 It is now set to "smtps".
1569
d4eb88df
PH
157022. $host_address is now set to the target address during the checking of
1571 ignore_target_hosts.
1572
157323. When checking ignore_target_hosts for an ipliteral router, no host name was
1574 being passed; this would have caused $sender_host_name to have been used if
1575 matching the list had actually called for a host name (not very likely,
1576 since this list is usually IP addresses). A host name is now passed as
1577 "[x.x.x.x]".
1578
7d468ab8
PH
157924. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1580 code that specifies a non-restarting handler (typically sigaction() in
1581 modern systems) in an attempt to fix a rare and obscure crash bug.
1582
158325. Narrowed the window for a race in the daemon that could cause it to ignore
1584 SIGCHLD signals. This is not a major problem, because they are used only to
1585 wake it up if nothing else does.
1586
62c0818f
PH
158726. A malformed maildirsize file could cause Exim to calculate negative values
1588 for the mailbox size or file count. Odd effects could occur as a result.
1589 The maildirsize information is now recalculated if the size or filecount
1590 end up negative.
1591
26034054
PH
159227. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1593 support for a long time. Removed HAVE_SYS_VFS_H.
1594
af66f652
PH
159528. Installed the latest version of exipick from John Jetmore.
1596
90af77f4
PH
159729. In an address list, if the pattern was not a regular expression, an empty
1598 subject address (from a bounce message) matched only if the pattern was an
1599 empty string. Non-empty patterns were not even tested. This was the wrong
1600 because it is perfectly reasonable to use an empty address as part of a
1601 database query. An empty address is now tested by patterns that are
1602 lookups. However, all the other forms of pattern expect the subject to
1603 contain a local part and a domain, and therefore, for them, an empty
1604 address still always fails if the pattern is not itself empty.
1605
d8ef3577
PH
160630. Exim went into a mad DNS loop when attempting to do a callout where the
1607 host was specified on an smtp transport, and looking it up yielded more
1608 than one IP address.
1609
5cb8cbc6
PH
161031. Re-factored the code for checking spool and log partition space into a
1611 function that finds that data and another that does the check. The former
1612 is then used to implement four new variables: $spool_space, $log_space,
1613 $spool_inodes, and $log_inodes.
1614
14702f5b
PH
161532. The RFC2047 encoding function was originally intended for short strings
1616 such as real names; it was not keeping to the 75-character limit for
1617 encoded words that the RFC imposes. It now respects the limit, and
1618 generates multiple encoded words if necessary. To be on the safe side, I
1619 have increased the buffer size for the ${rfc2047: expansion operator from
1620 1024 to 2048 bytes.
1621
063b1e99
PH
162233. It is now permitted to omit both strings after an "if" condition; if the
1623 condition is true, the result is "true". As before, when the second string
1624 is omitted, a false condition yields an empty string. This makes it less
1625 cumbersome to write custom ACL and router conditions.
1626
652e1b65
PH
162734. Failure to deliver a bounce message always caused it to be frozen, even if
1628 there was an errors_to setting on the router. The errors_to setting is now
1629 respected.
1630
6f0c9a4f
PH
163135. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1632 canonical form (fully expanded) before being placed in
1633 $sender_host_address.
1634
33397d19
PH
163536. The table in the code that translates DNS record types into text (T_A to
1636 "A" for instance) was missing entries for NS and CNAME. It is just possible
1637 that this could have caused confusion if both these types were looked up
1638 for the same domain, because the text type is used as part of Exim's
1639 per-process caching. But the chance of anyone hitting this buglet seems
1640 very small.
1641
7bb56e1f
PH
164237. The dnsdb lookup has been extended in a number of ways.
1643
1644 (1) There is a new type, "zns", which walks up the domain tree until it
1645 finds some nameserver records. It should be used with care.
1646
ea3bc19b
PH
1647 (2) There is a new type, "mxh", which is like "mx" except that it returns
1648 just the host names, not the priorities.
1649
1650 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
1651 looked up. The behaviour when one of the lookups defers can be
1652 controlled by a keyword.
7bb56e1f 1653
ea3bc19b 1654 (4) It is now possible to specify the separator character for use when
7bb56e1f 1655 multiple records are returned.
33397d19 1656
0bcb2a0e
PH
165738. The dnslists ACL condition has been extended: it is now possible to supply
1658 a list of IP addresses and/or domains to be looked up in a particular DNS
1659 domain.
1660
2ac0e484
PH
166139. Added log_selector=+queue_time_overall.
1662
4e1fde53
PH
166340. When running the queue in the test harness, wait just a tad after forking a
1664 delivery process, to get repeatability of debugging output.
1665
de365ded
PH
166641. Include certificate and key file names in error message when GnuTLS fails
1667 to set them up, because the GnuTLS error message doesn't include the name
1668 of the failing file when there is a problem reading it.
1669
f05da2e8
PH
167042. Allow both -bf and -bF in the same test run.
1671
d6453af2
PH
167243. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
1673
f7b63901
PH
167444. The "Exiscan patch" is now merged into the mainline Exim source.
1675
167645. Sometimes the final signoff response after QUIT could fail to get
1677 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
1678 < 0 before doing a fflush(). This bug looks as though it goes back to the
1679 introduction of TLS in release 3.20, but "sometimes" must have been rare
1680 because the tests only now provoked it.
1681
a444213a
PH
168246. Reset the locale to "C" after calling embedded Perl, in case it was changed
1683 (this can affect the format of dates).
1684
0ec020ea
PH
168547. exim_tidydb, when checking for the continued existence of a message for
1686 which it has found a message-specific retry record, was not finding
1687 messages that were in split spool directories. Consequently, it was
1688 deleting retry records that should have stayed in existence.
1689
b1206957
PH
169048. Steve fixed some bugs in eximstats.
1691
169249. The SPA authentication driver was not abandoning authentication and moving
1693 on to the next authenticator when an expansion was forced to fail,
1694 contradicting the general specification for all authenticators. Instead it
1695 was generating a temporary error. It now behaves as specified.
1696
26dd5a95
PH
169750. The default ordering of permitted cipher suites for GnuTLS was pessimal
1698 (the order specifies the preference for clients). The order is now AES256,
1699 AES128, 3DES, ARCFOUR128.
1700
343b2385
PH
170151. Small patch to Sieve code - explicitly set From: when generating an
1702 autoreply.
1703
1c5466b9
PH
170452. Exim crashed if a remote delivery caused a very long error message to be
1705 recorded - for instance if somebody sent an entire SpamAssassin report back
1706 as a large number of 550 error lines. This bug was coincidentally fixed by
1707 increasing the size of one of Exim's internal buffers (big_buffer) that
1708 happened as part of the Exiscan merge. However, to be on the safe side, I
1709 have made the code more robust (and fixed the comments that describe what
1710 is going on).
1711
55ee9ee3
PH
171253. Now that there can be additional text after "Completed" in log lines (if
1713 the queue_time_overall log selector is set), a one-byte patch to exigrep
1714 was needed to allow it to recognize "Completed" as not the last thing in
1715 the line.
1716
d38f8232
PH
171754. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
1718 patch that reportedly fixes this has been added. I am not expert enough to
1719 create a test for it. This is what the patch creator wrote:
1720
1721 "I found a little strange behaviour of ldap code when working with
1722 Windows 2003 AD Domain, where users was placed in more than one
1723 Organization Units. When I tried to give exim partial DN, the exit code
1724 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
1725 But simultaneously result of request was absolutely normal ldap result,
1726 so I produce this patch..."
1727
3295e65b
PH
1728 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
1729 REFERENCE, so I have modified the code to exclude the patch when that macro
1730 is not defined.
1731
7102e136
PH
173255. Some experimental protocols are using DNS PTR records for new purposes. The
1733 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
1734 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
1735 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 1736 CAN-2005-0021
7102e136 1737
3ca0ba97
PH
173856. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
1739
c2bcbe20
PH
174057. Double the size of the debug message buffer (to 2048) so that more of very
1741 long debug lines gets shown.
1742
18ce445d
PH
174358. The exicyclog utility now does better if the number of log files to keep
1744 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
1745
1f5b4c3d
PH
174659. Two changes related to the smtp_active_hostname option:
1747
1748 (1) $smtp_active_hostname is now available as a variable.
1749 (2) The default for smtp_banner uses $smtp_active_hostname instead
1750 of $primary_hostname.
1751
b975ba52
PH
175260. The host_aton() function is supposed to be passed a string that is known
1753 to be a valid IP address. However, in the case of IPv6 addresses, it was
1754 not checking this. This is a hostage to fortune. Exim now panics and dies
1755 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
1756 from a dnsdb PTR lookup with an IPv6 address that had more than 8
1757 components; fortuitously, this particular loophole had already been fixed
1758 by change 4.50/55 above.
1759
1760 If there are any other similar loopholes, the new check in host_aton()
1761 itself should stop them being exploited. The report I received stated that
1762 data on the command line could provoke the exploit when Exim was running as
1763 exim, but did not say which command line option was involved. All I could
1764 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
1765 running as the user.
ea3a6f44 1766 CAN-2005-0021
85b87bc2
PH
1767
176861. There was a buffer overflow vulnerability in the SPA authentication code
1769 (which came originally from the Samba project). I have added a test to the
1770 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 1771 CAN-2005-0022
b975ba52 1772
17ffcae7
PH
177362. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
1774 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
1775
d95f9fdb
PH
177663. The daemon start-up calls getloadavg() while still root for those OS that
1777 need the first call to be done as root, but it missed one case: when
1778 deliver_queue_load_max is set with deliver_drop_privilege. This is
1779 necessary for the benefit of the queue runner, because there is no re-exec
1780 when deliver_drop_privilege is set.
1781
86b8287f
PH
178264. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
1783 This has been fixed.
1784
60dc5e56
PH
178565. Caching of lookup data for "hosts =" ACL conditions, when a named host list
1786 was in use, was not putting the data itself into the right store pool;
1787 consequently, it could be overwritten for a subsequent message in the same
1788 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
1789 the caching.)
1790
533244af
PH
179166. Added hosts_max_try_hardlimit to the smtp transport, default 50.
1792
a5a28604
PH
179367. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
1794 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
1795 the function were treating the return as a boolean value, which happened to
1796 work because 0=false and not-0=true, but is not correct code.
1797
7e634d24
PH
179868. The host_aton() function was not handling scoped IPv6 addresses (those
1799 with, for example, "%eth0" on the end) correctly.
1800
3e11c26b
PH
180169. Fixed some compiler warnings in acl.c for the bitmaps specified with
1802 negated items (that is, ~something) in unsigned ints. Some compilers
1803 apparently mutter when there is no cast.
1804
6729cf78
PH
180570. If an address verification called from an ACL failed, and did not produce a
1806 user-specific message (i.e. there was only a "system" message), nothing was
1807 put in $acl_verify_message. In this situation, it now puts the system
1808 message there.
1809
00f00ca5
PH
181071. Change 4.23/11 added synchronization checking at the start of an SMTP
1811 session; change 4.31/43 added the unwanted input to the log line - except
1812 that it did not do this in the start of session case. It now does.
1813
c9bdd01c
PH
181472. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
1815 This is wrong and can cause the other end to generate a synchronization
1816 error if it is another Exim or anything else that does the synchronization
1817 check. A QUIT command is no longer sent after a timeout.
1818
d43194df
PH
181973. $host_lookup_deferred has been added, to make it easier to detect DEFERs
1820 during host lookups.
1821
fe5b5d0b
PH
182274. The defer_ok option of callout verification was not working if it was used
1823 when verifying addresses in header lines, that is, for this case:
1824
1825 verify = header_sender/callout=defer_ok
1826
76a2d7ba
PH
182775. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
1828 those file descriptors could be used for SMTP connections. If anything
1829 wrote to stderr (the example that came up was "warn" in embedded Perl), it
1830 could be sent to the SMTP client, causing chaos. The daemon now opens
1831 stdin, stdout, and stderr to /dev/null when it puts itself into the
1832 background.
1833
183476. Arrange for output from Perl's "warn" command to be written to Exim's main
1835 log by default. The user can override this with suitable Perl magic.
1836
04f7d5b9
PH
183777. The use of log_message on a "discard" ACL verb, which is supposed to add to
1838 the log message when discard triggers, was not working for the DATA ACL or
1839 for the non-SMTP ACL.
1840
bc60667e
PH
184178. Error message wording change in sieve.c.
1842
bb6e88ff
PH
184379. If smtp_accept_max_per_host was set, the number of connections could be
1844 restricted to fewer than expected, because the daemon was trying to set up
1845 a new connection before checking whether the processes handling previous
1846 connections had finished. The check for completed processes is now done
1847 earlier. On busy systems, this bug wouldn't be noticed because something
1848 else would have woken the daemon, and it would have reaped the completed
1849 process earlier.
1850
1e70f85b
PH
185180. If a message was submitted locally by a user whose login name contained one
1852 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
1853 It caused a spool format error. I have fixed the spool reading code. A
1854 related problem was that the "from" clause in the Received: line became
1855 illegal because of the space(s). It is now covered by ${quote_local_part.
1856
185781. Included the latest eximstats from Steve (adds average sizes to HTML Top
1858 tables).
1859
4e01f9d6
PH
186082. Updated OS/Makefile-AIX as per message from Mike Meredith.
1861
1ee1cef2
PH
186283. Patch from Sieve maintainer to fix unterminated string problem in
1863 "vacation" handling.
1864
6e2b4ccc
PH
186584. Some minor changes to the Linux configuration files to help with other
1866 OS variants using glibc.
1867
8e669ac1
PH
186885. One more patch for Sieve to update vacation handling to latest spec.
1869
495ae4b0 1870
bbe902f0
PH
1871----------------------------------------------------
1872See the note above about the 4.44 and 4.50 releases.
1873----------------------------------------------------
1874
1875
1876Exim version 4.44
1877-----------------
1878
1879 1. Change 4.43/35 introduced a bug that caused file counts to be
1880 incorrectly computed when quota_filecount was set in an appendfile
1881 transport
1882
1883 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
1884 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
1885 place.
1886
1887 3. Give more explanation in the error message when the command for a transport
1888 filter fails to execute.
1889
1890 4. There are several places where Exim runs a non-Exim command in a
1891 subprocess. The SIGUSR1 signal should be disabled for these processes. This
1892 was being done only for the command run by the queryprogram router. It is
1893 now done for all such subprocesses. The other cases are: ${run, transport
1894 filters, and the commands run by the lmtp and pipe transports.
1895
1896 5. Some older OS have a limit of 256 on the maximum number of file
1897 descriptors. Exim was using setrlimit() to set 1000 as a large value
1898 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
1899 systems. I've change it so that if it can't get 1000, it tries for 256.
1900
1901 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
1902 was an oversight, and furthermore, ever since the addition of extra
1903 controls (e.g. 4.43/32), the checks on when to allow different forms of
1904 "control" were broken. There should now be diagnostics for all cases when a
1905 control that does not make sense is encountered.
1906
1907 7. $recipients is now available in the predata ACL (oversight).
1908
1909 8. Tidy the search cache before the fork to do a delivery from a message
1910 received from the command line. Otherwise the child will trigger a lookup
1911 failure and thereby defer the delivery if it tries to use (for example) a
1912 cached ldap connection that the parent has called unbind on.
1913
1914 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
1915 of $address_data from the recipient verification was clobbered by the
1916 sender verification.
1917
191810. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
1919 was its contents. (It was OK if the option was not defined at all.)
1920
192111. A "Completed" log line is now written for messages that are removed from
1922 the spool by the -Mrm option.
1923
192412. $host_address is now set to the target address during the checking of
1925 ignore_target_hosts.
1926
192713. When checking ignore_target_hosts for an ipliteral router, no host name was
1928 being passed; this would have caused $sender_host_name to have been used if
1929 matching the list had actually called for a host name (not very likely,
1930 since this list is usually IP addresses). A host name is now passed as
1931 "[x.x.x.x]".
1932
193314. Changed the calls that set up the SIGCHLD handler in the daemon to use the
1934 code that specifies a non-restarting handler (typically sigaction() in
1935 modern systems) in an attempt to fix a rare and obscure crash bug.
1936
193715. Narrowed the window for a race in the daemon that could cause it to ignore
1938 SIGCHLD signals. This is not a major problem, because they are used only to
1939 wake it up if nothing else does.
1940
194116. A malformed maildirsize file could cause Exim to calculate negative values
1942 for the mailbox size or file count. Odd effects could occur as a result.
1943 The maildirsize information is now recalculated if the size or filecount
1944 end up negative.
1945
194617. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
1947 support for a long time. Removed HAVE_SYS_VFS_H.
1948
ea3a6f44 194918. Updated exipick to current release from John Jetmore.
bbe902f0
PH
1950
195119. Allow an empty sender to be matched against a lookup in an address list.
1952 Previously the only cases considered were a regular expression, or an
1953 empty pattern.
1954
195520. Exim went into a mad DNS lookup loop when doing a callout where the
1956 host was specified on the transport, if the DNS lookup yielded more than
1957 one IP address.
1958
ea3a6f44
NM
195921. The RFC2047 encoding function was originally intended for short strings
1960 such as real names; it was not keeping to the 75-character limit for
1961 encoded words that the RFC imposes. It now respects the limit, and
1962 generates multiple encoded words if necessary. To be on the safe side, I
1963 have increased the buffer size for the ${rfc2047: expansion operator from
1964 1024 to 2048 bytes.
bbe902f0 1965
ea3a6f44
NM
196622. Failure to deliver a bounce message always caused it to be frozen, even if
1967 there was an errors_to setting on the router. The errors_to setting is now
1968 respected.
bbe902f0
PH
1969
197023. If an IPv6 address is given for -bh or -bhc, it is now converted to the
1971 canonical form (fully expanded) before being placed in
1972 $sender_host_address.
1973
197424. Updated eximstats to version 1.33
1975
ea3a6f44
NM
197625. Include certificate and key file names in error message when GnuTLS fails
1977 to set them up, because the GnuTLS error message doesn't include the name
1978 of the failing file when there is a problem reading it.
bbe902f0
PH
1979
198026. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 1981 As per change 25.
bbe902f0 1982
ea3a6f44
NM
198327. Reset the locale to "C" after calling embedded Perl, in case it was changed
1984 (this can affect the format of dates).
bbe902f0 1985
ea3a6f44
NM
198628. exim_tidydb, when checking for the continued existence of a message for
1987 which it has found a message-specific retry record, was not finding
1988 messages that were in split spool directories. Consequently, it was
1989 deleting retry records that should have stayed in existence.
bbe902f0
PH
1990
199129. eximstats updated to version 1.35
1992 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
1993 1.35 - bugfix such that pie charts by volume are generated correctly
1994
ea3a6f44
NM
199530. The SPA authentication driver was not abandoning authentication and moving
1996 on to the next authenticator when an expansion was forced to fail,
1997 contradicting the general specification for all authenticators. Instead it
1998 was generating a temporary error. It now behaves as specified.
bbe902f0 1999
ea3a6f44
NM
200031. The default ordering of permitted cipher suites for GnuTLS was pessimal
2001 (the order specifies the preference for clients). The order is now AES256,
2002 AES128, 3DES, ARCFOUR128.
bbe902f0 2003
ea3a6f44
NM
200431. Small patch to Sieve code - explicitly set From: when generating an
2005 autoreply.
bbe902f0 2006
ea3a6f44
NM
200732. Exim crashed if a remote delivery caused a very long error message to be
2008 recorded - for instance if somebody sent an entire SpamAssassin report back
2009 as a large number of 550 error lines. This bug was coincidentally fixed by
2010 increasing the size of one of Exim's internal buffers (big_buffer) that
2011 happened as part of the Exiscan merge. However, to be on the safe side, I
2012 have made the code more robust (and fixed the comments that describe what
2013 is going on).
bbe902f0 2014
ea3a6f44
NM
201533. Some experimental protocols are using DNS PTR records for new purposes. The
2016 keys for these records are domain names, not reversed IP addresses. The
2017 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2018 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2019 CAN-2005-0021
2020
ea3a6f44
NM
202134. The host_aton() function is supposed to be passed a string that is known
2022 to be a valid IP address. However, in the case of IPv6 addresses, it was
2023 not checking this. This is a hostage to fortune. Exim now panics and dies
2024 if the condition is not met. A case was found where this could be provoked
2025 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2026 components; fortuitously, this particular loophole had already been fixed
2027 by change 4.50/55 or 4.44/33 above.
2028
2029 If there are any other similar loopholes, the new check in host_aton()
2030 itself should stop them being exploited. The report I received stated that
2031 data on the command line could provoke the exploit when Exim was running as
2032 exim, but did not say which command line option was involved. All I could
2033 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2034 running as the user.
bbe902f0
PH
2035 CAN-2005-0021
2036
ea3a6f44
NM
203735. There was a buffer overflow vulnerability in the SPA authentication code
2038 (which came originally from the Samba project). I have added a test to the
2039 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2040 CAN-2005-0022
2041
ea3a6f44
NM
204236. The daemon start-up calls getloadavg() while still root for those OS that
2043 need the first call to be done as root, but it missed one case: when
2044 deliver_queue_load_max is set with deliver_drop_privilege. This is
2045 necessary for the benefit of the queue runner, because there is no re-exec
2046 when deliver_drop_privilege is set.
bbe902f0 2047
ea3a6f44
NM
204837. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2049 was in use, was not putting the data itself into the right store pool;
2050 consequently, it could be overwritten for a subsequent message in the same
2051 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2052 the caching.)
bbe902f0 2053
ea3a6f44
NM
205438. Sometimes the final signoff response after QUIT could fail to get
2055 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2056 < 0 before doing a fflush(). This bug looks as though it goes back to the
2057 introduction of TLS in release 3.20, but "sometimes" must have been rare
2058 because the tests only now provoked it.
bbe902f0
PH
2059
2060
495ae4b0
PH
2061Exim version 4.43
2062-----------------
2063
2064 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2065 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2066 Now it returns an integer. A number of calls were still expecting a T/F
2067 return. Fortuitously, in all cases, the tests worked in OK situations,
2068 which is the norm. However, things would have gone wrong on any write
2069 failures on the smtp file descriptor. This function is used when sending
2070 messages over SMTP and also when doing verify callouts.
2071
2072 2. When Exim is called to do synchronous delivery of a locally submitted
2073 message (the -odf or -odi options), it no longer closes stderr before doing
2074 the delivery.
2075
2076 3. Implemented the mua_wrapper option.
2077
2078 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2079
2080 5. Implemented the functions header_remove(), header_testname(),
2081 header_add_at_position(), and receive_remove_recipient(), and exported them
2082 to local_scan().
2083
2084 6. If an ACL "warn" statement specified the addition of headers, Exim already
2085 inserted X-ACL-Warn: at the start if there was no header name. However, it
2086 was not making this test for the second and subsequent header lines if
2087 there were newlines in the string. This meant that an invalid header could
2088 be inserted if Exim was badly configured.
2089
2090 7. Allow an ACL "warn" statement to add header lines at the start or after all
2091 the Received: headers, as well as at the end.
2092
2093 8. Added the rcpt_4xx retry error code.
2094
2095 9. Added postmaster_mailfrom=xxx to callout verification option.
2096
209710. Added mailfrom=xxxx to the callout verification option, for verify=
2098 header_sender only.
2099
210011. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2101 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2102
210312. Inserted some casts to stop certain compilers warning when using pointer
2104 differences as field lengths or precisions in printf-type calls (mostly
2105 affecting debugging statements).
2106
210713. Added optional readline() support for -be (dynamically loaded).
2108
210914. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2110 same clock tick as a message's arrival, so that its received time was the
2111 same as the "first fail" time on the retry record, and that message
2112 remained on the queue past the ultimate address timeout, every queue runner
2113 would try a delivery (because it was past the ultimate address timeout) but
2114 after another failure, the ultimate address timeout, which should have then
2115 bounced the address, did not kick in. This was a "< instead of <=" error;
2116 in most cases the first failure would have been in the next clock tick
2117 after the received time, and all would be well.
2118
211915. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2120 being recognized when the domain list was tested by the match_domain
2121 condition in an expansion string.
2122
212316. Added the ${str2b64: operator.
2124
212517. Exim was always calling setrlimit() to set a large limit for the number of
2126 processes, without checking whether the existing limit was already
2127 adequate. (It did check for the limit on file descriptors.) Furthermore,
2128 errors from getrlimit() and setrlimit() were being ignored. Now they are
2129 logged to the main and panic logs, but Exim does carry on, to try to do its
2130 job under whatever limits there are.
2131
213218. Imported PCRE 5.0.
2133
213419. Trivial typo in log message " temporarily refused connection" (the leading
2135 space).
2136
213720. If the log selector return_path_on_delivery was set and an address was
2138 redirected to /dev/null, the delivery process crashed because it assumed
2139 that a return path would always be set for a "successful" delivery. In this
2140 case, the whole delivery is bypassed as an optimization, and therefore no
2141 return path is set.
2142
214321. Internal re-arrangement: the function for sending a challenge and reading
2144 a response while authentication was assuming a zero-terminated challenge
2145 string. It's now changed to take a pointer and a length, to allow for
2146 binary data in such strings.
2147
214822. Added the cyrus_sasl authenticator (code supplied by MBM).
2149
215023. Exim was not respecting finduser_retries when seeking the login of the
2151 uid under which it was called; it was always trying 10 times. (The default
2152 setting of finduser_retries is zero.) Also, it was sleeping after the final
2153 failure, which is pointless.
2154
215524. Implemented tls_on_connect_ports.
2156
215725. Implemented acl_smtp_predata.
2158
215926. If the domain in control=submission is set empty, Exim assumes that the
2160 authenticated id is a complete email address when it generates From: or
2161 Sender: header lines.
2162
216327. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2164 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2165 chown and chgrp in /bin and hostname in /usr/bin.
2166
216728. Exim was keeping the "process log" file open after each use, just as it
2168 does for the main log. This opens the possibility of it remaining open for
2169 long periods when the USR1 signal hits a daemon. Occasional processlog
2170 errors were reported, that could have been caused by this. Anyway, it seems
2171 much more sensible not to leave this file open at all, so that is what now
2172 happens.
2173
217429. The long-running daemon process does not normally write to the log once it
2175 has entered its main loop, and it closes the log before doing so. This is
2176 so that log files can straightforwardly be renamed and moved. However,
2177 there are a couple of unusual error situations where the daemon does write
2178 log entries, and I had neglected to close the log afterwards.
2179
218030. The text of an SMTP error response that was received during a remote
2181 delivery was being truncated at 512 bytes. This is too short for some of
2182 the long messages that one sometimes sees. I've increased the limit to
2183 1024.
2184
218531. It is now possible to make retry rules that apply only when a message has a
2186 specific sender, in particular, an empty sender.
2187
218832. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2189 it possible to be selective about when SMTP synchronization is enforced.
2190
219133. Added "control = caseful_local_part" and "control = "caselower_local_part".
2192
219332. Implemented hosts_connection_nolog.
2194
219533. Added an ACL for QUIT.
2196
219734. Setting "delay_warning=" to disable warnings was not working; it gave a
2198 syntax error.
2199
220035. Added mailbox_size and mailbox_filecount to appendfile.
2201
220236. Added control = no_multiline_responses to ACLs.
2203
220437. There was a bug in the logic of the code that waits for the clock to tick
2205 in the case where the clock went backwards by a substantial amount such
2206 that the microsecond fraction of "now" was more than the microsecond
2207 fraction of "then" (but the whole seconds number was less).
2208
220938. Added support for the libradius Radius client library this is found on
2210 FreeBSD (previously only the radiusclient library was supported).
2211
2212
2213Exim version 4.42
2214-----------------
2215
2216 1. When certain lookups returned multiple values in the form name=value, the
2217 quoting of the values was not always being done properly. Specifically:
2218 (a) If the value started with a double quote, but contained no whitespace,
2219 it was not quoted.
2220 (b) If the value contained whitespace other than a space character (i.e.
2221 tabs or newlines or carriage returns) it was not quoted.
2222 This fix has been applied to the mysql and pgsql lookups by writing a
2223 separate quoting function and calling it from the lookup code. The fix
2224 should probably also be applied to nisplus, ibase and oracle lookups, but
2225 since I cannot test any of those, I have not disturbed their existing code.
2226
2227 2. A hit in the callout cache for a specific address caused a log line with no
2228 reason for rejecting RCPT. Now it says "Previous (cached) callout
2229 verification failure".
2230
2231 3. There was an off-by-one bug in the queryprogram router. An over-long
2232 return line was truncated at 256 instead of 255 characters, thereby
2233 overflowing its buffer with the terminating zero. As well as fixing this, I
2234 have increased the buffer size to 1024 (and made a note to document this).
2235
2236 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2237 when Exim is waiting for an SMTP response from a remote server, Exim
2238 restarts its select() call on the socket, thereby resetting its timeout.
2239 This is not a problem when such interrupts are rare. Somebody set up a cron
2240 job to run exiwhat every 2 minutes, which is less than the normal select()
2241 timeout (5 or 10 minutes). This meant that the select() timeout never
2242 kicked in because it was always reset. I have fixed this by comparing the
2243 time when an interrupt arrives with the time at the start of the first call
2244 to select(). If more time than the timeout has elapsed, the interrupt is
2245 treated as a timeout.
2246
2247 5. Some internal re-factoring in preparation for the addition of Sieve
2248 extensions (by MH). In particular, the "personal" test is moved to a
2249 separate function, and given an option for scanning Cc: and Bcc: (which is
2250 not set for Exim filters).
2251
2252 6. When Exim created an email address using the login of the caller as the
2253 local part (e.g. when creating a From: or Sender: header line), it was not
2254 quoting the local part when it contained special characters such as @.
2255
2256 7. Installed new OpenBSD configuration files.
2257
2258 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2259 try to make them clearer.
2260
2261 9. Callout options, other than the timeout value, were being ignored when
2262 verifying sender addresses in header lines. For example, when using
2263
2264 verify = header_sender/callout=no_cache
2265
2266 the cache was (incorrectly) being used.
2267
226810. Added a missing instance of ${EXE} to the exim_install script; this affects
2269 only the Cygwin environment.
2270
227111. When return_path_on_delivery was set as a log selector, if different remote
2272 addresses in the same message used different return paths and parallel
2273 remote delivery occurred, the wrong values would sometimes be logged.
2274 (Whenever a remote delivery process finished, the return path value from
2275 the most recently started remote delivery process was logged.)
2276
227712. RFC 3848 specifies standard names for the "with" phrase in Received: header
2278 lines when AUTH and/or TLS are in use. This is the "received protocol"
2279 field. Exim used to use "asmtp" for authenticated SMTP, without any
2280 indication (in the protocol name) for TLS use. Now it follows the RFC and
2281 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2282 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2283 names appear in log lines as well as in Received: header lines.
2284
228513. Installed MH's patches for Sieve to add the "copy" and "vacation"
2286 extensions, and comparison tests, and to fix some bugs.
2287
228814. Changes to the "personal" filter test:
2289
2290 (1) The test was buggy in that it was just doing the equivalent of
2291 "contains" tests on header lines. For example, if a user's address was
2292 anne@some.where, the "personal" test would incorrectly be true for
2293
2294 To: susanne@some.where
2295
2296 This test is now done by extracting each address from the header in turn,
2297 and checking the entire address. Other tests that are part of "personal"
2298 are now done using regular expressions (for example, to check local parts
2299 of addresses in From: header lines).
2300
2301 (2) The list of non-personal local parts in From: addresses has been
2302 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2303 taken from the Sieve specification recommendations.
2304
2305 (3) If the message contains any header line starting with "List-" it is
2306 treated as non-personal.
2307
2308 (4) The test for "circular" in the Subject: header line has been removed
2309 because it now seems ill-conceived.
2310
231115. Minor typos in src/EDITME comments corrected.
2312
231316. Installed latest exipick from John Jetmore.
2314
231517. If headers_add on a router specified a text string that was too long for
2316 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2317 of string_sprintf() is now avoided.
2318
231918. $message_body_size was not set (it was always zero) when running the DATA
2320 ACL and the local_scan() function.
2321
232219. For the "mail" command in an Exim filter, no default was being set for
2323 the once_repeat time, causing a random time value to be used if "once" was
2324 specified. (If the value happened to be <= 0, no repeat happened.) The
2325 default is now 0s, meaning "never repeat". The "vacation" command was OK
2326 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2327 (I found it when inspecting the code).
2328
232920. There is now an overall timeout for performing a callout verification. It
2330 defaults to 4 times the callout timeout, which applies to individual SMTP
2331 commands during the callout. The overall timeout applies when there is more
2332 than one host that can be tried. The timeout is checked before trying the
2333 next host. This prevents very long delays if there are a large number of
2334 hosts and all are timing out (e.g. when the network connections are timing
2335 out). The value of the overall timeout can be changed by specifying an
2336 additional sub-option for "callout", called "maxwait". For example:
2337
2338 verify = sender/callout=5s,maxwait=20s
2339
234021. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2341 to the end before writing, but this should make it even safer).
2342
234322. Exim was forgetting that it had advertised PIPELINING for the second and
2344 subsequent messages on an SMTP connection. It was also not resetting its
2345 memory on STARTTLS and an internal HELO.
2346
234723. When Exim logs an SMTP synchronization error within a session, it now
2348 records whether PIPELINING has been advertised or not.
2349
235024. Added 3 instances of "(long int)" casts to time_t variables that were being
2351 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2352 rather than long int.
2353
235425. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2355
235626. Added the never_mail option to autoreply.
2357
2358
2359Exim version 4.41
2360-----------------
2361
2362 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2363 crash if the getsockname() call failed; this can happen if a connection is
2364 closed very soon after it is established. The problem was simply in the
2365 order in which certain operations were done, causing Exim to try to write
2366 to the SMTP stream before it had set up the file descriptor. The bug has
2367 been fixed by making things happen in the correct order.
2368
2369
2370Exim version 4.40
2371-----------------
2372
2373 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2374 before the connection was closed, thus losing the rejection response.
2375
2376 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2377 some early Solaris releases, but causes trouble in current releases where
2378 socklen_t is defined.
2379
2380 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2381 always exist.
2382
2383 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2384 configured.
2385
2386 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2387 that releasing the top of it at the end releases what was used for sub-
2388 expansions (unless the block got too big). However, discard this block if
2389 the first thing is a variable or header, so that we can use its block when
2390 it is dynamic (useful for very large $message_headers, for example).
2391
2392 6. Lookups now cache *every* query, not just the most recent. A new, separate
2393 store pool is used for this. It can be recovered when all lookup caches are
2394 flushed. Lookups now release memory at the end of their result strings.
2395 This has involved some general refactoring of the lookup sources.
2396
2397 7. Some code has been added to the store_xxx() functions to reduce the amount
2398 of flapping under certain conditions.
2399
2400 8. log_incoming_interface used to affect only the <= reception log lines. Now
2401 it causes the local interface and port to be added to several more SMTP log
2402 lines, for example "SMTP connection from", and rejection lines.
2403
2404 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2405
240610. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2407
240811. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2409 could be overwritten at the end of the current message (or the start of a
2410 new message if it was set in a HELO ACL). The value is now preserved for
2411 the duration of the SMTP connection.
2412
241312. If a transport had a headers_rewrite setting, and a matching header line
2414 contained an unqualified address, that address was qualified, even if it
2415 did not match any rewriting rules. The underlying bug was that the values
2416 of the flags that permit the existence of unqualified sender and recipient
2417 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2418 non-local messages, and by -bnq for local messages) were not being
2419 preserved with the message after it was received.
2420
242113. When Exim was logging an SMTP synchronization error, it could sometimes log
2422 "next input=" as part of the text comprising the host identity instead of
2423 the correct text. The code was using the same buffer for two different
2424 strings. However, depending on which order the printing function evaluated
2425 its arguments, the bug did not always show up. Under Linux, for example, my
2426 test suite worked just fine.
2427
242814. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2429 doesn't work with some older versions of Perl. It has been changed to "my",
2430 which in any case is probably the better facility to use.
2431
243215. A really picky compiler found some instances of statements for creating
2433 error messages that either had too many or two few arguments for the format
2434 string.
2435
243616. The size of the buffer for calls to the DNS resolver has been increased
2437 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2438 for addresses that have a lot of PTR records. This alleviates a problem; it
2439 does not fully solve it.
2440
244117. A dnsdb lookup for PTR records that receives more data than will fit in the
2442 buffer now truncates the list and logs the incident, which is the same
2443 action as happens when Exim is looking up a host name and its aliases.
2444 Previously in this situation something unpredictable would happen;
2445 sometimes it was "internal error: store_reset failed".
2446
244718. If a server dropped the connection unexpectedly when an Exim client was
2448 using GnuTLS and trying to read a response, the client delivery process
2449 crashed while trying to generate an error log message.
2450
245119. If a "warn" verb in an ACL added multiple headers to a message in a single
2452 string, for example:
2453
2454 warn message = H1: something\nH2: something
2455
2456 the text was added as a single header line from Exim's point of view
2457 though it ended up OK in the delivered message. However, searching for the
2458 second and subsequent header lines using $h_h2: did not work. This has been
2459 fixed. Similarly, if a system filter added multiple headers in this way,
2460 the routers could not see them.
2461
246220. Expanded the error message when iplsearch is called with an invalid key to
2463 suggest using net-iplsearch in a host list.
2464
246521. When running tests using -bh, any delays imposed by "delay" modifiers in
2466 ACLs are no longer actually imposed (and a message to that effect is
2467 output).
2468
246922. If a "gecos" field in a passwd entry contained escaped characters, in
2470 particular, if it contained a \" sequence, Exim got it wrong when building
2471 a From: or a Sender: header from that name. A second bug also caused
2472 incorrect handling when an unquoted " was present following a character
2473 that needed quoting.
2474
247523. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
2476 was not being matched caselessly.
2477
247824. Arranged for all hyphens in the exim.8 source to be escaped with
2479 backslashes.
2480
248125. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
2482 properly. Recipient callout cache records were still being keyed to include
2483 the sender, even when use_sender was set false. This led to far more
2484 callouts that were necessary. The sender is no longer included in the key
2485 when use_sender is false.
2486
248726. Added "control = submission" modifier to ACLs.
2488
248927. Added the ${base62d: operator to decode base 62 numbers.
2490
249128. dnsdb lookups can now access SRV records.
2492
249329. CONFIGURE_OWNER can be set at build time to define an alternative owner for
2494 the configuration file.
2495
249630. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
2497 (-v) mode. This makes the output for a verbose queue run more intelligible.
2498
249931. Added a use_postmaster feature to recipient callouts.
2500
250132. Added the $body_zerocount variable, containing the number of binary zero
2502 bytes in the message body.
2503
250433. The time of last modification of the "new" subdirectory is now used as the
2505 "mailbox time last read" when there is a quota error for a maildir
2506 delivery.
2507
250834. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
2509
251035. Added +ignore_unknown as a special item in host lists.
2511
251236. Code for decoding IPv6 addresses in host lists is now included, even if
2513 IPv6 support is not being compiled. This fixes a bug in which an IPv6
2514 address was recognized as an IP address, but was then not correctly decoded
2515 into binary, causing unexpected and incorrect effects when compared with
2516 another IP address.
2517
2518
2519Exim version 4.34
2520-----------------
2521
2522 1. Very minor rewording of debugging text in manualroute to say "list of
2523 hosts" instead of "hostlist".
2524
2525 2. If verify=header_syntax was set, and a header line with an unqualified
2526 address (no domain) and a large number of spaces between the end of the
2527 name and the colon was received, the reception process suffered a buffer
2528 overflow, and (when I tested it) crashed. This was caused by some obsolete
2529 code that should have been removed. The fix is to remove it!
2530
2531 3. When running in the test harness, delay a bit after writing a bounce
2532 message to get a bit more predictability in the log output.
2533
2534 4. Added a call to search_tidyup() just before forking a reception process. In
2535 theory, someone could use a lookup in the expansion of smtp_accept_max_
2536 per_host which, without the tidyup, could leave open a database connection.
2537
2538 5. Added the variables $recipient_data and $sender_data which get set from a
2539 lookup success in an ACL "recipients" or "senders" condition, or a router
2540 "senders" option, similar to $domain_data and $local_part_data.
2541
2542 6. Moved the writing of debug_print from before to after the "senders" test
2543 for routers.
2544
2545 7. Change 4.31/66 (moving the time when the Received: is generated) caused
2546 problems for message scanning, either using a data ACL, or using
2547 local_scan() because the Received: header was not generated till after they
2548 were called (in order to set the time as the time of reception completion).
2549 I have revised the way this works. The header is now generated after the
2550 body is received, but before the ACL or local_scan() are called. After they
2551 are run, the timestamp in the header is updated.
2552
2553
2554Exim version 4.33
2555-----------------
2556
2557 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
2558 before starting a queue runner without re-exec. This happened only when
2559 deliver_drop_privilege was set or when the Exim user was set to root. The
2560 effect of the bug was that timeouts during subsequent deliveries caused
2561 crashes instead of being properly handled. The handler is now left at its
2562 default (and expected) setting.
2563
2564 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
2565 message, again when deliver_drop_privilege is set or Exim is run as root.
2566 The bug described in (1) was not present in this case, but the tidying up
2567 of the other signals was missing. I have made the two cases consistent.
2568
2569 3. The ignore_target_hosts setting on a manualroute router was being ignored
2570 for hosts that were looked up using the /MX notation.
2571
2572 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
2573 in domain lists.
2574
2575 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
2576 operated on the sender address. After changing the $sender_address to <>
2577 for the sender address verify, Exim was re-instated it as the original
2578 (before rewriting) address, but remembering that it had rewritten it, so it
2579 wasn't rewriting it again. This bug also had the effect of breaking the
2580 sender address verification caching when the sender address was rewritten.
2581
2582 6. The ignore_target_hosts option was being ignored by the ipliteral router.
2583 This has been changed so that if the ip literal address matches
2584 ignore_target_hosts, the router declines.
2585
2586 7. Added expansion conditions match_domain, match_address, and match_local_
2587 part (NOT match_host).
2588
2589 8. The placeholder for the Received: header didn't have a length field set.
2590
2591 9. Added code to Exim itself and to exim_lock to test for a specific race
2592 condition that could lead to file corruption when using MBX delivery. The
2593 issue is with the lockfile that is created in /tmp. If this file is removed
2594 after a process has opened it but before that process has acquired a lock,
2595 there is the potential for a second process to recreate the file and also
2596 acquire a lock. This could lead to two Exim processes writing to the file
2597 at the same time. The added code performs the same test as UW imapd; it
2598 checks after acquiring the lock that its file descriptor still refers to
2599 the same named file.
2600
260110. The buffer for building added header lines was of fixed size, 8192 bytes.
2602 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
2603 when Exim is built.
2604
260511. Added the smtp_active_hostname option. If used, this will typically be made
2606 to depend on the incoming interface address. Because $interface_address is
2607 not set up until the daemon has forked a reception process, error responses
2608 that can happen earlier (such as "too many connections") no longer contain
2609 a host name.
2610
261112. If an expansion in a condition on a "warn" statement fails because a lookup
2612 defers, the "warn" statement is abandoned, and the next ACL statement is
2613 processed. Previously this caused the whole ACL to be aborted.
2614
261513. Added the iplsearch lookup type.
2616
261714. Added ident_timeout as a log selector.
2618
261915. Added tls_certificate_verified as a log selector.
2620
262116. Added a global option tls_require_ciphers (compare the smtp transport
2622 option of the same name). This controls incoming TLS connections.
2623
262417. I finally figured out how to make tls_require_ciphers do a similar thing
2625 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
2626 before starting the TLS session.
2627
262818. Tabs are now shown as \t in -bP output.
2629
263019. If the log selector return_path_on_delivery was set, Exim crashed when
2631 bouncing a message because it had too many Received: header lines.
2632
263320. If two routers both had headers_remove settings, and the first one included
2634 a superfluous trailing colon, the final name in the first list and the
2635 first name in the second list were incorrectly joined into one item (with a
2636 colon in the middle).
2637
2638
2639Exim version 4.32
2640-----------------
2641
2642 1. Added -C and -D options to the exinext utility, mainly to make it easier
2643 to include in the automated testing, but these could be helpful when
2644 multiple configurations are in use.
2645
2646 2. The exinext utility was not formatting the output nicely when there was
2647 an alternate port involved in the retry record key, nor when there was a
2648 message id as well (for retries that were specific to a specific message
2649 and a specific host). It was also confused by IPv6 addresses, because of
2650 the additional colons they contain. I have fixed the IPv4 problem, and
2651 patched it up to do a reasonable job for IPv6.
2652
2653 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
2654 delivery, the log line now contains "pipelined" if PIPELINING was used.
2655
2656 4. An SMTP transport process used to panic and die if the bind() call to set
2657 an explicit outgoing interface failed. This has been changed; it is now
2658 treated in the same way as a connect() failure.
2659
2660 5. A reference to $sender_host_name in the part of a conditional expansion
2661 that was being skipped was still causing a DNS lookup. This no longer
2662 occurs.
2663
2664 6. The def: expansion condition was not recognizing references to header lines
2665 that used bh_ and bheader_.
2666
2667 7. Added the _cache feature to named lists.
2668
2669 8. The code for checking quota_filecount in the appendfile transport was
2670 allowing one more file than it should have been.
2671
2672 9. For compatibility with Sendmail, the command line option
2673
2674 -prval:sval
2675
2676 is equivalent to
2677
2678 -oMr rval -oMs sval
2679
2680 and sets the incoming protocol and host name (for trusted callers). The
2681 host name and its colon can be omitted when only the protocol is to be set.
2682 Note the Exim already has two private options, -pd and -ps, that refer to
2683 embedded Perl. It is therefore impossible to set a protocol value of "d" or
2684 "s", but I don't think that's a major issue.
2685
268610. A number of refactoring changes to the code, none of which should affect
2687 Exim's behaviour:
2688
2689 (a) The number of logging options was getting close to filling up the
2690 32-bit word that was used as a bit map. I have split them into two classes:
2691 those that are passed in the argument to log_write(), and those that are
2692 only ever tested independently outside of that function. These are now in
2693 separate 32-bit words, so there is plenty of room for expansion again.
2694 There is no change in the user interface or the logging behaviour.
2695
2696 (b) When building, for example, log lines, the code previously used a
2697 macro that called string_cat() twice, in order to add two strings. This is
2698 not really sufficiently general. Furthermore, there was one instance where
2699 it was actually wrong because one of the argument was used twice, and in
2700 one call a function was used. (As it happened, calling the function twice
2701 did not affect the overall behaviour.) The macro has been replaced by a
2702 function that can join an arbitrary number of extra strings onto a growing
2703 string.
2704
2705 (c) The code for expansion conditions now uses a table and a binary chop
2706 instead of a serial search (which was left over from when there were very
2707 few conditions). Also, it now recognizes conditions like "pam" even when
2708 the relevant support is not compiled in: a suitably worded error message is
2709 given if an attempt is made to use such a condition.
2710
271111. Added ${time_interval:xxxxx}.
2712
271312. A bug was causing one of the ddress fields not to be passed back correctly
2714 from remote delivery subprocesses. The field in question was not being
2715 subsequently used, so this caused to problems in practice.
2716
271713. Added new log selectors queue_time and deliver_time.
2718
271914. Might have fixed a bug in maildirsizefile handling that threw up
2720 "unexpected character" debug warnings, and recalculated the data
2721 unnecessarily. In any case, I expanded the warning message to give more
2722 information.
2723
272415. Added the message "Restricted characters in address" to the statements in
2725 the default ACL that block characters like @ and % in local parts.
2726
272716. Change 71 for release 4.31 proved to be much less benign that I imagined.
2728 Three changes have been made:
2729
2730 (a) There was a serious bug; a negative response to MAIL caused the whole
2731 recipient domain to be cached as invalid, thereby blocking all messages
2732 to all local parts at the same domain, from all senders. This bug has
2733 been fixed. The domain is no longer cached after a negative response to
2734 MAIL if the sender used is not empty.
2735
2736 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
2737 been restored.
2738
2739 (c) A new callout option, "use_sender" has been added for people who want
2740 the modified behaviour.
2741
2742
2743Exim version 4.31
2744-----------------
2745
2746 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
2747 Larry Rosenman.
2748
2749 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
2750 indeed breaks things for older releases.
2751
2752 3. Added additional logging to the case where there is a problem reading data
2753 from a filter that is running in a subprocess using a pipe, in order to
2754 try to track down a specific problem.
2755
2756 4. Testing facility fudge: when running in the test harness and attempting
2757 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
2758 getting "No route to host". Convert this to a timeout.
2759
2760 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
2761 warning.
2762
2763 6. Some OS don't have socklen_t but use size_t instead. This affects the
2764 fifth argument of getsockopt() amongst other things. This is now
2765 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
2766 can be set for individual OS. I have set it for SunOS5, OSF1, and
2767 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
2768 some earlier ones do not.
2769
2770 7. Change 4.30/15 was not doing the test caselessly.
2771
2772 8. The standard form for an IPv6 address literal was being rejected by address
2773 parsing in, for example, MAIL and RCPT commands. An example of this kind of
2774 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
2775 this, as well as the form without the "IPv6" on the front (but only when
2776 address literals are enabled, of course).
2777
2778 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
2779
278010. Exim crashed if a message with an empty sender address specified by -f
2781 encountered a router with an errors_to setting. This could be provoked only
2782 by a command such as
2783
2784 exim -f "" ...
2785
2786 where an empty string was supplied; "<>" did not hit this bug.
2787
278811. Installed PCRE release 4.5.
2789
279012. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
2791 remained set. It is now erased.
2792
279313. exiqgrep wasn't working on MacOS X because it didn't correctly compute
2794 times from message ids (which are base 36 rather than the normal 62).
2795
279614. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
2797 were being counted as actual protocol errors, and logged if the log
2798 selector +smtp_protocol_error was set. One cannot be perfect in this test,
2799 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
2800 and DATA following a set of rejected RCPTs do not count as protocol errors.
2801 In other words, Exim assumes they were pipelined, though this may not
2802 actually be the case. Of course, in all cases the client gets an
2803 appropriate error code.
2804
280515. If a lookup fails in an ACL condition, a message about the failure may
2806 be available; it is used if testing the ACL cannot continue, because most
2807 such messages specify what the cause of the deferral is. However, some
2808 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
2809 that caused an old message to be retained and used if a later statement
2810 caused a defer, replacing the real cause of the deferral.
2811
281216. If an IP address had so many PTR records that the DNS lookup buffer
2813 was not large enough to hold them, Exim could crash while trying to process
2814 the truncated data. It now detects and logs this case.
2815
281617. Further to 4.21/58, another change has been made: if (and only if) the
2817 first line of a message (the first header line) ends with CRLF, a bare LF
2818 in a subsequent header line has a space inserted after it, so as not to
2819 terminate the header.
2820
282118. Refactoring: tidied an ugly bit of code in appendfile that copied data
2822 unnecessarily, used atoi() instead of strtol(), and didn't check the
2823 termination when getting file sizes from file names by regex.
2824
282519. Completely re-implemented the support for maildirsize files, in the light
2826 of a number of problems with the previous contributed implementation
2827 (4.30/29). In particular:
2828
2829 . If the quota is zero, the maildirsize file is maintained, but no quota is
2830 imposed.
2831
2832 . If the maildir directory does not exist, it is created before any attempt
2833 to write a maildirsize file.
2834
2835 . The quota value in the file is just a cache; if the quota is changed in
2836 the transport, the new value overrides.
2837
2838 . A regular expression is available for excluding directories from the
2839 count.
2840
284120. The autoreply transport checks the characters in options that define the
2842 message's headers; it allows continued headers, but it was checking with
2843 isspace() after an embedded newline instead of explicitly looking for a
2844 space or a tab.
2845
284621. If all the "regular" hosts to which an address was routed had passed their
2847 expiry times, and had not reached their retry times, the address was
2848 bounced, even if fallback hosts were defined. Now Exim should go on to try
2849 the fallback hosts.
2850
285122. Increased buffer sizes in the callout code from 1024 to 4096 to match the
2852 equivalent code in the SMTP transport. Some hosts send humungous responses
2853 to HELO/EHLO, more than 1024 it seems.
2854
285523. Refactoring: code in filter.c used (void *) for "any old type" but this
2856 gives compiler warnings in some environments. I've now done it "properly",
2857 using a union.
2858
285924. The replacement for inet_ntoa() that is used with gcc on IRIX systems
2860 (because of problems with the built-in one) was declared to return uschar *
2861 instead of char *, causing compiler failure.
2862
286325. Fixed a file descriptor leak when processing alias/forward files.
2864
286526. Fixed a minor format string issue in dbfn.c.
2866
286727. Typo in exim.c: ("dmbnz" for "dbmnz").
2868
286928. If a filter file refered to $h_xxx or $message_headers, and the headers
2870 contained RFC 2047 "words", Exim's memory could, under certain conditions,
2871 become corrupted.
2872
287329. When a sender address is verified, it is cached, to save repeating the test
2874 when there is more than one recipient in a message. However, when the
2875 verification involves a callout, it is possible for different callout
2876 options to be set for different recipients. It is too complicated to keep
2877 track of this in the cache, so now Exim always runs a verification when a
2878 callout is required, relying on the callout cache for the optimization.
2879 The overhead is duplication of the address routing, but this should not be
2880 too great.
2881
288230. Fixed a bug in callout caching. If a RCPT command caused the sender address
2883 to be verified with callout=postmaster, and the main callout worked but the
2884 postmaster check failed, the verification correctly failed. However, if a
2885 subsequent RCPT command asked for sender verification *without* the
2886 postmaster check, incorrect caching caused this verification also to fail,
2887 incorrectly.
2888
288931. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
2890 it was not caching the DNS options (qualify_single, search_parents) that
2891 were used when the lookup failed. A subsequent lookup with different
2892 options therefore always gave the same answer, though there were cases
2893 where it should not have. (Example: a "domains = !$mx_any" option on a
2894 dnslookup router: the "domains" option is always processed without any
2895 widening, but the router might have qualify_single set.) Now Exim uses the
2896 cached value only when the same options are set.
2897
289832. Added John Jetmore's "exipick" utility to the distribution.
2899
290033. GnuTLS: When an attempt to start a TLS session fails for any reason other
2901 than a timeout (e.g. a certificate is required, and is not provided), an
2902 Exim server now closes the connection immediately. Previously it waited for
2903 the client to close - but if the client is SSL, it seems that they each
2904 wait for each other, leading to a delay before one of them times out.
2905
290634: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
2907 maintained 0.8.x compatibility because I don't think many are using it, and
2908 it is clearly obsolete.
2909
291035. Added TLS support for CRLs: a tls_crl global option and one for the smtp
2911 transport.
2912
291336. OpenSSL: $tls_certificate_verified was being set to 1 even if the
2914 client certificate was expired. A simple patch fixes this, though I don't
2915 understand the full logic of why the verify callback is called multiple
2916 times.
2917
291837. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
2919 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
2920 which causes problems with some clients (such as the Certicom SSL Plus
2921 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
2922 disables the coutermeasure allowing Eudora to connect."
2923
292438. Exim was not checking that a write() to a log file succeeded. This could
2925 lead to Bad Things if a log got too big, in particular if it hit a file
2926 size limit. Exim now panics and dies if it cannot write to a log file, just
2927 as it does if it cannot open a log file.
2928
292939. Modified OS/Makefile-Linux so that it now contains
2930
2931 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
2932
2933 The two -D definitions ensure that Exim is compiled with large file
2934 support, which makes it possible to handle log files that are bigger than
2935 2^31.
2936
293740. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
2938 instance) a domain was checked against a named list that involved a lookup,
2939 causing $domain_data to be set, then another domain was checked against the
2940 same list, then the first domain was re-checked, the value of $domain_data
2941 after the final check could be wrong. In particular, if the second check
2942 failed, it could be set empty. This bug probably also applied to
2943 $localpart_data.
2944
294541. The strip_trailing_dot option was not being applied to the address given
2946 with the -f command-line option.
2947
294842. The code for reading a message's header from the spool was incrementing
2949 $received_count, but never initializing it. This meant that the value was
2950 incorrect (doubled) while delivering a message in the same process in which
2951 it was received. In the most common configuration of Exim, this never
2952 happens - a fresh exec is done - but it can happen when
2953 deliver_drop_privilege is set.
2954
295543. When Exim logs an SMTP synchronization error - client data sent too soon -
2956 it now includes up to 150 characters of the unexpected data in the log
2957 line.
2958
295944. The exim_dbmbuild utility uses fixed size buffers for reading input lines
2960 and building data strings. The size of both of these buffers was 10 000
2961 bytes - far larger than anybody would *ever* want, thought I. Needless to
2962 say, somebody hit the limit. I have increased the maximum line length to
2963 20 000 and the maximum data length of concatenated lines to 100 000. I have
2964 also fixed two bugs, because there was no checking on these buffers. Tsk,
2965 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
2966 buffer is too small.
2967
296845. The exim_dbmbuild utility did not support quoted keys, as Exim does in
2969 lsearch lookups. Now it does.
2970
297146. When parsing a route_list item in a manualroute router, a fixed-length
2972 buffer was used for the list of hosts. I made this 1024 bytes long,
2973 thinking that nobody would ever have a list of hosts that long. Wrong.
2974 Somebody had a whole pile of complicated expansion conditions, and the
2975 string was silently truncated, leading to an expansion error. It turns out
2976 that it is easier to change to an unlimited length (owing to other changes
2977 that have happened since this code was originally written) than to build
2978 structure for giving a limitation error. The length of the item that
2979 expands into the list of hosts is now unlimited.
2980
298147. The lsearch lookup could not handle data where the length of text line was
2982 more than 4095 characters. Such lines were truncated, leading to shortened
2983 data being returned. It should now handle lines of any length.
2984
298548. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
2986 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
2987 ACL").
2988
298949. Cosmetic tidy to scripts like exicyclog that are generated by globally
2990 replacing strings such as BIN_DIRECTORY in a source file: the replacement
2991 no longer happens in comment lines. A list of replacements is now placed
2992 at the head of all of the source files, except those whose only change is
2993 to replace PERL_COMMAND in the very first #! line.
2994
299550. Replaced the slow insertion sort in queue.c, for sorting the list of
2996 messages on the queue, with a bottom-up merge sort, using code contributed
2997 by Michael Haardt. This should make operations like -bp somewhat faster on
2998 large queues. It won't affect queue runners, except when queue_run_in_order
2999 is set.
3000
300151. Installed eximstats 1.31 in the distribution.
3002
300352. Added support for SRV lookups to the dnslookup router.
3004
300553. If an ACL referred to $message_body or $message_body_end, the value was not
3006 reset for any messages that followed in the same SMTP session.
3007
300854. The store-handling optimization for building very long strings was not
3009 differentiating between the different store pools. I don't think this
3010 actually made any difference in practice, but I've tidied it.
3011
301255. While running the routers to verify a sender address, $sender_address
3013 was still set to the sender address. This is wrong, because when routing to
3014 send a bounce to the sender, it would be empty. Therefore, I have changed
3015 it so that, while verifying a sender address, $sender_address is set to <>.
3016 (There is no change to what happens when verifying a recipient address.)
3017
301856. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3019 target A or AAAA records (if not already returned) without resetting the
3020 qualify_single or search_parents options of the DNS resolver. These are
3021 inappropriate in this case because the targets of MX and SRV records must
3022 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3023 target that, when qualified, matched something in the local domain. These
3024 two options are now turned off when doing these lookups.
3025
302657. It seems that at least some releases of Reiserfs (which does not have the
3027 concept of a fixed number of inodes) returns zero and not -1 for the
3028 number of available inodes. This interacted badly with check_spool_inodes,
3029 which assumed that -1 was the "no such thing" setting. What I have done is
3030 to check that the total number of inodes is greater than zero before doing
3031 the test of how many are available.
3032
303358. When a "warn" ACL statement has a log_message modifier, the message is
3034 remembered, and not repeated. This is to avoid a lot of repetition when a
3035 message has many recipients that cause the same warning to be written.
3036 Howewer, Exim was preserving the list of already written lines for an
3037 entire SMTP session, which doesn't seem right. The memory is now reset if a
3038 new message is started.
3039
304059. The "rewrite" debugging flag was not showing the result of rewriting in the
3041 debugging output unless log_rewrite was also set.
3042
304360. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
3044 of (int)(handle) when we know that handle contains (void *)(-1).
3045
304661. The Exim daemon panic-logs an error return when it closes the incoming
3047 connection. However "connection reset by peer" seems to be common, and
3048 isn't really an error worthy of noting specially, so that particular error
3049 is no long logged.
3050
305162. When Exim is trying to find all the local interfaces, it used to panic and
3052 die if the ioctl to get the interface flags failed. However, it seems that
3053 on at least one OS (Solaris 9) it is possible to have an interface that is
3054 included in the list of interfaces, but for which you get a failure error
3055 for this call. This happens when the interface is not "plumbed" into a
3056 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
3057 failure of the "get flags" call assumes that the interface is down.
3058
305963. Added a ${eval10: operator, which assumes all numbers are decimal. This
3060 makes life easier for people who are doing arithmetic on fields extracted
3061 from dates, where you often get leading zeros that should not be
3062 interpreted as octal.
3063
306464. Added qualify_domain to the redirect router, to override the global
3065 setting.
3066
306765. If a pathologically long header line contained very many addresses (the
3068 report of this problem mentioned 10 000) and each of them was rewritten,
3069 Exim could use up a very large amount of memory. (It kept on making new
3070 copies of the header line as it rewrote, and never released the old ones.)
3071 At the expense of a bit more processing, the header rewriting function has
3072 been changed so that it no longer eats memory in this way.
3073
307466. The generation of the Received: header has been moved from the time that a
3075 message starts to be received, to the time that it finishes. The timestamp
3076 in the Received: header should now be very close to that of the <= log
3077 line. There are two side-effects of this change:
3078
3079 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
3080 logged header lines no longer include the local Received: line, because
3081 it has not yet been created. The same applies to a copy of the message
3082 that is returned to a non-SMTP sender when a message is rejected.
3083
3084 (b) When a filter file is tested using -bf, no additional Received: header
3085 is added to the test message. After some thought, I decided that this
3086 is a bug fix.
3087
3088 This change does not affect the value of $received_for. It is still set
3089 after address rewriting, but before local_scan() is called.
3090
309167. Installed the latest Cygwin-specific files from the Cygwin maintainer.
3092
309368. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
3094 gave an unhelpful panic error message, and a defer error. I have managed to
3095 change this behaviour so that it now rejects any supplied certificate,
3096 which seems right, as the list of acceptable certificates is empty.
3097
309869. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
3099 gave an unhelpful defer error. I have not managed to make this reject any
3100 supplied certificates, but the error message it gives is "no certificate
3101 supplied", which is not helpful.
3102
310370. exigrep's output now also includes lines that are not associated with any
3104 message, but which match the given pattern. Implemented by a patch from
3105 Martin Sluka, which also tidied up the Perl a bit.
3106
310771. Recipient callout verification, like sender verification, was using <> in
3108 the MAIL FROM command. This isn't really the right thing, since the actual
3109 sender may affect whether the remote host accepts the recipient or not. I
3110 have changed it to use the actual sender in the callout; this means that
3111 the cache record is now keyed on a recipient/sender pair, not just the
3112 recipient address. There doesn't seem to be a real danger of callout loops,
3113 since a callout by the remote host to check the sender would use <>.
3114 [SEE ABOVE: changed after hitting problems.]
3115
311672. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
3117 temporary errors. However, in the case of such a code being given after
3118 the end of a data transmission (i.e. after ".") Exim was failing to write
3119 a retry record for the message. (Yes, there was some broken host that was
3120 actually sending 8xx at this point.)
3121
312273. An unknown lookup type in a host list could cause Exim to panic-die when
3123 the list was checked. (An example that provoked this was putting <; in the
3124 middle of a list instead of at the start.) If this happened during a DATA
3125 ACL check, a -D file could be left lying around. This kind of configuration
3126 error no longer causes Exim to die; instead it causes a defer errror. The
3127 incident is still logged to the main and panic logs.
3128
312974. Buglet left over from Exim 3 conversion. The message "too many messages
3130 in one connection" was written to the rejectlog but not the mainlog, except
3131 when address rewriting (yes!) was being logged.
3132
313375. Added write_rejectlog option.
3134
313576. When a system filter was run not as root (that is, when system_filter_user
3136 was set), the values of the $n variables were not being returned to the
3137 main process; thus, they were not subsequently available in the $sn
3138 variables.
3139
314077. Added +return_path_on_delivery log selector.
3141
314278. A connection timeout was being treated differently from recipients deferred
3143 when testing hosts_max_try with a message that was older than the host's
3144 retry timeout. (The host should not be counted, thus allowing all hosts to
3145 be tried at least once before bouncing.) This may have been the cause of an
3146 occasionally reported bug whereby a message would remain on the queue
3147 longer than the retry timeout, but would be bounced if a delivery was
3148 forced. I say "may" because I never totally pinned down the problem;
3149 setting up timeout/retry tests is difficult. See also the next item.
3150
315179. The ultimate address timeout was not being applied to errors that involved
3152 a combination of host plus message (for example, a timeout on a MAIL
3153 command). When an address resolved to a number of possible hosts, and they
3154 were not all tried for each delivery (e.g. because of hosts_max_try), a
3155 message could remain on the queue longer than the retry timeout.
3156
315780. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
3158 Haardt.
3159
316081. Fixed an obscure SMTP outgoing bug which required at least the following
3161 conditions: (a) there was another message waiting for the same server;
3162 (b) the server returned 5xx to all RCPT commands in the first message so
3163 that the message was not completed; (c) the server dropped the connection
3164 or gave a negative response to the RSET that Exim sends to abort the
3165 transaction. The observed case was a dropped connection after DATA that had
3166 been sent in pipelining mode. That is, the server had advertised PIPELINING
3167 but was not implementing it correctly. The effect of the bug was incorrect
3168 behaviour, such as trying another host, and this could lead to a crash.
3169
3170
3171Exim version 4.30
3172-----------------
3173
3174 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
3175 and daemon.c were passed as pointers to ints; they should have been
3176 pointers to socklen_t variables (which are typically unsigned ints).
3177
3178 2. Some signed/unsigned type warnings in the os.c file for Linux have been
3179 fixed.
3180
3181 3. Fixed a really odd bug that affected only the testing scheme; patching a
3182 certain fixed string in the binary changed the value of another string that
3183 happened to be identical to the end of the original first string.
3184
3185 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
3186 name", it returns that address as the IP address. On some operating
3187 systems (e.g. Solaris), it also passes back the IP address string as the
3188 "host name". However, on others (e.g. Linux), it passes back an empty
3189 string. Exim wasn't checking for this, and was changing the host name to an
3190 empty string, assuming it had been canonicized.
3191
3192 5. Although rare, it is permitted to have more than one PTR record for a given
3193 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
3194 all the names associated with an address, because they do in Solaris.
3195 However, it seems that they do not in Linux for data that comes from the
3196 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
3197 I found this out when I moved to a new Linux workstation and tried to run
3198 the Exim test suite.
3199
3200 To get round this problem I have changed the code so that it now does its
3201 own call to the DNS to look up PTR records when searching for a host name.
3202 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
3203 addresses that are only in /etc/hosts are still found.
3204
3205 This behaviour is, however, controlled by an option called host_lookup_
3206 order, which defaults to "bydns:byaddr". If people want to use the other
3207 order, or indeed, just use one or the other means of lookup, they can
3208 specify it in this variable.
3209
3210 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
3211 some operating systems, this comes back from gethostbyaddr() as an empty
3212 string, and this is what Exim used to test for. However, it seems that in
3213 other systems, "." is yielded. Exim now tests for this case too.
3214
3215 7. The values of check_spool_space and check_log_space are now held internally
3216 as a number of kilobytes instead of an absolute number of bytes. If a
3217 numbers is specified without 'K' or 'M', it is rounded up to the nearest
3218 kilobyte. This means that much larger values can be stored.
3219
3220 8. Exim monitor: an attempt to get the action menu when not actually pointing
3221 at a message produces an empty menu entitled "No message selected". This
3222 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
3223 no entries in it ("Shell widget menu has zero width and/or height"). So I
3224 have added a single, blank menu entry in this case.
3225
3226 9. Added ${quote_local_part.
3227
322810. MIME decoding is now applied to the contents of Subject: header lines when
3229 they are logged.
3230
323111. Now that a reference to $sender_host_address automatically causes a reverse
3232 lookup to occur if necessary (4.13/18), there is no need to arrange for a
3233 host lookup before query-style lookups in lists that might use this
3234 variable. This has therefore been abolished, and the "net-" prefix is no
3235 longer necessary for query-style lookups.
3236
323712. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
3238 have been a typo for LFLAGS, so it has been changed.
3239
324013. The install script calls Exim with "-C /dev/null" in order to find the
3241 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
3242 to be output. Howeve, since Exim outputs its version number before the
3243 error, it didn't break the script. It just looked ugly. I fixed this by
3244 always allowing "-C /dev/null" if the caller is root.
3245
324614. Ignore overlarge ACL variable number when reading spool file - insurance
3247 against a later release with more variables having written the file.
3248
324915. The standard form for an IPv6 address literal was being rejected by EHLO.
3250 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3251 this, as well as the form without the "IPv6" on the front.
3252
325316. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
3254 OS/Makefile-Darwin file.
3255
325617. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
3257 only to LDAP libraries that do not have LDAP_OPT_DEREF.
3258
325918. After change 4.21/52, "%ld" was used to format the contents of the $inode
3260 variable. However, some OS use ints for inodes. I've added cast to long int
3261 to get rid of the compiler warning.
3262
326319. I had forgotten to lock out "/../" in configuration file names when
3264 ALT_CONFIG_PREFIX was set.
3265
326620. Routers used for verification do not need to specify transports. However,
3267 if such a router generated a host list, and callout was configured, Exim
3268 crashed, because it could not find a port number from the (non-existent)
3269 transport. It now assumes port 25 in this circumstance.
3270
327121. Added the -t option to exigrep.
3272
327322. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
3274 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
3275 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
3276 them is set, LOOKUP_LSEARCH is forced.
3277
327823. "exim -bV" now outputs a list of lookups that are included in the binary.
3279
328024. Added sender and host information to the "rejected by local_scan()" log
3281 line; previously there was no indication of these.
3282
328325. Added .include_if_exists.
3284
328526. Change 3.952/11 added an explicit directory sync on top of a file sync for
3286 Linux. It turns out that not all file systems support this. Apparently some
3287 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
3288 do it.) To cope with this, the error EINVAL, which means that sync-ing is
3289 not supported on the file descriptor, is now ignored when Exim is trying to
3290 sync a directory. This applies only to Linux.
3291
329227. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
3293
329428. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
3295 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
3296 this.
3297
329829. Added support for maildirsize files from supplied patch (modified a bit).
3299
330030. The use of :fail: followed by an empty string could lead Exim to respond to
3301 sender verification failures with (e.g.):
3302
3303 550 Verification failed for <xxx>
3304 550 Sender verify failed
3305
3306 where the first response line was missing the '-' that indicates it is not
3307 the final line of the response.
3308
330931. The loop for finding the name of the user that called Exim had a hardwired
3310 limit of 10; it now uses the value of finduser_retries, which is used for
3311 all other user lookups.
3312
331332. Added $received_count variable, available in data and not_smtp ACLs, and at
3314 delivery time.
3315
331633. Exim was neglecting to zero errno before one call of strtol() when
3317 expanding a string and expecting an integer value. On some systems this
3318 resulted in spurious "integer overflow" errors. Also, it was casting the
3319 result into an int without checking.
3320
332134. Testing for a connection timeout using "timeout_connect" in the retry rules
3322 did not work. The code looks as if it has *never* worked, though it appears
3323 to have been documented since at least releast 1.62. I have made it work.
3324
332535. The "timeout_DNS" error in retry rules, also documented since at least
3326 1.62, also never worked. As it isn't clear exactly what this means, and
3327 clearly it isn't a major issue, I have abolished the feature by treating it
3328 as "timeout", and writing a warning to the main and panic logs.
3329
333036. The display of retry rules for -brt wasn't always showing the error code
3331 correctly.
3332
333337. Added new error conditions to retry rules: timeout_A, timeout_MX,
3334 timeout_connect_A, timeout_connect_MX.
3335
333638. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
3337 to the empty sender.
3338
333939. The daemon was not analysing the content of -oX till after it had closed
3340 stderr and disconnected from the controlling terminal. This meant that any
3341 syntax errors were only noted on the panic log, and the return code from
3342 the command was 0. By re-arranging the code a little, I've made the
3343 decoding happen first, so such errors now appear on stderr, and the return
3344 code is 1. However, the actual setting up of the sockets still happens in
3345 the disconnected process, so errors there are still only recorded on the
3346 panic log.
3347
334840. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
3349 connections (as happens on some IP stacks) was logged at start up time as
3350 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
3351 it from "IPv6 and IPv4", which means that two separate sockets are being
3352 used.
3353
335441. The debug output for gethostbyname2() or getipnodebyname() failures now
3355 says whether AF_INET or AF_INET6 was passed as an argument.
3356
335742. Exiwhat output was messed up when time zones were included in log
3358 timestamps.
3359
336043. Exiwhat now gives more information about the daemon's listening ports,
3361 and whether -tls-on-connect was used.
3362
336344. The "port" option of the smtp transport is now expanded.
3364
336545. A "message" modifier in a "warn" statement in a non-message ACL was being
3366 silently ignored. Now an error message is written to the main and panic
3367 logs.
3368
336946. There's a new ACL modifier called "logwrite" which writes to a log file
3370 as soon as it is encountered.
3371
337247. Added $local_user_uid and $local_user_gid at routing time.
3373
337448. Exim crashed when trying to verify a sender address that was being
3375 rewritten to "<>".
3376
337749. Exim was recognizing only a space character after ".include". It now also
3378 recognizes a tab character.
3379
338050. Fixed several bugs in the Perl script that creates the exim.8 man page by
3381 extracting the relevant information from the specification. The man page no
3382 longer contains scrambled data for the -d option, and I've added a section
3383 at the front about calling Exim under different names.
3384
338551. Added "extra_headers" argument to the "mail" command in filter files.
3386
338752. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
3388 crash.
3389
339053. Installed eximstats 1.29.
3391
339254. Added transport_filter_timeout as a generic transport option.
3393
339455. Exim no longer adds an empty Bcc: header to messages that have no To: or
3395 Cc: header lines. This was required by RFC 822, but it not required by RFC
3396 2822.
3397
339856. Exim used to add From:, Date:, and Message-Id: header lines to any
3399 incoming messages that did not have them. Now it does so only if the
3400 message originates locally, that is, if there is no associated remote host
3401 address. When Resent- header lines are present, this applies to the Resent-
3402 lines rather than the non-Resent- lines.
3403
340457. Drop incoming SMTP connection after too many syntax or protocol errors. The
3405 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
3406
340758. Messages for configuration errors now include the name of the main
3408 configuration file - useful now that there may be more than one file in a
3409 list (.included file names were always shown).
3410
341159. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
3412 for those rare installations that do not start the daemon as root or run it
3413 setuid root. I've cut out the call to initgroups() if the daemon is not
3414 root at that time.
3415
341660. The Exim user and group can now be bound into the binary as text strings
3417 that are looked up at the start of Exim's processing.
3418
341961. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
3420
342162. Added $mailstore_basename variable.
3422
342363. Installed patch to sieve.c from Michael Haardt.
3424
342564. When Exim failed to open the panic log after failing to open the main log,
3426 the original message it was trying to log was written to stderr and debug
3427 output, but if they were not available (the usual case in production), it
3428 was lost. Now it is written to syslog before the two lines that record the
3429 failures to open the logs.
3430
343165. Users' Exim filters run in subprocesses under the user's uid. It is
3432 possible for a "deliver" command or an alias in a "personal" command to
3433 provoke an address rewrite. If logging of address rewriting is configured,
3434 this fails because the process is not running as root or exim. There may be
3435 a better way of dealing with this, but for the moment (because 4.30 needs
3436 to be released), I have disabled address rewrite logging when running a
3437 filter in a non-root, non-exim process.
3438
3439
3440Exim version 4.24
3441-----------------
3442
3443 1. The buildconfig auxiliary program wasn't quoting the value set for
3444 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
3445 not defined. This bug was masked in 4.22 by the effect that was fixed in
3446 change 4.23/1.
3447
3448 2. Some messages that were rejected after a message id was allocated were
3449 shown as "incomplete" by exigrep. It no longer does this for messages that
3450 are rejected by local_scan() or the DATA or non-SMTP ACLs.
3451
3452 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
3453 have allow_domain_literals set, the ID did not get logged in the <= line.
3454 Domain literals are now always recognized in Message-ID: header lines.
3455
3456 4. The first argument for a ${extract expansion item is the key name or field
3457 number. Leading and trailing spaces in this item were not being ignored,
3458 causing some misleading effects.
3459
3460 5. When deliver_drop_privilege was set, single queue runner processes started
3461 manually (i.e. by the command "exim -q") or by the daemon (which uses the
3462 same command in the process it spins off) were not dropping privilege.
3463
3464 6. When the daemon running as "exim" started a queue runner, it always
3465 re-executed Exim in the spun-off process. This is a waste of effort when
3466 deliver_drop_privilege is set. The new process now just calls the
3467 queue-runner function directly.
3468
3469
3470Exim version 4.23
3471-----------------
3472
3473 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
3474 HEADERS_CHARSET.
3475
3476 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
3477 ignored. Though the use of -oP was forcing the writing of a pid file, it
3478 was always written to the default place.
3479
3480 3. If the message "no IP address found for host xxxx" is generated during
3481 incoming verification, it is now followed by identification of the incoming
3482 connection (so you can more easily find what provoked it).
3483
3484 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
3485
3486 5. Added some features to "harden" Exim a bit more against certain attacks:
3487
3488 (a) There is now a build-time option called FIXED_NEVER_USERS that can
3489 be put in Local/Makefile. This is like the never_users runtime option,
3490 but it cannot be overridden. The default setting is "root".
3491
3492 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
3493 prefix string with which any file named in a -C command line option
3494 must start.
3495
3496 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
3497 is retained for -C and -D only if the caller of Exim is root. Without
3498 it, the exim user may also use -C and -D and retain privilege.
3499
3500 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
3501 command line option is disabled.
3502
3503 6. Macro names set by the -D option must start with an upper case letter, just
3504 like macro names defined in the configuration file.
3505
3506 7. Added "dereference=" facility to LDAP.
3507
3508 8. Two instances of the typo "uknown" in the source files are fixed.
3509
3510 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
3511 the Configure-Makefile script screwed up while processing it.
3512
351310. Incorporated PCRE 4.4.
3514
351511. The SMTP synchronization check was not operating right at the start of an
3516 SMTP session. For example, it could not catch a HELO sent before the client
3517 waited for the greeting. There is now a check for outstanding input at the
3518 point when the greeting is written. Because of the duplex, asynchronous
3519 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
3520 way, but not yet received, when the check is performed.
3521
352212. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
3523 on TCP/IP sockets, because this apparently causes some broken clients to
3524 timeout.
3525
352613. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
3527 unchanged) from the Cygwin maintainer.
3528
352914. The code for -bV that shows what is in the binary showed "mbx" when maildir
3530 was supported instead of testing for mbx. Effectively a typo.
3531
353215. The spa authenticator server code was not checking that the input it
3533 received was valid base64.
3534
353516. The debug output line for the "set" modifier in ACLs was not showing the
3536 name of the variable that was being set.
3537
353817. Code tidy: the variable type "vtype_string" was never used. Removed it.
3539
354018. Previously, a reference to $sender_host_name did not cause a DNS reverse
3541 lookup on its own. Something else was needed to trigger the lookup. For
3542 example, a match in host_lookup or the need for a host name in a host list.
3543 Now, if $sender_host_name is referenced and the host name has not yet been
3544 looked up, a lookup is performed. If the lookup fails, the variable remains
3545 empty, and $host_lookup_failed is set to "1".
3546
354719. Added "eqi" as a case-independent comparison operator.
3548
354920. The saslauthd authentication condition could segfault if neither service
3550 nor realm was specified.
3551
355221. If an overflowing value such as "2048M" was set for message_size_limit, the
3553 error message that was logged was misleading, and incoming SMTP
3554 connections were dropped. The message is now more accurate, and temporary
3555 errors are given to SMTP connections.
3556
355722. In some error situations (such as 21 above) Exim rejects all SMTP commands
3558 (except RSET) with a 421 error, until QUIT is received. However, it was
3559 failing to send a response to QUIT.
3560
356123. The HELO ACL was being run before the code for helo_try_verify_hosts,
3562 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
3563 ACL is now run after the helo_try_verify_hosts code.
3564
356524. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
3566 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
3567 case-independent, so other case variants are also recognized). Apparently
3568 some systems use these upper case variants.
3569
357025. If more than two messages were waiting for the same host, and a transport
3571 filter was specified for the transport, Exim sent two messages over the
3572 same TCP/IP connection, and then failed with "socket operation on non-
3573 socket" when it tried to send the third.
3574
357526. Added Exim::debug_write and Exim::log_write for embedded Perl use.
3576
357727. The extern definition of crypt16() in expand.c was not being excluded when
3578 the OS had its own crypt16() function.
3579
358028. Added bounce_return_body as a new option, and bounce_return_size_limit
3581 as a preferred synonym for return_size_limit, both as an option and as an
3582 expansion variable.
3583
358429. Added LIBS=-liconv to OS/Makefile-OSF1.
3585
358630. Changed the default configuration ACL to relax the local part checking rule
3587 for addresses that are not in any local domains. For these addresses,
3588 slashes and pipe symbols are allowed within local parts, but the sequence
3589 /../ is explicitly forbidden.
3590
359131. SPA server authentication was not clearing the challenge buffer before
3592 using it.
3593
359432. log_message in a "warn" ACL statement was writing to the reject log as
3595 well as to the main log, which contradicts the documentation and doesn't
3596 seem right (because no rejection is happening). So I have stopped it.
3597
359833. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
3599 However, I am unable to do any testing of this.
3600
360134. Fixed an infelicity in the appendfile transport. When checking directories
3602 for a mailbox, to see if any needed to be created, it was accidentally
3603 using path names with one or more superfluous leading slashes; tracing
3604 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
3605
360635. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
3607 contents are added to the log line that is written for every discarded
3608 recipient. (Previously a log_message setting was ignored.)
3609
361036. The ${quote: operator now quotes the string if it is empty.
3611
361237. The install script runs exim in order to find its version number. If for
3613 some reason other than non-existence or emptiness, which it checks, it
3614 could not run './exim', it was installing it with an empty version number,
3615 i.e. as "exim-". This error state is now caught, and the installation is
3616 aborted.
3617
361838. An argument was missing from the function that creates an error message
3619 when Exim fails to connect to the socket for saslauthd authentication.
3620 This could cause Exim to crash, or give a corrupted message.
3621
362239. Added isip, isip4, and isip6 to ${if conditions.
3623
362440. The ACL variables $acl_xx are now saved with the message, and can be
3625 accessed later in routers, transports, and filters.
3626
362741. The new lookup type nwildlsearch is like wildlsearch, except that the key
3628 strings in the file are not string-expanded.
3629
363042. If a MAIL command specified a SIZE value that was too large to fit into an
3631 int variable, the check against message_size_limit failed. Such values are
3632 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
3633 day this will have to be increased, but I don't think I want to be around
3634 when emails are that large.
3635
3636
3637
3638Exim version 4.22
3639-----------------
3640
3641 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
3642 iconv() is not standard in FreeBSD.
3643
3644 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with